1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
3 changes relative to sbcl-1.4.4:
4 * enhancement: FIND-PACKAGE does not acquire a mutex
6 changes in sbcl-1.4.4 relative to sbcl-1.4.3:
7 * bug fix: pathname accessors such as PATHNAME-DIRECTORY work on
9 * bug fix: (pathname-{device,directory,name,type} ... :case :common) works
10 as expected. In particular MAKE-PATHNAME composed with the accessors
11 roundtrips properly when both use the same :case. (lp#1739906)
12 * bug fix: DIRECTORY no longer gets confused when the value of
13 *DEFAULT-PATHNAME-DEFAULTS* has a name or type component. (lp#1740563)
14 * bug fix: pattern pieces in pathname components are correctly escaped
16 * bug fix: DELETE-DIRECTORY no longer signals an error when the directory is
17 supplied as a pathname with name and/or type components containing escaped
18 characters. (lp#1740624)
19 * bug fix: weak hash-tables no longer cause GC time to scale superlinearly
21 * bug fix: CANCEL-FINALIZATION operates in approximately constant time
22 per operation (lp#1587983)
23 * bug fix: big-endian MIPS systems now (mostly) work again (broken since
25 * bug fix: backtrace from arg-count errors on systems other than x86, x86-64,
26 ARM, and ARM64 now works again.
27 * bug fix: backtrace from asynchronous interrupts on non-x86, non-x86-64
28 systems should now be more reliable.
29 * enhancement: warnings and errors referring to bindings established by LET,
30 LET*, FLET and LABELS point to the offending form more accurately.
31 * enhancement: backtrace for invalid argument count produces the exact
32 supplied arguments including the extra ones on all platforms (no longer
33 just x86, x86-64, ARM, and ARM64).
35 changes in sbcl-1.4.3 relative to sbcl-1.4.2:
36 * enhancement: SLEEP respects deadlines established by SB-SYS:WITH-DEADLINE.
37 * bug fix: DECODE-TIMEOUT and operators accepting a timeout no longer signal
38 an error when called with an argument that is of type (real 0) but not
39 (unsigned-byte 62) (lp#1727789)
40 * bug fix: fixed heap exhaustion bug when consing millions of small objects
41 * bug fix: sb-safepoint builds are now a lot less prone to deadlocks and odd
42 crashes (lp#1424031, lp#1268710)
43 * bug fix: argumentless CALL-NEXT-METHOD where specialized-to-T or
44 unspecialized parameters are mutated now uses the original (non-mutated)
45 parameter values (lp#1734771)
46 * bug fix: memory faults from lisp no longer use (thread-and-interrupt
47 unsafe) global storage for fault addresses (everywhere), and now have
48 cleaner backtraces (on x86 and x86-64). (lp#309068)
49 * bug fix: pathnames with a directory component of the form
50 (:absolute {:up,:wild,:wild-inferiors}) no longer fail to unparse.
52 * bug fix: more reliable signal handling on macOS.
54 changes in sbcl-1.4.2 relative to sbcl-1.4.1:
55 * minor incompatible change: SB-EXT:QUIT is no longer marked as deprecated
56 and behaves like SB-EXT:EXIT.
57 * enhancement: ASDF updated to 3.3.1. The ASDF release is dedicated to
58 the late Elias Pipping who put enormous amounts of work into it despite
59 his terminal illness. Thank you and rest in peace. (lp#1681201)
60 * enhancement: alien routines compiled with '-fsanitize=thread' and/or
61 '-fsanitize=memory' cause fewer false positives in error reporting.
62 * optimization: fewer instances of consing float constants at runtime.
63 * bug fix: a number of compiler bugs detected by Paul F. Dietz' randomized
64 tester. (lp#1731503, lp#1730699, lp#1723993, lp#1730434, lp#1661911,
65 lp#1729639, lp#1729471, lp#1728692)
66 * bug fix: better errors from NAMESTRING and friends on pathnames with no
67 namestrings. (lp#792154)
68 * bug fix: EQUAL and EQUALP compiler transforms were too confident in
69 deriving a result. (lp#1732277, lp#1732225)
70 * bug fix: FILL sometimes returned the underlying data vector rather than
71 the given array. (lp#1732553)
72 * bug fix: SEARCH returned the wrong answer in some cases. (lp#1732952)
73 * bug fix: the type (COMPLEX INTEGER) behaves more as specified by Function
74 TYPEP, which has stronger constraints than System Class COMPLEX.
75 (Reported by Eric Marsden, lp#1733400)
77 changes in sbcl-1.4.1 relative to sbcl-1.4.0:
78 * optimization: faster foreign callbacks.
79 * enhancement: complex arrays can be stack allocated.
80 * enhancement: PROCESS-KILL now exists on win32 and PROCESS-PID actually
82 * optimization: the register allocation method used by the compiler when
83 optimizing for speed is now faster for functions with large bodies.
84 * bug fix: SB-INTROSPECT:ALLOCATION-INFORMATION works on big-endian CPUs
85 (fixes lp#490490 for real rather than by disabling a test)
86 * bug fix: code objects and bignums of large enough size to be placed
87 on GC pages without any other object no longer cause accidental copying
88 during garbage collection. (gencgc only)
89 * bug fix: sb-fasteval failure with 0-argument lambdas (lp#1722715)
90 * bug fix: RUN-PROGRAM doesn't leak handles on win32 and PROCESS-CLOSE
91 doesn't crash. (lp#1724472)
93 changes in sbcl-1.4.0 relative to sbcl-1.3.21:
94 * minor incompatible change: DESTRUCTURING-BIND treats non-toplevel () as
95 nested empty pattern. This seems to be what the standard mandates, so
96 conforming code should not be affected.
97 * ehancement: (GC :GEN 7) with gencgc will zero-fill dead pseudo-static
98 objects so that they do not spuriously cause reachability of objects that
99 would have been otherwise dead.
100 * enhancement: PROCESS-STATUS now tracks stopped and continued processes
101 properly (also fixes lp#1624941, based on patch by Elias Pipping).
102 * bug fix: INSPECT handles errors signaled while printing slot
104 * bug fix: DESCRIBE works on classes like it used to.
105 * bug fix: *LOAD-PATHNAME* and *LOAD-TRUENAME* are bound to pathnames
106 when processing a sysinit or userinit file
107 * bug fix: save-lisp-and-die is able to collect more garbage on non-x86oid
109 * bug fix: fixed out-of-bounds array read in optimized POSITION on bit-vectors
110 * bug fix: signal emulation respects the 128-byte stack red zone on x86-64
113 changes in sbcl-1.3.21 relative to sbcl-1.3.20:
114 * minor incompatible change: the CLOBBER-IT restart for defstruct redefintion
115 has been removed after a 15 year deprecation cycle. Use the new name,
116 RECKLESSLY-CONTINUE. Note also that this restart is hidden if deemed unsafe
117 due to altered placement of untagged slots in the structure.
118 * enhancement: the assignment of -DSBCL_PREFIX= in src/runtime/GNUmakefile
119 can be removed as a local patch, which results in an sbcl executable
120 that finds its core file relative to itself by looking in "../lib/sbcl".
121 * enhancement: backends using the generational GC are able to relocate
122 dynamic space anywhere the operating system places it.
123 This feature can be disabled by removing :relocatable-heap from the
124 build configuration. Not supported on Windows.
125 * enhancement: DEFMETHOD no longer signals IMPLICIT-GENERIC-FUNCTION-WARNING.
126 * enhancement: better type conflict detection for high order functions, e.g.
127 (find x "123" :test #'=)
128 * enhancement: the tabular output of ROOM is aligned dynamically, preventing
129 misaligned tables for larger sizes or counts.
130 * enhancement: ROOM reports on immobile space if applicable.
131 * optimization: optimized external-format routines.
132 * bug fix: SB-INTROSPECT:ALLOCATION-INFORMATION returns :IMMOBILE
133 instead of :FOREIGN for objects in immobile space.
134 * bug fix: dotted lists in special forms and function call forms signal
136 * bug fix: EQUALP hash tables with pathname keys now ignore internal slots.
137 (lp#1712944, reported by Jason Miller)
139 changes in sbcl-1.3.20 relative to sbcl-1.3.19:
140 * minor incompatible change: DEF{GENERIC,METHOD} no longer accept some
141 illegal lambda lists such as (defgeneric bar (foo &key foo)) or
142 (defgeneric baz (t)) that were accepted before.
143 * optimization: a valueless &AUX binding in a BOA constructor does not
144 force all slots reads in safe code to perform a full type check.
145 * optimization: ATOMIC-PUSH and ATOMIC-POP generate better code
146 * bug fix: the low-level debugger would erroneously print - or not print
147 as the case may be - "(bad-address)" for some objects depending whether
148 the --dynamic-space-size argument was used at Lisp startup
149 * bug fix: a DEFCONSTANT with a non non-eql-comparable object as the value
150 could cause miscompilation if that constant appeared as the default
151 expression for an &OPTIONAL binding
152 * bug fix: generic function lambda lists are now checked for repeated
153 and otherwise illegal entries. (lp#1704114)
154 * bug fix: setting gencgc_verbose = 1 could cause deadlock in fprintf()
155 depending on the platform's stdio implementation. The relevant code
156 has been changed to use snprintf() and write() instead.
158 changes in sbcl-1.3.19 relative to sbcl-1.3.18:
159 * enhancement: specialized arrays can be printed readably without using
161 * enhancement: SB-DEBUG:PRINT-BACKTRACE truncates huge string arguments.
162 The full string remains available for inspection via (SB-DEBUG:ARG).
163 * bug fix: backtracing from several threads at once could fail
164 * bug fix: floating-point infinities could not be used as keys
165 in EQUALP hash tables. (lp#1696274)
166 * bug fix: random sb-fasteval failures. (lp#1642708)
167 * bug fix: align the stack in callback wrappers to defend against C
168 compiler over-aggressive use of SIMD. (lp#1697528)
169 * bug fix: don't try to find the class when reporting that a class does
170 not exist for a primitive type. (lp#1697226)
172 changes in sbcl-1.3.18 relative to sbcl-1.3.17:
173 * minor incompatible change: existing values of CFLAGS, ASFLAGS,
174 CPPFLAGS, and LINKFLAGS will be incorporated into C compiler
175 invocations when building from source.
176 * minor incompatible change: the result of WRITE-TO-STRING may be
177 a BASE-STRING if all characters written are of type BASE-CHAR.
178 * minor incompatible change: the broadcast stream with no output
179 streams is a singleton object. That object satisfies OPEN-STREAM-P
180 regardless of how many times CLOSE is invoked on it.
181 * enhancement: x86[-64] backends contain an experimental feature
182 which aids in demonstrating reachability of any object starting
183 from a tenured object or a thread stack by producing a proof
184 as a sequence of pointers to follow.
185 The file "tests/traceroot.test.sh" contains an example usage.
186 * enhancement: if the alien symbol "gc_coalesce_string_literals" is
187 set to 1 prior to SAVE-LISP-AND-DIE, then similar string constants
188 loaded from different fasl files may be collapsed to one object.
189 If the variable is set to 2, then additionally strings which are
190 STRING= in code resulting from COMPILE can be coalesced.
191 For instance, two functions returning the literal string "HI"
192 might return EQ strings after collapsing, which may be undesired
193 in a particular use. The flag pertains to gencgc only.
194 * enhancement: SXHASH values on pathnames are better distributed
195 * bug fix: MAKE-PATHNAME removes empty strings as components of a
196 directory, as is permitted: "Whenever a pathname is constructed
197 the components may be canonicalized if appropriate."
198 * optimization: various printer and FORMAT performance enhancements.
199 * bug fix: GET-FOREGROUND no longer fails in case all other interactive
200 threads exit (lp#1682671, reported by Syll)
201 * bug fix: RELEASE-FOREGROUND always removes the current thread from the
202 list of interactive threads. (lp#1682867, reported by Syll)
204 changes in sbcl-1.3.17 relative to sbcl-1.3.16:
205 * enhancement: memory overhead from the garbage collector's metadata
206 is reduced on 64-bit architectures; no change for 32-bit.
207 * enhancement: further garbage collector speedups affecting
208 pinned objects on conservative backends, and simple-vectors.
209 * enhancement: on Linux a custom handler for SIGSEGV can be called
210 for page faults outside of dynamic space by changing the C symbol
211 "sbcl_fallback_sigsegv_handler".
212 * bug fix: sb-cover does not lose source positions for AND/OR/COND.
213 * bug fix: random disassembler failures. (lp#1527931)
214 * The bundled sb-md5 contrib has been updated to release 2.0.4
215 which is licensed under Creative Commons CC0 per author's statement
216 https://github.com/pmai/md5/commit/fd134e71b71a10ab78905833a7cb9d4d6817c589
217 (Refer to NEWS and COPYING in the contrib/sb-md5 subdirectory)
219 changes in sbcl-1.3.16 relative to sbcl-1.3.15:
220 * optimization: various small tweaks give around 5% faster garbage
222 * bug fix: better detection of when an impossible code path does
223 not need a warning. (lp#1668619)
224 * bug fix: stronger attempts to disable position-independent
225 executable building. (lp#1668986, patch from Mark Wright)
226 * bug fix: OPEN :IF-EXISTS NIL signalled a condition on Windows.
227 (lp#1674437, reported by Jan Idzikowski)
229 changes in sbcl-1.3.15 relative to sbcl-1.3.14:
230 * minor incompatible change: the reader will when feasible create
231 new symbols using a BASE-STRING for the print name. Additionally,
232 string literals can favor the base-string type if desired, though
233 the default is to always return UTF-32 strings for compatibility.
234 A preference for base-string does not disable reading Unicode.
235 The choice is controlled via (SETF READTABLE-BASE-CHAR-PREFERENCE).
236 If Unicode was disabled at build time, this setting does nothing.
237 * enhancement: SBCL generates more debug information by default.
238 * enhancement: type errors provide context information, such as which
239 variable is being bound, which slot of which structure is being set.
240 * enhancement: if #+immobile-symbols is in build-time *FEATURES* (not
241 enabled by default), then symbols will never be moved in memory
242 except by SAVE-LISP-AND-DIE. Immobility has helpful implications for
243 code generation as well as interaction with foreign routines.
244 This feature can only be enabled if #+immobile-space is enabled.
245 * enhancement: undefined function errors can be restarted on x86-64, to
246 either retry calling the function again or call a user supplied function.
247 * enhancement: sb-ext:restrict-compiler-policy accepts an upper bound in
248 addition to a lower bound.
249 * enhancement: #+immobile-code improves the speed of function calling.
250 Some delay may be noticed when redefining an existing function
251 from a saved core file however.
252 * defaults change: sb-ext:*disassemble-annotate* default to NIL, due to its
254 * new feature: SB-LINKABLE-RUNTIME, allowing linking with extra object
255 files to help with delivery of executables. (Thanks to François-René
257 * bug fix: data race in GENTEMP fixed - it can no longer return the
258 same interned symbol to multiple threads if called concurrently
259 * bug fix: interrupting LOADing of FASLs does not leave functions without
260 source locations. (lp#540276)
261 * bug fix: DYNAMIC-EXTENT-declared results of NOTINLINE local functions were
262 treated as if they were actually stack allocated (lp#1659964)
263 * bug fix: correctly handle the case of a non-local exit within a function
264 terminating the extent of dynamic-extent, dynamic-bound variables in the
265 presence of multiple-values (lp#1655011)
266 * bug fix: handling of SB-SYS:WITH-PINNED-OBJECTS in the interpreters (both
267 sb-eval and sb-fasteval) now actually pins objects on gencgc.
268 * bug fix: AVX registers are preserved during exceptions on x86-64 macOS.
269 * bug fix: (directory "SOMETHING/*/**/MORE") is no longer equivalent to
270 (directory "SOMETHING/**/MORE")
271 * bug fix: better console IO on Windows (lp#1660906)
273 changes in sbcl-1.3.14 relative to sbcl-1.3.13:
274 * minor incompatible change: the SB-PCL walker no longer recognizes
275 macros expanding into a DECLARE expression. This is not a language change,
276 since ANSI forbids such usage (X3J13 issue DECLARE-MACROS:FLUSH).
277 * enhancement: for several macros such as MULTIPLE-VALUE-{BIND,SETQ}, COND,
278 DO{,*,LIST}, {RESTART,HANDLER}-{BIND,CASE}, *CASE, conditions signaled
279 during macroexpansion point to the form that caused the problem more
281 * enhancement: the "--noinform" command-line option inhibits output from
282 save-lisp-and-die in addition to removing the startup banner.
283 * bug fix: PROCESS-KILL failed to return errno if the system call failed
284 * optimization: slightly more comprehensive treatment of the keyword
285 arguments to MAKE-ARRAY in compiler transformations.
287 changes in sbcl-1.3.13 relative to sbcl-1.3.12:
288 * enhancement: SET triggers package locks on undefined variables.
290 * enhancement: new Windows specific option to run-program, :escape-arguments
292 * enhancement: recompiling a MAKE-INSTANCE form with an initarg :INITARG
293 CONSTANT where CONSTANT names a constant variable picks up the new value
294 of CONSTANT in case it has been redefined. (lp#1644944)
295 * optimization: faster TYPEP on undefined at compile-time types and upcoming
296 class definitions. (lp#1082967)
297 * optimization: memory consumption of each STANDARD-OBJECT instance is
298 reduced by 2 words if the compact-instance-header feature is enabled.
299 * optimization: CONDITION instances are quicker to allocate.
300 * optimization: unoptimized calls to FILL on specialized vectors are now
301 just as fast as T vectors.
302 * bug fix: get-timezone returns corret DST on 64-bit Windows. (lp#1641058)
303 * bug fix: cross reference information in fasls is no longer incompatible
304 between different cores (lp#1648186)
306 changes in sbcl-1.3.12 relative to sbcl-1.3.11:
307 * enhancement: on x86-64, compiled functions loaded from fasl files
308 can not be moved, but can be freed, by GC. Additionally, COMPILE will
309 produce immobile code if SB-C::*COMPILE-TO-MEMORY-SPACE* is set to
310 :IMMOBILE. (Caution: the flag is experimental and subject to change.)
311 The benefits are better physical separation of code from data,
312 and potentially easier examination of live images by external tools.
313 * enhancement: the docstring for SAVE-LISP-AND-DIE has been amended to
314 say that the :ROOT-STRUCTURES parameter is not meaningless on gencgc,
315 depending on the platform.
316 * bug fix: calling a named function (e.g. a DEFUN) concurrently with
317 redefining that same function could lead to execution of random bytes.
318 * bug fix: yes-or-no-p accepts formatter functions (lp#1639490)
319 * bug fix: better handling of exceptions on macOS.
321 changes in sbcl-1.3.11 relative to sbcl-1.3.10:
322 * minor incompatible change: SB-EXT:*INTEXP-MAXIMUM-EXPONENT* is removed.
323 * enhancement: TRACE ... :REPORT {TRACE,NIL} now work as advertised in the
324 documentation string (based on patch by Patrick Stein)
325 * enhancement: support unboxed signed-word structure slots on x86, x86-64
326 and ARM64. (lp#377616)
327 * optimization: faster logical bit-array operations on multidimensional
329 * optimization: better GC performance in the presence of many threads.
330 (patch by Ilya Perminov, lp#1339924)
331 * optimization: multiple-value-call is optimized with multiple argument
332 forms, not just one. (lp#753803)
333 * bug fix: MAKE-ALIEN-STRING returns the number of allocated bytes as a
334 second value as advertised (reported by Johann 'Myrkraverk' Oskarsson)
335 * bug fix: when TO-READTABLE is supplied to COPY-READTABLE, it will
336 contain only the macros in FROM-READTABLE and no others. (lp#1631506)
337 * enhancement: gencgc has been modified for x86-64 on Linux and macOS
338 to a support mark-and-sweep as well as the traditional copying strategy.
339 It is conceivable that some applications might be adversely affected.
340 Please see ':immobile-space' in 'base-target-features.lisp-expr'
341 for further details, and possible reasons to disable this feature.
342 * enhancement: x86-64 supports shrinking the fixed overhead in a structure
343 from 2 words to 1 word, reducing memory consumption in applications
344 which create many small structures.
346 changes in sbcl-1.3.10 relative to sbcl-1.3.9:
347 * enhancement: more compact low-level error signaling code
348 * enhancement: more compact encoding of cross-reference information
349 * optimization: faster out of line fixnum-float comparisons.
350 * optimization: filling a known simple-vector with a constant value
351 is about as fast in unoptimized code as in code compiled with (SPEED 3),
352 and the x86-64 implementation is able to use SSE instructions.
353 * bug fix: correctly handle the case of a non-local exit within a function
354 terminating the extent of dynamic-extent functions and variables in the
355 presence of multiple-values (lp#1563127)
356 * bug fix: restore builds on the latest OSX with the latest Xcode
359 changes in sbcl-1.3.9 relative to sbcl-1.3.8:
360 * minor incompatible change: NAMESTRING prefers to return a BASE-STRING
361 instead of (ARRAY CHARACTER (*)) when possible.
362 * enhancement: cached make-instance/allocate-instance constructors can now
363 get garbage collected.
364 * optimization: better performance for some unoptimized operations on
366 * bug fix: using the options :LOCAL-NICKNAMES and :LOCK in the same
367 DEFPACKAGE form no longer signals a bogus error
369 changes in sbcl-1.3.8 relative to sbcl-1.3.7:
370 * minor incompatible change: the system now understands that the CONDITION
371 type is disjoint with many other system types.
372 * minor incompatible change: argument types in condition report functions
373 are now declared (in combination with the above change, this can result in
374 early detection of erroneous code).
375 * enhancement: simple arrays of any rank can be stack-allocated
376 on platforms supporting stack allocation of vectors.
377 * optimization: improved type derivation for FIND, POSITION, COUNT, SEARCH,
378 MISMATCH and other array and sequence functions.
379 * optimization: ALLOCATE-INSTANCE is now as fast as MAKE-INSTANCE.
380 * optimization: more efficient CHANGE-CLASS.
381 * bug fix: versions of getresuid() and getresgid() in SB-POSIX no longer
382 cause memory faults, and should work properly (lp#1603806, reported by
384 * bug fix: handle ENOENT from getprotobyname() (lp#1596043, reported by
387 changes in sbcl-1.3.7 relative to sbcl-1.3.6:
388 * bug fix: preserve the name of the destructive function for the destroyed
389 constant and important result warnings, even when declared NOTINLINE.
390 * optimization: faster operations on list-sets.
391 * optimization: better type derivation of set functions.
393 * optimization: load-time TLS-INDEX assignment, and other
394 microoptimizations, on x86.
400 ** REMOVE, REMOVE-DUPLICATES, DELETE and DELETE-DUPLICATES on lists.
402 changes in sbcl-1.3.6 relative to sbcl-1.3.5:
403 * bug fix: do not insert conditional newlines in print-unreadable-object
404 (lp#1398290). This reverses a change made in lp#488979 which reversed
405 a fix advertised in release 0.8.14 to pass the GCL ANSI Test Suite.
406 * bug fix: constant negative rotations of 32-bit quantities are compiled
407 correctly on x86-64 and arm. (lp#1586614, reported by Guillaume Le
410 changes in sbcl-1.3.5 relative to sbcl-1.3.4:
411 * enhancement: the platform's strtod() is exposed as SB-POSIX:STRTOD
412 * enhancement: speed up debug info creation for highly nested functions.
414 * enhancement: the interleaved structure slot optimization from
415 release 1.2.6 has been ported to all architectures.
416 * enhancement: support run-program I/O redirection into lisp streams on
418 * bug fix: better wording in missed optimization note. (lp#1003265)
419 * bug fix: interpreted (CAS SVREF) was broken
420 * bug fix: support CLISP as build host for ARM (lp#1568256, thanks to Tomas
423 changes in sbcl-1.3.4 relative to sbcl-1.3.3:
424 * enhancement: who-sets and who-references work on DEFGLOBAL. (lp#1552997)
425 * enhancement: CONSTANTP understands backquote.
426 e.g. (CONSTANTP '`(0 (,CHAR-CODE-LIMIT))) => T
427 * optimization: improvements to sequence functions: CONCATENATE, SUBSTITUTE,
429 * bug fix: SB-EVAL does not signal an error for (THE KEYWORD :FOO)
430 * bug fix: a DEFTYPE name that is redefined into a DEFSTRUCT name
431 is less likely to cause confusion in the compiler.
432 * bug fix: DOCUMENTATION works as intended for classes with non-standard
434 * bug fix: (TYPEP <extended-sequence> <extended-sequence-class>) no longer
435 returns NIL in certain situations
436 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE accept class objects as
438 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE expand DEFTYPEs in
441 changes in sbcl-1.3.3 relative to sbcl-1.3.2:
442 * enhancement: warn about argument mismatch for functions passed as
443 arguments to other functions (e.g. REDUCE, MAP) at compile-time.
444 * optimization: functions accepting other functions (e.g. REDUCE, FIND) can
445 now be constant-folded if all function arguments are declared as foldable.
446 * optimization: improved logical operations on integers of unknown type.
447 * bug fix: exception handling no longer leaks memory on OS X. (lp#326238)
449 changes in sbcl-1.3.2 relative to sbcl-1.3.1:
450 * enhancement: {READ,WRITE}-SEQUENCE are much faster for some combinations
451 of short sequences and stream types
452 * enhancement: MAKE-LIST's result can be stack-allocated on x86-64
453 * bug fix: WRITE-SEQUENCE no longer fails to write lists containing integers
455 * bug fix: LOGTEST (and hence ODDP) no longer conses when given fixnum
456 arguments and small bit positions. (lp#1277690)
457 * bug fix: READ-FROM-STRING compiler-macro does not permute its arguments
458 * bug fix: DEFUN of a function name that collides with a system-generated
459 structure accessor does not confuse the runtime. (lp#540063)
460 * bug fix: heap corruption from miscompiled RESTART-BIND. (lp#1530390)
462 changes in sbcl-1.3.1 relative to sbcl-1.3.0:
463 * enhancement: SB-THREAD support for ARM64.
464 * enhancement: compiling an out-of-line DEFSTRUCT constructor call
465 will warn if a defaulted value is incompatible with its slot type.
466 * enhancement: a local INLINE declaration on a structure constructor
467 will work as intended, subject to any other factors that inhibit
468 inlining, even if the DEFSTRUCT was not itself within a global
469 INLINE proclamation for the named constructor
470 * enhancement: SB-EXT:DYNAMIC-SPACE-SIZE is now defined for cheneygc.
471 * enhancement: x86[-64] platforms support SB-EXT:CAS on structure slots
473 * enhancement: the interleaved structure slot optimization from
474 release 1.2.6 has been ported to 32-bit x86, Sparc, PowerPC, ARM64.
475 * enhancement: SB-THREAD:JOIN-THREAD signals a proper error when an attempt
476 is made to join the current thread
477 * bug fix: NTH-VALUE does not cause stack overflow. (lp#1511419)
478 * bug fix: structure constructor type checking is better. (lp#1508735)
479 * bug fix: supplied-p variables for unused optional or keyword variables no
480 longer confuse SB-DI:PARSE-COMPILED-DEBUG-FUN-LAMBDA-LIST (and thus the
481 backtrace machinery) (lp#1498644)
482 * bug fix: Backtrace correctly handles undefined-function frames on MIPS.
483 * bug fix: WITH-FLOAT-TRAPS-MASKED correctly clears accrued traps on MIPS
484 (fixes issues with floating-point type derivation in the compiler).
485 * bug fix: FLOAT-NAN-P and FLOAT-TRAPPING-NAN-P now work correctly on MIPS
487 * bug fix: MIPS context register access now masks to 32 bits (fixing issues
488 parsing negative-fixnum values for internal-error arguments and escaped
489 debug variables on 64-bit CPUs).
490 * bug fix: (SETF SAP-REF-DOUBLE) with constant offset on big-endian MIPS
492 * bug fix: Callback parameter (argument) handling on MIPS is now vastly
494 * bug fix: %DECREMENT-SEMAPHORE adjusts the remaining timeout after a
497 changes in sbcl-1.3.0 relative to sbcl-1.2.16:
498 * minor incompatible change: the environment passed to a macro/setf/deftype
499 expander is not always an object of type SB-KERNEL:LEXENV.
500 It can be nil, as is permissible by the standard.
501 * enhancement: ported to ARM64 Linux.
502 * enhancement: a new interpreter is included which has many benefits
503 over sb-eval. It is disabled by default. See src/interpreter/README
504 for instructions to enable it, and further details.
505 * bug fix: calling COMPILE when SB-EXT:*EVALUATOR-MODE* was :INTERPRET
506 would fail to perform "normal semantic processing such as macro expansion"
507 as stipulated by X3J13 issue LOAD-TIME-EVAL.
508 * bug fix: SB-UNICODE:CONFUSABLE-P no longer treats "<" and the empty
509 string as confusable. (lp#1504739)
510 * bug fix: (ASSERT (COMPUTE-IT ...)) would expand incorrectly
511 if COMPUTE-IT was a local macro that shadowed a global function.
512 * bug fix: SB-POSIX:CFSETISPEED and SB-POSIX:CFSETOSPEED now work properly
513 on platforms that use only the minimum specified set of fields in struct
514 termios (verified on Linux, still known not to work on FreeBSD and NetBSD,
515 very probably others). (partial fix for lp#1500951)
517 changes in sbcl-1.2.16 relative to sbcl-1.2.15:
518 * enhancement: by default, timers with a repeat interval do not "catch up"
519 by repeatedly calling their function after a clock discontinuity such as a
520 suspend and resume cycle
521 * bug fix: correctly restore multiple values on the stack in the presence of
522 alien calls. (lp#1489590)
523 * bug fix: MAKE-STRING-OUTPUT-STREAM enforces that :ELEMENT-TYPE
524 is a subtype of CHARACTER.
525 * bug fix: an EQL method specializer no longer causes garbage retention
526 if there are no extant methods using the specializer. (lp#492851)
528 changes in sbcl-1.2.15 relative to sbcl-1.2.14:
529 * new feature: DEPRECATION declaration for functions, variables and types
530 causes {EARLY,LATE,FINAL}-DEPRECATION-WARNING to be signaled when subject
531 of the declaration is used. Integrated with DESCRIBE, DOCUMENTATION and
532 SB-CLTL2:{VARIABLE,FUNCTION}-INFORMATION. Documented in the "Deprecation"
533 section of the manual.
534 * enhancement: ASDF updated to 3.1.5. (lp#1476867)
535 * enhancement: definitions within PROGN get proper source locations when
536 compiled (needs latest Slime to take advantage of this). (lp#1473147)
537 * enhancement: source locations for DEFCLASS slots now point directly to the
538 slot definitions, not the whole DEFCLASS form.
539 * bug fix: better source location in the presence of quoted forms.
541 * bug fix: better source locations inside backqoute. (lp#1361502)
542 * bug fix: HANDLER-BIND requires that the handler-function be
543 a function designator at the time of binding establishment. (lp#1480679)
544 * bug fix: inlined functions surrounded by nested macrolets are properly
547 changes in sbcl-1.2.14 relative to sbcl-1.2.13:
548 * minor incompatible change: The name of a compiled anonymous lambda
549 as returned by the third value of FUNCTION-LAMBDA-EXPRESSION can have
550 a lambda-list-like list following the introductory LAMBDA that is not
551 in general a syntactically valid lambda list. Specifically, it won't
552 retain default values, supplied-p variables, or &KEY or &AUX bindings.
553 * enhancement: DESTRUCTURING-BIND has been totally reimplemented from
554 scratch to address a handful of performance and correctness issues.
555 Some minor behavioral differences exist regarding order of evaluation
556 of default forms for unsupplied &OPTIONAL and &KEY arguments
557 when nested destructuring patterns are involved.
558 (lp#707556, lp#707573, lp#707578, lp#708051)
559 * enhancement: DEFCONSTANT and DEFSTRUCT respect package locks. (lp#1186238,
561 * enhancement: sb-unicode:normalize-string has a new optional argument,
562 FILTER, a callback which controls which decomposed characters are
563 collected. Useful for stripping away diacritics more efficiently.
564 * bug fix: (TYPE-OF ARRAY) for a non-simple array is subject to change
565 after a call of ADJUST-ARRAY. (lp#1333731)
566 * bug fix: Dynamic-extent allocation with a loop between allocating a value
567 and the start of its environment no longer discards the allocated data
568 when the loop is taken. (lp#1472785)
569 * bug fix: Variable-reference elimination no longer generates incorrect code
570 under certain circumstances. (lp#1446891)
571 * bug fix: variables with EQL types are no longer treated as constants by
572 VOPs, which caused problems with closures being allocated for such
573 variables, but they remained unused. (lp#1390149)
574 * bug fix: Windows installer generates registry key name
575 correctly. (lp#1476447)
577 changes in sbcl-1.2.13 relative to sbcl-1.2.12:
578 * incompatible change: on success, TRY-SEMAPHORE and WAIT-ON-SEMAPHORE
580 * enhancement: WAIT-ON-SEMAPHORE accepts a decrement parameter
581 * enhancement: JOIN-THREAD allows distinguishing timeout vs. abort in all
583 * enhancement: On Windows DBG_PRINTEXCEPTION_C is handled and its message is
584 printed. (lp#1437947)
585 * bug-fix: TRUENAME works properly on broken symlinks presented as
586 directories. (lp#1400003)
587 * bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with left-to-right
588 order of argument evaluation. (lp#1458190)
589 * bug fix: (SETF (LDB (BYTE 1 2 JUNK) X) 0) is rightly rejected.
590 * bug fix: DEFSETF lambda lists should not permit argument destructuring.
591 * bug fix: calls to (SETF SLOT-VALUE) on a missing slot would in certain
592 situations incorrectly return the result of a SLOT-MISSING method
593 instead of always returning the new value. (lp#1460381)
594 * bug fix: a DEFMACRO occurring not at toplevel and capturing parts of
595 its lexical environment (thus being a closure) caused expressions
596 involving the macro name to cause corruption in the pretty-printer
597 due to faulty introspection of the lambda list of a closure.
598 * bug fix: out of line MAP/MAP-INTO check that the results produced by the
599 function are of the matching sequence type. (lp#1459581)
600 * bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled correctly.
602 changes in sbcl-1.2.12 relative to sbcl-1.2.11:
603 * minor incompatible change: the SB-C::*POLICY* variable is no longer
604 a list. Code which manipulated it as such (including but not limited
605 to non-bundled releases of ASDF) will need to be revised.
606 * enhancement: The input stream for COMPILE-FILE implements
608 * enhancement: EVAL errors that occur by way of LOAD report the starting
609 line and column number of the erring toplevel form. (lp#565247)
610 * optimization: better MAP and MAP-INTO on known vector result types.
611 * bug fix: Read/modify/write macros accessing a place which is a
612 composition of CAR+CDR operations, such as (SHIFTF (CADR X) (ELT V 0)),
613 do not access subforms more than once. (lp#1450968)
614 * bug fix: short form of DEFSETF no longer allows trailing junk.
615 * bug fix: DEFINE-MODIFY-MACRO respects the provisions of CLHS 5.1.3
616 regarding argument evaluation order. (lp#1452539)
617 * bug fix: POP works as specified in CLHS if the setter for its
618 argument has a side-effect on the existing CAR value. (lp#1454021)
619 * bug fix: Reading "#()" with a positive numeric argument signals a
620 reader error. As specified, reading "#1()" has undefined consequences,
621 so correct portable code should be indifferent to this. (lp#1252100)
622 * bug fix: Malformed reader conditionals such as "(#-no-such-feature)"
623 and "(#+sbcl)" no longer parse as NIL. (lp#1454400)
625 changes in sbcl-1.2.11 relative to sbcl-1.2.10:
626 * enhancement: SET-PPRINT-DISPATCH will warn when given an expression in
627 which any part is unrecognizable as a legal type-specifier.
628 The dispatch table will be altered, but the new entry is disabled.
629 Subsequent type-defining forms will cause pprint-dispatch tables to
630 re-examine whether any disabled entries should be enabled. (lp#1429520)
631 * enhancement: Loading code containing calls to a deprecated function will,
632 under most circumstances, signal warnings similar to compiling such code.
633 The usual caveat holds about not detecting calls through a computed name,
634 as in (funcall (intern "DEPRECATED-FUN" "SB-EXT")).
635 * enhancement: (SB-EXT:COMPILE-FILE-LINE) is a new macro that expands
636 to a constant (VALUES integer integer) indicating the source line/column
637 from which it was read, intended for logging Lisp runtime errors in
638 a style similar to that afforded by the C preprocessor __LINE__ macro.
639 Similarly (SB-EXT:COMPILE-FILE-POSITION) returns a position in characters.
640 * enhancement: improved source locations for VOPs, alien types and
642 * bug fix: functions in :FINAL deprecation have the correct docstring.
643 No visible change, as no such functions presently exist. (lp#1439151)
644 * bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an error
645 if OTHER names either a macro or special-operator. (lp#1439921)
647 changes in sbcl-1.2.10 relative to sbcl-1.2.9:
648 * minor incompatible change: all SOCKINT::WIN32-* functions have been
649 deprecated with EARLY deprecation state
650 * minor incompatible change: performing introspection via the system-internal
651 SB-INT:INFO function could expose that :TYPE :TRANSLATOR is not necessarily
652 a function, as it always was before. (Affects swank-fancy-inspector)
653 * enhancement: The value of SXHASH on bit-vectors of length equal to the
654 word size now depends on the vector's contents instead of being constant;
655 its value on bit-vectors of length divisible by the word size now depends
656 also on the contents of the vector's last word.
657 * bug-fix: sb-bsd-sockets on win32 uses proper C function declarations.
659 * bug fix: A new dead code elimination phase removes dead code loops
660 that confuse stack analysis. (lp#1255782, lp#308914)
661 * bug fix: A toplevel form which was simple enough to bypass the main
662 compiler in COMPILE-FILE, and which contained an empty SETQ or PROGN
663 would produce an invalid fasl file. (lp#1427050)
664 * bug fix: The compiler no longer signals an internal error when
665 encountering invalid FUNCTION forms like (function 1)
666 * bug fix: express proper dependencies in the ASDF contrib, to support
667 systems where make runs in parallel. (lp#1434768; thanks to Nikhil
670 changes in sbcl-1.2.9 relative to sbcl-1.2.8:
671 * minor incompatible change and bug fix: unboxed numeric constants
672 on x86oids are arranged in memory differently, and the disassembler
673 does not show them separately in DISASSEMBLE, but does
674 if DISASSEMBLE-CODE-COMPONENT is used. (lp#1421987)
675 * optimization: The compiler's treatment of type specifiers makes
676 it slightly faster and more memory-efficient. Portable code
677 should be indifferent to this change, however, users of
678 SB-INTROSPECT:FUNCTION-TYPE might notice that (MEMBER T NIL)
679 and (MEMBER NIL T) are both internally collapsed to the former,
680 so that the latter can never be obtained as part of an FTYPE.
681 * optimization: a TYPEP call in which the second argument is not a
682 QUOTE form but nevertheless recognized as a compile-time constant
683 might open-code the test. One scenario for this involves backquote,
684 such as (TYPEP x `(my-type ,some-arg)). Code which relied upon
685 deferring until runtime should declare (NOTINLINE TYPEP).
686 [Due to the sematic constraints of DEFTYPE etc in in CLHS 3.2.2.3,
687 code requiring delayed evaluation could be unportable though.]
688 * enhancement: unused variables at the top-level are now reported.
690 * bug fix: DEFCLASS handles cyclic {super,meta}class relations better
692 * bug fix: compiler no longer signals an error when compiling certain
693 function calls. (lp#1416704, lp#404441, lp#1417822, lp#1234919)
694 * bug fix: compiler doesn't stumble on a LOGIOR transform. (lp#1389433)
695 * bug fix: more robust debugger and backtraces. (lp#1413850, lp#1099500,
696 lp#1412881, lp#945261, lp#1419205, lp#1409402)
697 * bug fix: files larger than 4GB can now be compiled.
698 * bug fix: x86 truncated results from 64-bit foreign functions to 32 bits.
699 * bug fix: file-position didn't work on large files on win32. (lp#1271545)
700 * bug fix: callbacks from foreign threads can work without enabling
702 * bug fix: sb-introspect:function-lambda-list works properly on interpeted
704 * bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (lp#886418)
705 * bug fix: compiler no longer fails to dump a multidimensional array
706 constant involving a circular reference to itself
707 * bug fix: conditional and nested DX allocation no longer confuse the
708 compiler in STACK analysis. (lp#1044465)
709 * bug fix: sb-rotate-byte constant folding bug fixed. (lp#1423682)
711 changes in sbcl-1.2.8 relative to sbcl-1.2.7:
712 * enhancement: better error and warning messages. (lp#1314767, lp#736383)
713 * enhancement: backtrace for invalid argument count produces the exact
714 supplied arguments including the extra ones, on x86, x86-64 and ARM.
715 * enhancement: a STYLE-WARNING is signaled for DEFSTRUCT accessors which
716 are used before the structure is defined; similarly for the predicate.
717 * optimization: FORMAT NIL with only ~a and string arguments is transformed
719 * optimization: POSITION and FIND when inlined into code that is compiled
720 with qualities of safety < 2 and speed > space will no longer signal
721 an error on circular lists, but will potentially loop forever if given
722 no :END constraint. As was always the case, calls that are not inlined
723 are safe regardless of lexical policy.
724 * bug fix: CLOS methods compiled with (OPTIMIZE (DEBUG 0))
725 no longer cause debugger failure when printing a backtrace
726 * bug fix: more resilience to deleted code. (lp#1308328, lp#1390544)
727 * bug fix: the CLHS example of MAKE-LOAD-FORM involving TREE-WITH-PARENT
728 did not work, and now it does.
730 changes in sbcl-1.2.7 relative to sbcl-1.2.6:
731 * optimization: returning constant values refers to preboxed constants
732 more reliably. (lp#1398785)
733 * enhancement: a STYLE-WARNING is produced if a compiler-macro is defined
734 for a function after at least one ordinary (not inlined) call to that
735 function was compiled, indicating a likely compilation order problem.
736 Likewise a warning ensues if a call is compiled to a function
737 that is subsequently proclaimed INLINE.
738 * enhancement: always lose() when something goes wrong while saving a core
739 (instead of just printing an error on stderr in some situations).
740 * enhancement: frames in the debugger are now restartable by default.
741 * bug fix: restore error handling on Windows x86.
742 * bug fix: MAKE-SEQUENCE detects type errors in its :INITIAL-ELEMENT
743 at compile-time when possible. (lp#330299)
744 * bug fix: parsing of malformed type specifiers no longer results
745 in a memory-fault-error.
746 * bug fix: LOOP properly destructures nested lists in WITH.
747 * bug fix: MACROEXPANDing the redefinition of an alien structure type no
748 longer signals the wrong error.
749 * bug fix: PROGV doesn't get confused by forced DEBUG 3 (lp#1405456).
751 changes in sbcl-1.2.6 relative to sbcl-1.2.5:
752 * enhancement: SERVE-EVENTS uses the poll() system call in lieu of
753 select() if the OS has the former. Previously poll() was used
754 only if waiting on exactly one file descriptor.
755 * enhancement: efficiency of access to untagged structure slots is improved
756 on x86-64, and the order of slots in memory is exactly as specified by
757 defstruct, simplifying use of structures as arguments to foreign calls.
758 * bug fix: SB-DEBUG:ARG now works in all TRACE options which evaluate forms.
760 * bug fix: GC memory corruption during internal memory handling.
761 * bug fix: duplicate effective-slot-definition objects as compared
762 by EQ on name could be present in CLASS-SLOTS of a class whose
763 metaclass was structure-class or condition-class. (lp#1049423)
764 * bug fix: HANDLER-BIND with empty bindings works again; regression in
766 * bug fix: ATOMIC-INCF works on structure slots in interpreted code.
768 * bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and
769 (member #\a #\c). (lp#1392068)
770 * bug fix: READ sometimes accidentally preserved a whitespace character
771 after a token when it should not have. (lp#327790)
773 changes in sbcl-1.2.5 relative to sbcl-1.2.4:
774 * enhancement: sb-bsd-sockets now has basic support for IPv6
775 * enhancement: An sb-unicode package has been added, containing
776 many functions related to handling Unicode text
777 * enhancement: The reader now normalizes symbols to Normalization
778 Form KC (NFKC). This behavior can be disabled with
779 SB-EXT:READTABLE-NORMALIZATION
780 * enhancement: a style-warning is signaled if OPTIMIZE declarations
781 multiply specify a quality with differing values. (lp#310267)
782 * bug fix: conservatively pointed to pages wipe out unused dwords so
783 that they cannot act as false roots in turn.
784 * bug fix: the walker's handling of lexical variable and symbol-macro
785 bindings is improved (lp#375326, lp#1368305)
786 * bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a clause
787 contains an undefined condition type; regression in 1.1.19 (lp#1378939)
788 * bug fix: in interpreted code, inequality predicates did not type-check
789 arguments that weren't examined, and a 1-argument use of MIN or MAX
790 accepted a complex number. (lp#1373702)
791 * bug fix: APROPOS and APROPOS-LIST handle inherited symbols correctly.
792 (lp#1364413, thanks to Zach Beane)
794 changes in sbcl-1.2.4 relative to sbcl-1.2.3:
795 * enhancement: the sequence functions MAP, CONCATENATE and MERGE now call
796 the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and
797 SEQUENCE:MERGE respectively when the specified result type designates an
799 * bug fix: Wrong binding order of supplied-p parameters in macro lambda
801 * bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
802 universal superclass (lp#1332983)
803 * bug fix: reading an uninterned symbol whose print name has the
804 syntax of an integer signals an error. (lp#310062)
805 * bug fix: the walker is less likely to be confused when walking LET* forms
806 with special bindings and use of those bindings and others of the same
808 * bug fix: a rare bug affecting 32-bit platforms resulting in a
809 fatal condition with the message "Globaldb rehash failure" has been fixed.
811 changes in sbcl-1.2.3 relative to sbcl-1.2.2:
812 * enhancement: DOCUMENTATION works on instances of
813 FUNCALLABLE-STANDARD-CLASS
814 * enhancement: ASSERT reports arguments of calls to lexical functions in
815 additional to global functions.
816 * enhancement: ASDF updated to 3.1.3
817 * enhancement: UIOP can be loaded without ASDF.
818 * bug fix: some methods on CHANGE-CLASS did not finalize the new class
819 before accessing its class-precedence list.
820 * bug fix: CHANGE-CLASS no longer fails on unbound slots in the source
822 * bug fix: CHANGE-CLASS signals an appropriate error when the destination
823 class is a FORWARD-REFERENCED-CLASS.
824 * bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for slots for
825 which initargs have been supplied.
826 * bug fix: saving cores on ARM was broken since the introduction of GENCGC.
828 * bug fix: macroexpanding a backquoted expression involving ",."
829 outside of the compiler failed. (lp#1354623)
831 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
832 * incompatible change: the #\` ("backquote") reader macro was reimplemented
833 to support robust pretty-printing. Reading a form involving #\` produces
834 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
835 that are not lists. Code that unportably attempts operations on
836 un-evaluated forms resulting therefrom, e.g.
837 (SUBST a b (read-from-string "`(x (,y))"))
838 might generate incorrect results and/or errors.
839 * enhancement: support for GNU/kFreeBSD x86.
840 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
841 and DEFGLOBAL variables of type fixnum.
842 * enhancement: arithmetic constant reduction is now performed on defconstant
843 constants too. (lp#1337069).
844 * bug fix: certain ftype proclamations containing &optional t &rest t no
845 longer cause subsequent definitions to signal bogus style-warnings.
846 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
847 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
850 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
851 * enhancement: GENCGC is enabled on ARM.
852 * enhancement: better error reporting for invalid calls to local functions.
853 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
855 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
857 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
859 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
861 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
862 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
863 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
865 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
866 lp#700538, lp#613876, lp#695286, lp#798388)
867 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
868 * bug fix: array type intersection handles T and unknown element types
869 correctly. (lp#1258716)
870 * bug fix: fix a corner case in array type unparsing that would result in
871 misleading translations from our internal type representation.
872 * bug fix: array-rank now sees through union and intersection types.
874 * bug fix: when DECLARE expressions are in the wrong place, be careful not
875 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
877 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
878 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
879 instead of signaling an error. (lp#1095483)
880 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
881 used to (rarely) introduce duplicate conflict markers in a single
882 TN/block pair. (lp#1327008)
884 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
885 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
886 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
887 report of the signaled conditions lists currently running threads.
888 * enhancement: ported to ARM linux.
889 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
890 * enhancement: new contrib sb-mpfr by Stephan Frank.
891 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
892 (lp#1315846, thanks to Mark Cox)
893 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
894 function-designator to a function only as needed. (lp#1012335)
895 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
896 thanks to Thomas Hlavaty)
897 * bug fix: handle --without-xxx options to make.sh more carefully.
898 (lp#1246665, thanks to Richard M Kreuter)
899 * bug fix: prevent maybe-delete-exit from doing semantically broken things
900 with local exits. (lp#309099, lp#518099, lp#533930)
901 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
904 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
905 * optimization: COERCE is now more effecient for more cases when the type is
906 known at compile-time.
908 * bug fix: correctly inherit condition initforms. (lp#1300904)
909 * bug fix: properly pprint literal functions inside nested lists.
911 * bug fix: more-correctly handle array-type unity (broken for ages, causing
912 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
913 reported by jasom in #lisp).
915 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
916 * enhancement: printing backtraces respects
917 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
919 * optimization: defstruct out-of-line accessor are now as fast as inlined.
921 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
922 instances with a test-function (reported by Vivitron in #sbcl)
923 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
924 * bug fix: Change COND error message (lp#1254511)
925 * bug fix: LOAD is no longer confused when called on a directory.
927 * bug fix: MAKE-CONDITION reports names of missing condition classes
928 properly (lp#1199223)
929 * bug fix: restore building with clang. (lp#1293643)
930 * bug fix: restore building on SPARC (broken since 1.1.15).
931 * bug fix: improved FreeBSD support.
932 * bug fix: PPC floating point conversion corrupted stack.
934 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
935 * minor incompatible change: improve read/print consistency for pathnames on
936 Win32, by using the circumflex character #\^ as the escape character.
938 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
939 * enhancement: Loading fasls with symbols from an undefined package includes
940 the name of the symbol in the error message.
941 * bug fix: problems when redefining classes and doing TYPEP on classes
942 concurrently. (lp#1272742)
943 * bug fixes to the x86-64 XCHG instruction:
944 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
946 ** it was misencoded when used to exchange EAX with itself.
947 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
948 32- and 16-bit variations as NOP.
949 * bug fix: the disassembler outputs source annotations in the right place
950 and no longer randomly drops some of them. (lp#1249205)
951 * bug fix: fix commutative-arg-swap from introducing undumpable structures
952 into code, prevent code with errors from being compiled. (lp#1276282)
953 * bug fix: pathnames with :back in their directory component are succeffully
955 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
956 wrap functions around. (lp#309086)
958 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
959 * new feature: the iterative spilling/coloring register allocator developed
960 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
961 in. By default, it only activates for functions that optimize with
962 (speed 3) and (> speed compilation-speed), but setting
963 sb-regalloc:*register-allocation-method* to :iterative forces its
964 execution. The previous behaviour can be obtained by instead setting that
965 variable to :greedy. Thanks again to Google for their support, and, more
966 crucially, to Alexandra Barchunova for her hard work.
967 * optimization: make-array with known element-type and unknown dimensions is
969 * optimization: make-array with unknown element-type is faster as well.
971 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
972 :application-type argument, which can be :console or :gui. :gui allows
973 having GUI applications without an automatically appearing console window.
974 * enhancement: reduced conservativism on GENCGC platforms:
975 conservative roots must be valid-looking tagged pointers or point
976 within a code object, not merely point to within the allocated part
977 of a page, in order to pin a page.
978 * enhancement: support for "Mac Roman" external format.
979 * enhancement: encapsulation of named generic functions now happens without
980 altering the identity of the function bound to the name.
981 * bug fix: Windows applications without the console window no longer misbehave.
982 (patch by Wilfredo Velazquez, lp#1256034).
983 * bug fix: modular arithmetic optimizations do not stumble on dead branches
984 with bad constants. (reported by Douglas Katzman)
985 * bug fix: CLISP can be used again as a cross-compilation host.
986 (Thanks to Vasily Postnicov, lp#1261451)
987 * bug fix: run-program crashed with :directory nil. (lp#1265077)
989 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
990 * optimization: complicated TYPEP tests are less opaque to the type
991 propagation pass. (lp#1229340)
992 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
993 * optimization: EQUALP on structures with raw slots (double-float/complex)
994 no longer conses and is faster.
995 * optimization: RESTART-CASE expands to more compact code.
996 Thanks to Jan Moringen. (lp#1249055)
997 * enhancement: Top-level defmethod without defgeneric no longer causes
998 undefined-function warnings in subsequent forms. (lp#503095)
999 * enhancement: Better error messages for system errors on Windows.
1000 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
1001 Cushing. (lp#1249183)
1002 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
1003 specification (multiple integer arguments) and signals a continuable error
1004 if the current SBCL version is lower (older) than the specification.
1006 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
1007 * bug fix: EQUALP now compares correctly structures with raw slots larger
1009 * bug fix: contribs couldn't be built on Windows with MinGW.
1010 * bug fix: Better pathname handling on Windows. (lp#922117)
1011 * bug fix: OPEN reports a more meaningful error when an existing file is
1012 opened for output with :if-exists :new-version. Thanks to Philip
1013 Munksgaard. (lp#455381)
1014 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
1015 CLOS-related errors. (lp#633911)
1016 * bug fix: GC deadlocks caused by concurrent consing on Windows.
1018 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
1019 * optimization: better distribution of SXHASH over small conses of related
1021 * other improvements to SXHASH:
1022 ** use the whole of the positive-fixnum range for SXHASH of fixnums
1023 * enhancement: The error message when calling an undefined alien function
1024 includes the name of the function on x86-64.
1025 * enhancement: sb-ext:run-program now supports :environment on Windows.
1026 * enhancement: ASDF is no longer required to load contribs at runtime.
1028 * enhancement: when called with a symbol, FIND-RESTART no longer calls
1029 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
1030 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
1031 clusters better in some cases
1032 * enhancement: SOME/ANY/other quantification higher-order functions no
1033 longer cons. (lp#1070635)
1034 * bug fix: forward references to classes in fasls can now be loaded.
1036 * bug fix: don't warn on a interpreted->compiled function redefinition
1037 from the same location. (patch by Douglas Katzman, lp#1042405)
1038 * bug fix: Create vectors of proper internal length when reading literal
1039 vectors from FASLs. (Reported by Jan Moringen)
1040 * bug fix: COMPILE can now successfully compile setf functions.
1041 (Reported by Douglas Katzman)
1042 * bug fix: run-program performs more correct escaping of arguments on
1043 Windows. (lp#1239242)
1044 * bug fix: function-lambda-expression on generic functions returns the
1046 * bug fix: (the [type] [constant]) now warns when [constant] matches
1047 [type] except for the number of values. (Reported by Nathan Trapuzzano
1049 * bug fix: signal errors in required cases of slot-definition initialization
1050 protocol. (lp#309072)
1051 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
1052 (thanks to Stelian Ionescu, lp#1242643)
1053 * bug fix: when given a restart object, FIND-RESTART checks whether the
1054 restart is active and, when a condition is supplied, whether the restart
1055 is associated to a different condition (lp#774410)
1057 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
1058 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
1059 shutdown(3). (thanks to Jan Moringen, lp#1207483)
1060 * enhancement: document extensible sequences. (thanks to Jan Moringen,
1062 * optimization: EQUAL and EQUALP transforms are smarter.
1063 (thanks to Elias Martenson, lp#1220084)
1064 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
1065 * bug fix: probe-file now can access symlinks to pipes and sockets in
1066 /proc/pid/fd on Linux. (reported by Eric Schulte)
1067 * bug fix: SBCL can now be built on Solaris x86-64.
1068 * bug fix: Floating point exceptions do not persist on Solaris anymore.
1069 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
1070 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
1072 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
1073 (thanks to Stephan Frank)
1074 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
1075 (thanks to Stephan Frank, lp#1206191)
1076 * bug fix: sb-safepoint can now reliably handle signal interruptions of
1077 foreign code. (lp#1133018)
1078 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
1079 constructors no longer fails to merge actual and default initargs
1080 (thanks to Jan Moringen, lp#1179858)
1081 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
1082 constructors handles non-KEYWORD initialization arguments more correctly.
1083 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
1084 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
1085 * bug fix: class definitions with CPLs inconsistent with their metaclasses
1086 are less likely to destroy the object system's integrity. (lp#309076)
1087 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
1088 standard. (lp#1203585, thanks to Jan Moringen)
1089 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
1090 settings. (lp#1023721)
1091 * bug fix: getting the order of arguments to
1092 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
1093 rather than a failed AVER. (reported by Paul Nathan)
1094 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
1095 arguments during copying on x86 and x86-64; it may still happen on other
1096 platforms when there are more fixed arguments than stack slots.
1097 (reported by Jan Moringen)
1099 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
1100 * enhancement: support building the manual under texinfo version 5.
1102 * enhancement: Windows builds no longer display the "Kitten of Death" message.
1103 A warning is instead appended to the regular banner, and may be muted with
1104 --noinform. (lp#728247)
1105 * enhancement: support building under new linker handling of syscalls under
1106 NetBSD. (thanks to Robert Swindells)
1107 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
1108 (regression since 1.1.9)
1109 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
1110 compiler macro. (thanks to Douglas Katzman).
1111 * bug fix: signal a warning when defining a setf-function when a
1112 setf-expander is already present. (thanks to Douglas Katzman).
1113 * bug fix: improved threading on PPC.
1114 * bug fix: ROOM works again on Windows. (lp#1206456)
1115 * bug fix: Streams were flushed even when there was one byte still left in
1116 the buffer. (lp#910213)
1117 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
1118 either NIL or :ERROR. (reported by Jan Moringen)
1120 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
1121 * enhancement: ASDF has been updated to 3.0.2.
1122 * optimization: stack frames are packed more efficiently on x86oids, which
1123 ought to reduce the frequency of Methuselahn conservative references (it
1124 certainly helps with gc.impure.lisp / BUG-936304 on x86).
1125 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
1126 recognized in modular arithmetic contexts, and compile to native negate,
1127 rather than going through bignums only to keep the low bits.
1128 * bug fix: Compiling potential modularic arithmetic forms does not cause type
1129 errors when some integer types lack lower or upper bounds. (lp#1199127)
1130 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
1131 bitwidth before being used in a non-modular context. (lp#1199428)
1132 * bug fix: Multiple catch/unwind blocks in a single function are now
1133 allocated in the right stack order on win32. (lp#1072739)
1135 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
1136 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
1137 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
1138 * enhancement: disassemble now annotates some previously missing static
1139 functions, like LENGTH.
1140 * enhancement: clean.sh now also cleans doc/internals.
1141 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
1142 print a symbol with a package prefix.
1143 * enhancement: The debugger and backtracing are more robust against buggy
1144 PRINT-OBJECT methods.
1145 * optimization: calls to static functions on x86-64 use less instructions.
1146 * optimization: compute encode-universal-time at compile time when possible.
1147 * optimization: when referencing internal functions as #'x, don't go through
1148 an indirect fdefn structure.
1149 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
1150 * optimization: (mod fixnum) type-checks are performed using one unsigned
1151 comparison, instead of two.
1152 * optimization: enable more modular arithmetic transforms in the presence of
1154 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
1155 when the result is known to be negative.
1156 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
1157 * optimization: comparisons between rationals and constant floats or between
1158 integers and constant ratios are now converted to rationals/integers at
1160 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
1161 * bug fix: problems with NCONC type derivation (reported by Jerry James).
1162 * bug fix: EXPT type derivation no longer constructs bogus floating-point
1163 types. (reported by Vsevolod Dyomkin)
1164 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
1165 addrinfo. (lp#1187041, patch by Jerry James)
1166 * bug fix: uninitialized type-error conditions can now be printed.
1168 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
1169 listening, allowing several tests to run in parallel.
1170 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
1171 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
1173 * bug fix: Specialised SIMD-PACK types can be negated.
1174 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
1175 reported by Eric Marsden)
1176 * bug fix: FP return values from foreign calls are always rounded to single
1177 or double float precision on x87.
1178 * bug fix: Known-safe vector access on x86oids should not fail spuriously
1179 when the index is of the form (+ x constant-positive-integer).
1180 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
1181 * bug fix: backtrace printer no longer tries to create very large lists when
1182 the arg-count register is clobberred by other code. (lp#1192929)
1183 * bug fix: x86 should never signal an FP exception while boxing an FP value,
1184 a situation that lands us into ldb.
1186 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
1187 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
1188 ROOM, plus a few SB-INTROSPECT functions) has been completely
1189 rewritten; it may now exhibit different bugs than before.
1190 * new feature: minimal runtime/compiler intrastructure support for SSE
1191 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
1192 feature :sb-simd-pack. This should enable intrinsics extensions as
1193 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
1194 for maintaining a branch for so long.
1195 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
1196 the working directory of the spawned process.
1197 (lp#791800) (patch by Matthias Benkard)
1198 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
1199 stack-allocated on PPC.
1200 * enhancement: "fixed objects" can now be stack-allocated on PPC.
1201 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
1202 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
1203 also returns VOPs which do not translate any functions, and finds
1204 defoptimizer types ir2convert and stack-allocate-result.
1205 * enhancement: better type derivation for APPEND, NCONC, LIST.
1207 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
1208 heap in a manner similar to the GC rather than its previous ad-hoc
1209 scheme, and is therefore no less and possibly more accurate.
1210 * fixes and enhancements related to Unicode:
1211 ** the character database information has been updated to Unicode 6.2;
1212 ** support for canonical and compatibility decomposition of characters has
1213 been added, along with support for primary composition;
1214 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
1215 NFKD) has been included;
1216 ** querying the character database for code points not defined by Unicode
1217 gives less wrong answers (lp#1178038, reported by Ken Harris)
1218 * enhancement: print intermediate evaluation results for some ASSERTed
1219 expressions. (lp#789497) (patch by Alexandra Barchunova)
1220 * enhancement: x86-64 disassemblies are annotated with unboxed constant
1221 values when there are references to (RIP-relative) unboxed constants.
1222 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
1223 of quadratically with the size of the input in the worst case.
1225 * bug fix: handle errors when initializing *default-pathname-defaults*,
1226 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
1227 decoding errors, or directories being deleted.
1228 * bug fix: Loading a core with a discontiguous dynamic space now correctly
1229 computes the amount of dynamic space used.
1230 * bug fix: disassembler missing ",8" on SHLD
1231 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
1232 that provide an "invalid" stack frame link for the signal handler
1233 itself now use the saved-fp-and-pc mechanism to pick up from the stack
1234 frame in the interrupt (signal) context. This is known to affect
1235 threaded FreeBSD/x86-64.
1236 * bug fix: some LOOP statements couldn't be compiled.
1238 * bug fix: sb-sequence:dosequence works on literal vectors.
1239 * bug fix: errors in generic arithmetic show the assembly routine's
1240 caller on x86 and x86-64. (lp#800343)
1241 * bug fix: Compile-time type errors should never result in COMPILE-FILE
1242 failure. (lp#943953)
1243 * bug fix: Known bad local calls do not cause strange failures when
1244 emitting or dumping code. (lp#504121)
1245 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
1246 codegen errors: type checks are inserted as necessary. (lp#1177703)
1247 * bug fix: Unsigned modular arithmetic is correctly converted into signed
1248 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
1249 * bug fix: a combination of inlined local function with &optional and
1250 recursion no longer causes undescriptive compiler errors. (lp#1180992)
1251 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
1252 when testing for non-zero-ness.
1253 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
1255 * bug fix: Type mismatch for the value of conditional expressions are
1256 correctly reported when detected at compile-time, instead of complaining
1257 about a constant NIL (similar for non-EQ-comparable catch tags).
1258 * bug fix: Referring to INLINE global functions as values should not result
1259 in a compilation failure. (lp#1035721)
1260 * optimization: faster ISQRT on fixnums and small bignums
1261 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
1262 * optimization: On x86-64, the number of multi-byte NOP instructions used
1263 for code alignment is now always minimal.
1264 * optimization: On 64-bit targets, the compiler generates much faster
1265 code for type checks for types known at compile time that are smaller
1266 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
1267 their COMPLEX variants.
1268 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
1269 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
1270 * optimization: ROOM no longer conses so egregiously on non-x86oid
1272 * optimization: associative bitwise operations reassociate patterns like
1273 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
1275 * optimization: quasiquote expressions now perform more constant folding,
1276 instead of consing equal lists at runtime. (lp#1026439)
1277 * optimization: local call analysis of inlined higher-order function
1278 should converge more quickly, resulting in better code for complex
1280 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
1281 integer constants are handled more cleverly, especially when they
1282 can be represented as sign-extended (signed-byte 32). (Based on a
1283 patch by Douglas Katzman)
1284 * optimization: IF/IF conversion should reliably result in sane code
1285 when (some of) the results of the inner IF are always false or
1287 * optimization: On x86oids, variable right shifts of machine words are
1288 compiled into straight SAR/SHR, instead of going through the generic
1291 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
1292 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
1294 * bug fix: :allocation slot option works for condition slots
1296 * bug fix: redefining conditions does not lead to multiple evaluations of
1297 hairy slot initfunctions anymore (lp#1164969)
1298 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
1300 * bug fix: function constants now work as initforms and default initarg
1301 values of conditions (lp#539517)
1302 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
1303 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
1304 * bug fix: no more bogus ## references when pretty printing backquoted
1305 forms with non-trivial structure sharing. (lp#1161218)
1306 * bug fix: Don't signal an error on (setf (documentation nil 'function)
1307 "doc"). Signal a style-warning instead when trying to set documentation
1308 of NIL for all other documentation types. (Reported by Zach
1309 Beane; regression since 2e52fa05.)
1310 * bug fix: modular arithmetic involving large constants and conditionals
1311 should no longer result in spurious dead code elimination. (Reported by
1313 * bug fix: our mach exception handler can seemingly called very early in
1314 the program execution process on OS X 10.8.0. Try and handle that case
1315 robustly, without potentially leaking mach ports too much.
1316 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
1318 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
1319 * enhancement: the continuable error when defknown-ing over extant
1320 fndb entries can be ignored by passing :overwrite-fndb-silently t
1321 as a keyword argument to sb-c:defknown (after attributes). Useful
1322 to allow defknown to be re-loaded. Use with :allow-other-keys t
1323 for backward compatibility.
1324 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
1326 * bug fix: Prevent a make-array transform from modifying source forms
1327 causing problems for inlined code. Thanks to Bart Botta.
1328 (regression since 1.0.42.11-bis)
1329 * bug fix: clear-output calls the correct gray stream routine,
1330 sb-gray:stream-clear-output. (lp#1153257)
1331 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
1333 * bug fix: Better error messages for package operations (lp#1154776)
1334 * bug fix: delete-package on a nonexistent package should signal a cerror.
1335 (regression since 1.0.37.44).
1336 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
1337 (lp#1154946, lp#1072112)
1338 * bug fix: compiling make-array no longer signals an error when the
1339 element-type is an uknown type, a warning is issued instead.
1340 Thanks to James Kalenius (lp#1156095)
1341 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
1342 produces wrong results for some inputs. (Thanks to Jan Moringen.)
1345 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
1346 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
1348 * new feature: package local nicknames. See manual for details.
1349 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
1350 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
1351 * enhancement: easier to use restarts for resolving name-conflicts
1352 resulting from IMPORT, EXPORT, or USE-PACKAGE.
1353 * enhancement: variant DEFPACKAGE forms now signal a full error with
1354 restarts provided for resolving the situation. (lp#891351)
1355 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
1356 DEFPACKAGE forms can now signal a full error with restarts provided for
1357 resolving the situation. See manual for details. (lp#891351)
1358 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
1359 (Thanks to Anton Kovalenko.) (lp#1102748)
1360 * enhancement: backtrace improvements
1361 ** secondary CLOS dispatch functions have better debug names (lp#503081)
1362 ** easier to read method names in backtraces. See
1363 SB-DEBUG:*METHOD-FRAME-STYLE*.
1364 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
1365 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
1366 SB-DEBUG:BACKTRACE-AS-LIST.
1367 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
1368 information is available in less intrusive form as frame annotations.
1369 * enhancement: SB-POSIX now provides MAP-ANON.
1370 * enhancement: test-suite results are colorized, failures in red, unexpected
1371 success in green. Works on Windows and on terminals with ANSI escape code
1372 support. Can be disabled with --no-color.
1373 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
1374 (thanks to James M. Lawrence)
1375 * bug fix: no more unused variable style warnings from RESTART-CASE
1376 macroexpansion (lp#1113859)
1377 * bug fix: no more unused variable style warnings when loading
1378 sb-bsd-sockets.asd (lp#1114681)
1379 * bug fix: deleting a package removes it from implementation-package
1380 lists of other packages.
1381 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
1382 This does not fix the occasional "interrupt already pending" issue, though.
1383 * bug fix: (setf (documentation 'x 'function)) and
1384 (setf (documentation #'x t)) set documentation in different places.
1385 (regression since 1.0.43.63)
1386 * bug fix: build on newer glibc. (lp#1095036)
1388 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
1389 * optimization: LOOP expressions using "of-type character" have slightly
1390 more efficient expansions.
1391 * bug fix: very long (or infinite) constant lists in DOLIST do not result
1392 in very long compile times or heap exhaustion anymore. (lp#1095488)
1393 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
1394 * bug fix: adjust-array ignored :initial-element for simple-vectors.
1396 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
1397 longer cause infinite loops (on circular data) or violate eqlity
1398 constraints. (lp#1099708)
1399 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
1401 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
1402 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
1404 * enhancement: support for C-c to interrupt the foreground thread
1405 on Windows. (Thanks to Anton Kovalenko.)
1406 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
1407 * enhancement: Safepoint builds on POSIX platforms can now optionally be
1408 built without pseudo-atomic sequences and their run-time overhead.
1409 * enhancement: Threads created outside of Lisp can enter Lisp through
1410 alien callbacks and appear as Lisp threads for the duration of that
1411 function invocation. On safepoint builds only.
1412 * enhancement: Miscellaneous improvements to namestrings and underlying
1413 calls to OS functions for file system access on Windows. (Thanks to
1415 * enhancement: The MSI installer support for Windows now uses Windows
1416 Installer XML at least version 3.5 and includes various usability
1417 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
1418 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
1419 on Windows. (Thanks to Anton Kovalenko.)
1420 * enhancement: The Windows backend now supports the x86-64 platform.
1421 (Thanks to Anton Kovalenko.)
1422 * bug fix: fasls are now once again directly executable (on platforms
1423 supporting shebang lines, with a suitably-installed sbcl).
1424 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
1425 * bug fix: Fix CAS access to slots of direct instances of structure classes
1426 in the presence of subclasses sharing the same conc-name.
1427 * bug fix: Logical pathname namestrings on Windows have been changed to
1428 be lower-case, to minimize differences between POSIX and Windows.
1430 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
1431 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
1432 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
1433 (NT 5.0) is no longer being maintained.
1434 * notice: Starting with this version, SBCL on Windows no longer supports
1435 building with disabled thread support.
1436 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
1437 * enhancement: New feature sb-dynamic-core allows the runtime to be
1438 rebuilt or relocated without requiring changes to the core file on
1439 all linkage table platforms. Required on Windows. (Thanks to Anton
1441 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
1442 * enhancement: I/O on Windows unnamed pipes is interruptible
1443 asynchronously using interrupt-thread, timers when running on Windows NT
1444 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
1446 * enhancement: Support for the experimental safepoint-based stop-the-world
1447 protocol on the PowerPC platform.
1448 * bug fix: Non-blocking reads from the Windows console were not necessarily
1449 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
1450 * bug fix: stability of threads on Windows has been improved upon through
1451 an updated stop-the-world protocol (thanks to Anton Kovalenko).
1453 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
1454 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
1455 (COMPILE and COMPILE-FILE still do.)
1456 * optimization: the SPARC backend now supports the precise generational
1457 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
1458 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
1459 * enhancement: add experimental support for the SB-THREAD feature and the
1460 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
1461 Threads are enabled by default, and this version of SBCL is considered
1462 to be the last and final release to officially support building with
1464 * optimization: The compiler no longer rotates loops in some cases where
1465 this transformation actually lead to worse code being generated.
1466 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
1467 symbol-macros by lexical bindings.
1468 * bug fix: stack allocation was prevented by high DEBUG declaration in
1470 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
1471 (thanks to SANO Masatoshi)
1472 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
1473 :JUNK-ALLOWED was true.
1474 * bug fix: type derivation inferred overly conservative types for
1475 unions of array types. (lp#1050768)
1477 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
1478 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
1479 source annotation of DISASSEMBLE output. Defaults to T.
1480 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
1481 WAIT-P argument added to WITH-RECURSIVE-LOCK.
1482 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
1484 * enhancement: Optional features (not enabled by default) allow the
1485 use of signals for inter-thread synchronization to be reduced on certain
1486 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
1487 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
1488 to test these experimental features. Known remaining bugs include minor
1489 thread safety issues, less timely freeing of memory by GC, and certain
1490 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
1491 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
1492 comparisons, particularly on almost-sorted inputs.
1493 * bug fix: Reading floats with large exponents no longer takes too much time
1494 before reporting that the exponent is too large.
1495 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
1496 correctly when the received datagram is larger than the provided buffer.
1497 (lp#1023438, thanks to Robert Uhl)
1498 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
1499 a SYMBOL-VALUE form with a constant symbol argument.
1500 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
1501 into a DEFCAS defined place was used as the place.
1502 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
1503 for from bit-vectors.
1504 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
1505 lead to internal errors or crashes (lp#1058799).
1506 * documentation: a section on random number generation has been added to the
1509 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
1510 * enhancement: implicit generic function warnings now specify the package
1511 in which the new generic function is being created.
1512 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
1513 updates of CAS-able places (similar to Clojure's swap!).
1514 * enhancement: run-program no longer decodes and re-encodes environment when
1515 :environment argument is not provided. (lp#985904)
1516 * enhancement: errors during compiler-macro expansion no longer cause
1517 runtime errors, only a compile-time warning, otherwise behaving as if
1518 the compiler macro had declined to expand.
1519 * optimization: On x86-64, code alignment of block headers is done with
1520 multi-byte NOPs now instead of repetitions of the single-byte NOP.
1521 * optimization: MAP-INTO is substantially faster when the target sequence is
1522 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
1523 thanks to James M. Lawrence)
1524 * optimization: the compiler no longer heap-conses to check exits in cases
1525 where the exit function is dynamic extent, or when it can prove the exit
1526 function cannot escape. (lp#1002534)
1527 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
1528 element type, and vectors that aren't SIMPLE-ARRAYs.
1529 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
1530 speed (around 1/3 the time in some cases), and a little better in terms of
1531 comparison calls. (Thanks to Takeru Ohta)
1532 * bug fix: On SPARC, a limitation on the number of code constants emittable
1533 by the compiler has been lifted, allowing certain long functions to
1534 compiled and assembled which had previously been unsupported; fixes
1535 cl-bench on this ISA (lp#1008996).
1536 * bug fix: potential for infinite recursion during compilation of CLOS slot
1537 typechecks when dependency graph had loops. (lp#1001799)
1538 * bug fix: error forms reported with some program-errors were not escaped
1540 * bug fix: functions from EVAL are now on more equal footing with functions
1541 from COMPILE. (lp#1000783, lp#851170, lp#922408)
1542 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
1543 objects as its :METHOD-COMBINATION argument, not just lists designating
1544 method combinations. (lp#936513)
1545 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
1547 * bug fix: restore build on solaris/sparc. (lp#1008506)
1548 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
1549 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
1550 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
1551 as keyword arguments no longer accidentally match unevaluated symbols
1553 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
1554 parameter was zero, now it signals an error. (lp#905817, fixed since
1556 * bug fix: run-program with :pty t no longer makes the pty as the process's
1557 controling terminal.
1558 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
1561 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
1562 * RANDOM enhancements and bug fixes:
1563 ** bug fix: the range and distribution of random integers could be
1564 catastrophically wrong when the compiler derived the type of its
1565 argument as a disjoint set of small integers.
1566 ** bug fix: the distribution of random integers is now completely
1567 uniform even when the specified limit is not a power of two.
1568 (Previously some values could be about 0.1 % more probable than
1569 others in the worst case.) (lp#309467)
1570 ** RANDOM on large integer arguments is generally faster and conses
1571 less than before; this is visible for fixnums above a length of
1572 about 24 bits, but extremely so for bignums: the old implementation
1573 used time and space quadratical in the size of the argument there,
1574 the new one is linear.
1575 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
1576 main entry point, SB-EXT:QUIT is deprecated.
1577 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
1578 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
1579 * enhancement: FASL loading no longer grabs the world-lock.
1580 * enhancement: GENCGC reclaims space more aggressively when objects being
1581 allocated are a large fraction of the total available heap space.
1583 * enhancement: backtraces show the correct number of arguments for frames
1584 called with too many arguments.
1585 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
1587 * enhancement: ASDF has been updated 2.21.
1588 * optimization: fewer uses of full calls to signed modular functions.
1590 * optimization: typechecking alien values is typically 5 x faster.
1591 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
1593 * bug fix: file compilation performance issues when dumping subtypes
1594 of CHARACTER (lp#994487)
1595 * bug fix: fixed disassembly of some SSE instructions on x86-64.
1596 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
1597 OPEN. (lp#969352, thanks to Kambiz Darabi)
1598 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
1600 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
1601 classoid even if X was not the proper name of the class. (lp#941102)
1602 * bug fix: declaration leakage between lexical environments due to careless
1603 use of NCONC in MAKE-LEXENV. (lp#924276)
1604 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
1605 *default-pathname-defaults* contains NAME or TYPE components.
1606 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
1607 from CL package, e.g. (loop . 10).
1608 * bug fix: run-program with existent or non-existent files for :output or
1609 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
1610 returns NIL instead of signalling an obscure error.
1611 * bug fix: fix miscompilation of some logand forms with large constant
1612 arguments. (lp#974406)
1613 * bug fix: account for funcallable-instance objects properly in ROOM.
1614 * bug fix: incorrect octets reported for c-string decoding errors.
1616 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
1618 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
1619 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
1620 allowing faster release of memory back to the OS. (lp#991293)
1621 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
1622 existing deadline for the dynamic scope of its body.
1623 * bug fix: compiler-internal interval arithmetic needed to be more
1624 conservative about open intervals when operated on by monotonic but not
1625 strictly-monotonic functions. (lp#975528)
1626 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
1627 it's also slightly faster. (lp#998926)
1628 * bug fix: better error messages for malformed declarations.
1630 * bug fix: define-condition didn't return the name of the defined condition.
1632 ** improved docstrings: REPLACE (lp#965592)
1634 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
1635 * bug fix: fix copy-structure. When copying from stack to heap, garbage
1636 could end up in the heap making GC unhappy.
1637 (Thanks to James Knight, lp#911027)
1639 ** SBCL can now be built using Clang.
1640 ** ASDF has been updated 2.20.
1641 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
1642 * bug fix: don't complain about a too-hairy lexical environment for inlining
1643 when the function has never been requested for inlining. (lp#963530)
1645 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
1646 * enhancements to building SBCL using make.sh:
1647 ** --fancy can be specified to enable all supported feature enhancements.
1648 ** --with-<feature> and --without-<feature> can be used to specify
1649 which features to build with.
1650 ** --arch option can be used to specify the architecture to build for.
1651 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
1652 full-blows cross-compilation.)
1653 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
1654 which allows specifying name of the default interning package for the
1656 * enhancement: when *READ-EVAL* is true, arrays with element type other than
1657 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
1658 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
1659 null alien when malloc() fails. (lp#891268)
1660 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
1661 conditions can be conveniently accessed through function with the same
1662 name, analogously to CONTINUE.
1663 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
1664 from the printer by type, causing an error marker to be printed instead.
1665 (Thanks to Attila Lendvai)
1666 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
1667 generally behave better when errors occur during printing.
1668 * enhancement: the test runner now takes a --report-skipped-tests argument
1669 to report the individual tests skipped as well as the number of skipped
1671 * enhancement: undefined functions now appear in backtraces as ("undefined
1672 function") instead of ("bogus stack frame") on x86oids.
1673 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
1674 deadlock errors are reported in an easier-to-decipher manner.
1675 * enhancement: DESCRIBE on type designators reports the expansion in more
1677 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
1678 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
1679 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
1680 * enhancement: better disassembly of segment-prefixes on x86 and other
1681 instruction prefixes (e.g. LOCK) on x86 and x86-64.
1682 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
1683 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
1684 * optimization: SUBSEQ on vectors of unknown element type is substantially
1686 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
1687 be stack-allocated. (lp#902351)
1688 * optimization: the compiler is smarter about representation selection for
1689 floating point constants used in full calls.
1690 * optimization: the compiler no longer refuses to coerce large fixnums to
1691 single floats inline, except on x86 where this limitation is still
1693 * optimization: truncation operations on integers with constant divisor
1694 arguments 1 and -1 are optimized away.
1695 * bug fix: deadlock detection could report the same deadlock twice, for
1696 two different threads. Now a single deadlock is reported exactly once.
1697 * bug fix: interval-arithmetic division during type derivation did not
1698 account for signed zeros.
1699 * bug fix: compiler error when typechecking a call to a function with
1700 non-constant keyword arguments.
1701 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
1702 * bug fix: condition slot accessors no longer cause undefined function
1703 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
1704 form that defines them. (lp#896379)
1705 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
1706 by ANSI. (lp#894202)
1707 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
1708 bogusly report NIL, T.
1709 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
1710 required arguments ignored and performed assignments to others.
1712 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
1713 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
1714 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
1715 * bug fix: redefining a function whose previous definition contained an
1716 unknown type no longer causes a style-warning. (lp#806243)
1717 * bug fix: undefined functions now appear in backtraces as ("undefined
1718 function") instead of ("bogus stack frame") on non-x86oids.
1719 * bug fix: backtraces are no longer cut off at ("undefined function") when
1720 called under certain circumstances (involving a caller-allocated stack
1722 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
1723 systems. (regression since 1.0.53)
1724 * bug fix: GC deadlocks from dladdr() on certain platforms.
1725 * bug fix: broken standard streams no longer automatically cause recursive
1726 errors on debugger entry.
1727 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
1728 (regression since 1.0.53)
1729 * bug fix: attempts to stack allocate a required argument to a function with
1730 an external entry point caused compiler-errors.
1731 * bug fix: compiler notes for failed stack allocation for a function argument
1732 no longer claim to be unable to stack allocate the function.
1733 * bug fix: COERCE now signals a type-error on several coercions to
1734 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
1735 * bug fix: missing failure-to-stack-allocate compiler notes for some
1736 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
1737 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
1739 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
1741 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
1742 * minor incompatible changes:
1743 ** RENAME-FILE on a symbolic links used to rename the linked-to file
1744 instead of the link.
1745 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
1746 directory, but now signal an error instead. Use TRUENAME to resolve the
1747 pathname if you wish to delete the linked directory, and DELETE-FILE if
1748 you wish to delete the
1749 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
1750 symbols associated with it will trigger a compile-time warning.
1751 * thread-related enhancements:
1752 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
1753 Many thanks to generous donors!)
1754 ** Threading is now more reliable on non-Linux platforms. We still don't
1755 consider threads on non-Linux platforms good enough to enable them by
1756 default, but they're in a clearly better shape now.
1757 ** Deadlines supported now on all platforms.
1758 ** All blocking functions in the threading API now have a :TIMEOUT
1760 ** Semaphore notification objects have been added to SB-THREAD.
1761 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
1762 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
1763 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1764 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
1765 using an API anologous to defining new SETFable places.
1766 * GC-related enhancements and bug fixes:
1767 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
1768 and Gb suffixes. Default is megabytes as before.
1769 ** on GENCGC targets, the default dynamic space size is now 512Mb for
1770 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
1771 exception, defaulting to mere 444Mb to fit under default ulimits.) The
1772 new defaults are in place to prevent hitting swap on low-end systems.
1773 Use build-time option --dynamic-space-size to build an SBCL with
1774 another default, or the runtime option to adjust the size at startup: a
1775 good size is at most equal to the amount of physical memory the system
1777 ** on GENCGC targets, nursery and generation sizes now default to 5% of
1779 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
1780 refuses to create SIMPLE-FUN objects.
1781 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
1783 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
1784 validation of pointer objects as GENCGC does, instead of a
1785 comparatively weak bounds-check against the heap spaces.
1786 * SB-BSD-SOCKETS bug fixes:
1787 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
1788 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
1789 systems with getaddrinfo().
1790 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
1791 safe outside systems with getaddrinfo().
1792 * enhancement: ASDF has been updated 2.019.
1793 * enhancement: special-case TCO prevention for functions which never return
1794 extended to untrusted types, keeping one more frame's worth of debug
1795 information around in many cases.
1796 * enhancement: debug-names of anonymous and local function are more
1797 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
1798 * enhancement: on win32, ABS of complex floats guards better against
1799 overflows. (lp#888410)
1800 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
1801 process exiting with code 1. (lp#676987)
1802 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
1803 the system where on the filesystem the SBCL sources themselves are
1804 located. (Thanks to Zach Beane)
1805 * enhancement: the compiler is now able to derive tighter bounds for
1806 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
1807 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
1808 correctly, even on wide-fixnum builds. (lp#887220)
1809 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
1810 resolved to directories.
1811 * bug fix: type mismatch when assigning to lexical variables no longer
1812 result in fasl-dumping internal type objects. (lp#890750)
1813 * bug fix: type mismatch on (SETF AREF) and function return values no
1814 longer result in fasl-dumping internal type objects.
1815 * bug fix: With several combinations of argument types, for example (EXPT
1816 <integer> <(complex double)>), EXPT now uses double-precision throughout
1817 instead of partially calculating only to single-precision. (lp#741564;
1818 thanks to Lutz Euler)
1819 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
1820 objects when interrupted by GC on PPC.
1822 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
1823 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
1824 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
1825 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
1826 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
1827 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
1828 targets is now 63 bits (up from 61).
1829 * enhancement: DESCRIBE now reports a lambda-list and source location
1830 for complext setf-expanders.
1831 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
1832 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
1833 of multiple-valued places to be set to NIL, instead of signalling an
1834 error (per a careful reading of CLHS 5.1.2.3).
1835 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1836 * bug fix: repair crash in x86oid darwin signal handling emulation
1837 when built with certain compilers.
1838 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1839 rotation arguments on x86-64. (lp#882151)
1840 * bug fix: low-level control flow optimisations could result in bogus
1841 code in functions with tail and non-tail calls to local functions on
1842 x86oids. (lp#883500)
1843 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1844 to emit literal characters > (code-char 4095), for comparisons with
1845 constant characters.
1846 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1847 on 64 bit platforms. (lp#881445)
1848 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1849 delete the wrong file when using relative pathnames. (lp#882877)
1850 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1851 sequences and :KEY NIL.
1853 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1854 * enhancement: ASDF has been updated to version 2.017.
1855 * enhancement: the --core command line option now accepts binaries with
1857 * enhancement: when built with :sb-core-compression, core files (regular
1858 or executable) can be compressed with zlib. Use the :COMPRESSION
1859 argument to SAVE-LISP-AND-DIE to specify a compression level.
1860 * enhancement: --[no-]merge-core-pages determines whether the runtime
1861 hints the operating system that identical core pages between SBCL
1862 processes should share the same physical memory. Default is to only
1863 enable this for compressed cores.
1864 * optimization: SLEEP no longer conses.
1865 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1866 or bit-vectors when using the standard pretty-print dispatch table.
1867 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1869 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1870 AREF, CHAR, etc. (lp#826971)
1871 * bug fix: compiler-errors causes by integer arguments with composed of
1872 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1873 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1874 expressions. (lp#770184)
1875 * bug fix: complex single float literals are correctly aligned when used
1876 as arguments of arithmetic operators.
1877 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1878 fixnum is correct. (reported by Peter Keller)
1879 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1880 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1882 * bug fix: redefining classes such that slots with custom allocation are
1883 added or removed works again.
1885 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1886 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1887 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1888 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1889 * enhancement: added support for socket keepalive timeout intervals
1890 and probe counts on Linux.
1891 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1892 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1893 * enhancement: added new toplevel options --quit and --non-interactive
1895 * enhancement: the Windows port of SBCL now builds and runs on Wine
1896 (thanks to Anton Kovalenko).
1897 * enhancement: more, and more correct, SSE instruction definitions on
1898 x86-64 (thanks to Alexander Gavrilov).
1899 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1900 to help the processor execute spin loops, when applicable. Currently
1901 implemented for x86 and x86-64.
1902 * optimization: unsigned integer divisions by a constant are implemented
1903 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1904 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1905 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1906 instructions. (lp#814688)
1907 * bug fix: COERCE to unfinalized extended sequence classes now works.
1908 (reported by Jan Moringen; lp#815155)
1909 * bug fix: a compiler error during typecheck generation, reported by Eric
1910 Marsden. (lp#816564)
1911 * bug fix: obsolete instance protocol fires when shared slots are added
1913 * bug fix: fixed-format floating point printing with scaling factors.
1915 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1916 backtraces. (lp#818460)
1917 * bug fix: better backtraces for interrupted syscall frames on x86.
1919 * bug fix: SSE comparison instructions can be disassembled even when one
1920 operand is in memory. (lp#814702)
1921 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1922 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1923 type information associated with the VALUES form.
1924 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1926 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1927 first write (lp#561642).
1928 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1929 * bug fix: bound propagation involving conversion of large bignums to
1930 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1932 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1933 functions; reported by Lutz Euler (lp#826459).
1934 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1937 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1938 * enhancement: errors from FD handlers now provide a restart to remove
1939 the offending handler.
1940 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1942 * enhancement: location of user or system initialization file can now easily
1943 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1944 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1945 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1946 the thunk, as a keyword argument, :arguments.
1947 * enhancement: constraint propagation is simplified (and sped up) when
1948 COMPILATION-SPEED > SPEED.
1949 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1950 * enhancement: debugger understands &MORE arguments better.
1951 * optimization: extracting bits of a single-float on x86-64 has been
1952 optimized. (lp#555201)
1953 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1954 when (> SPEED SPACE).
1955 * optimization: local call trampolines (x86 and x86-64) are emitted
1957 * optimization: implicit value cells for dynamic-extent closed-over bindings
1958 on x86 and x86-64 can hold unboxed values as well.
1959 * meta-optimization: improved compilation speed, especially for large
1960 functions. (lp#792363 and lp#394206)
1961 * bug fix: bound derivation for floating point operations is now more
1962 careful about rounding possibly closing open bounds. (lp#793771)
1963 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1964 backwards incompatible change in 1.0.48.27)
1965 * bug fix: occasional debugger errors in when a type-error occured in a
1966 function with dynamic-extent &rest list.
1967 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1968 boa-construtors can be used to initialized structure slots.
1969 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1970 (lp#795705, regression)
1971 * bug fix: DIRECTORY works better on logical pathnames.
1972 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1973 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1974 * bug fix: the compiler no longer constant-folds NaNs in
1975 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1976 * bug fix: FORMAT now handles floating point rounding correct, eg.
1977 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1979 * bug fix: style warning during lambda-list introspection of generic
1980 functions with both optional and key argments.
1981 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1982 folding. (lp#729765)
1983 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1986 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1987 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1988 interrupts for its body.
1989 * enhancement: source locations are now available for files loaded as
1990 source, compile-time-too evaluation, and initialization files.
1991 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1992 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1993 when a temporary file is used for compilation.
1994 * enhancement: ASDF has been updated to version 2.015.3.
1995 * enhancement: backtraces involving frames from the default evaluator are
1997 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1999 * enhancement: more informative compile-time warnings and runtime errors for
2000 type-errors detected at compile-time.
2001 * enhancement: deadlock detection for mutexes and spinlocks.
2002 * enhancement: dynamic-extent for &rest lists stack allocate only their
2003 spines, not their argumets. While portable code should not rely on this,
2004 particularly in combination with inlining, it should make dynamic-extent
2005 easier to use safely.
2006 * enhancement: SB-POSIX improvements:
2007 ** WNOHANG and WUNTRACED are exported.
2008 ** SYSCALL-ERROR now also provides the name of the failing system call.
2009 * enhancement: --script improvements:
2010 ** errors on standard input, output, and error streams are handled and
2011 cause scripts to exit silently, making them easier to use in shell
2013 ** backtraces from scripts now go to standard error instead of the
2014 terminal even if one is available.
2015 ** --script can be an argument, causing the script to be loaded from
2017 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
2018 strings to foreign memory.
2019 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
2020 a file, making it easier to understand heap dynamics.
2021 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
2022 allows the compiler to automatically elide rest-list allocation so long as
2023 the call sites are in functions that the compiler knows cannot escape.
2025 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
2026 especially in safe code when none of the required arguments have changed
2028 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
2029 uninterruptible, as well as blocking reads from socket streams created
2030 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
2031 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
2032 from the to-char if the from-char is not a dispatch-macro character.
2033 * bug fix: references to undefined variables in function calls that are
2034 optimized away now signal a runtime error. (lp#722734)
2035 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
2036 types from a function defined in the same file. (regression from
2038 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
2040 * bug fix: spurious errors during QUIT when standard streams were closed.
2042 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
2043 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
2044 years, is now no longer supported.
2045 * enhancement: read() and write() have been added to SB-POSIX.
2046 * enhancement: types of DEFSTRUCT constructors are proclaimed more
2047 accurately, allowing better typechecking of call-sites.
2048 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
2049 are no longer caught. (reverted to pre 1.0.34 behaviour)
2050 * optimization: slightly faster ISQRT. (lp#713343)
2051 * bug fix: better support for Solaris /bin/sh in sh-based tests.
2052 * bug fix: TRACE behaves better when attempting to trace undefined
2053 functions. (lp#740717)
2054 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
2055 to (FUNCALL #'(LAMBDA ...) ...).
2056 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
2057 a compile-time error. (lp#720382)
2058 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
2060 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
2061 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
2062 optimization. (regression from 1.0.45.18/1.0.46.15)
2063 * bug fix: package locks did not protects against compile-time side-effects
2064 of DEFUN. (lp#675584)
2065 * bug fix: --dynamic-space-size argument is validated more carefully.
2067 * bug fix: memory fault from printing a malformed simple-condition.
2069 * bug fix: redefining classes so that slot-definition classes change now
2070 engages the obsolete instance protocol. (lp#766271)
2071 * bug fix: constant improper lists could break source coverage recording.
2073 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
2074 could exhaust stack.
2076 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
2077 * bug fix: fix mach port rights leaks in mach exception handling code on
2078 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
2080 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
2081 * enhancement: redefinition warnings for macros from different files. (lp#434657)
2082 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
2083 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
2084 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
2085 processed using EVAL -- now the appropriate toplevel form is reported instead.
2086 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
2087 declarations. (lp#726331)
2088 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
2089 that NIL/NULL is excluded from the type.
2090 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
2092 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
2093 and its compatriots.
2094 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
2095 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
2096 stack-allocated values out of their dynamic-extent. (lp#310175)
2097 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
2098 x86-64 builds caused a type-error.
2099 * bug fix: calling COMPILE with something else than a lambda-expression as the
2100 second argument reports a more sensible error. (lp#718905)
2101 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
2102 are detected. (lp#520607)
2103 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
2105 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
2106 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
2107 methods. (regression from 1.0.45.18)
2108 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
2109 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
2110 * bug fix: several foreign functions accepting string also accepted NIL and
2111 consequently caused a memory fault at 0 now signal a type-error instead.
2113 * bug fix: under rare circumstances, constraint propagation could rewrite a
2114 variable reference to refer to a variable not in scope, causing an error
2115 during physical environment analysis when attempting to close over the
2116 variable. (lp#551227)
2117 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
2119 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
2120 * enhancement: largefile support on Solaris.
2121 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
2122 arguments (lp#710017)
2123 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
2124 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
2126 * optimization: ERROR and CERROR are approximately 5 times faster.
2127 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
2128 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
2129 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
2130 up instance creation in those cases.
2131 * optimization: arithmetic operations with multiple constant arguments in now
2132 have them reduced at compile-time. (lp#676414)
2133 * optimization: determining current character position on string-streams for
2134 pretty-printing was overly slow.
2135 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
2136 lifetime analysis to overwrite closed-over variables (lp#681092).
2137 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
2138 were not handled correctly (lp#713063).
2139 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
2141 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
2142 mistake. (lp#667297).
2143 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
2144 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
2145 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
2146 unintern the wrong symbol with the same name. (lp#693796)
2147 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
2148 making it possible to restore the initial table if it has been messed up.
2151 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
2152 * enhancement: ~/ and ~user/ are treated specially in pathnames.
2153 Refer to documentation for details.
2154 * enhancement: ASDF has been updated to version 2.010.
2155 * optimization: mutated closed-over variables that are only accessed by
2156 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
2157 declared to be DYNAMIC-EXTENT) are stored directly in their containing
2158 stack frame, rather than allocating a VALUE-CELL (lp#586103).
2159 * optimization: UNWIND-PROTECT cleanup functions are now declared
2161 * bug fix: backtracing function with &REST arguments now shows the full
2162 argument list. (lp#310173)
2163 * bug fix: return types for functions with complex lambda-lists are now
2164 derived properly (lp#384892)
2165 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
2166 long string arguments slowed the compiler down to a crawl.
2167 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
2168 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
2169 in the DEFMETHOD body.
2170 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
2171 messages, being instead replaced with the corresponding function name.
2172 * bug fix: don't derive overly complex unions of numeric types for arithmetic
2173 operators. (lp#309448)
2175 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
2176 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
2177 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
2178 * enhancement: ALLOCATION-INFORMATION also provides the page the object
2180 * enhancement: default dynamic-space size can be configured at build-time
2181 without touching source, using the --dynamic-space-size argument to make.sh.
2182 * enhancement: DESCRIBE recognizes symbols naming optimization policy
2183 qualities, and mentions ALWAYS-BOUND declarations.
2184 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
2186 * enhancement: ASDF has been updated to 2.009.
2187 * enhancement: the system detects known type-erros in calls better,
2188 signalling a full warning about violated proclaimed FTYPEs and violations
2189 of derived FTYPEs within the same file, including self-calls.
2190 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
2191 * optimization: constant-folding exploits numeric and character types, in
2192 addition member types.
2193 * optimization: numeric, character and member types that are inhabited by
2194 exactly one value are tested with EQL.
2195 * optimization: more conditional branches are eliminated during IR1.
2196 Branches are simplified before performing if/if-conversion, and simple
2197 equivalent branches (that only read the same constant or variable) are
2199 * improvements to the Windows port:
2200 ** change: canonical unparsing form for pathname namestrings now uses / as
2201 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
2202 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
2203 on Windows. (thanks to Kalyanov Dmitry)
2204 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
2206 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
2207 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
2208 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
2209 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
2211 * bug fix: interrupts arriving during CL:OPEN caused an error.
2212 * bug fix: overeager character buffering could cause input to block
2213 spuriously when reading from a pipe (lp#643686)
2214 * bug fix: more efficient timer expiry should avoid starvation on systems
2215 where number of SIGALRMs per second is restricted. (lp#375515)
2216 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
2217 * bug fix: compile-times no longer scale linearly with the size of
2218 quoted lists in source-code. (lp#654289)
2219 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
2220 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
2221 so badly. (lp#654485)
2222 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
2223 an error for eg. STRUCTURE. (lp#458015)
2224 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
2225 (lp#613871, thanks to Roman Marynchak)
2226 * bug fix: more reliable &REST list type derivation. (lp#655203)
2227 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
2228 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
2229 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
2230 also declared NOTINLINE. (lp#655581)
2231 * bug fix: the compiler could attempt to emit constant left shifts of
2232 greater value than n-word-bits. (lp#309063)
2233 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
2234 type information for the function being set. (lp#659220)
2235 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
2236 containing self-calls were recompiled with a new signature, and failed
2237 to warn when a self-call using the old signature was left in. (lp#655126)
2238 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
2239 :DEFAULT when the default external had character size other than 8 bits.
2241 * bug fix: derived types of functions in the same file were implicitly
2242 trusted, leading to potential heap corruption when those function were
2243 defined incompatibly. (lp#657499)
2244 * bug fix: existing ASDF source registries are ignored when building
2245 contribs (lp#659105)
2246 * bug fix: short-form DEFSETF checks that the second argument is a symbol
2247 (lp#655824, thanks to Roman Marynchak)
2248 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
2249 package-lock violation was detected. (lp#660752)
2250 * bug fix: the system can store different docstrings for a single function
2251 under different names. (lp#661631, regression from 1.0.29.24)
2252 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
2253 properly. (lp#384801)
2254 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
2255 of specified length could confuse the type derivation in unsafe code.
2257 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
2258 fork with multiple Lisp threads running is made on every platform,
2259 not just Darwin. (lp#451111)
2260 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
2261 around when core was saved, which could cause undefined behaviour when the
2263 * bug fix: Allow UNTRACE of functions that are no longer defined
2264 (lp#667657, thanks to Attila Lendvai)
2265 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
2266 compile-time warning (lp#664373, thanks to Stas Boukarev)
2268 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
2269 * incompatible change: FD-STREAMS no longer participate in the serve-event
2270 event-loop by default. (lp#316072)
2271 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
2272 affects streams from CL:OPEN.
2273 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
2274 default, but this is liable to change: applications needing serve-event
2275 for socket streams should explicitly request it using :SERVE-EVENTS T
2277 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
2279 * enhancement: CLOS effective method functions and defclass slot typechecking
2280 function now have debug names for use in backtraces and profiles.
2281 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
2283 * enhancement: symbols are printed using fully qualified names in several
2284 error and warning messages which are often associated with package
2285 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
2286 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
2287 thanks to Andrew Golding)
2288 * bug fix: reading /proc files on Linux works. (lp#425199)
2289 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
2291 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
2292 breaking code that tried to write the value of a printer control variable.
2293 (lp#581564, thanks to Stas Boukarev)
2294 * bug fix: WRITE compiler macro did not handle output stream designators
2295 correctly. (lp#598374, thanks to Stas Boukarev)
2296 * bug fix: better availability of names of foreign functions in backtraces
2297 on Linux. (lp#626962, thanks to Stas Boukarev)
2298 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
2299 lp#627581, thanks to Josh Elsasser and Jim Wise)
2300 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
2301 thanks to Josh Elsasser)
2302 * bug fix: using aliases for builtin classes as defmethod specializers
2303 without adding DEFTYPEs for them works. (lp#618387)
2304 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
2306 * bug fix: legally dynamic-extent lists and vectors used as
2307 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
2308 * bug fix: inline-expansion creating references to dead lambda-variables
2309 (lp#454681, thanks to Alexey Dejneka)
2310 * bug fix: better error message for bogus numerical arguments to RANDOM.
2311 (lp#598986, thanks to Stas Boukarev)
2312 * bug fix: the compiler occasionally inlined references from incompatible
2313 environments occurs. (lp#308951)
2314 * bug fix: the compiler threw an error when trying to compile a local
2315 function (labels or flet) known to take a specialized complex argument.
2316 (not in launchpad, reported by sykopomp in #lispgames)
2317 * bug fix: package-locks failed to protect against compile-time effects of
2318 DEFUN when the symbol previously had a macro definition. (lp#576637)
2319 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
2320 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
2321 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
2322 * bug fix: evaluation in debugger REPL works using the global context when
2323 in frames that do not have sufficient debug information.
2324 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
2326 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
2328 * bug fix: interrupt taking longer than the requested period caused SLEEP
2329 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
2331 changes in sbcl-1.0.42 relative to sbcl-1.0.41
2333 ** Cross-compilation host is now specified to make.sh using
2334 command-line argument --xc-host=<command> instead of a positional
2335 argument. (thanks to Daniel Herring)
2336 ** Install location can be specified to make.sh using command-line
2337 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
2338 * optimization: The default implementation of
2339 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
2340 * enhancement: Explicit memory barrier operations are now available for use
2341 by multithreaded code. See documentation for details.
2342 * enhancement: Experimental support for threading on Linux/PPC.
2343 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
2344 * bug fix: EXPT signals an error if first argument is a zero and second
2345 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
2346 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
2347 (lp#576594, thanks to Roman Marynchak)
2348 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
2349 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
2351 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
2352 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
2353 cached, leading to many fewer expensive calls to
2354 COMPUTE-APPLICABLE-METHODS.
2355 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
2356 CLASS argument, search for and call an appropriate optimized ctor function
2358 * bug fix: WRITE always returns the correct value.
2360 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
2361 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
2362 * bug fix: Name conflicts between symbols passed as arguments to a single
2363 call to IMPORT no longer add multiple symbols with the same name to the
2364 package (detectable via DO-SYMBOLS).
2365 * bug fix: support building without the dlshim on darwin x86 and x86-64
2367 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
2369 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
2370 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
2372 * bug fix: linkage-table entries on PPC now no longer overflow their
2373 space allocation (potentially causing crashes if they are written out
2375 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
2376 platforms, preventing the GC from seeing stale pointers on the control
2377 stack in subsequent GCs (which would, and does, break invariants).
2378 * bug fix: 32-bit unicode external formats now work on big-endian systems.
2379 * bug fix: Literal characters with code points greater than about 32767
2380 now work on PPC UNICODE builds.
2381 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
2382 high order bits are explicitly cleared out. In some contrived situations,
2383 this could lead to wrong results in mixed real/complex float arithmetic.
2384 * bug fix: Fix function/macro redefinition warnings when building with
2385 clisp. (lp#576787, thanks to Josh Elsasser)
2386 * new platform: experimental support for ppc/openbsd (thanks to Josh
2388 * bug fix: Floating-point traps now work on ppc/linux.
2390 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
2391 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
2392 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
2393 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
2394 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
2395 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
2396 SB-THREAD:GRAB-MUTEX.
2397 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
2398 contain additional data structures and tools for concurrent programming;
2399 at the moment it contains a lock-free queue, and a lock-free mailbox
2401 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
2402 GET-MUTEX but takes &key rather than &optional parameters. Also added
2403 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
2405 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
2406 SB-THREAD:WAIT-ON-SEMAPHORE.
2407 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
2409 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
2410 conditions to defer the deadline for forever.
2411 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
2413 * enhancement: errors from NO-APPLICABLE-METHOD and
2414 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
2415 generic function call.
2416 * enhancement: SB-BSD-SOCKET improvements
2417 ** sockets and socket streams now have a more informative printed
2418 representation based on the corresponding SOCKET-NAME and
2420 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
2422 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
2423 CL:CLOSE when appropriate, and no longer disassociates the stream
2424 from the socket if close failed. (lp#543951)
2425 * improvements to the instrumenting profiler
2426 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
2427 ** optimization: counters no longer use locks for the overflow mode.
2428 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
2429 incurred an off-by-one miscount.
2430 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
2431 * enhancement: improved DEFMETHOD pretty-printing.
2432 * enhancement: perform range reduction when arguments are too large for
2433 x87's transcendentals (instead of returning 0). (lp#327192)
2434 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
2435 some of CL-PPCRE's macros. (lp#570079)
2436 * enhancement: our machine code is slightly less hostile to valgrind on
2438 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
2439 to Robert Swindells and Aleksej Saushev)
2440 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
2441 * bug fix: a rare case of startup-time page table corruption.
2442 * bug fix: a semaphore with multiple waiters and some of them unwinding due
2443 to timeouts could be left in an inconsistent state.
2444 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
2445 * bug fix: misoptimization of multiplication by one in
2446 (SB-C::FLOAT-ACCURACY 0) policies.
2447 * bug fix: miscounts in SB-PROFILE.
2448 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
2449 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
2450 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
2451 up itself" (March 2010) for further details.
2452 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
2453 against length of the list if the element is found before the specified
2454 END is reached. (thanks to Alec Berryman, lp#554385)
2455 * bug fix: errors signalled during package graph modification no longer
2456 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
2457 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
2458 :SB-DOC feature. (lp#552564)
2459 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
2460 * bug fix: more robust runtime executable path detection. (lp#375549)
2461 * bug fix: GCD always returns positive values. (lp#413680)
2462 * bug fix: Converting division to multiplication by reciprocal handles
2464 * bug fix: We were too eager in eliding range reduction tests on x87.
2465 The maximal magnitude is 2^63, not 2^64.
2466 * bug fix: Transforms for TRUNCATE don't die when the result is completely
2468 * bug fix: Maybe restore buildability on Alpha.
2469 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
2471 * bug fix: RANDOM-STATE can be printed readably again.
2472 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
2473 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
2474 types) could result in type mismatches during compilation.
2476 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
2477 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
2478 stack frame thrown from.
2479 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
2480 compiler optimization qualities inside dynamic extent of its body.
2481 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
2482 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
2484 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
2485 constraint propgation, allowing better compilation eg. when used to
2486 access structures with WITH-SLOTS. (lp#520366)
2487 * optimization: the compiler is now more aware of the type of the underlying
2488 storage vector for multidimensional simple arrays resulting in better code
2489 for accessing such arrays.
2490 * optimization: passing NIL as the environment argument to TYPEP no longer
2491 inhibits optimizing it. (lp#309788)
2492 * optimization: more efficient register usage when handling single-float
2493 arguments on x86-64. (thanks to Lutz Euler)
2494 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
2495 pre-allocated temporary vectors. (lp#496249)
2496 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
2497 in :INITIAL-CONTENTS. (lp#523612)
2498 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
2499 functions. (lp#524707)
2500 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
2501 WITH-SLOTS usages during compilation.
2502 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
2503 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
2504 all x86oid platforms with :UD2-BREAKPOINTS target feature.
2505 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
2506 instruction (tested on x86oid linux with ud2-breakpoints).
2507 * bug fix: slam.sh now works on win32.
2508 * bug fix: better differences of numeric types. (lp#309124)
2509 * bug fix: arrays declared intersection and union types can have their
2510 upgraded element type derived. (lp#316078)
2511 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
2512 threads started during profiling. (lp#472499)
2513 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
2515 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
2516 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
2517 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
2518 values instead of signaling an error. (lp#309093)
2519 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
2521 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
2522 declarations (lp#497321)
2523 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
2524 and failed to detect circular lists (lp#452008)
2525 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
2527 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
2528 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
2529 due to it, so that handlers can run.
2530 * bug fix: reparsing undefined types if they have become defined since
2531 parsing. (lp#309128)
2532 * bug fix: missing &REST type in a proclamation for a function with both
2533 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
2534 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
2535 expanded calls (lp#542174)
2536 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
2537 than just at toplevel form.
2539 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
2540 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
2541 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
2542 but work on type specifiers.
2543 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
2544 to name a type specifier.
2545 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
2546 specifier is valid where "valid" basically means "would be accepted as
2547 second argument of TYPEP".
2548 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
2549 returns the function's declared, or derived FTYPE.
2550 * new feature: SB-POSIX now supports accessing the d_ino member of
2551 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
2552 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
2553 provide for seeding a RANDOM-STATE object with user-provided data or
2554 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
2555 attempt to initialize the returned state from the operating system's
2556 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
2557 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
2558 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
2559 * bug fix: Fix grammar and style issues for the docstrings of
2560 printer-related variables and functions. (Thanks to mon_key; launchpad
2562 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
2564 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
2565 in a row even though a handler defered the deadline long into the
2567 * bug fix: A deadline handler was run without interrupts enabled for a
2568 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
2569 in infinitely spinning, non-killable threads.
2570 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
2571 before reaching the erring stack frame.
2572 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
2573 real power. (launchpad bug lp#525949)
2574 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
2575 GENCGC platforms. (launchpad bug lp#529014)
2576 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
2577 (launchpad bug lp#525916)
2578 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
2579 (Thanks to Robert Goldman)
2581 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
2582 * optimization: ROUND with a single single-float or double-float argument
2583 is properly inlined when possible.
2584 * optimization: Slightly better code is generated for integer<->float
2585 conversions and for single-float<->double-float conversions on x86-64.
2586 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
2587 code for 32-bit and 64-bit rotations on x86-64.
2588 * bug fix: The install script changes the ownership of directories as well
2589 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
2590 launchpad bug lp#508485)
2591 * bug fix: TRUNCATE with a single single-float or double-float argument is
2592 properly inlined when possible. (launchpad bug lp#489388)
2593 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
2594 no longer causes a compiler error on x86 and ppc.
2595 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
2596 always relative to *READTABLE* rather than the passed argument.
2598 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
2599 * minor incompatible change: threading support is now enabled by default
2601 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
2603 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
2604 are now caught and reported just like errors during macroexpansion.
2605 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
2606 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
2607 * enhancement: ASDF systems can now depends on SB-QUEUE.
2608 * fixes and improvements related to Unicode and external formats:
2609 ** bug fix: error handling and restart usage in the ucs-2 external format
2611 ** there is now an implementation of the ucs-4 external format.
2612 ** the utf-16 and utf-32 external formats are supported.
2613 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
2614 in the environment. setenv() and unsetenv() are also provided. (reported by
2615 Fare Rideau; launchpad bug lp#460455)
2616 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
2617 loading. This ensures sensible errors for .FASL files from other
2618 implementations on case-insensitive filesystems. (reported by Willem
2619 Broekema; launchpad bug lp#489417)
2620 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
2621 Willem Broekema; launchpad bug lp#489698).
2622 * bug fix: some minor code rearrangements to reenable warning-free building
2623 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
2624 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
2626 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
2629 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
2630 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
2631 * improvement: support O_LARGEFILE access to files larger than 2GB on
2632 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
2633 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
2634 definitions for methods specializing on the passed class itself.
2635 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
2636 definitions for methods specializing on the passed class itself, or on
2638 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
2639 about itself during the build (e.g. for M-? in Slime), if this flag is
2640 enabled in customize-target-features.lisp. This will increase the core
2641 size by about 5-6mb, though, so it's mostly interesting to SBCL
2643 * new feature: various GENCGC tuning parameters have been experimentally
2644 documented and exported from SB-EXT. See documentation for details.
2645 * fixes and improvements related to Unicode and external formats:
2646 ** the Unicode character database has been upgraded to the
2647 Unicode 5.2 standard, giving names and properties to a number of new
2648 characters, and providing a few extra characters with case
2650 ** improvement: restarts for providing replacement input/output on coding
2651 errors for fd-stream external formats.
2652 ** improvement: where :<encoding> is a keyword corresponding to an
2653 external format the system supports, it is now possible to specify
2654 (:<encoding> :replacement <character>) as an external format which will
2655 automatically substitute <character> on encoding or decoding errors for
2656 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
2658 ** improvement: the file streams underlying the standard streams (such as
2659 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
2660 which uses the replacement mechanism to handle encoding errors,
2661 preventing various infinite error chains and unrecoverable I/O
2663 ** minor incompatible change: the utf-8 external format now correctly
2664 refuses to encode Lisp characters in the surrogate range (char-codes
2665 between #xd800 and #xdfff).
2666 ** fix a typo preventing conversion of strings into octet vectors
2667 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
2669 ** fix a bug in the octet multibyte handling of decoding errors and the
2670 USE-VALUE restart. (launchpad bug lp#314939)
2671 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
2672 restart on fd-stream decoding errors.
2673 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
2674 error is near the end of file.
2675 ** fix a double-error case in unibyte octet conversions, when the first
2676 use of USE-VALUE is ignored.
2677 ** fix bugs in handling of undefined code points in unibyte encodings.
2678 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
2679 streams after an UNREAD-CHAR.
2680 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
2681 object is allocated in a boxed region of dynamic space.
2682 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
2683 fork with multiple Lisp threads running is made, instead of going
2684 ahead with unpredictable consequences. (reported by Leslie Polzer)
2685 * bug fix: uses of slot accessors on specialized method parameters within
2686 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
2687 error while finalizing the class. This fix may cause classes with slot
2688 accessors to be finalized later than previously. (reported by Lars Rune
2689 Nøstdal; launchpad bug lp#473699)
2690 * bug fix: restore buildability on the MIPS platform. (regression from
2691 1.0.30.38, reported by Samium Gromoff)
2692 * bug fix: inspecting closures is less likely to fail with a type error.
2693 * bug fix: no timer starvation when setting the system clock back.
2694 (launchpad bug lp#460283)
2695 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
2696 standard pprint dispatch table as specified by CLHS.
2697 * bug fix: give CLISP a hint about a type declaration to enable it to build
2698 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
2700 * bug fix: correctly dump literal objects in defaulting forms of arglists.
2701 (reported by Attila Lendvai; launchpad bug lp#310132)
2702 * bug fix: distinguish in type specifiers between arrays that might be
2703 complex and arrays that are definitely complex. (launchpad bug lp#309129)
2704 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
2705 type. (reported by Levente Mészáros; launchpad bug lp#485972)
2706 * bug fix: setting the value of a symbol-macro within a method in the
2707 presence of type declarations works properly again. (reported by Iban
2708 Hatchondo; launchpad bug lp#485019)
2710 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
2711 * optimization: faster FIND and POSITION on strings of unknown element type
2712 in high SPEED policies. (thanks to Karol Swietlicki)
2713 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
2715 * improvement: better error signalling for bogus parameter specializer names
2716 in DEFMETHOD forms (reported by Pluijzer)
2717 * bug fix: DELETE-FILE once again works on logical pathnames (regression
2719 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
2721 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
2722 removes previous default initargs (reported by Lars Rune Nøstdal and
2724 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
2725 lambda-lists. (reported by Peter Seibel)
2726 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
2727 correctly when starting from an executable core without saved runtime
2728 options (reported by Faré Rideau, thanks to Zach Beane)
2729 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
2730 an optimization note instead. (reported by Martin Cracauer)
2731 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
2732 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
2733 new process group if it doesn't need to share stdin with the sbcl
2734 process. (thanks to Leslie Polzer)
2735 * bug fix: SATISFIES could be misoptimized to refer to a local function.
2736 (reported by Stanislaw Halik)
2738 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
2739 * improvement: stack allocation is should now be possible in all nested
2740 inlining cases: failure to stack allocate when equivalent code is manually
2741 open coded is now considered a bug.
2742 * improvements related to Unicode:
2743 ** the Unicode character database has been upgraded to the
2744 Unicode 5.1 standard, giving names and properties to a number of new
2745 characters, and providing a few extra characters with case
2747 ** the system now recognizes and produces names for Unicode Hangul
2748 syllable characters.
2749 ** the EBCDIC-US external-format is now supported for octet operations
2750 (as well as for stream operations).
2751 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
2752 be used to output toplevel compile-time effects into a separate .CFASL
2754 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
2755 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
2757 * optimization: TRUNCATE on known single- and double-floats is upto 25%
2759 * optimization: division of floating point numbers by constants uses
2760 multiplication by reciprocal when an exact reciprocal exists.
2761 * optimization: multiplication of single- and double-floats floats by
2762 constant two has been optimized.
2763 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
2764 sufficient type information is available. (thanks to Leslie Polzer)
2765 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
2766 known structure objects are as efficient as defstruct generated accessors.
2767 * optimization: unused vector creation can now be optimized away.
2768 * improvement: ASDF systems can now depends on SB-INTROSPECT.
2769 * improvement: a STYLE-WARNING is signalled when a generic function
2770 clobbers an earlier FTYPE proclamation.
2771 * improvement: the compiler is able to track the effective type of
2772 generic function across method addition and removal even in the
2773 absence of an explicit DEFGENERIC.
2774 * improvement: DESCRIBE now reports on symbols naming undefined
2775 but assumed or declared function as well.
2776 * improvement: recompilation of systems using SB-GROVEL now works
2777 (thanks to Leslie Polzer)
2778 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
2779 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
2781 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
2782 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
2783 well as user defined declaration names.
2784 ** VARIABLE-INFORMATION is now aware of alien variables.
2785 * improvement: improved address space layout on OpenBSD (thanks to Josh
2787 * improvement: pretty-printing of various Lisp forms has been improved
2788 (thanks to Tobias Rittweiler)
2789 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
2790 unused were deleted in safe code. (reported by John Fremlin)
2791 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
2793 * bug fix: some out-of-line array predicates were missing (reported by
2795 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
2797 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
2798 (thanks to Larry D'Anna)
2799 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
2800 as well. (reported by Josh Elsasser)
2801 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
2802 leading to possible attempts to delete the same file twice. See docstring
2803 on DELETE-FILE for details. (reported by John Fremlin)
2804 * bug fix: DELETE-FILE once again deletes the file named by the pathname
2805 designator argument, rather than its truename. (reported by Luis
2807 * bug fix: the low-level debugger had 32-bit assumptions and was missing
2808 information about some array types. (thanks to Luis Oliveira)
2809 * bug fix: moderately complex combinations of inline expansions could
2810 be miscompiled if the result was declared to be dynamic extent.
2811 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
2812 form (+ <variable> <integer>) were miscompiled under certain
2814 * bug fix: in some cases no compiler note about failure to stack allocate
2815 was emitted, even if the objects were in fact heap allocated.
2816 * bug fix: minor violation of "otherwise inaccessible" rule for stack
2817 allocation could cause objects users might reasonably expect to
2818 be heap allocated to be stack allocated.
2819 * bug fix: DESCRIBE signalled an error for generic functions under
2820 certain circumstances. (thanks to Leslie Polzer)
2821 * bug fix: Fixed spelling of an error message.
2823 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
2824 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
2825 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
2826 of SB-THREAD:THREAD-ERROR-THREAD.
2827 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
2828 * new feature: docstrings for local and anonymous functions are no longer
2829 discarded. (thanks to Leslie Polzer)
2830 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
2831 values in other threads.
2832 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
2833 about object allocation.
2834 * optimization: division of a real float by a complex float is implemented
2835 with a specialised code sequence.
2836 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2837 keywords is an order of magnitude faster.
2838 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2839 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2840 methods, and similarly for non-standard metaclass classes as long as there
2841 are no methods additional on MAKE-INSTANCE.
2842 * optimization: more efficient type-checks for FIXNUMs when the value
2843 is known to be a signed word on x86 and x86-64.
2844 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2845 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2847 * optimization: compiler is smarter about delegating argument type checks to
2849 * optimization: several character functions are now compiled somewhat more
2850 efficiently. (reported by Lynn Quam)
2851 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2852 * improvement: less unsafe constant folding in floating point arithmetic,
2853 especially for mixed complex/real -float operations.
2854 * optimization: constant double and single floats are stored in native
2855 unboxed format on x86[-64].
2856 * optimization: smarter code for arithmetic operations with constant floats,
2857 complex floats, or integers on x86[-64].
2858 * optimization: smarter code for conjugate/multiplication of float complexes
2859 and abs/negate of floats on x86-64.
2860 * optimization: more efficient complex float and real float operations on
2862 * improvement: complex float division is slightly more stable.
2863 * improvement: DESCRIBE output has been reworked to be easier to read and
2864 contains more pertinent information.
2865 * improvement: failure to provide requested stack allocation compiler notes
2866 provided in all cases (requested stack allocation not happening without a
2867 note being issued is now considered a bug.)
2868 * bug fix: SB-POSIX exports the documented types and functions
2869 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2870 types. (reported by "abhi")
2871 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2872 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2873 (thanks to Paul Khuong)
2874 * bug fix: looping around HANDLER-CASE could silently consume stack space
2875 on each iteration. (reported by "foobar")
2876 * bug fix: better error signalling when calls to functions seeking elements
2877 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2878 (reported by Tobias Rittweiler)
2879 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2880 directory components now works as it used to. (various prolems reported by
2881 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2882 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2883 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2884 * bug fix: bogus undefined variable warnings from fopcompiled references to
2885 global variables. (thanks to Lars Rune Nøstdal)
2886 * bug fix: foreign function names should now appear in backtraces on
2887 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2888 * bug fix: SETF compiler macro documentation strings are not discarded
2890 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2891 (thanks to Alex Plotnick)
2892 * bug fix: SLEEP accepts large integer arguments, truncating them to
2893 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2894 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2895 * bug fix: compiler notes for expensive slot type checks could be emitted
2896 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2898 changes in sbcl-1.0.29 relative to 1.0.28:
2899 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2900 https://bugs.launchpad.net/sbcl
2901 Bugs can be reported directly there, or by sending email to
2902 sbcl-bugs@lists.sourceforge.net
2903 (no subscription required.)
2904 * minor incompatible change: under weak type checking policy integer
2905 types are weakened less aggressively.
2906 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2907 allowed to return, which causes SBCL to quit with exit status 0. Previously
2908 if the function returned with a small integer return value, that value
2909 was accidentally reused as the exit status.
2910 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2911 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2912 :HASH-FUNCTION argument. Refer to user manual for details.
2913 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2915 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2916 microseconds since the Unix epoch on all platforms.
2917 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2918 allows the compiler to safely elide boundedness checks for special
2920 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2921 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2922 efficiency measure for threaded platforms, but also valueable in
2924 * new feature: UNC pathnames are now understood by the system on Windows.
2925 * optimization: the compiler uses a specialized version of FILL when the
2926 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2928 * optimization: accesses to potentially non-simple arrays where element type
2929 is known are 50% faster.
2930 * optimization: compiler now generates faster array typechecking code.
2931 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2933 * optimization: multidimensional array accesses in the absence of type
2934 information regarding array rank are approximately 10% faster due to
2935 open coding of ARRAY-RANK.
2936 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2937 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2939 * optimization: result of call to VECTOR can now be stack allocated.
2940 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2941 as long as the resulting array is one-dimensional and has a known
2942 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2943 length of the list matches the known length of the vector does not
2944 allocate the list as an intermediate step. Ditto for VECTOR and simple
2946 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2947 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2948 known element type, and is known to be simple and one dimensional.
2949 * improvement: SBCL now emits a compiler note where stack allocation was
2950 requested but could not be provided (not in all cases, unfortunately)
2951 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2952 * improvement: pretty-printing loop has been implemented properly. (thanks
2953 to Tobias Rittweiler)
2954 * documentation: CLOS slot typechecing policy has been documented.
2955 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2956 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2957 pointer, leading to memory faults. (thanks to Bart Botta)
2958 * bug fix: better floating point exception handling on x86/OpenBSD.
2959 (thanks to Josh Elsasser)
2960 * bug fix: exit status from QUIT when called under --script was lost
2961 (reported by Hubert Kauker)
2962 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2963 same implementation of FILL to initialize the array, even if a more
2964 efficient one was available (reported by Stas Boukarev, thanks to
2966 * bug fix: potential miscompilation of array stack allocation on x86 and
2967 x86-64. (reported by Time Tossavainen)
2968 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2969 result in their subforms being treated as top level forms. (reported by
2971 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2972 than a machine register could leave garbage in the high bits of the
2973 result register (bug 316325).
2974 * bug fix: disable address space randomization Linux/x86-64 as well,
2975 not just x86-64. (reported by Ken Olum)
2976 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2977 generate incorrect code.
2978 * bug fix: #201; type inference for CONS and ARRAY types could derive
2979 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2980 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2981 could not be assigned to or bound with PROGV. (reported by Lorenz
2983 * bug fix: the value of CL:- in the inspector was the previous expression
2984 evaluated rather than the expression being evaluated.
2985 * bug fix: constants can no longer be locally declared special.
2986 * bug fix: signals delivered to threads started from foreign land (read:
2987 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2988 thread by blocking all signals and resignalling.
2989 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2990 from :INITFORM, if any.
2992 changes in sbcl-1.0.28 relative to 1.0.27:
2993 * a number of bugs in cross-compilation have been fixed, with the ultimate
2994 result that building under (at least) clisp should be much more reliable.
2995 * minor incompatible changes: echo-streams now propagate unread-char to the
2996 underlying input stream, and no longer permit unreading more than one
2998 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2999 frames, allowing for instance more reliable backtraces.
3000 * improvement: the debugger REPL can now reference lexical variables
3001 by name directly for code compiled with (DEBUG 3).
3002 * improvement: errors from malformed declarations now have better source
3003 paths associated with them. (thanks to Tobias Rittweiler)
3004 * optimization: faster local calls on x86/x86-64
3005 * bug fix: some error messages for out-of-bound array indexes confused the
3006 index and the bound. (thanks to Stas Boukarev)
3007 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
3009 * bug fix: running regressions tests in shells without OSTYPE set now works.
3010 (reported by Harald Hanche-Olsen)
3011 * bug fix: more robust static space exhaustion signalling from
3012 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
3013 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
3014 docstring away instead of storing it under names such as (LAMBDA (X)).
3015 (reported by Leslie Polzer)
3016 * bug fix: timers could go off in the wrong order, be delayed indefinitely
3017 (thanks to Ole Arndt for the patch)
3018 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
3019 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
3020 potentially-invalid effective methods in its cache.
3021 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
3022 instances as well (thanks to Paul Khuong)
3023 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
3024 SB-POSIX:WAITPID and their C equivalents.
3025 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
3027 changes in sbcl-1.0.27 relative to 1.0.26:
3028 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
3029 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
3030 * improvement: the system either recovers from stack exhaustion or dies
3031 properly as opposed to leaving the user uncertain of whether the handler
3032 trampled on some random memory next to the stack or having to rely on
3033 --lose-on-corruption (which is still a good idea to use in production
3034 because stack exhaustion can happen in signal handlers which will likely
3036 * bug fix: fix gc related interrupt handling bug on ppc (regression from
3037 1.0.25.37, reported by Harald Hanche-Olsen)
3038 * bug fix: work around signal delivery bug in darwin (regression from
3039 1.0.25.44, reported by Sidney Markowitz)
3040 * bug fix: fix ERROR leaking memory (reported by David Thompson)
3042 changes in sbcl-1.0.26 relative to 1.0.25:
3043 * incompatible change: an interruption (be it a function passed to
3044 INTERRUPT-THREAD or a timer function) runs in an environment where
3045 interrupts can be enabled. The interruption can use
3046 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
3047 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
3048 potentially running out of stack. Keep in mind that in the absence
3049 of WITHOUT-INTERRUPTS some potentially blocking operation such as
3050 acquiring a lock can enable interrupts.
3051 * incompatible change: GC-OFF and GC-ON are removed, as they were
3052 always unsafe. Use WITHOUT-GCING instead.
3053 * new feature: runtime option --disable-ldb
3054 * new feature: runtime option --lose-on-corruption to die at the
3055 slightest hint of possibly non-recoverable errors: running out of
3056 memory, stack, alien stack, binding stack, encountering a memory
3057 fault, etc. In the absence of --lose-on-corruption a warning is
3059 * enhancement: detect binding stack exhaustion
3060 * enhancement: detect alien stack exhaustion on x86/x86-64
3061 * improvement: generally more stable and reliable interrupt handling
3062 * improvement: there is a per thread interruption queue,
3063 interruptions are executed in order of arrival
3064 * improvement: a repeating timer reschedules itself when the it has
3065 finished, but expiration times are spaced equally. If an
3066 expiration time is in the past it will trigger after a short grace
3067 period that may give a chance to other things to run.
3068 * optimization: slightly faster gc on multithreaded builds
3069 * optimization: faster WITHOUT-GCING
3070 * bug fix: when JOIN-THREAD signals an error, do it when not holding
3071 important locks so that the debugger/handler doesn't produce
3072 recursive errors or deadlock.
3073 * bug fix: real-time signals are not used anymore, so no more
3074 hanging when the system wide real-time signal queue gets full.
3075 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
3077 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
3078 * bug fix: fix random memory faults related to interrupts on alpha
3079 * bug fix: fix random memory faults related to interrupts on sparc
3080 * bug fix: fix deadlocks related to starting threads
3081 * bug fix: fix deadlines on locks on futex platforms
3082 * bug fix: restore errno in signal handlers
3083 * bug fix: fix deadlocks related to hash tables
3084 * bug fix: fix deadlocks in pcl
3086 changes in sbcl-1.0.25 relative to 1.0.24:
3087 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
3088 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
3089 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
3090 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
3091 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
3092 better name and does not return values so stale on multiprocessor systems.
3093 Also, HOLDING-MUTEX-P was added for about the only sane usage of
3095 * improvement: unithread builds keep track of MUTEX-VALUE.
3096 * improvement: reading from a TWO-WAY-STREAM does not touch the output
3097 stream anymore making it thread safe to have a concurrent reader and
3098 a writer, for instance, in a pipe.
3099 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
3100 arguments, making compiler-macros for SETF-functions able to inspect
3101 their constant arguments.
3102 * improvement: COMPILE-FILE reports times with millisecond accuracy
3103 (thanks to Luis Oliveira)
3104 * optimization: CHAR-CODE type derivation has been improved, making
3105 TYPEP elimination on subtypes of CHARACTER work better. (reported
3106 by Tobias Rittweiler, patch by Paul Khuong)
3107 * bug fix: setting alien structure fields of type struct by value now
3108 computes the right offset for the memory copy.
3109 * bug fix: compilation problem involving inlined calls to aliens with
3110 result type VOID. (reported by Ken Olum)
3111 * bug fix: #235a; sequential inline expasion in different policies no
3112 longer reuses the functional from the previous expansion site.
3113 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
3114 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
3115 * bug fix: named ENUMs in multiply-referenced alien record types no longer
3116 cause an implied type redefinition. Regression from 1.0.21.29.
3117 * bug fix: sign-extension of small signed return values now works with C
3118 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
3119 * improvements to the Windows port:
3120 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
3121 Westfold, thanks to Rudi Schlatte)
3123 changes in sbcl-1.0.24 relative to 1.0.23:
3124 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
3125 vector of a multidimensional SIMPLE-ARRAY.
3126 * new feature: the system now signals a continuable error if standard
3127 readtable modification is attempted. (thanks to Tobias Rittweiler)
3128 * new feature: DIRECTORY has been extended with a non-standard keyword
3129 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
3130 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
3131 has been robustified and documented better. (thanks to Robert Goldman)
3132 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
3133 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
3134 * tradeoff: constant FORMAT control strings are now compiled unless
3135 SPACE > SPEED (previously only when SPEED > SPACE.)
3136 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
3138 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
3140 * bug fix: lexical type declarations are now correctly reported by
3141 SB-CLTL2. (reported by Larry D'Anna)
3142 * bug fix: STRING-TO-OCTETS did not handle :START properly when
3143 using UTF-8 as external format. (thanks to Luis Oliveira)
3144 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
3145 are signalled correctly. (thanks to Stas Boukarev)
3146 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
3147 designator. (thanks to Tobias Rittweiler)
3148 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
3149 designator, and returns T instead of the function. (thanks to
3151 * bug fix: direct superclasses of STANDARD-CLASS and
3152 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
3153 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
3154 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
3155 when no class with the named slot yet exists no longer causes a
3156 compile-time style-warning.
3157 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
3158 in safe code. (reported by Didier Verna)
3159 * bug fix: #430; nested structure constructors can stack allocate.
3160 * bug fix: on some 64-bit platforms dynamic space size was truncated
3161 to #xffff0000 bytes. (reported by Benjamin Lambert)
3162 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
3163 REPL unusable. (reported by Daniel Herring)
3164 * bug fix: return values of READ-SEQUENCE did not take :START into
3165 account on file streams, regressions since 1.0.12.22. (reported by
3166 Thomas Russ, patch by Paul Khuong)
3167 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
3168 method specializer used to confuse permuation vector optimization.
3169 * bug fix: system inserted bogus implicit type declarations for local
3170 special variables in DEFMETHOD bodies.
3171 * bug fix: #354; duplicated frames in backtraces due to
3172 non-tail-call-optimized XEPs to functions with return type NIL
3174 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
3175 initializes structure object slots according to DEFSTRUCT initforms,
3176 and DEFSTRUCT forms :INCLUDEind structure classes defined using
3177 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
3178 (reported by Bruno Haible and Stephen Wilson)
3179 * bug fix: #395; fill-pointer output streams used now support
3180 element-type BASE-CHAR as well.
3181 * bug fix: compiler error when attempting to derive return value of
3182 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
3184 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
3186 * bug fix: Mac OS X binaries should now be portable between Leopard
3189 changes in sbcl-1.0.23 relative to 1.0.22:
3190 * enhancement: when disassembling method functions, disassembly
3191 for the associated fast function is also produced.
3192 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
3194 * optimization: printing with *PRINT-PRETTY* true is now more
3195 efficient as long as the object being printed doesn't require
3196 special handling by the pretty printer.
3197 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
3198 now interact correctly with type declarations.
3199 * partial bug fix: PCL detects infinite recursion during wrapper
3200 validation. (thanks to Attila Lendvai)
3201 * bug fix: #426; nested function calls are inlined properly.
3202 Previously if FOO was an inline function, in calls of the form
3203 (FOO (FOO ...)) the outer call was not inlined.
3204 * bug fix: long long arguments passed in registers to alien
3205 functions on PowerPC Linux and NetBSD are now handled correctly
3206 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
3208 changes in sbcl-1.0.22 relative to 1.0.21:
3209 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
3210 for the shared object in the current directory, but passes the native
3211 namestring of the designated pathname to the operation system's shared
3212 object loading function as-it.
3213 * minor incompatible change: --disable-debugger toplevel option now takes
3214 effect before processing of initialization files and --eval or --load
3216 * new feature: new commandline argument: --script, which supports
3217 shebang lines. See documentation for details. (based on work by
3219 * new feature: SAVE-LISP-AND-DIE can save current values of
3220 --dynamic-space-size and --control-stack-size in the executable core,
3221 causing it to skip normal runtime option processing. See documentation
3222 for details. (thanks to Zach Beane)
3223 * enhancement: inoccous calls to EVAL or generic functions dispatching
3224 on subclasses of eg. STREAM no longer cause compiler notes to appear.
3225 * enhancement: the system no longer resignals errors from --load and
3226 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
3227 associated with the original error to be lost. (thanks to Ariel
3229 * enhancement: :DONT-SAVE keyword argument has been added to
3230 LOAD-SHARED-OBJECT for controlling interaction with
3231 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
3232 the effects of an earlier LOAD-SHARED-OBJECT call.
3233 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
3234 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
3235 provided. (reported by Cedric St-Jean)
3236 * bug fix: circularity handling in the reader did not treat raw
3237 structure slots correctly. (reported by Cedric St-Jean)
3238 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
3239 file descriptors when there were none.
3240 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
3241 was broken. (reporteed by Willem Broekema)
3242 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
3243 pathnames without a directory.
3244 * bug fix: COMPILE-FILE did not warn about undefined variable
3245 references at toplevel, and LOAD of the resulting fasl did
3246 not signal an error.
3247 * bug fix: functions with non-required arguments used to end up with
3248 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
3249 * bug fix: redefining a function with non-required arguments didn't
3250 update the system's knowledge about its call signature properly.
3251 * bug fix: fixed #431; incompatible alien record type redefinitions
3252 are detected and handled. (reported by Neil Haven)
3253 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
3254 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
3256 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
3257 after alien stack frames.
3258 * bug fix: strings passed to mk{s,d}temp lacked null termination
3260 changes in sbcl-1.0.21 relative to 1.0.20:
3261 * new feature: the compiler is able to track the effective type of a
3262 generic function across method addition and removal.
3263 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
3264 appropriately typed structure slots without locking.
3265 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
3266 information like those gathered by TIME using a programming-friendly
3268 * new feature: TIME reports time taken even if the form performs a
3269 non-local transfer of control.
3270 * enhancement: reduced conservativism on GENCGC platforms: on
3271 average 45% less pages pinned (measured from SBCL self build).
3272 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
3273 mutate constant symbols or violate declaimed type of the symbol.
3274 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
3275 sleeping on the semaphore in heavily contested semaphores.
3276 * bug fix: semaphores and condition variables were not interrupt
3278 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
3279 owned by other threads anymore.
3280 * bug fix: FIND on lists called KEY outside the specified
3281 subsequence. (reported by budden)
3282 * bug fix: LOG doesn't use single-float intermediate results when
3283 given mixed integer and double-float arguments, leading to better
3284 precision. (reported by Bob Felts)
3285 * bug fix: LOG with base zero returned values of inconsistent type.
3287 changes in sbcl-1.0.20 relative to 1.0.19:
3288 * minor incompatible change: OPTIMIZE qualities
3289 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
3290 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
3291 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
3292 * documentation: some slot access efficiency guidelines have been
3293 added to the user manual.
3294 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
3295 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
3296 as ASSOC and MEMEBER.
3297 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
3298 to more efficient EQ-comparison versions more often.
3299 * optimization: enhanced derivation of DOLIST iteration variable type
3301 * optimization: constant folding of simple (LIST ...) forms as DOLIST
3303 * optimization: runtime lookup of function definitions can be
3304 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
3305 * optimization: compiler is able to derive the return type of
3306 (AREF (THE STRING X) Y) as being CHARACTER.
3307 * optimization: CLRHASH on empty hash-tables no longer does pointless
3308 work. (thanks to Alec Berryman)
3309 * optimization: REPLACE deftransforms don't punt when :START1 or
3311 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
3312 no longer emits a code deletion note. (reported by Andrew
3314 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
3315 functions with an odd number of &OPTIONAL arguments, a &REST
3316 argument, and one or more &KEY arguments at the call site.
3317 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
3318 arguments appeared at call sites as well.
3319 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
3320 READ-LINE &co can no longer read from them afterwards. (reported
3322 * bug fix: fixed #427: unused local aliens no longer cause compiler
3323 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
3325 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
3326 alien-stack leakage. (reported by Andy Hefner)
3327 * bug fix: PROGV signals an error when an attempt to violate declared
3328 type of a variable or bind a constant is made.
3329 * bug fix: SET signals an error when an attempt to violate declared
3330 type of a variable is made.
3331 * bug fix: restart computation during the execution of a restart
3332 test function no longer causes infinite recursion. (reported by
3334 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
3335 signals an error. (thanks to Pierre Mai)
3336 * bug fix: EXPORT left symbol unexported in conflict situations.
3337 (thanks to Michael Weber)
3338 * bug fix: correctly handle name conflicts involving CL:NIL.
3339 (thanks to Michael Weber)
3340 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
3341 conflicts arising from USEing package with conflicting symbols
3342 correctly. (thanks to Michael Weber)
3344 changes in sbcl-1.0.19 relative to 1.0.18:
3345 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
3346 warnings that go otherwise unhandled will be muffled if they are
3347 of the type that's the value of this variable.
3348 * optimization: stack allocation is slightly more efficient on x86
3350 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
3351 where a raw slot always is initialized using the initform whose
3352 type is not know sufficiently well a compile-time are now compiled
3353 correctly. (reported by John Morrison)
3354 * bug fix: compiler no longer makes erronous assumptions in the
3355 presence of non-foldable SATISFIES types.
3356 * bug fix: stack analysis missed cleanups of dynamic-extent
3357 arguments in non-let-converted calls to local functions.
3358 * improvements to the Windows port:
3359 ** adjusted address spaces for building on both Win32 and
3360 Win64. (thanks for John Connors)
3361 * fixed some bugs revealed by Paul Dietz' test suite:
3362 ** interval arithmetic during type derivation used inexact integer
3363 to single-float coercions.
3364 ** arithmetic operations involving large integers and single
3365 floats give the same results in compiled and interpreted code.
3366 ** deriving the result type of COERCE no longer signals an error
3367 if the derived type of the second argument is a MEMBER type
3368 containing invalid type specifiers.
3369 ** ADJOIN with constant NIL as second argument works correctly.
3370 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
3372 changes in sbcl-1.0.18 relative to 1.0.17:
3373 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
3374 profiles only the current thread.
3375 * minor incompatible change: changes to SYMBOL-VALUE of constants
3376 defined with DEFCONSTANT now signal an error.
3377 * enhancement: SB-SPROF now has support for wallclock profiling,
3378 and is also able to profile specific threads. REPORT output
3379 has also additional sorting options.
3380 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
3382 * optimization: structure allocation has been improved
3383 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
3384 ** out of line constructors are ~10% faster.
3385 ** inline constructors are ~15% faster.
3386 ** inline constructors are capable of dynamic extent allocation
3387 (generally on x86 and x86-64, in some cases on other platforms
3389 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
3391 * optimization: file compiler is now able to coalesce non-circular
3392 lists, non-base strings, and bit-vectors. Additionally, constants
3393 are never referenced through SYMBOL-VALUE at runtime.
3394 * optimization: code defining methods on PRINT-OBJECT (and other
3395 generic functions in the COMMON-LISP package) now loads faster.
3396 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
3398 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
3399 fasl is now deleted. (reported by Attila Lendvai)
3400 * bug fix: READ-LINE always returned NIL for the last line in files.
3401 (reported by Yoshinori Tahara)
3402 * bug fix: more accurate disassembly annotations of foreign function
3403 calls. (thanks to Andy Hefner)
3404 * bug fix: trimming non-simple strings and non-string string
3405 designators when the there is nothing to trim works properly.
3406 (thanks to James Knight)
3407 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
3408 (thanks to Travis Cross)
3409 * fixed some bugs revealed by Paul Dietz' test suite:
3410 ** NIL is a valid function name (regression at 1.0.13.38)
3411 ** FILL on lists was missing its return value (regression at 1.0.12.27)
3412 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3413 fill pointers properly (regression at 1.0.12.23)
3414 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3415 displacement indices properly (regression at 1.0.12.23)
3417 changes in sbcl-1.0.17 relative to 1.0.16:
3418 * temporary regression: user code can no longer allocate closure
3419 variable storage on stack, due to bug 419 without explicitly
3420 requesting it. Please consult sbcl-devel for advice if you need to
3421 use this feature in the meanwhile.
3422 * new feature: runtime argument --control-stack-size can be used to
3423 adjust thread default control stack size.
3424 * enhancement: improved TIME output
3425 ** all times are reported using the measured accuracy (milliseconds
3426 for real and GC times, microseconds for everything else.)
3427 ** processor cycle counts on x86 and x86-64.
3428 ** interpreted forms are counted for both evaluator modes.
3429 ** number of lambdas converted by the compiler is reported.
3430 ** CPU percentage report (computed from real and total run time.)
3431 ** more comprehensive run time reporting, using a condenced format
3432 ** interperted form, lambda, and page fault counts are omitted
3434 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
3436 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
3437 * optimization: two argument forms of LAST are upto ~10% faster
3438 in normal SPEED policies.
3439 * optimization: NCONC no longer needs to heap cons its &REST list
3440 in normal SPEED policies.
3441 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
3442 to Sidney Markowitz)
3443 * bug fix: UNION and NUNION work with :TEST-NOT once more,
3444 regression since 1.0.9.1. (thanks to Eric Marsden)
3445 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
3446 since 1.0.15.36. (thanks to Paul Khuong)
3447 * bug fix: LAST when always returned the whole list when given a bignum
3448 as the second argument.
3449 * bug fix: dynamic extent allocation of nested lists and vectors
3450 could leak to otherwise accessible parts.
3451 * bug fix: invalid optimization of heap-allocated alien variable
3453 * bug fix: fasl header checking is less vulnerable to different
3454 platform word lengths.
3455 * bug fix: more correct assembler syntax for GNU binutils
3456 2.18.50.0.4 support. (thanks to Marijn Schouten)
3457 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
3459 * bug fix: the fopcompiler can handle LOCALLY forms (with no
3460 declarations) successfully. (reported by Attila Lendvai)
3462 changes in sbcl-1.0.16 relative to 1.0.15:
3463 * minor incompatible change: revert the changes to sb-posix's error
3464 signaling added in 1.0.14.
3465 * minor incompatible change: change PROBE-FILE back to returning
3466 NIL whenever we can't get a truename, as was the case before 1.0.14.
3467 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
3468 inherits from ERROR instead of just CONDITION.
3469 * new feature: SB-INTROSPECT can provide source locations for instances
3470 as well. (thanks to Tobias Rittweiler)
3471 * optimization: binding special variables now generates smaller code
3472 on threaded platforms.
3473 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
3474 and cases where no :TEST is given but the compiler can infer that
3475 the element to search is of type (OR FIXNUM (NOT NUMBER)).
3476 * optimization: better LOGNOT on fixnums.
3477 * optimization: modular arithmetic for a particular requested width
3478 is implemented using a tagged representation unless a better
3479 representation is available.
3480 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
3481 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
3482 for wellformedness and returns a specialized vector. (reported by
3483 Francois-Rene Rideau)
3484 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
3485 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
3486 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
3487 unscheduling timer at the same time as another timer fires.
3488 * bug fix: don't reschedule timers for dead threads.
3489 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
3490 * bug fix: copying output from RUN-PROGRAM to a stream signalled
3491 bogus errors if select() was interrupted.
3492 * enhancement: add support for fcntl's struct flock to SB-POSIX.
3494 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
3495 * enhancement: cleaner backtraces for interactive interrupts, as
3496 well as other cases where the interesting frames used to be
3497 obscured by interrupt handling frames.
3498 * enhancement: untracing a whole package using (UNTRACE "FOO") is
3499 now supported, and tracing a whole package using (TRACE "FOO") now
3500 traces SETF-functions as well.
3501 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
3502 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
3503 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
3504 * unreadably printed representation of hash-tables now includes
3506 * bug fix: partially fixed #188: type propagation from assignments
3507 is now more efficient.
3508 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
3509 'DOUBLE-FLOAT) are not flushable.
3510 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
3511 full address of the object, and none of the tag bits.
3512 * bug fix: readably printing hash-tables now respects other printer
3513 control variables. (reported by Cedric St-Jean)
3514 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
3515 keyword with MAKE-HASH-TABLE.
3516 * bug fix: export SB-POSIX:MKSTEMP.
3517 * bug fix: SORT was not interrupt safe.
3518 * bug fix: XREF accounts for the last node of each basic-block as
3520 * bug fix: MAKE-INSTANCE optimizations interacted badly with
3521 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
3522 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
3523 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
3524 create obsolete instances in the case of redefinition or
3525 obsoletion of a superclass. (thanks to Andy Hefner)
3526 * bug fix: Support for the Alpha architecture has been revived; it had
3527 suffered somewhat from lack of maintenance since sbcl-1.0.
3528 * improvements to the Windows port:
3529 ** The system detects the codepage to use at startup, instead of
3530 using the value from the saved core. (thanks to Kei Suzuki)
3532 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
3533 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
3534 (see documentation for details.)
3535 * revived support for OpenBSD (contributed by Josh Elsasser)
3536 * partially fixed bug #108: ROOM no longer suffers from occasional
3537 (AVER (SAP= CURRENT END)) failures.
3538 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
3539 bodies no longer cause a WARNING to be signalled. (reported by
3541 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
3542 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
3543 the bug in TRUNCATE.) (reported by Michael Weber)
3544 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
3545 no samples. (reported by Andy Hefner)
3546 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
3547 no longer appear as (NIL ...) frames in backtraces.
3548 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
3549 is now actually exported from SB-EXT as documented. (reported by
3551 * bug fix: sb-aclrepl now correctly understands how to inspect
3552 single-floats on 64-bit platforms where single-floats are not boxed.
3553 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
3554 yet been finalized. (reported by Levente Meszaros)
3555 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
3556 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
3557 SBCL-specific optimize qualities.
3559 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
3560 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
3561 an executable in the search path, and does so in the child
3562 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
3563 been removed; it can be found in the CVS history, for somebody who
3564 needs that search behavior (see the manual).
3565 * minor incompatible change: compiler policy re. weakening type
3566 checks has changed: now type checks are weakened only if SAFETY < 2
3568 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
3569 unparsing of directory pathnames as files. Analogously,
3570 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
3571 filename to parse into a directory pathname.
3572 * enhancement: implicit generic function creation now signals a
3573 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
3574 users can bind handlers for and muffle around calls to LOAD.
3575 * enhancement: RUN-PROGRAM allows unicode arguments and environments
3576 to be used (using the default stream external format), and allows
3577 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
3578 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
3579 strings and vectors whose element-type or simplicity is not fully
3580 known at compile-time.
3581 * optimization: STRING-TRIM and related functions no longer allocate
3582 a new string when no trimming needs to be performed. These functions
3583 are also faster than before when the input string has been declared
3585 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
3586 * optimization: READ-LINE is significantly faster for files containing
3588 * optimization: non-open coded uses of character comparison operators
3589 (e.g. char=) no longer cons when called with more than one parameter
3590 on platforms supporting dynamic-extent allocation.
3591 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
3592 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
3593 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
3595 * bug fix: some sequence functions elided bounds checking when
3597 * bug fix: too liberal weakening of union-type checks when SPEED >
3599 * bug fix: more bogus fixnum declarations in ROOM implementation
3602 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
3603 * new feature: MAKE-HASH-TABLE now experimentally accepts a
3604 :SYNCHRONIZED argument, which makes the hash-table safe for
3605 concurrent accesses (but not iteration.) See also:
3606 SB-EXT:WITH-LOCKED-HASH-TABLE, and
3607 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
3608 * optimization: CONCATENATE on strings is an order of magnitude faster
3609 in code compiled with (> SPEED SPACE).
3610 * optimization: SUBSEQ is ~50% faster on lists.
3611 * bug fix: bug 417 fixed -- source location reporting is now more robust.
3612 * bug fix: SUBSEQ on a list will now correctly signal an error if if
3613 END is smaller then START.
3614 * bug fix: SB-PROFILE will no longer report extra consing for nested
3615 calls to profiled functions.
3616 * bug fix: ROOM implementation had bogus fixnum declarations which
3617 could cause type-errors when calling ROOM on large images.
3618 * bug fix: if file compilation is aborted, the partial fasl is now
3619 deleted, and COMPILE-FILE returns NIL as the primary value.
3620 * bug fix: number of thread safety issues relating to SBCL's internal
3621 hash-table usage have been fixed.
3622 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
3623 be returned from its body when the values were being returned
3624 using unknown-values return convection and the W-P-O was wrapped
3625 inside an UNWIND-PROTECT.
3626 * bug fix: sb-posix should now compile again under Windows, enabling
3627 slime to work again.
3629 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
3630 * incompatible change: hash-table accessor functions are no longer
3631 automatically protected by locks. Concurrent accesses on the same hash-table
3632 from multiple threads can give inconsistent results or even corrupt the
3633 hash-table completely. Multi-threaded applications should do their own
3634 locking at the correct granularity. In the current implementation it is
3635 still safe to have multiple readers access the same table, but it's not
3636 guaranteed that this property will be maintained in future releases.
3637 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
3638 and will signal an error at runtime.
3639 * enhancement: SB-THREAD package now exports a semaphore interface.
3640 * enhancement: CONS can now stack-allocate on x86 and
3641 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
3643 * enhancement: nested lists can now be stack allocated on
3644 platforms providing stack allocation support.
3645 * enhancement: dynamic-extent support has been extended to support
3646 cases where there are multiple possible sources for the stack
3648 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
3649 if the mutex is uncontested on Linux.
3650 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
3651 as specified by the CLHS. (thanks to Tobias Rittweiler)
3652 * bug fix: NaN comparison now works on x86-64.
3653 * bug fix: CLOSE :ABORT T on a stream with pending output now
3655 * bug fix: instances of non-standard metaclasses using standard
3656 instance structure protocol sometimes missed the slot type checks
3658 * bug fix: known functions can be inlined in high-debug code.
3660 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
3661 * minor incompatible change: the MSI installer on Windows no longer
3662 associates .lisp and .fasl files with the installed SBCL.
3663 * minor incompatible change: :UNIX is no longer present in *FEATURES*
3664 on Windows. (thanks to Luis Oliviera)
3665 * new feature: SB-CLTL2 contrib module now implements
3666 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
3667 * optimization: scavenging weak pointers is now more efficient,
3668 requiring O(1) instead of O(N) per weak pointer to identify
3669 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
3670 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
3671 method bodies using constant slot-names when the first argument is
3672 a specializer parameter for the method.
3673 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
3674 names, when the class of the instance is a direct instance
3675 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
3676 as slow as the constant slot-name case.)
3677 * optimization: member type construction is now O(N) instead
3679 * optimization: UNION and NUNION are now O(N+M) for large
3680 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
3682 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
3683 now more readable in environments like Slime which display it.
3684 (thanks to Tobias C. Rittweiler)
3685 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
3686 was able to infer the correct argument type for the object on which
3687 the CAS operation was being performed.
3688 * bug fix: copy propagation interfered with parallel assignment
3689 semantics in local calls. (reported by Paul Khuong)
3690 * bug fix: the signed modular fixnum shift compiled to wrong code on
3691 x86 and x86-64. (spotted by a slight modification to some of
3694 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
3695 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
3696 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
3697 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
3699 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
3700 and generic function now print the object identity for anonymous
3701 instances. (thanks to Attila Lendvai)
3702 * enhancement: as an extension to MOP, SBCL now supports SETF of
3703 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
3704 (thanks to Attila Lendvai)
3705 * enhancement: sb-cover has an alternate annotation mode which puts
3706 the form annotations at the car of the form, instead of annotating
3707 it completely. The benefit of this mode is that it shows better
3708 which forms were instrumented by the compiler.
3709 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
3710 by printer control variables. (reported by Dan Corkill)
3711 * bug fix: system leaked memory when delayed output was performed by
3712 the OS in smaller chunks then expected. (thanks to David Smith)
3713 * bug fix: system leaked memory when file streams were not closed
3715 * bug fix: large objects written to slow streams that were modified
3716 after the write could end up with the modified state written to
3717 the underlying file descriptor.
3718 * bug fix: multiple threads operating in parallel on the same stream
3719 could cause buffer-overflows.
3720 * bug fix: source location information is stored correctly
3721 (broken since 1.0.6). This bug would generally show up as the
3722 Slime debugger highlighting the wrong form when the sldb-show-source
3724 * bug fix: Branch forms are again annotated as branches in the sb-cover
3726 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
3727 on x86-64. (reported by Gregory Vanuxem)
3728 * bug fix: EQUALP could return wrong results for structures with raw
3729 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
3730 word). (reported by Vjacheslav Fyodorov)
3731 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
3734 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
3735 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
3736 atomic compare-and-swap operations on threaded platforms.
3737 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
3738 allows assigning a global minimum value to optimization qualities
3739 (overriding proclamations and declarations).
3740 * enhancement: closed over variables can be stack-allocated on x86
3742 * performance bug fix: GETHASH and (SETF GETHASH) are once again
3744 * optimization: slot definition lookup is now O(1). This speeds up
3745 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
3746 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
3747 * optimization: ASSOC and MEMBER can now be open-coded for all
3748 combinations of keyword arguments when second argument is constant
3749 and SPEED >= SPACE. In other cases a specialized version is
3751 * bug fix: using obsoleted structure instances with TYPEP and
3752 generic functions now signals a sensible error.
3753 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
3754 (reported by Kristoffer Kvello)
3755 * bug fix: backtrace construction is now more careful when making
3756 lisp-objects from pointers on the stack, to avoid creating bogus
3757 objects that can be seen by the GC.
3758 * bug fix: defaulting of values in contexts expecting more than 7
3759 variables now works on x86-64. (reported by Christopher Laux)
3760 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
3762 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
3763 as the property-list of a symbol.
3764 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
3765 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
3766 situations requested, are once again file-compileable. (reported
3769 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
3770 * MOP improvement: support for user-defined subclasses of
3771 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
3772 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
3773 the expansion of DEFMETHOD, is responsible for generating a form
3774 which creates a list of specializers when evaluated. Additional
3775 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
3776 debugging and introspective support.
3777 * minor incompatible change: the (unsupported) spinlock interface
3778 has changed: free spinlock now has the value NIL, and a held spinlock
3779 has the owning thread as its value.
3780 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
3781 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
3783 * enhancement: name of a socket-stream is now "a socket" instead of
3784 "a constant string".
3785 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
3786 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
3787 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
3788 for generic functions. (Thanks to Tobias C. Rittweiler)
3789 * optimization: bignum printing speed has been improved by 20-40%
3790 (depending on the bignum size.)
3791 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
3793 * bug fix: the cache used by the CLOS to store precomputed effective
3794 methods, slot offsets, and constant return values is now thread and
3796 * bug fix: generic function dispatch function updating is now thread
3797 and interrupt safe (in the sense that the known issues have been
3799 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
3800 * bug fix: interning EQL-specializers is now thread and interrupt safe.
3801 * bug fix: asdf systems with dependencies to the SB-POSIX or
3802 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
3803 * bug fix: interrupt safety of applicable method computation has been
3806 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
3807 * new contrib: sb-cover, an experimental code coverage tool, is included
3808 as a contrib module.
3809 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
3810 significantly faster.
3811 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3812 produce more efficient code on x86-64 if the compiler can determine
3813 that (+ INDEX <constant>) does not require a bounds check and FOO
3814 has an element type at least 8 bits wide.
3815 * enhancement: a new, experimental synchronous timeout facility is
3816 provided. Refer to SB-SYS:WITH-DEADLINE for details.
3817 * enhancement: when a symbol name conflict error arises, the
3818 conflicting symbols are always printed with a package prefix.
3819 (thanks to Kevin Reid)
3820 * enhancement: stepping is now once again supported on the SPARC and
3821 MIPS platforms. (It is also now more likely to work on CheneyGC
3823 * enhancement: sb-sprof can now also track and report accurate call
3825 * bug fixes: the treatment of non-standard subclasses of
3826 SB-MOP:SPECIALIZER is more correct.
3827 * incompatible change: PURIFY no longer copies the data from the
3828 dynamic space into the static and read-only spaces on platforms
3829 that use the generational garbage collector
3830 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
3832 * bug fix: GC race condition occasionally resulting in crashes with
3833 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
3835 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3837 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3838 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3839 * bug fix: an asynchronous interrupt could previously leave the
3840 system running with GC inhibited.
3841 * bug fix: a DECLARE form evaluated at top-level now causes an error
3842 rather than silently (or verbosely) returning NIL.
3843 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3844 result in a error being signalled due to source form lookup errors.
3845 (reported by Peter Graves)
3847 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3848 * incompatible change: removed writer methods for host-ent-name,
3849 host-ent-addresses -- changing the values did not update the DNS
3851 * minor incompatible change: changed experimental JOIN-THREAD interface
3852 * documentation: the manual now lists reader and writer methods
3853 in class slot documentation sections. (thanks to Richard M Kreuter)
3854 * documentation: unwinding from asyncronous events has been
3855 documented as unsafe.
3856 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3857 in multithreaded application code.
3858 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3859 platforms. (thanks to James Anderson for the optimization hint)
3860 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3862 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3863 variants no longer cons.
3864 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3865 their NOT- variants no longer cons.
3866 * optimization: EQUAL hash tables no longer use SXHASH for objects
3867 of all data types, but instead use an EQL hash for types for which
3868 EQUAL is the same as EQL.
3869 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3870 are significantly faster.
3871 * optimization: new STRING-OUTPUT-STREAM implementation is much
3872 faster for large outputs and conses 30% less on average.
3873 * enhancement: XREF information is now collected for references made
3874 to global variables using SYMBOL-VALUE and a constant argument.
3875 * enhancement: SIGINT now causes a specific condition
3876 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3877 * bug fix: FILE-POSITION used to signal an error in some cases where
3878 ANSI requires it to return NIL.
3879 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3880 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3881 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3883 * bug fix: bad type declaration in the CLOS implementation has
3884 been fixed. (reported by James Anderson)
3885 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3886 (thanks to Lutz Euler)
3887 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3888 required by the CLHS. (reported by Samium Gromoff)
3889 * bug fix: dead unbound variable references now signal an error.
3890 (reported by Marco Monteiro)
3891 * bug fix: / with an unused value was being deleted in safe code.
3892 (thanks to Marco Monteiro and Kevin Reid)
3893 * bug fix: number of characters that can be written onto a single
3894 line in a file is unlimited.
3895 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3896 been fixed by inhibiting interrupts for when GC is disabled.
3897 * bug fix: some interrupt safety issues with GETHASH, (SETF
3898 GETHASH), CLRHASH and REMHASH have been fixed.
3899 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3900 specifier no longer causes infinite recursion.
3901 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3902 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3903 * bug fix: an &environment argument with the correct variable information
3904 is passed to macros that are expanded during byte compilation.
3905 (reported by Samium Gromoff)
3906 * bug fix: a logic error was causing the hash function for bignums to
3907 have excessive amounts of collisions. (reported by Faré Rideau)
3908 * bug fix: modifying the contents of an array could change the return
3909 value of SXHASH on that array, which is only allowed for strings
3910 and bit vectors. (bug introduced in 0.9.16)
3911 * improvement: the x86-64/darwin port now passes all tests (except
3912 for the debugger tests) but should still be considered
3913 experimental until this is fixed.
3914 * improvement: a style-warning is signaled for CASE (etc) clauses with
3915 duplicate keys. (thanks to Kevin Reid)
3916 * improvement: macos/x86 and macos/x86-64 now use mach exception
3917 handlers for dealing with illegal instructions (for trapping and
3918 error handling) and memory protection violations (for GC).
3920 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3921 * new platform: experimental support for x86-64/darwin (MacOS).
3922 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3923 and getnameinfo sockets functions are used instead of gethostbyaddr
3924 and gethostbyname, on platforms where the newer functions are available.
3925 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3927 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3928 don't print the startup banner, but behave as if --noinform was passed
3929 as a command line argument. (thanks to Kevin Reid)
3930 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3931 * optimization: code using alien values with undeclared types is much faster.
3932 * optimization: the compiler is now able to open code SEARCH in more cases.
3933 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3934 * bug fix: using standardized COMMON-LISP special variables as loop
3935 variables no longer signals bogus package lock violations. (reported
3937 * bug fix: declaring local loop variables to be of a range-limited type
3938 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3939 (reported by Andras Simon)
3940 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3941 bugs remain on x86-64.)
3942 * bug fix: the #= and ## reader macros now interact reasonably with
3943 funcallable instances.
3944 * bug fix: type-checks for function arguments were compiled using the
3945 compiler policy settings of the wrong lexical environment (in 1.0.2
3947 * bug fix: SHADOW accepts characters as string designators, as required
3948 by the spec (thanks to Eric Marsden)
3949 * bug fix: fixed GC safety issues when foreign functions are called with
3950 non-base strings as arguments
3951 * bug fix: more consistent error output for fatal-compiler-warnings, like
3953 * bug fix: functions with proper names were showing up as NIL in
3954 backtraces (reported by Edi Weitz, regression in 1.0.2)
3956 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3957 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3958 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3959 produce more efficient code on the x86 if the compiler can determine
3960 that (+ INDEX <constant>) does not require a bounds check and FOO
3961 has an element type at least 8 bits wide.
3962 * bug fix: references to undefined variables are handled the same way
3963 in toplevel forms as in the normal compiler
3964 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3966 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3967 (thanks to Jon Buller)
3968 * improvement: faster compilation times for complex functions
3969 * improvement: added readlink support to SB-POSIX (thanks to Richard
3972 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3973 * improvement: experimental support for mach exception handling on
3974 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3976 * improvement: support for GBK external format.
3977 (thanks to Chun Tian (binghe))
3978 * improvement: the debugger now displays variables that have been closed
3979 over, in code compiled with (DEBUG 2) or higher
3980 * improvement: support for executable cores on NetBSD (thanks to
3982 * new feature: added a RESTART-FRAME debugger command
3983 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3984 be used to provide an implementation for FILE-POSITION on Gray streams
3985 (thanks to Eric Marsden)
3986 * new feature: add syslog, openlog and closelog support to SB-POSIX
3987 (thanks to Richard Kreuter)
3988 * optimization: the function call overhead in code compiled with
3989 a high DEBUG optimization setting is significantly
3990 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3991 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3992 (thanks to Tony Martinez)
3993 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3994 evaluated once (reported by Kevin Reid)
3995 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3996 works again (thanks to Kilian Sprotte)
3997 * bug fix: an error is signaled for tagbodies with duplicate tags
3998 (thanks to Stephen Wilson)
3999 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
4000 * bug fix: Win32 port can now handle foreign code unwinding Lisp
4001 stack frames from alien callbacks.
4002 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
4003 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
4004 65k pages (thanks to David Woodhouse)
4005 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
4007 changes in sbcl-1.0.1 relative to sbcl-1.0:
4008 * new platform: FreeBSD/x86-64, including support for threading.
4009 * new feature: the compiler stores cross-referencing information
4010 about function calls (who-calls), macroexpansion (who-macroexpands)
4011 and special variables (who-binds, who-sets, who-references) for code
4012 compiled with (< SPACE 3). This information is available through the
4013 sb-introspect contrib.
4014 * new feature: users may subclass SEQUENCE, and have instances of
4015 these classes interoperate with standard Common Lisp functions if
4016 a number of methods are defined. (This feature is experimental
4017 and the interface subject to change based on feedback from SBCL
4018 users and the general community)
4019 * improvement: sb-sprof traces call stacks to an arbitrary depth on
4020 x86/x86-64, rather than the previous fixed depth of 8
4021 * improvement: another pthread back-end of mutex "pthread-futex".
4022 * bug fix: non-ascii command-line arguments are processed correctly
4023 (thanks to Yaroslav Kavenchuk)
4024 * bug fix: non-required arguments were not passed correctly when a method
4025 defined using DEFMETHOD was called from a mop-generated method using
4026 CALL-NEXT-METHOD (reported by Pascal Costanza)
4027 * bug fix: recursion is now permitted in accessors through
4028 SLOT-UNBOUND. (reported by Pascal Costanza)
4029 * bug fix: an error was signaled at startup if the HOME environment
4030 variable was defined, but had an empty value (reported by Peter Van Eynde)
4031 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
4032 signal a PROGRAM-ERROR, not a BUG.
4033 * bug fix: SB-POSIX:READDIR works when built with large file support.
4034 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
4036 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
4037 for better automatic indentation support. (thanks to Matt Pillsbury)
4038 * optimization: loading generic functions no longer takes O(n^2) time,
4039 proportional to the amount of methods in the generic function
4040 (reported by Todd Sabin and Jeremy Brown)
4041 * optimization: the FIND and POSITION family of sequence functions
4042 are significantly faster on arrays whose element types have been
4044 * improvements to the Windows port:
4045 ** Intermittent heap corruption problems have been fixed. (thanks
4046 to Alastair Bridgewater)
4047 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
4049 ** Lisp is able to unwind foreign exception frames from alien
4050 callbacks. (thanks to Alastair Bridgewater)
4052 changes in sbcl-1.0 relative to sbcl-0.9.18:
4053 * improvement: experimental support for threading on FreeBSD/x86.
4054 (thanks to NIIMI Satoshi)
4055 * improvement: runtime option --dynamic-space-size can be used
4056 to set the size of the dynamic space reserved on startup.
4057 * improvement: floating point modes in effect are now saved in
4058 core, and restored on startup.
4059 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
4060 startup, not time since first call to GET-INTERNAL-REAL-TIME.
4061 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
4062 threads are not running after *SAVE-HOOKS* have run.
4063 * improvement: writes to CLOS instance slots are type-checked in code
4064 compiled with (SAFETY 3)
4065 * improvement: floating-point exception handling on FreeBSD (thanks to
4067 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
4068 (thanks to Zach Beane)
4069 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
4071 * improvement: added support for the Shift-JIS external format.
4072 (contributed by NIIMI Satoshi)
4073 * improvement: callbacks are supported on Linux/PPC. (thanks to
4075 * bug fix: compiler bug triggered by a (non-standard) VALUES
4076 declaration in a LET* was fixed. (reported by Kaersten Poeck)
4077 * bug fix: file compiler no longer confuses validated and already
4078 dumped structurres. (reported by Kaersten Poeck)
4079 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
4080 fill-pointer signals a type-error as required. (thanks to
4082 * bug fix: disassemly of funcallable instances works.
4083 * bug fix: single stepping on PPC.
4084 * bug fix: fix thread-safety problems in the type system (generally
4085 manifesting as nonsensical errors like "STRING is a bad type specifier
4086 for sequences" or "The value 1 is not of type FIXNUM")
4087 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
4088 (reported by Josip Gracin)
4089 * bug fix: an error is signaled for attempts to displace arrays with
4090 incompatible element types (thanks to Mario Mommer)
4091 * bug fix: more correct handling of wide characters in debug info
4092 (bug reported by Attila Lendvai and fixed by Juho Snellman)
4093 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
4094 and don't cause extra consing
4095 * optimization: MAP and MAP-INTO are significantly faster on vectors
4096 whose elements types have been declared.
4097 * Improvements to SB-SPROF:
4098 ** Support for allocation profiling
4099 ** Reduced profiling overhead, especially for long profiling runs
4100 * Improvements to the Windows port:
4101 ** floating point exceptions are now reported correctly.
4102 ** stack exhaustion detection works partially.
4103 ** more accurate GET-INTERNAL-REAL-TIME.
4104 ** better RUN-PROGRAM behaviour in case of errors in the child
4106 ** PROBE-FILE now simplifies pathnames correctly.
4107 ** DIRECTORY now works correctly with :WILD-INFERIORS.
4108 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
4109 1st 1970 (although time timezone data will be unreliable).
4110 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
4112 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
4113 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
4114 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
4116 * bug fix: two potential GC deadlocks affecting threaded builds.
4117 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
4118 returns T (reported by Anton Kazennikov)
4119 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
4120 with non-variable places
4121 * bug fix: remove a race condition in the setting of
4122 funcallable-instance functions, this should make threaded CLOS
4123 code more stable against memory faults.
4124 * bug fix: corruption of specials when unbinding is interrupted by an
4125 asynchronous unwind (reported by Hannu Koivisto)
4126 * improvement: the debugger will now also display local variables that
4127 are only used once, for code compiled with a DEBUG optimization quality
4130 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
4131 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
4132 * incompatible change: External-format support for FFI calls. The
4133 SB-ALIEN:C-STRING no longer implies an ASCII
4134 external-format. Instead the string is subject to external-format
4135 conversion. Additionally return values of type SB-ALIEN:C-STRING
4136 are by default of type (SIMPLE-ARRAY CHARACTER), not
4137 SIMPLE-BASE-STRING. For an alien type that behaves like the old
4138 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
4139 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
4140 * incompatible change: SB-EXT package no longer contains the
4141 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
4142 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
4144 * incompatible change: the single-stepper is no longer available
4145 on Alpha, Mips and Sparc platforms.
4146 * minor incompatible change: the direct superclasses of
4147 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
4148 not (STANDARD-OBJECT FUNCTION). This makes the
4149 class-precedence-lists of GENERIC-FUNCTION and
4150 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
4152 * minor incompatible change: the default stream external format on
4153 non-unicode SBCL is no longer detected from the locale, but is always
4155 * new feature: Add a version of evaluator that uses an interpreter instead
4156 of the compiler. EVAL still uses the compiler by default, to switch it
4157 to use the interpreter, set the value of the variable
4158 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
4159 * minor incompatible change: the single-stepper REPL has been merged
4160 with the normal debugger (see the "Stepping" heading of the debugger help
4161 for more details). The debugger command STEP will no longer switch
4162 to the single-stepper REPL.
4163 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
4164 for a type now works.
4165 * bug fix: loading of default sysinit file works. (thanks to Leonid
4167 * bug fix: better detection of circularities in the file-compiler.
4168 (reported by Marco Monteiro)
4169 * bug fix: the CL pathname functions now work with files that have
4170 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
4171 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
4172 systems with Unix98 pty semantics.
4173 * bug fix: ASDF-INSTALL will now work with bsd tar.
4174 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
4176 * bug fix: timers expiring in dead threads no longer cause a
4177 type-error (reported by Paul "Nonny Mouse").
4178 * bug fix: thanks to more lightweight single-stepper instrumentation,
4179 code compiled with (DEBUG 3) will compile and execute significantly faster,
4180 and will have more accurate type-inferencing than before
4181 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
4182 whose bindings are modified
4183 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
4184 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
4185 ** replace dummy implementations of CL:MACHINE-INSTANCE and
4186 CL:SOFTWARE-VERSION with proper version
4188 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
4189 * feature: implemented the READER-METHOD-CLASS and
4190 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
4191 as specified by AMOP.
4192 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
4194 * optimization: faster LOGCOUNT implementation on x86 and x86-64
4195 (thanks to Lutz Euler)
4196 * optimization: hashing of general arrays and vectors has been
4197 improved. (reported by Any Fingerhut)
4198 * enhancement: SB-INTROSPECT is now able to find definitions of
4199 profiled functions. (thanks to Troels Henriksen)
4200 * enhancement: compiler-macro expansion applies now to FUNCALL forms
4201 as well, allowing compiler-macros for SETF-functions to expand.
4202 * enhancement: step-instrumentation no longer wraps known
4203 single-value functions with multiple-value context, allowing
4204 better type inference.
4205 * fixed bug #337: use of MAKE-METHOD in method combination now works
4206 even in the presence of user-defined method classes. (reported by
4207 Bruno Haible and Pascal Costanza)
4208 * fixed bug #339(c): if there are applicable methods not part of any
4209 long-form method-combination group, call INVALID-METHOD-ERROR.
4210 (reported by Bruno Haible)
4211 * fixed bug #361: the :FUNCTION initarg in the protocol for
4212 initialization of methods can now be used to override
4213 internally-produced optimized functions. (reported by Bruno
4215 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
4216 system-provided lambda expression no longer cause warnings about
4217 unbound #:|pv-table| symbols.
4218 * bug fix: improved the handling of type declarations and the
4219 detection of violations for keyword arguments with non-constant
4221 * bug fix: potentially erronous calls to PATHNAME and
4222 MERGE-PATHNAMES were being flushed in some cases.
4223 (reported by Richard Kreuter)
4224 * bug fix: compiled calls to TYPEP were mishandling obsolete
4225 instances. (reported by James Bielman and Attila Lendvai)
4226 * bug fix: format strings with ~> without matching ~< no longer
4227 trigger an AVER, but signal an understandable error instead.
4228 (reported by Antonio Martinez)
4229 * bug fix: specifying an output-file without a pathname-type for
4230 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
4231 of input-file instead of "fasl". (reported by Robert Dodier)
4232 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
4233 (reported by James Y Knight).
4234 * bug fix: compiler-macros-function did not consider the environment
4235 argument for shadowing by local functions.
4236 * bug fix: compiler-macros expansion was inhibited by local INLINE
4238 * bug fix: inline expansions of known functions were subject to
4239 step-instrumentation in high debug policies, leading to problems
4240 with type-inference.
4241 * bug fix: compiler failed to differentiate between different CONS
4242 types in some cases.
4243 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
4244 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
4245 * bug fix: #368: incorrect use of expressed vs. upgraded array
4247 * bug fix: #306a: more precise unions of array types.
4248 * thread-safety improvements:
4249 ** CONDITION-WAIT could return early on Linux, if the thread was
4250 interrupted and subsequently continued with SIGCONT.
4251 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
4253 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
4254 * added support for the ucs-2 external format. (contributed by Ivan
4256 * minor incompatible change: pretty printing of objects of type
4257 (cons symbol) is, in the default pprint-dispatch-table, now
4258 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
4260 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
4261 called later in a class's lifetime, possibly as late as when the
4262 first instance of the class is created. Previously,
4263 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
4264 class became finalizeable.
4265 * fixed bug: FILE-POSITION sometimes returned inconsistent results
4266 for multibyte external-format streams. (thanks to "vbzoli")
4267 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
4268 with :ALLOCATION :CLASS inherited from superclasses of the
4270 * fixed bug: anonymous classes can now be created using the :NAME
4271 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
4272 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
4273 * fixed bug: core-files saved with :EXECUTABLE T can again be
4274 executed when SBCL_HOME isn't set. (reported by James Knight)
4275 * fixed bug: toplevel LOCALLY forms with declarations could
4276 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
4277 * fixed bug: printing from several different threads using different
4278 values of *print-case* could cause invalid output, due to
4279 some internal special variables of the printer not being bound
4280 thread-locally (reported by Max Mikhanosha)
4281 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
4282 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
4283 (reported by Pascal Costanza)
4284 * fixed bug: FINALIZE-INHERITANCE is called from
4285 REINITIALIZE-INSTANCE on classes when the class has previously
4286 been finalized, as required by AMOP.
4287 * minor code generation optimizations:
4288 ** better register allocation in CLOS dispatching functions
4289 ** overflow detection when coercing signed bytes to fixnums on x86-64
4290 ** is now implemented with one IMUL instruction instead of three shifts
4291 ** more efficient bit-vector access on x86 and x86-64
4292 ** more efficient access to raw structure slots on x86 and x86-64
4293 * fixed some bugs revealed by Paul Dietz' test suite:
4294 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
4295 return its argument.
4297 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
4298 * feature: thread support on Solaris/x86, and experimental thread support
4300 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
4302 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
4303 default method for SLOT-UNBOUND.
4304 * minor incompatible change: prevent the user from specializing the
4305 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
4306 somewhat counter to the intent of the protocol, I (CSR) think, and
4307 additionally it just doesn't work in SBCL as currently
4308 implemented, thanks to optimizations (that are always valid for
4309 the other three SLOT-VALUEish functions, but not for the setter).
4310 * minor incompatible change: the :SB-LDB feature is now enabled by
4311 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
4312 the low-level debugger.
4313 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
4314 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
4315 down to an SB-SYS:FD-STREAM, allowing direct communication in
4316 more cases. Temporary files and pipes are still used as a fallback
4318 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
4319 on the non-reentrant C functions localtime(3) and gmtime(3).
4320 * bug fix: global optimization policy was not visible in LOCALLY and
4322 * bug fix: class objects can be used as specializers in methods.
4323 (reported by Pascal Costanza)
4324 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
4325 with a type error. (reported by blitz_ on #lisp)
4326 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
4327 failed with a type error. (reported by Pascal Bourguignon)
4328 * bug fix: merging pathnames against defaults with :DIRECTORY
4329 starting with '(:RELATIVE :BACK) should preserve the :BACK.
4330 (reported by James Y Knight)
4331 * bug fix: saving large (>2GB) cores on x86-64 now works
4332 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
4333 constant index and a (simple-array (signed-byte 32)) array
4334 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
4335 error (patch by Robert J. Macomber)
4336 * feature: TIME now displays the amount of run-time spent in GC
4337 * bug fix: The debugger now does a better job of respecting
4338 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
4339 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
4340 workaround for bug 403.)
4341 * bug fix: floating point exception handling now works on FreeBSD
4342 (thanks to NIIMI Satoshi)
4343 * fixed some bugs revealed by Paul Dietz' test suite:
4344 ** MISC.641: LET-conversion were not supposed to work in late
4346 * improvements to the Win32/x86 port:
4347 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
4348 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
4350 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
4351 * new feature: source path information is generated for macro-expansion
4352 errors for use in IDE's like Slime (thanks to Helmut Eller)
4353 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
4354 * bug fix: compiler does not loop forever on an invalid type in
4356 * improvement: compilation of most CLOS applications is significantly
4358 * optimization: added a limited bytecode compiler for simple toplevel
4359 forms, speeding up compilation and FASL loading
4360 * bug fix: the statistical profiler now properly distinguishes anonymous
4363 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
4364 * minor incompatible change: in sbcl-0.9.11 (but not earlier
4365 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
4366 into subclasses of the finalized class. Now user calls to
4367 FINALIZE-INHERITANCE finalize just the one class, and calls by the
4368 system return before any subclasses are finalized.
4369 * minor incompatible change: The reader no longer ignores errors
4370 regarding non-existent packages in #+ and #- feature tests.
4371 * new feature: command line options --no-sysinit, --no-userinit to
4372 inhibit loading the corresponding init files
4373 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
4374 for sending data through UDP sockets (thanks to François-René Rideau)
4375 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
4376 error is signalled instead (thanks to François-René Rideau)
4377 * minor incompatible change: Error signalling behaviour of lexical
4378 operations violating package locks has changed slightly. Refer to
4379 documentation on package locks for details.
4380 * enhancement: EVAL can process IF-expressions without resorting to the
4382 * bug fix: Some operations involving SIN, COS, or TAN weren't being
4383 constant-folded properly due to missing out-of-line functions.
4384 (reported by Mika Pihlajamäki)
4385 * bug fix: LISTEN sometimes returned T even in cases where no data was
4386 immediately available from the stream
4387 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
4388 were reversed. (reported by Levente Mészáros)
4389 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
4390 when given a vector displaced to an adjustable array. (reported
4392 * bug fix: derivation of float boundaries from numbers outside the
4393 appropriate float range (reported by John Wiseman)
4394 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
4396 * bug fix: precomputing cache entries for generic functions with
4397 some subclasses of specializers as yet invalid does not attempt to
4398 fill a cache line with a negative offset. (reported by Levente
4400 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
4401 allow condition class objects as arguments to DOCUMENTATION and
4402 (SETF DOCUMENTATION); only find and set documentation for
4403 structure names for the STRUCTURE doc-type. (suggested by Gary
4405 * improvements to the Win32/x86 port:
4406 ** (user-homedir-pathname) and default initialization file
4407 locations now know about the user's "Documents and Settings"
4408 directory (thanks to Yaroslav Kavenchuk)
4409 ** run-program is implemented (thanks to Mike Thomas)
4410 ** sockets support (thanks to Timothy Ritchey)
4411 ** better backtrace support (thanks to Alastair Bridgewater)
4412 ** sb-grovel supported
4413 ** asdf-install and sb-posix work somewhat
4414 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
4415 * improvements to the Solaris/x86 port:
4416 ** works on Solaris 11/Solaris Express
4417 ** floating-point exception handling support
4418 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
4419 * fixed some bugs revealed by Paul Dietz' test suite:
4420 ** REMOVE-METHOD returns its generic function argument even when
4421 the method is not one of the generic functions' methods.
4422 ** objects declared as MEMBER types can be admissible arguments to
4423 structure accessors.
4424 ** printing characters should simply be printed by the FORMAT ~:C
4426 ** compiler failure when compiling functions with hairy constant
4427 defaults for optional parameters.
4428 ** compiler produces wrong code when MAYBE-INLINE-expanding a
4429 function, which is already optimized.
4431 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
4432 * new platform: experimental support for SBCL x86/Darwin, including
4433 MacOS X 10.4.5 on Intel.
4434 * new feature: Unicode character names are now known to the system
4435 (through CHAR-NAME and NAME-CHAR).
4436 * new feature: the filesystem location of SBCL's core file is
4437 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
4438 * minor incompatible change: the contrib modules SB-POSIX and
4439 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
4440 this change is to make it easier to distribute
4441 location-independent binaries.
4442 * bug fix: as implied by AMOP, standardized classes no longer have
4443 slots named by external symbols of public packages. (reported by
4445 * optimization: calling functions via constant symbols -- as in
4446 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
4447 via the function object as in (FUNCALL #'FOO).
4448 * optimization: on x86 and x86-64, the calling convention for the
4449 case of dealing with an unknown number of values has been altered
4450 to be friendlier to the prediction heuristics implemented,
4451 particularly with reference to CALL and RET pairing. (thanks to
4452 Alastair Bridgewater)
4453 * optimization: on x86, the code for access to thread-local symbol
4454 values and binding/unbinding of thread-local symbols is smaller.
4455 (thanks to Alastair Bridgewater)
4456 * enhancement: CONSTANTP is now able to determine constantness of
4457 more complex forms, including calls to constant-foldable standardized
4458 functions and some special forms beyond QUOTE.
4459 * fixed bug: occasional GC crashes on Solaris/x86
4460 * optimization: x86-64 supports stack allocation of results of simple
4461 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
4462 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
4463 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
4464 (thanks to James Knight)
4465 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
4466 by the standard (thanks to Stephen Compall)
4468 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
4469 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
4470 be used for bundling the runtime and the core file into one
4471 executable binary. This feature is not currently supported on all SBCL
4472 platforms. (thanks to James Bielman and NIIMI Satoshi)
4473 * new feature: a generational or ephemeral garbage collector is now
4474 the default on the PowerPC platform (both Linux and Darwin). The
4475 old Cheney (stop and copy) collector is a build-time option.
4476 (thanks to Cyrus Harmon, after Raymond Toy)
4477 * minor incompatible change: the method by which SBCL finds its
4478 contributed modules has changed; it no longer relies on symbolic
4479 links from an $SBCL_HOME/systems directory, but searches directly
4480 in the subdirectories of $SBCL_HOME.
4481 * enhancement: the dynamic heap size on the Linux/PPC platform is
4482 markedly larger, even using the older Cheney garbage collector.
4483 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
4484 certain complicated string types. (reported by Gary King)
4485 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
4486 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
4487 * fixed bug: DOCUMENTATION on structures no longer signals an
4488 error if no structure type of the right name exists. (reported by
4490 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
4491 applicable non-standard primary or :AROUND method on
4492 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
4493 no longer cause unbound variable errors. (reported by Kevin Reid)
4494 * fixed bug: metacircle resolution in cases where methods have slots
4495 added before the slots from STANDARD-METHOD. (reported by Jean
4497 * fixed bug: the Power PC assembly code for calling into lisp
4498 sometimes computed its return address wrongly (depending on the
4499 15th bit of the address, fixed at link time). This used to
4500 manifest itself in a segmentation violation while building PCL.
4501 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
4502 many others over the years)
4503 * fixed bug: ROOM no longer reports silly numbers for stack usage if
4504 the stack pointer (treated as a signed integer) is negative.
4505 (thanks to Peter van Eynde)
4507 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
4508 * new platform: experimental support for the Windows operating
4509 system has been added. (thanks to Alastair Bridgewater)
4510 * fixed several bugs in and robustified the PPC FFI (including
4511 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
4512 * bug fix: allow non-simple string symbol names (reported by Paul
4514 * bug fix: interrupt handling on NetBSD (thanks to Richard M
4516 * bug fix: saving a core corrupted callbacks on x86/x86-64
4517 * bug fix: closed a loophole in metacircularity detection and
4518 grounding in the PCL implementation of CLOS.
4519 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
4520 (reported by tomppa on #lisp)
4521 * bug fix: clear the direction flag on Lisp -> C transitions, as
4522 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
4523 (reported by Andrej Grozin and Hendrik Maryns)
4524 * optimization: major improvements to GC efficiency on GENCGC platforms
4525 * optimization: faster implementation of EQUAL
4526 * optimization: emit more efficient opcodes for some common
4527 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
4528 * optimization: several other minor code-generation improvements on x86-64
4529 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
4531 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
4532 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4533 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
4534 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
4535 by ANSI as a generic function, and for consistency (SETF
4536 GENERIC-FUNCTION-NAME) is treated likewise.
4537 * fixed bug #233.b: make constraint propagation notice when a variable
4538 value is changed after it is referenced but before it is used
4539 * fixed bug #296: no more arbitrary behaviour from filenames with
4540 odd characters as --load arguments. (reported by Adam Warner)
4541 * fixed bug #390: :CHARACTER-SET pathname components now work as
4542 expected. (reported by Tim Daly Jr)
4543 * fixed bug #391: complicated :TYPE intersections in slot
4544 definitions no longer cause an error in PCL internals.
4545 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
4546 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
4547 returning the number of octets which would be written to the
4548 file-stream. (thanks to Robert J. Macomber)
4549 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
4550 arguments to the internal stream functions. (thanks to David
4552 * bug fix: stack exhaustion is now handled on the x86/SunOS
4553 platform. (thanks to Daisuke Homma)
4554 * bug fix: more accurate ROOM results on GENCGC platforms
4555 * optimization: improved type inference for arithmetic-for
4556 index variables in LOOP
4557 * optimization: faster floating-point SQRT on x86-64
4558 * fixed some bugs revealed by Paul Dietz' test suite:
4559 ** DOCUMENTATION returns NIL instead of "" for method combinations
4560 that don't have a docstring
4562 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
4563 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4564 GENERIC-FUNCTION-NAME) are no longer generic functions, and
4565 therefore are not customizeable by user code (as seems to be at
4566 least permitted and maybe required by AMOP). As a consolation,
4567 however, the SBCL implementation of these functions now calls
4568 REINITIALIZE-INSTANCE as specified by AMOP.
4569 * bug fix: slot-definition documentation is propagated as per ANSI
4570 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
4571 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
4572 argument, as do eslotd initialization methods. (from Pascal
4573 Costanza's "Closer" project)
4574 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
4575 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
4577 * bug fix: it is now possible to have more than one subclass of
4578 STANDARD-GENERIC-FUNCTION without causing stack overflow.
4579 (reported by Bruno Haible, Pascal Costanza and others)
4580 * bug fix: the dependent update protocol now works for generic
4581 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
4582 and Pascal Costanza)
4583 * bug fix: condition-class instances corresponding to
4584 DEFINE-CONDITION forms are now created eagerly. (reported by
4585 Kalle Olavi Niemitalo on comp.lang.lisp)
4586 * bug fix: floating point printing is more accurate in some
4587 circumstances. (thanks to Simon Alexander)
4588 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
4589 merged with *DEFAULT-PATHNAME-DEFAULTS*.
4590 * bug fix: callbacks on OS X now preserve stack-alignment.
4591 (thanks to Cyrus Harmon)
4592 * enhancement: the x86-64 disassembler is much better at
4593 disassembling SSE instructions. (thanks to Lutz Euler)
4594 * enhancement: CHECK-TYPE on a variable now allows type-inference
4595 (thanks to Vincent Arkesteijn)
4596 * optimization: improved performance of EUC-JP external format.
4597 (thanks to NIIMI Satoshi)
4598 * optimization: performance improvements to IO on file streams of
4599 :ELEMENT-TYPE CHARACTER
4600 * optimization: much faster memory allocation on x86-64
4601 * optimization: faster garbage collections (latency and throughput)
4603 * optimization: faster bignum subtraction and division on x86 and x86-64
4604 (thanks to Lutz Euler)
4605 * optimization: more accurate type-inference for loops that use a
4606 floating point index variable or a negative step.
4608 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
4609 * bug fix: add a workaround to SBCL looping infinitely at startup on
4610 Linux kernels with apparently buggy implementations of personality().
4611 (thanks to Svein Ove Aas)
4612 * bug fix: Unicode symbols are correctly printed in LDB backtraces
4613 (thanks to David Lichteblau)
4614 * bug fix: local bindings shadow global symbol macros for
4615 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
4616 * optimization: non-open coded uses of numeric comparison operators
4617 (e.g. >) no longer cons when called with more than one parameter
4618 on platforms supporting dynamic-extent allocation.
4619 * enhancement: saving cores with foreign code loaded is now supported
4620 on MIPS/Linux in addition to the previously supported platforms.
4621 * bug fix: FIND-RESTART now tests for activity, not applicability when given
4622 a restart object as identifier. (reported by Helmut Eller for CMUCL)
4623 * bug fix: division by zero in sb-sprof when no samples were collected
4624 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
4625 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
4626 (thanks to Alexander Kjeldaas)
4627 * new feature: ignoring the return values of destructive functions
4628 like NREVERSE signals a compile-time style-warning.
4629 (thanks to Kevin Reid)
4630 * new feature: the alignment of alien structure fields can be
4631 explicitly specified. (thanks to Cyrus Harmon)
4632 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
4633 and dump core on SIGQUIT
4635 ** incompatible change: threads do not inherit values of specials
4636 from their parents (see manual)
4637 ** bug fix: threads stacks belonging to dead threads are freed by the
4638 next exiting thread, no need to gc to collect thread stacks anymore
4639 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
4640 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
4641 ** bug fix: dynamic variable and thread start related gc lossage
4642 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
4644 * fixed some bugs revealed by Paul Dietz' test suite:
4645 ** SUBTYPEP is slightly more accurate on heinously complicated
4646 CONS types where some of the members have uncertain (in the
4647 NIL, NIL sense) type relationships to each other.
4649 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
4650 no longer purified unless :PURIFY T is explicitly specified.
4651 ** Non-purified cores are significantly smaller than before
4653 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
4654 * new feature: timers based on Zach Beane's excellent timer package
4655 * added support for the following external formats: koi8-u,
4656 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
4657 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
4658 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
4659 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
4660 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
4661 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
4662 * incompatible change: a threaded SBCL will no longer revert to
4663 non-threaded mode on non-NPTL systems, but refuse to start entirely.
4664 * bug fix: interrupts are disabled until startup is complete; no
4665 more sigsegvs when receiving a signal to soon
4666 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
4668 * bug fix: add a workaround for the memory randomization features in
4669 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
4670 workaround will only be in effect on systems with the proc filesystem
4672 * bug fix: printing objects of type HASH-TABLE signals a
4673 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
4675 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
4676 have been running for over 50 days. (reported by Gilbert Baumann)
4677 * bug fix: the logic for getting names of functions gets less
4678 confused when confronded with alternate-metaclass
4679 funcallable-instances. (reported by Cyrus Harmon)
4680 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
4681 consistent, even on internal alternate-metaclass objects.
4682 * bug fix: flush closure information collected by physical
4683 environment analysis prepass before the main pass. (bug reported
4685 * bug fix: compiler pack phase does not modify a hashtable, which is
4686 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
4687 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
4688 may be expanded. (reported by Alexander <malishev> on c.l.l)
4689 * bug fix: no more style-warnings when compiling code using LAST
4690 under high-SPEED low-SPACE settings. (reported by David Wallin
4692 * fixed some incompatibilities between SBCL's MOP and the MOP
4694 ** the METAOBJECT class is now implemented;
4695 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
4696 STANDARD-OBJECT, as required;
4697 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
4698 now compatible (as required by VALIDATE-SUPERCLASS); there
4699 remains a consistency requirement over the presence or absence
4700 of the FUNCTION class in the superclass list of finalized
4701 classes; see the manual for more details;
4702 ** the :AROUND method for COMPUTE-SLOTS on
4703 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
4704 requested slot ordering.
4706 ** bug fix: parent thread now can be gc'ed even with a live
4708 ** bug fix: binding a special with PROGV to no value is not
4709 the same as that symbol not having been bound (thanks to
4711 ** bug fix: binding specials is thread safe (thanks to
4713 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
4714 and SB-SPROF do not die with 'no handler for signal XX in
4715 interrupt_handle_now(..)' anymore
4716 ** bug fix: WITH-TIMEOUT works with multiple running threads
4717 * fixed some bugs revealed by Paul Dietz' test suite:
4718 ** ENSURE-GENERIC-FUNCTION should take a method class object for
4719 the :method-class keyword argument.
4721 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
4722 * new port: the Solaris operating system on x86 processors is now
4723 mostly supported, though some rough edges in the environment
4724 remain. (thanks to Daisuke Homma)
4725 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
4726 space for its heap. (thanks to Thiemo Seufer)
4727 * optimization: SBCL on MIPS platforms now supports dynamic-extent
4728 closures. (thanks to Thiemo Seufer)
4729 * minor incompatible change: eof selects abort in the debugger.
4730 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
4731 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
4733 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
4734 deprecated, and will go away in a future revision of SBCL.
4735 * minor incompatible change: GC-ON and GC-OFF are no longer
4736 implemented with a counter, it does not matter how many times gc
4737 is switched on or off
4738 * bug fix: discriminating functions for generic function classes
4739 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
4740 make invalid assumptions about method precedence order. (reported
4742 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
4743 platforms. (thanks to Thiemo Seufer)
4744 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
4745 * bug fix: correct pathname printing with printer escaping is on.
4746 (thanks to Kevin Reid)
4747 * bug fix: complex VOP definitions in "user-space" no longer trigger
4748 package locks. (reported by Zach Beane)
4749 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
4750 for funcallable-instance functions, and is no different from
4752 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
4753 characters in the current readtable. (reported by Nicholas Neuss)
4754 * bug fix: SUBTYPEP on various CONS types returns more a more
4755 accurate acknowledgment of its certainty.
4756 * optimizations: REMOVE-DUPLICATES now runs in linear time on
4757 lists in some cases. This partially fixes bug 384.
4758 * flush all standard streams before prompting in the REPL and the
4760 * bug fix: signal handling and triggering gc do not conflict
4761 directly anymore, in particular a high frequency sb-sprof does
4762 not prevent gc from running
4763 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
4764 approximation for timezone and DST information between the
4765 universal time epoch and the smallest negative 32-bit time_t.
4766 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
4767 year 1899 so long as the encoded time is non-negative.
4768 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
4769 the correct answer for non-constant rotate amounts when performing
4770 an inline 32-bit rotation.
4772 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
4773 there is only one thread in the session
4774 ** bug fix: memory leak for streams created in one thread and
4775 written to in another
4776 ** bug fix: lockup when compiled with gcc4
4777 ** bug fix: race that allows the gc to be triggered when gc is
4779 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
4780 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
4782 ** bug fix: finished threads are gc'ed properly
4783 * fixed some bugs revealed by Paul Dietz' test suite:
4784 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
4785 has arguments with a different set of applicable methods from
4786 the orignal arguments.
4787 ** The type error thrown by MAP now has a correct expected-type
4789 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
4790 name a compiled function.
4791 ** Three MISC tests where a large bignum was improperly coerced to
4792 a float that couldn't represent that bignum during type
4793 derivation were fixed.
4794 ** SUBTYPEP can now handle types involving the negation of a
4795 list-form FUNCTION type.
4796 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
4797 as (COMPLEX (AND RATIO (NOT FIXNUM))).
4798 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
4800 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
4801 * New feature: Experimental support for bivalent streams: streams
4802 opened with :element-type :default now allow character and binary
4803 (unsigned-byte 8) I/O
4804 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
4805 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
4807 * bug fix: no more highly sporadic "couldn't check whether ~S is
4808 readable" when reading a stream and an interrupt hits in the middle
4809 of a select system call
4810 * compiler better recognizes complex arrays (reported by Eduardo
4812 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
4813 for variables on SBCL built with linkage-tables. (reported by Luis
4815 * various error reporting improvements.
4816 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
4817 (Thanks to Thiemo Seufer)
4818 * bug fix: nested reader invokations work correctly
4819 * bug fix: it is possible to have simultaneous references to foreign
4820 code and foreign data with the same name.
4822 ** added x86-64 support
4823 ** incompatible change: the threading api now works with thread
4824 objects instead of thread ids
4825 ** bug fix: threads are protected from signals and interruption when
4826 starting up or going down
4827 ** bug fix: a race where an exiting thread could lose its stack to gc
4828 ** bug fix: don't halt on infinite error in threads if possible
4829 ** fixed numerous gc deadlocks introduced in the pthread merge
4830 ** bug fix: fixed thread safety issues in read and print
4831 ** bug fix: debugger doesn't hang on session lock if interrupted at
4832 an inappropriate moment
4833 ** bug fix: run-program is now thread safe(r)
4834 ** bug fix: inner with-recursive-lock no longer releases the mutex
4835 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4836 * fixed some bugs revealed by Paul Dietz' test suite:
4837 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4838 EXPECTED-TYPE slots filled.
4839 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4841 ** MAKE-CONDITION accepts classes as type-designators.
4842 ** COMPILE may never return NIL.
4843 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4844 range before calling Unix time functions
4846 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4847 * numerous signal handling fixes to increase stability
4848 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4849 * minor incompatible change: we now correctly canonize default
4850 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4851 as per the MOP, rather than the historical (INITARG INITFUNCTION
4852 INITFORM). (reported by Bruno Haible)
4853 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4854 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4855 for more information.
4856 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4857 pathname is a directory pathname.
4858 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4859 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4861 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4862 :METACLASS argument in addition to a class name. (reported by
4863 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4864 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4865 (reported by Bruno Haible; patch from Gerd Moellmann)
4866 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4868 * bug fix: more cleanups to the floating point exception handling on
4869 x86-64 (thanks to James Knight)
4870 * bug fix: the compiler does not try to constant fold calls of
4871 COERCE and BIT-* functions when they return freshly constructed
4872 objects. (reported by Nikodemus Siivola and Paul Dietz)
4873 * optimization: improved the MIPS versions of generic (in the
4874 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4875 * optimization: direct conversion of (unsigned-byte 32) to floats on
4876 the PowerPC platform.
4877 * optimization: structure instances with raw slots now use less
4878 memory, and probably show better memory locality. (thanks to
4880 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4881 are treated as requests for stack allocation on the x86-64,
4882 Alpha-32, PPC and SPARC platforms.
4883 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4884 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4885 (thanks to Tony Martinez)
4887 ** gcing a dead thread can no longer lead to lockups
4888 ** threads block signals until they are set up properly
4889 ** errno is no longer shared by threads
4890 ** interrupt-thread restores the eflags register on x86
4891 ** fixed some lockups due to gc/thread interaction
4892 * fixed some bugs revealed by Paul Dietz' test suite:
4893 ** invalid dotted lists no longer raise a read error when
4894 *READ-SUPPRESS* is T
4895 ** signal an error if a symbol that names a declaration is used
4896 as the name of a type, or vice versa
4897 ** allow using the (declare (typespec var*)) abbreviation for
4898 (declare (type typespec var*)) with all type specifiers
4899 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4900 ** always return NIL from PPRINT-POP when OBJECT is NIL
4901 ** don't signal errors when pretty-printing malformed LABELS,
4902 FLET or MACROLET forms
4903 ** declarations in a DOLIST body are also in scope for the
4905 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4907 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4910 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4911 * fixed cross-compiler leakages that prevented building a 32-bit
4912 target with a 64-bit host compiler.
4913 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4914 opened with :IF-EXISTS :OVERWRITE.
4915 * fixed bug 281: error for an invalid qualifier in a short-form method
4916 combination method is not signalled until the faulty method is called.
4917 * bug fix: iteration variable type inferrer failed to deal with open
4918 intervals. (reported by Alan Shields)
4919 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4920 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4921 or more runtime options were provided to the sbcl binary.
4922 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4923 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4924 * optimization: there's now a fast-path for fixnum arguments in the
4925 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4926 * optimization: the code generated on x86-64 is more compact thanks
4927 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4928 * bug fix: floating-point exception handling now partly works on
4929 x86-64. (Thanks to James Knight)
4930 * improvement to the MIPS backend from Thiemo Seufer: C-style
4931 64-bit long long arguments and return values to alien functions
4933 * fixed some bugs revealed by Paul Dietz' test suite:
4934 ** the type-error signalled from WARN has a filled-in DATUM slot.
4935 ** the type-error required when a stream is not associated with
4936 a file has the stream as its datum.
4937 ** type-errors on single-floats on x86-64 no longer have
4938 :INVALID-OBJECT as the datum
4939 ** the type-errors signalled for invalid function names now have
4940 a correct expected type
4941 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4942 for structures defined with a :TYPE. Documentation strings for
4943 typed structures are no longer immediately discarded
4944 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4945 broadcast streams and synonym streams. FILE-LENGTH now also works
4946 on broadcast streams.
4948 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4949 * incompatible change: the --noprogrammer option, deprecated since
4950 version 0.7.5, has been removed. Please use the equivalent
4951 --disable-debugger option instead.
4952 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4954 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4955 inoperational for a while now) has been completely removed.
4956 * null lexical environments are now printed as #<NULL-LEXENV>,
4957 significantly reducing the amount of clutter in typical backtraces.
4958 * documentation on weak pointers, finalization, and after GC hooks
4959 has been added to the manual.
4960 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4961 as other specialized array types, is much faster. SUBSEQ and
4962 COPY-SEQ on such arrays have also been sped up.
4963 * optimization: EQL is now more efficient when at least other argument
4964 is known to be of type (OR FIXNUM (NOT NUMBER)).
4965 * fixed bug: the runtime is now less vulnerable to changes in the
4966 size of the SBCL object on OS X, and virtual memory is reserved for
4967 all spaces that need to be at a fixed address.
4968 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4969 * fixed bug: finalizers and after GC hooks that cause consing are now
4971 * fixed bug: compiler error messages and summaries are now printed to
4972 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4973 * fixed inference of the upper bound of an iteration variable.
4974 (reported by Rajat Datta).
4975 * fixed bug 211e: calling local functions with duplicated constant
4976 keyword argument no longer causes a bogus style warning about an
4978 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4979 ftype declaration to be disregarded. (reported by Dave Roberts)
4980 * fixed bug 373: caused by erronous compilation of references to alien
4981 variables in the runtime on ppc/darwin.
4982 * fixed bug 376: CONJUGATE type deriver.
4983 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4984 (reported by Baughn on #lisp)
4985 * a cross-compiler bug on non-x86 platforms has been identified and
4986 fixed. (thanks to Bruno Haible)
4987 * improvements to the MIPS runtime code for increased stability.
4988 (thanks to Thiemo Seufer)
4989 * increased the maximimum compact environment size to allow
4990 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4991 * partial workaround for bug 135: don't name the function we're
4992 calling for hairy cases of EVAL, so as not to accumulate one environment
4993 entry per call to EVAL. (reported by Kevin Reid)
4994 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4995 * optimization: type testing for non-vector arrays should be faster.
4996 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4998 * bug fix: setting 31st element of a bit vector to zero did not work
5000 * bug fix: redefining a class definition which failed due to a
5001 previous accessor / function clash now works (but see BUGS entry
5002 #380 for more problems in this area). (thanks to Zach Beane)
5003 * the long form of DEFINE-METHOD-COMBINATION disables method group
5004 checking when given a single method group with pattern *. (thanks
5006 * on x86 compiler supports stack allocation of results of simple
5007 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
5008 * support for building and running on Mac OS X 10.4 "Tiger" has been added
5009 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
5010 * fixed some bugs related to Unicode integration:
5011 ** the restarts for recovering from input and output encoding
5012 errors only appear when there is in fact such an error to
5014 * fixed some bugs revealed by Paul Dietz' test suite:
5015 ** MISC.549 and similar: late transformation of unsafe type
5016 assertions into derived types caused unexpected code
5018 ** SCALE-FLOAT type deriver is less wrong.
5019 ** type derivers for EXP, LOG and similar functions compute result
5020 types for complex arguments better.
5021 ** (MISC.563) CONJUGATE type deriver works for very restricted
5023 ** out-of-line type testers for character strings are available.
5024 ** EQUAL compiler transform understands specialness of objects
5026 ** accessing double-floats stored on the stack now works on x86-64.
5027 ** debugger internals could sometimes create invalid lispobjs,
5028 resulting in GC crashes.
5029 ** MISC.548: type check weakening can convert required type into
5031 ** initialization forms for bindings are not in scope of free special
5034 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
5035 * incompatible change: thread support for non-NPTL systems has
5036 been removed - locking is buggy and unreliable. A threaded
5037 SBCL build will now warn at startup and refuse to create
5038 new threads, unless futex support is detected in the kernel
5039 * incompatible change: the top level REPL now has only an ABORT
5040 restart associated with it, not TOPLEVEL and ABORT as it used to.
5041 TOP and TOPLEVEL are now available as debugger commands for
5042 returning to the top level.
5043 * incompatible change: forms evaluated in the REPL now use the
5044 global optimization policy.
5045 * incompatible change: user- and system-initialization files are
5046 no longer processed with LOAD, but by READ and EVAL; hence the
5047 global optimization policy, startup package, readtable, etc,
5049 * The .fasl file format number has been incremented because of
5050 various incompatible changes.
5051 * internal entry point details and argument counts no longer appear
5052 in backtraces unless explicitly requested by setting
5053 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
5054 * built-in and standard functions no longer have names like "top
5055 level local call to FOO".
5056 * fixed bug 32: functions defined in non-null lexical environments
5057 now have more legible printed representation
5058 * fixed bug 33: functions defined in non-null lexical environemnts
5059 are now more amenable to inspection by INSPECT.
5060 * workaround for bug 354: XEPs no longer appear in backtraces unless
5061 explicitly requested.
5062 * fixed bug: receiving the signal which results from attempting to
5063 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
5064 SIGBUS on other *BSDs) on architectures where the C stack is also
5065 the Lisp stack (x86 and x86-64) from foreign code no longer leads
5066 to debugger confusion or wild instability. (reported by Cheuksan
5068 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
5069 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
5070 (reported by Lutz Euler)
5071 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
5072 compiled code. (reported by Paul Dietz)
5073 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
5074 specialized parameter to a method to something that is not TYPEP
5075 the specializer is now possible.
5076 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
5077 face of package deletion.
5078 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
5079 pathname. (reported by David Tolpin on c.l.l)
5080 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
5081 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
5082 STRING-STREAM and FILE-STREAM, respectively.
5083 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
5084 than previously; in addition, its test suite is now run on build.
5085 (thanks to Luke Gorrie)
5086 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
5087 * optimization: added a immediate representation for single-floats
5089 * fixed some bugs revealed by Paul Dietz' test suite:
5090 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
5091 ** attempting to create a package with a colliding nickname causes
5092 correctable errors to be signalled.
5093 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
5094 ** several x86-64 backend bugs related to sign-extension of immediate
5097 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
5098 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
5099 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
5101 * fixed loading of multiply forward-referenced layouts.
5102 (thanks to Cheuksan Wang)
5103 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
5104 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
5105 (see COMPILE-FILE documentation for details of :PRINT option)
5106 * fixed bugs 19 and 317: fixed-format floating point printing is
5107 more accurate. This also fixes a bug reported by Adam Warner
5108 related to the ~@F format directive.
5109 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
5111 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
5112 dispatch table if the from-char is a dispatch macro character.
5113 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
5114 by the wordsize no longer ignore the last word. (reported by Lutz
5116 * fixed bug in type checking of dynamic-extent variables. (reported
5118 * optimization: sequence traversal functions use their freedom to
5119 coerce function designators to functions.
5120 * optimization: code with many calls to CLOS methods specialized on
5121 CLOS classes has had redundant type checks removed.
5122 * optimization: added declarations to speed up operations that access
5123 the internal character database (for example STRING-UPCASE)
5124 * optimization: comparison operations between floats and sufficiently small
5125 fixnums no longer create extra rationals
5126 * fixed some bugs related to Unicode integration:
5127 ** portions of multibyte characters at the end of buffers for
5128 character-based file input are correctly transferred to the
5129 start of the buffer at the next read.
5130 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
5131 passing it through to OPEN.
5132 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
5133 argument given to internal calls to OPEN.
5134 ** the built-in comment readers (introduced by character sequences
5135 ";" and "#|") are more forgiving to encoding errors; they will
5136 STYLE-WARN and then attempt to resync the stream at a character
5137 boundary. (thanks to Teemu Kalvas)
5138 * fixed some bugs in the x86-64 port:
5139 ** Negative short int return values from c-calls are sign-extended
5141 ** The stack is aligned to 16-bytes for c-calls, as required by
5142 the ABI. (thanks to Cheuksan Wang)
5143 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
5144 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
5145 for enums. (thanks to Vincent Arkesteijn)
5146 ** Multiple small optimizations and bugfixes for floating point
5148 * fixed some bugs revealed by Paul Dietz' test suite:
5149 ** Space, Tab, Linefeed, Return and Page have the invalid
5150 secondary constituent character trait.
5151 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
5153 ** WITH-INPUT-FROM-STRING should only update the index place on
5155 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
5156 works more reliably.
5157 ** Bit-array operations (BIT-AND and similar) worked incorrectly
5158 with one-dimensional arrays with fill pointers.
5159 ** TYPE-OF failed on a complex with an integer realpart and a
5161 ** compiler failure during type inference for the code of form
5162 (IF (EQL X (THE ...)) ...) (MISC.535).
5164 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
5165 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
5166 platform. The port supports 61-bit fixnums, large memory spaces
5167 and reloading shared object files.
5168 * enhancement: saving cores with foreign code loaded is now
5169 supported on ppc/Darwin in addition to the previously supported
5171 * enhancement: the statistical profiler now walks deeper into the
5172 call stack for more meaningful call-graphs and accrued time
5173 reports (x86/x86-64 only). It also now reports time spent in
5175 * enhancement: it is now possible to trace most individual methods
5176 of a generic function in addition to tracing the generic function
5178 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
5180 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
5181 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
5182 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
5183 produces an error. (thanks to Vincent Arkesteijn)
5184 * bug fix: NAMESTRING on pathnames with :WILD components in their
5185 directories works correctly. (thanks to Artem V. Andreev)
5186 * fixed bug 125: compiler preserves identity of closures. (reported
5188 * bug fixed: functions with &REST arguments sometimes failed with
5189 "Undefined function" when compiled with (DEBUG 3). (reported by
5191 * bug fix: overflow during compiling of setting element of a bit
5192 vector with constant index and value. (reported by Timmy Douglas)
5193 * build fix: fixed the dependence on *LOAD-PATHNAME* and
5194 *COMPILE-FILE-PATHNAME* being absolute pathnames.
5195 * on x86 compiler partially supports stack allocation of dynamic-extent
5197 * GO and RETURN-FROM do not check the extent of their exit points
5198 when compiled with SAFETY 0.
5199 * fixed some bugs related to Unicode integration:
5200 ** encoding and decoding errors are now much more robustly
5201 handled; it should now be possible to recover even from invalid
5202 input or output to the terminal. (thanks to Teemu Kalvas)
5203 ** provided a first cut at implementing STRING-TO-OCTETS and
5204 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
5205 ** altered the SB-MD5 contributed module slightly, changing the
5206 interface just enough for it to be supportable for builds where
5207 lisp characters are not eight bits.
5208 * fixed some bugs revealed by Paul Dietz' test suite:
5209 ** the FORMATTER-generated functions for ~V[ conditionals require
5210 the correct number of arguments.
5211 ** READ-FROM-STRING returns the mandated second value when applied
5212 to displaced strings.
5213 ** the #\Rubout and #\Backspace characters are treated as invalid
5214 constituent characters by the tokenizer.
5216 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
5217 * new feature: reloading changed shared object files with
5218 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
5219 * new feature: references to foreign variables and functions
5220 can now be compiled and loaded before the corresponding shared
5221 object file is loaded, as long as the foreign definitions are
5222 available at runtime.
5223 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
5224 supported. (thanks to Dan Debertin)
5225 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
5226 just keywords. (thanks to Vincent Arkesteijn)
5227 * fixed bug #331: structure-class instances corresponding to
5228 DEFSTRUCT forms are now created eagerly.
5229 * fixed bug #345: backtraces from calls to undefined functions work
5230 on x86 as well. Related bug #61 is now also partially fixed on x86
5231 (backtraces from throws to unknown catch tags.)
5232 * bug fix: lambda-list parsing is now stricter vrt. order and number
5233 of lambda-list keywords.
5234 * bug fix: as specified by AMOP, an error is signalled if a
5235 class-option appears multiple times in a DEFCLASS form. (reported
5237 * bug fix: RANDOM can be compiled when the compiler derives the type
5238 of its numeric argument as a disjoint set of small integers.
5239 (reported by Paul Dietz)
5240 * bug fix: starting a core saved with shared objects loaded when
5241 those objects are not available no longer causes threaded SBCL to
5242 hang. (reported by Sean Ross)
5243 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
5245 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
5246 argument, which must always be NIL. (reported by Kalle Niemitalo)
5247 * bug fix: printing 1.0d+23 no longer results in an error.
5248 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
5249 * bug fix: structure slot setters preserve evaluation order. (thanks
5251 * fixed some bugs related to Unicode integration:
5252 ** RUN-PROGRAM can allow its child to take input from a Lisp
5253 stream. (reported by Stefan Scholl)
5254 ** ASDF-INSTALL successfully downloads .tar.gz files in all
5255 locales. (reported by Ken Causey)
5256 * fixed some bugs revealed by Paul Dietz' test suite:
5257 ** INCF, DECF and REMF evaluate their place form as specified in
5259 ** FORMATTER expands ~{ ~} iteration directives with V or #
5260 parameters correctly.
5261 ** FORMATTER deals with the ~@[ ~] conditional directive where the
5262 consequent uses no arguments correctly.
5263 ** the system has a partial understanding of the (COMPLEX RATIO)
5265 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
5268 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
5269 * new feature: a build-time option (controlled by the :SB-UNICODE
5270 keyword feature, enabled by default) for building the system with
5271 support for the entire 21-bit character space defined by the
5273 * new feature: the system now has rudimentary external-format
5274 support; the primary user-visible change at this time is that
5275 characters with the high bit set (such as lower-case-e-acute) will
5276 print correctly to a terminal in a UTF-8 environment.
5277 * minor incompatible change: BASE-CHAR no longer names a class;
5278 however, CHARACTER continues to do so, as required by ANSI.
5279 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
5280 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
5281 has been moved to the SB-EXT package (temporarily re-exported from
5283 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
5284 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
5286 * fixed bug #351: better error-handlind and reporting for malformed
5288 * fixed bug #350: bignum-printing is now more memory-efficient,
5289 allowing printing of very large bignums, eg. (expt 2 10000000).
5290 (reported by Bruno Haible)
5291 * fixed bug #302: better primitive-type selection for intersection
5293 * fixed bug #308: non-graphic characters now all have names, as
5294 required. (reported by Bruno Haible)
5295 * bug fix: redefining a class with different superclasses now correctly
5296 removes it from the direct-subclasses of its previous superclasses.
5297 (reported by David Morse)
5298 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
5299 new value now works. (reported by Bruno Haible)
5300 * bug fix: correct canonicalization of multiple non-standard slot
5301 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
5302 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
5303 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
5304 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
5305 now exists, an signals an error.
5306 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
5307 during macroexpansion for non-iteration variables as well. (reported
5308 by Bruno Haible for CMUCL)
5309 * bug fix: Cyclic structures and unprintable objects in compiler
5310 messages no longer cause errors. (reported by Bruno Haible)
5311 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
5312 and READ-FROM-STRING all now return a primary value of NIL if
5313 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
5314 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
5315 (reported by Bruno Haible for CMUCL)
5316 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
5317 do not designate a condition. (reported by Bruno Haible for
5319 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
5320 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
5321 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
5322 permitting resolution in favour of any of the conflicting symbols.
5323 (reported by Bruno Haible for CMUCL)
5324 * bug fix: EQUAL compiler optimizations is less aggressive on
5325 strings which can potentially compare true despite having distinct
5326 specialized array element types.
5327 * bug fix: unit enumerations can be defined without dividing by
5328 zero. (thanks to Vincent Arkesteijn)
5329 * FORMAT compile-time argument count checking has been enhanced.
5330 (report from Bruno Haible for CMUCL)
5331 * a partial workaround for the bug 262: the compiler does not try to
5332 inline-expand a local function doing RETURN-FROM from a deleted
5333 BLOCK. (thanks to Peter Denno for the bug report and to David
5334 Wragg for the simple test case)
5335 * fixed some bugs revealed by Paul Dietz' test suite:
5336 ** RENAME-PACKAGE allows all package designators as new package
5338 ** constraint propagation and lambda variable substitution are
5339 more cautious in dealing with partially deleted code.
5340 ** compiler sometimes lost reoptimization passes.
5341 ** CERROR, given a condition as condition designator, passes its
5342 remaining arguments to the continue format control without
5344 ** Case-altering FORMAT directives work correctly on non-ASCII
5346 ** The REAL type specifier handles bounds outside the floating
5347 point ranges without signalling FLOATING-POINT-OVERFLOW.
5348 ** Functions with IR1-transformations can create intercomponent
5349 references to global functions.
5350 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
5352 ** FORMAT ~R treats a nil value for its first parameter correctly.
5354 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
5355 * enhancement: saving cores with foreign code loaded is now
5356 supported on x86/NetBSD and sparc/Linux in addition to the previously
5357 supported platforms.
5358 * bug fix: on some platforms repeated installations caused multiple
5359 copies of HTML documentation to be installed -- should not happen
5360 any more. (reported by Stefan Scholl)
5361 * bug fix: parsing self-recursive alien record types multiple times
5362 no longer causes infinite recursion. (reported by Thomas F. Burdick,
5363 original patch by Helmut Eller for CMUCL)
5364 * bug fix: stack-exhaustion detection works now on NetBSD as well.
5365 (thanks to Richard Kreuter)
5366 * bug fix: defining classes whose accessors are methods on existing
5367 generic functions in other (locked) packages no longer signals
5368 bogus package lock violations. (reported by François-René Rideau)
5369 * bug fix: special variables as DEFMETHOD parameters no longer have
5370 associated bogus type declarations. (reported by David Wragg and
5372 * bug fix: read-write consistency on streams of element-type
5373 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
5374 * bug fix: redefiniton of the only method of a generic function with
5375 no DEFGENERIC no longer emits a full WARNING. In addition,
5376 redefinition of generic functions with no DEFGENERIC to an
5377 incompatible lambda list now signals an error. (thanks to Zach
5379 * bug fix: DEFGENERIC now works even when there's a function of the
5380 same name in an enclosing lexical environment. (thanks to Zach
5382 * fixed compiler failure, caused by instrumenting code during
5383 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
5384 * optimization: added loop analysis and improved register allocation
5385 * fixed some bugs revealed by Paul Dietz' test suite:
5386 ** POSITION on displaced vectors with non-zero displacement
5387 returns the right answer.
5388 ** (SIMPLE-STRING) is a valid type specifier for sequence
5390 ** *PRINT-LEVEL* handling for slotless structures is pedantically
5392 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
5393 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
5395 ** The justification version of the FORMAT ~< directive treats
5396 non-zero minpad parameter correctly.
5398 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
5399 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
5400 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
5401 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
5402 the supported interface.
5403 * new feature: Single-stepping of code compiled with DEBUG 2 or
5404 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
5405 * new feature: saving cores with foreign code loaded is now
5406 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
5407 Timothy Moore's work for CMUCL)
5408 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
5409 parameters to * instead of NIL if no initform is supplied.
5410 (reported by Johan Bockgaard)
5411 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
5412 correctly when FUNCALL appears as the car of the form. Note:
5413 despite this FUNCALL forms are not currently subject to
5414 compiler-macro expansion. (port of Raymond Toy's fix for the
5415 same from CMUCL, reported by Johan Bockgaard)
5416 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
5417 (thanks for Teemu Kalvas)
5418 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
5419 case instead of terminating the iteration (thanks for Julian
5420 Squires, Sean Champ and Raymond Toy)
5421 * bug fix: incorrect expansion of defgeneric that caused a style
5422 warning. (thanks for Zach Beane)
5423 * bug fix: slot accessor effective method computation works properly
5424 for classes with multiple non-standard applicable methods on
5425 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
5426 * on x86 compiler supports stack allocation of results of LIST and
5427 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
5428 CMUCL implementation by Gerd Moellmann)
5429 * fixed some bugs revealed by Paul Dietz' test suite:
5430 ** FORMAT strings with both the ~<~:;~> form of the justification
5431 directive and pretty-printing directives cause an error.
5433 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
5434 * incompatible change: the internal functions
5435 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
5436 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
5437 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
5438 instead of the old functions.
5439 * new feature: on platforms where "dladdr" is available foreign
5440 function names now appear in backtraces. (based on Helmut Eller's
5442 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
5443 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
5445 * documentation: ASDF manual is now distributed with SBCL.
5446 * bug fix: SBCL can now load its contributed modules with REQUIRE
5447 even if the system-provided entries have been removed from
5448 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
5450 * bug fix: backtraces involving undefined functions or assembly
5451 routines are more informative. (thanks to Brian Downing)
5452 * bug fix: mutually referent alien structures now work correctly.
5453 (reported by Rick Taube)
5454 * bug fix: structures defined by WITH-ALIEN can be referred to
5455 within other definitions in the same WITH-ALIEN.
5456 * bug fix: division operators (MOD, TRUNCATE and the like) with
5457 constant zero divisors and integer dividends no longer generate
5459 * bug fix: provide default methods for INPUT-STREAM-P and
5460 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
5461 * bug fix: improve the detection and resolution of MOP metacycles
5462 (where effective method computation depends on the generic function
5463 having its effective method computed). (reported by Bruno Haible)
5464 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
5465 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
5466 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
5467 * bug fix: pathnames with relative directory components can be
5468 represented relative to default pathnames.
5469 * optimization: in taking the GCD of bignums, reduce the two bignums
5470 to approximately the same size (using Euclid's algorithm) before
5471 applying the more sophisticated binary GCD. (thanks to Juho
5473 * optimization: COUNT on bitvectors now operates word-at-a-time.
5474 * optimization: ASH with a positive, but not necessarily constant,
5475 (leftwards) shift, when in a modular context, is compiled to a
5477 * fixed some bugs revealed by Paul Dietz' test suite:
5478 ** FORMAT variable parameters ("~V<char>") are defaulted properly
5479 if the corresponding argument is NIL.
5480 ** FORMAT directives accepting a minpad parameter treat negative
5482 ** literal commas as character parameters to FORMAT directives are
5484 ** literal spaces directly after ~<Newline> directives within a
5485 format-logical-block (~:< ~@:>) do not induce :FILL-style
5486 conditional newlines.
5487 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
5488 as specified: it no longer includes conditional newlines).
5489 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
5491 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
5492 :PER-LINE-PREFIX argument does not evaluate to a string.
5494 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
5495 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
5496 the manual for details; for now, package locks can be disabled by
5497 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
5498 if no major problems are found then it is likely that they will be
5499 compiled in unconditionally.
5500 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
5501 unsupported operators on all platforms. To load a shared library
5502 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
5503 object file, link it into a shared library outside of SBCL and
5504 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
5506 * bug workaround: ROOM T and the GC were not working together
5507 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
5508 reporting facility aren't preserved. That reporting has been
5509 disabled, so now until and unless someone figures out how to make it
5510 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
5511 * minor incompatible change: as threatened around sbcl-0.8.0, the
5512 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
5513 The symbols are also exported from SB-PCL for backwards
5514 compatibility, but more so than before SB-PCL should be treated as
5515 an implementation-internal package.
5516 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
5518 * the SB-SPROF contrib now works on (most) non-x86 architectures.
5519 It is known as of this release not to work on the Alpha, however.
5520 * fixed bug #167: errors signalled due to illegal syntax in method
5521 bodies are now more legible.
5522 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
5523 designators and can hence be used with TYPEP.
5524 * fixed bug #333: CHECK-TYPE now ensures that the type error
5525 signalled, if any, has the right object to be accessed by
5526 TYPE-ERROR-DATUM. (reported by Tony Martinez)
5527 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
5528 5.1.2.3 for multiple-value place subforms. (reported by Kalle
5530 * fixed bug #334: programmatic addition of slots using specialized
5531 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
5532 and :ALLOCATION :CLASS slots.
5533 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
5534 float exponents. (rereported by Peter Seibel)
5535 * fixed a bug: #\Space (and other whitespace characters) are no
5536 longer considered to be macro characters in standard syntax by
5537 GET-MACRO-CHARACTER.
5538 * fixed bug: initialization of condition class metaobjects no longer
5539 causes an instance of the condition to be created. (reported by
5541 * fixed bug: it is now possible to have slots such that
5542 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
5543 description is neither :INSTANCE nor :CLASS.
5544 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
5545 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
5546 SLOT-VALUE-USING-CLASS), and no longer causes errors with
5547 non-standard SLOT-DEFINITION-ALLOCATION values.
5548 * fixed bugs: various race conditions handling exiting threads.
5549 CL-PPCRE's thread torture test now passes.
5550 * fixed arguably-a-bug: GC time proportional to number of threads in
5551 system even when most of them are idle
5552 * optimization: improved performance of BIT and SBIT on bit-vectors.
5553 * .fasl file incompatibility: The fasl file version number has
5554 been incremented because of changes associated with package locks.
5556 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
5557 * minor incompatible change: the system no longer provides
5558 optimization hints (conditions which are TYPEP
5559 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
5560 mode; these hints are still emitted when higher SPEED optimization
5562 * new contrib module: a sampling profiler (profiling by statistical
5563 sampling, rather than by instrumenting functions) is available as
5564 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
5565 * the behaviour of the standard function ED is now customizeable by
5566 third parties through a hook variable: see ED's documentation
5567 string for information on the protocol.
5568 * the compiler no longer emits efficiency notes for (FUNCALL X)
5569 when the type of X is uncertain under default optimization
5571 * fixed bug 276: mutating a binding of a specialized parameter to a
5572 method to something that is not TYPEP the specializer is now
5574 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
5575 exhibit the required behaviour on the x86 platform. (thanks to
5576 Peter van Eynde, Eric Marsden and Bruno Haible)
5577 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
5578 even for difficult arguments. (reported by Peter Graves)
5579 * fixed bug 141a: the backquote printer now descends quoted
5581 * fixed another bug in backquote printing: no more destructive
5582 modification of the form's list structure. (reported by Brian
5584 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
5585 move between its address being taken and the call to
5586 interrupt_thread, fixing a crashing race condition.
5587 * the SB-POSIX contrib implementation has been adjusted so that it
5588 no longer exhibits ridiculously poor performance when constructing
5589 instances corresponding to C structs.
5591 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
5592 * minor incompatible change: the sb-grovel contrib now treats C
5593 structures as alien (in the sense of SB-ALIEN) objects rather than
5594 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
5595 has implications for memory management of client code
5596 (sb-grovel-returned objects must now be manually managed) and for
5597 type safety (alien objects now have full types).
5598 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
5599 used to control emission of compiler diagnostics, rather than the
5600 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
5601 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
5602 quality should be considered deprecated.
5603 * install.sh now installs the user manual as well
5604 * (not quite a new documentable feature, but worth considering in
5605 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
5606 beginnings of a semantically meaningful condition hierarchy is
5607 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
5609 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
5610 designator as the defaults argument.
5611 * fixed bug: Displaced arrays whose displaced-to array has become
5612 too small now cause ARRAY-DIMENSION to signal an error, providing
5613 for safer bounds-checking. (reported by Bruno Haible)
5614 * fixed bug: DEFCLASS slot definitions with identical :READER and
5615 :WRITER names now signal a reasonable error. (reported by Thomas
5617 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
5619 * fixed bug: Invalid slot specification errors now print correctly.
5620 (thanks to Zach Beane)
5621 * fixed bug 320: Shared to local slot value transfers in class
5622 redefinitions now happen corrently from superclasses as
5623 well. (reported by Bruno Haible)
5624 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
5626 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
5627 improper lists correctly. (reported by Bruno Haible)
5628 * fixed bug 313: source-transform for <fun-name> was erroneously
5629 applied to a call of a value of a variable with name <fun-name>.
5630 (reported by Antonio Menezes Leitao)
5631 * fixed bug 307: The obsolete instance protocol ensures that
5632 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
5633 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
5634 remove dead unknown-values globs from the middle of the stack.
5635 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
5636 easier to resume long computations after using *BREAK-ON-SIGNALS*
5637 to diagnose and fix failures. (thanks to Nikodemus Siivola)
5638 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
5639 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
5640 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
5641 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
5642 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
5644 * fixed a (fairly theoretical) bug in string printing: if
5645 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
5646 does not have array-element-type equal to the most general string
5648 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
5649 function name. (thanks to Nikodemus Siivola)
5650 * fixed bug: compile-time format string checker failed on
5651 non-closed ~{. (reported by Thomas F Burdick)
5652 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
5653 don't warn on legal loop code involving more than one aggregate
5654 boolean. (thanks to Nikodemus Siivola)
5655 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
5656 in keyword position to MAKE-PACKAGE was not being reported as
5658 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
5659 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
5661 * fixed bugs 280 and 312: the checking for multiple definitions in a
5662 file is less likely to become confused by uses of inline
5664 * fixed bug: the #S reader macro performs the keyword coercion
5665 specified for slot names. (reported by Kalle Niemitalo)
5666 * fixed bug: lambda lists may contain symbols whose names start with
5667 & but are not lambda-list-keywords; their occurrence triggers a
5669 * fixed bug 321: define-method-combination argument lambda lists do
5670 not cause invalid code to be generated when &optional or &aux
5671 variables have default values. (reported by Bruno Haible)
5672 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
5673 have CLOS classes; this appears also to have fixed reported
5674 instability in stack exhaustion detection.
5675 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
5676 MUFFLE-WARNING when no associated restart is present is now
5678 * optimization: rearranged the expansion of various defining macros
5679 so that each expands into only one top-level form in a
5680 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
5682 * optimization: used a previously little-used slot in symbols to
5683 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
5685 * fixed some bugs revealed by Paul Dietz' test suite:
5686 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
5688 ** Fixed an optimization bug related to inheritance of initforms
5689 from local to shared slots.
5690 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
5691 ** CAST optimizer forgot to flush argument derived type.
5692 ** print/read consistency on floats is now orders of magnitude
5693 more likely. (thanks also to Bruno Haible for a similar report
5695 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
5696 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
5697 for objects of type REAL. Make it so.
5698 ** SXHASH is specified (infelicitously) to respect similarity,
5699 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
5700 it so. (thanks to Markus Ziegler)
5701 ** on the Alpha, the compiler succeeds in compiling functions
5702 returning a known number of arguments greater than 63.
5703 ** fixed handling of invalid NIL arguments in keyword position
5705 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
5707 ** provided a readably-printable representation for RANDOM-STATE
5709 ** ensured that pathnames, where they have a namestring, always
5710 print using #P"..." syntax.
5712 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
5713 * Support for the forthcoming 2.0 version of the NetBSD kernel
5714 running on x86 hardware has been added. (thanks to Perry
5715 E. Metzger most immediately, and others for their past work)
5716 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
5717 current release version; SBCL's OpenBSD support had been broken
5718 since about the time of OpenBSD's switch to ELF binary format.)
5719 * [placeholder for DX summary]
5720 ** user code with &REST lists declared dynamic-extent, under high
5721 speed or space and low safety and debug optimization policy.
5722 * The manual has been converted to Texinfo format and the debugger
5723 chapter from the cmucl manual has been added.
5724 * A facility has been added to extract documentation strings from
5725 sbcl and store them as Texinfo-formatted snippets for inclusion in
5726 the manual (via Texinfo's @include directive)
5727 * bug fix: compiler emitted division in optimized DEREF. (thanks for
5728 the test case to Dave Roberts)
5729 * bug fix: multidimensional simple arrays loaded from FASLs had fill
5730 pointers. (reported by Sean Ross)
5731 * bug fix: PROFILE output is printed nicely even for large numerical
5732 values. (thanks to Zach Beane)
5733 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
5734 greater than 32 handle EOF correctly.
5735 * bug fix: on X86 an immediate argument of the IMUL instruction is
5736 correctly printed in disassembly. (thanks to Lutz Euler)
5737 * bug fix: class slots in redefined classes preserve their old
5738 values. (thanks to Bruno Haible and Nikodemus Siivola)
5739 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
5740 succeeds. (reported by Marco Baringer)
5741 * fixed some bugs revealed by Paul Dietz' test suite:
5742 ** READ-SEQUENCE now works on ECHO-STREAMs.
5743 ** RATIONALIZE works more according to its specification. (thanks
5746 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
5747 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
5748 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
5749 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
5750 should matter to you only if you rebind the printer control
5751 variables and then find you want different bindings in the
5752 debugger than in the ordinary execution of your program.)
5753 * The runtime build system has been tweaked to support building
5754 (on SPARC/SunOS) using a C compiler which invokes Sun's own
5755 assembler and linker. (thanks to Nikodemus Siivola)
5756 * Unbound, undefined, undeclared variables now trigger full
5757 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
5758 more often programmer error than deliberate exploitation of undefined
5760 * optimization: the hash algorithm for strings has changed to one
5761 that is less vulnerable to spurious collisions. (thanks to Juho
5763 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
5764 needless bounds checking. (thanks to Juho Snellman)
5765 * optimization: implemented multiplication as a modular
5766 (UNSIGNED-BYTE 32) operation on the PPC backend.
5767 * fixed some bugs revealed by Paul Dietz' test suite:
5768 ** ADJUST-ARRAY now copies the datum in a zero rank array if
5770 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
5771 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
5772 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
5774 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
5776 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
5778 ** ECHO-STREAMs no longer attempt to echo the end of file value to
5779 their output stream on EOF from read.
5780 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
5781 have been read to end-of-file.
5782 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
5784 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
5785 description of determination of which consecutive characters
5787 ** Printing the "Space" character with escaping on now yields "#\\ ",
5788 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
5789 ** Reading floating-point numbers with *READ-BASE* set to a number
5790 less than 10 works correctly.
5791 ** Reading floating-point numbers with *READ-BASE* set to a number
5792 more than 10 works correctly.
5793 ** Printing with *PRINT-READABLY* targets the standard readtable, not
5794 the readtable currently in effect.
5796 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
5797 * minor incompatible change: parsing of namestrings on a physical
5798 (Unix) host has changed; numbers after the final #\. in a
5799 namestring are no longer interpreted as a version field. This is
5800 intented to be largely invisible to the user, except that the
5801 meaning of the namestring "*.*.*" has changed: it now refers to a
5802 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
5803 should usually be replaced by
5804 (make-pathname :name :wild :type :wild :version :wild)
5805 with the added benefit that this is more likely to be portable.
5806 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
5807 option to OPEN now signals an error if the file being opened
5808 exists; this may have an impact on existing code.
5809 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
5810 signals received, on the PowerPC platforms (both Linux and
5811 Darwin). (thanks to Pierre Mai for pointing out the location of
5813 * several fixes on OS X: The system now builds and runs cleanly on
5814 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
5815 (thanks to Brian Mastenbrook)
5816 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
5817 second-resolution: integer multiples of 1/3600 between -24 and 24.
5818 (thanks to Vincent Arkesteijn)
5819 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
5820 type when called with 1 argument; PEEK-CHAR checked type of
5821 PEEK-TYPE only after having read first character from a
5822 stream. (reported by Peter Graves)
5823 * bug fix: the garbage collector now has much better locality
5824 behaviour, and in particular no longer treats all memory as being
5825 exhausted when many small objects point to each other in a deeply
5827 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
5828 recognized as being TYPEP their class.
5829 * bug fix: the PUSHNEW documentation string has been corrected.
5830 (thanks to Vincent Arkesteijn)
5831 * bug fix: defaulting of the value for the last of an atypically
5832 large number of multiple values being bound was not being
5833 performed correctly on the Alpha or PPC platforms
5834 * optimization: implemented multiplication as a modular
5835 (UNSIGNED-BYTE 32) operation on the x86 backend.
5836 * optimization: SEARCH on simple-base-strings can now be open-coded.
5837 (see also contrib/compiler-extras.lisp for inspiration for
5838 teaching the compiler about the Boyer-Moore algorithm).
5839 * value, returned by MAX (and MIN) called with several EQUALP, but
5840 not EQL, arguments now does not depend on compiler settings.
5841 * fixed some bugs revealed by Paul Dietz' test suite:
5842 ** in stack analysis liveness information is propagated from
5843 non-local entry points.
5844 ** pathwise CAST removing failed when the CAST node did not start
5846 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5847 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5849 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5850 host is already defined.
5851 ** RENAME-FILE works on streams instead of signalling an internal
5853 ** PEEK-CHAR uses the current readtable when determining whether
5854 or not a character is whitespace.
5855 ** MERGE-PATHNAMES handles the case when the pathname does not
5856 specify a name while the default-pathname specifies a version.
5857 ** Pathnames now stand a better chance of respecting print/read
5859 ** Attempting to use standardized file system operators with a
5860 pathname with invalid :DIRECTORY components signals a
5862 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5864 ** DIRECTORY on logical pathnames is more correct.
5865 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5866 signal a TYPE-ERROR if their argument is not a stream.
5867 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5868 designator argument does not designate a stream.
5869 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5870 examining the synonym.
5871 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5873 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5874 element-type larger than ([UN]SIGNED-BYTE 32).
5876 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5877 * When built with the :SB-FUTEX feature, threaded builds now take
5878 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5879 for faster/more reliable mutex and condition variable support.
5880 * Incompatible change (but one you probably shouldn't have been using
5881 anyway): the interface and code for arbitrating between multiple
5882 threads in the same user session has been redesigned.
5883 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5884 error when called without an explicit environment argument.
5885 (thanks to Nikodemus Siivola)
5886 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5887 confused about their position. (thanks to Adam Warner and Gerd
5889 * bug fix: Pretty printing backquoted forms with unquotations in the
5890 argument list position of various code constructs such as LAMBDA
5891 now works correctly. (reported by Paul Dietz)
5892 * bug fix: Pretty printing unquotations no longer loses all
5893 stream position information.
5894 * optimization: performance of string output streams is now less
5895 poor for multiple small sequence writes.
5896 * optimization: performance of CSUBTYPEP in the presence of complex
5897 expressions involving CONS and NOT many times has been improved.
5898 (reported by Paul Dietz)
5899 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5901 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5902 streams for the REPL, for the debugger, and so on. (thanks to
5904 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5905 * fixed some bugs revealed by Paul Dietz' test suite:
5906 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5907 is ignored if it is too small, rather than propagating through
5908 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5909 ** extremely complex negations of CONS types were not being
5910 sufficiently canonicalized, leading to inconsistencies in
5912 ** VALUES tranformer lost derived type.
5914 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5915 * fixed a bootstrapping bug: the build process no longer assumes
5916 that the various BOOLE-related constants have the same value in
5917 host and target lisps. (noted by Paul Dietz' test suite on an
5918 SBCL binary built from CLISP)
5919 * The system can now be dynamically linked on the MIPS platform,
5920 which enables dynamic loading of foreign code from Lisp. (thanks
5921 to Ralf Baechle for discussions on the MIPS ABI)
5922 * The system now records debugging information for its own source
5923 files in a filesystem-position-independent manner, relative to
5924 the "SYS" logical host.
5925 * fixed a compiler bug: MV-LET convertion did not check references
5926 to the "max args" entry point. (reported by Brian Downing)
5927 * tweaked disassembly notes to be less confident about proclaiming
5928 some instruction as an LRA. (thanks to Brian Downing)
5929 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5930 now each have their own history, command character, and other
5931 characteristics. (thanks to David Lichteblau)
5932 * fixed some bugs revealed by Paul Dietz' test suite:
5933 ** compiler failure in compiling LOGAND expressions including a
5935 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5936 shift greater than 32.
5937 ** FLUSH-DEST did not mark blocks for type check regeneration.
5938 ** HANDLER-CASE failed to accept declarations in handler clauses
5939 in some circumstances.
5941 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5942 * New code in contrib/sb-introspect (still probably not entirely
5943 stable yet) provides some support for smart Lisp development
5944 environments like SLIME.
5945 * The conditions signalled for errors occurring when loading .fasl
5946 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5947 in a way which should help ASDF recover gracefully.
5948 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5949 stuff has been cleaned up. If you code contrib/ stuff, this might
5950 affect you, and you can look at contrib/README, contrib/STANDARDS,
5951 and/or the 0.8.4.27 diff to check.
5952 * In full calls the compiler now does not generate checks for declared
5953 argument types for all arguments.
5954 * various threading fixes
5955 ** and some experimental patches which didn't make it into
5956 the main tree for this release, but which are shipped in
5957 contrib/experimental-thread.patch as a possible fix for some
5958 failures (deadlock, spinning...) in GC-intensive multithreaded
5960 * fixed PPC build problem (source code incompatibility of different
5961 library versions): added offsetof() hackery which attempts to divine
5962 where glibc maintainers put uc_mcontext today
5963 * fixed bug 282: compiler does not trust type assertions while passing
5964 arguments to a full call.
5965 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5966 &OPTIONAL VALUES type parameter.
5967 * fix bug 214: algorithm for noting rejected templates is now more
5968 similar to that of template seletion. (also reported by rydis on
5970 * fixed bug 141b: printing backquoted information readably and prettily
5971 inserts a space where necessary.
5972 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5973 (CHARACTER 10) are now reported as errors, rather than propagated
5974 as unknown types. (reported by piso on #lisp)
5975 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5976 with values NIL and :ERROR. (thanks to Milan Zamazal)
5977 * fixed bug 191c: CLOS now does proper keyword argument checking as
5978 described in CLHS 7.6.5 and 7.6.5.1.
5979 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5980 longer raise an error; further, using a list as a for-as-arithmetic
5981 counter now raises a meaningful error.
5982 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5983 now understood by sequence creation functions such as MAKE-SEQUENCE
5985 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5986 a STRING-INPUT-STREAM.
5987 * compiler enhancement: SIGNUM is now better able to derive the type
5989 * type declarations inside WITH-SLOTS are checked. (reported by
5991 * fixed some bugs revealed by Paul Dietz' test suite:
5992 ** incorrect optimization of TRUNCATE for a positive first
5993 argument and negative second.
5994 ** compiler failure in let-convertion during flushing dead code.
5995 ** compiler failure while deriving type of TRUNCATE on an
5996 interval, containing 0.
5997 ** ASH of a negative bignum by a negative bignum count now returns
5999 ** intersection of CONS types now canonicalizes properly, fixing
6000 inconsistencies in SUBTYPEP.
6002 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
6003 * incompatible change: The --disable-debugger command line
6004 option now clobbers the debugger at a more fundamental
6005 level, by redefining #'INVOKE-DEBUGGER instead of by
6006 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
6007 is specified by ANSI to ignore *DEBUGGER-HOOK* and
6008 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
6009 enter the debugger REPL and then suffer recursive errors
6010 because *DEBUG-IO* is also messed up in --disable-debugger mode;
6011 while under the new system, BREAK in --disable-debugger mode
6012 terminates the system just as an unhandled error would.
6013 * fixed compiler performance when processing loops with a step >1;
6014 * bug fix: DOCUMENTATION now retrieves generic function
6015 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
6016 support has been systematized, and now supports the methods
6017 specified by ANSI, along with a default method and a method for
6018 slot documentation. (reported by Nathan Froyd)
6019 * bug fix: effective methods associated with a generic function are
6020 no longer cached over a change of that generic function's method
6021 combination. (reported by Andreas Fuchs)
6022 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
6023 names a non-existent directory. (thanks to Andreas Fuchs)
6024 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
6025 the PPC platform, lead to stack corruption; this has been fixed.
6026 (reported by Rainer Joswig)
6027 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
6028 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
6029 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
6030 arithmetic in general, is now much more reliable on the PPC
6032 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
6033 platform now returns the right answer.
6034 * optimization: restored some effective method precomputation in
6035 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
6036 precomputation is now tunable.
6037 * optimization: compiler-internal data structure use has been
6038 reviewed, and changes have been made that should improve the
6039 performance of the compiler by about 20%.
6040 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
6041 simple-base-strings and simple-bit-vectors is improved.
6042 * optimization: the optimization of 32-bit logical and arithmetic
6043 functions introduced in version 0.8.3 on the x86 has been
6044 implemented on the mips, ppc and sparc platforms; an
6045 implementation of the same facility, but for 64-bit arithmetic,
6046 has been added for the alpha.
6047 * microoptimization: the compiler is better able to make use of the
6048 x86 LEA instruction for multiplication by constants.
6049 * bug fix: in some situations compiler did not report usage of
6050 generic arithmetic in (SPEED 3) policy.
6051 * bug 145b fix: compiler used wrong type specifier while converting
6052 MEMBER-types to numeric.
6053 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
6055 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
6056 index argument now works properly on the Alpha platform.
6057 * bug fix: floating point exception treatment on the Alpha platform
6059 * bug fix: FILE-POSITION works much better on string input and
6060 output streams. (thanks to Nikodemus Siivola)
6061 * bug fix: many threading/garbage collection symptoms sorted.
6062 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
6063 might be pseudo-atomic.
6064 * internal change: Stopping for GC is now done with signals not
6065 ptrace. GC is now done in whichever thread wanted it, instead of
6067 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
6069 * bug fix: result form in DO is not contained in the implicit
6071 * incompatible change: ICR structure is changed; the value part of
6072 CONTINUATION is now called LVAR; corresponding functions are
6073 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
6074 * added type deriver for ISQRT (thanks to Robert E. Brown).
6075 * bug fix: better support for loading from the command line when an
6076 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
6078 * fixed some bugs revealed by Paul Dietz' test suite:
6079 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
6080 ** ROUND and FROUND now give the right answer when given very
6081 small float arguments.
6082 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
6084 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
6085 ** (GCD 0 <negative-integer>) returned <negative-integer>.
6086 ** LCM should return a non-negative integer.
6087 ** PARSE-INTEGER returned the index of a terminator instead of the
6088 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
6089 ** PARSE-INTEGER returned an incorrect index being applied to a
6091 ** LCM with two arguments of 0 returns 0 rather than signalling
6093 ** unsigned addition of a 32-bit constant with the high bit set no
6094 longer causes an internal compiler error on the x86.
6095 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
6096 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
6097 with negative last argument.
6098 ** byte specifiers with zero size and position no longer cause
6099 an error during type derivation.
6100 ** bignum multiplication on the Alpha platform now returns the
6102 * porting: The system now builds on SuSE AMD64, although it still
6103 generates a 32-bit binary.
6104 * .fasl file incompatibility: The fasl file version number has
6105 been incremented (because of the changes to internal compiler
6106 data structures referred to above).
6108 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
6109 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
6110 more accurately, on the Darwin kernel running on PowerPC hardware.
6111 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
6112 * Compiler code deletion notes now signal a condition of type
6113 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
6114 an associated MUFFLE-WARNING restart.
6115 * The compiler now performs limited argument count validation of
6116 constant format strings in FORMAT, and where appropriate in ERROR,
6117 CERROR and WARN. (thanks to Gerd Moellmann)
6118 * New ASDF-INSTALL contrib can be used for automatic download and
6119 installation of third-party Lisp code from CCLAN or other sites
6121 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
6122 which forces another thread to execute a function supplied by the
6124 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
6125 now accept and act upon their :ELEMENT-TYPE keyword argument.
6126 (reported by Martin Atzmueller, Edi Weitz)
6127 * bug fix: FILE-POSITION now accepts position designators up to
6128 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
6129 is the greater. (thanks to Patrik Nordebo)
6130 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
6131 Kalle Olavi Niemitalo)
6132 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
6133 printable. (reported by Eric Marsden)
6134 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
6135 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
6136 * x86 bug fix in control stack exhaustion checking: now shows backtrace
6137 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
6138 (thanks to Stig Sandoe)
6139 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
6140 UNREAD-CHAR now correctly includes the unread character in the
6141 target sequence. (thanks to Gerd Moellmann)
6142 * bug fix in threaded builds: the system can now be suspended and
6143 resumed by shell job control with minimal disruption.
6144 * bug fixes in times and timezones >2038AD
6145 * better handling of "where is GNU make?" problem in build scripts
6146 (thanks to Nikodemus Siivola)
6147 * new optimization: inside a named function any reference to a
6148 function with the same name is considered to be a self-reference;
6149 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
6150 optimization quality.
6151 * new optimization on x86: logical functions and + now have
6152 optimized (UNSIGNED-BYTE 32) versions, which are automatically
6153 used when the result is truncated to 32 bits.
6154 * VALUES declaration is partially enabled.
6155 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
6156 * fixed some bugs revealed by Paul Dietz' test suite:
6157 ** The system now obeys the constraint imposed by
6158 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
6159 types form a lattice under type intersection.
6160 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
6161 ** ASSOC now ignores NIL elements in an alist.
6162 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
6163 and (1+ MOST-POSITIVE-FIXNUM) answers.
6164 ** The addition of a method with invalid qualifiers to a generic
6165 function does not cause an error to be signalled immediately;
6166 a warning is signalled, and the error is generated only on
6167 calling the generic function.
6168 * changed .fasl file version number, in part to add type codes for
6169 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
6170 obscure ANSI requirements
6172 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
6173 * fixed bug 148: failure to inline-expand a local function left
6174 garbage, confusing the compiler.
6175 * fixed bugs 3cd: structure slot readers perform type check if the
6176 slot can have an invalid value (i.e. it is either not initialized
6177 or can be written with a less specific slot writer).
6178 * bug fix: the compiler now traps array references to elements off
6179 the end of an array; previously, the bounds checking in some
6180 circumstances could go off-by-one.
6181 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
6183 * type declarations for array element types now obey the description
6184 on the CLHS page "Declaration TYPE", as per discussions on
6185 sbcl-help around 2003-05-08. This means that a declaration
6186 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
6187 declaration, all references to BAR will be asserted or assumed
6188 (with THE, so dependent on compiler policy) to involve objects of
6189 type FOO. Note that no such declaration is implied in
6190 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
6191 * declared types of functions from the "Conditions"
6192 chapter. (reported by Paul Dietz)
6193 * bug fix: CERROR accepts a function as its first argument.
6194 * bug fix: NTH an NTHCDR accept a bignum as index
6195 arguments. (reported by Adam Warner)
6196 * optimization: character compare routines now optimize comparing
6197 against a constant character. (reported by Gilbert Baumann)
6198 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
6199 argument now works properly on the MIPS platform.
6200 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
6201 * repeated evaluation of the same DEFSTRUCT, a slot of which is
6202 declared to have a functional type, does not cause an error
6204 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
6205 many :DEFAULT-INITARGS. (reported by Istvan Marko)
6206 * fixed bug: if last continuation of a deleted block has a
6207 destination, this destination should be deleted too. (reported by
6209 * fixed a bug in the bootstrap process: the host compiler's values
6210 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
6211 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
6212 test case from Patrik Nordebo)
6213 * improved the ability of the disassembler on the PPC platform to
6214 provide helpful disassembly notes.
6215 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
6216 the class in more cases than previously.
6217 * bug fix: FILE-POSITION now understands :START and :END for
6218 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
6219 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
6220 8) data. (thanks to David Lichteblau)
6221 * bug fix: it is possible to add a method to a generic function
6222 without lambda list.
6223 * bug fix: reader failed to signal END-OF-FILE inside an
6224 object representation. (reported by Nikodemus Siivola)
6225 * fixed some bugs revealed by Paul Dietz' test suite:
6226 ** LAST and [N]BUTLAST should accept a bignum.
6227 ** condition slot accessors are methods.
6228 ** (VECTOR NIL) is a subtype of STRING.
6230 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
6231 * minor incompatible change: some nonsensical specialized lambda
6232 lists (used in DEFMETHOD) which were previously ignored now signal
6234 * minor incompatible change: the system is now aware of the types of
6235 variables in the COMMON-LISP package, and will signal errors for
6236 most violations of these type constraints (where previously they
6237 were silently accepted).
6238 * minor incompatible change: COMPILE-FILE now uses the freedom
6239 afforded (ANSI 3.2.2.3) to use derived function types for
6240 functions defined in the same file. This also permits the system
6241 to warn on static type mismatches and function
6242 redefinition. (Currently it does not work with high DEBUG level.)
6243 * minor incompatible change: VALUES declaration is disabled.
6244 * When issuing notes, the compiler now signals a condition of type
6245 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
6246 restart for use in user handlers. It is expected that the
6247 COMPILER-NOTE condition will eventually become a condition
6248 supertype to a hierarchy of note types, which will then be
6249 handleable in a similar fashion. However, at the moment, no such
6250 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
6251 but it's an implementation detail, not a classification for the
6253 * Changes in type checking closed the following bugs:
6254 ** type checking of unused values (192b, 194d, 203);
6255 ** template selection based on unsafe type assertions (192c, 236);
6256 ** type checking in branches (194bc).
6257 * A short form of VALUES type specifier has ANSI meaning (it has
6258 increased the number of situations when SBCL cannot perform type
6260 * fixed bug in DEFSTRUCT: once again, naming structure slots with
6261 keywords or constants is permissible.
6262 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
6263 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
6264 classes. (thanks to Antonio Martinez)
6265 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
6266 outputs FRESH-LINE or TERPRI, and no longer converts its stream
6267 argument to a pretty-print stream. Instead, it leaves any such
6268 operations to DESCRIBE-OBJECT methods.
6269 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
6271 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
6272 lambda lists. (thanks to David Lichteblau)
6273 * bug fix: Defining a generic function with a :METHOD-CLASS being a
6274 subclass of STANDARD-METHOD no longer causes stack exhaustion.
6275 (thanks to Gerd Moellmann)
6276 * fixed bug 246: increased compilation speed of long
6277 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
6279 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
6281 * DEFCONSTANT now throws a condition of type
6282 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
6283 constant to a non-EQL value; CONTINUE and ABORT restarts
6284 respectively change and preserve the value.
6285 * fixed bug 63: The code walker, part of the implementation of CLOS,
6286 is now better at handling symbol macros.
6287 * bug fix: There is no longer an internal implementation type named
6288 CL:LENGTH. (reported by Raymond Toy)
6289 * bug fix: In macro-like defining macros/special operators the
6290 implicit block does not enclose the lambda list.
6291 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
6292 enclosed in parentheses) are not suitable as type specifiers, and
6293 their use properly signals an error now.
6294 * bug fix: An argument count mismatch for a type specifier in code
6295 being compiled no longer causes an unhandled error at compile
6296 time, but signals a compile-time warning.
6297 * fixed simple vector readable printing
6298 * bug fix: DESCRIBE takes more care over whether the class
6299 precedence list slot of a class is bound before accessing it.
6300 (reported by Markus Krummenacker)
6301 * bug fix: FORMATTER can successfully compile pretty-printer format
6302 strings which use variants of the ~* directive inside.
6303 * bug fix: SEARCH now applies its TEST predicate to the elements of
6304 the arguments in the correct order. (thanks to Wolfhard Buss)
6305 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
6306 in type inference. (thanks to Robert E. Brown)
6307 * bug fix: Reading in symbols with an explicit package name of ""
6308 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
6309 * fixed some bugs revealed by Paul Dietz' test suite:
6310 ** NIL is now allowed as a structure slot name.
6311 ** Arbitrary numbers, not just REALs, are allowed in certain
6312 circumstances in LOOP for-as-arithmetic clauses.
6313 ** Multiple class redefinitions before slot access no longer
6314 causes a type error.
6315 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
6316 association between the name and a class.
6317 ** Generic functions with non-standard method-combination and over
6318 five methods all of which return constants no longer return NIL
6319 after the first few invocations. (thanks to Gerd Moellmann)
6320 ** CALL-NEXT-METHOD with no arguments now passes the original
6321 values of the arguments, even in the presence of assignment.
6322 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
6324 ** DISASSEMBLE works with closures and funcallable instances.
6325 ** ADD-METHOD now returns the generic function, not the new method.
6326 ** FIND-METHOD signals an error if the lengths of the specializers
6327 is incompatible with the generic function, even if the ERRORP
6329 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
6330 which its argument is a member.
6331 ** DEFCLASS only redefines the class named by its class-name
6332 argument if that name is the proper name of the class;
6333 otherwise, it creates a new class.
6334 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
6335 of the UNBOUND-SLOT condition to the name of the slot.
6336 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
6337 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
6338 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
6339 SLOT-MAKUNBOUND in the specified fashion.
6341 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
6342 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
6343 cross-compilation host. As a consequence, we can now bootstrap our
6344 way up to SBCL starting with a bare gcc toolchain and human-readable
6345 source code (first the source to CLISP, then the source to SBCL).
6346 * A contributed module containing a partial implementation of the
6347 simple-streams interface has been included. (thanks to Rudi
6349 * A contributed module implementing the RFC1321 Message Digest
6350 Algorithm, known as MD5, has been included.
6351 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
6352 no longer has any effect, as the code controlled by this feature
6353 has been deleted. (As far as we know, no-one has ever built using
6354 this feature, and its semantics were confused in any case).
6355 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
6356 work on conditions (as required by the ANSI specification),
6357 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
6358 expected behaviour on conditions. Users should note, however,
6359 that such behaviour is not required by the ANSI specification,
6360 and so use of this behaviour may render their code unportable.
6361 * fixed some bugs revealed by Paul Dietz' test suite:
6362 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
6364 ** &ENVIRONMENT parameter in macro lambda list is bound first.
6365 ** SXHASH on condition objects no longer returns NIL.
6366 ** :ALLOCATION :CLASS slots are better treated; their values are
6367 updated on class redefinition, and initforms inherited from
6368 superclasses are applied.
6369 ** REMOVE-METHOD returns its generic function argument even when
6370 no method was removed.
6371 ** SHARED-INITIALIZE now initializes the values of the requested
6372 slots, including those with :ALLOCATION :CLASS.
6373 ** ALLOCATE-INSTANCE now works on structure classes defined via
6374 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
6376 ** SLOT-EXISTS-P now works on conditions, as well as structures
6378 ** MAKE-LOAD-FORM now has the required methods on
6379 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
6380 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
6381 keyword, and now implements the SLOT-NAMES argument.
6382 ** methods with &OPTIONAL arguments no longer allow too many
6383 arguments to be passed in the call without error.
6384 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
6385 option is consistent with the required arguments of the generic
6386 function lambda list.
6387 * bug fix: REQUIRE accepts a string designator. (Thanks to
6389 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
6390 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
6391 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
6392 * bug fix: The compiler now checks for duplicated variables in macro
6394 * bug fix: SETQ on globals returns the correct value.
6395 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
6396 not a COMPILER-ERROR (followed by some other strange error on
6397 choosing the CONTINUE restart).
6398 * bug fix: make.sh and friends are now more consistent in the way that
6399 they look for GNU "make".
6401 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
6402 * experimental native threads support (on x86 Linux >=2.4 only).
6403 This is not compiled in by default: you need to add :SB-THREAD to
6404 the target features. See the "Beyond ANSI" chapter of the manual
6406 * fix for longstanding nonANSIism: The old distinction between
6407 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
6408 The return value from CL:FIND-CLASS is now a CLOS class, and
6409 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
6410 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
6411 * An interface to the MetaObject Protocol, as described in Kiczales,
6412 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
6413 MIT Press, 1991, is available from the SB-MOP package.
6414 * incompatible change: the SB-PCL package should now be considered
6415 a private implementation detail, and no longer a semi-private MOP
6417 * minor incompatible change: due to rearrangement for threads, the
6418 control stack and binding stack are now allocated at arbitrary
6419 addresses instead of being hardcoded per-port. Users affected by
6420 this probably have to be doing advanced things with shared
6421 libraries, and will know who they are.
6422 * minor incompatible change: Previously, all --eval forms used were
6423 processed with READ before any of them were processed with EVAL.
6424 Now each --eval form is processed with both READ and EVAL before
6425 the next --eval form is processed. (Thus package operations like
6426 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
6427 work as the user might reasonably expect.)
6428 * minor incompatible change: *STANDARD-INPUT* is now only an
6429 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
6431 * minor incompatible change: Y-OR-N-P is now character-oriented,
6432 not line oriented. Also, YES-OR-NO-P now works without errors.
6433 (thanks to Antonio Martinez)
6434 * sb-aclrepl module improvements: an integrated inspector, added
6435 repl features, and a bug fix to :trace command.
6436 * Known functions, which cannot be open coded by the backend, are
6437 considered to be able to check types of their arguments. (fixing
6438 a bug report by Nathan J. Froyd)
6439 * fixed a bug in computing method discriminating functions: It is
6440 now possible to define methods specialized on classes which have
6441 forward-referenced superclasses. (thanks to Gerd Moellmann)
6442 * fixed evaluation order in optional entries (reported by Gilbert
6444 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
6445 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
6446 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
6447 required-by-AMOP NAME argument, as well as CLASS and
6448 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
6449 * fixed bug 20: DEFMETHOD can define methods using names that are
6450 not the proper names of classes to designate class specializers.
6451 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
6452 Unix file descriptors, instead of blowing up. (thanks to Antonio
6454 * Garbage collection refactoring: user-visible change is that a
6455 call to the GC function during WITHOUT-GCING will not do garbage
6456 collection until the end of the WITHOUT-GCING. If you were doing
6457 this you were probably losing anyway.
6458 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
6459 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
6460 TYPEP the latter but not the former.
6461 * The compiler issues a full WARNING for calls to undefined functions
6462 with names from the CL package.
6463 * MAP-INTO for a vector destination is open coded. (reported by
6464 Brian Downing on c.l.l)
6465 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
6466 documentation string.
6467 * fixed some bugs revealed by Paul Dietz' test suite:
6468 ** COPY-ALIST now signals an error if its argument is a dotted
6470 ** Condition slots are now accessed more correctly in the presence
6471 of multiple initargs for a given slot.
6472 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
6473 exclude restarts of the same name associated with a different
6475 ** DEFCLASS of forward-referenced classes with another
6476 forward-referenced class in the superclasses list no longer
6478 ** Condition slots are now initialized once each, not multiple
6479 times. (thanks to Gerd Moellmann)
6480 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
6482 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
6483 ** NSET-EXCLUSIVE-OR does not return extra elements when its
6484 arguments contain duplicated elements.
6485 ** RESTART-CASE understands local macros.
6486 ** RESTART-CASE associates exactly its own restarts with a condition.
6487 ** ENDP in safe mode checks its argument to be of type LIST.
6488 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
6489 in question is unbound.
6490 ** Optimized MAKE-INSTANCE functions no longer cause internal
6491 assertion failures in the presence of duplicate initargs.
6492 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
6493 ** Side-effectful :DEFAULT-INITARGS have their side-effects
6494 propagated even in the ctor optimized implementation of
6496 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
6498 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
6499 * a better implementation of SXHASH on (simple) bit vectors,
6500 measured both in execution speed and in distribution of results
6501 over the positive fixnums, has been installed. Likewise, a better
6502 implementation of EQUAL for simple bit vectors is now available.
6503 * fixed CEILING optimization for a divisor of form 2^k.
6504 * fixed bug 240 (emitting extra style warnings "using the lexical
6505 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
6506 by Antonio Martinez)
6507 * fixed SXHASH, giving different results for NIL depending on type
6508 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
6509 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
6510 variable. (found by Rolf Wester)
6511 * SBCL does not ignore type declarations for special
6512 variables. (reported by rif on c.l.l 2003-03-05)
6513 * some bug fixes in contrib/sb-aclrepl/
6514 * fixed some bugs revealed by Paul Dietz' test suite:
6515 ** a bug in the CONS type specifier, whereby the CAR and CDR
6516 types got intertwined, has been fixed;
6517 ** the type system is now able to reason about the interaction
6518 between INTEGER and RATIO types more completely;
6519 ** APPEND, [N]REVERSE and NRECONC check that those their
6520 arguments, which must be proper lists, are really so;
6521 ** An array specialized to be unable to hold elements has been
6522 implemented, as required -- yes, really -- by ANSI;
6523 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
6524 on malformed property lists;
6526 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
6527 * incompatible packaging change: in line with Unix convention,
6528 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
6529 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
6530 * REQUIRE and PROVIDE are now optionally capable of doing something
6531 useful. See the documentation string for REQUIRE.
6532 * infrastructure for a managed SBCL contrib system: contributed
6533 modules in this release include:
6534 ** the ASDF system definition facility;
6535 ** an interface to the BSD Sockets API;
6536 ** an ACL-like convenience interface to the repl;
6537 (thanks to Kevin Rosenberg)
6538 ** an implementation of ROTATE-BYTE, with efficient implementation
6540 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
6541 gives a closer approximation to the right answer than previously.
6542 (thanks to Raymond Toy)
6543 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
6544 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
6545 optional environment arguments, as required by ANSI.
6546 * fixed bugs in other functions taking environment objects, allowing
6547 calls with an explicit NIL environment argument to be compiled
6549 * fixed bug 228: primary return values from
6550 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
6551 COMPILE or FUNCTION.
6552 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
6553 :TYPE will no longer signal errors on innocuous objects.
6554 * fixed bug 231b: SETQ is better at respecting type declarations in
6555 the lexical environment.
6556 * fixed a bug in DEFCLASS: classes named by symbols with no or
6557 unprintable packages can now be defined.
6558 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
6559 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
6560 * fixed compiler failure related to checking types of functions.
6561 (reported by Robert E. Brown)
6562 * the compiler is now much more consistent in its error-checking
6563 treatment of bounding index arguments to sequence functions: in
6564 (SAFETY 3) code, errors will be signalled in almost all cases if
6565 invalid sequence bounding indices are passed to functions defined
6566 by ANSI to operate on sequences.
6567 * fixed a bug in the build procedure: documentation of SBCL-specific
6568 packages is now preserved and available in the final Lisp image.
6569 * lifted FDEFINITION lookup out of loops in the implementation of
6570 many list operations. (thanks to Robert E. Brown)
6571 * fixed a bug in the reader: the #n# reader macro now works for
6572 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
6573 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
6574 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
6575 E. Brown and Tony Martinez respectively)
6576 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
6577 SLOT-BOUNDP: in particular, it is now able to optimize them much
6578 better, and is now not vulnerable to having packages renamed.
6579 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
6580 always called when a slot is not present in an instance. (thanks
6582 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
6583 longer signal an error on unreading a character following EOF on
6584 the previous constituent stream. (thanks to Tony Martinez)
6585 * fixed some bugs revealed by Paul Dietz' test suite:
6586 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
6587 not just nonnegative fixnums;
6588 ** the logical bit-array operators such as BIT-AND now accept an
6589 explicit NIL for their "opt-arg" argument (to indicate a
6590 freshly-consed result bit-array);
6591 ** ELT now signals an error on an invalid sequence index in safe
6593 ** the type system is now cleverer about negations of numeric
6594 types, and consequently understands the BIGNUM and RATIO types
6596 ** the type system is now cleverer about the interaction between
6597 INTEGER and RATIO types: while bugs still remain, many more
6598 cases are accurately computed;
6599 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
6600 if it is in the last clause;
6601 ** CONSTANTLY now correctly returns a side-effect-free function in
6603 ** DECLARE is no longer treated as a special-operator; in
6604 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
6605 * incremented fasl file version number due to the change in the
6606 DEFSTRUCT-SLOT-DESCRIPTION structure.
6608 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
6609 * minor incompatible change: code processed by the "interpreter" or
6610 EVAL now has a compilation optimization policy of (DEBUG 2)
6611 (changed from (DEBUG 1)) to improve debuggability of interactive
6612 development, and to allow the use of the debug RETURN command in
6614 * an experimental implementation of the RETURN command for the
6615 debugger has been included. (thanks to Frederik Kuivinen)
6616 * fixed bug 62: constraints were not propagated into a loop.
6617 * fixed bug in embedded calls of SORT (reported and investigated by
6619 * fixed some bugs revealed by Paul Dietz' test suite:
6620 ** printing and reading of arrays with some dimensions having
6621 length 0 (thanks to Gerd Moellmann);
6622 ** BOA constructor with &AUX argument without a default value does
6623 not cause a type error;
6624 ** CONSTANTP now returns true for all self-evaluating objects.
6626 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
6627 * fixed bug 127: DEFSTRUCT now does not clobber old structure
6628 accessors that are related by inheritance, as specified in the
6629 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
6630 Valtteri Vuorikoski)
6631 * The compiler is now able to inline functions that were defined in
6632 a complex lexical environment (e.g. inside a MACROLET).
6633 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
6635 * Support for the upcoming FreeBSD-5.0 release has been included.
6636 (thanks to Dag-Erling Smorgrav)
6637 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
6638 effect when it is not in a toplevel context.
6639 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
6640 stand a better chance of being correct. (thanks to Gerd
6642 * fixed bug in COERCE, which now signals an error on coercing a
6643 rational to a bounded real type which excludes the expected
6645 * The compiler is now able to derive types more accurately from the
6646 COERCE and COMPILE functions.
6647 * fixed bug 223: functional binding is considered to be constant
6648 only for symbols in the CL package.
6649 * fixed bug 231: SETQ did not check the type of a variable being set
6650 (reported by Robert E. Brown)
6651 * A new optimization for MAKE-INSTANCE has been included, fixing
6652 various bugs (including relating to :ALLOCATION :CLASS slots and
6653 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
6655 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
6656 ** As required by ANSI, LOOP now disallows anonymous collection
6657 clauses such as COLLECT I in conjunction with aggregate boolean
6658 clauses such as THEREIS (= I 1);
6659 ** LOOP now signals an error when any variable is reused in the
6660 same loop (including the potentially useful construct analogous
6661 to WITH A = 1 WITH A = (1+ A);
6662 ** IT is only a special loop symbol within the first clause of a
6663 conditional loop clause;
6664 ** LOOP with a typed iteration variable over a hashtable now
6665 signals a type error iff it should.
6666 * fixed some other bugs revealed by Paul Dietz' test suite:
6667 ** FILE-STREAM now names the class previously known as FD-STREAM;
6668 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
6669 argument) no longer signals an error;
6670 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
6671 of the slot symbol, rather than using the current package
6672 ((:CONC-NAME "") continues to intern the slot's name in the
6674 * incremented fasl file version number, because of the incompatible
6675 change to the DEFSTRUCT-DESCRIPTION structure, and again because
6676 of the new implementation of DEFINE-COMPILER-MACRO.
6678 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
6679 * Support for building SBCL for MIPS platforms running in
6680 little-endian mode has now been checked in, and basic
6681 functionality on said platforms verified.
6682 * minor incompatible change: PCL now records the pathname of a file
6683 in which methods and the like are defined, rather than its
6685 * minor incompatible change: TRUENAME now considers the truename of
6686 a file naming a directory to be the pathname with :DIRECTORY
6687 component indicating that directory.
6688 * minor incompatible change: a NAMED clause in the extended form of
6689 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
6690 reason for the previous behaviour is unclear.
6691 * more systematization and improvement of CLOS and MOP conformance
6692 in PCL (thanks to Gerd Moellman and Pierre Mai):
6693 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
6695 ** DEFINE-METHOD-COMBINATION no longer signals an error for
6696 primary methods with no specializers;
6697 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
6699 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
6700 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
6701 FORWARD-REFERENCED-CLASSes; error reporting on
6702 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
6704 ** SXHASH on CLOS instances now uses a slot internal to the
6705 instance to return different numbers on distinct instances,
6706 while preserving the same return value through invocations of
6708 ** DEFMETHOD signals errors when methods with longer incongruent
6709 lambda lists are added to generic functions;
6710 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
6711 CLASS, as specified in AMOP;
6712 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
6713 on the order returned by the primary method for classes of
6714 class STANDARD-CLASS;
6715 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
6716 * fixed some bugs shown by Paul Dietz' test suite:
6717 ** DOLIST puts its body in TAGBODY;
6718 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
6720 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
6721 value producing form;
6722 ** if more variables are given to PROGV than values, extra
6723 variables are bound and made to have no value;
6724 ** NSUBSTITUTE on list arguments gets the right answer with
6726 ** ELT signals an error of type TYPE-ERROR when the index argument
6727 is not a valid sequence index;
6728 ** LOOP signals (at macroexpansion time) an error of type
6729 PROGRAM-ERROR when duplicate variable names are found;
6730 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
6731 ** FUNCALL of special-operators now cause an error of type
6733 ** PSETQ now works as required in the presence of side-effecting
6734 symbol-macro places;
6735 ** NCONC accepts any object as its last argument;
6736 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
6738 ** loop-for-as-package does not require a package to be explicitely
6740 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
6742 * fixed bug 166: compiler preserves "there is a way to go"
6743 invariant when deleting code.
6744 * fixed bug 172: macro lambda lists with required arguments after
6745 &REST arguments now cause an error to be signalled. (thanks to
6747 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
6748 bug. (thanks to Matthew Danish)
6749 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
6751 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
6752 arguments are lexically rebound. (thanks to Gerd Moellmann and
6754 * fixed bug 194: error messages are now more informative when there
6755 is no primary method applicable in a call to a generic
6756 function. (thanks to Gerd Moellmann)
6757 * fixed bug in command line argument checking (thanks to Julian
6759 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
6760 (thanks to Matthew Danish)
6761 * incremented fasl file version number, because of the
6762 SXHASH-related changes in the layout of CLOS data structures
6764 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
6765 * minor incompatible change: The runtime (the Unix executable named
6766 "sbcl") is now much pickier about the .core files it will load.
6767 Essentially it now requires .core files to descend from the same
6768 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
6769 as the runtime does. (The intent is to prevent the crashes which
6770 can occur, and which can even be reported as mysterious failures,
6771 when people patch the sources or change the build parameters
6772 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
6773 sbcl and .core files.)
6774 * fixed bug: VALUES-LIST is no longer optimized away.
6775 * fixed bug 142: The FFI conversion of C string values to Lisp
6776 string values no longer conses excessively. (thanks to Nathan
6777 Froyd porting Raymond Toy's fix to CMU CL)
6778 * began to systematize and improve MOP conformance in PCL (thanks to
6779 Nathan Froyd, Gerd Moellman and Pierre Mai):
6780 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
6782 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
6783 ** FINALIZE-INHERITANCE is now called on class finalization;
6784 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
6785 argument precedence order.
6786 * fixed bug 202: The compiler no longer fails on functions whose
6787 derived types contradict their declared type.
6788 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
6789 so it can be non-toplevel.
6790 * The fasl file version number has changed (because of the new
6791 implementation of DEFMACRO).
6792 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
6793 safe code, that any length requirement by their type-specifier
6794 argument is valid. The exceptions to this are described in bug
6796 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
6797 functions now check the types of their inputs as required by ANSI.
6798 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
6799 introduced symbol is DECLAREd to be SPECIAL.
6800 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
6801 * fixed bug: :COUNT argument to sequence functions may be negative
6802 * fixed bug: body of DO-SYMBOLS may contain declarations
6803 * fixed bug: PUSHNEW now evaluates its arguments from left to right
6804 (reported by Paul F. Dietz, fixed by Gerd Moellman)
6805 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
6806 symbol macro only once
6807 * fixed printing of call frame when argument list is unavailable
6808 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
6809 * compiler no longer signals WARNING on unknown keyword
6812 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
6813 * A beta-quality port to the mips architecture running Linux,
6814 based on the old CMUCL backend, has been made. It has been tested
6815 on a big-endian kernel, and works sufficiently well to be able to
6816 rebuild itself; it has not been tested in little-endian mode.
6817 * fixed an inconsistency between gencgc.c and purify.c which made
6818 dumping/loading .core files unreliable
6819 * fixed bug 120a: The compiler now deals correctly with IFs where
6820 the consequent is the same as the alternative, instead of
6821 misderiving the return type. (thanks to Alexey Dejneka)
6822 * fixed bug 113: Logical pathnames are now dumpable (the logical
6823 host is resolved at load-time, throwing an error if it is not
6825 * fixed bug 174: FORMAT's error message is slightly clearer when a
6826 non-printing character is used in a format directive.
6827 * fixed several bugs in compiler checking of type declarations, i.e.
6828 violations of the Python "declarations are assertions" principle
6829 (thanks to Alexey Dejneka)
6830 * fixed several bugs in PCL's error checking (thanks to Gerd
6832 * fixed bug: printing of FILE-ERROR (thanks to Antonio
6834 * fixed bug in compilation of functions as first class values
6835 (thanks to Antonio Martinez-Shotton)
6836 * The compiler's handling TYPE-ERRORs which it can prove will
6837 inevitably happen at runtime has been cleaned up and corrected
6838 in several ways. (thanks to Alexey Dejneka)
6839 * improved argument type checking for various basic arithmetic
6840 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6841 lavished on them in the past that they can be compiled in many
6842 ways in different special cases
6843 * fixed bug 181: compiler checks validity of user supplied type
6845 * cleaned up code flushing in optimization: Function calls which
6846 should signal errors for safety purposes (e.g. which ANSI says
6847 should signal errors when their arguments are of incorrect type)
6848 are no longer optimized away.
6849 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6850 * incremented fasl file version number, because changes in the
6851 implementation of sequence functions like COERCE caused
6852 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6853 in old inline expansions) to become undefined. (Actually these
6854 changes were later undone, so we might very well be binary
6855 compatible with 0.7.7 after all, but leaving the version number
6856 incremented seemed like the simplest and most conservative
6859 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6860 * An alpha-quality port to the parisc architecture running Linux,
6861 based on the old CMUCL backend, has been made. This, even more so
6862 than the other backends, should be considered still a work in
6863 progress; known problems include that the Linux kernel in 64-bit
6864 mode does not propagate the correct sigcontext structure to
6865 userspace, and consequently SBCL on a parisc64 kernel will not
6867 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6868 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6869 suppressed.) Also now that the compiler is looking at declarations
6870 in the environment, it checks optimization declarations as well,
6871 and suppresses inlining when (> DEBUG SPEED).
6872 * More fixes have been made to treatment of floating point exception
6873 treatment and other Unix signals. In particular, floating point
6874 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6875 * The detection and handling of control stack exhaustion (infinite
6876 or very deeply nested recursion) has changed. Stack exhaustion
6877 detection is now done by write-protecting pages at the OS level
6878 and applies at all optimization settings; when found, a
6879 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6880 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6881 be caught using IGNORE-ERRORS.
6882 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6883 correctly when transforming recursive LABELS functions to LETs.
6884 (thanks to Alexey Dejneka)
6885 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6886 that are names of constants or global variables.
6887 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6888 alien routines with docstrings.
6889 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6890 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6892 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6893 (thanks to Eric Marsden)
6894 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6895 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6896 * Bug fix: The SPARC backend can now compile functions involving
6897 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6898 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6899 to a functions expecting a PATHNAME-DESIGNATOR.
6900 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6901 lambda lists. (thanks to Alexey Dejneka)
6902 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6903 functions so that EXPORTing the name of the class doesn't cause
6904 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6905 to Antonio Martinez for reporting this)
6906 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6907 constant-folded without failing an assertion. (thanks to Einar
6908 Floystad Dorum for reporting this)
6909 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6910 types are now dealt with more correctly by the compiler.
6911 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6912 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6913 behaviour analogous to RENAME-FILE. This puts its behaviour more
6914 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6916 * The fasl file version number has changed again. (because of the
6917 bug fix involving the names of PCL MAKE-INSTANCE functions)
6919 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6920 * bug fix: Floating point exceptions are treated much more
6921 consistently on the x86/Linux and PPC/Linux platforms.
6922 * Array initialization with :INITIAL-ELEMENT is now much faster for
6923 cases when the compiler cannot open code the array creation, but
6924 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6925 array accesses have also seen a speed increase.
6926 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6927 specified. (This was at the root of some bad interactions between
6928 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6930 * bug fix: Internal error arguments for undefined functions are now
6931 computed correctly on the PPC/Linux platform.
6932 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6933 Raymond Toy's patch for CMU CL)
6934 * Support for the Solaris 9 operating environment has been included
6935 (thanks to Daniel Merritt)
6936 * A very ugly but hopefully complete draft of the missing FFI chapter
6937 of the manual has been created by reformatting the corresponding
6938 CMU CL manual chapter into (currently very ugly and incoherent)
6939 DocBook and bringing it up to date for SBCL behavior. Thus, the
6940 manual is now essentially complete, at least by my extreme
6941 once-and-only-once standards, whereby it's acceptable to refer to
6942 the doc strings of SB-EXT functions as the primary documentation.
6943 * The fasl file version number has changed again, due to cleanup of
6944 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6945 is no longer a static symbol.)
6947 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6948 * SBCL now builds with OpenMCL (version 0.12) as the
6949 cross-compilation host; also, more progress has been made toward
6950 bootstrapping under CLISP.
6951 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6953 * bug 158 fixed: The compiler can now deal with integer loop
6954 increments different from 1; fixing this turned out also to fix
6956 * bug 169 fixed: no more bogus warnings about using lexical bindings
6957 despite the presence of perfectly good SPECIAL declarations (thanks
6958 to David Lichteblau)
6959 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6960 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6961 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6963 * bug 180 fixed: Method combination specifications no longer ignore
6964 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6965 * bug fix: Structure type predicate functions now check their argument
6966 count as they should.
6967 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6968 correctly. (thanks to Pierre Mai)
6969 * minor incompatible change: The --noprogrammer option is deprecated
6970 in favor of the new --disable-debugger option, which is very similar.
6971 (The major difference is that it takes effect at a slightly different
6972 time at startup, causing handling of errors in --sysinit and
6973 --userinit files will be affected differently.) The
6974 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6975 been added to allow this functionality to be controlled from ordinary
6976 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6977 maintainers, who might want to run non-interactive scripts to
6978 build SBCL cores which will later be used interactively.)
6979 * minor incompatible change: The LOAD function no longer, when given
6980 a wild pathname to load, loads all files matching that pathname.
6981 Instead, an error of type FILE-ERROR is signalled.
6983 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6984 * bug 147 fixed: The compiler preserves its block link/count
6985 invariants more correctly now so that it doesn't crash. (thanks
6987 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6989 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6990 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6991 no-value-for-this-character as NIL (as specified by ANSI).
6992 * HOST-NAMESTRING on physical pathnames now returns a string that is
6993 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6994 (thanks to Christophe Rhodes)
6995 * The Alpha port handles icache flushing more correctly. (thanks to
6997 * More progress has been made toward bootstrapping under CLISP. (thanks
6998 to Christophe Rhodes)
6999 * The fasl file format has changed again, because dynamic loading
7000 on OpenBSD (which has non-ELF object files) motivated some cleanups
7001 in the way that foreign symbols are transformed and passed around.
7002 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
7003 is no longer treated as whitespace by the reader, but instead as
7004 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
7005 |A
\x7fB|, instead of A as it used to.
7007 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
7008 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
7009 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
7010 * SBCL now runs on the PPC archtiecture under Linux. It actually did
7011 this as of 0.7.1.45, but was left out of the previous news section
7012 (thanks to Dan Barlow)
7013 * SBCL now runs on the Solaris operating system on SPARC architectures
7014 (thanks to Christophe Rhodes's port of the CMUCL runtime)
7015 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
7016 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
7017 * SPARC backend cleanups, allowing builds of cores optimized for V8
7018 and V9 SPARCS, and also emission of code targeted to a particular
7019 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
7021 * SBCL is closer to bootstrapping under CLISP, thanks to various
7022 fixes by Christophe Rhodes.
7023 * The fasl file format has changed again, to allow the compiler's
7024 INFO database to support symbol macros.
7025 * The user manual (in doc/) is formatted into HTML more nicely.
7026 (thanks to coreythomas)
7027 * The system is smarter about SUBTYPEP relationships, especially
7028 those involving NOT types (including types such as ATOM which are
7029 represented internally using NOT types). Thus SUBTYPEP is less
7030 likely to return (VALUES NIL NIL) in general, and in particular
7031 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
7033 * The fasl file format has changed again, because the internal
7034 representation of types now includes a new slot to support the new
7035 SUBTYPEP-of-NOT-types logic.
7036 * (not a change in the main branch of SBCL, but a related prototype
7037 which can hopefully be merged into the main branch of SBCL in the
7038 future:) Brian Spilsbury has produced a Unicode-enabled variant of
7039 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
7040 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
7041 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
7042 dispatch macro character combinations. (thanks to Alexey Dejneka)
7043 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
7044 that superficially look like logical namestrings correctly.
7045 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
7047 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
7048 default supplied-p) for &optional and &key arguments. (thanks to
7051 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
7052 * incompatible change: The compiler is now less aggressive about
7053 tail call optimization, doing it only when (> SPACE DEBUG) or
7054 (> SPEED DEBUG). (This is an incompatible change because there are
7055 programs which relied on the old CMU-CL-style behavior to optimize
7056 away their unbounded recursion which will now die of stack overflow.)
7057 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
7058 for non-GENCGC systems has been increased to 20M (since that
7059 seems much closer to the likely performance optimum for modern
7060 systems than the old 4M value was)
7061 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
7062 and *DEBUG-PRINT-LEVEL*
7063 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
7064 of CMU CL's support for SPARC, and various endianness and other
7065 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
7066 * new syntactic sugar for the Unix command line: --load foo.bar is now
7067 an alternate notation for --eval '(load "foo.bar")'.
7069 ** The system now detects stack overflow and handles it gracefully,
7070 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
7071 optimization settings. (This is a good thing in general, and
7072 its introduction in this version should be particularly timely
7073 for anyone whose code fails because of suppression of tail
7075 ** The system now hunts for the C variable "environ" in a more
7076 devious way, to avoid segfaults when the C library version differs
7077 between compile time and run time. (thanks to Christophe Rhodes)
7078 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
7079 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
7080 ** The compiler no longer issues bogus style warnings for undefined
7081 classes in the same source file as the DEFCLASSes which defined
7082 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
7084 ** fixes in CONDITION class precedence list for undefined function
7085 errors (thanks to Alexei Dejneka)
7086 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
7087 correctly. (thanks to Dan Barlow)
7088 ** portability fixes aiming at bootstrapping under CLISP (thanks
7089 to Dave McDonald and Christophe Rhodes)
7090 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
7091 ** fixes in type translation and and type inference (thanks to
7093 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
7094 ** various fixes in the new ports (thanks to Dan Barlow)
7095 * several changes related to debugging:
7096 ** suppression of tail recursion, as noted above
7097 ** stack overflow detection, as noted above
7098 ** The default implementation of TRACE has changed. :ENCAPSULATE T
7099 is now the default. (For some time encapsulation has been more
7100 reliable than the breakpoint-based :ENCAPSULATE NIL
7101 implementation, at least on X86 systems; and I just noticed that
7102 encapsulation also seems closer to the spirit of the ANSI
7105 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
7107 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
7108 up properly again. (There was a packaging bug in 0.7.0 which
7109 left their definitions in SB-SYS::LOAD-FOREIGN and
7110 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
7111 vital for most things which interface to C-level interfaces,
7112 like extensions working with sockets or databases or
7113 Perl-compatible regexes or whatever, and the need to fix
7114 this bug is the main reason that 0.7.1 was released so
7116 ** DEFGENERIC is now choosier about the methods it redefines, so that
7117 reLOADing a previously-LOADed file containing DEFGENERICs does
7118 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
7119 cycle now works as it should. (thanks to Alexey Dejneka)
7120 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
7121 fixed by Christophe Rhodes. (He actually submitted this patch
7122 months ago, and I delayed until after 0.7.0.)
7123 ** Bug 111 (internal compiler confusion about runtime checks on
7124 FUNCTION types) was fixed by Alexey Dejneka.
7125 * Some internal cleanups (getting rid of variables which aren't
7126 needed now that the byte interpreter is gone) caused the fasl
7127 file format number to change again.
7129 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
7130 * major incompatible change: The default fasl file extension, i.e. the
7131 default extension for files produced by COMPILE-FILE, has changed
7132 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
7134 ** There are many changes in the implementation of the compiler.
7135 SBCL is now essentially a compiler-only implementation of ANSI
7136 Common Lisp. EVAL still "interprets" a few special cases, but
7137 almost all the interesting cases are handled by creating
7138 a LAMBDA expression, calling COMPILE on it, then calling
7139 FUNCALL on the result.
7140 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
7141 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
7142 Since the code is newer, there might still be some new bugs
7143 (though not as many as before Martin Atzmueller's fixes:-). But
7144 the new code is substantially simpler and clearer, and hopefully
7145 any remaining bugs will be simpler, less fundamental, and more
7146 fixable then the bugs in the old code.
7147 ** The revised compiler is still a little unsteady on its feet.
7149 *** The debugging information it produces (particularly the names
7150 of FUNCTION objects) is sometimes much less useful than what
7151 the old compiler produced.
7152 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
7153 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
7154 within a MACROLET) has been temporarily weakened.
7155 ** There are new compiler optimizations for various functions:
7156 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
7157 FIND-IF-NOT, POSITION-IF-NOT, and FILL
7158 *** the math functions TRUNCATE, FLOOR, and CEILING
7159 *** the function-of-all-trades COERCE
7160 Mostly these should be transparent, but there's one
7161 potentially-annoying problem (bug 117): when the compiler
7162 inline-expands a function and does type analysis on the result,
7163 it can create control paths which have type mismatches, and
7164 when it can't prove that those control paths aren't taken,
7165 it will issue WARNINGs about the type mismatches. This is
7166 a particular problem in practice for the new sequence functions.
7167 It's not clear how this should be fixed, and for now, a
7168 workaround is given in the entry for 117 in the BUGS file.
7169 ** (Because of the interaction between the two previous items --
7170 occasional inlining problems and new inline expansions -- some
7171 of the new sequence function optimizations won't really kick in
7172 completely until debugging information, and then inlining, are
7173 straightened out in some future version.)
7174 * minor incompatible changes:
7175 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
7176 DIRECTORY no longer implicitly promotes NIL slots of its
7177 pathname argument to :WILD. In particular, when you ask for the
7178 contents of a directory (which you used to be able to do without
7179 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
7180 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
7181 ** changes in behavior that ANSI explicitly defines to be
7182 implementation dependent:
7183 *** The new compiler-only implementation still conforms with ANSI,
7184 but acts a little different than before. Besides the obvious
7185 changes in performance tradeoffs (that the cost per form passed
7186 to EVAL has gone up, and the cost per form executed by EVAL
7187 has gone down), the behavior of the system changes a little
7188 because there are no longer any interpreted function objects.
7189 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
7190 e.g. doing COMPILE on the output of interactive DEFUN is
7192 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
7194 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
7195 has changed from (:CL) to NIL.
7196 *** The CHAR-NAME of unprintable ASCII characters which, unlike
7197 e.g. #\Newline and #\Tab, don't have names specified in the
7198 ANSI Common Lisp standard, is now based on their ASCII symbolic
7199 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
7200 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
7201 are no longer used for output.
7202 ** changes in internal implementation constants:
7203 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
7204 4 million. (If your application spends a lot of time GCing and
7205 you have a lot of RAM, you might want to experiment with
7206 increasing it even more.)
7207 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
7208 However, almost all old code should still continue to work without
7209 immediate update, as SB-C-CALL is now a (deprecated) nickname
7211 ** Old operator names in the style DEF-FOO are now deprecated in
7212 favor of new corresponding names DEFINE-FOO, for consistency with
7213 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
7214 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
7215 internal symbols, but a few supported extensions like
7216 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
7217 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
7218 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
7219 etc. as you get deeper into recursive calls to the debugger
7220 command loop, instead of the old "5]", "5]]", "5]]]"
7221 sequence. (I was motivated to do this when squabbles between
7222 ILISP and SBCL left me very deeply nested in the debugger. In the
7223 short term, this change will probably provoke more ILISP/SBCL
7224 squabbles, but hopefully it will be an improvement in the long run.)
7225 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
7226 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
7227 function, since declaiming return types involving aliens is
7228 (1) annoyingly messy to do by hand and (2) vital to efficient
7229 compilation of code which calls such functions.
7230 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
7231 longer reexported by the SB-EXT package. They're solely useful
7232 for alien code, so it seems more logical that you should get
7233 them from the SB-ALIEN package, not in SB-EXT.
7234 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
7235 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
7236 features. Instead, the code that they used to control is always
7237 built into the system.
7238 * many other bug fixes
7239 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
7240 advantage of the new EVAL-WHEN stuff and to clean them up in
7241 general, and they are now more ANSI-compliant in a number of
7242 ways. Martin Atzmueller is responsible for a lot of this.
7243 ** Besides the cleanups discussed above, Martin Atzmueller fixed
7245 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
7246 *** correct ERROR type for various file operations
7247 *** some fixes for Lisp streams
7248 *** DEFMETHOD syntax checking
7249 *** changing old weird representation of debug information as
7250 strings (which, among their other deficiencies, don't transform
7251 correctly when you rename packages, and don't change their
7252 print representation when you change things like *PACKAGE*
7253 and *PRINT-LENGTH*) to symbols and lists of symbols
7254 He also made several improvements and fixed several bugs in DESCRIBE.
7255 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
7257 *** misbehavior of WRITE-STRING/WRITE-LINE
7258 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
7259 and several other LOOP problems as well
7260 *** DIRECTORY when similar filenames are present
7261 *** DEFGENERIC with :METHOD options
7262 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
7263 *** bug in the optimization of ARRAY-ELEMENT-TYPE
7264 *** argument ordering in FIND with :TEST option
7265 *** mishandled package designator argument in APROPOS-LIST
7266 *** various problems in the backquote readmacro
7267 *** a bug in APROPOS
7268 *** probably some others that I'm not describing very well here,
7269 since the CVS log documents them by reference to sbcl-devel
7270 messages, and the SourceForge archives aren't working well.:-(
7271 ** Dan Barlow improved the Alpha port (and is making progress on the
7272 PPC port, for those of you who think different).
7273 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
7274 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
7275 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
7276 continues to work on the SPARC port (for those of you in a position
7277 to look down upon our little PC-compatible boxes from a great height).
7278 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
7279 and uses that copy, rather than the current dynamic value, when
7280 it's trying to decide whether to truncate output. Thus e.g.
7281 (let ((*print-lines* 50))
7282 (pprint-logical-block (stream nil)
7284 (let ((*print-lines* 8))
7285 (print (aref possiblybigthings i) stream)))))
7286 should now truncate the logical block only at 50 lines, instead of
7287 often truncating it at 8 lines, as it did before.
7288 * The doc/cmucl/ directory, containing old CMU CL documentation
7289 from the time of the fork, is no longer part of the base system.
7290 SourceForge has shut down its anonymous FTP service, and with it
7291 my original plan for distributing the old CMU CL documentation
7292 there. For now, if you need these files you can download an old
7293 SBCL source release and extract them from it.
7294 * The fasl file version number changed again, for dozens of reasons,
7295 some of which are apparent above.
7297 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
7298 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
7299 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
7300 patch, so that DISASSEMBLE output is much nicer.
7301 * The code in the SB-PROFILE package now seems reasonably stable.
7302 I still haven't decided what the final interface should look like
7303 (I'd like PROFILE to interact cleanly with TRACE, since both
7304 facilities use function encapsulation) but if you have a need
7305 for profiling now, you can probably use it successfully with
7306 the current CMU-CL-style interface.
7307 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
7308 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
7309 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
7310 link now returns the dangling link itself, and for similar
7311 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
7312 link itself. (In these cases the old code signalled an error and
7313 looped endlessly, respectively.) Thus, DIRECTORY now works even
7314 in the presence of dangling and cyclic symbolic links.
7315 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
7316 is now a supported extension again, since the consensus on
7317 sbcl-devel was that it can be useful for ordinary development
7318 work, not just for debugging SBCL itself.
7319 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
7320 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
7321 that currently-defined functions might be redefined later with
7322 different return types.
7323 * Hash tables can be printed readably, as inspired by CMU CL code
7324 of Eric Marsden and SBCL code of Martin Atzmueller.
7325 * better error handling in CLOS method combination, thanks to
7326 Martin Atzmueller porting Pierre Mai's CMU CL patches
7327 * more overflow fixes for >16Mbyte I/O buffers
7328 * A bug in READ has been fixed, so that now a single Ctrl-D
7329 character suffices to cause end-of-file on character streams.
7330 In particular, now you only need one Ctrl-D at the command
7331 line (not two) to exit SBCL.
7332 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
7334 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
7335 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
7336 does the right thing.
7337 * The implementation of some type tests, especially for CONDITION
7338 types, is now tidier and maybe faster, due to CMU CL code
7339 originally by Douglas Crosher, ported by Martin Atzmueller.
7340 * Some math functions have been fixed, and there are new
7341 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
7342 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
7343 * (There are also some new optimizers in contrib/*-extras.lisp. Those
7344 aren't built into sbcl-0.6.13, but are a sneak preview of what's
7345 likely to be built into sbcl-0.7.0.)
7346 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
7347 CL, ported to SBCL by Martin Atzmueller)
7348 * DESCRIBE now gives more information in some cases. (Pierre Mai's
7349 patch to CMU CL, ported to SBCL by Martin Atzmueller)
7350 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
7351 * There's a new slam.sh hack to shorten the edit/compile/debug
7352 cycle for low-level changes to SBCL itself, and a new
7353 :SB-AFTER-XC-CORE target feature to control the generation of
7354 the after-xc.core file needed by slam.sh.
7355 * minor incompatible change: The ENTRY-POINTS &KEY argument to
7356 COMPILE-FILE is no longer supported, so that now every function
7357 gets an entry point, so that block compilation looks a little
7358 more like the plain vanilla ANSI section 3.2.2.3 scheme.
7359 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
7360 returns the number of bytes consed since the system started,
7361 rather than the number consed since the first time the function
7362 was called. (The new definition parallels ANSI functions like
7363 CL:GET-INTERNAL-RUN-TIME.)
7364 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
7365 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
7366 supported. Now DIRECTORY always does the abstract Common-Lisp-y
7367 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
7368 * Fasl file version numbers are now independent of the target CPU,
7369 since historically most system changes which required version
7370 number changes have affected all CPUs equally. Similarly,
7371 the byte fasl file version is now equal to the ordinary
7374 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
7375 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
7376 is no longer recognized. I apologize for this, because it was
7377 listed in SB-EXT as a supported extension, but I found that
7378 its existing behavior was poorly specified, as well as incorrectly
7379 specified, and it looked like too much of a mess to straighten it
7380 out. I have enough on my hands trying to get ANSI stuff to work..
7381 * many patches ported from CMU CL by Martin Atzmueller, with
7382 half a dozen bug fixes in pretty-printing and the debugger, and
7383 half a dozen others elsewhere
7384 * fixed bug 13: Floating point infinities are now supported again.
7385 They might still be a little bit flaky, but thanks to bug reports
7386 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
7387 as flaky as they were.
7388 * The --noprogrammer command line option is now supported. (Its
7389 behavior is slightly different in detail from what the old man
7390 page claimed it would do, but it's still appropriate under the
7391 same circumstances that the man page talks about.)
7392 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
7393 are now supported, and enabled by default. Thus, the compiler can
7394 handle many floating point and complex operations much less
7395 inefficiently. (Thus e.g. you can implement a complex FFT
7397 * The compiler now detects type mismatches between DECLAIM FTYPE
7398 and DEFUN better, and implements CHECK-TYPE more correctly, and
7399 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
7400 thanks to patches from Martin Atzmueller.
7401 * various fixes to make the cross-compiler more portable to
7402 ANSI-conforming-but-different cross-compilation hosts (notably
7403 Lispworks for Windows, following bug reports from Arthur Lemmens)
7404 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
7405 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
7406 fixed thanks to Pierre Mai's CMU CL patches.
7407 * fixes to keep the system from overflowing internal counters when
7408 it tries to use i/o buffers larger than 16M bytes
7409 * fixed bug 45a: Various internal functions required to support
7410 complex special functions have been merged from CMU CL sources.
7411 (When I was first setting up SBCL, I misunderstood a compile-time
7412 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
7413 * improved support for type intersection and union, fixing bug 12
7414 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
7415 more obscure bugs as well
7416 * some steps toward byte-compiling non-performance-critical
7417 parts of the system, courtesy of patches from Martin Atzmueller
7418 * Christophe Rhodes has made some debian packages of sbcl at
7419 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
7420 From his sbcl-devel e-mail of 2001-04-08 they're not completely
7421 stable, but are nonetheless usable. When he's ready, I'd be happy
7422 to add them to the SourceForge "File Releases" section. (And if
7423 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
7424 * new fasl file format version number (because of changes in
7425 internal representation of (OR ..) types to accommodate the new
7426 support for (AND ..) types, among other things)
7428 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
7429 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
7431 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
7433 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
7434 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
7435 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
7436 * DESCRIBE now works on structure objects again.
7437 * Most function call argument type mismatches are now handled as
7438 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
7439 know whether the function will be redefined before the call is
7440 executed. (The compiler could flag local calls with full WARNINGs,
7441 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
7442 it doesn't keep track of enough information to know whether calls
7443 are local in this sense.)
7444 * Compiler output is now more verbose, with messages truncated
7445 later than before. (There should be some supported way for users
7446 to override the default verbosity, but I haven't decided how to
7447 provide it yet, so this behavior is still controlled by the internal
7448 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
7449 src/compiler/ir1util.lisp.)
7450 * Fasl file format version numbers have increased again, because
7451 support for the Gray streams extension changes the layout of the
7452 system's STREAM objects.
7453 * The Gray subclassable streams extension now works, thanks to a
7454 patch from Martin Atzmueller.
7455 * The full LOAD-FOREIGN extension (not just the primitive
7456 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
7457 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
7458 but like most other programs, it defaults to copying the Unix
7459 environment from the original process instead of starting the
7460 new process in an empty environment.
7461 * Extensions which manipulate the Unix environment now support
7462 an :ENVIRONMENT keyword option which doesn't smash case or
7463 do other bad things. The CMU-CL-style :ENV option is retained
7464 for porting convenience.
7465 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
7466 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
7468 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
7470 * A patch from Martin Atzmueller seems to have solved the SIGINT
7471 problem, and as far as we know, signal-handling now works cleanly.
7472 (If you find any new bugs, please report them!)
7473 * The system no longer defaults Lisp source file names to types
7474 ".l", ".cl", or ".lsp", but only to ".lisp".
7475 * The compiler no longer uses special default file extensions for
7476 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
7477 seems to expect a single default extension for all compiled code,
7478 and there's no compelling reason to try to stretch the standard
7479 to allow two different extensions.) Instead, byte-compiled files
7480 default to the same extension as native-compiled files.
7481 * Fasl file format version numbers have increased again, because
7482 a rearrangement of internal implementation packages made some
7483 dumped symbols in old fasl files unreadable in new cores.
7484 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
7485 many fewer weird special cases.
7486 * Bug #17 (differing COMPILE-FILE behavior between logical and
7487 physical pathnames) has been fixed, and some related misbehavior too,
7488 thanks to a patch from Martin Atzmueller.
7489 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
7490 by Tim Moore, ported to SBCL by Martin Atzmueller.
7491 * Martin Atzmueller fixed several filesystem-related problems,
7492 including bug #36, in part by porting CMU CL patches, which were
7493 written in part by Paul Werkowski.
7494 * More compiler warnings in src/runtime/ are gone, thanks to
7495 more patches from Martin Atzmueller.
7496 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
7499 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
7501 * DESCRIBE now works on CONDITION objects.
7502 * The debugger now handles errors which arise when trying to print
7503 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
7505 * The build system now uses an additional file, customize-target-features.lisp,
7506 to allow local modifications to the target *FEATURES* list. (The point of
7507 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
7508 debugging features enabled, without having to worry about propagating it
7509 into everyone's system when I do a "cvs update".) When no
7510 customize-target-features.lisp file exists, the target *FEATURES* list
7511 should be constructed the same way as before.
7512 * fixed bugs in DEFCONSTANT ANSI-compatibility:
7513 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
7514 warn about behavior which is undefined under the ANSI spec. Note: This
7515 is specified by ANSI, but it's not very popular with programmers.
7516 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
7517 macro in the SBCL sources for an example of a workaround which you
7518 might use to make portable ANSI-standard code which does what you want.
7519 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
7520 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
7521 when it's used as a non-toplevel form. (This is required in order
7522 to implement the DEFCONSTANT-EQX macro.)
7523 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
7524 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
7525 funny things, due to bugs in the implementation of EVAL-WHEN
7526 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
7527 non-toplevel DEFCONSTANTs are uncommon.)
7528 * The core file version number and fasl file version number have been
7529 incremented, because the old noncompliant DEFCONSTANT behavior involved
7530 calling functions which no longer exist, and because I also took the
7531 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
7532 * fixed bug 1 (error handling before read-eval-print loop starts), and
7533 redid debugger restarts and related debugger commands somewhat while
7535 ** The QUIT debugger command is gone, since it did something
7536 rather different than the SB-EXT:QUIT command, and since it never
7537 worked properly outside the main toplevel read/eval/print loop.
7538 Invoking the new TOPLEVEL restart provides the same functionality.
7539 ** The GO debugger command is also gone, since you can just invoke
7540 the CONTINUE restart directly instead.
7541 ** The TOP debugger command is also gone, since it's redundant with the
7542 FRAME 0 command, and since it interfered with abbreviations for the
7544 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
7546 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
7547 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
7548 some porting work by Martin Atzmueller)
7549 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
7550 with a boatload of patches which he ported to SBCL. Now that those
7552 ** The system tries to make sure that its low-priority messages
7553 are prefixed by semicolons, to help people who like to use
7554 syntax highlighting in their ILISP buffer. (This patch
7555 was originally due to Raymond Toy.)
7556 ** The system now optimizes INTEGER-LENGTH better, thanks to more
7557 patches originally written by Raymond Toy.
7558 ** The compiler understands coercion between single-value and
7559 multiple-VALUES type expressions better, getting rid of some very
7560 weird behavior, thanks to patches originally by Robert MacLachlan
7561 and Douglas Crosher.
7562 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
7563 lambda lists, thanks to a patch originally by Pierre Mai.
7564 ** The system no longer bogusly warns about "abbreviated type
7566 ** The compiler gets less confused by inlining and RETURN-FROM,
7567 thanks to some patches originally by Tim Moore.
7568 ** The system no longer hangs when dumping circular lists to fasl
7569 files, thanks to a patch originally from Douglas Crosher.
7570 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
7571 undefined function error.
7572 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
7573 in structure slot initforms) for now, documented workaround instead:-|
7574 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
7575 * fixed bug 5: added stubs for various Gray stream functions called
7576 in the not-a-CL:STREAM case, so that even when Gray streams aren't
7577 installed, at least appropriate type errors are generated
7578 * fixed bug 8: better reporting of various PROGRAM-ERRORs
7579 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
7580 consistently in DEFMETHOD forms.
7581 * removed bug 21 from BUGS, since Martin Atzmueller points out that
7582 it doesn't seem to affect SBCL after all
7583 * The C runtime system now builds with better optimization and many
7584 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
7586 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
7588 * The system is now under CVS at SourceForge (instead of the
7589 CVS repository on my home machine).
7590 * The new signal handling code has been tweaked to treat register
7591 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
7592 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
7593 downstream, e.g. in debug-int.lisp, has implicit dependencies
7594 on the unsignedness of integer representation of machine words,
7595 and that caused the system to bomb out with infinite regress
7596 when trying to recover from type errors involving signed values,
7597 e.g. (BUTLAST '(1 2 3) -1).)
7598 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
7599 (This was one of the bugs Peter Van Eynde reported back in July.)
7600 * The system now uses code inspired by Colin Walters' O(N)
7601 implementation of MAP (from the cmucl-imp@cons.org mailing
7602 list, 2 September 2000) when it can't use a DEFTRANSFORM to
7603 inline the MAP operation, and there is more than one
7604 sequence argument to the MAP call (so that it can't just
7605 do ETYPECASE once and for all based on the type of the
7606 single sequence argument). (The old non-inline implementation
7607 of the general M-argument sequence-of-length-N case required
7608 O(M*N*N) time when any of the sequence arguments were LISTs.)
7609 * The QUIT :UNIX-CODE keyword argument has been renamed to
7610 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
7611 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
7613 * Raymond Wiker's patches to port dynamic loading from Linux to
7614 FreeBSD have been added.
7615 * The BUGS file is now more nearly up to date, thanks in large part
7616 to Martin Atzmueller's review of it.
7617 * The debugger now flushes standard output streams before it begins
7618 its output ("debugger invoked" and so forth).
7619 * The core version number and fasl file version number have both
7620 been incremented, because of incompatible changes in the layout
7622 * FINISH-OUTPUT is now called more consistently on QUIT. (It
7623 used to not be called for a saved Lisp image.)
7624 * Martin Atzmueller's version of a patch to fix a compiler crash,
7625 as posted on sbcl-devel 13 September 2000, has been installed.
7626 * Instead of installing Martin Atzmueller's patch for the
7627 compiler transform for SUBSEQ, I deleted the compiler transform,
7628 and transforms for some similar consing operations.
7629 * A bug in signal handling which kept TRACE from working on OpenBSD
7631 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
7632 away by constant folding
7633 * The system now defines its address space constants in one place
7634 (in the Lisp sources), and propagates them automatically elsewhere
7635 (through GENESIS and the sbcl.h file). Therefore, patching the
7636 address map is less unnecessarily tedious and error-prone. The
7637 Lisp names of address space constants have also been systematized.
7638 * CVS tags like dollar-Header-dollar have been removed from
7639 the sources, because they have never saved me trouble and
7640 they've been source of trouble working with patches and other
7641 diff-related operations.
7642 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
7643 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
7645 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
7647 * The system has been ported to OpenBSD.
7648 * The system now compiles with a simple "sh make.sh" on the systems
7649 that it's supported on. I.e., now you no longer need to tweak
7650 text in the target-features.lisp-expr and symlinks in src/runtime/
7651 by hand, the make.sh takes care of it for you.
7652 * The system is no longer so grossly inefficient when compiling code
7653 involving vectors implemented as general (not simple) vectors (VECTOR T),
7654 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
7655 which dares to use the various sequence functions on non-simple
7656 vectors, takes less of a performance hit.
7657 * There is now a primitive type predicate VECTOR-T-P
7658 to test for the (VECTOR T) type, so that e.g.
7659 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
7660 can now be compiled with some semblance of efficiency. (The old code
7661 turned the type declaration into a full call to %TYPEP at runtime!)
7662 * AREF on (VECTOR T) is still not fast, since it's still compiled
7663 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
7664 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
7665 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
7666 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
7667 without making full calls to SUBTYPEP at runtime.
7668 (Some analogous efficiency issues for non-simple vectors specialized to
7669 element types other than T, or for non-simple multidimensional arrays,
7670 have not been addressed. They could almost certainly be handled the
7671 same way if anyone is motivated to do so.)
7672 * The changes in array handling break binary compatibility, so
7673 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
7674 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
7675 instead of (VALUES T T).
7676 * By following the instructions that Dan Barlow posted to sbcl-devel
7677 on 2 July 2000, I was able to enable primitive dynamic object
7678 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
7679 functionality is not implemented (since it calls ld to resolve
7680 library references automatically, requiring RUN-PROGRAM for its
7681 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
7682 try to resolve library references) is now supported.
7683 * The system now flushes the standard output streams when it terminates,
7684 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
7685 them at several other probably-convenient times, e.g. in each pass of
7686 the toplevel read-eval-print loop, and after evaluating a form given
7687 as an "--eval" command-line option. (These changes were motivated by a
7688 discussion of stream flushing issues on cmucl-imp in August 2000.)
7689 * The source transform for TYPEP of array types no longer assumes
7690 that an array whose element type is a not-yet-defined type
7691 is implemented as an array of T, but instead punts, so that the
7692 type will be interpreted at runtime.
7693 * There is now some support for cross-compiling in make.sh: each of
7694 the phases of make.sh has its own script. (This should be transparent
7695 to people doing ordinary, non-cross-compile builds.)
7696 * Since my laptop doesn't have hundreds of megabytes of memory like
7697 my desktop machine, I became more motivated to do some items on
7698 my to-do list in order to reduce the size of the system a little:
7699 ** Arrange for various needed-only-at-cold-init things to be
7700 uninterned after cold init. To support this, those things have
7701 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
7702 symbols with such names are now uninterned after cold init).
7703 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
7704 fasl files for cold load.
7705 ** Remove the old compiler structure pooling code (which used to
7706 be conditional on the target feature :SB-ALLOC) completely.
7707 ** Redo the representation of some data in cold init to be more compact.
7708 (I also looked into supporting byte compiled code at bootstrap time,
7709 which would probably reduce the size of the system a lot, but that
7710 looked too complicated, so I punted for now.)
7711 * The maximum signal nesting depth in the src/runtime/ support code has
7712 been reduced from 4096 to 256. (I don't know any reason for the very
7713 large old value. If the new smaller value turns out to break something,
7714 I'll probably just bump it back up.)
7715 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
7717 * Many, many bugs reported by Peter Van Eynde have been added to
7718 the BUGS list; some have even been fixed.
7719 * While enabling dynamic object file loading, I tried to make the
7720 code easier to understand, renaming various functions and variables
7721 with less ambiguous names, and changing some function calling
7722 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
7723 * While trying to figure out how to do the OpenBSD port, I tried to
7724 clean up some of the code in src/runtime/. In particular, I dropped
7725 support for non-POSIX signal handling, added various comments,
7726 tweaked the code to reduce the number of compilation warnings, and
7727 renamed some files to increase consistency.
7728 * To support the new automatic configuration functionality in make.sh,
7729 the source file target-features.lisp-expr has been replaced with the
7730 source file base-target-features.lisp-expr and the machine-generated
7731 file local-target-features.lisp-expr.
7732 * fixed a stupid quoting error in make.sh so that using CMU CL
7733 "lisp -batch" as cross-compilation host works again
7735 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
7737 * DESCRIBE no longer tries to call itself recursively to describe
7738 bound/fbound values, so that it no longer fails on symbols which are
7739 bound to themselves (like keywords, T, and NIL).
7740 * DESCRIBE now works on generic functions.
7741 * The printer now prints less-screwed-up representations of closures
7742 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
7743 * A private symbol is used instead of the :EMPTY keyword previously
7744 used to mark empty slots in hash tables. Thus
7745 (DEFVAR *HT* (MAKE-HASH-TABLE))
7746 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
7747 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
7748 now does what ANSI says that it should. (You can still get
7749 similar noncompliant behavior if bang on the hash table
7750 implementation with all the symbols you get back from
7751 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
7752 This breaks binary compatibility, since tests for equality to
7753 :EMPTY are wired into things like the macroexpansion of
7754 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
7756 * There's now a minimal placeholder implementation for CL:STEP,
7757 as required by ANSI.
7758 * An obscure bug in the interaction of the normal compiler, the byte
7759 compiler, inlining, and structure predicates has been patched
7760 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
7761 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
7763 * Missing ordinary arguments in a macro call are now detected even
7764 when the macro lambda list contains &KEY or &REST.
7765 * The debugger no longer complains about encountering the top of the
7766 stack when you type "FRAME 0" to explicitly instruct it to go to
7767 the top of the stack. And it now prints the frame you request even
7768 if it's the current frame (instead of saying "You are here.").
7769 * As specified by ANSI, the system now always prints keywords
7770 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
7772 * The default initial SIZE of HASH-TABLEs is now smaller.
7773 * Type information from CLOS class dispatch is now propagated
7774 into DEFMETHOD bodies, so that e.g.
7775 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7777 is now basically equivalent to
7778 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7779 (DECLARE (TYPE SINGLE-FLOAT X))
7781 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
7782 operation, without having to do run-time type dispatch.
7783 * The macroexpansion of DEFMETHOD has been tweaked so that it has
7784 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
7785 * Since I don't seem to be making big file reorganizations very often
7786 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
7787 is overflowing my ability to conveniently back them up), I've finally
7788 checked the system into CVS. (The CVS repository is on my home system,
7789 not at SourceForge -- putting it on SourceForge might come later.)
7790 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
7791 high-level GC-NOTIFY-FOO functions send their output. (There's
7792 still very little control of where low-level verbose GC functions
7793 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
7794 less than it used to -- the GC-NOTIFY-FOO functions are now under
7795 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
7796 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
7797 in only one place in the source code, and propagates it automatically
7798 everywhere that it's needed. Thus e.g. when I bump the version from
7799 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
7800 * The C source files now include boilerplate legalese and documentation
7801 at the head of each file (just as the Lisp source files already did).
7802 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
7803 to his page will be replaced with a link to his new CLiki service.
7805 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
7807 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
7808 * The build process now looks for GNU make under the default name "gmake",
7809 instead of "make" as it used to. If GNU make is not available as "gmake"
7810 on your system, you can change this default behavior by setting the
7811 GNUMAKE environment variable.
7812 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
7813 can build without error under CMU CL.
7815 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
7817 * There is now a partial SBCL user manual (with some new text and some
7818 text cribbed from the CMU CL manual).
7819 * The beginnings of a profiler have been added (starting with the
7820 CMU CL profiler and simplifying and cleaning up). Eventually the
7821 main interface should be through the TRACE macro, but for now,
7822 it's still accessed through vaguely CMU-CL-style functions and macros
7823 exported from the package SB-PROFILE.
7824 * Some problems left over from porting CMU CL to the new
7825 cross-compilation bootstrap process have been cleaned up:
7826 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
7827 instead of SB!XC:DEFMACRO, compounded by an oversight on my
7828 part when getting rid of the compiler *BACKEND* stuff.)
7829 ** The value of *NULL-TYPE* was screwed up, because it was
7830 being initialized before the type system knew the final
7831 definition of the 'NULL type. This screwed up several key
7832 optimizations in the compiler, causing inefficiency in all sorts
7833 of places. (I found it because I wanted to understand why
7834 GET-INTERNAL-RUN-TIME was consing.)
7835 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7836 PROCLAIM FTYPE information. Unfortunately this broke binary
7837 compatibility again, since now the forms output by DEFGENERIC
7838 to refer to functions which didn't exist in 0.6.3.
7839 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7840 can use the new (as of 0.6.3) transform for SOME into MAP into
7842 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7843 values to (INTEGER 0 1000000), so that the time code will no longer
7844 occasionally get blown up by Linux returning 1000000 microseconds
7845 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7846 its output conform to the ANSI spec. (Alas, this makes its output
7847 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7848 * A full call to MAP NIL with a single sequence argument no longer conses.
7849 * fixes to problems pointed out by Martin Atzmueller:
7850 * The manual page no longer talks about multiprocessing as though
7851 it were currently supported.
7852 * The ILISP support patches have been removed from the distribution,
7853 because as of version 5.10.1, ILISP now supports SBCL without us
7854 having to maintain patches.
7855 * added a modified version of Raymond Toy's recent CMU CL patch for
7856 EQUALP comparison of HASH-TABLE
7858 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7860 * The system still can't cross-compile itself with
7861 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7862 entails), but at least it can compile more of itself that way
7863 than it used to be able to, and various buglets which were uncovered
7864 by trying to cross-compile itself that way have now been fixed.
7865 * This release breaks binary compatibility again. This time
7866 at least I've incremented the FASL file format version to 2, so that the
7867 problem can be detected reliably instead of just causing weird errors.
7868 * various new style warnings:
7869 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7870 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7871 ** using the lexical binding of a variable named in the *FOO* style
7872 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7873 as specified by ANSI.
7874 * *RANDOM-STATE* is no longer automatically initialized from
7875 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7876 default behavior of the system is to repeat its behavior every time
7877 it's run. If you'd like to change this behavior, you can always
7878 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7879 old convention there was no comparably easy way to get the system to
7880 repeat its behavior every time it was run.
7881 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7882 FTYPE declarations has been removed, in favor of their ANSI
7883 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7884 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7885 the types of their sequence arguments can be determined at compile time.
7886 This is done through a new open code expansion for MAP which eliminates
7887 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7888 argument types can be determined at compile time.
7889 * The optimizer now transforms COERCE into an identity operation when it
7890 can prove that the coerced object is already of the correct type. (This
7891 can be a win for machine generated code, including the output of other
7892 optimization transforms, such as the MAP transform above.)
7893 * Credit information has been moved from source file headers into CREDITS.
7894 * Source file headers have been made more standard.
7895 * The CASE macro now compiles without complaining even when it has
7898 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7900 * (Note that the way that the PCL macroexpansions were rewritten
7901 to accommodate the change in DEFGENERIC below breaks binary
7902 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7903 not run under sbcl-0.6.2. Once we get out of alpha releases,
7904 i.e. hit release 1.0.0, we'll probably try to maintain binary
7905 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7906 and sbcl-1.4.4. Until then, however, it might be fairly common
7907 for maintenance releases to break binary compatibility.)
7908 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7910 * The reporting of unhandled signals has been changed to print some
7911 explanatory text as well as the report form. (Previously only
7912 the report form was printed.)
7913 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7914 it defines, so that the compiler no longer issues undefined function
7915 warnings for compiled-but-not-yet-loaded generic functions.
7916 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7917 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7918 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7919 section of the ANSI spec are supported.
7920 * The "" nickname for the "KEYWORD" package has been removed.
7921 The reader still handles symbol tokens which begin with a package marker
7922 as keywords, but it doesn't expose its mechanism for doing so in the
7923 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7924 * The system now issues STYLE-WARNINGs for contradictory TYPE
7925 proclamations. (Warnings for contradictory FTYPE proclamations would
7926 be nice too, but those can't be done usefully unless the type system
7927 is made smarter about FUNCTION types.)
7928 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7929 systematized, so that "*target-*.lisp is supposed to exist only on the
7930 target and imply that there's a related file which exists on the
7931 host, and *host-*.lisp is supposed to exist only on the host and imply
7932 that there's a related file which exists on the target. This involves a
7933 lot of renaming. Hopefully the acute confusion caused by the renaming
7934 will be justified by the reduction in chronic confusion..
7935 ** runtime-type.lisp -> early-target-type.lisp
7936 ** target-type.lisp -> late-target-type.lisp
7937 ** early-host-format.lisp -> early-format.lisp
7938 ** late-host-format.lisp -> late-format.lisp
7939 ** host-error.lisp -> misc-error.lisp
7940 ** early-error.lisp -> early-target-error.lisp
7941 ** late-error.lisp -> late-target-error.lisp
7942 ** host-defboot.lisp -> early-defboot.lisp
7943 ** code/misc.lisp -> code/target-misc.lisp
7944 ** code/host-misc.lisp -> code/misc.lisp
7945 ** code/numbers.lisp -> code/target-numbers.lisp
7946 ** code/early-numbers.lisp -> numbers.lisp
7947 ** early-host-type.lisp -> early-type.lisp
7948 ** late-host-type.lisp -> late-type.lisp
7949 ** host-typep.lisp -> typep.lisp
7950 ** load.lisp -> target-load.lisp
7951 ** host-load.lisp -> load.lisp
7952 ** host-disassem.lisp -> disassem.lisp
7953 ** host-insts.lisp -> insts.lisp
7954 ** byte-comp.lisp -> target-byte-comp.lisp
7955 ** host-byte-comp.lisp -> byte-comp.lisp
7956 ** host-signal.lisp -> signal.lisp
7957 ** host-defstruct.lisp -> defstruct.lisp
7958 ** late-target-type.lisp -> deftypes-for-target.lisp
7959 Furthermore, several other previously target-only files foo.lisp (e.g.
7960 hash-table.lisp and random.lisp) have been split into a target-and-host
7961 foo.lisp file and a target-only target-foo.lisp file, with their key type
7962 definitions in the target-and-host part, so that the cross-compiler will
7963 know more about target types.
7964 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7965 gone away. In their place are various *BACKEND-FOO* variables
7966 corresponding to the slots of the old structure.
7967 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7968 into the target SBCL has been fixed.
7969 * The chill.lisp system for loading cold code into a running SBCL
7971 * Support for the CMU CL "scavenger hook" extension has been removed.
7972 (It was undocumented and unused in the CMU CL sources that SBCL was
7973 derived from, and stale in sbcl-0.6.1.)
7974 * Various errors in the cross-compiler type system were detected
7975 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7976 (enabling various consistency checks). Many of them were fixed,
7977 but some hard problems remain, so the compiler is back to
7978 running without *TYPE-SYSTEM-INITIALIZED* for now.
7979 * As part of the cross-compiler type system cleanup, I implemented
7980 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7981 * I have started adding UNCROSS calls throughout the type system
7982 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7983 on cross-compiler input files will be able to go away, and various
7985 * CONSTANTP now returns true for quoted forms (as explicitly required
7988 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7990 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7991 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7992 (MAKE-LIST -1). In the longer term, it ought to become true
7993 that declarations are assertions even at SAFETY 1. For now, it's not
7994 quite true even at SAFETY 3, but it's at least more nearly true..
7995 (Note that this change seems to increases the size of the system by
7996 O(5%) and to decrease the speed of the compiler by 20% or more.)
7997 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7998 for the problem of printing dozens of lines of distracting information
7999 about low-level system machinery as part of the top stack frame
8000 on entry to the debugger when an undefined function was called.
8001 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
8002 is not reset to COMMON-LISP-USER.
8003 * Compilation of stuff related to dyncount.lisp has been made conditional
8004 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
8005 smaller. The various dyncount-related symbols have been moved into
8006 a new "SB-DYNCOUNT" package.
8007 * tty-inspect.lisp has been renamed to inspect.lisp.
8008 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
8009 feature has gone away. (When we eventually port to other flavors of
8010 libc and/or Unix, we'll try to make the differences between flavors
8011 invisible at the user level.)
8012 * Various other *FEATURES* tags, and/or their associated conditionals,
8013 have been removed if obsolescent, or given better documentation, or
8014 sometimes given more-mnemonic names.
8016 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
8018 * tidied up "make.sh" script
8019 * tidied up system directory structure
8020 * better "clean.sh" behavior
8021 * added doc/FOR-CMUCL-DEVELOPERS
8022 * many many small tweaks to output format, e.g. removing possibly-confusing
8023 trailing #\. character in DESCRIBE-INSTANCE
8024 * (EQUALP #\A 'A) no longer signals an error.
8025 * new hashing code, including EQUALP hashing
8026 * tidied up Lisp initialization and toplevel
8027 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
8028 * command line argument processing
8029 * added POSIX-GETENV function to deal with Unix-ish environment variables
8030 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
8031 terminating SBCL on EOF
8032 * non-verbose GC by default
8033 * There is no more "sbcl" shell script; the sbcl file is now the C
8034 runtime executable (just like CMU CL).
8035 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
8037 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
8038 symbol and package information as Lisp native symbol and package objects
8039 instead of strings naming symbols and strings naming packages. This way,
8040 whenever packages are renamed (as in warm init), debug information is
8041 transformed along with everything else.
8042 * tweaked the optimization policy declarations which control the building
8043 of SBCL itself. Now, among other things, the system no longer saves
8044 source location debugging information. (This helps two problems at once
8045 by reducing SBCL size and by keeping SBCL from trying to look for its
8046 sources -- which may not exist -- when reporting errors.)
8047 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
8048 debugging and testing purposes
8049 * cleaned up printing, making the printer call PRINT-OBJECT for
8050 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
8051 methods, giving nearly-ANSI behavior
8052 * converted almost all special variables to use *FOO* naming convention
8053 * deleted PARSE-TIME functionality, since it can be done portably
8054 * moved some files out of cold init into warm init
8055 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
8057 * regularized formatting of source files
8058 * added an install.sh script
8059 * fixed ridiculous memory usage of cross-compiler by making
8060 compiler/alloc.lisp not try to do pooling unless it can hook
8061 itself into the GC of the cross-compilation host. Now the system
8062 builds nicely on my old laptop.
8063 * added :SB-ALLOC in target-features.lisp-expr
8064 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
8065 was not implemented)
8066 * re-did condition handling and note reporting in the compiler. Notes
8067 are no longer handled by signalling conditions. Style warnings
8068 and warnings are handled more correctly and reported in such a way
8069 that it's easy to find one or the other in your output (so that you
8070 can e.g. figure out which of many problems caused COMPILE-FILE to
8072 * changed the severity of several compiler warnings from full WARNING
8073 to STYLE-WARNING in order to conform with the ANSI spec; also changed
8074 compiler note reporting so that it doesn't use the condition system
8075 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
8076 COMPILE-FILE command)
8077 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
8078 function. As a consequence, START-BLOCK and END-BLOCK declarations are
8079 no longer supported, since their implementation was deeply intertwingled
8080 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
8081 * removed bogus "support" for compiler macros named (SETF FOO), and
8082 removed the compiler macro for SETF INFO (but only after making a fool
8083 of myself on the cmucl-imp mailing list by posting a bogus patch for
8084 DEFINE-COMPILER-MACRO..)
8085 * Compiled files containing forms which have side effects on the Lisp
8086 reader (such as DEFPACKAGE forms) are now handled more correctly.
8087 (Compiler queuing of top level lambdas has been suppressed by setting
8088 *TOP-LEVEL-LAMBDA-MAX* to 0. )
8089 * deleted various currently-unused source files, e.g. gengc.lisp. They
8090 may be added back at some point e.g. when porting to other architectures,
8091 but until they are it's distracting to distribute them and to try to
8093 * deleted "UNCROSS couldn't recurse through.." style warnings, since
8094 there were so many of them they're just distractions, and UNCROSS is
8095 known to be able to handle the current sources
8096 * moved PROFILE functionality into TRACE, so that it will be clear
8097 how the wrapping and unwrapping of functions when you profile them
8098 interacts with the wrapping and unwrapping of functions when you
8099 trace them. (Actually, the functionality isn't there yet, but at least
8100 the interface specification is there. Hopefully, the functionality will
8101 arrive with some future maintenance release.)
8102 * removed host-oops.lisp
8103 * changed signature of QUIT function to allow UNIX-CODE argument
8104 * fixed READ-SEQUENCE bug
8105 * tweaked verbose GC output so that it looks more like the progress
8106 output that ANSI specifies for functions like LOAD
8107 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
8108 * added <http://sbcl.sourceforge.com> to the banner information printed by