1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
3 changes relative to sbcl-1.4.2:
4 * enhancement: SLEEP respects deadlines established by SB-SYS:WITH-DEADLINE.
5 * bug fix: DECODE-TIMEOUT and operators accepting a timeout no longer signal
6 an error when called with an argument that is of type (real 0) but not
7 (unsigned-byte 62) (lp#1727789)
8 * bug fix: fixed heap exhaustion bug when consing millions of small objects
10 changes in sbcl-1.4.2 relative to sbcl-1.4.1:
11 * minor incompatible change: SB-EXT:QUIT is no longer marked as deprecated
12 and behaves like SB-EXT:EXIT.
13 * enhancement: ASDF updated to 3.3.1. The ASDF release is dedicated to
14 the late Elias Pipping who put enormous amounts of work into it despite
15 his terminal illness. Thank you and rest in peace. (lp#1681201)
16 * enhancement: alien routines compiled with '-fsanitize=thread' and/or
17 '-fsanitize=memory' cause fewer false positives in error reporting.
18 * optimization: fewer instances of consing float constants at runtime.
19 * bug fix: a number of compiler bugs detected by Paul F. Dietz' randomized
20 tester. (lp#1731503, lp#1730699, lp#1723993, lp#1730434, lp#1661911,
21 lp#1729639, lp#1729471, lp#1728692)
22 * bug fix: better errors from NAMESTRING and friends on pathnames with no
23 namestrings. (lp#792154)
24 * bug fix: EQUAL and EQUALP compiler transforms were too confident in
25 deriving a result. (lp#1732277, lp#1732225)
26 * bug fix: FILL sometimes returned the underlying data vector rather than
27 the given array. (lp#1732553)
28 * bug fix: SEARCH returned the wrong answer in some cases. (lp#1732952)
29 * bug fix: the type (COMPLEX INTEGER) behaves more as specified by Function
30 TYPEP, which has stronger constraints than System Class COMPLEX.
31 (Reported by Eric Marsden, lp#1733400)
33 changes in sbcl-1.4.1 relative to sbcl-1.4.0:
34 * optimization: faster foreign callbacks.
35 * enhancement: complex arrays can be stack allocated.
36 * enhancement: PROCESS-KILL now exists on win32 and PROCESS-PID actually
38 * optimization: the register allocation method used by the compiler when
39 optimizing for speed is now faster for functions with large bodies.
40 * bug fix: SB-INTROSPECT:ALLOCATION-INFORMATION works on big-endian CPUs
41 (fixes lp#490490 for real rather than by disabling a test)
42 * bug fix: code objects and bignums of large enough size to be placed
43 on GC pages without any other object no longer cause accidental copying
44 during garbage collection. (gencgc only)
45 * bug fix: sb-fasteval failure with 0-argument lambdas (lp#1722715)
46 * bug fix: RUN-PROGRAM doesn't leak handles on win32 and PROCESS-CLOSE
47 doesn't crash. (lp#1724472)
49 changes in sbcl-1.4.0 relative to sbcl-1.3.21:
50 * minor incompatible change: DESTRUCTURING-BIND treats non-toplevel () as
51 nested empty pattern. This seems to be what the standard mandates, so
52 conforming code should not be affected.
53 * ehancement: (GC :GEN 7) with gencgc will zero-fill dead pseudo-static
54 objects so that they do not spuriously cause reachability of objects that
55 would have been otherwise dead.
56 * enhancement: PROCESS-STATUS now tracks stopped and continued processes
57 properly (also fixes lp#1624941, based on patch by Elias Pipping).
58 * bug fix: INSPECT handles errors signaled while printing slot
60 * bug fix: DESCRIBE works on classes like it used to.
61 * bug fix: *LOAD-PATHNAME* and *LOAD-TRUENAME* are bound to pathnames
62 when processing a sysinit or userinit file
63 * bug fix: save-lisp-and-die is able to collect more garbage on non-x86oid
65 * bug fix: fixed out-of-bounds array read in optimized POSITION on bit-vectors
66 * bug fix: signal emulation respects the 128-byte stack red zone on x86-64
69 changes in sbcl-1.3.21 relative to sbcl-1.3.20:
70 * minor incompatible change: the CLOBBER-IT restart for defstruct redefintion
71 has been removed after a 15 year deprecation cycle. Use the new name,
72 RECKLESSLY-CONTINUE. Note also that this restart is hidden if deemed unsafe
73 due to altered placement of untagged slots in the structure.
74 * enhancement: the assignment of -DSBCL_PREFIX= in src/runtime/GNUmakefile
75 can be removed as a local patch, which results in an sbcl executable
76 that finds its core file relative to itself by looking in "../lib/sbcl".
77 * enhancement: backends using the generational GC are able to relocate
78 dynamic space anywhere the operating system places it.
79 This feature can be disabled by removing :relocatable-heap from the
80 build configuration. Not supported on Windows.
81 * enhancement: DEFMETHOD no longer signals IMPLICIT-GENERIC-FUNCTION-WARNING.
82 * enhancement: better type conflict detection for high order functions, e.g.
83 (find x "123" :test #'=)
84 * enhancement: the tabular output of ROOM is aligned dynamically, preventing
85 misaligned tables for larger sizes or counts.
86 * enhancement: ROOM reports on immobile space if applicable.
87 * optimization: optimized external-format routines.
88 * bug fix: SB-INTROSPECT:ALLOCATION-INFORMATION returns :IMMOBILE
89 instead of :FOREIGN for objects in immobile space.
90 * bug fix: dotted lists in special forms and function call forms signal
92 * bug fix: EQUALP hash tables with pathname keys now ignore internal slots.
93 (lp#1712944, reported by Jason Miller)
95 changes in sbcl-1.3.20 relative to sbcl-1.3.19:
96 * minor incompatible change: DEF{GENERIC,METHOD} no longer accept some
97 illegal lambda lists such as (defgeneric bar (foo &key foo)) or
98 (defgeneric baz (t)) that were accepted before.
99 * optimization: a valueless &AUX binding in a BOA constructor does not
100 force all slots reads in safe code to perform a full type check.
101 * optimization: ATOMIC-PUSH and ATOMIC-POP generate better code
102 * bug fix: the low-level debugger would erroneously print - or not print
103 as the case may be - "(bad-address)" for some objects depending whether
104 the --dynamic-space-size argument was used at Lisp startup
105 * bug fix: a DEFCONSTANT with a non non-eql-comparable object as the value
106 could cause miscompilation if that constant appeared as the default
107 expression for an &OPTIONAL binding
108 * bug fix: generic function lambda lists are now checked for repeated
109 and otherwise illegal entries. (lp#1704114)
110 * bug fix: setting gencgc_verbose = 1 could cause deadlock in fprintf()
111 depending on the platform's stdio implementation. The relevant code
112 has been changed to use snprintf() and write() instead.
114 changes in sbcl-1.3.19 relative to sbcl-1.3.18:
115 * enhancement: specialized arrays can be printed readably without using
117 * enhancement: SB-DEBUG:PRINT-BACKTRACE truncates huge string arguments.
118 The full string remains available for inspection via (SB-DEBUG:ARG).
119 * bug fix: backtracing from several threads at once could fail
120 * bug fix: floating-point infinities could not be used as keys
121 in EQUALP hash tables. (lp#1696274)
122 * bug fix: random sb-fasteval failures. (lp#1642708)
123 * bug fix: align the stack in callback wrappers to defend against C
124 compiler over-aggressive use of SIMD. (lp#1697528)
125 * bug fix: don't try to find the class when reporting that a class does
126 not exist for a primitive type. (lp#1697226)
128 changes in sbcl-1.3.18 relative to sbcl-1.3.17:
129 * minor incompatible change: existing values of CFLAGS, ASFLAGS,
130 CPPFLAGS, and LINKFLAGS will be incorporated into C compiler
131 invocations when building from source.
132 * minor incompatible change: the result of WRITE-TO-STRING may be
133 a BASE-STRING if all characters written are of type BASE-CHAR.
134 * minor incompatible change: the broadcast stream with no output
135 streams is a singleton object. That object satisfies OPEN-STREAM-P
136 regardless of how many times CLOSE is invoked on it.
137 * enhancement: x86[-64] backends contain an experimental feature
138 which aids in demonstrating reachability of any object starting
139 from a tenured object or a thread stack by producing a proof
140 as a sequence of pointers to follow.
141 The file "tests/traceroot.test.sh" contains an example usage.
142 * enhancement: if the alien symbol "gc_coalesce_string_literals" is
143 set to 1 prior to SAVE-LISP-AND-DIE, then similar string constants
144 loaded from different fasl files may be collapsed to one object.
145 If the variable is set to 2, then additionally strings which are
146 STRING= in code resulting from COMPILE can be coalesced.
147 For instance, two functions returning the literal string "HI"
148 might return EQ strings after collapsing, which may be undesired
149 in a particular use. The flag pertains to gencgc only.
150 * enhancement: SXHASH values on pathnames are better distributed
151 * bug fix: MAKE-PATHNAME removes empty strings as components of a
152 directory, as is permitted: "Whenever a pathname is constructed
153 the components may be canonicalized if appropriate."
154 * optimization: various printer and FORMAT performance enhancements.
155 * bug fix: GET-FOREGROUND no longer fails in case all other interactive
156 threads exit (lp#1682671, reported by Syll)
157 * bug fix: RELEASE-FOREGROUND always removes the current thread from the
158 list of interactive threads. (lp#1682867, reported by Syll)
160 changes in sbcl-1.3.17 relative to sbcl-1.3.16:
161 * enhancement: memory overhead from the garbage collector's metadata
162 is reduced on 64-bit architectures; no change for 32-bit.
163 * enhancement: further garbage collector speedups affecting
164 pinned objects on conservative backends, and simple-vectors.
165 * enhancement: on Linux a custom handler for SIGSEGV can be called
166 for page faults outside of dynamic space by changing the C symbol
167 "sbcl_fallback_sigsegv_handler".
168 * bug fix: sb-cover does not lose source positions for AND/OR/COND.
169 * bug fix: random disassembler failures. (lp#1527931)
170 * The bundled sb-md5 contrib has been updated to release 2.0.4
171 which is licensed under Creative Commons CC0 per author's statement
172 https://github.com/pmai/md5/commit/fd134e71b71a10ab78905833a7cb9d4d6817c589
173 (Refer to NEWS and COPYING in the contrib/sb-md5 subdirectory)
175 changes in sbcl-1.3.16 relative to sbcl-1.3.15:
176 * optimization: various small tweaks give around 5% faster garbage
178 * bug fix: better detection of when an impossible code path does
179 not need a warning. (lp#1668619)
180 * bug fix: stronger attempts to disable position-independent
181 executable building. (lp#1668986, patch from Mark Wright)
182 * bug fix: OPEN :IF-EXISTS NIL signalled a condition on Windows.
183 (lp#1674437, reported by Jan Idzikowski)
185 changes in sbcl-1.3.15 relative to sbcl-1.3.14:
186 * minor incompatible change: the reader will when feasible create
187 new symbols using a BASE-STRING for the print name. Additionally,
188 string literals can favor the base-string type if desired, though
189 the default is to always return UTF-32 strings for compatibility.
190 A preference for base-string does not disable reading Unicode.
191 The choice is controlled via (SETF READTABLE-BASE-CHAR-PREFERENCE).
192 If Unicode was disabled at build time, this setting does nothing.
193 * enhancement: SBCL generates more debug information by default.
194 * enhancement: type errors provide context information, such as which
195 variable is being bound, which slot of which structure is being set.
196 * enhancement: if #+immobile-symbols is in build-time *FEATURES* (not
197 enabled by default), then symbols will never be moved in memory
198 except by SAVE-LISP-AND-DIE. Immobility has helpful implications for
199 code generation as well as interaction with foreign routines.
200 This feature can only be enabled if #+immobile-space is enabled.
201 * enhancement: undefined function errors can be restarted on x86-64, to
202 either retry calling the function again or call a user supplied function.
203 * enhancement: sb-ext:restrict-compiler-policy accepts an upper bound in
204 addition to a lower bound.
205 * enhancement: #+immobile-code improves the speed of function calling.
206 Some delay may be noticed when redefining an existing function
207 from a saved core file however.
208 * defaults change: sb-ext:*disassemble-annotate* default to NIL, due to its
210 * new feature: SB-LINKABLE-RUNTIME, allowing linking with extra object
211 files to help with delivery of executables. (Thanks to François-René
213 * bug fix: data race in GENTEMP fixed - it can no longer return the
214 same interned symbol to multiple threads if called concurrently
215 * bug fix: interrupting LOADing of FASLs does not leave functions without
216 source locations. (lp#540276)
217 * bug fix: DYNAMIC-EXTENT-declared results of NOTINLINE local functions were
218 treated as if they were actually stack allocated (lp#1659964)
219 * bug fix: correctly handle the case of a non-local exit within a function
220 terminating the extent of dynamic-extent, dynamic-bound variables in the
221 presence of multiple-values (lp#1655011)
222 * bug fix: handling of SB-SYS:WITH-PINNED-OBJECTS in the interpreters (both
223 sb-eval and sb-fasteval) now actually pins objects on gencgc.
224 * bug fix: AVX registers are preserved during exceptions on x86-64 macOS.
225 * bug fix: (directory "SOMETHING/*/**/MORE") is no longer equivalent to
226 (directory "SOMETHING/**/MORE")
227 * bug fix: better console IO on Windows (lp#1660906)
229 changes in sbcl-1.3.14 relative to sbcl-1.3.13:
230 * minor incompatible change: the SB-PCL walker no longer recognizes
231 macros expanding into a DECLARE expression. This is not a language change,
232 since ANSI forbids such usage (X3J13 issue DECLARE-MACROS:FLUSH).
233 * enhancement: for several macros such as MULTIPLE-VALUE-{BIND,SETQ}, COND,
234 DO{,*,LIST}, {RESTART,HANDLER}-{BIND,CASE}, *CASE, conditions signaled
235 during macroexpansion point to the form that caused the problem more
237 * enhancement: the "--noinform" command-line option inhibits output from
238 save-lisp-and-die in addition to removing the startup banner.
239 * bug fix: PROCESS-KILL failed to return errno if the system call failed
240 * optimization: slightly more comprehensive treatment of the keyword
241 arguments to MAKE-ARRAY in compiler transformations.
243 changes in sbcl-1.3.13 relative to sbcl-1.3.12:
244 * enhancement: SET triggers package locks on undefined variables.
246 * enhancement: new Windows specific option to run-program, :escape-arguments
248 * enhancement: recompiling a MAKE-INSTANCE form with an initarg :INITARG
249 CONSTANT where CONSTANT names a constant variable picks up the new value
250 of CONSTANT in case it has been redefined. (lp#1644944)
251 * optimization: faster TYPEP on undefined at compile-time types and upcoming
252 class definitions. (lp#1082967)
253 * optimization: memory consumption of each STANDARD-OBJECT instance is
254 reduced by 2 words if the compact-instance-header feature is enabled.
255 * optimization: CONDITION instances are quicker to allocate.
256 * optimization: unoptimized calls to FILL on specialized vectors are now
257 just as fast as T vectors.
258 * bug fix: get-timezone returns corret DST on 64-bit Windows. (lp#1641058)
259 * bug fix: cross reference information in fasls is no longer incompatible
260 between different cores (lp#1648186)
262 changes in sbcl-1.3.12 relative to sbcl-1.3.11:
263 * enhancement: on x86-64, compiled functions loaded from fasl files
264 can not be moved, but can be freed, by GC. Additionally, COMPILE will
265 produce immobile code if SB-C::*COMPILE-TO-MEMORY-SPACE* is set to
266 :IMMOBILE. (Caution: the flag is experimental and subject to change.)
267 The benefits are better physical separation of code from data,
268 and potentially easier examination of live images by external tools.
269 * enhancement: the docstring for SAVE-LISP-AND-DIE has been amended to
270 say that the :ROOT-STRUCTURES parameter is not meaningless on gencgc,
271 depending on the platform.
272 * bug fix: calling a named function (e.g. a DEFUN) concurrently with
273 redefining that same function could lead to execution of random bytes.
274 * bug fix: yes-or-no-p accepts formatter functions (lp#1639490)
275 * bug fix: better handling of exceptions on macOS.
277 changes in sbcl-1.3.11 relative to sbcl-1.3.10:
278 * minor incompatible change: SB-EXT:*INTEXP-MAXIMUM-EXPONENT* is removed.
279 * enhancement: TRACE ... :REPORT {TRACE,NIL} now work as advertised in the
280 documentation string (based on patch by Patrick Stein)
281 * enhancement: support unboxed signed-word structure slots on x86, x86-64
282 and ARM64. (lp#377616)
283 * optimization: faster logical bit-array operations on multidimensional
285 * optimization: better GC performance in the presence of many threads.
286 (patch by Ilya Perminov, lp#1339924)
287 * optimization: multiple-value-call is optimized with multiple argument
288 forms, not just one. (lp#753803)
289 * bug fix: MAKE-ALIEN-STRING returns the number of allocated bytes as a
290 second value as advertised (reported by Johann 'Myrkraverk' Oskarsson)
291 * bug fix: when TO-READTABLE is supplied to COPY-READTABLE, it will
292 contain only the macros in FROM-READTABLE and no others. (lp#1631506)
293 * enhancement: gencgc has been modified for x86-64 on Linux and macOS
294 to a support mark-and-sweep as well as the traditional copying strategy.
295 It is conceivable that some applications might be adversely affected.
296 Please see ':immobile-space' in 'base-target-features.lisp-expr'
297 for further details, and possible reasons to disable this feature.
298 * enhancement: x86-64 supports shrinking the fixed overhead in a structure
299 from 2 words to 1 word, reducing memory consumption in applications
300 which create many small structures.
302 changes in sbcl-1.3.10 relative to sbcl-1.3.9:
303 * enhancement: more compact low-level error signaling code
304 * enhancement: more compact encoding of cross-reference information
305 * optimization: faster out of line fixnum-float comparisons.
306 * optimization: filling a known simple-vector with a constant value
307 is about as fast in unoptimized code as in code compiled with (SPEED 3),
308 and the x86-64 implementation is able to use SSE instructions.
309 * bug fix: correctly handle the case of a non-local exit within a function
310 terminating the extent of dynamic-extent functions and variables in the
311 presence of multiple-values (lp#1563127)
312 * bug fix: restore builds on the latest OSX with the latest Xcode
315 changes in sbcl-1.3.9 relative to sbcl-1.3.8:
316 * minor incompatible change: NAMESTRING prefers to return a BASE-STRING
317 instead of (ARRAY CHARACTER (*)) when possible.
318 * enhancement: cached make-instance/allocate-instance constructors can now
319 get garbage collected.
320 * optimization: better performance for some unoptimized operations on
322 * bug fix: using the options :LOCAL-NICKNAMES and :LOCK in the same
323 DEFPACKAGE form no longer signals a bogus error
325 changes in sbcl-1.3.8 relative to sbcl-1.3.7:
326 * minor incompatible change: the system now understands that the CONDITION
327 type is disjoint with many other system types.
328 * minor incompatible change: argument types in condition report functions
329 are now declared (in combination with the above change, this can result in
330 early detection of erroneous code).
331 * enhancement: simple arrays of any rank can be stack-allocated
332 on platforms supporting stack allocation of vectors.
333 * optimization: improved type derivation for FIND, POSITION, COUNT, SEARCH,
334 MISMATCH and other array and sequence functions.
335 * optimization: ALLOCATE-INSTANCE is now as fast as MAKE-INSTANCE.
336 * optimization: more efficient CHANGE-CLASS.
337 * bug fix: versions of getresuid() and getresgid() in SB-POSIX no longer
338 cause memory faults, and should work properly (lp#1603806, reported by
340 * bug fix: handle ENOENT from getprotobyname() (lp#1596043, reported by
343 changes in sbcl-1.3.7 relative to sbcl-1.3.6:
344 * bug fix: preserve the name of the destructive function for the destroyed
345 constant and important result warnings, even when declared NOTINLINE.
346 * optimization: faster operations on list-sets.
347 * optimization: better type derivation of set functions.
349 * optimization: load-time TLS-INDEX assignment, and other
350 microoptimizations, on x86.
356 ** REMOVE, REMOVE-DUPLICATES, DELETE and DELETE-DUPLICATES on lists.
358 changes in sbcl-1.3.6 relative to sbcl-1.3.5:
359 * bug fix: do not insert conditional newlines in print-unreadable-object
360 (lp#1398290). This reverses a change made in lp#488979 which reversed
361 a fix advertised in release 0.8.14 to pass the GCL ANSI Test Suite.
362 * bug fix: constant negative rotations of 32-bit quantities are compiled
363 correctly on x86-64 and arm. (lp#1586614, reported by Guillaume Le
366 changes in sbcl-1.3.5 relative to sbcl-1.3.4:
367 * enhancement: the platform's strtod() is exposed as SB-POSIX:STRTOD
368 * enhancement: speed up debug info creation for highly nested functions.
370 * enhancement: the interleaved structure slot optimization from
371 release 1.2.6 has been ported to all architectures.
372 * enhancement: support run-program I/O redirection into lisp streams on
374 * bug fix: better wording in missed optimization note. (lp#1003265)
375 * bug fix: interpreted (CAS SVREF) was broken
376 * bug fix: support CLISP as build host for ARM (lp#1568256, thanks to Tomas
379 changes in sbcl-1.3.4 relative to sbcl-1.3.3:
380 * enhancement: who-sets and who-references work on DEFGLOBAL. (lp#1552997)
381 * enhancement: CONSTANTP understands backquote.
382 e.g. (CONSTANTP '`(0 (,CHAR-CODE-LIMIT))) => T
383 * optimization: improvements to sequence functions: CONCATENATE, SUBSTITUTE,
385 * bug fix: SB-EVAL does not signal an error for (THE KEYWORD :FOO)
386 * bug fix: a DEFTYPE name that is redefined into a DEFSTRUCT name
387 is less likely to cause confusion in the compiler.
388 * bug fix: DOCUMENTATION works as intended for classes with non-standard
390 * bug fix: (TYPEP <extended-sequence> <extended-sequence-class>) no longer
391 returns NIL in certain situations
392 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE accept class objects as
394 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE expand DEFTYPEs in
397 changes in sbcl-1.3.3 relative to sbcl-1.3.2:
398 * enhancement: warn about argument mismatch for functions passed as
399 arguments to other functions (e.g. REDUCE, MAP) at compile-time.
400 * optimization: functions accepting other functions (e.g. REDUCE, FIND) can
401 now be constant-folded if all function arguments are declared as foldable.
402 * optimization: improved logical operations on integers of unknown type.
403 * bug fix: exception handling no longer leaks memory on OS X. (lp#326238)
405 changes in sbcl-1.3.2 relative to sbcl-1.3.1:
406 * enhancement: {READ,WRITE}-SEQUENCE are much faster for some combinations
407 of short sequences and stream types
408 * enhancement: MAKE-LIST's result can be stack-allocated on x86-64
409 * bug fix: WRITE-SEQUENCE no longer fails to write lists containing integers
411 * bug fix: LOGTEST (and hence ODDP) no longer conses when given fixnum
412 arguments and small bit positions. (lp#1277690)
413 * bug fix: READ-FROM-STRING compiler-macro does not permute its arguments
414 * bug fix: DEFUN of a function name that collides with a system-generated
415 structure accessor does not confuse the runtime. (lp#540063)
416 * bug fix: heap corruption from miscompiled RESTART-BIND. (lp#1530390)
418 changes in sbcl-1.3.1 relative to sbcl-1.3.0:
419 * enhancement: SB-THREAD support for ARM64.
420 * enhancement: compiling an out-of-line DEFSTRUCT constructor call
421 will warn if a defaulted value is incompatible with its slot type.
422 * enhancement: a local INLINE declaration on a structure constructor
423 will work as intended, subject to any other factors that inhibit
424 inlining, even if the DEFSTRUCT was not itself within a global
425 INLINE proclamation for the named constructor
426 * enhancement: SB-EXT:DYNAMIC-SPACE-SIZE is now defined for cheneygc.
427 * enhancement: x86[-64] platforms support SB-EXT:CAS on structure slots
429 * enhancement: the interleaved structure slot optimization from
430 release 1.2.6 has been ported to 32-bit x86, Sparc, PowerPC, ARM64.
431 * enhancement: SB-THREAD:JOIN-THREAD signals a proper error when an attempt
432 is made to join the current thread
433 * bug fix: NTH-VALUE does not cause stack overflow. (lp#1511419)
434 * bug fix: structure constructor type checking is better. (lp#1508735)
435 * bug fix: supplied-p variables for unused optional or keyword variables no
436 longer confuse SB-DI:PARSE-COMPILED-DEBUG-FUN-LAMBDA-LIST (and thus the
437 backtrace machinery) (lp#1498644)
438 * bug fix: Backtrace correctly handles undefined-function frames on MIPS.
439 * bug fix: WITH-FLOAT-TRAPS-MASKED correctly clears accrued traps on MIPS
440 (fixes issues with floating-point type derivation in the compiler).
441 * bug fix: FLOAT-NAN-P and FLOAT-TRAPPING-NAN-P now work correctly on MIPS
443 * bug fix: MIPS context register access now masks to 32 bits (fixing issues
444 parsing negative-fixnum values for internal-error arguments and escaped
445 debug variables on 64-bit CPUs).
446 * bug fix: (SETF SAP-REF-DOUBLE) with constant offset on big-endian MIPS
448 * bug fix: Callback parameter (argument) handling on MIPS is now vastly
450 * bug fix: %DECREMENT-SEMAPHORE adjusts the remaining timeout after a
453 changes in sbcl-1.3.0 relative to sbcl-1.2.16:
454 * minor incompatible change: the environment passed to a macro/setf/deftype
455 expander is not always an object of type SB-KERNEL:LEXENV.
456 It can be nil, as is permissible by the standard.
457 * enhancement: ported to ARM64 Linux.
458 * enhancement: a new interpreter is included which has many benefits
459 over sb-eval. It is disabled by default. See src/interpreter/README
460 for instructions to enable it, and further details.
461 * bug fix: calling COMPILE when SB-EXT:*EVALUATOR-MODE* was :INTERPRET
462 would fail to perform "normal semantic processing such as macro expansion"
463 as stipulated by X3J13 issue LOAD-TIME-EVAL.
464 * bug fix: SB-UNICODE:CONFUSABLE-P no longer treats "<" and the empty
465 string as confusable. (lp#1504739)
466 * bug fix: (ASSERT (COMPUTE-IT ...)) would expand incorrectly
467 if COMPUTE-IT was a local macro that shadowed a global function.
468 * bug fix: SB-POSIX:CFSETISPEED and SB-POSIX:CFSETOSPEED now work properly
469 on platforms that use only the minimum specified set of fields in struct
470 termios (verified on Linux, still known not to work on FreeBSD and NetBSD,
471 very probably others). (partial fix for lp#1500951)
473 changes in sbcl-1.2.16 relative to sbcl-1.2.15:
474 * enhancement: by default, timers with a repeat interval do not "catch up"
475 by repeatedly calling their function after a clock discontinuity such as a
476 suspend and resume cycle
477 * bug fix: correctly restore multiple values on the stack in the presence of
478 alien calls. (lp#1489590)
479 * bug fix: MAKE-STRING-OUTPUT-STREAM enforces that :ELEMENT-TYPE
480 is a subtype of CHARACTER.
481 * bug fix: an EQL method specializer no longer causes garbage retention
482 if there are no extant methods using the specializer. (lp#492851)
484 changes in sbcl-1.2.15 relative to sbcl-1.2.14:
485 * new feature: DEPRECATION declaration for functions, variables and types
486 causes {EARLY,LATE,FINAL}-DEPRECATION-WARNING to be signaled when subject
487 of the declaration is used. Integrated with DESCRIBE, DOCUMENTATION and
488 SB-CLTL2:{VARIABLE,FUNCTION}-INFORMATION. Documented in the "Deprecation"
489 section of the manual.
490 * enhancement: ASDF updated to 3.1.5. (lp#1476867)
491 * enhancement: definitions within PROGN get proper source locations when
492 compiled (needs latest Slime to take advantage of this). (lp#1473147)
493 * enhancement: source locations for DEFCLASS slots now point directly to the
494 slot definitions, not the whole DEFCLASS form.
495 * bug fix: better source location in the presence of quoted forms.
497 * bug fix: better source locations inside backqoute. (lp#1361502)
498 * bug fix: HANDLER-BIND requires that the handler-function be
499 a function designator at the time of binding establishment. (lp#1480679)
500 * bug fix: inlined functions surrounded by nested macrolets are properly
503 changes in sbcl-1.2.14 relative to sbcl-1.2.13:
504 * minor incompatible change: The name of a compiled anonymous lambda
505 as returned by the third value of FUNCTION-LAMBDA-EXPRESSION can have
506 a lambda-list-like list following the introductory LAMBDA that is not
507 in general a syntactically valid lambda list. Specifically, it won't
508 retain default values, supplied-p variables, or &KEY or &AUX bindings.
509 * enhancement: DESTRUCTURING-BIND has been totally reimplemented from
510 scratch to address a handful of performance and correctness issues.
511 Some minor behavioral differences exist regarding order of evaluation
512 of default forms for unsupplied &OPTIONAL and &KEY arguments
513 when nested destructuring patterns are involved.
514 (lp#707556, lp#707573, lp#707578, lp#708051)
515 * enhancement: DEFCONSTANT and DEFSTRUCT respect package locks. (lp#1186238,
517 * enhancement: sb-unicode:normalize-string has a new optional argument,
518 FILTER, a callback which controls which decomposed characters are
519 collected. Useful for stripping away diacritics more efficiently.
520 * bug fix: (TYPE-OF ARRAY) for a non-simple array is subject to change
521 after a call of ADJUST-ARRAY. (lp#1333731)
522 * bug fix: Dynamic-extent allocation with a loop between allocating a value
523 and the start of its environment no longer discards the allocated data
524 when the loop is taken. (lp#1472785)
525 * bug fix: Variable-reference elimination no longer generates incorrect code
526 under certain circumstances. (lp#1446891)
527 * bug fix: variables with EQL types are no longer treated as constants by
528 VOPs, which caused problems with closures being allocated for such
529 variables, but they remained unused. (lp#1390149)
530 * bug fix: Windows installer generates registry key name
531 correctly. (lp#1476447)
533 changes in sbcl-1.2.13 relative to sbcl-1.2.12:
534 * incompatible change: on success, TRY-SEMAPHORE and WAIT-ON-SEMAPHORE
536 * enhancement: WAIT-ON-SEMAPHORE accepts a decrement parameter
537 * enhancement: JOIN-THREAD allows distinguishing timeout vs. abort in all
539 * enhancement: On Windows DBG_PRINTEXCEPTION_C is handled and its message is
540 printed. (lp#1437947)
541 * bug-fix: TRUENAME works properly on broken symlinks presented as
542 directories. (lp#1400003)
543 * bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with left-to-right
544 order of argument evaluation. (lp#1458190)
545 * bug fix: (SETF (LDB (BYTE 1 2 JUNK) X) 0) is rightly rejected.
546 * bug fix: DEFSETF lambda lists should not permit argument destructuring.
547 * bug fix: calls to (SETF SLOT-VALUE) on a missing slot would in certain
548 situations incorrectly return the result of a SLOT-MISSING method
549 instead of always returning the new value. (lp#1460381)
550 * bug fix: a DEFMACRO occurring not at toplevel and capturing parts of
551 its lexical environment (thus being a closure) caused expressions
552 involving the macro name to cause corruption in the pretty-printer
553 due to faulty introspection of the lambda list of a closure.
554 * bug fix: out of line MAP/MAP-INTO check that the results produced by the
555 function are of the matching sequence type. (lp#1459581)
556 * bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled correctly.
558 changes in sbcl-1.2.12 relative to sbcl-1.2.11:
559 * minor incompatible change: the SB-C::*POLICY* variable is no longer
560 a list. Code which manipulated it as such (including but not limited
561 to non-bundled releases of ASDF) will need to be revised.
562 * enhancement: The input stream for COMPILE-FILE implements
564 * enhancement: EVAL errors that occur by way of LOAD report the starting
565 line and column number of the erring toplevel form. (lp#565247)
566 * optimization: better MAP and MAP-INTO on known vector result types.
567 * bug fix: Read/modify/write macros accessing a place which is a
568 composition of CAR+CDR operations, such as (SHIFTF (CADR X) (ELT V 0)),
569 do not access subforms more than once. (lp#1450968)
570 * bug fix: short form of DEFSETF no longer allows trailing junk.
571 * bug fix: DEFINE-MODIFY-MACRO respects the provisions of CLHS 5.1.3
572 regarding argument evaluation order. (lp#1452539)
573 * bug fix: POP works as specified in CLHS if the setter for its
574 argument has a side-effect on the existing CAR value. (lp#1454021)
575 * bug fix: Reading "#()" with a positive numeric argument signals a
576 reader error. As specified, reading "#1()" has undefined consequences,
577 so correct portable code should be indifferent to this. (lp#1252100)
578 * bug fix: Malformed reader conditionals such as "(#-no-such-feature)"
579 and "(#+sbcl)" no longer parse as NIL. (lp#1454400)
581 changes in sbcl-1.2.11 relative to sbcl-1.2.10:
582 * enhancement: SET-PPRINT-DISPATCH will warn when given an expression in
583 which any part is unrecognizable as a legal type-specifier.
584 The dispatch table will be altered, but the new entry is disabled.
585 Subsequent type-defining forms will cause pprint-dispatch tables to
586 re-examine whether any disabled entries should be enabled. (lp#1429520)
587 * enhancement: Loading code containing calls to a deprecated function will,
588 under most circumstances, signal warnings similar to compiling such code.
589 The usual caveat holds about not detecting calls through a computed name,
590 as in (funcall (intern "DEPRECATED-FUN" "SB-EXT")).
591 * enhancement: (SB-EXT:COMPILE-FILE-LINE) is a new macro that expands
592 to a constant (VALUES integer integer) indicating the source line/column
593 from which it was read, intended for logging Lisp runtime errors in
594 a style similar to that afforded by the C preprocessor __LINE__ macro.
595 Similarly (SB-EXT:COMPILE-FILE-POSITION) returns a position in characters.
596 * enhancement: improved source locations for VOPs, alien types and
598 * bug fix: functions in :FINAL deprecation have the correct docstring.
599 No visible change, as no such functions presently exist. (lp#1439151)
600 * bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an error
601 if OTHER names either a macro or special-operator. (lp#1439921)
603 changes in sbcl-1.2.10 relative to sbcl-1.2.9:
604 * minor incompatible change: all SOCKINT::WIN32-* functions have been
605 deprecated with EARLY deprecation state
606 * minor incompatible change: performing introspection via the system-internal
607 SB-INT:INFO function could expose that :TYPE :TRANSLATOR is not necessarily
608 a function, as it always was before. (Affects swank-fancy-inspector)
609 * enhancement: The value of SXHASH on bit-vectors of length equal to the
610 word size now depends on the vector's contents instead of being constant;
611 its value on bit-vectors of length divisible by the word size now depends
612 also on the contents of the vector's last word.
613 * bug-fix: sb-bsd-sockets on win32 uses proper C function declarations.
615 * bug fix: A new dead code elimination phase removes dead code loops
616 that confuse stack analysis. (lp#1255782, lp#308914)
617 * bug fix: A toplevel form which was simple enough to bypass the main
618 compiler in COMPILE-FILE, and which contained an empty SETQ or PROGN
619 would produce an invalid fasl file. (lp#1427050)
620 * bug fix: The compiler no longer signals an internal error when
621 encountering invalid FUNCTION forms like (function 1)
622 * bug fix: express proper dependencies in the ASDF contrib, to support
623 systems where make runs in parallel. (lp#1434768; thanks to Nikhil
626 changes in sbcl-1.2.9 relative to sbcl-1.2.8:
627 * minor incompatible change and bug fix: unboxed numeric constants
628 on x86oids are arranged in memory differently, and the disassembler
629 does not show them separately in DISASSEMBLE, but does
630 if DISASSEMBLE-CODE-COMPONENT is used. (lp#1421987)
631 * optimization: The compiler's treatment of type specifiers makes
632 it slightly faster and more memory-efficient. Portable code
633 should be indifferent to this change, however, users of
634 SB-INTROSPECT:FUNCTION-TYPE might notice that (MEMBER T NIL)
635 and (MEMBER NIL T) are both internally collapsed to the former,
636 so that the latter can never be obtained as part of an FTYPE.
637 * optimization: a TYPEP call in which the second argument is not a
638 QUOTE form but nevertheless recognized as a compile-time constant
639 might open-code the test. One scenario for this involves backquote,
640 such as (TYPEP x `(my-type ,some-arg)). Code which relied upon
641 deferring until runtime should declare (NOTINLINE TYPEP).
642 [Due to the sematic constraints of DEFTYPE etc in in CLHS 3.2.2.3,
643 code requiring delayed evaluation could be unportable though.]
644 * enhancement: unused variables at the top-level are now reported.
646 * bug fix: DEFCLASS handles cyclic {super,meta}class relations better
648 * bug fix: compiler no longer signals an error when compiling certain
649 function calls. (lp#1416704, lp#404441, lp#1417822, lp#1234919)
650 * bug fix: compiler doesn't stumble on a LOGIOR transform. (lp#1389433)
651 * bug fix: more robust debugger and backtraces. (lp#1413850, lp#1099500,
652 lp#1412881, lp#945261, lp#1419205, lp#1409402)
653 * bug fix: files larger than 4GB can now be compiled.
654 * bug fix: x86 truncated results from 64-bit foreign functions to 32 bits.
655 * bug fix: file-position didn't work on large files on win32. (lp#1271545)
656 * bug fix: callbacks from foreign threads can work without enabling
658 * bug fix: sb-introspect:function-lambda-list works properly on interpeted
660 * bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (lp#886418)
661 * bug fix: compiler no longer fails to dump a multidimensional array
662 constant involving a circular reference to itself
663 * bug fix: conditional and nested DX allocation no longer confuse the
664 compiler in STACK analysis. (lp#1044465)
665 * bug fix: sb-rotate-byte constant folding bug fixed. (lp#1423682)
667 changes in sbcl-1.2.8 relative to sbcl-1.2.7:
668 * enhancement: better error and warning messages. (lp#1314767, lp#736383)
669 * enhancement: backtrace for invalid argument count produces the exact
670 supplied arguments including the extra ones, on x86, x86-64 and ARM.
671 * enhancement: a STYLE-WARNING is signaled for DEFSTRUCT accessors which
672 are used before the structure is defined; similarly for the predicate.
673 * optimization: FORMAT NIL with only ~a and string arguments is transformed
675 * optimization: POSITION and FIND when inlined into code that is compiled
676 with qualities of safety < 2 and speed > space will no longer signal
677 an error on circular lists, but will potentially loop forever if given
678 no :END constraint. As was always the case, calls that are not inlined
679 are safe regardless of lexical policy.
680 * bug fix: CLOS methods compiled with (OPTIMIZE (DEBUG 0))
681 no longer cause debugger failure when printing a backtrace
682 * bug fix: more resilience to deleted code. (lp#1308328, lp#1390544)
683 * bug fix: the CLHS example of MAKE-LOAD-FORM involving TREE-WITH-PARENT
684 did not work, and now it does.
686 changes in sbcl-1.2.7 relative to sbcl-1.2.6:
687 * optimization: returning constant values refers to preboxed constants
688 more reliably. (lp#1398785)
689 * enhancement: a STYLE-WARNING is produced if a compiler-macro is defined
690 for a function after at least one ordinary (not inlined) call to that
691 function was compiled, indicating a likely compilation order problem.
692 Likewise a warning ensues if a call is compiled to a function
693 that is subsequently proclaimed INLINE.
694 * enhancement: always lose() when something goes wrong while saving a core
695 (instead of just printing an error on stderr in some situations).
696 * enhancement: frames in the debugger are now restartable by default.
697 * bug fix: restore error handling on Windows x86.
698 * bug fix: MAKE-SEQUENCE detects type errors in its :INITIAL-ELEMENT
699 at compile-time when possible. (lp#330299)
700 * bug fix: parsing of malformed type specifiers no longer results
701 in a memory-fault-error.
702 * bug fix: LOOP properly destructures nested lists in WITH.
703 * bug fix: MACROEXPANDing the redefinition of an alien structure type no
704 longer signals the wrong error.
705 * bug fix: PROGV doesn't get confused by forced DEBUG 3 (lp#1405456).
707 changes in sbcl-1.2.6 relative to sbcl-1.2.5:
708 * enhancement: SERVE-EVENTS uses the poll() system call in lieu of
709 select() if the OS has the former. Previously poll() was used
710 only if waiting on exactly one file descriptor.
711 * enhancement: efficiency of access to untagged structure slots is improved
712 on x86-64, and the order of slots in memory is exactly as specified by
713 defstruct, simplifying use of structures as arguments to foreign calls.
714 * bug fix: SB-DEBUG:ARG now works in all TRACE options which evaluate forms.
716 * bug fix: GC memory corruption during internal memory handling.
717 * bug fix: duplicate effective-slot-definition objects as compared
718 by EQ on name could be present in CLASS-SLOTS of a class whose
719 metaclass was structure-class or condition-class. (lp#1049423)
720 * bug fix: HANDLER-BIND with empty bindings works again; regression in
722 * bug fix: ATOMIC-INCF works on structure slots in interpreted code.
724 * bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and
725 (member #\a #\c). (lp#1392068)
726 * bug fix: READ sometimes accidentally preserved a whitespace character
727 after a token when it should not have. (lp#327790)
729 changes in sbcl-1.2.5 relative to sbcl-1.2.4:
730 * enhancement: sb-bsd-sockets now has basic support for IPv6
731 * enhancement: An sb-unicode package has been added, containing
732 many functions related to handling Unicode text
733 * enhancement: The reader now normalizes symbols to Normalization
734 Form KC (NFKC). This behavior can be disabled with
735 SB-EXT:READTABLE-NORMALIZATION
736 * enhancement: a style-warning is signaled if OPTIMIZE declarations
737 multiply specify a quality with differing values. (lp#310267)
738 * bug fix: conservatively pointed to pages wipe out unused dwords so
739 that they cannot act as false roots in turn.
740 * bug fix: the walker's handling of lexical variable and symbol-macro
741 bindings is improved (lp#375326, lp#1368305)
742 * bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a clause
743 contains an undefined condition type; regression in 1.1.19 (lp#1378939)
744 * bug fix: in interpreted code, inequality predicates did not type-check
745 arguments that weren't examined, and a 1-argument use of MIN or MAX
746 accepted a complex number. (lp#1373702)
747 * bug fix: APROPOS and APROPOS-LIST handle inherited symbols correctly.
748 (lp#1364413, thanks to Zach Beane)
750 changes in sbcl-1.2.4 relative to sbcl-1.2.3:
751 * enhancement: the sequence functions MAP, CONCATENATE and MERGE now call
752 the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and
753 SEQUENCE:MERGE respectively when the specified result type designates an
755 * bug fix: Wrong binding order of supplied-p parameters in macro lambda
757 * bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
758 universal superclass (lp#1332983)
759 * bug fix: reading an uninterned symbol whose print name has the
760 syntax of an integer signals an error. (lp#310062)
761 * bug fix: the walker is less likely to be confused when walking LET* forms
762 with special bindings and use of those bindings and others of the same
764 * bug fix: a rare bug affecting 32-bit platforms resulting in a
765 fatal condition with the message "Globaldb rehash failure" has been fixed.
767 changes in sbcl-1.2.3 relative to sbcl-1.2.2:
768 * enhancement: DOCUMENTATION works on instances of
769 FUNCALLABLE-STANDARD-CLASS
770 * enhancement: ASSERT reports arguments of calls to lexical functions in
771 additional to global functions.
772 * enhancement: ASDF updated to 3.1.3
773 * enhancement: UIOP can be loaded without ASDF.
774 * bug fix: some methods on CHANGE-CLASS did not finalize the new class
775 before accessing its class-precedence list.
776 * bug fix: CHANGE-CLASS no longer fails on unbound slots in the source
778 * bug fix: CHANGE-CLASS signals an appropriate error when the destination
779 class is a FORWARD-REFERENCED-CLASS.
780 * bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for slots for
781 which initargs have been supplied.
782 * bug fix: saving cores on ARM was broken since the introduction of GENCGC.
784 * bug fix: macroexpanding a backquoted expression involving ",."
785 outside of the compiler failed. (lp#1354623)
787 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
788 * incompatible change: the #\` ("backquote") reader macro was reimplemented
789 to support robust pretty-printing. Reading a form involving #\` produces
790 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
791 that are not lists. Code that unportably attempts operations on
792 un-evaluated forms resulting therefrom, e.g.
793 (SUBST a b (read-from-string "`(x (,y))"))
794 might generate incorrect results and/or errors.
795 * enhancement: support for GNU/kFreeBSD x86.
796 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
797 and DEFGLOBAL variables of type fixnum.
798 * enhancement: arithmetic constant reduction is now performed on defconstant
799 constants too. (lp#1337069).
800 * bug fix: certain ftype proclamations containing &optional t &rest t no
801 longer cause subsequent definitions to signal bogus style-warnings.
802 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
803 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
806 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
807 * enhancement: GENCGC is enabled on ARM.
808 * enhancement: better error reporting for invalid calls to local functions.
809 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
811 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
813 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
815 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
817 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
818 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
819 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
821 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
822 lp#700538, lp#613876, lp#695286, lp#798388)
823 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
824 * bug fix: array type intersection handles T and unknown element types
825 correctly. (lp#1258716)
826 * bug fix: fix a corner case in array type unparsing that would result in
827 misleading translations from our internal type representation.
828 * bug fix: array-rank now sees through union and intersection types.
830 * bug fix: when DECLARE expressions are in the wrong place, be careful not
831 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
833 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
834 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
835 instead of signaling an error. (lp#1095483)
836 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
837 used to (rarely) introduce duplicate conflict markers in a single
838 TN/block pair. (lp#1327008)
840 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
841 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
842 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
843 report of the signaled conditions lists currently running threads.
844 * enhancement: ported to ARM linux.
845 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
846 * enhancement: new contrib sb-mpfr by Stephan Frank.
847 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
848 (lp#1315846, thanks to Mark Cox)
849 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
850 function-designator to a function only as needed. (lp#1012335)
851 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
852 thanks to Thomas Hlavaty)
853 * bug fix: handle --without-xxx options to make.sh more carefully.
854 (lp#1246665, thanks to Richard M Kreuter)
855 * bug fix: prevent maybe-delete-exit from doing semantically broken things
856 with local exits. (lp#309099, lp#518099, lp#533930)
857 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
860 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
861 * optimization: COERCE is now more effecient for more cases when the type is
862 known at compile-time.
864 * bug fix: correctly inherit condition initforms. (lp#1300904)
865 * bug fix: properly pprint literal functions inside nested lists.
867 * bug fix: more-correctly handle array-type unity (broken for ages, causing
868 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
869 reported by jasom in #lisp).
871 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
872 * enhancement: printing backtraces respects
873 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
875 * optimization: defstruct out-of-line accessor are now as fast as inlined.
877 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
878 instances with a test-function (reported by Vivitron in #sbcl)
879 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
880 * bug fix: Change COND error message (lp#1254511)
881 * bug fix: LOAD is no longer confused when called on a directory.
883 * bug fix: MAKE-CONDITION reports names of missing condition classes
884 properly (lp#1199223)
885 * bug fix: restore building with clang. (lp#1293643)
886 * bug fix: restore building on SPARC (broken since 1.1.15).
887 * bug fix: improved FreeBSD support.
888 * bug fix: PPC floating point conversion corrupted stack.
890 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
891 * minor incompatible change: improve read/print consistency for pathnames on
892 Win32, by using the circumflex character #\^ as the escape character.
894 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
895 * enhancement: Loading fasls with symbols from an undefined package includes
896 the name of the symbol in the error message.
897 * bug fix: problems when redefining classes and doing TYPEP on classes
898 concurrently. (lp#1272742)
899 * bug fixes to the x86-64 XCHG instruction:
900 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
902 ** it was misencoded when used to exchange EAX with itself.
903 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
904 32- and 16-bit variations as NOP.
905 * bug fix: the disassembler outputs source annotations in the right place
906 and no longer randomly drops some of them. (lp#1249205)
907 * bug fix: fix commutative-arg-swap from introducing undumpable structures
908 into code, prevent code with errors from being compiled. (lp#1276282)
909 * bug fix: pathnames with :back in their directory component are succeffully
911 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
912 wrap functions around. (lp#309086)
914 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
915 * new feature: the iterative spilling/coloring register allocator developed
916 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
917 in. By default, it only activates for functions that optimize with
918 (speed 3) and (> speed compilation-speed), but setting
919 sb-regalloc:*register-allocation-method* to :iterative forces its
920 execution. The previous behaviour can be obtained by instead setting that
921 variable to :greedy. Thanks again to Google for their support, and, more
922 crucially, to Alexandra Barchunova for her hard work.
923 * optimization: make-array with known element-type and unknown dimensions is
925 * optimization: make-array with unknown element-type is faster as well.
927 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
928 :application-type argument, which can be :console or :gui. :gui allows
929 having GUI applications without an automatically appearing console window.
930 * enhancement: reduced conservativism on GENCGC platforms:
931 conservative roots must be valid-looking tagged pointers or point
932 within a code object, not merely point to within the allocated part
933 of a page, in order to pin a page.
934 * enhancement: support for "Mac Roman" external format.
935 * enhancement: encapsulation of named generic functions now happens without
936 altering the identity of the function bound to the name.
937 * bug fix: Windows applications without the console window no longer misbehave.
938 (patch by Wilfredo Velazquez, lp#1256034).
939 * bug fix: modular arithmetic optimizations do not stumble on dead branches
940 with bad constants. (reported by Douglas Katzman)
941 * bug fix: CLISP can be used again as a cross-compilation host.
942 (Thanks to Vasily Postnicov, lp#1261451)
943 * bug fix: run-program crashed with :directory nil. (lp#1265077)
945 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
946 * optimization: complicated TYPEP tests are less opaque to the type
947 propagation pass. (lp#1229340)
948 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
949 * optimization: EQUALP on structures with raw slots (double-float/complex)
950 no longer conses and is faster.
951 * optimization: RESTART-CASE expands to more compact code.
952 Thanks to Jan Moringen. (lp#1249055)
953 * enhancement: Top-level defmethod without defgeneric no longer causes
954 undefined-function warnings in subsequent forms. (lp#503095)
955 * enhancement: Better error messages for system errors on Windows.
956 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
957 Cushing. (lp#1249183)
958 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
959 specification (multiple integer arguments) and signals a continuable error
960 if the current SBCL version is lower (older) than the specification.
962 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
963 * bug fix: EQUALP now compares correctly structures with raw slots larger
965 * bug fix: contribs couldn't be built on Windows with MinGW.
966 * bug fix: Better pathname handling on Windows. (lp#922117)
967 * bug fix: OPEN reports a more meaningful error when an existing file is
968 opened for output with :if-exists :new-version. Thanks to Philip
969 Munksgaard. (lp#455381)
970 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
971 CLOS-related errors. (lp#633911)
972 * bug fix: GC deadlocks caused by concurrent consing on Windows.
974 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
975 * optimization: better distribution of SXHASH over small conses of related
977 * other improvements to SXHASH:
978 ** use the whole of the positive-fixnum range for SXHASH of fixnums
979 * enhancement: The error message when calling an undefined alien function
980 includes the name of the function on x86-64.
981 * enhancement: sb-ext:run-program now supports :environment on Windows.
982 * enhancement: ASDF is no longer required to load contribs at runtime.
984 * enhancement: when called with a symbol, FIND-RESTART no longer calls
985 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
986 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
987 clusters better in some cases
988 * enhancement: SOME/ANY/other quantification higher-order functions no
989 longer cons. (lp#1070635)
990 * bug fix: forward references to classes in fasls can now be loaded.
992 * bug fix: don't warn on a interpreted->compiled function redefinition
993 from the same location. (patch by Douglas Katzman, lp#1042405)
994 * bug fix: Create vectors of proper internal length when reading literal
995 vectors from FASLs. (Reported by Jan Moringen)
996 * bug fix: COMPILE can now successfully compile setf functions.
997 (Reported by Douglas Katzman)
998 * bug fix: run-program performs more correct escaping of arguments on
999 Windows. (lp#1239242)
1000 * bug fix: function-lambda-expression on generic functions returns the
1002 * bug fix: (the [type] [constant]) now warns when [constant] matches
1003 [type] except for the number of values. (Reported by Nathan Trapuzzano
1005 * bug fix: signal errors in required cases of slot-definition initialization
1006 protocol. (lp#309072)
1007 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
1008 (thanks to Stelian Ionescu, lp#1242643)
1009 * bug fix: when given a restart object, FIND-RESTART checks whether the
1010 restart is active and, when a condition is supplied, whether the restart
1011 is associated to a different condition (lp#774410)
1013 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
1014 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
1015 shutdown(3). (thanks to Jan Moringen, lp#1207483)
1016 * enhancement: document extensible sequences. (thanks to Jan Moringen,
1018 * optimization: EQUAL and EQUALP transforms are smarter.
1019 (thanks to Elias Martenson, lp#1220084)
1020 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
1021 * bug fix: probe-file now can access symlinks to pipes and sockets in
1022 /proc/pid/fd on Linux. (reported by Eric Schulte)
1023 * bug fix: SBCL can now be built on Solaris x86-64.
1024 * bug fix: Floating point exceptions do not persist on Solaris anymore.
1025 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
1026 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
1028 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
1029 (thanks to Stephan Frank)
1030 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
1031 (thanks to Stephan Frank, lp#1206191)
1032 * bug fix: sb-safepoint can now reliably handle signal interruptions of
1033 foreign code. (lp#1133018)
1034 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
1035 constructors no longer fails to merge actual and default initargs
1036 (thanks to Jan Moringen, lp#1179858)
1037 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
1038 constructors handles non-KEYWORD initialization arguments more correctly.
1039 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
1040 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
1041 * bug fix: class definitions with CPLs inconsistent with their metaclasses
1042 are less likely to destroy the object system's integrity. (lp#309076)
1043 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
1044 standard. (lp#1203585, thanks to Jan Moringen)
1045 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
1046 settings. (lp#1023721)
1047 * bug fix: getting the order of arguments to
1048 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
1049 rather than a failed AVER. (reported by Paul Nathan)
1050 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
1051 arguments during copying on x86 and x86-64; it may still happen on other
1052 platforms when there are more fixed arguments than stack slots.
1053 (reported by Jan Moringen)
1055 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
1056 * enhancement: support building the manual under texinfo version 5.
1058 * enhancement: Windows builds no longer display the "Kitten of Death" message.
1059 A warning is instead appended to the regular banner, and may be muted with
1060 --noinform. (lp#728247)
1061 * enhancement: support building under new linker handling of syscalls under
1062 NetBSD. (thanks to Robert Swindells)
1063 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
1064 (regression since 1.1.9)
1065 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
1066 compiler macro. (thanks to Douglas Katzman).
1067 * bug fix: signal a warning when defining a setf-function when a
1068 setf-expander is already present. (thanks to Douglas Katzman).
1069 * bug fix: improved threading on PPC.
1070 * bug fix: ROOM works again on Windows. (lp#1206456)
1071 * bug fix: Streams were flushed even when there was one byte still left in
1072 the buffer. (lp#910213)
1073 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
1074 either NIL or :ERROR. (reported by Jan Moringen)
1076 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
1077 * enhancement: ASDF has been updated to 3.0.2.
1078 * optimization: stack frames are packed more efficiently on x86oids, which
1079 ought to reduce the frequency of Methuselahn conservative references (it
1080 certainly helps with gc.impure.lisp / BUG-936304 on x86).
1081 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
1082 recognized in modular arithmetic contexts, and compile to native negate,
1083 rather than going through bignums only to keep the low bits.
1084 * bug fix: Compiling potential modularic arithmetic forms does not cause type
1085 errors when some integer types lack lower or upper bounds. (lp#1199127)
1086 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
1087 bitwidth before being used in a non-modular context. (lp#1199428)
1088 * bug fix: Multiple catch/unwind blocks in a single function are now
1089 allocated in the right stack order on win32. (lp#1072739)
1091 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
1092 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
1093 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
1094 * enhancement: disassemble now annotates some previously missing static
1095 functions, like LENGTH.
1096 * enhancement: clean.sh now also cleans doc/internals.
1097 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
1098 print a symbol with a package prefix.
1099 * enhancement: The debugger and backtracing are more robust against buggy
1100 PRINT-OBJECT methods.
1101 * optimization: calls to static functions on x86-64 use less instructions.
1102 * optimization: compute encode-universal-time at compile time when possible.
1103 * optimization: when referencing internal functions as #'x, don't go through
1104 an indirect fdefn structure.
1105 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
1106 * optimization: (mod fixnum) type-checks are performed using one unsigned
1107 comparison, instead of two.
1108 * optimization: enable more modular arithmetic transforms in the presence of
1110 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
1111 when the result is known to be negative.
1112 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
1113 * optimization: comparisons between rationals and constant floats or between
1114 integers and constant ratios are now converted to rationals/integers at
1116 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
1117 * bug fix: problems with NCONC type derivation (reported by Jerry James).
1118 * bug fix: EXPT type derivation no longer constructs bogus floating-point
1119 types. (reported by Vsevolod Dyomkin)
1120 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
1121 addrinfo. (lp#1187041, patch by Jerry James)
1122 * bug fix: uninitialized type-error conditions can now be printed.
1124 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
1125 listening, allowing several tests to run in parallel.
1126 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
1127 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
1129 * bug fix: Specialised SIMD-PACK types can be negated.
1130 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
1131 reported by Eric Marsden)
1132 * bug fix: FP return values from foreign calls are always rounded to single
1133 or double float precision on x87.
1134 * bug fix: Known-safe vector access on x86oids should not fail spuriously
1135 when the index is of the form (+ x constant-positive-integer).
1136 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
1137 * bug fix: backtrace printer no longer tries to create very large lists when
1138 the arg-count register is clobberred by other code. (lp#1192929)
1139 * bug fix: x86 should never signal an FP exception while boxing an FP value,
1140 a situation that lands us into ldb.
1142 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
1143 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
1144 ROOM, plus a few SB-INTROSPECT functions) has been completely
1145 rewritten; it may now exhibit different bugs than before.
1146 * new feature: minimal runtime/compiler intrastructure support for SSE
1147 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
1148 feature :sb-simd-pack. This should enable intrinsics extensions as
1149 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
1150 for maintaining a branch for so long.
1151 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
1152 the working directory of the spawned process.
1153 (lp#791800) (patch by Matthias Benkard)
1154 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
1155 stack-allocated on PPC.
1156 * enhancement: "fixed objects" can now be stack-allocated on PPC.
1157 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
1158 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
1159 also returns VOPs which do not translate any functions, and finds
1160 defoptimizer types ir2convert and stack-allocate-result.
1161 * enhancement: better type derivation for APPEND, NCONC, LIST.
1163 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
1164 heap in a manner similar to the GC rather than its previous ad-hoc
1165 scheme, and is therefore no less and possibly more accurate.
1166 * fixes and enhancements related to Unicode:
1167 ** the character database information has been updated to Unicode 6.2;
1168 ** support for canonical and compatibility decomposition of characters has
1169 been added, along with support for primary composition;
1170 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
1171 NFKD) has been included;
1172 ** querying the character database for code points not defined by Unicode
1173 gives less wrong answers (lp#1178038, reported by Ken Harris)
1174 * enhancement: print intermediate evaluation results for some ASSERTed
1175 expressions. (lp#789497) (patch by Alexandra Barchunova)
1176 * enhancement: x86-64 disassemblies are annotated with unboxed constant
1177 values when there are references to (RIP-relative) unboxed constants.
1178 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
1179 of quadratically with the size of the input in the worst case.
1181 * bug fix: handle errors when initializing *default-pathname-defaults*,
1182 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
1183 decoding errors, or directories being deleted.
1184 * bug fix: Loading a core with a discontiguous dynamic space now correctly
1185 computes the amount of dynamic space used.
1186 * bug fix: disassembler missing ",8" on SHLD
1187 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
1188 that provide an "invalid" stack frame link for the signal handler
1189 itself now use the saved-fp-and-pc mechanism to pick up from the stack
1190 frame in the interrupt (signal) context. This is known to affect
1191 threaded FreeBSD/x86-64.
1192 * bug fix: some LOOP statements couldn't be compiled.
1194 * bug fix: sb-sequence:dosequence works on literal vectors.
1195 * bug fix: errors in generic arithmetic show the assembly routine's
1196 caller on x86 and x86-64. (lp#800343)
1197 * bug fix: Compile-time type errors should never result in COMPILE-FILE
1198 failure. (lp#943953)
1199 * bug fix: Known bad local calls do not cause strange failures when
1200 emitting or dumping code. (lp#504121)
1201 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
1202 codegen errors: type checks are inserted as necessary. (lp#1177703)
1203 * bug fix: Unsigned modular arithmetic is correctly converted into signed
1204 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
1205 * bug fix: a combination of inlined local function with &optional and
1206 recursion no longer causes undescriptive compiler errors. (lp#1180992)
1207 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
1208 when testing for non-zero-ness.
1209 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
1211 * bug fix: Type mismatch for the value of conditional expressions are
1212 correctly reported when detected at compile-time, instead of complaining
1213 about a constant NIL (similar for non-EQ-comparable catch tags).
1214 * bug fix: Referring to INLINE global functions as values should not result
1215 in a compilation failure. (lp#1035721)
1216 * optimization: faster ISQRT on fixnums and small bignums
1217 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
1218 * optimization: On x86-64, the number of multi-byte NOP instructions used
1219 for code alignment is now always minimal.
1220 * optimization: On 64-bit targets, the compiler generates much faster
1221 code for type checks for types known at compile time that are smaller
1222 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
1223 their COMPLEX variants.
1224 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
1225 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
1226 * optimization: ROOM no longer conses so egregiously on non-x86oid
1228 * optimization: associative bitwise operations reassociate patterns like
1229 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
1231 * optimization: quasiquote expressions now perform more constant folding,
1232 instead of consing equal lists at runtime. (lp#1026439)
1233 * optimization: local call analysis of inlined higher-order function
1234 should converge more quickly, resulting in better code for complex
1236 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
1237 integer constants are handled more cleverly, especially when they
1238 can be represented as sign-extended (signed-byte 32). (Based on a
1239 patch by Douglas Katzman)
1240 * optimization: IF/IF conversion should reliably result in sane code
1241 when (some of) the results of the inner IF are always false or
1243 * optimization: On x86oids, variable right shifts of machine words are
1244 compiled into straight SAR/SHR, instead of going through the generic
1247 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
1248 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
1250 * bug fix: :allocation slot option works for condition slots
1252 * bug fix: redefining conditions does not lead to multiple evaluations of
1253 hairy slot initfunctions anymore (lp#1164969)
1254 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
1256 * bug fix: function constants now work as initforms and default initarg
1257 values of conditions (lp#539517)
1258 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
1259 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
1260 * bug fix: no more bogus ## references when pretty printing backquoted
1261 forms with non-trivial structure sharing. (lp#1161218)
1262 * bug fix: Don't signal an error on (setf (documentation nil 'function)
1263 "doc"). Signal a style-warning instead when trying to set documentation
1264 of NIL for all other documentation types. (Reported by Zach
1265 Beane; regression since 2e52fa05.)
1266 * bug fix: modular arithmetic involving large constants and conditionals
1267 should no longer result in spurious dead code elimination. (Reported by
1269 * bug fix: our mach exception handler can seemingly called very early in
1270 the program execution process on OS X 10.8.0. Try and handle that case
1271 robustly, without potentially leaking mach ports too much.
1272 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
1274 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
1275 * enhancement: the continuable error when defknown-ing over extant
1276 fndb entries can be ignored by passing :overwrite-fndb-silently t
1277 as a keyword argument to sb-c:defknown (after attributes). Useful
1278 to allow defknown to be re-loaded. Use with :allow-other-keys t
1279 for backward compatibility.
1280 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
1282 * bug fix: Prevent a make-array transform from modifying source forms
1283 causing problems for inlined code. Thanks to Bart Botta.
1284 (regression since 1.0.42.11-bis)
1285 * bug fix: clear-output calls the correct gray stream routine,
1286 sb-gray:stream-clear-output. (lp#1153257)
1287 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
1289 * bug fix: Better error messages for package operations (lp#1154776)
1290 * bug fix: delete-package on a nonexistent package should signal a cerror.
1291 (regression since 1.0.37.44).
1292 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
1293 (lp#1154946, lp#1072112)
1294 * bug fix: compiling make-array no longer signals an error when the
1295 element-type is an uknown type, a warning is issued instead.
1296 Thanks to James Kalenius (lp#1156095)
1297 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
1298 produces wrong results for some inputs. (Thanks to Jan Moringen.)
1301 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
1302 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
1304 * new feature: package local nicknames. See manual for details.
1305 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
1306 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
1307 * enhancement: easier to use restarts for resolving name-conflicts
1308 resulting from IMPORT, EXPORT, or USE-PACKAGE.
1309 * enhancement: variant DEFPACKAGE forms now signal a full error with
1310 restarts provided for resolving the situation. (lp#891351)
1311 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
1312 DEFPACKAGE forms can now signal a full error with restarts provided for
1313 resolving the situation. See manual for details. (lp#891351)
1314 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
1315 (Thanks to Anton Kovalenko.) (lp#1102748)
1316 * enhancement: backtrace improvements
1317 ** secondary CLOS dispatch functions have better debug names (lp#503081)
1318 ** easier to read method names in backtraces. See
1319 SB-DEBUG:*METHOD-FRAME-STYLE*.
1320 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
1321 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
1322 SB-DEBUG:BACKTRACE-AS-LIST.
1323 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
1324 information is available in less intrusive form as frame annotations.
1325 * enhancement: SB-POSIX now provides MAP-ANON.
1326 * enhancement: test-suite results are colorized, failures in red, unexpected
1327 success in green. Works on Windows and on terminals with ANSI escape code
1328 support. Can be disabled with --no-color.
1329 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
1330 (thanks to James M. Lawrence)
1331 * bug fix: no more unused variable style warnings from RESTART-CASE
1332 macroexpansion (lp#1113859)
1333 * bug fix: no more unused variable style warnings when loading
1334 sb-bsd-sockets.asd (lp#1114681)
1335 * bug fix: deleting a package removes it from implementation-package
1336 lists of other packages.
1337 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
1338 This does not fix the occasional "interrupt already pending" issue, though.
1339 * bug fix: (setf (documentation 'x 'function)) and
1340 (setf (documentation #'x t)) set documentation in different places.
1341 (regression since 1.0.43.63)
1342 * bug fix: build on newer glibc. (lp#1095036)
1344 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
1345 * optimization: LOOP expressions using "of-type character" have slightly
1346 more efficient expansions.
1347 * bug fix: very long (or infinite) constant lists in DOLIST do not result
1348 in very long compile times or heap exhaustion anymore. (lp#1095488)
1349 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
1350 * bug fix: adjust-array ignored :initial-element for simple-vectors.
1352 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
1353 longer cause infinite loops (on circular data) or violate eqlity
1354 constraints. (lp#1099708)
1355 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
1357 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
1358 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
1360 * enhancement: support for C-c to interrupt the foreground thread
1361 on Windows. (Thanks to Anton Kovalenko.)
1362 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
1363 * enhancement: Safepoint builds on POSIX platforms can now optionally be
1364 built without pseudo-atomic sequences and their run-time overhead.
1365 * enhancement: Threads created outside of Lisp can enter Lisp through
1366 alien callbacks and appear as Lisp threads for the duration of that
1367 function invocation. On safepoint builds only.
1368 * enhancement: Miscellaneous improvements to namestrings and underlying
1369 calls to OS functions for file system access on Windows. (Thanks to
1371 * enhancement: The MSI installer support for Windows now uses Windows
1372 Installer XML at least version 3.5 and includes various usability
1373 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
1374 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
1375 on Windows. (Thanks to Anton Kovalenko.)
1376 * enhancement: The Windows backend now supports the x86-64 platform.
1377 (Thanks to Anton Kovalenko.)
1378 * bug fix: fasls are now once again directly executable (on platforms
1379 supporting shebang lines, with a suitably-installed sbcl).
1380 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
1381 * bug fix: Fix CAS access to slots of direct instances of structure classes
1382 in the presence of subclasses sharing the same conc-name.
1383 * bug fix: Logical pathname namestrings on Windows have been changed to
1384 be lower-case, to minimize differences between POSIX and Windows.
1386 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
1387 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
1388 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
1389 (NT 5.0) is no longer being maintained.
1390 * notice: Starting with this version, SBCL on Windows no longer supports
1391 building with disabled thread support.
1392 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
1393 * enhancement: New feature sb-dynamic-core allows the runtime to be
1394 rebuilt or relocated without requiring changes to the core file on
1395 all linkage table platforms. Required on Windows. (Thanks to Anton
1397 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
1398 * enhancement: I/O on Windows unnamed pipes is interruptible
1399 asynchronously using interrupt-thread, timers when running on Windows NT
1400 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
1402 * enhancement: Support for the experimental safepoint-based stop-the-world
1403 protocol on the PowerPC platform.
1404 * bug fix: Non-blocking reads from the Windows console were not necessarily
1405 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
1406 * bug fix: stability of threads on Windows has been improved upon through
1407 an updated stop-the-world protocol (thanks to Anton Kovalenko).
1409 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
1410 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
1411 (COMPILE and COMPILE-FILE still do.)
1412 * optimization: the SPARC backend now supports the precise generational
1413 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
1414 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
1415 * enhancement: add experimental support for the SB-THREAD feature and the
1416 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
1417 Threads are enabled by default, and this version of SBCL is considered
1418 to be the last and final release to officially support building with
1420 * optimization: The compiler no longer rotates loops in some cases where
1421 this transformation actually lead to worse code being generated.
1422 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
1423 symbol-macros by lexical bindings.
1424 * bug fix: stack allocation was prevented by high DEBUG declaration in
1426 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
1427 (thanks to SANO Masatoshi)
1428 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
1429 :JUNK-ALLOWED was true.
1430 * bug fix: type derivation inferred overly conservative types for
1431 unions of array types. (lp#1050768)
1433 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
1434 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
1435 source annotation of DISASSEMBLE output. Defaults to T.
1436 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
1437 WAIT-P argument added to WITH-RECURSIVE-LOCK.
1438 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
1440 * enhancement: Optional features (not enabled by default) allow the
1441 use of signals for inter-thread synchronization to be reduced on certain
1442 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
1443 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
1444 to test these experimental features. Known remaining bugs include minor
1445 thread safety issues, less timely freeing of memory by GC, and certain
1446 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
1447 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
1448 comparisons, particularly on almost-sorted inputs.
1449 * bug fix: Reading floats with large exponents no longer takes too much time
1450 before reporting that the exponent is too large.
1451 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
1452 correctly when the received datagram is larger than the provided buffer.
1453 (lp#1023438, thanks to Robert Uhl)
1454 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
1455 a SYMBOL-VALUE form with a constant symbol argument.
1456 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
1457 into a DEFCAS defined place was used as the place.
1458 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
1459 for from bit-vectors.
1460 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
1461 lead to internal errors or crashes (lp#1058799).
1462 * documentation: a section on random number generation has been added to the
1465 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
1466 * enhancement: implicit generic function warnings now specify the package
1467 in which the new generic function is being created.
1468 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
1469 updates of CAS-able places (similar to Clojure's swap!).
1470 * enhancement: run-program no longer decodes and re-encodes environment when
1471 :environment argument is not provided. (lp#985904)
1472 * enhancement: errors during compiler-macro expansion no longer cause
1473 runtime errors, only a compile-time warning, otherwise behaving as if
1474 the compiler macro had declined to expand.
1475 * optimization: On x86-64, code alignment of block headers is done with
1476 multi-byte NOPs now instead of repetitions of the single-byte NOP.
1477 * optimization: MAP-INTO is substantially faster when the target sequence is
1478 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
1479 thanks to James M. Lawrence)
1480 * optimization: the compiler no longer heap-conses to check exits in cases
1481 where the exit function is dynamic extent, or when it can prove the exit
1482 function cannot escape. (lp#1002534)
1483 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
1484 element type, and vectors that aren't SIMPLE-ARRAYs.
1485 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
1486 speed (around 1/3 the time in some cases), and a little better in terms of
1487 comparison calls. (Thanks to Takeru Ohta)
1488 * bug fix: On SPARC, a limitation on the number of code constants emittable
1489 by the compiler has been lifted, allowing certain long functions to
1490 compiled and assembled which had previously been unsupported; fixes
1491 cl-bench on this ISA (lp#1008996).
1492 * bug fix: potential for infinite recursion during compilation of CLOS slot
1493 typechecks when dependency graph had loops. (lp#1001799)
1494 * bug fix: error forms reported with some program-errors were not escaped
1496 * bug fix: functions from EVAL are now on more equal footing with functions
1497 from COMPILE. (lp#1000783, lp#851170, lp#922408)
1498 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
1499 objects as its :METHOD-COMBINATION argument, not just lists designating
1500 method combinations. (lp#936513)
1501 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
1503 * bug fix: restore build on solaris/sparc. (lp#1008506)
1504 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
1505 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
1506 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
1507 as keyword arguments no longer accidentally match unevaluated symbols
1509 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
1510 parameter was zero, now it signals an error. (lp#905817, fixed since
1512 * bug fix: run-program with :pty t no longer makes the pty as the process's
1513 controling terminal.
1514 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
1517 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
1518 * RANDOM enhancements and bug fixes:
1519 ** bug fix: the range and distribution of random integers could be
1520 catastrophically wrong when the compiler derived the type of its
1521 argument as a disjoint set of small integers.
1522 ** bug fix: the distribution of random integers is now completely
1523 uniform even when the specified limit is not a power of two.
1524 (Previously some values could be about 0.1 % more probable than
1525 others in the worst case.) (lp#309467)
1526 ** RANDOM on large integer arguments is generally faster and conses
1527 less than before; this is visible for fixnums above a length of
1528 about 24 bits, but extremely so for bignums: the old implementation
1529 used time and space quadratical in the size of the argument there,
1530 the new one is linear.
1531 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
1532 main entry point, SB-EXT:QUIT is deprecated.
1533 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
1534 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
1535 * enhancement: FASL loading no longer grabs the world-lock.
1536 * enhancement: GENCGC reclaims space more aggressively when objects being
1537 allocated are a large fraction of the total available heap space.
1539 * enhancement: backtraces show the correct number of arguments for frames
1540 called with too many arguments.
1541 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
1543 * enhancement: ASDF has been updated 2.21.
1544 * optimization: fewer uses of full calls to signed modular functions.
1546 * optimization: typechecking alien values is typically 5 x faster.
1547 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
1549 * bug fix: file compilation performance issues when dumping subtypes
1550 of CHARACTER (lp#994487)
1551 * bug fix: fixed disassembly of some SSE instructions on x86-64.
1552 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
1553 OPEN. (lp#969352, thanks to Kambiz Darabi)
1554 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
1556 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
1557 classoid even if X was not the proper name of the class. (lp#941102)
1558 * bug fix: declaration leakage between lexical environments due to careless
1559 use of NCONC in MAKE-LEXENV. (lp#924276)
1560 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
1561 *default-pathname-defaults* contains NAME or TYPE components.
1562 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
1563 from CL package, e.g. (loop . 10).
1564 * bug fix: run-program with existent or non-existent files for :output or
1565 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
1566 returns NIL instead of signalling an obscure error.
1567 * bug fix: fix miscompilation of some logand forms with large constant
1568 arguments. (lp#974406)
1569 * bug fix: account for funcallable-instance objects properly in ROOM.
1570 * bug fix: incorrect octets reported for c-string decoding errors.
1572 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
1574 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
1575 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
1576 allowing faster release of memory back to the OS. (lp#991293)
1577 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
1578 existing deadline for the dynamic scope of its body.
1579 * bug fix: compiler-internal interval arithmetic needed to be more
1580 conservative about open intervals when operated on by monotonic but not
1581 strictly-monotonic functions. (lp#975528)
1582 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
1583 it's also slightly faster. (lp#998926)
1584 * bug fix: better error messages for malformed declarations.
1586 * bug fix: define-condition didn't return the name of the defined condition.
1588 ** improved docstrings: REPLACE (lp#965592)
1590 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
1591 * bug fix: fix copy-structure. When copying from stack to heap, garbage
1592 could end up in the heap making GC unhappy.
1593 (Thanks to James Knight, lp#911027)
1595 ** SBCL can now be built using Clang.
1596 ** ASDF has been updated 2.20.
1597 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
1598 * bug fix: don't complain about a too-hairy lexical environment for inlining
1599 when the function has never been requested for inlining. (lp#963530)
1601 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
1602 * enhancements to building SBCL using make.sh:
1603 ** --fancy can be specified to enable all supported feature enhancements.
1604 ** --with-<feature> and --without-<feature> can be used to specify
1605 which features to build with.
1606 ** --arch option can be used to specify the architecture to build for.
1607 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
1608 full-blows cross-compilation.)
1609 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
1610 which allows specifying name of the default interning package for the
1612 * enhancement: when *READ-EVAL* is true, arrays with element type other than
1613 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
1614 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
1615 null alien when malloc() fails. (lp#891268)
1616 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
1617 conditions can be conveniently accessed through function with the same
1618 name, analogously to CONTINUE.
1619 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
1620 from the printer by type, causing an error marker to be printed instead.
1621 (Thanks to Attila Lendvai)
1622 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
1623 generally behave better when errors occur during printing.
1624 * enhancement: the test runner now takes a --report-skipped-tests argument
1625 to report the individual tests skipped as well as the number of skipped
1627 * enhancement: undefined functions now appear in backtraces as ("undefined
1628 function") instead of ("bogus stack frame") on x86oids.
1629 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
1630 deadlock errors are reported in an easier-to-decipher manner.
1631 * enhancement: DESCRIBE on type designators reports the expansion in more
1633 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
1634 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
1635 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
1636 * enhancement: better disassembly of segment-prefixes on x86 and other
1637 instruction prefixes (e.g. LOCK) on x86 and x86-64.
1638 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
1639 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
1640 * optimization: SUBSEQ on vectors of unknown element type is substantially
1642 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
1643 be stack-allocated. (lp#902351)
1644 * optimization: the compiler is smarter about representation selection for
1645 floating point constants used in full calls.
1646 * optimization: the compiler no longer refuses to coerce large fixnums to
1647 single floats inline, except on x86 where this limitation is still
1649 * optimization: truncation operations on integers with constant divisor
1650 arguments 1 and -1 are optimized away.
1651 * bug fix: deadlock detection could report the same deadlock twice, for
1652 two different threads. Now a single deadlock is reported exactly once.
1653 * bug fix: interval-arithmetic division during type derivation did not
1654 account for signed zeros.
1655 * bug fix: compiler error when typechecking a call to a function with
1656 non-constant keyword arguments.
1657 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
1658 * bug fix: condition slot accessors no longer cause undefined function
1659 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
1660 form that defines them. (lp#896379)
1661 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
1662 by ANSI. (lp#894202)
1663 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
1664 bogusly report NIL, T.
1665 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
1666 required arguments ignored and performed assignments to others.
1668 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
1669 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
1670 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
1671 * bug fix: redefining a function whose previous definition contained an
1672 unknown type no longer causes a style-warning. (lp#806243)
1673 * bug fix: undefined functions now appear in backtraces as ("undefined
1674 function") instead of ("bogus stack frame") on non-x86oids.
1675 * bug fix: backtraces are no longer cut off at ("undefined function") when
1676 called under certain circumstances (involving a caller-allocated stack
1678 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
1679 systems. (regression since 1.0.53)
1680 * bug fix: GC deadlocks from dladdr() on certain platforms.
1681 * bug fix: broken standard streams no longer automatically cause recursive
1682 errors on debugger entry.
1683 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
1684 (regression since 1.0.53)
1685 * bug fix: attempts to stack allocate a required argument to a function with
1686 an external entry point caused compiler-errors.
1687 * bug fix: compiler notes for failed stack allocation for a function argument
1688 no longer claim to be unable to stack allocate the function.
1689 * bug fix: COERCE now signals a type-error on several coercions to
1690 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
1691 * bug fix: missing failure-to-stack-allocate compiler notes for some
1692 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
1693 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
1695 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
1697 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
1698 * minor incompatible changes:
1699 ** RENAME-FILE on a symbolic links used to rename the linked-to file
1700 instead of the link.
1701 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
1702 directory, but now signal an error instead. Use TRUENAME to resolve the
1703 pathname if you wish to delete the linked directory, and DELETE-FILE if
1704 you wish to delete the
1705 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
1706 symbols associated with it will trigger a compile-time warning.
1707 * thread-related enhancements:
1708 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
1709 Many thanks to generous donors!)
1710 ** Threading is now more reliable on non-Linux platforms. We still don't
1711 consider threads on non-Linux platforms good enough to enable them by
1712 default, but they're in a clearly better shape now.
1713 ** Deadlines supported now on all platforms.
1714 ** All blocking functions in the threading API now have a :TIMEOUT
1716 ** Semaphore notification objects have been added to SB-THREAD.
1717 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
1718 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
1719 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1720 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
1721 using an API anologous to defining new SETFable places.
1722 * GC-related enhancements and bug fixes:
1723 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
1724 and Gb suffixes. Default is megabytes as before.
1725 ** on GENCGC targets, the default dynamic space size is now 512Mb for
1726 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
1727 exception, defaulting to mere 444Mb to fit under default ulimits.) The
1728 new defaults are in place to prevent hitting swap on low-end systems.
1729 Use build-time option --dynamic-space-size to build an SBCL with
1730 another default, or the runtime option to adjust the size at startup: a
1731 good size is at most equal to the amount of physical memory the system
1733 ** on GENCGC targets, nursery and generation sizes now default to 5% of
1735 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
1736 refuses to create SIMPLE-FUN objects.
1737 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
1739 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
1740 validation of pointer objects as GENCGC does, instead of a
1741 comparatively weak bounds-check against the heap spaces.
1742 * SB-BSD-SOCKETS bug fixes:
1743 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
1744 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
1745 systems with getaddrinfo().
1746 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
1747 safe outside systems with getaddrinfo().
1748 * enhancement: ASDF has been updated 2.019.
1749 * enhancement: special-case TCO prevention for functions which never return
1750 extended to untrusted types, keeping one more frame's worth of debug
1751 information around in many cases.
1752 * enhancement: debug-names of anonymous and local function are more
1753 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
1754 * enhancement: on win32, ABS of complex floats guards better against
1755 overflows. (lp#888410)
1756 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
1757 process exiting with code 1. (lp#676987)
1758 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
1759 the system where on the filesystem the SBCL sources themselves are
1760 located. (Thanks to Zach Beane)
1761 * enhancement: the compiler is now able to derive tighter bounds for
1762 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
1763 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
1764 correctly, even on wide-fixnum builds. (lp#887220)
1765 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
1766 resolved to directories.
1767 * bug fix: type mismatch when assigning to lexical variables no longer
1768 result in fasl-dumping internal type objects. (lp#890750)
1769 * bug fix: type mismatch on (SETF AREF) and function return values no
1770 longer result in fasl-dumping internal type objects.
1771 * bug fix: With several combinations of argument types, for example (EXPT
1772 <integer> <(complex double)>), EXPT now uses double-precision throughout
1773 instead of partially calculating only to single-precision. (lp#741564;
1774 thanks to Lutz Euler)
1775 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
1776 objects when interrupted by GC on PPC.
1778 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
1779 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
1780 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
1781 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
1782 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
1783 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
1784 targets is now 63 bits (up from 61).
1785 * enhancement: DESCRIBE now reports a lambda-list and source location
1786 for complext setf-expanders.
1787 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
1788 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
1789 of multiple-valued places to be set to NIL, instead of signalling an
1790 error (per a careful reading of CLHS 5.1.2.3).
1791 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1792 * bug fix: repair crash in x86oid darwin signal handling emulation
1793 when built with certain compilers.
1794 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1795 rotation arguments on x86-64. (lp#882151)
1796 * bug fix: low-level control flow optimisations could result in bogus
1797 code in functions with tail and non-tail calls to local functions on
1798 x86oids. (lp#883500)
1799 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1800 to emit literal characters > (code-char 4095), for comparisons with
1801 constant characters.
1802 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1803 on 64 bit platforms. (lp#881445)
1804 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1805 delete the wrong file when using relative pathnames. (lp#882877)
1806 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1807 sequences and :KEY NIL.
1809 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1810 * enhancement: ASDF has been updated to version 2.017.
1811 * enhancement: the --core command line option now accepts binaries with
1813 * enhancement: when built with :sb-core-compression, core files (regular
1814 or executable) can be compressed with zlib. Use the :COMPRESSION
1815 argument to SAVE-LISP-AND-DIE to specify a compression level.
1816 * enhancement: --[no-]merge-core-pages determines whether the runtime
1817 hints the operating system that identical core pages between SBCL
1818 processes should share the same physical memory. Default is to only
1819 enable this for compressed cores.
1820 * optimization: SLEEP no longer conses.
1821 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1822 or bit-vectors when using the standard pretty-print dispatch table.
1823 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1825 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1826 AREF, CHAR, etc. (lp#826971)
1827 * bug fix: compiler-errors causes by integer arguments with composed of
1828 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1829 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1830 expressions. (lp#770184)
1831 * bug fix: complex single float literals are correctly aligned when used
1832 as arguments of arithmetic operators.
1833 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1834 fixnum is correct. (reported by Peter Keller)
1835 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1836 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1838 * bug fix: redefining classes such that slots with custom allocation are
1839 added or removed works again.
1841 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1842 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1843 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1844 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1845 * enhancement: added support for socket keepalive timeout intervals
1846 and probe counts on Linux.
1847 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1848 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1849 * enhancement: added new toplevel options --quit and --non-interactive
1851 * enhancement: the Windows port of SBCL now builds and runs on Wine
1852 (thanks to Anton Kovalenko).
1853 * enhancement: more, and more correct, SSE instruction definitions on
1854 x86-64 (thanks to Alexander Gavrilov).
1855 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1856 to help the processor execute spin loops, when applicable. Currently
1857 implemented for x86 and x86-64.
1858 * optimization: unsigned integer divisions by a constant are implemented
1859 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1860 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1861 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1862 instructions. (lp#814688)
1863 * bug fix: COERCE to unfinalized extended sequence classes now works.
1864 (reported by Jan Moringen; lp#815155)
1865 * bug fix: a compiler error during typecheck generation, reported by Eric
1866 Marsden. (lp#816564)
1867 * bug fix: obsolete instance protocol fires when shared slots are added
1869 * bug fix: fixed-format floating point printing with scaling factors.
1871 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1872 backtraces. (lp#818460)
1873 * bug fix: better backtraces for interrupted syscall frames on x86.
1875 * bug fix: SSE comparison instructions can be disassembled even when one
1876 operand is in memory. (lp#814702)
1877 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1878 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1879 type information associated with the VALUES form.
1880 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1882 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1883 first write (lp#561642).
1884 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1885 * bug fix: bound propagation involving conversion of large bignums to
1886 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1888 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1889 functions; reported by Lutz Euler (lp#826459).
1890 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1893 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1894 * enhancement: errors from FD handlers now provide a restart to remove
1895 the offending handler.
1896 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1898 * enhancement: location of user or system initialization file can now easily
1899 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1900 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1901 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1902 the thunk, as a keyword argument, :arguments.
1903 * enhancement: constraint propagation is simplified (and sped up) when
1904 COMPILATION-SPEED > SPEED.
1905 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1906 * enhancement: debugger understands &MORE arguments better.
1907 * optimization: extracting bits of a single-float on x86-64 has been
1908 optimized. (lp#555201)
1909 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1910 when (> SPEED SPACE).
1911 * optimization: local call trampolines (x86 and x86-64) are emitted
1913 * optimization: implicit value cells for dynamic-extent closed-over bindings
1914 on x86 and x86-64 can hold unboxed values as well.
1915 * meta-optimization: improved compilation speed, especially for large
1916 functions. (lp#792363 and lp#394206)
1917 * bug fix: bound derivation for floating point operations is now more
1918 careful about rounding possibly closing open bounds. (lp#793771)
1919 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1920 backwards incompatible change in 1.0.48.27)
1921 * bug fix: occasional debugger errors in when a type-error occured in a
1922 function with dynamic-extent &rest list.
1923 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1924 boa-construtors can be used to initialized structure slots.
1925 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1926 (lp#795705, regression)
1927 * bug fix: DIRECTORY works better on logical pathnames.
1928 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1929 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1930 * bug fix: the compiler no longer constant-folds NaNs in
1931 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1932 * bug fix: FORMAT now handles floating point rounding correct, eg.
1933 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1935 * bug fix: style warning during lambda-list introspection of generic
1936 functions with both optional and key argments.
1937 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1938 folding. (lp#729765)
1939 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1942 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1943 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1944 interrupts for its body.
1945 * enhancement: source locations are now available for files loaded as
1946 source, compile-time-too evaluation, and initialization files.
1947 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1948 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1949 when a temporary file is used for compilation.
1950 * enhancement: ASDF has been updated to version 2.015.3.
1951 * enhancement: backtraces involving frames from the default evaluator are
1953 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1955 * enhancement: more informative compile-time warnings and runtime errors for
1956 type-errors detected at compile-time.
1957 * enhancement: deadlock detection for mutexes and spinlocks.
1958 * enhancement: dynamic-extent for &rest lists stack allocate only their
1959 spines, not their argumets. While portable code should not rely on this,
1960 particularly in combination with inlining, it should make dynamic-extent
1961 easier to use safely.
1962 * enhancement: SB-POSIX improvements:
1963 ** WNOHANG and WUNTRACED are exported.
1964 ** SYSCALL-ERROR now also provides the name of the failing system call.
1965 * enhancement: --script improvements:
1966 ** errors on standard input, output, and error streams are handled and
1967 cause scripts to exit silently, making them easier to use in shell
1969 ** backtraces from scripts now go to standard error instead of the
1970 terminal even if one is available.
1971 ** --script can be an argument, causing the script to be loaded from
1973 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1974 strings to foreign memory.
1975 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1976 a file, making it easier to understand heap dynamics.
1977 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1978 allows the compiler to automatically elide rest-list allocation so long as
1979 the call sites are in functions that the compiler knows cannot escape.
1981 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1982 especially in safe code when none of the required arguments have changed
1984 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1985 uninterruptible, as well as blocking reads from socket streams created
1986 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1987 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1988 from the to-char if the from-char is not a dispatch-macro character.
1989 * bug fix: references to undefined variables in function calls that are
1990 optimized away now signal a runtime error. (lp#722734)
1991 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1992 types from a function defined in the same file. (regression from
1994 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1996 * bug fix: spurious errors during QUIT when standard streams were closed.
1998 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1999 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
2000 years, is now no longer supported.
2001 * enhancement: read() and write() have been added to SB-POSIX.
2002 * enhancement: types of DEFSTRUCT constructors are proclaimed more
2003 accurately, allowing better typechecking of call-sites.
2004 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
2005 are no longer caught. (reverted to pre 1.0.34 behaviour)
2006 * optimization: slightly faster ISQRT. (lp#713343)
2007 * bug fix: better support for Solaris /bin/sh in sh-based tests.
2008 * bug fix: TRACE behaves better when attempting to trace undefined
2009 functions. (lp#740717)
2010 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
2011 to (FUNCALL #'(LAMBDA ...) ...).
2012 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
2013 a compile-time error. (lp#720382)
2014 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
2016 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
2017 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
2018 optimization. (regression from 1.0.45.18/1.0.46.15)
2019 * bug fix: package locks did not protects against compile-time side-effects
2020 of DEFUN. (lp#675584)
2021 * bug fix: --dynamic-space-size argument is validated more carefully.
2023 * bug fix: memory fault from printing a malformed simple-condition.
2025 * bug fix: redefining classes so that slot-definition classes change now
2026 engages the obsolete instance protocol. (lp#766271)
2027 * bug fix: constant improper lists could break source coverage recording.
2029 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
2030 could exhaust stack.
2032 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
2033 * bug fix: fix mach port rights leaks in mach exception handling code on
2034 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
2036 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
2037 * enhancement: redefinition warnings for macros from different files. (lp#434657)
2038 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
2039 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
2040 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
2041 processed using EVAL -- now the appropriate toplevel form is reported instead.
2042 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
2043 declarations. (lp#726331)
2044 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
2045 that NIL/NULL is excluded from the type.
2046 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
2048 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
2049 and its compatriots.
2050 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
2051 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
2052 stack-allocated values out of their dynamic-extent. (lp#310175)
2053 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
2054 x86-64 builds caused a type-error.
2055 * bug fix: calling COMPILE with something else than a lambda-expression as the
2056 second argument reports a more sensible error. (lp#718905)
2057 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
2058 are detected. (lp#520607)
2059 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
2061 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
2062 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
2063 methods. (regression from 1.0.45.18)
2064 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
2065 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
2066 * bug fix: several foreign functions accepting string also accepted NIL and
2067 consequently caused a memory fault at 0 now signal a type-error instead.
2069 * bug fix: under rare circumstances, constraint propagation could rewrite a
2070 variable reference to refer to a variable not in scope, causing an error
2071 during physical environment analysis when attempting to close over the
2072 variable. (lp#551227)
2073 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
2075 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
2076 * enhancement: largefile support on Solaris.
2077 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
2078 arguments (lp#710017)
2079 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
2080 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
2082 * optimization: ERROR and CERROR are approximately 5 times faster.
2083 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
2084 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
2085 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
2086 up instance creation in those cases.
2087 * optimization: arithmetic operations with multiple constant arguments in now
2088 have them reduced at compile-time. (lp#676414)
2089 * optimization: determining current character position on string-streams for
2090 pretty-printing was overly slow.
2091 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
2092 lifetime analysis to overwrite closed-over variables (lp#681092).
2093 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
2094 were not handled correctly (lp#713063).
2095 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
2097 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
2098 mistake. (lp#667297).
2099 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
2100 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
2101 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
2102 unintern the wrong symbol with the same name. (lp#693796)
2103 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
2104 making it possible to restore the initial table if it has been messed up.
2107 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
2108 * enhancement: ~/ and ~user/ are treated specially in pathnames.
2109 Refer to documentation for details.
2110 * enhancement: ASDF has been updated to version 2.010.
2111 * optimization: mutated closed-over variables that are only accessed by
2112 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
2113 declared to be DYNAMIC-EXTENT) are stored directly in their containing
2114 stack frame, rather than allocating a VALUE-CELL (lp#586103).
2115 * optimization: UNWIND-PROTECT cleanup functions are now declared
2117 * bug fix: backtracing function with &REST arguments now shows the full
2118 argument list. (lp#310173)
2119 * bug fix: return types for functions with complex lambda-lists are now
2120 derived properly (lp#384892)
2121 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
2122 long string arguments slowed the compiler down to a crawl.
2123 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
2124 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
2125 in the DEFMETHOD body.
2126 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
2127 messages, being instead replaced with the corresponding function name.
2128 * bug fix: don't derive overly complex unions of numeric types for arithmetic
2129 operators. (lp#309448)
2131 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
2132 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
2133 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
2134 * enhancement: ALLOCATION-INFORMATION also provides the page the object
2136 * enhancement: default dynamic-space size can be configured at build-time
2137 without touching source, using the --dynamic-space-size argument to make.sh.
2138 * enhancement: DESCRIBE recognizes symbols naming optimization policy
2139 qualities, and mentions ALWAYS-BOUND declarations.
2140 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
2142 * enhancement: ASDF has been updated to 2.009.
2143 * enhancement: the system detects known type-erros in calls better,
2144 signalling a full warning about violated proclaimed FTYPEs and violations
2145 of derived FTYPEs within the same file, including self-calls.
2146 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
2147 * optimization: constant-folding exploits numeric and character types, in
2148 addition member types.
2149 * optimization: numeric, character and member types that are inhabited by
2150 exactly one value are tested with EQL.
2151 * optimization: more conditional branches are eliminated during IR1.
2152 Branches are simplified before performing if/if-conversion, and simple
2153 equivalent branches (that only read the same constant or variable) are
2155 * improvements to the Windows port:
2156 ** change: canonical unparsing form for pathname namestrings now uses / as
2157 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
2158 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
2159 on Windows. (thanks to Kalyanov Dmitry)
2160 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
2162 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
2163 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
2164 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
2165 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
2167 * bug fix: interrupts arriving during CL:OPEN caused an error.
2168 * bug fix: overeager character buffering could cause input to block
2169 spuriously when reading from a pipe (lp#643686)
2170 * bug fix: more efficient timer expiry should avoid starvation on systems
2171 where number of SIGALRMs per second is restricted. (lp#375515)
2172 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
2173 * bug fix: compile-times no longer scale linearly with the size of
2174 quoted lists in source-code. (lp#654289)
2175 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
2176 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
2177 so badly. (lp#654485)
2178 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
2179 an error for eg. STRUCTURE. (lp#458015)
2180 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
2181 (lp#613871, thanks to Roman Marynchak)
2182 * bug fix: more reliable &REST list type derivation. (lp#655203)
2183 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
2184 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
2185 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
2186 also declared NOTINLINE. (lp#655581)
2187 * bug fix: the compiler could attempt to emit constant left shifts of
2188 greater value than n-word-bits. (lp#309063)
2189 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
2190 type information for the function being set. (lp#659220)
2191 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
2192 containing self-calls were recompiled with a new signature, and failed
2193 to warn when a self-call using the old signature was left in. (lp#655126)
2194 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
2195 :DEFAULT when the default external had character size other than 8 bits.
2197 * bug fix: derived types of functions in the same file were implicitly
2198 trusted, leading to potential heap corruption when those function were
2199 defined incompatibly. (lp#657499)
2200 * bug fix: existing ASDF source registries are ignored when building
2201 contribs (lp#659105)
2202 * bug fix: short-form DEFSETF checks that the second argument is a symbol
2203 (lp#655824, thanks to Roman Marynchak)
2204 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
2205 package-lock violation was detected. (lp#660752)
2206 * bug fix: the system can store different docstrings for a single function
2207 under different names. (lp#661631, regression from 1.0.29.24)
2208 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
2209 properly. (lp#384801)
2210 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
2211 of specified length could confuse the type derivation in unsafe code.
2213 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
2214 fork with multiple Lisp threads running is made on every platform,
2215 not just Darwin. (lp#451111)
2216 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
2217 around when core was saved, which could cause undefined behaviour when the
2219 * bug fix: Allow UNTRACE of functions that are no longer defined
2220 (lp#667657, thanks to Attila Lendvai)
2221 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
2222 compile-time warning (lp#664373, thanks to Stas Boukarev)
2224 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
2225 * incompatible change: FD-STREAMS no longer participate in the serve-event
2226 event-loop by default. (lp#316072)
2227 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
2228 affects streams from CL:OPEN.
2229 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
2230 default, but this is liable to change: applications needing serve-event
2231 for socket streams should explicitly request it using :SERVE-EVENTS T
2233 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
2235 * enhancement: CLOS effective method functions and defclass slot typechecking
2236 function now have debug names for use in backtraces and profiles.
2237 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
2239 * enhancement: symbols are printed using fully qualified names in several
2240 error and warning messages which are often associated with package
2241 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
2242 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
2243 thanks to Andrew Golding)
2244 * bug fix: reading /proc files on Linux works. (lp#425199)
2245 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
2247 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
2248 breaking code that tried to write the value of a printer control variable.
2249 (lp#581564, thanks to Stas Boukarev)
2250 * bug fix: WRITE compiler macro did not handle output stream designators
2251 correctly. (lp#598374, thanks to Stas Boukarev)
2252 * bug fix: better availability of names of foreign functions in backtraces
2253 on Linux. (lp#626962, thanks to Stas Boukarev)
2254 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
2255 lp#627581, thanks to Josh Elsasser and Jim Wise)
2256 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
2257 thanks to Josh Elsasser)
2258 * bug fix: using aliases for builtin classes as defmethod specializers
2259 without adding DEFTYPEs for them works. (lp#618387)
2260 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
2262 * bug fix: legally dynamic-extent lists and vectors used as
2263 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
2264 * bug fix: inline-expansion creating references to dead lambda-variables
2265 (lp#454681, thanks to Alexey Dejneka)
2266 * bug fix: better error message for bogus numerical arguments to RANDOM.
2267 (lp#598986, thanks to Stas Boukarev)
2268 * bug fix: the compiler occasionally inlined references from incompatible
2269 environments occurs. (lp#308951)
2270 * bug fix: the compiler threw an error when trying to compile a local
2271 function (labels or flet) known to take a specialized complex argument.
2272 (not in launchpad, reported by sykopomp in #lispgames)
2273 * bug fix: package-locks failed to protect against compile-time effects of
2274 DEFUN when the symbol previously had a macro definition. (lp#576637)
2275 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
2276 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
2277 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
2278 * bug fix: evaluation in debugger REPL works using the global context when
2279 in frames that do not have sufficient debug information.
2280 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
2282 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
2284 * bug fix: interrupt taking longer than the requested period caused SLEEP
2285 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
2287 changes in sbcl-1.0.42 relative to sbcl-1.0.41
2289 ** Cross-compilation host is now specified to make.sh using
2290 command-line argument --xc-host=<command> instead of a positional
2291 argument. (thanks to Daniel Herring)
2292 ** Install location can be specified to make.sh using command-line
2293 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
2294 * optimization: The default implementation of
2295 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
2296 * enhancement: Explicit memory barrier operations are now available for use
2297 by multithreaded code. See documentation for details.
2298 * enhancement: Experimental support for threading on Linux/PPC.
2299 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
2300 * bug fix: EXPT signals an error if first argument is a zero and second
2301 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
2302 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
2303 (lp#576594, thanks to Roman Marynchak)
2304 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
2305 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
2307 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
2308 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
2309 cached, leading to many fewer expensive calls to
2310 COMPUTE-APPLICABLE-METHODS.
2311 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
2312 CLASS argument, search for and call an appropriate optimized ctor function
2314 * bug fix: WRITE always returns the correct value.
2316 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
2317 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
2318 * bug fix: Name conflicts between symbols passed as arguments to a single
2319 call to IMPORT no longer add multiple symbols with the same name to the
2320 package (detectable via DO-SYMBOLS).
2321 * bug fix: support building without the dlshim on darwin x86 and x86-64
2323 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
2325 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
2326 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
2328 * bug fix: linkage-table entries on PPC now no longer overflow their
2329 space allocation (potentially causing crashes if they are written out
2331 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
2332 platforms, preventing the GC from seeing stale pointers on the control
2333 stack in subsequent GCs (which would, and does, break invariants).
2334 * bug fix: 32-bit unicode external formats now work on big-endian systems.
2335 * bug fix: Literal characters with code points greater than about 32767
2336 now work on PPC UNICODE builds.
2337 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
2338 high order bits are explicitly cleared out. In some contrived situations,
2339 this could lead to wrong results in mixed real/complex float arithmetic.
2340 * bug fix: Fix function/macro redefinition warnings when building with
2341 clisp. (lp#576787, thanks to Josh Elsasser)
2342 * new platform: experimental support for ppc/openbsd (thanks to Josh
2344 * bug fix: Floating-point traps now work on ppc/linux.
2346 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
2347 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
2348 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
2349 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
2350 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
2351 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
2352 SB-THREAD:GRAB-MUTEX.
2353 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
2354 contain additional data structures and tools for concurrent programming;
2355 at the moment it contains a lock-free queue, and a lock-free mailbox
2357 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
2358 GET-MUTEX but takes &key rather than &optional parameters. Also added
2359 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
2361 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
2362 SB-THREAD:WAIT-ON-SEMAPHORE.
2363 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
2365 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
2366 conditions to defer the deadline for forever.
2367 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
2369 * enhancement: errors from NO-APPLICABLE-METHOD and
2370 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
2371 generic function call.
2372 * enhancement: SB-BSD-SOCKET improvements
2373 ** sockets and socket streams now have a more informative printed
2374 representation based on the corresponding SOCKET-NAME and
2376 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
2378 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
2379 CL:CLOSE when appropriate, and no longer disassociates the stream
2380 from the socket if close failed. (lp#543951)
2381 * improvements to the instrumenting profiler
2382 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
2383 ** optimization: counters no longer use locks for the overflow mode.
2384 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
2385 incurred an off-by-one miscount.
2386 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
2387 * enhancement: improved DEFMETHOD pretty-printing.
2388 * enhancement: perform range reduction when arguments are too large for
2389 x87's transcendentals (instead of returning 0). (lp#327192)
2390 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
2391 some of CL-PPCRE's macros. (lp#570079)
2392 * enhancement: our machine code is slightly less hostile to valgrind on
2394 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
2395 to Robert Swindells and Aleksej Saushev)
2396 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
2397 * bug fix: a rare case of startup-time page table corruption.
2398 * bug fix: a semaphore with multiple waiters and some of them unwinding due
2399 to timeouts could be left in an inconsistent state.
2400 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
2401 * bug fix: misoptimization of multiplication by one in
2402 (SB-C::FLOAT-ACCURACY 0) policies.
2403 * bug fix: miscounts in SB-PROFILE.
2404 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
2405 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
2406 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
2407 up itself" (March 2010) for further details.
2408 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
2409 against length of the list if the element is found before the specified
2410 END is reached. (thanks to Alec Berryman, lp#554385)
2411 * bug fix: errors signalled during package graph modification no longer
2412 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
2413 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
2414 :SB-DOC feature. (lp#552564)
2415 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
2416 * bug fix: more robust runtime executable path detection. (lp#375549)
2417 * bug fix: GCD always returns positive values. (lp#413680)
2418 * bug fix: Converting division to multiplication by reciprocal handles
2420 * bug fix: We were too eager in eliding range reduction tests on x87.
2421 The maximal magnitude is 2^63, not 2^64.
2422 * bug fix: Transforms for TRUNCATE don't die when the result is completely
2424 * bug fix: Maybe restore buildability on Alpha.
2425 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
2427 * bug fix: RANDOM-STATE can be printed readably again.
2428 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
2429 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
2430 types) could result in type mismatches during compilation.
2432 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
2433 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
2434 stack frame thrown from.
2435 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
2436 compiler optimization qualities inside dynamic extent of its body.
2437 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
2438 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
2440 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
2441 constraint propgation, allowing better compilation eg. when used to
2442 access structures with WITH-SLOTS. (lp#520366)
2443 * optimization: the compiler is now more aware of the type of the underlying
2444 storage vector for multidimensional simple arrays resulting in better code
2445 for accessing such arrays.
2446 * optimization: passing NIL as the environment argument to TYPEP no longer
2447 inhibits optimizing it. (lp#309788)
2448 * optimization: more efficient register usage when handling single-float
2449 arguments on x86-64. (thanks to Lutz Euler)
2450 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
2451 pre-allocated temporary vectors. (lp#496249)
2452 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
2453 in :INITIAL-CONTENTS. (lp#523612)
2454 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
2455 functions. (lp#524707)
2456 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
2457 WITH-SLOTS usages during compilation.
2458 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
2459 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
2460 all x86oid platforms with :UD2-BREAKPOINTS target feature.
2461 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
2462 instruction (tested on x86oid linux with ud2-breakpoints).
2463 * bug fix: slam.sh now works on win32.
2464 * bug fix: better differences of numeric types. (lp#309124)
2465 * bug fix: arrays declared intersection and union types can have their
2466 upgraded element type derived. (lp#316078)
2467 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
2468 threads started during profiling. (lp#472499)
2469 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
2471 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
2472 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
2473 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
2474 values instead of signaling an error. (lp#309093)
2475 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
2477 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
2478 declarations (lp#497321)
2479 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
2480 and failed to detect circular lists (lp#452008)
2481 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
2483 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
2484 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
2485 due to it, so that handlers can run.
2486 * bug fix: reparsing undefined types if they have become defined since
2487 parsing. (lp#309128)
2488 * bug fix: missing &REST type in a proclamation for a function with both
2489 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
2490 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
2491 expanded calls (lp#542174)
2492 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
2493 than just at toplevel form.
2495 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
2496 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
2497 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
2498 but work on type specifiers.
2499 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
2500 to name a type specifier.
2501 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
2502 specifier is valid where "valid" basically means "would be accepted as
2503 second argument of TYPEP".
2504 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
2505 returns the function's declared, or derived FTYPE.
2506 * new feature: SB-POSIX now supports accessing the d_ino member of
2507 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
2508 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
2509 provide for seeding a RANDOM-STATE object with user-provided data or
2510 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
2511 attempt to initialize the returned state from the operating system's
2512 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
2513 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
2514 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
2515 * bug fix: Fix grammar and style issues for the docstrings of
2516 printer-related variables and functions. (Thanks to mon_key; launchpad
2518 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
2520 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
2521 in a row even though a handler defered the deadline long into the
2523 * bug fix: A deadline handler was run without interrupts enabled for a
2524 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
2525 in infinitely spinning, non-killable threads.
2526 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
2527 before reaching the erring stack frame.
2528 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
2529 real power. (launchpad bug lp#525949)
2530 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
2531 GENCGC platforms. (launchpad bug lp#529014)
2532 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
2533 (launchpad bug lp#525916)
2534 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
2535 (Thanks to Robert Goldman)
2537 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
2538 * optimization: ROUND with a single single-float or double-float argument
2539 is properly inlined when possible.
2540 * optimization: Slightly better code is generated for integer<->float
2541 conversions and for single-float<->double-float conversions on x86-64.
2542 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
2543 code for 32-bit and 64-bit rotations on x86-64.
2544 * bug fix: The install script changes the ownership of directories as well
2545 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
2546 launchpad bug lp#508485)
2547 * bug fix: TRUNCATE with a single single-float or double-float argument is
2548 properly inlined when possible. (launchpad bug lp#489388)
2549 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
2550 no longer causes a compiler error on x86 and ppc.
2551 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
2552 always relative to *READTABLE* rather than the passed argument.
2554 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
2555 * minor incompatible change: threading support is now enabled by default
2557 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
2559 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
2560 are now caught and reported just like errors during macroexpansion.
2561 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
2562 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
2563 * enhancement: ASDF systems can now depends on SB-QUEUE.
2564 * fixes and improvements related to Unicode and external formats:
2565 ** bug fix: error handling and restart usage in the ucs-2 external format
2567 ** there is now an implementation of the ucs-4 external format.
2568 ** the utf-16 and utf-32 external formats are supported.
2569 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
2570 in the environment. setenv() and unsetenv() are also provided. (reported by
2571 Fare Rideau; launchpad bug lp#460455)
2572 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
2573 loading. This ensures sensible errors for .FASL files from other
2574 implementations on case-insensitive filesystems. (reported by Willem
2575 Broekema; launchpad bug lp#489417)
2576 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
2577 Willem Broekema; launchpad bug lp#489698).
2578 * bug fix: some minor code rearrangements to reenable warning-free building
2579 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
2580 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
2582 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
2585 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
2586 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
2587 * improvement: support O_LARGEFILE access to files larger than 2GB on
2588 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
2589 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
2590 definitions for methods specializing on the passed class itself.
2591 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
2592 definitions for methods specializing on the passed class itself, or on
2594 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
2595 about itself during the build (e.g. for M-? in Slime), if this flag is
2596 enabled in customize-target-features.lisp. This will increase the core
2597 size by about 5-6mb, though, so it's mostly interesting to SBCL
2599 * new feature: various GENCGC tuning parameters have been experimentally
2600 documented and exported from SB-EXT. See documentation for details.
2601 * fixes and improvements related to Unicode and external formats:
2602 ** the Unicode character database has been upgraded to the
2603 Unicode 5.2 standard, giving names and properties to a number of new
2604 characters, and providing a few extra characters with case
2606 ** improvement: restarts for providing replacement input/output on coding
2607 errors for fd-stream external formats.
2608 ** improvement: where :<encoding> is a keyword corresponding to an
2609 external format the system supports, it is now possible to specify
2610 (:<encoding> :replacement <character>) as an external format which will
2611 automatically substitute <character> on encoding or decoding errors for
2612 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
2614 ** improvement: the file streams underlying the standard streams (such as
2615 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
2616 which uses the replacement mechanism to handle encoding errors,
2617 preventing various infinite error chains and unrecoverable I/O
2619 ** minor incompatible change: the utf-8 external format now correctly
2620 refuses to encode Lisp characters in the surrogate range (char-codes
2621 between #xd800 and #xdfff).
2622 ** fix a typo preventing conversion of strings into octet vectors
2623 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
2625 ** fix a bug in the octet multibyte handling of decoding errors and the
2626 USE-VALUE restart. (launchpad bug lp#314939)
2627 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
2628 restart on fd-stream decoding errors.
2629 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
2630 error is near the end of file.
2631 ** fix a double-error case in unibyte octet conversions, when the first
2632 use of USE-VALUE is ignored.
2633 ** fix bugs in handling of undefined code points in unibyte encodings.
2634 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
2635 streams after an UNREAD-CHAR.
2636 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
2637 object is allocated in a boxed region of dynamic space.
2638 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
2639 fork with multiple Lisp threads running is made, instead of going
2640 ahead with unpredictable consequences. (reported by Leslie Polzer)
2641 * bug fix: uses of slot accessors on specialized method parameters within
2642 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
2643 error while finalizing the class. This fix may cause classes with slot
2644 accessors to be finalized later than previously. (reported by Lars Rune
2645 Nøstdal; launchpad bug lp#473699)
2646 * bug fix: restore buildability on the MIPS platform. (regression from
2647 1.0.30.38, reported by Samium Gromoff)
2648 * bug fix: inspecting closures is less likely to fail with a type error.
2649 * bug fix: no timer starvation when setting the system clock back.
2650 (launchpad bug lp#460283)
2651 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
2652 standard pprint dispatch table as specified by CLHS.
2653 * bug fix: give CLISP a hint about a type declaration to enable it to build
2654 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
2656 * bug fix: correctly dump literal objects in defaulting forms of arglists.
2657 (reported by Attila Lendvai; launchpad bug lp#310132)
2658 * bug fix: distinguish in type specifiers between arrays that might be
2659 complex and arrays that are definitely complex. (launchpad bug lp#309129)
2660 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
2661 type. (reported by Levente Mészáros; launchpad bug lp#485972)
2662 * bug fix: setting the value of a symbol-macro within a method in the
2663 presence of type declarations works properly again. (reported by Iban
2664 Hatchondo; launchpad bug lp#485019)
2666 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
2667 * optimization: faster FIND and POSITION on strings of unknown element type
2668 in high SPEED policies. (thanks to Karol Swietlicki)
2669 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
2671 * improvement: better error signalling for bogus parameter specializer names
2672 in DEFMETHOD forms (reported by Pluijzer)
2673 * bug fix: DELETE-FILE once again works on logical pathnames (regression
2675 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
2677 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
2678 removes previous default initargs (reported by Lars Rune Nøstdal and
2680 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
2681 lambda-lists. (reported by Peter Seibel)
2682 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
2683 correctly when starting from an executable core without saved runtime
2684 options (reported by Faré Rideau, thanks to Zach Beane)
2685 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
2686 an optimization note instead. (reported by Martin Cracauer)
2687 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
2688 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
2689 new process group if it doesn't need to share stdin with the sbcl
2690 process. (thanks to Leslie Polzer)
2691 * bug fix: SATISFIES could be misoptimized to refer to a local function.
2692 (reported by Stanislaw Halik)
2694 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
2695 * improvement: stack allocation is should now be possible in all nested
2696 inlining cases: failure to stack allocate when equivalent code is manually
2697 open coded is now considered a bug.
2698 * improvements related to Unicode:
2699 ** the Unicode character database has been upgraded to the
2700 Unicode 5.1 standard, giving names and properties to a number of new
2701 characters, and providing a few extra characters with case
2703 ** the system now recognizes and produces names for Unicode Hangul
2704 syllable characters.
2705 ** the EBCDIC-US external-format is now supported for octet operations
2706 (as well as for stream operations).
2707 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
2708 be used to output toplevel compile-time effects into a separate .CFASL
2710 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
2711 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
2713 * optimization: TRUNCATE on known single- and double-floats is upto 25%
2715 * optimization: division of floating point numbers by constants uses
2716 multiplication by reciprocal when an exact reciprocal exists.
2717 * optimization: multiplication of single- and double-floats floats by
2718 constant two has been optimized.
2719 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
2720 sufficient type information is available. (thanks to Leslie Polzer)
2721 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
2722 known structure objects are as efficient as defstruct generated accessors.
2723 * optimization: unused vector creation can now be optimized away.
2724 * improvement: ASDF systems can now depends on SB-INTROSPECT.
2725 * improvement: a STYLE-WARNING is signalled when a generic function
2726 clobbers an earlier FTYPE proclamation.
2727 * improvement: the compiler is able to track the effective type of
2728 generic function across method addition and removal even in the
2729 absence of an explicit DEFGENERIC.
2730 * improvement: DESCRIBE now reports on symbols naming undefined
2731 but assumed or declared function as well.
2732 * improvement: recompilation of systems using SB-GROVEL now works
2733 (thanks to Leslie Polzer)
2734 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
2735 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
2737 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
2738 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
2739 well as user defined declaration names.
2740 ** VARIABLE-INFORMATION is now aware of alien variables.
2741 * improvement: improved address space layout on OpenBSD (thanks to Josh
2743 * improvement: pretty-printing of various Lisp forms has been improved
2744 (thanks to Tobias Rittweiler)
2745 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
2746 unused were deleted in safe code. (reported by John Fremlin)
2747 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
2749 * bug fix: some out-of-line array predicates were missing (reported by
2751 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
2753 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
2754 (thanks to Larry D'Anna)
2755 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
2756 as well. (reported by Josh Elsasser)
2757 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
2758 leading to possible attempts to delete the same file twice. See docstring
2759 on DELETE-FILE for details. (reported by John Fremlin)
2760 * bug fix: DELETE-FILE once again deletes the file named by the pathname
2761 designator argument, rather than its truename. (reported by Luis
2763 * bug fix: the low-level debugger had 32-bit assumptions and was missing
2764 information about some array types. (thanks to Luis Oliveira)
2765 * bug fix: moderately complex combinations of inline expansions could
2766 be miscompiled if the result was declared to be dynamic extent.
2767 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
2768 form (+ <variable> <integer>) were miscompiled under certain
2770 * bug fix: in some cases no compiler note about failure to stack allocate
2771 was emitted, even if the objects were in fact heap allocated.
2772 * bug fix: minor violation of "otherwise inaccessible" rule for stack
2773 allocation could cause objects users might reasonably expect to
2774 be heap allocated to be stack allocated.
2775 * bug fix: DESCRIBE signalled an error for generic functions under
2776 certain circumstances. (thanks to Leslie Polzer)
2777 * bug fix: Fixed spelling of an error message.
2779 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
2780 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
2781 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
2782 of SB-THREAD:THREAD-ERROR-THREAD.
2783 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
2784 * new feature: docstrings for local and anonymous functions are no longer
2785 discarded. (thanks to Leslie Polzer)
2786 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
2787 values in other threads.
2788 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
2789 about object allocation.
2790 * optimization: division of a real float by a complex float is implemented
2791 with a specialised code sequence.
2792 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2793 keywords is an order of magnitude faster.
2794 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2795 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2796 methods, and similarly for non-standard metaclass classes as long as there
2797 are no methods additional on MAKE-INSTANCE.
2798 * optimization: more efficient type-checks for FIXNUMs when the value
2799 is known to be a signed word on x86 and x86-64.
2800 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2801 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2803 * optimization: compiler is smarter about delegating argument type checks to
2805 * optimization: several character functions are now compiled somewhat more
2806 efficiently. (reported by Lynn Quam)
2807 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2808 * improvement: less unsafe constant folding in floating point arithmetic,
2809 especially for mixed complex/real -float operations.
2810 * optimization: constant double and single floats are stored in native
2811 unboxed format on x86[-64].
2812 * optimization: smarter code for arithmetic operations with constant floats,
2813 complex floats, or integers on x86[-64].
2814 * optimization: smarter code for conjugate/multiplication of float complexes
2815 and abs/negate of floats on x86-64.
2816 * optimization: more efficient complex float and real float operations on
2818 * improvement: complex float division is slightly more stable.
2819 * improvement: DESCRIBE output has been reworked to be easier to read and
2820 contains more pertinent information.
2821 * improvement: failure to provide requested stack allocation compiler notes
2822 provided in all cases (requested stack allocation not happening without a
2823 note being issued is now considered a bug.)
2824 * bug fix: SB-POSIX exports the documented types and functions
2825 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2826 types. (reported by "abhi")
2827 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2828 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2829 (thanks to Paul Khuong)
2830 * bug fix: looping around HANDLER-CASE could silently consume stack space
2831 on each iteration. (reported by "foobar")
2832 * bug fix: better error signalling when calls to functions seeking elements
2833 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2834 (reported by Tobias Rittweiler)
2835 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2836 directory components now works as it used to. (various prolems reported by
2837 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2838 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2839 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2840 * bug fix: bogus undefined variable warnings from fopcompiled references to
2841 global variables. (thanks to Lars Rune Nøstdal)
2842 * bug fix: foreign function names should now appear in backtraces on
2843 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2844 * bug fix: SETF compiler macro documentation strings are not discarded
2846 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2847 (thanks to Alex Plotnick)
2848 * bug fix: SLEEP accepts large integer arguments, truncating them to
2849 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2850 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2851 * bug fix: compiler notes for expensive slot type checks could be emitted
2852 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2854 changes in sbcl-1.0.29 relative to 1.0.28:
2855 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2856 https://bugs.launchpad.net/sbcl
2857 Bugs can be reported directly there, or by sending email to
2858 sbcl-bugs@lists.sourceforge.net
2859 (no subscription required.)
2860 * minor incompatible change: under weak type checking policy integer
2861 types are weakened less aggressively.
2862 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2863 allowed to return, which causes SBCL to quit with exit status 0. Previously
2864 if the function returned with a small integer return value, that value
2865 was accidentally reused as the exit status.
2866 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2867 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2868 :HASH-FUNCTION argument. Refer to user manual for details.
2869 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2871 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2872 microseconds since the Unix epoch on all platforms.
2873 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2874 allows the compiler to safely elide boundedness checks for special
2876 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2877 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2878 efficiency measure for threaded platforms, but also valueable in
2880 * new feature: UNC pathnames are now understood by the system on Windows.
2881 * optimization: the compiler uses a specialized version of FILL when the
2882 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2884 * optimization: accesses to potentially non-simple arrays where element type
2885 is known are 50% faster.
2886 * optimization: compiler now generates faster array typechecking code.
2887 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2889 * optimization: multidimensional array accesses in the absence of type
2890 information regarding array rank are approximately 10% faster due to
2891 open coding of ARRAY-RANK.
2892 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2893 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2895 * optimization: result of call to VECTOR can now be stack allocated.
2896 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2897 as long as the resulting array is one-dimensional and has a known
2898 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2899 length of the list matches the known length of the vector does not
2900 allocate the list as an intermediate step. Ditto for VECTOR and simple
2902 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2903 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2904 known element type, and is known to be simple and one dimensional.
2905 * improvement: SBCL now emits a compiler note where stack allocation was
2906 requested but could not be provided (not in all cases, unfortunately)
2907 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2908 * improvement: pretty-printing loop has been implemented properly. (thanks
2909 to Tobias Rittweiler)
2910 * documentation: CLOS slot typechecing policy has been documented.
2911 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2912 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2913 pointer, leading to memory faults. (thanks to Bart Botta)
2914 * bug fix: better floating point exception handling on x86/OpenBSD.
2915 (thanks to Josh Elsasser)
2916 * bug fix: exit status from QUIT when called under --script was lost
2917 (reported by Hubert Kauker)
2918 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2919 same implementation of FILL to initialize the array, even if a more
2920 efficient one was available (reported by Stas Boukarev, thanks to
2922 * bug fix: potential miscompilation of array stack allocation on x86 and
2923 x86-64. (reported by Time Tossavainen)
2924 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2925 result in their subforms being treated as top level forms. (reported by
2927 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2928 than a machine register could leave garbage in the high bits of the
2929 result register (bug 316325).
2930 * bug fix: disable address space randomization Linux/x86-64 as well,
2931 not just x86-64. (reported by Ken Olum)
2932 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2933 generate incorrect code.
2934 * bug fix: #201; type inference for CONS and ARRAY types could derive
2935 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2936 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2937 could not be assigned to or bound with PROGV. (reported by Lorenz
2939 * bug fix: the value of CL:- in the inspector was the previous expression
2940 evaluated rather than the expression being evaluated.
2941 * bug fix: constants can no longer be locally declared special.
2942 * bug fix: signals delivered to threads started from foreign land (read:
2943 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2944 thread by blocking all signals and resignalling.
2945 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2946 from :INITFORM, if any.
2948 changes in sbcl-1.0.28 relative to 1.0.27:
2949 * a number of bugs in cross-compilation have been fixed, with the ultimate
2950 result that building under (at least) clisp should be much more reliable.
2951 * minor incompatible changes: echo-streams now propagate unread-char to the
2952 underlying input stream, and no longer permit unreading more than one
2954 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2955 frames, allowing for instance more reliable backtraces.
2956 * improvement: the debugger REPL can now reference lexical variables
2957 by name directly for code compiled with (DEBUG 3).
2958 * improvement: errors from malformed declarations now have better source
2959 paths associated with them. (thanks to Tobias Rittweiler)
2960 * optimization: faster local calls on x86/x86-64
2961 * bug fix: some error messages for out-of-bound array indexes confused the
2962 index and the bound. (thanks to Stas Boukarev)
2963 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2965 * bug fix: running regressions tests in shells without OSTYPE set now works.
2966 (reported by Harald Hanche-Olsen)
2967 * bug fix: more robust static space exhaustion signalling from
2968 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2969 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2970 docstring away instead of storing it under names such as (LAMBDA (X)).
2971 (reported by Leslie Polzer)
2972 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2973 (thanks to Ole Arndt for the patch)
2974 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2975 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2976 potentially-invalid effective methods in its cache.
2977 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2978 instances as well (thanks to Paul Khuong)
2979 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2980 SB-POSIX:WAITPID and their C equivalents.
2981 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2983 changes in sbcl-1.0.27 relative to 1.0.26:
2984 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2985 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2986 * improvement: the system either recovers from stack exhaustion or dies
2987 properly as opposed to leaving the user uncertain of whether the handler
2988 trampled on some random memory next to the stack or having to rely on
2989 --lose-on-corruption (which is still a good idea to use in production
2990 because stack exhaustion can happen in signal handlers which will likely
2992 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2993 1.0.25.37, reported by Harald Hanche-Olsen)
2994 * bug fix: work around signal delivery bug in darwin (regression from
2995 1.0.25.44, reported by Sidney Markowitz)
2996 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2998 changes in sbcl-1.0.26 relative to 1.0.25:
2999 * incompatible change: an interruption (be it a function passed to
3000 INTERRUPT-THREAD or a timer function) runs in an environment where
3001 interrupts can be enabled. The interruption can use
3002 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
3003 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
3004 potentially running out of stack. Keep in mind that in the absence
3005 of WITHOUT-INTERRUPTS some potentially blocking operation such as
3006 acquiring a lock can enable interrupts.
3007 * incompatible change: GC-OFF and GC-ON are removed, as they were
3008 always unsafe. Use WITHOUT-GCING instead.
3009 * new feature: runtime option --disable-ldb
3010 * new feature: runtime option --lose-on-corruption to die at the
3011 slightest hint of possibly non-recoverable errors: running out of
3012 memory, stack, alien stack, binding stack, encountering a memory
3013 fault, etc. In the absence of --lose-on-corruption a warning is
3015 * enhancement: detect binding stack exhaustion
3016 * enhancement: detect alien stack exhaustion on x86/x86-64
3017 * improvement: generally more stable and reliable interrupt handling
3018 * improvement: there is a per thread interruption queue,
3019 interruptions are executed in order of arrival
3020 * improvement: a repeating timer reschedules itself when the it has
3021 finished, but expiration times are spaced equally. If an
3022 expiration time is in the past it will trigger after a short grace
3023 period that may give a chance to other things to run.
3024 * optimization: slightly faster gc on multithreaded builds
3025 * optimization: faster WITHOUT-GCING
3026 * bug fix: when JOIN-THREAD signals an error, do it when not holding
3027 important locks so that the debugger/handler doesn't produce
3028 recursive errors or deadlock.
3029 * bug fix: real-time signals are not used anymore, so no more
3030 hanging when the system wide real-time signal queue gets full.
3031 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
3033 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
3034 * bug fix: fix random memory faults related to interrupts on alpha
3035 * bug fix: fix random memory faults related to interrupts on sparc
3036 * bug fix: fix deadlocks related to starting threads
3037 * bug fix: fix deadlines on locks on futex platforms
3038 * bug fix: restore errno in signal handlers
3039 * bug fix: fix deadlocks related to hash tables
3040 * bug fix: fix deadlocks in pcl
3042 changes in sbcl-1.0.25 relative to 1.0.24:
3043 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
3044 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
3045 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
3046 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
3047 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
3048 better name and does not return values so stale on multiprocessor systems.
3049 Also, HOLDING-MUTEX-P was added for about the only sane usage of
3051 * improvement: unithread builds keep track of MUTEX-VALUE.
3052 * improvement: reading from a TWO-WAY-STREAM does not touch the output
3053 stream anymore making it thread safe to have a concurrent reader and
3054 a writer, for instance, in a pipe.
3055 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
3056 arguments, making compiler-macros for SETF-functions able to inspect
3057 their constant arguments.
3058 * improvement: COMPILE-FILE reports times with millisecond accuracy
3059 (thanks to Luis Oliveira)
3060 * optimization: CHAR-CODE type derivation has been improved, making
3061 TYPEP elimination on subtypes of CHARACTER work better. (reported
3062 by Tobias Rittweiler, patch by Paul Khuong)
3063 * bug fix: setting alien structure fields of type struct by value now
3064 computes the right offset for the memory copy.
3065 * bug fix: compilation problem involving inlined calls to aliens with
3066 result type VOID. (reported by Ken Olum)
3067 * bug fix: #235a; sequential inline expasion in different policies no
3068 longer reuses the functional from the previous expansion site.
3069 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
3070 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
3071 * bug fix: named ENUMs in multiply-referenced alien record types no longer
3072 cause an implied type redefinition. Regression from 1.0.21.29.
3073 * bug fix: sign-extension of small signed return values now works with C
3074 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
3075 * improvements to the Windows port:
3076 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
3077 Westfold, thanks to Rudi Schlatte)
3079 changes in sbcl-1.0.24 relative to 1.0.23:
3080 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
3081 vector of a multidimensional SIMPLE-ARRAY.
3082 * new feature: the system now signals a continuable error if standard
3083 readtable modification is attempted. (thanks to Tobias Rittweiler)
3084 * new feature: DIRECTORY has been extended with a non-standard keyword
3085 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
3086 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
3087 has been robustified and documented better. (thanks to Robert Goldman)
3088 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
3089 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
3090 * tradeoff: constant FORMAT control strings are now compiled unless
3091 SPACE > SPEED (previously only when SPEED > SPACE.)
3092 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
3094 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
3096 * bug fix: lexical type declarations are now correctly reported by
3097 SB-CLTL2. (reported by Larry D'Anna)
3098 * bug fix: STRING-TO-OCTETS did not handle :START properly when
3099 using UTF-8 as external format. (thanks to Luis Oliveira)
3100 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
3101 are signalled correctly. (thanks to Stas Boukarev)
3102 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
3103 designator. (thanks to Tobias Rittweiler)
3104 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
3105 designator, and returns T instead of the function. (thanks to
3107 * bug fix: direct superclasses of STANDARD-CLASS and
3108 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
3109 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
3110 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
3111 when no class with the named slot yet exists no longer causes a
3112 compile-time style-warning.
3113 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
3114 in safe code. (reported by Didier Verna)
3115 * bug fix: #430; nested structure constructors can stack allocate.
3116 * bug fix: on some 64-bit platforms dynamic space size was truncated
3117 to #xffff0000 bytes. (reported by Benjamin Lambert)
3118 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
3119 REPL unusable. (reported by Daniel Herring)
3120 * bug fix: return values of READ-SEQUENCE did not take :START into
3121 account on file streams, regressions since 1.0.12.22. (reported by
3122 Thomas Russ, patch by Paul Khuong)
3123 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
3124 method specializer used to confuse permuation vector optimization.
3125 * bug fix: system inserted bogus implicit type declarations for local
3126 special variables in DEFMETHOD bodies.
3127 * bug fix: #354; duplicated frames in backtraces due to
3128 non-tail-call-optimized XEPs to functions with return type NIL
3130 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
3131 initializes structure object slots according to DEFSTRUCT initforms,
3132 and DEFSTRUCT forms :INCLUDEind structure classes defined using
3133 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
3134 (reported by Bruno Haible and Stephen Wilson)
3135 * bug fix: #395; fill-pointer output streams used now support
3136 element-type BASE-CHAR as well.
3137 * bug fix: compiler error when attempting to derive return value of
3138 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
3140 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
3142 * bug fix: Mac OS X binaries should now be portable between Leopard
3145 changes in sbcl-1.0.23 relative to 1.0.22:
3146 * enhancement: when disassembling method functions, disassembly
3147 for the associated fast function is also produced.
3148 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
3150 * optimization: printing with *PRINT-PRETTY* true is now more
3151 efficient as long as the object being printed doesn't require
3152 special handling by the pretty printer.
3153 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
3154 now interact correctly with type declarations.
3155 * partial bug fix: PCL detects infinite recursion during wrapper
3156 validation. (thanks to Attila Lendvai)
3157 * bug fix: #426; nested function calls are inlined properly.
3158 Previously if FOO was an inline function, in calls of the form
3159 (FOO (FOO ...)) the outer call was not inlined.
3160 * bug fix: long long arguments passed in registers to alien
3161 functions on PowerPC Linux and NetBSD are now handled correctly
3162 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
3164 changes in sbcl-1.0.22 relative to 1.0.21:
3165 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
3166 for the shared object in the current directory, but passes the native
3167 namestring of the designated pathname to the operation system's shared
3168 object loading function as-it.
3169 * minor incompatible change: --disable-debugger toplevel option now takes
3170 effect before processing of initialization files and --eval or --load
3172 * new feature: new commandline argument: --script, which supports
3173 shebang lines. See documentation for details. (based on work by
3175 * new feature: SAVE-LISP-AND-DIE can save current values of
3176 --dynamic-space-size and --control-stack-size in the executable core,
3177 causing it to skip normal runtime option processing. See documentation
3178 for details. (thanks to Zach Beane)
3179 * enhancement: inoccous calls to EVAL or generic functions dispatching
3180 on subclasses of eg. STREAM no longer cause compiler notes to appear.
3181 * enhancement: the system no longer resignals errors from --load and
3182 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
3183 associated with the original error to be lost. (thanks to Ariel
3185 * enhancement: :DONT-SAVE keyword argument has been added to
3186 LOAD-SHARED-OBJECT for controlling interaction with
3187 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
3188 the effects of an earlier LOAD-SHARED-OBJECT call.
3189 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
3190 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
3191 provided. (reported by Cedric St-Jean)
3192 * bug fix: circularity handling in the reader did not treat raw
3193 structure slots correctly. (reported by Cedric St-Jean)
3194 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
3195 file descriptors when there were none.
3196 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
3197 was broken. (reporteed by Willem Broekema)
3198 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
3199 pathnames without a directory.
3200 * bug fix: COMPILE-FILE did not warn about undefined variable
3201 references at toplevel, and LOAD of the resulting fasl did
3202 not signal an error.
3203 * bug fix: functions with non-required arguments used to end up with
3204 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
3205 * bug fix: redefining a function with non-required arguments didn't
3206 update the system's knowledge about its call signature properly.
3207 * bug fix: fixed #431; incompatible alien record type redefinitions
3208 are detected and handled. (reported by Neil Haven)
3209 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
3210 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
3212 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
3213 after alien stack frames.
3214 * bug fix: strings passed to mk{s,d}temp lacked null termination
3216 changes in sbcl-1.0.21 relative to 1.0.20:
3217 * new feature: the compiler is able to track the effective type of a
3218 generic function across method addition and removal.
3219 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
3220 appropriately typed structure slots without locking.
3221 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
3222 information like those gathered by TIME using a programming-friendly
3224 * new feature: TIME reports time taken even if the form performs a
3225 non-local transfer of control.
3226 * enhancement: reduced conservativism on GENCGC platforms: on
3227 average 45% less pages pinned (measured from SBCL self build).
3228 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
3229 mutate constant symbols or violate declaimed type of the symbol.
3230 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
3231 sleeping on the semaphore in heavily contested semaphores.
3232 * bug fix: semaphores and condition variables were not interrupt
3234 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
3235 owned by other threads anymore.
3236 * bug fix: FIND on lists called KEY outside the specified
3237 subsequence. (reported by budden)
3238 * bug fix: LOG doesn't use single-float intermediate results when
3239 given mixed integer and double-float arguments, leading to better
3240 precision. (reported by Bob Felts)
3241 * bug fix: LOG with base zero returned values of inconsistent type.
3243 changes in sbcl-1.0.20 relative to 1.0.19:
3244 * minor incompatible change: OPTIMIZE qualities
3245 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
3246 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
3247 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
3248 * documentation: some slot access efficiency guidelines have been
3249 added to the user manual.
3250 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
3251 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
3252 as ASSOC and MEMEBER.
3253 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
3254 to more efficient EQ-comparison versions more often.
3255 * optimization: enhanced derivation of DOLIST iteration variable type
3257 * optimization: constant folding of simple (LIST ...) forms as DOLIST
3259 * optimization: runtime lookup of function definitions can be
3260 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
3261 * optimization: compiler is able to derive the return type of
3262 (AREF (THE STRING X) Y) as being CHARACTER.
3263 * optimization: CLRHASH on empty hash-tables no longer does pointless
3264 work. (thanks to Alec Berryman)
3265 * optimization: REPLACE deftransforms don't punt when :START1 or
3267 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
3268 no longer emits a code deletion note. (reported by Andrew
3270 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
3271 functions with an odd number of &OPTIONAL arguments, a &REST
3272 argument, and one or more &KEY arguments at the call site.
3273 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
3274 arguments appeared at call sites as well.
3275 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
3276 READ-LINE &co can no longer read from them afterwards. (reported
3278 * bug fix: fixed #427: unused local aliens no longer cause compiler
3279 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
3281 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
3282 alien-stack leakage. (reported by Andy Hefner)
3283 * bug fix: PROGV signals an error when an attempt to violate declared
3284 type of a variable or bind a constant is made.
3285 * bug fix: SET signals an error when an attempt to violate declared
3286 type of a variable is made.
3287 * bug fix: restart computation during the execution of a restart
3288 test function no longer causes infinite recursion. (reported by
3290 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
3291 signals an error. (thanks to Pierre Mai)
3292 * bug fix: EXPORT left symbol unexported in conflict situations.
3293 (thanks to Michael Weber)
3294 * bug fix: correctly handle name conflicts involving CL:NIL.
3295 (thanks to Michael Weber)
3296 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
3297 conflicts arising from USEing package with conflicting symbols
3298 correctly. (thanks to Michael Weber)
3300 changes in sbcl-1.0.19 relative to 1.0.18:
3301 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
3302 warnings that go otherwise unhandled will be muffled if they are
3303 of the type that's the value of this variable.
3304 * optimization: stack allocation is slightly more efficient on x86
3306 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
3307 where a raw slot always is initialized using the initform whose
3308 type is not know sufficiently well a compile-time are now compiled
3309 correctly. (reported by John Morrison)
3310 * bug fix: compiler no longer makes erronous assumptions in the
3311 presence of non-foldable SATISFIES types.
3312 * bug fix: stack analysis missed cleanups of dynamic-extent
3313 arguments in non-let-converted calls to local functions.
3314 * improvements to the Windows port:
3315 ** adjusted address spaces for building on both Win32 and
3316 Win64. (thanks for John Connors)
3317 * fixed some bugs revealed by Paul Dietz' test suite:
3318 ** interval arithmetic during type derivation used inexact integer
3319 to single-float coercions.
3320 ** arithmetic operations involving large integers and single
3321 floats give the same results in compiled and interpreted code.
3322 ** deriving the result type of COERCE no longer signals an error
3323 if the derived type of the second argument is a MEMBER type
3324 containing invalid type specifiers.
3325 ** ADJOIN with constant NIL as second argument works correctly.
3326 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
3328 changes in sbcl-1.0.18 relative to 1.0.17:
3329 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
3330 profiles only the current thread.
3331 * minor incompatible change: changes to SYMBOL-VALUE of constants
3332 defined with DEFCONSTANT now signal an error.
3333 * enhancement: SB-SPROF now has support for wallclock profiling,
3334 and is also able to profile specific threads. REPORT output
3335 has also additional sorting options.
3336 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
3338 * optimization: structure allocation has been improved
3339 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
3340 ** out of line constructors are ~10% faster.
3341 ** inline constructors are ~15% faster.
3342 ** inline constructors are capable of dynamic extent allocation
3343 (generally on x86 and x86-64, in some cases on other platforms
3345 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
3347 * optimization: file compiler is now able to coalesce non-circular
3348 lists, non-base strings, and bit-vectors. Additionally, constants
3349 are never referenced through SYMBOL-VALUE at runtime.
3350 * optimization: code defining methods on PRINT-OBJECT (and other
3351 generic functions in the COMMON-LISP package) now loads faster.
3352 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
3354 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
3355 fasl is now deleted. (reported by Attila Lendvai)
3356 * bug fix: READ-LINE always returned NIL for the last line in files.
3357 (reported by Yoshinori Tahara)
3358 * bug fix: more accurate disassembly annotations of foreign function
3359 calls. (thanks to Andy Hefner)
3360 * bug fix: trimming non-simple strings and non-string string
3361 designators when the there is nothing to trim works properly.
3362 (thanks to James Knight)
3363 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
3364 (thanks to Travis Cross)
3365 * fixed some bugs revealed by Paul Dietz' test suite:
3366 ** NIL is a valid function name (regression at 1.0.13.38)
3367 ** FILL on lists was missing its return value (regression at 1.0.12.27)
3368 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3369 fill pointers properly (regression at 1.0.12.23)
3370 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3371 displacement indices properly (regression at 1.0.12.23)
3373 changes in sbcl-1.0.17 relative to 1.0.16:
3374 * temporary regression: user code can no longer allocate closure
3375 variable storage on stack, due to bug 419 without explicitly
3376 requesting it. Please consult sbcl-devel for advice if you need to
3377 use this feature in the meanwhile.
3378 * new feature: runtime argument --control-stack-size can be used to
3379 adjust thread default control stack size.
3380 * enhancement: improved TIME output
3381 ** all times are reported using the measured accuracy (milliseconds
3382 for real and GC times, microseconds for everything else.)
3383 ** processor cycle counts on x86 and x86-64.
3384 ** interpreted forms are counted for both evaluator modes.
3385 ** number of lambdas converted by the compiler is reported.
3386 ** CPU percentage report (computed from real and total run time.)
3387 ** more comprehensive run time reporting, using a condenced format
3388 ** interperted form, lambda, and page fault counts are omitted
3390 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
3392 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
3393 * optimization: two argument forms of LAST are upto ~10% faster
3394 in normal SPEED policies.
3395 * optimization: NCONC no longer needs to heap cons its &REST list
3396 in normal SPEED policies.
3397 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
3398 to Sidney Markowitz)
3399 * bug fix: UNION and NUNION work with :TEST-NOT once more,
3400 regression since 1.0.9.1. (thanks to Eric Marsden)
3401 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
3402 since 1.0.15.36. (thanks to Paul Khuong)
3403 * bug fix: LAST when always returned the whole list when given a bignum
3404 as the second argument.
3405 * bug fix: dynamic extent allocation of nested lists and vectors
3406 could leak to otherwise accessible parts.
3407 * bug fix: invalid optimization of heap-allocated alien variable
3409 * bug fix: fasl header checking is less vulnerable to different
3410 platform word lengths.
3411 * bug fix: more correct assembler syntax for GNU binutils
3412 2.18.50.0.4 support. (thanks to Marijn Schouten)
3413 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
3415 * bug fix: the fopcompiler can handle LOCALLY forms (with no
3416 declarations) successfully. (reported by Attila Lendvai)
3418 changes in sbcl-1.0.16 relative to 1.0.15:
3419 * minor incompatible change: revert the changes to sb-posix's error
3420 signaling added in 1.0.14.
3421 * minor incompatible change: change PROBE-FILE back to returning
3422 NIL whenever we can't get a truename, as was the case before 1.0.14.
3423 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
3424 inherits from ERROR instead of just CONDITION.
3425 * new feature: SB-INTROSPECT can provide source locations for instances
3426 as well. (thanks to Tobias Rittweiler)
3427 * optimization: binding special variables now generates smaller code
3428 on threaded platforms.
3429 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
3430 and cases where no :TEST is given but the compiler can infer that
3431 the element to search is of type (OR FIXNUM (NOT NUMBER)).
3432 * optimization: better LOGNOT on fixnums.
3433 * optimization: modular arithmetic for a particular requested width
3434 is implemented using a tagged representation unless a better
3435 representation is available.
3436 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
3437 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
3438 for wellformedness and returns a specialized vector. (reported by
3439 Francois-Rene Rideau)
3440 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
3441 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
3442 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
3443 unscheduling timer at the same time as another timer fires.
3444 * bug fix: don't reschedule timers for dead threads.
3445 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
3446 * bug fix: copying output from RUN-PROGRAM to a stream signalled
3447 bogus errors if select() was interrupted.
3448 * enhancement: add support for fcntl's struct flock to SB-POSIX.
3450 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
3451 * enhancement: cleaner backtraces for interactive interrupts, as
3452 well as other cases where the interesting frames used to be
3453 obscured by interrupt handling frames.
3454 * enhancement: untracing a whole package using (UNTRACE "FOO") is
3455 now supported, and tracing a whole package using (TRACE "FOO") now
3456 traces SETF-functions as well.
3457 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
3458 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
3459 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
3460 * unreadably printed representation of hash-tables now includes
3462 * bug fix: partially fixed #188: type propagation from assignments
3463 is now more efficient.
3464 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
3465 'DOUBLE-FLOAT) are not flushable.
3466 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
3467 full address of the object, and none of the tag bits.
3468 * bug fix: readably printing hash-tables now respects other printer
3469 control variables. (reported by Cedric St-Jean)
3470 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
3471 keyword with MAKE-HASH-TABLE.
3472 * bug fix: export SB-POSIX:MKSTEMP.
3473 * bug fix: SORT was not interrupt safe.
3474 * bug fix: XREF accounts for the last node of each basic-block as
3476 * bug fix: MAKE-INSTANCE optimizations interacted badly with
3477 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
3478 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
3479 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
3480 create obsolete instances in the case of redefinition or
3481 obsoletion of a superclass. (thanks to Andy Hefner)
3482 * bug fix: Support for the Alpha architecture has been revived; it had
3483 suffered somewhat from lack of maintenance since sbcl-1.0.
3484 * improvements to the Windows port:
3485 ** The system detects the codepage to use at startup, instead of
3486 using the value from the saved core. (thanks to Kei Suzuki)
3488 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
3489 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
3490 (see documentation for details.)
3491 * revived support for OpenBSD (contributed by Josh Elsasser)
3492 * partially fixed bug #108: ROOM no longer suffers from occasional
3493 (AVER (SAP= CURRENT END)) failures.
3494 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
3495 bodies no longer cause a WARNING to be signalled. (reported by
3497 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
3498 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
3499 the bug in TRUNCATE.) (reported by Michael Weber)
3500 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
3501 no samples. (reported by Andy Hefner)
3502 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
3503 no longer appear as (NIL ...) frames in backtraces.
3504 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
3505 is now actually exported from SB-EXT as documented. (reported by
3507 * bug fix: sb-aclrepl now correctly understands how to inspect
3508 single-floats on 64-bit platforms where single-floats are not boxed.
3509 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
3510 yet been finalized. (reported by Levente Meszaros)
3511 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
3512 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
3513 SBCL-specific optimize qualities.
3515 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
3516 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
3517 an executable in the search path, and does so in the child
3518 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
3519 been removed; it can be found in the CVS history, for somebody who
3520 needs that search behavior (see the manual).
3521 * minor incompatible change: compiler policy re. weakening type
3522 checks has changed: now type checks are weakened only if SAFETY < 2
3524 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
3525 unparsing of directory pathnames as files. Analogously,
3526 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
3527 filename to parse into a directory pathname.
3528 * enhancement: implicit generic function creation now signals a
3529 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
3530 users can bind handlers for and muffle around calls to LOAD.
3531 * enhancement: RUN-PROGRAM allows unicode arguments and environments
3532 to be used (using the default stream external format), and allows
3533 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
3534 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
3535 strings and vectors whose element-type or simplicity is not fully
3536 known at compile-time.
3537 * optimization: STRING-TRIM and related functions no longer allocate
3538 a new string when no trimming needs to be performed. These functions
3539 are also faster than before when the input string has been declared
3541 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
3542 * optimization: READ-LINE is significantly faster for files containing
3544 * optimization: non-open coded uses of character comparison operators
3545 (e.g. char=) no longer cons when called with more than one parameter
3546 on platforms supporting dynamic-extent allocation.
3547 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
3548 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
3549 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
3551 * bug fix: some sequence functions elided bounds checking when
3553 * bug fix: too liberal weakening of union-type checks when SPEED >
3555 * bug fix: more bogus fixnum declarations in ROOM implementation
3558 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
3559 * new feature: MAKE-HASH-TABLE now experimentally accepts a
3560 :SYNCHRONIZED argument, which makes the hash-table safe for
3561 concurrent accesses (but not iteration.) See also:
3562 SB-EXT:WITH-LOCKED-HASH-TABLE, and
3563 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
3564 * optimization: CONCATENATE on strings is an order of magnitude faster
3565 in code compiled with (> SPEED SPACE).
3566 * optimization: SUBSEQ is ~50% faster on lists.
3567 * bug fix: bug 417 fixed -- source location reporting is now more robust.
3568 * bug fix: SUBSEQ on a list will now correctly signal an error if if
3569 END is smaller then START.
3570 * bug fix: SB-PROFILE will no longer report extra consing for nested
3571 calls to profiled functions.
3572 * bug fix: ROOM implementation had bogus fixnum declarations which
3573 could cause type-errors when calling ROOM on large images.
3574 * bug fix: if file compilation is aborted, the partial fasl is now
3575 deleted, and COMPILE-FILE returns NIL as the primary value.
3576 * bug fix: number of thread safety issues relating to SBCL's internal
3577 hash-table usage have been fixed.
3578 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
3579 be returned from its body when the values were being returned
3580 using unknown-values return convection and the W-P-O was wrapped
3581 inside an UNWIND-PROTECT.
3582 * bug fix: sb-posix should now compile again under Windows, enabling
3583 slime to work again.
3585 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
3586 * incompatible change: hash-table accessor functions are no longer
3587 automatically protected by locks. Concurrent accesses on the same hash-table
3588 from multiple threads can give inconsistent results or even corrupt the
3589 hash-table completely. Multi-threaded applications should do their own
3590 locking at the correct granularity. In the current implementation it is
3591 still safe to have multiple readers access the same table, but it's not
3592 guaranteed that this property will be maintained in future releases.
3593 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
3594 and will signal an error at runtime.
3595 * enhancement: SB-THREAD package now exports a semaphore interface.
3596 * enhancement: CONS can now stack-allocate on x86 and
3597 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
3599 * enhancement: nested lists can now be stack allocated on
3600 platforms providing stack allocation support.
3601 * enhancement: dynamic-extent support has been extended to support
3602 cases where there are multiple possible sources for the stack
3604 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
3605 if the mutex is uncontested on Linux.
3606 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
3607 as specified by the CLHS. (thanks to Tobias Rittweiler)
3608 * bug fix: NaN comparison now works on x86-64.
3609 * bug fix: CLOSE :ABORT T on a stream with pending output now
3611 * bug fix: instances of non-standard metaclasses using standard
3612 instance structure protocol sometimes missed the slot type checks
3614 * bug fix: known functions can be inlined in high-debug code.
3616 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
3617 * minor incompatible change: the MSI installer on Windows no longer
3618 associates .lisp and .fasl files with the installed SBCL.
3619 * minor incompatible change: :UNIX is no longer present in *FEATURES*
3620 on Windows. (thanks to Luis Oliviera)
3621 * new feature: SB-CLTL2 contrib module now implements
3622 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
3623 * optimization: scavenging weak pointers is now more efficient,
3624 requiring O(1) instead of O(N) per weak pointer to identify
3625 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
3626 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
3627 method bodies using constant slot-names when the first argument is
3628 a specializer parameter for the method.
3629 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
3630 names, when the class of the instance is a direct instance
3631 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
3632 as slow as the constant slot-name case.)
3633 * optimization: member type construction is now O(N) instead
3635 * optimization: UNION and NUNION are now O(N+M) for large
3636 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
3638 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
3639 now more readable in environments like Slime which display it.
3640 (thanks to Tobias C. Rittweiler)
3641 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
3642 was able to infer the correct argument type for the object on which
3643 the CAS operation was being performed.
3644 * bug fix: copy propagation interfered with parallel assignment
3645 semantics in local calls. (reported by Paul Khuong)
3646 * bug fix: the signed modular fixnum shift compiled to wrong code on
3647 x86 and x86-64. (spotted by a slight modification to some of
3650 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
3651 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
3652 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
3653 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
3655 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
3656 and generic function now print the object identity for anonymous
3657 instances. (thanks to Attila Lendvai)
3658 * enhancement: as an extension to MOP, SBCL now supports SETF of
3659 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
3660 (thanks to Attila Lendvai)
3661 * enhancement: sb-cover has an alternate annotation mode which puts
3662 the form annotations at the car of the form, instead of annotating
3663 it completely. The benefit of this mode is that it shows better
3664 which forms were instrumented by the compiler.
3665 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
3666 by printer control variables. (reported by Dan Corkill)
3667 * bug fix: system leaked memory when delayed output was performed by
3668 the OS in smaller chunks then expected. (thanks to David Smith)
3669 * bug fix: system leaked memory when file streams were not closed
3671 * bug fix: large objects written to slow streams that were modified
3672 after the write could end up with the modified state written to
3673 the underlying file descriptor.
3674 * bug fix: multiple threads operating in parallel on the same stream
3675 could cause buffer-overflows.
3676 * bug fix: source location information is stored correctly
3677 (broken since 1.0.6). This bug would generally show up as the
3678 Slime debugger highlighting the wrong form when the sldb-show-source
3680 * bug fix: Branch forms are again annotated as branches in the sb-cover
3682 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
3683 on x86-64. (reported by Gregory Vanuxem)
3684 * bug fix: EQUALP could return wrong results for structures with raw
3685 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
3686 word). (reported by Vjacheslav Fyodorov)
3687 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
3690 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
3691 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
3692 atomic compare-and-swap operations on threaded platforms.
3693 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
3694 allows assigning a global minimum value to optimization qualities
3695 (overriding proclamations and declarations).
3696 * enhancement: closed over variables can be stack-allocated on x86
3698 * performance bug fix: GETHASH and (SETF GETHASH) are once again
3700 * optimization: slot definition lookup is now O(1). This speeds up
3701 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
3702 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
3703 * optimization: ASSOC and MEMBER can now be open-coded for all
3704 combinations of keyword arguments when second argument is constant
3705 and SPEED >= SPACE. In other cases a specialized version is
3707 * bug fix: using obsoleted structure instances with TYPEP and
3708 generic functions now signals a sensible error.
3709 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
3710 (reported by Kristoffer Kvello)
3711 * bug fix: backtrace construction is now more careful when making
3712 lisp-objects from pointers on the stack, to avoid creating bogus
3713 objects that can be seen by the GC.
3714 * bug fix: defaulting of values in contexts expecting more than 7
3715 variables now works on x86-64. (reported by Christopher Laux)
3716 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
3718 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
3719 as the property-list of a symbol.
3720 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
3721 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
3722 situations requested, are once again file-compileable. (reported
3725 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
3726 * MOP improvement: support for user-defined subclasses of
3727 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
3728 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
3729 the expansion of DEFMETHOD, is responsible for generating a form
3730 which creates a list of specializers when evaluated. Additional
3731 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
3732 debugging and introspective support.
3733 * minor incompatible change: the (unsupported) spinlock interface
3734 has changed: free spinlock now has the value NIL, and a held spinlock
3735 has the owning thread as its value.
3736 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
3737 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
3739 * enhancement: name of a socket-stream is now "a socket" instead of
3740 "a constant string".
3741 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
3742 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
3743 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
3744 for generic functions. (Thanks to Tobias C. Rittweiler)
3745 * optimization: bignum printing speed has been improved by 20-40%
3746 (depending on the bignum size.)
3747 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
3749 * bug fix: the cache used by the CLOS to store precomputed effective
3750 methods, slot offsets, and constant return values is now thread and
3752 * bug fix: generic function dispatch function updating is now thread
3753 and interrupt safe (in the sense that the known issues have been
3755 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
3756 * bug fix: interning EQL-specializers is now thread and interrupt safe.
3757 * bug fix: asdf systems with dependencies to the SB-POSIX or
3758 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
3759 * bug fix: interrupt safety of applicable method computation has been
3762 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
3763 * new contrib: sb-cover, an experimental code coverage tool, is included
3764 as a contrib module.
3765 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
3766 significantly faster.
3767 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3768 produce more efficient code on x86-64 if the compiler can determine
3769 that (+ INDEX <constant>) does not require a bounds check and FOO
3770 has an element type at least 8 bits wide.
3771 * enhancement: a new, experimental synchronous timeout facility is
3772 provided. Refer to SB-SYS:WITH-DEADLINE for details.
3773 * enhancement: when a symbol name conflict error arises, the
3774 conflicting symbols are always printed with a package prefix.
3775 (thanks to Kevin Reid)
3776 * enhancement: stepping is now once again supported on the SPARC and
3777 MIPS platforms. (It is also now more likely to work on CheneyGC
3779 * enhancement: sb-sprof can now also track and report accurate call
3781 * bug fixes: the treatment of non-standard subclasses of
3782 SB-MOP:SPECIALIZER is more correct.
3783 * incompatible change: PURIFY no longer copies the data from the
3784 dynamic space into the static and read-only spaces on platforms
3785 that use the generational garbage collector
3786 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
3788 * bug fix: GC race condition occasionally resulting in crashes with
3789 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
3791 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3793 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3794 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3795 * bug fix: an asynchronous interrupt could previously leave the
3796 system running with GC inhibited.
3797 * bug fix: a DECLARE form evaluated at top-level now causes an error
3798 rather than silently (or verbosely) returning NIL.
3799 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3800 result in a error being signalled due to source form lookup errors.
3801 (reported by Peter Graves)
3803 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3804 * incompatible change: removed writer methods for host-ent-name,
3805 host-ent-addresses -- changing the values did not update the DNS
3807 * minor incompatible change: changed experimental JOIN-THREAD interface
3808 * documentation: the manual now lists reader and writer methods
3809 in class slot documentation sections. (thanks to Richard M Kreuter)
3810 * documentation: unwinding from asyncronous events has been
3811 documented as unsafe.
3812 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3813 in multithreaded application code.
3814 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3815 platforms. (thanks to James Anderson for the optimization hint)
3816 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3818 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3819 variants no longer cons.
3820 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3821 their NOT- variants no longer cons.
3822 * optimization: EQUAL hash tables no longer use SXHASH for objects
3823 of all data types, but instead use an EQL hash for types for which
3824 EQUAL is the same as EQL.
3825 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3826 are significantly faster.
3827 * optimization: new STRING-OUTPUT-STREAM implementation is much
3828 faster for large outputs and conses 30% less on average.
3829 * enhancement: XREF information is now collected for references made
3830 to global variables using SYMBOL-VALUE and a constant argument.
3831 * enhancement: SIGINT now causes a specific condition
3832 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3833 * bug fix: FILE-POSITION used to signal an error in some cases where
3834 ANSI requires it to return NIL.
3835 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3836 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3837 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3839 * bug fix: bad type declaration in the CLOS implementation has
3840 been fixed. (reported by James Anderson)
3841 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3842 (thanks to Lutz Euler)
3843 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3844 required by the CLHS. (reported by Samium Gromoff)
3845 * bug fix: dead unbound variable references now signal an error.
3846 (reported by Marco Monteiro)
3847 * bug fix: / with an unused value was being deleted in safe code.
3848 (thanks to Marco Monteiro and Kevin Reid)
3849 * bug fix: number of characters that can be written onto a single
3850 line in a file is unlimited.
3851 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3852 been fixed by inhibiting interrupts for when GC is disabled.
3853 * bug fix: some interrupt safety issues with GETHASH, (SETF
3854 GETHASH), CLRHASH and REMHASH have been fixed.
3855 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3856 specifier no longer causes infinite recursion.
3857 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3858 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3859 * bug fix: an &environment argument with the correct variable information
3860 is passed to macros that are expanded during byte compilation.
3861 (reported by Samium Gromoff)
3862 * bug fix: a logic error was causing the hash function for bignums to
3863 have excessive amounts of collisions. (reported by Faré Rideau)
3864 * bug fix: modifying the contents of an array could change the return
3865 value of SXHASH on that array, which is only allowed for strings
3866 and bit vectors. (bug introduced in 0.9.16)
3867 * improvement: the x86-64/darwin port now passes all tests (except
3868 for the debugger tests) but should still be considered
3869 experimental until this is fixed.
3870 * improvement: a style-warning is signaled for CASE (etc) clauses with
3871 duplicate keys. (thanks to Kevin Reid)
3872 * improvement: macos/x86 and macos/x86-64 now use mach exception
3873 handlers for dealing with illegal instructions (for trapping and
3874 error handling) and memory protection violations (for GC).
3876 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3877 * new platform: experimental support for x86-64/darwin (MacOS).
3878 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3879 and getnameinfo sockets functions are used instead of gethostbyaddr
3880 and gethostbyname, on platforms where the newer functions are available.
3881 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3883 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3884 don't print the startup banner, but behave as if --noinform was passed
3885 as a command line argument. (thanks to Kevin Reid)
3886 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3887 * optimization: code using alien values with undeclared types is much faster.
3888 * optimization: the compiler is now able to open code SEARCH in more cases.
3889 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3890 * bug fix: using standardized COMMON-LISP special variables as loop
3891 variables no longer signals bogus package lock violations. (reported
3893 * bug fix: declaring local loop variables to be of a range-limited type
3894 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3895 (reported by Andras Simon)
3896 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3897 bugs remain on x86-64.)
3898 * bug fix: the #= and ## reader macros now interact reasonably with
3899 funcallable instances.
3900 * bug fix: type-checks for function arguments were compiled using the
3901 compiler policy settings of the wrong lexical environment (in 1.0.2
3903 * bug fix: SHADOW accepts characters as string designators, as required
3904 by the spec (thanks to Eric Marsden)
3905 * bug fix: fixed GC safety issues when foreign functions are called with
3906 non-base strings as arguments
3907 * bug fix: more consistent error output for fatal-compiler-warnings, like
3909 * bug fix: functions with proper names were showing up as NIL in
3910 backtraces (reported by Edi Weitz, regression in 1.0.2)
3912 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3913 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3914 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3915 produce more efficient code on the x86 if the compiler can determine
3916 that (+ INDEX <constant>) does not require a bounds check and FOO
3917 has an element type at least 8 bits wide.
3918 * bug fix: references to undefined variables are handled the same way
3919 in toplevel forms as in the normal compiler
3920 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3922 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3923 (thanks to Jon Buller)
3924 * improvement: faster compilation times for complex functions
3925 * improvement: added readlink support to SB-POSIX (thanks to Richard
3928 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3929 * improvement: experimental support for mach exception handling on
3930 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3932 * improvement: support for GBK external format.
3933 (thanks to Chun Tian (binghe))
3934 * improvement: the debugger now displays variables that have been closed
3935 over, in code compiled with (DEBUG 2) or higher
3936 * improvement: support for executable cores on NetBSD (thanks to
3938 * new feature: added a RESTART-FRAME debugger command
3939 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3940 be used to provide an implementation for FILE-POSITION on Gray streams
3941 (thanks to Eric Marsden)
3942 * new feature: add syslog, openlog and closelog support to SB-POSIX
3943 (thanks to Richard Kreuter)
3944 * optimization: the function call overhead in code compiled with
3945 a high DEBUG optimization setting is significantly
3946 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3947 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3948 (thanks to Tony Martinez)
3949 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3950 evaluated once (reported by Kevin Reid)
3951 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3952 works again (thanks to Kilian Sprotte)
3953 * bug fix: an error is signaled for tagbodies with duplicate tags
3954 (thanks to Stephen Wilson)
3955 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3956 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3957 stack frames from alien callbacks.
3958 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3959 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3960 65k pages (thanks to David Woodhouse)
3961 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3963 changes in sbcl-1.0.1 relative to sbcl-1.0:
3964 * new platform: FreeBSD/x86-64, including support for threading.
3965 * new feature: the compiler stores cross-referencing information
3966 about function calls (who-calls), macroexpansion (who-macroexpands)
3967 and special variables (who-binds, who-sets, who-references) for code
3968 compiled with (< SPACE 3). This information is available through the
3969 sb-introspect contrib.
3970 * new feature: users may subclass SEQUENCE, and have instances of
3971 these classes interoperate with standard Common Lisp functions if
3972 a number of methods are defined. (This feature is experimental
3973 and the interface subject to change based on feedback from SBCL
3974 users and the general community)
3975 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3976 x86/x86-64, rather than the previous fixed depth of 8
3977 * improvement: another pthread back-end of mutex "pthread-futex".
3978 * bug fix: non-ascii command-line arguments are processed correctly
3979 (thanks to Yaroslav Kavenchuk)
3980 * bug fix: non-required arguments were not passed correctly when a method
3981 defined using DEFMETHOD was called from a mop-generated method using
3982 CALL-NEXT-METHOD (reported by Pascal Costanza)
3983 * bug fix: recursion is now permitted in accessors through
3984 SLOT-UNBOUND. (reported by Pascal Costanza)
3985 * bug fix: an error was signaled at startup if the HOME environment
3986 variable was defined, but had an empty value (reported by Peter Van Eynde)
3987 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3988 signal a PROGRAM-ERROR, not a BUG.
3989 * bug fix: SB-POSIX:READDIR works when built with large file support.
3990 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3992 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3993 for better automatic indentation support. (thanks to Matt Pillsbury)
3994 * optimization: loading generic functions no longer takes O(n^2) time,
3995 proportional to the amount of methods in the generic function
3996 (reported by Todd Sabin and Jeremy Brown)
3997 * optimization: the FIND and POSITION family of sequence functions
3998 are significantly faster on arrays whose element types have been
4000 * improvements to the Windows port:
4001 ** Intermittent heap corruption problems have been fixed. (thanks
4002 to Alastair Bridgewater)
4003 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
4005 ** Lisp is able to unwind foreign exception frames from alien
4006 callbacks. (thanks to Alastair Bridgewater)
4008 changes in sbcl-1.0 relative to sbcl-0.9.18:
4009 * improvement: experimental support for threading on FreeBSD/x86.
4010 (thanks to NIIMI Satoshi)
4011 * improvement: runtime option --dynamic-space-size can be used
4012 to set the size of the dynamic space reserved on startup.
4013 * improvement: floating point modes in effect are now saved in
4014 core, and restored on startup.
4015 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
4016 startup, not time since first call to GET-INTERNAL-REAL-TIME.
4017 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
4018 threads are not running after *SAVE-HOOKS* have run.
4019 * improvement: writes to CLOS instance slots are type-checked in code
4020 compiled with (SAFETY 3)
4021 * improvement: floating-point exception handling on FreeBSD (thanks to
4023 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
4024 (thanks to Zach Beane)
4025 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
4027 * improvement: added support for the Shift-JIS external format.
4028 (contributed by NIIMI Satoshi)
4029 * improvement: callbacks are supported on Linux/PPC. (thanks to
4031 * bug fix: compiler bug triggered by a (non-standard) VALUES
4032 declaration in a LET* was fixed. (reported by Kaersten Poeck)
4033 * bug fix: file compiler no longer confuses validated and already
4034 dumped structurres. (reported by Kaersten Poeck)
4035 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
4036 fill-pointer signals a type-error as required. (thanks to
4038 * bug fix: disassemly of funcallable instances works.
4039 * bug fix: single stepping on PPC.
4040 * bug fix: fix thread-safety problems in the type system (generally
4041 manifesting as nonsensical errors like "STRING is a bad type specifier
4042 for sequences" or "The value 1 is not of type FIXNUM")
4043 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
4044 (reported by Josip Gracin)
4045 * bug fix: an error is signaled for attempts to displace arrays with
4046 incompatible element types (thanks to Mario Mommer)
4047 * bug fix: more correct handling of wide characters in debug info
4048 (bug reported by Attila Lendvai and fixed by Juho Snellman)
4049 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
4050 and don't cause extra consing
4051 * optimization: MAP and MAP-INTO are significantly faster on vectors
4052 whose elements types have been declared.
4053 * Improvements to SB-SPROF:
4054 ** Support for allocation profiling
4055 ** Reduced profiling overhead, especially for long profiling runs
4056 * Improvements to the Windows port:
4057 ** floating point exceptions are now reported correctly.
4058 ** stack exhaustion detection works partially.
4059 ** more accurate GET-INTERNAL-REAL-TIME.
4060 ** better RUN-PROGRAM behaviour in case of errors in the child
4062 ** PROBE-FILE now simplifies pathnames correctly.
4063 ** DIRECTORY now works correctly with :WILD-INFERIORS.
4064 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
4065 1st 1970 (although time timezone data will be unreliable).
4066 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
4068 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
4069 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
4070 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
4072 * bug fix: two potential GC deadlocks affecting threaded builds.
4073 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
4074 returns T (reported by Anton Kazennikov)
4075 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
4076 with non-variable places
4077 * bug fix: remove a race condition in the setting of
4078 funcallable-instance functions, this should make threaded CLOS
4079 code more stable against memory faults.
4080 * bug fix: corruption of specials when unbinding is interrupted by an
4081 asynchronous unwind (reported by Hannu Koivisto)
4082 * improvement: the debugger will now also display local variables that
4083 are only used once, for code compiled with a DEBUG optimization quality
4086 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
4087 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
4088 * incompatible change: External-format support for FFI calls. The
4089 SB-ALIEN:C-STRING no longer implies an ASCII
4090 external-format. Instead the string is subject to external-format
4091 conversion. Additionally return values of type SB-ALIEN:C-STRING
4092 are by default of type (SIMPLE-ARRAY CHARACTER), not
4093 SIMPLE-BASE-STRING. For an alien type that behaves like the old
4094 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
4095 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
4096 * incompatible change: SB-EXT package no longer contains the
4097 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
4098 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
4100 * incompatible change: the single-stepper is no longer available
4101 on Alpha, Mips and Sparc platforms.
4102 * minor incompatible change: the direct superclasses of
4103 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
4104 not (STANDARD-OBJECT FUNCTION). This makes the
4105 class-precedence-lists of GENERIC-FUNCTION and
4106 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
4108 * minor incompatible change: the default stream external format on
4109 non-unicode SBCL is no longer detected from the locale, but is always
4111 * new feature: Add a version of evaluator that uses an interpreter instead
4112 of the compiler. EVAL still uses the compiler by default, to switch it
4113 to use the interpreter, set the value of the variable
4114 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
4115 * minor incompatible change: the single-stepper REPL has been merged
4116 with the normal debugger (see the "Stepping" heading of the debugger help
4117 for more details). The debugger command STEP will no longer switch
4118 to the single-stepper REPL.
4119 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
4120 for a type now works.
4121 * bug fix: loading of default sysinit file works. (thanks to Leonid
4123 * bug fix: better detection of circularities in the file-compiler.
4124 (reported by Marco Monteiro)
4125 * bug fix: the CL pathname functions now work with files that have
4126 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
4127 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
4128 systems with Unix98 pty semantics.
4129 * bug fix: ASDF-INSTALL will now work with bsd tar.
4130 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
4132 * bug fix: timers expiring in dead threads no longer cause a
4133 type-error (reported by Paul "Nonny Mouse").
4134 * bug fix: thanks to more lightweight single-stepper instrumentation,
4135 code compiled with (DEBUG 3) will compile and execute significantly faster,
4136 and will have more accurate type-inferencing than before
4137 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
4138 whose bindings are modified
4139 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
4140 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
4141 ** replace dummy implementations of CL:MACHINE-INSTANCE and
4142 CL:SOFTWARE-VERSION with proper version
4144 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
4145 * feature: implemented the READER-METHOD-CLASS and
4146 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
4147 as specified by AMOP.
4148 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
4150 * optimization: faster LOGCOUNT implementation on x86 and x86-64
4151 (thanks to Lutz Euler)
4152 * optimization: hashing of general arrays and vectors has been
4153 improved. (reported by Any Fingerhut)
4154 * enhancement: SB-INTROSPECT is now able to find definitions of
4155 profiled functions. (thanks to Troels Henriksen)
4156 * enhancement: compiler-macro expansion applies now to FUNCALL forms
4157 as well, allowing compiler-macros for SETF-functions to expand.
4158 * enhancement: step-instrumentation no longer wraps known
4159 single-value functions with multiple-value context, allowing
4160 better type inference.
4161 * fixed bug #337: use of MAKE-METHOD in method combination now works
4162 even in the presence of user-defined method classes. (reported by
4163 Bruno Haible and Pascal Costanza)
4164 * fixed bug #339(c): if there are applicable methods not part of any
4165 long-form method-combination group, call INVALID-METHOD-ERROR.
4166 (reported by Bruno Haible)
4167 * fixed bug #361: the :FUNCTION initarg in the protocol for
4168 initialization of methods can now be used to override
4169 internally-produced optimized functions. (reported by Bruno
4171 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
4172 system-provided lambda expression no longer cause warnings about
4173 unbound #:|pv-table| symbols.
4174 * bug fix: improved the handling of type declarations and the
4175 detection of violations for keyword arguments with non-constant
4177 * bug fix: potentially erronous calls to PATHNAME and
4178 MERGE-PATHNAMES were being flushed in some cases.
4179 (reported by Richard Kreuter)
4180 * bug fix: compiled calls to TYPEP were mishandling obsolete
4181 instances. (reported by James Bielman and Attila Lendvai)
4182 * bug fix: format strings with ~> without matching ~< no longer
4183 trigger an AVER, but signal an understandable error instead.
4184 (reported by Antonio Martinez)
4185 * bug fix: specifying an output-file without a pathname-type for
4186 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
4187 of input-file instead of "fasl". (reported by Robert Dodier)
4188 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
4189 (reported by James Y Knight).
4190 * bug fix: compiler-macros-function did not consider the environment
4191 argument for shadowing by local functions.
4192 * bug fix: compiler-macros expansion was inhibited by local INLINE
4194 * bug fix: inline expansions of known functions were subject to
4195 step-instrumentation in high debug policies, leading to problems
4196 with type-inference.
4197 * bug fix: compiler failed to differentiate between different CONS
4198 types in some cases.
4199 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
4200 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
4201 * bug fix: #368: incorrect use of expressed vs. upgraded array
4203 * bug fix: #306a: more precise unions of array types.
4204 * thread-safety improvements:
4205 ** CONDITION-WAIT could return early on Linux, if the thread was
4206 interrupted and subsequently continued with SIGCONT.
4207 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
4209 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
4210 * added support for the ucs-2 external format. (contributed by Ivan
4212 * minor incompatible change: pretty printing of objects of type
4213 (cons symbol) is, in the default pprint-dispatch-table, now
4214 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
4216 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
4217 called later in a class's lifetime, possibly as late as when the
4218 first instance of the class is created. Previously,
4219 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
4220 class became finalizeable.
4221 * fixed bug: FILE-POSITION sometimes returned inconsistent results
4222 for multibyte external-format streams. (thanks to "vbzoli")
4223 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
4224 with :ALLOCATION :CLASS inherited from superclasses of the
4226 * fixed bug: anonymous classes can now be created using the :NAME
4227 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
4228 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
4229 * fixed bug: core-files saved with :EXECUTABLE T can again be
4230 executed when SBCL_HOME isn't set. (reported by James Knight)
4231 * fixed bug: toplevel LOCALLY forms with declarations could
4232 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
4233 * fixed bug: printing from several different threads using different
4234 values of *print-case* could cause invalid output, due to
4235 some internal special variables of the printer not being bound
4236 thread-locally (reported by Max Mikhanosha)
4237 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
4238 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
4239 (reported by Pascal Costanza)
4240 * fixed bug: FINALIZE-INHERITANCE is called from
4241 REINITIALIZE-INSTANCE on classes when the class has previously
4242 been finalized, as required by AMOP.
4243 * minor code generation optimizations:
4244 ** better register allocation in CLOS dispatching functions
4245 ** overflow detection when coercing signed bytes to fixnums on x86-64
4246 ** is now implemented with one IMUL instruction instead of three shifts
4247 ** more efficient bit-vector access on x86 and x86-64
4248 ** more efficient access to raw structure slots on x86 and x86-64
4249 * fixed some bugs revealed by Paul Dietz' test suite:
4250 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
4251 return its argument.
4253 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
4254 * feature: thread support on Solaris/x86, and experimental thread support
4256 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
4258 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
4259 default method for SLOT-UNBOUND.
4260 * minor incompatible change: prevent the user from specializing the
4261 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
4262 somewhat counter to the intent of the protocol, I (CSR) think, and
4263 additionally it just doesn't work in SBCL as currently
4264 implemented, thanks to optimizations (that are always valid for
4265 the other three SLOT-VALUEish functions, but not for the setter).
4266 * minor incompatible change: the :SB-LDB feature is now enabled by
4267 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
4268 the low-level debugger.
4269 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
4270 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
4271 down to an SB-SYS:FD-STREAM, allowing direct communication in
4272 more cases. Temporary files and pipes are still used as a fallback
4274 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
4275 on the non-reentrant C functions localtime(3) and gmtime(3).
4276 * bug fix: global optimization policy was not visible in LOCALLY and
4278 * bug fix: class objects can be used as specializers in methods.
4279 (reported by Pascal Costanza)
4280 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
4281 with a type error. (reported by blitz_ on #lisp)
4282 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
4283 failed with a type error. (reported by Pascal Bourguignon)
4284 * bug fix: merging pathnames against defaults with :DIRECTORY
4285 starting with '(:RELATIVE :BACK) should preserve the :BACK.
4286 (reported by James Y Knight)
4287 * bug fix: saving large (>2GB) cores on x86-64 now works
4288 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
4289 constant index and a (simple-array (signed-byte 32)) array
4290 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
4291 error (patch by Robert J. Macomber)
4292 * feature: TIME now displays the amount of run-time spent in GC
4293 * bug fix: The debugger now does a better job of respecting
4294 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
4295 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
4296 workaround for bug 403.)
4297 * bug fix: floating point exception handling now works on FreeBSD
4298 (thanks to NIIMI Satoshi)
4299 * fixed some bugs revealed by Paul Dietz' test suite:
4300 ** MISC.641: LET-conversion were not supposed to work in late
4302 * improvements to the Win32/x86 port:
4303 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
4304 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
4306 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
4307 * new feature: source path information is generated for macro-expansion
4308 errors for use in IDE's like Slime (thanks to Helmut Eller)
4309 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
4310 * bug fix: compiler does not loop forever on an invalid type in
4312 * improvement: compilation of most CLOS applications is significantly
4314 * optimization: added a limited bytecode compiler for simple toplevel
4315 forms, speeding up compilation and FASL loading
4316 * bug fix: the statistical profiler now properly distinguishes anonymous
4319 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
4320 * minor incompatible change: in sbcl-0.9.11 (but not earlier
4321 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
4322 into subclasses of the finalized class. Now user calls to
4323 FINALIZE-INHERITANCE finalize just the one class, and calls by the
4324 system return before any subclasses are finalized.
4325 * minor incompatible change: The reader no longer ignores errors
4326 regarding non-existent packages in #+ and #- feature tests.
4327 * new feature: command line options --no-sysinit, --no-userinit to
4328 inhibit loading the corresponding init files
4329 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
4330 for sending data through UDP sockets (thanks to François-René Rideau)
4331 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
4332 error is signalled instead (thanks to François-René Rideau)
4333 * minor incompatible change: Error signalling behaviour of lexical
4334 operations violating package locks has changed slightly. Refer to
4335 documentation on package locks for details.
4336 * enhancement: EVAL can process IF-expressions without resorting to the
4338 * bug fix: Some operations involving SIN, COS, or TAN weren't being
4339 constant-folded properly due to missing out-of-line functions.
4340 (reported by Mika Pihlajamäki)
4341 * bug fix: LISTEN sometimes returned T even in cases where no data was
4342 immediately available from the stream
4343 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
4344 were reversed. (reported by Levente Mészáros)
4345 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
4346 when given a vector displaced to an adjustable array. (reported
4348 * bug fix: derivation of float boundaries from numbers outside the
4349 appropriate float range (reported by John Wiseman)
4350 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
4352 * bug fix: precomputing cache entries for generic functions with
4353 some subclasses of specializers as yet invalid does not attempt to
4354 fill a cache line with a negative offset. (reported by Levente
4356 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
4357 allow condition class objects as arguments to DOCUMENTATION and
4358 (SETF DOCUMENTATION); only find and set documentation for
4359 structure names for the STRUCTURE doc-type. (suggested by Gary
4361 * improvements to the Win32/x86 port:
4362 ** (user-homedir-pathname) and default initialization file
4363 locations now know about the user's "Documents and Settings"
4364 directory (thanks to Yaroslav Kavenchuk)
4365 ** run-program is implemented (thanks to Mike Thomas)
4366 ** sockets support (thanks to Timothy Ritchey)
4367 ** better backtrace support (thanks to Alastair Bridgewater)
4368 ** sb-grovel supported
4369 ** asdf-install and sb-posix work somewhat
4370 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
4371 * improvements to the Solaris/x86 port:
4372 ** works on Solaris 11/Solaris Express
4373 ** floating-point exception handling support
4374 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
4375 * fixed some bugs revealed by Paul Dietz' test suite:
4376 ** REMOVE-METHOD returns its generic function argument even when
4377 the method is not one of the generic functions' methods.
4378 ** objects declared as MEMBER types can be admissible arguments to
4379 structure accessors.
4380 ** printing characters should simply be printed by the FORMAT ~:C
4382 ** compiler failure when compiling functions with hairy constant
4383 defaults for optional parameters.
4384 ** compiler produces wrong code when MAYBE-INLINE-expanding a
4385 function, which is already optimized.
4387 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
4388 * new platform: experimental support for SBCL x86/Darwin, including
4389 MacOS X 10.4.5 on Intel.
4390 * new feature: Unicode character names are now known to the system
4391 (through CHAR-NAME and NAME-CHAR).
4392 * new feature: the filesystem location of SBCL's core file is
4393 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
4394 * minor incompatible change: the contrib modules SB-POSIX and
4395 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
4396 this change is to make it easier to distribute
4397 location-independent binaries.
4398 * bug fix: as implied by AMOP, standardized classes no longer have
4399 slots named by external symbols of public packages. (reported by
4401 * optimization: calling functions via constant symbols -- as in
4402 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
4403 via the function object as in (FUNCALL #'FOO).
4404 * optimization: on x86 and x86-64, the calling convention for the
4405 case of dealing with an unknown number of values has been altered
4406 to be friendlier to the prediction heuristics implemented,
4407 particularly with reference to CALL and RET pairing. (thanks to
4408 Alastair Bridgewater)
4409 * optimization: on x86, the code for access to thread-local symbol
4410 values and binding/unbinding of thread-local symbols is smaller.
4411 (thanks to Alastair Bridgewater)
4412 * enhancement: CONSTANTP is now able to determine constantness of
4413 more complex forms, including calls to constant-foldable standardized
4414 functions and some special forms beyond QUOTE.
4415 * fixed bug: occasional GC crashes on Solaris/x86
4416 * optimization: x86-64 supports stack allocation of results of simple
4417 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
4418 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
4419 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
4420 (thanks to James Knight)
4421 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
4422 by the standard (thanks to Stephen Compall)
4424 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
4425 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
4426 be used for bundling the runtime and the core file into one
4427 executable binary. This feature is not currently supported on all SBCL
4428 platforms. (thanks to James Bielman and NIIMI Satoshi)
4429 * new feature: a generational or ephemeral garbage collector is now
4430 the default on the PowerPC platform (both Linux and Darwin). The
4431 old Cheney (stop and copy) collector is a build-time option.
4432 (thanks to Cyrus Harmon, after Raymond Toy)
4433 * minor incompatible change: the method by which SBCL finds its
4434 contributed modules has changed; it no longer relies on symbolic
4435 links from an $SBCL_HOME/systems directory, but searches directly
4436 in the subdirectories of $SBCL_HOME.
4437 * enhancement: the dynamic heap size on the Linux/PPC platform is
4438 markedly larger, even using the older Cheney garbage collector.
4439 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
4440 certain complicated string types. (reported by Gary King)
4441 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
4442 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
4443 * fixed bug: DOCUMENTATION on structures no longer signals an
4444 error if no structure type of the right name exists. (reported by
4446 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
4447 applicable non-standard primary or :AROUND method on
4448 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
4449 no longer cause unbound variable errors. (reported by Kevin Reid)
4450 * fixed bug: metacircle resolution in cases where methods have slots
4451 added before the slots from STANDARD-METHOD. (reported by Jean
4453 * fixed bug: the Power PC assembly code for calling into lisp
4454 sometimes computed its return address wrongly (depending on the
4455 15th bit of the address, fixed at link time). This used to
4456 manifest itself in a segmentation violation while building PCL.
4457 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
4458 many others over the years)
4459 * fixed bug: ROOM no longer reports silly numbers for stack usage if
4460 the stack pointer (treated as a signed integer) is negative.
4461 (thanks to Peter van Eynde)
4463 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
4464 * new platform: experimental support for the Windows operating
4465 system has been added. (thanks to Alastair Bridgewater)
4466 * fixed several bugs in and robustified the PPC FFI (including
4467 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
4468 * bug fix: allow non-simple string symbol names (reported by Paul
4470 * bug fix: interrupt handling on NetBSD (thanks to Richard M
4472 * bug fix: saving a core corrupted callbacks on x86/x86-64
4473 * bug fix: closed a loophole in metacircularity detection and
4474 grounding in the PCL implementation of CLOS.
4475 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
4476 (reported by tomppa on #lisp)
4477 * bug fix: clear the direction flag on Lisp -> C transitions, as
4478 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
4479 (reported by Andrej Grozin and Hendrik Maryns)
4480 * optimization: major improvements to GC efficiency on GENCGC platforms
4481 * optimization: faster implementation of EQUAL
4482 * optimization: emit more efficient opcodes for some common
4483 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
4484 * optimization: several other minor code-generation improvements on x86-64
4485 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
4487 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
4488 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4489 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
4490 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
4491 by ANSI as a generic function, and for consistency (SETF
4492 GENERIC-FUNCTION-NAME) is treated likewise.
4493 * fixed bug #233.b: make constraint propagation notice when a variable
4494 value is changed after it is referenced but before it is used
4495 * fixed bug #296: no more arbitrary behaviour from filenames with
4496 odd characters as --load arguments. (reported by Adam Warner)
4497 * fixed bug #390: :CHARACTER-SET pathname components now work as
4498 expected. (reported by Tim Daly Jr)
4499 * fixed bug #391: complicated :TYPE intersections in slot
4500 definitions no longer cause an error in PCL internals.
4501 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
4502 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
4503 returning the number of octets which would be written to the
4504 file-stream. (thanks to Robert J. Macomber)
4505 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
4506 arguments to the internal stream functions. (thanks to David
4508 * bug fix: stack exhaustion is now handled on the x86/SunOS
4509 platform. (thanks to Daisuke Homma)
4510 * bug fix: more accurate ROOM results on GENCGC platforms
4511 * optimization: improved type inference for arithmetic-for
4512 index variables in LOOP
4513 * optimization: faster floating-point SQRT on x86-64
4514 * fixed some bugs revealed by Paul Dietz' test suite:
4515 ** DOCUMENTATION returns NIL instead of "" for method combinations
4516 that don't have a docstring
4518 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
4519 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4520 GENERIC-FUNCTION-NAME) are no longer generic functions, and
4521 therefore are not customizeable by user code (as seems to be at
4522 least permitted and maybe required by AMOP). As a consolation,
4523 however, the SBCL implementation of these functions now calls
4524 REINITIALIZE-INSTANCE as specified by AMOP.
4525 * bug fix: slot-definition documentation is propagated as per ANSI
4526 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
4527 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
4528 argument, as do eslotd initialization methods. (from Pascal
4529 Costanza's "Closer" project)
4530 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
4531 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
4533 * bug fix: it is now possible to have more than one subclass of
4534 STANDARD-GENERIC-FUNCTION without causing stack overflow.
4535 (reported by Bruno Haible, Pascal Costanza and others)
4536 * bug fix: the dependent update protocol now works for generic
4537 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
4538 and Pascal Costanza)
4539 * bug fix: condition-class instances corresponding to
4540 DEFINE-CONDITION forms are now created eagerly. (reported by
4541 Kalle Olavi Niemitalo on comp.lang.lisp)
4542 * bug fix: floating point printing is more accurate in some
4543 circumstances. (thanks to Simon Alexander)
4544 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
4545 merged with *DEFAULT-PATHNAME-DEFAULTS*.
4546 * bug fix: callbacks on OS X now preserve stack-alignment.
4547 (thanks to Cyrus Harmon)
4548 * enhancement: the x86-64 disassembler is much better at
4549 disassembling SSE instructions. (thanks to Lutz Euler)
4550 * enhancement: CHECK-TYPE on a variable now allows type-inference
4551 (thanks to Vincent Arkesteijn)
4552 * optimization: improved performance of EUC-JP external format.
4553 (thanks to NIIMI Satoshi)
4554 * optimization: performance improvements to IO on file streams of
4555 :ELEMENT-TYPE CHARACTER
4556 * optimization: much faster memory allocation on x86-64
4557 * optimization: faster garbage collections (latency and throughput)
4559 * optimization: faster bignum subtraction and division on x86 and x86-64
4560 (thanks to Lutz Euler)
4561 * optimization: more accurate type-inference for loops that use a
4562 floating point index variable or a negative step.
4564 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
4565 * bug fix: add a workaround to SBCL looping infinitely at startup on
4566 Linux kernels with apparently buggy implementations of personality().
4567 (thanks to Svein Ove Aas)
4568 * bug fix: Unicode symbols are correctly printed in LDB backtraces
4569 (thanks to David Lichteblau)
4570 * bug fix: local bindings shadow global symbol macros for
4571 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
4572 * optimization: non-open coded uses of numeric comparison operators
4573 (e.g. >) no longer cons when called with more than one parameter
4574 on platforms supporting dynamic-extent allocation.
4575 * enhancement: saving cores with foreign code loaded is now supported
4576 on MIPS/Linux in addition to the previously supported platforms.
4577 * bug fix: FIND-RESTART now tests for activity, not applicability when given
4578 a restart object as identifier. (reported by Helmut Eller for CMUCL)
4579 * bug fix: division by zero in sb-sprof when no samples were collected
4580 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
4581 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
4582 (thanks to Alexander Kjeldaas)
4583 * new feature: ignoring the return values of destructive functions
4584 like NREVERSE signals a compile-time style-warning.
4585 (thanks to Kevin Reid)
4586 * new feature: the alignment of alien structure fields can be
4587 explicitly specified. (thanks to Cyrus Harmon)
4588 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
4589 and dump core on SIGQUIT
4591 ** incompatible change: threads do not inherit values of specials
4592 from their parents (see manual)
4593 ** bug fix: threads stacks belonging to dead threads are freed by the
4594 next exiting thread, no need to gc to collect thread stacks anymore
4595 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
4596 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
4597 ** bug fix: dynamic variable and thread start related gc lossage
4598 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
4600 * fixed some bugs revealed by Paul Dietz' test suite:
4601 ** SUBTYPEP is slightly more accurate on heinously complicated
4602 CONS types where some of the members have uncertain (in the
4603 NIL, NIL sense) type relationships to each other.
4605 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
4606 no longer purified unless :PURIFY T is explicitly specified.
4607 ** Non-purified cores are significantly smaller than before
4609 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
4610 * new feature: timers based on Zach Beane's excellent timer package
4611 * added support for the following external formats: koi8-u,
4612 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
4613 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
4614 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
4615 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
4616 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
4617 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
4618 * incompatible change: a threaded SBCL will no longer revert to
4619 non-threaded mode on non-NPTL systems, but refuse to start entirely.
4620 * bug fix: interrupts are disabled until startup is complete; no
4621 more sigsegvs when receiving a signal to soon
4622 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
4624 * bug fix: add a workaround for the memory randomization features in
4625 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
4626 workaround will only be in effect on systems with the proc filesystem
4628 * bug fix: printing objects of type HASH-TABLE signals a
4629 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
4631 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
4632 have been running for over 50 days. (reported by Gilbert Baumann)
4633 * bug fix: the logic for getting names of functions gets less
4634 confused when confronded with alternate-metaclass
4635 funcallable-instances. (reported by Cyrus Harmon)
4636 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
4637 consistent, even on internal alternate-metaclass objects.
4638 * bug fix: flush closure information collected by physical
4639 environment analysis prepass before the main pass. (bug reported
4641 * bug fix: compiler pack phase does not modify a hashtable, which is
4642 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
4643 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
4644 may be expanded. (reported by Alexander <malishev> on c.l.l)
4645 * bug fix: no more style-warnings when compiling code using LAST
4646 under high-SPEED low-SPACE settings. (reported by David Wallin
4648 * fixed some incompatibilities between SBCL's MOP and the MOP
4650 ** the METAOBJECT class is now implemented;
4651 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
4652 STANDARD-OBJECT, as required;
4653 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
4654 now compatible (as required by VALIDATE-SUPERCLASS); there
4655 remains a consistency requirement over the presence or absence
4656 of the FUNCTION class in the superclass list of finalized
4657 classes; see the manual for more details;
4658 ** the :AROUND method for COMPUTE-SLOTS on
4659 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
4660 requested slot ordering.
4662 ** bug fix: parent thread now can be gc'ed even with a live
4664 ** bug fix: binding a special with PROGV to no value is not
4665 the same as that symbol not having been bound (thanks to
4667 ** bug fix: binding specials is thread safe (thanks to
4669 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
4670 and SB-SPROF do not die with 'no handler for signal XX in
4671 interrupt_handle_now(..)' anymore
4672 ** bug fix: WITH-TIMEOUT works with multiple running threads
4673 * fixed some bugs revealed by Paul Dietz' test suite:
4674 ** ENSURE-GENERIC-FUNCTION should take a method class object for
4675 the :method-class keyword argument.
4677 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
4678 * new port: the Solaris operating system on x86 processors is now
4679 mostly supported, though some rough edges in the environment
4680 remain. (thanks to Daisuke Homma)
4681 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
4682 space for its heap. (thanks to Thiemo Seufer)
4683 * optimization: SBCL on MIPS platforms now supports dynamic-extent
4684 closures. (thanks to Thiemo Seufer)
4685 * minor incompatible change: eof selects abort in the debugger.
4686 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
4687 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
4689 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
4690 deprecated, and will go away in a future revision of SBCL.
4691 * minor incompatible change: GC-ON and GC-OFF are no longer
4692 implemented with a counter, it does not matter how many times gc
4693 is switched on or off
4694 * bug fix: discriminating functions for generic function classes
4695 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
4696 make invalid assumptions about method precedence order. (reported
4698 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
4699 platforms. (thanks to Thiemo Seufer)
4700 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
4701 * bug fix: correct pathname printing with printer escaping is on.
4702 (thanks to Kevin Reid)
4703 * bug fix: complex VOP definitions in "user-space" no longer trigger
4704 package locks. (reported by Zach Beane)
4705 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
4706 for funcallable-instance functions, and is no different from
4708 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
4709 characters in the current readtable. (reported by Nicholas Neuss)
4710 * bug fix: SUBTYPEP on various CONS types returns more a more
4711 accurate acknowledgment of its certainty.
4712 * optimizations: REMOVE-DUPLICATES now runs in linear time on
4713 lists in some cases. This partially fixes bug 384.
4714 * flush all standard streams before prompting in the REPL and the
4716 * bug fix: signal handling and triggering gc do not conflict
4717 directly anymore, in particular a high frequency sb-sprof does
4718 not prevent gc from running
4719 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
4720 approximation for timezone and DST information between the
4721 universal time epoch and the smallest negative 32-bit time_t.
4722 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
4723 year 1899 so long as the encoded time is non-negative.
4724 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
4725 the correct answer for non-constant rotate amounts when performing
4726 an inline 32-bit rotation.
4728 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
4729 there is only one thread in the session
4730 ** bug fix: memory leak for streams created in one thread and
4731 written to in another
4732 ** bug fix: lockup when compiled with gcc4
4733 ** bug fix: race that allows the gc to be triggered when gc is
4735 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
4736 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
4738 ** bug fix: finished threads are gc'ed properly
4739 * fixed some bugs revealed by Paul Dietz' test suite:
4740 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
4741 has arguments with a different set of applicable methods from
4742 the orignal arguments.
4743 ** The type error thrown by MAP now has a correct expected-type
4745 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
4746 name a compiled function.
4747 ** Three MISC tests where a large bignum was improperly coerced to
4748 a float that couldn't represent that bignum during type
4749 derivation were fixed.
4750 ** SUBTYPEP can now handle types involving the negation of a
4751 list-form FUNCTION type.
4752 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
4753 as (COMPLEX (AND RATIO (NOT FIXNUM))).
4754 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
4756 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
4757 * New feature: Experimental support for bivalent streams: streams
4758 opened with :element-type :default now allow character and binary
4759 (unsigned-byte 8) I/O
4760 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
4761 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
4763 * bug fix: no more highly sporadic "couldn't check whether ~S is
4764 readable" when reading a stream and an interrupt hits in the middle
4765 of a select system call
4766 * compiler better recognizes complex arrays (reported by Eduardo
4768 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
4769 for variables on SBCL built with linkage-tables. (reported by Luis
4771 * various error reporting improvements.
4772 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
4773 (Thanks to Thiemo Seufer)
4774 * bug fix: nested reader invokations work correctly
4775 * bug fix: it is possible to have simultaneous references to foreign
4776 code and foreign data with the same name.
4778 ** added x86-64 support
4779 ** incompatible change: the threading api now works with thread
4780 objects instead of thread ids
4781 ** bug fix: threads are protected from signals and interruption when
4782 starting up or going down
4783 ** bug fix: a race where an exiting thread could lose its stack to gc
4784 ** bug fix: don't halt on infinite error in threads if possible
4785 ** fixed numerous gc deadlocks introduced in the pthread merge
4786 ** bug fix: fixed thread safety issues in read and print
4787 ** bug fix: debugger doesn't hang on session lock if interrupted at
4788 an inappropriate moment
4789 ** bug fix: run-program is now thread safe(r)
4790 ** bug fix: inner with-recursive-lock no longer releases the mutex
4791 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4792 * fixed some bugs revealed by Paul Dietz' test suite:
4793 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4794 EXPECTED-TYPE slots filled.
4795 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4797 ** MAKE-CONDITION accepts classes as type-designators.
4798 ** COMPILE may never return NIL.
4799 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4800 range before calling Unix time functions
4802 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4803 * numerous signal handling fixes to increase stability
4804 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4805 * minor incompatible change: we now correctly canonize default
4806 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4807 as per the MOP, rather than the historical (INITARG INITFUNCTION
4808 INITFORM). (reported by Bruno Haible)
4809 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4810 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4811 for more information.
4812 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4813 pathname is a directory pathname.
4814 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4815 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4817 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4818 :METACLASS argument in addition to a class name. (reported by
4819 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4820 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4821 (reported by Bruno Haible; patch from Gerd Moellmann)
4822 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4824 * bug fix: more cleanups to the floating point exception handling on
4825 x86-64 (thanks to James Knight)
4826 * bug fix: the compiler does not try to constant fold calls of
4827 COERCE and BIT-* functions when they return freshly constructed
4828 objects. (reported by Nikodemus Siivola and Paul Dietz)
4829 * optimization: improved the MIPS versions of generic (in the
4830 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4831 * optimization: direct conversion of (unsigned-byte 32) to floats on
4832 the PowerPC platform.
4833 * optimization: structure instances with raw slots now use less
4834 memory, and probably show better memory locality. (thanks to
4836 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4837 are treated as requests for stack allocation on the x86-64,
4838 Alpha-32, PPC and SPARC platforms.
4839 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4840 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4841 (thanks to Tony Martinez)
4843 ** gcing a dead thread can no longer lead to lockups
4844 ** threads block signals until they are set up properly
4845 ** errno is no longer shared by threads
4846 ** interrupt-thread restores the eflags register on x86
4847 ** fixed some lockups due to gc/thread interaction
4848 * fixed some bugs revealed by Paul Dietz' test suite:
4849 ** invalid dotted lists no longer raise a read error when
4850 *READ-SUPPRESS* is T
4851 ** signal an error if a symbol that names a declaration is used
4852 as the name of a type, or vice versa
4853 ** allow using the (declare (typespec var*)) abbreviation for
4854 (declare (type typespec var*)) with all type specifiers
4855 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4856 ** always return NIL from PPRINT-POP when OBJECT is NIL
4857 ** don't signal errors when pretty-printing malformed LABELS,
4858 FLET or MACROLET forms
4859 ** declarations in a DOLIST body are also in scope for the
4861 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4863 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4866 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4867 * fixed cross-compiler leakages that prevented building a 32-bit
4868 target with a 64-bit host compiler.
4869 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4870 opened with :IF-EXISTS :OVERWRITE.
4871 * fixed bug 281: error for an invalid qualifier in a short-form method
4872 combination method is not signalled until the faulty method is called.
4873 * bug fix: iteration variable type inferrer failed to deal with open
4874 intervals. (reported by Alan Shields)
4875 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4876 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4877 or more runtime options were provided to the sbcl binary.
4878 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4879 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4880 * optimization: there's now a fast-path for fixnum arguments in the
4881 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4882 * optimization: the code generated on x86-64 is more compact thanks
4883 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4884 * bug fix: floating-point exception handling now partly works on
4885 x86-64. (Thanks to James Knight)
4886 * improvement to the MIPS backend from Thiemo Seufer: C-style
4887 64-bit long long arguments and return values to alien functions
4889 * fixed some bugs revealed by Paul Dietz' test suite:
4890 ** the type-error signalled from WARN has a filled-in DATUM slot.
4891 ** the type-error required when a stream is not associated with
4892 a file has the stream as its datum.
4893 ** type-errors on single-floats on x86-64 no longer have
4894 :INVALID-OBJECT as the datum
4895 ** the type-errors signalled for invalid function names now have
4896 a correct expected type
4897 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4898 for structures defined with a :TYPE. Documentation strings for
4899 typed structures are no longer immediately discarded
4900 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4901 broadcast streams and synonym streams. FILE-LENGTH now also works
4902 on broadcast streams.
4904 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4905 * incompatible change: the --noprogrammer option, deprecated since
4906 version 0.7.5, has been removed. Please use the equivalent
4907 --disable-debugger option instead.
4908 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4910 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4911 inoperational for a while now) has been completely removed.
4912 * null lexical environments are now printed as #<NULL-LEXENV>,
4913 significantly reducing the amount of clutter in typical backtraces.
4914 * documentation on weak pointers, finalization, and after GC hooks
4915 has been added to the manual.
4916 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4917 as other specialized array types, is much faster. SUBSEQ and
4918 COPY-SEQ on such arrays have also been sped up.
4919 * optimization: EQL is now more efficient when at least other argument
4920 is known to be of type (OR FIXNUM (NOT NUMBER)).
4921 * fixed bug: the runtime is now less vulnerable to changes in the
4922 size of the SBCL object on OS X, and virtual memory is reserved for
4923 all spaces that need to be at a fixed address.
4924 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4925 * fixed bug: finalizers and after GC hooks that cause consing are now
4927 * fixed bug: compiler error messages and summaries are now printed to
4928 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4929 * fixed inference of the upper bound of an iteration variable.
4930 (reported by Rajat Datta).
4931 * fixed bug 211e: calling local functions with duplicated constant
4932 keyword argument no longer causes a bogus style warning about an
4934 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4935 ftype declaration to be disregarded. (reported by Dave Roberts)
4936 * fixed bug 373: caused by erronous compilation of references to alien
4937 variables in the runtime on ppc/darwin.
4938 * fixed bug 376: CONJUGATE type deriver.
4939 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4940 (reported by Baughn on #lisp)
4941 * a cross-compiler bug on non-x86 platforms has been identified and
4942 fixed. (thanks to Bruno Haible)
4943 * improvements to the MIPS runtime code for increased stability.
4944 (thanks to Thiemo Seufer)
4945 * increased the maximimum compact environment size to allow
4946 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4947 * partial workaround for bug 135: don't name the function we're
4948 calling for hairy cases of EVAL, so as not to accumulate one environment
4949 entry per call to EVAL. (reported by Kevin Reid)
4950 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4951 * optimization: type testing for non-vector arrays should be faster.
4952 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4954 * bug fix: setting 31st element of a bit vector to zero did not work
4956 * bug fix: redefining a class definition which failed due to a
4957 previous accessor / function clash now works (but see BUGS entry
4958 #380 for more problems in this area). (thanks to Zach Beane)
4959 * the long form of DEFINE-METHOD-COMBINATION disables method group
4960 checking when given a single method group with pattern *. (thanks
4962 * on x86 compiler supports stack allocation of results of simple
4963 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4964 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4965 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4966 * fixed some bugs related to Unicode integration:
4967 ** the restarts for recovering from input and output encoding
4968 errors only appear when there is in fact such an error to
4970 * fixed some bugs revealed by Paul Dietz' test suite:
4971 ** MISC.549 and similar: late transformation of unsafe type
4972 assertions into derived types caused unexpected code
4974 ** SCALE-FLOAT type deriver is less wrong.
4975 ** type derivers for EXP, LOG and similar functions compute result
4976 types for complex arguments better.
4977 ** (MISC.563) CONJUGATE type deriver works for very restricted
4979 ** out-of-line type testers for character strings are available.
4980 ** EQUAL compiler transform understands specialness of objects
4982 ** accessing double-floats stored on the stack now works on x86-64.
4983 ** debugger internals could sometimes create invalid lispobjs,
4984 resulting in GC crashes.
4985 ** MISC.548: type check weakening can convert required type into
4987 ** initialization forms for bindings are not in scope of free special
4990 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4991 * incompatible change: thread support for non-NPTL systems has
4992 been removed - locking is buggy and unreliable. A threaded
4993 SBCL build will now warn at startup and refuse to create
4994 new threads, unless futex support is detected in the kernel
4995 * incompatible change: the top level REPL now has only an ABORT
4996 restart associated with it, not TOPLEVEL and ABORT as it used to.
4997 TOP and TOPLEVEL are now available as debugger commands for
4998 returning to the top level.
4999 * incompatible change: forms evaluated in the REPL now use the
5000 global optimization policy.
5001 * incompatible change: user- and system-initialization files are
5002 no longer processed with LOAD, but by READ and EVAL; hence the
5003 global optimization policy, startup package, readtable, etc,
5005 * The .fasl file format number has been incremented because of
5006 various incompatible changes.
5007 * internal entry point details and argument counts no longer appear
5008 in backtraces unless explicitly requested by setting
5009 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
5010 * built-in and standard functions no longer have names like "top
5011 level local call to FOO".
5012 * fixed bug 32: functions defined in non-null lexical environments
5013 now have more legible printed representation
5014 * fixed bug 33: functions defined in non-null lexical environemnts
5015 are now more amenable to inspection by INSPECT.
5016 * workaround for bug 354: XEPs no longer appear in backtraces unless
5017 explicitly requested.
5018 * fixed bug: receiving the signal which results from attempting to
5019 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
5020 SIGBUS on other *BSDs) on architectures where the C stack is also
5021 the Lisp stack (x86 and x86-64) from foreign code no longer leads
5022 to debugger confusion or wild instability. (reported by Cheuksan
5024 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
5025 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
5026 (reported by Lutz Euler)
5027 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
5028 compiled code. (reported by Paul Dietz)
5029 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
5030 specialized parameter to a method to something that is not TYPEP
5031 the specializer is now possible.
5032 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
5033 face of package deletion.
5034 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
5035 pathname. (reported by David Tolpin on c.l.l)
5036 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
5037 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
5038 STRING-STREAM and FILE-STREAM, respectively.
5039 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
5040 than previously; in addition, its test suite is now run on build.
5041 (thanks to Luke Gorrie)
5042 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
5043 * optimization: added a immediate representation for single-floats
5045 * fixed some bugs revealed by Paul Dietz' test suite:
5046 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
5047 ** attempting to create a package with a colliding nickname causes
5048 correctable errors to be signalled.
5049 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
5050 ** several x86-64 backend bugs related to sign-extension of immediate
5053 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
5054 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
5055 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
5057 * fixed loading of multiply forward-referenced layouts.
5058 (thanks to Cheuksan Wang)
5059 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
5060 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
5061 (see COMPILE-FILE documentation for details of :PRINT option)
5062 * fixed bugs 19 and 317: fixed-format floating point printing is
5063 more accurate. This also fixes a bug reported by Adam Warner
5064 related to the ~@F format directive.
5065 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
5067 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
5068 dispatch table if the from-char is a dispatch macro character.
5069 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
5070 by the wordsize no longer ignore the last word. (reported by Lutz
5072 * fixed bug in type checking of dynamic-extent variables. (reported
5074 * optimization: sequence traversal functions use their freedom to
5075 coerce function designators to functions.
5076 * optimization: code with many calls to CLOS methods specialized on
5077 CLOS classes has had redundant type checks removed.
5078 * optimization: added declarations to speed up operations that access
5079 the internal character database (for example STRING-UPCASE)
5080 * optimization: comparison operations between floats and sufficiently small
5081 fixnums no longer create extra rationals
5082 * fixed some bugs related to Unicode integration:
5083 ** portions of multibyte characters at the end of buffers for
5084 character-based file input are correctly transferred to the
5085 start of the buffer at the next read.
5086 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
5087 passing it through to OPEN.
5088 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
5089 argument given to internal calls to OPEN.
5090 ** the built-in comment readers (introduced by character sequences
5091 ";" and "#|") are more forgiving to encoding errors; they will
5092 STYLE-WARN and then attempt to resync the stream at a character
5093 boundary. (thanks to Teemu Kalvas)
5094 * fixed some bugs in the x86-64 port:
5095 ** Negative short int return values from c-calls are sign-extended
5097 ** The stack is aligned to 16-bytes for c-calls, as required by
5098 the ABI. (thanks to Cheuksan Wang)
5099 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
5100 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
5101 for enums. (thanks to Vincent Arkesteijn)
5102 ** Multiple small optimizations and bugfixes for floating point
5104 * fixed some bugs revealed by Paul Dietz' test suite:
5105 ** Space, Tab, Linefeed, Return and Page have the invalid
5106 secondary constituent character trait.
5107 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
5109 ** WITH-INPUT-FROM-STRING should only update the index place on
5111 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
5112 works more reliably.
5113 ** Bit-array operations (BIT-AND and similar) worked incorrectly
5114 with one-dimensional arrays with fill pointers.
5115 ** TYPE-OF failed on a complex with an integer realpart and a
5117 ** compiler failure during type inference for the code of form
5118 (IF (EQL X (THE ...)) ...) (MISC.535).
5120 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
5121 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
5122 platform. The port supports 61-bit fixnums, large memory spaces
5123 and reloading shared object files.
5124 * enhancement: saving cores with foreign code loaded is now
5125 supported on ppc/Darwin in addition to the previously supported
5127 * enhancement: the statistical profiler now walks deeper into the
5128 call stack for more meaningful call-graphs and accrued time
5129 reports (x86/x86-64 only). It also now reports time spent in
5131 * enhancement: it is now possible to trace most individual methods
5132 of a generic function in addition to tracing the generic function
5134 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
5136 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
5137 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
5138 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
5139 produces an error. (thanks to Vincent Arkesteijn)
5140 * bug fix: NAMESTRING on pathnames with :WILD components in their
5141 directories works correctly. (thanks to Artem V. Andreev)
5142 * fixed bug 125: compiler preserves identity of closures. (reported
5144 * bug fixed: functions with &REST arguments sometimes failed with
5145 "Undefined function" when compiled with (DEBUG 3). (reported by
5147 * bug fix: overflow during compiling of setting element of a bit
5148 vector with constant index and value. (reported by Timmy Douglas)
5149 * build fix: fixed the dependence on *LOAD-PATHNAME* and
5150 *COMPILE-FILE-PATHNAME* being absolute pathnames.
5151 * on x86 compiler partially supports stack allocation of dynamic-extent
5153 * GO and RETURN-FROM do not check the extent of their exit points
5154 when compiled with SAFETY 0.
5155 * fixed some bugs related to Unicode integration:
5156 ** encoding and decoding errors are now much more robustly
5157 handled; it should now be possible to recover even from invalid
5158 input or output to the terminal. (thanks to Teemu Kalvas)
5159 ** provided a first cut at implementing STRING-TO-OCTETS and
5160 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
5161 ** altered the SB-MD5 contributed module slightly, changing the
5162 interface just enough for it to be supportable for builds where
5163 lisp characters are not eight bits.
5164 * fixed some bugs revealed by Paul Dietz' test suite:
5165 ** the FORMATTER-generated functions for ~V[ conditionals require
5166 the correct number of arguments.
5167 ** READ-FROM-STRING returns the mandated second value when applied
5168 to displaced strings.
5169 ** the #\Rubout and #\Backspace characters are treated as invalid
5170 constituent characters by the tokenizer.
5172 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
5173 * new feature: reloading changed shared object files with
5174 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
5175 * new feature: references to foreign variables and functions
5176 can now be compiled and loaded before the corresponding shared
5177 object file is loaded, as long as the foreign definitions are
5178 available at runtime.
5179 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
5180 supported. (thanks to Dan Debertin)
5181 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
5182 just keywords. (thanks to Vincent Arkesteijn)
5183 * fixed bug #331: structure-class instances corresponding to
5184 DEFSTRUCT forms are now created eagerly.
5185 * fixed bug #345: backtraces from calls to undefined functions work
5186 on x86 as well. Related bug #61 is now also partially fixed on x86
5187 (backtraces from throws to unknown catch tags.)
5188 * bug fix: lambda-list parsing is now stricter vrt. order and number
5189 of lambda-list keywords.
5190 * bug fix: as specified by AMOP, an error is signalled if a
5191 class-option appears multiple times in a DEFCLASS form. (reported
5193 * bug fix: RANDOM can be compiled when the compiler derives the type
5194 of its numeric argument as a disjoint set of small integers.
5195 (reported by Paul Dietz)
5196 * bug fix: starting a core saved with shared objects loaded when
5197 those objects are not available no longer causes threaded SBCL to
5198 hang. (reported by Sean Ross)
5199 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
5201 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
5202 argument, which must always be NIL. (reported by Kalle Niemitalo)
5203 * bug fix: printing 1.0d+23 no longer results in an error.
5204 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
5205 * bug fix: structure slot setters preserve evaluation order. (thanks
5207 * fixed some bugs related to Unicode integration:
5208 ** RUN-PROGRAM can allow its child to take input from a Lisp
5209 stream. (reported by Stefan Scholl)
5210 ** ASDF-INSTALL successfully downloads .tar.gz files in all
5211 locales. (reported by Ken Causey)
5212 * fixed some bugs revealed by Paul Dietz' test suite:
5213 ** INCF, DECF and REMF evaluate their place form as specified in
5215 ** FORMATTER expands ~{ ~} iteration directives with V or #
5216 parameters correctly.
5217 ** FORMATTER deals with the ~@[ ~] conditional directive where the
5218 consequent uses no arguments correctly.
5219 ** the system has a partial understanding of the (COMPLEX RATIO)
5221 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
5224 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
5225 * new feature: a build-time option (controlled by the :SB-UNICODE
5226 keyword feature, enabled by default) for building the system with
5227 support for the entire 21-bit character space defined by the
5229 * new feature: the system now has rudimentary external-format
5230 support; the primary user-visible change at this time is that
5231 characters with the high bit set (such as lower-case-e-acute) will
5232 print correctly to a terminal in a UTF-8 environment.
5233 * minor incompatible change: BASE-CHAR no longer names a class;
5234 however, CHARACTER continues to do so, as required by ANSI.
5235 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
5236 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
5237 has been moved to the SB-EXT package (temporarily re-exported from
5239 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
5240 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
5242 * fixed bug #351: better error-handlind and reporting for malformed
5244 * fixed bug #350: bignum-printing is now more memory-efficient,
5245 allowing printing of very large bignums, eg. (expt 2 10000000).
5246 (reported by Bruno Haible)
5247 * fixed bug #302: better primitive-type selection for intersection
5249 * fixed bug #308: non-graphic characters now all have names, as
5250 required. (reported by Bruno Haible)
5251 * bug fix: redefining a class with different superclasses now correctly
5252 removes it from the direct-subclasses of its previous superclasses.
5253 (reported by David Morse)
5254 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
5255 new value now works. (reported by Bruno Haible)
5256 * bug fix: correct canonicalization of multiple non-standard slot
5257 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
5258 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
5259 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
5260 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
5261 now exists, an signals an error.
5262 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
5263 during macroexpansion for non-iteration variables as well. (reported
5264 by Bruno Haible for CMUCL)
5265 * bug fix: Cyclic structures and unprintable objects in compiler
5266 messages no longer cause errors. (reported by Bruno Haible)
5267 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
5268 and READ-FROM-STRING all now return a primary value of NIL if
5269 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
5270 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
5271 (reported by Bruno Haible for CMUCL)
5272 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
5273 do not designate a condition. (reported by Bruno Haible for
5275 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
5276 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
5277 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
5278 permitting resolution in favour of any of the conflicting symbols.
5279 (reported by Bruno Haible for CMUCL)
5280 * bug fix: EQUAL compiler optimizations is less aggressive on
5281 strings which can potentially compare true despite having distinct
5282 specialized array element types.
5283 * bug fix: unit enumerations can be defined without dividing by
5284 zero. (thanks to Vincent Arkesteijn)
5285 * FORMAT compile-time argument count checking has been enhanced.
5286 (report from Bruno Haible for CMUCL)
5287 * a partial workaround for the bug 262: the compiler does not try to
5288 inline-expand a local function doing RETURN-FROM from a deleted
5289 BLOCK. (thanks to Peter Denno for the bug report and to David
5290 Wragg for the simple test case)
5291 * fixed some bugs revealed by Paul Dietz' test suite:
5292 ** RENAME-PACKAGE allows all package designators as new package
5294 ** constraint propagation and lambda variable substitution are
5295 more cautious in dealing with partially deleted code.
5296 ** compiler sometimes lost reoptimization passes.
5297 ** CERROR, given a condition as condition designator, passes its
5298 remaining arguments to the continue format control without
5300 ** Case-altering FORMAT directives work correctly on non-ASCII
5302 ** The REAL type specifier handles bounds outside the floating
5303 point ranges without signalling FLOATING-POINT-OVERFLOW.
5304 ** Functions with IR1-transformations can create intercomponent
5305 references to global functions.
5306 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
5308 ** FORMAT ~R treats a nil value for its first parameter correctly.
5310 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
5311 * enhancement: saving cores with foreign code loaded is now
5312 supported on x86/NetBSD and sparc/Linux in addition to the previously
5313 supported platforms.
5314 * bug fix: on some platforms repeated installations caused multiple
5315 copies of HTML documentation to be installed -- should not happen
5316 any more. (reported by Stefan Scholl)
5317 * bug fix: parsing self-recursive alien record types multiple times
5318 no longer causes infinite recursion. (reported by Thomas F. Burdick,
5319 original patch by Helmut Eller for CMUCL)
5320 * bug fix: stack-exhaustion detection works now on NetBSD as well.
5321 (thanks to Richard Kreuter)
5322 * bug fix: defining classes whose accessors are methods on existing
5323 generic functions in other (locked) packages no longer signals
5324 bogus package lock violations. (reported by François-René Rideau)
5325 * bug fix: special variables as DEFMETHOD parameters no longer have
5326 associated bogus type declarations. (reported by David Wragg and
5328 * bug fix: read-write consistency on streams of element-type
5329 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
5330 * bug fix: redefiniton of the only method of a generic function with
5331 no DEFGENERIC no longer emits a full WARNING. In addition,
5332 redefinition of generic functions with no DEFGENERIC to an
5333 incompatible lambda list now signals an error. (thanks to Zach
5335 * bug fix: DEFGENERIC now works even when there's a function of the
5336 same name in an enclosing lexical environment. (thanks to Zach
5338 * fixed compiler failure, caused by instrumenting code during
5339 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
5340 * optimization: added loop analysis and improved register allocation
5341 * fixed some bugs revealed by Paul Dietz' test suite:
5342 ** POSITION on displaced vectors with non-zero displacement
5343 returns the right answer.
5344 ** (SIMPLE-STRING) is a valid type specifier for sequence
5346 ** *PRINT-LEVEL* handling for slotless structures is pedantically
5348 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
5349 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
5351 ** The justification version of the FORMAT ~< directive treats
5352 non-zero minpad parameter correctly.
5354 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
5355 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
5356 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
5357 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
5358 the supported interface.
5359 * new feature: Single-stepping of code compiled with DEBUG 2 or
5360 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
5361 * new feature: saving cores with foreign code loaded is now
5362 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
5363 Timothy Moore's work for CMUCL)
5364 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
5365 parameters to * instead of NIL if no initform is supplied.
5366 (reported by Johan Bockgaard)
5367 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
5368 correctly when FUNCALL appears as the car of the form. Note:
5369 despite this FUNCALL forms are not currently subject to
5370 compiler-macro expansion. (port of Raymond Toy's fix for the
5371 same from CMUCL, reported by Johan Bockgaard)
5372 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
5373 (thanks for Teemu Kalvas)
5374 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
5375 case instead of terminating the iteration (thanks for Julian
5376 Squires, Sean Champ and Raymond Toy)
5377 * bug fix: incorrect expansion of defgeneric that caused a style
5378 warning. (thanks for Zach Beane)
5379 * bug fix: slot accessor effective method computation works properly
5380 for classes with multiple non-standard applicable methods on
5381 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
5382 * on x86 compiler supports stack allocation of results of LIST and
5383 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
5384 CMUCL implementation by Gerd Moellmann)
5385 * fixed some bugs revealed by Paul Dietz' test suite:
5386 ** FORMAT strings with both the ~<~:;~> form of the justification
5387 directive and pretty-printing directives cause an error.
5389 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
5390 * incompatible change: the internal functions
5391 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
5392 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
5393 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
5394 instead of the old functions.
5395 * new feature: on platforms where "dladdr" is available foreign
5396 function names now appear in backtraces. (based on Helmut Eller's
5398 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
5399 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
5401 * documentation: ASDF manual is now distributed with SBCL.
5402 * bug fix: SBCL can now load its contributed modules with REQUIRE
5403 even if the system-provided entries have been removed from
5404 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
5406 * bug fix: backtraces involving undefined functions or assembly
5407 routines are more informative. (thanks to Brian Downing)
5408 * bug fix: mutually referent alien structures now work correctly.
5409 (reported by Rick Taube)
5410 * bug fix: structures defined by WITH-ALIEN can be referred to
5411 within other definitions in the same WITH-ALIEN.
5412 * bug fix: division operators (MOD, TRUNCATE and the like) with
5413 constant zero divisors and integer dividends no longer generate
5415 * bug fix: provide default methods for INPUT-STREAM-P and
5416 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
5417 * bug fix: improve the detection and resolution of MOP metacycles
5418 (where effective method computation depends on the generic function
5419 having its effective method computed). (reported by Bruno Haible)
5420 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
5421 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
5422 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
5423 * bug fix: pathnames with relative directory components can be
5424 represented relative to default pathnames.
5425 * optimization: in taking the GCD of bignums, reduce the two bignums
5426 to approximately the same size (using Euclid's algorithm) before
5427 applying the more sophisticated binary GCD. (thanks to Juho
5429 * optimization: COUNT on bitvectors now operates word-at-a-time.
5430 * optimization: ASH with a positive, but not necessarily constant,
5431 (leftwards) shift, when in a modular context, is compiled to a
5433 * fixed some bugs revealed by Paul Dietz' test suite:
5434 ** FORMAT variable parameters ("~V<char>") are defaulted properly
5435 if the corresponding argument is NIL.
5436 ** FORMAT directives accepting a minpad parameter treat negative
5438 ** literal commas as character parameters to FORMAT directives are
5440 ** literal spaces directly after ~<Newline> directives within a
5441 format-logical-block (~:< ~@:>) do not induce :FILL-style
5442 conditional newlines.
5443 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
5444 as specified: it no longer includes conditional newlines).
5445 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
5447 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
5448 :PER-LINE-PREFIX argument does not evaluate to a string.
5450 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
5451 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
5452 the manual for details; for now, package locks can be disabled by
5453 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
5454 if no major problems are found then it is likely that they will be
5455 compiled in unconditionally.
5456 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
5457 unsupported operators on all platforms. To load a shared library
5458 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
5459 object file, link it into a shared library outside of SBCL and
5460 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
5462 * bug workaround: ROOM T and the GC were not working together
5463 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
5464 reporting facility aren't preserved. That reporting has been
5465 disabled, so now until and unless someone figures out how to make it
5466 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
5467 * minor incompatible change: as threatened around sbcl-0.8.0, the
5468 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
5469 The symbols are also exported from SB-PCL for backwards
5470 compatibility, but more so than before SB-PCL should be treated as
5471 an implementation-internal package.
5472 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
5474 * the SB-SPROF contrib now works on (most) non-x86 architectures.
5475 It is known as of this release not to work on the Alpha, however.
5476 * fixed bug #167: errors signalled due to illegal syntax in method
5477 bodies are now more legible.
5478 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
5479 designators and can hence be used with TYPEP.
5480 * fixed bug #333: CHECK-TYPE now ensures that the type error
5481 signalled, if any, has the right object to be accessed by
5482 TYPE-ERROR-DATUM. (reported by Tony Martinez)
5483 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
5484 5.1.2.3 for multiple-value place subforms. (reported by Kalle
5486 * fixed bug #334: programmatic addition of slots using specialized
5487 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
5488 and :ALLOCATION :CLASS slots.
5489 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
5490 float exponents. (rereported by Peter Seibel)
5491 * fixed a bug: #\Space (and other whitespace characters) are no
5492 longer considered to be macro characters in standard syntax by
5493 GET-MACRO-CHARACTER.
5494 * fixed bug: initialization of condition class metaobjects no longer
5495 causes an instance of the condition to be created. (reported by
5497 * fixed bug: it is now possible to have slots such that
5498 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
5499 description is neither :INSTANCE nor :CLASS.
5500 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
5501 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
5502 SLOT-VALUE-USING-CLASS), and no longer causes errors with
5503 non-standard SLOT-DEFINITION-ALLOCATION values.
5504 * fixed bugs: various race conditions handling exiting threads.
5505 CL-PPCRE's thread torture test now passes.
5506 * fixed arguably-a-bug: GC time proportional to number of threads in
5507 system even when most of them are idle
5508 * optimization: improved performance of BIT and SBIT on bit-vectors.
5509 * .fasl file incompatibility: The fasl file version number has
5510 been incremented because of changes associated with package locks.
5512 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
5513 * minor incompatible change: the system no longer provides
5514 optimization hints (conditions which are TYPEP
5515 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
5516 mode; these hints are still emitted when higher SPEED optimization
5518 * new contrib module: a sampling profiler (profiling by statistical
5519 sampling, rather than by instrumenting functions) is available as
5520 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
5521 * the behaviour of the standard function ED is now customizeable by
5522 third parties through a hook variable: see ED's documentation
5523 string for information on the protocol.
5524 * the compiler no longer emits efficiency notes for (FUNCALL X)
5525 when the type of X is uncertain under default optimization
5527 * fixed bug 276: mutating a binding of a specialized parameter to a
5528 method to something that is not TYPEP the specializer is now
5530 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
5531 exhibit the required behaviour on the x86 platform. (thanks to
5532 Peter van Eynde, Eric Marsden and Bruno Haible)
5533 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
5534 even for difficult arguments. (reported by Peter Graves)
5535 * fixed bug 141a: the backquote printer now descends quoted
5537 * fixed another bug in backquote printing: no more destructive
5538 modification of the form's list structure. (reported by Brian
5540 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
5541 move between its address being taken and the call to
5542 interrupt_thread, fixing a crashing race condition.
5543 * the SB-POSIX contrib implementation has been adjusted so that it
5544 no longer exhibits ridiculously poor performance when constructing
5545 instances corresponding to C structs.
5547 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
5548 * minor incompatible change: the sb-grovel contrib now treats C
5549 structures as alien (in the sense of SB-ALIEN) objects rather than
5550 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
5551 has implications for memory management of client code
5552 (sb-grovel-returned objects must now be manually managed) and for
5553 type safety (alien objects now have full types).
5554 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
5555 used to control emission of compiler diagnostics, rather than the
5556 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
5557 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
5558 quality should be considered deprecated.
5559 * install.sh now installs the user manual as well
5560 * (not quite a new documentable feature, but worth considering in
5561 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
5562 beginnings of a semantically meaningful condition hierarchy is
5563 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
5565 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
5566 designator as the defaults argument.
5567 * fixed bug: Displaced arrays whose displaced-to array has become
5568 too small now cause ARRAY-DIMENSION to signal an error, providing
5569 for safer bounds-checking. (reported by Bruno Haible)
5570 * fixed bug: DEFCLASS slot definitions with identical :READER and
5571 :WRITER names now signal a reasonable error. (reported by Thomas
5573 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
5575 * fixed bug: Invalid slot specification errors now print correctly.
5576 (thanks to Zach Beane)
5577 * fixed bug 320: Shared to local slot value transfers in class
5578 redefinitions now happen corrently from superclasses as
5579 well. (reported by Bruno Haible)
5580 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
5582 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
5583 improper lists correctly. (reported by Bruno Haible)
5584 * fixed bug 313: source-transform for <fun-name> was erroneously
5585 applied to a call of a value of a variable with name <fun-name>.
5586 (reported by Antonio Menezes Leitao)
5587 * fixed bug 307: The obsolete instance protocol ensures that
5588 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
5589 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
5590 remove dead unknown-values globs from the middle of the stack.
5591 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
5592 easier to resume long computations after using *BREAK-ON-SIGNALS*
5593 to diagnose and fix failures. (thanks to Nikodemus Siivola)
5594 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
5595 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
5596 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
5597 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
5598 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
5600 * fixed a (fairly theoretical) bug in string printing: if
5601 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
5602 does not have array-element-type equal to the most general string
5604 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
5605 function name. (thanks to Nikodemus Siivola)
5606 * fixed bug: compile-time format string checker failed on
5607 non-closed ~{. (reported by Thomas F Burdick)
5608 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
5609 don't warn on legal loop code involving more than one aggregate
5610 boolean. (thanks to Nikodemus Siivola)
5611 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
5612 in keyword position to MAKE-PACKAGE was not being reported as
5614 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
5615 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
5617 * fixed bugs 280 and 312: the checking for multiple definitions in a
5618 file is less likely to become confused by uses of inline
5620 * fixed bug: the #S reader macro performs the keyword coercion
5621 specified for slot names. (reported by Kalle Niemitalo)
5622 * fixed bug: lambda lists may contain symbols whose names start with
5623 & but are not lambda-list-keywords; their occurrence triggers a
5625 * fixed bug 321: define-method-combination argument lambda lists do
5626 not cause invalid code to be generated when &optional or &aux
5627 variables have default values. (reported by Bruno Haible)
5628 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
5629 have CLOS classes; this appears also to have fixed reported
5630 instability in stack exhaustion detection.
5631 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
5632 MUFFLE-WARNING when no associated restart is present is now
5634 * optimization: rearranged the expansion of various defining macros
5635 so that each expands into only one top-level form in a
5636 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
5638 * optimization: used a previously little-used slot in symbols to
5639 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
5641 * fixed some bugs revealed by Paul Dietz' test suite:
5642 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
5644 ** Fixed an optimization bug related to inheritance of initforms
5645 from local to shared slots.
5646 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
5647 ** CAST optimizer forgot to flush argument derived type.
5648 ** print/read consistency on floats is now orders of magnitude
5649 more likely. (thanks also to Bruno Haible for a similar report
5651 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
5652 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
5653 for objects of type REAL. Make it so.
5654 ** SXHASH is specified (infelicitously) to respect similarity,
5655 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
5656 it so. (thanks to Markus Ziegler)
5657 ** on the Alpha, the compiler succeeds in compiling functions
5658 returning a known number of arguments greater than 63.
5659 ** fixed handling of invalid NIL arguments in keyword position
5661 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
5663 ** provided a readably-printable representation for RANDOM-STATE
5665 ** ensured that pathnames, where they have a namestring, always
5666 print using #P"..." syntax.
5668 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
5669 * Support for the forthcoming 2.0 version of the NetBSD kernel
5670 running on x86 hardware has been added. (thanks to Perry
5671 E. Metzger most immediately, and others for their past work)
5672 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
5673 current release version; SBCL's OpenBSD support had been broken
5674 since about the time of OpenBSD's switch to ELF binary format.)
5675 * [placeholder for DX summary]
5676 ** user code with &REST lists declared dynamic-extent, under high
5677 speed or space and low safety and debug optimization policy.
5678 * The manual has been converted to Texinfo format and the debugger
5679 chapter from the cmucl manual has been added.
5680 * A facility has been added to extract documentation strings from
5681 sbcl and store them as Texinfo-formatted snippets for inclusion in
5682 the manual (via Texinfo's @include directive)
5683 * bug fix: compiler emitted division in optimized DEREF. (thanks for
5684 the test case to Dave Roberts)
5685 * bug fix: multidimensional simple arrays loaded from FASLs had fill
5686 pointers. (reported by Sean Ross)
5687 * bug fix: PROFILE output is printed nicely even for large numerical
5688 values. (thanks to Zach Beane)
5689 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
5690 greater than 32 handle EOF correctly.
5691 * bug fix: on X86 an immediate argument of the IMUL instruction is
5692 correctly printed in disassembly. (thanks to Lutz Euler)
5693 * bug fix: class slots in redefined classes preserve their old
5694 values. (thanks to Bruno Haible and Nikodemus Siivola)
5695 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
5696 succeeds. (reported by Marco Baringer)
5697 * fixed some bugs revealed by Paul Dietz' test suite:
5698 ** READ-SEQUENCE now works on ECHO-STREAMs.
5699 ** RATIONALIZE works more according to its specification. (thanks
5702 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
5703 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
5704 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
5705 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
5706 should matter to you only if you rebind the printer control
5707 variables and then find you want different bindings in the
5708 debugger than in the ordinary execution of your program.)
5709 * The runtime build system has been tweaked to support building
5710 (on SPARC/SunOS) using a C compiler which invokes Sun's own
5711 assembler and linker. (thanks to Nikodemus Siivola)
5712 * Unbound, undefined, undeclared variables now trigger full
5713 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
5714 more often programmer error than deliberate exploitation of undefined
5716 * optimization: the hash algorithm for strings has changed to one
5717 that is less vulnerable to spurious collisions. (thanks to Juho
5719 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
5720 needless bounds checking. (thanks to Juho Snellman)
5721 * optimization: implemented multiplication as a modular
5722 (UNSIGNED-BYTE 32) operation on the PPC backend.
5723 * fixed some bugs revealed by Paul Dietz' test suite:
5724 ** ADJUST-ARRAY now copies the datum in a zero rank array if
5726 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
5727 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
5728 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
5730 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
5732 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
5734 ** ECHO-STREAMs no longer attempt to echo the end of file value to
5735 their output stream on EOF from read.
5736 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
5737 have been read to end-of-file.
5738 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
5740 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
5741 description of determination of which consecutive characters
5743 ** Printing the "Space" character with escaping on now yields "#\\ ",
5744 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
5745 ** Reading floating-point numbers with *READ-BASE* set to a number
5746 less than 10 works correctly.
5747 ** Reading floating-point numbers with *READ-BASE* set to a number
5748 more than 10 works correctly.
5749 ** Printing with *PRINT-READABLY* targets the standard readtable, not
5750 the readtable currently in effect.
5752 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
5753 * minor incompatible change: parsing of namestrings on a physical
5754 (Unix) host has changed; numbers after the final #\. in a
5755 namestring are no longer interpreted as a version field. This is
5756 intented to be largely invisible to the user, except that the
5757 meaning of the namestring "*.*.*" has changed: it now refers to a
5758 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
5759 should usually be replaced by
5760 (make-pathname :name :wild :type :wild :version :wild)
5761 with the added benefit that this is more likely to be portable.
5762 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
5763 option to OPEN now signals an error if the file being opened
5764 exists; this may have an impact on existing code.
5765 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
5766 signals received, on the PowerPC platforms (both Linux and
5767 Darwin). (thanks to Pierre Mai for pointing out the location of
5769 * several fixes on OS X: The system now builds and runs cleanly on
5770 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
5771 (thanks to Brian Mastenbrook)
5772 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
5773 second-resolution: integer multiples of 1/3600 between -24 and 24.
5774 (thanks to Vincent Arkesteijn)
5775 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
5776 type when called with 1 argument; PEEK-CHAR checked type of
5777 PEEK-TYPE only after having read first character from a
5778 stream. (reported by Peter Graves)
5779 * bug fix: the garbage collector now has much better locality
5780 behaviour, and in particular no longer treats all memory as being
5781 exhausted when many small objects point to each other in a deeply
5783 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
5784 recognized as being TYPEP their class.
5785 * bug fix: the PUSHNEW documentation string has been corrected.
5786 (thanks to Vincent Arkesteijn)
5787 * bug fix: defaulting of the value for the last of an atypically
5788 large number of multiple values being bound was not being
5789 performed correctly on the Alpha or PPC platforms
5790 * optimization: implemented multiplication as a modular
5791 (UNSIGNED-BYTE 32) operation on the x86 backend.
5792 * optimization: SEARCH on simple-base-strings can now be open-coded.
5793 (see also contrib/compiler-extras.lisp for inspiration for
5794 teaching the compiler about the Boyer-Moore algorithm).
5795 * value, returned by MAX (and MIN) called with several EQUALP, but
5796 not EQL, arguments now does not depend on compiler settings.
5797 * fixed some bugs revealed by Paul Dietz' test suite:
5798 ** in stack analysis liveness information is propagated from
5799 non-local entry points.
5800 ** pathwise CAST removing failed when the CAST node did not start
5802 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5803 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5805 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5806 host is already defined.
5807 ** RENAME-FILE works on streams instead of signalling an internal
5809 ** PEEK-CHAR uses the current readtable when determining whether
5810 or not a character is whitespace.
5811 ** MERGE-PATHNAMES handles the case when the pathname does not
5812 specify a name while the default-pathname specifies a version.
5813 ** Pathnames now stand a better chance of respecting print/read
5815 ** Attempting to use standardized file system operators with a
5816 pathname with invalid :DIRECTORY components signals a
5818 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5820 ** DIRECTORY on logical pathnames is more correct.
5821 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5822 signal a TYPE-ERROR if their argument is not a stream.
5823 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5824 designator argument does not designate a stream.
5825 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5826 examining the synonym.
5827 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5829 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5830 element-type larger than ([UN]SIGNED-BYTE 32).
5832 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5833 * When built with the :SB-FUTEX feature, threaded builds now take
5834 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5835 for faster/more reliable mutex and condition variable support.
5836 * Incompatible change (but one you probably shouldn't have been using
5837 anyway): the interface and code for arbitrating between multiple
5838 threads in the same user session has been redesigned.
5839 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5840 error when called without an explicit environment argument.
5841 (thanks to Nikodemus Siivola)
5842 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5843 confused about their position. (thanks to Adam Warner and Gerd
5845 * bug fix: Pretty printing backquoted forms with unquotations in the
5846 argument list position of various code constructs such as LAMBDA
5847 now works correctly. (reported by Paul Dietz)
5848 * bug fix: Pretty printing unquotations no longer loses all
5849 stream position information.
5850 * optimization: performance of string output streams is now less
5851 poor for multiple small sequence writes.
5852 * optimization: performance of CSUBTYPEP in the presence of complex
5853 expressions involving CONS and NOT many times has been improved.
5854 (reported by Paul Dietz)
5855 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5857 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5858 streams for the REPL, for the debugger, and so on. (thanks to
5860 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5861 * fixed some bugs revealed by Paul Dietz' test suite:
5862 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5863 is ignored if it is too small, rather than propagating through
5864 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5865 ** extremely complex negations of CONS types were not being
5866 sufficiently canonicalized, leading to inconsistencies in
5868 ** VALUES tranformer lost derived type.
5870 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5871 * fixed a bootstrapping bug: the build process no longer assumes
5872 that the various BOOLE-related constants have the same value in
5873 host and target lisps. (noted by Paul Dietz' test suite on an
5874 SBCL binary built from CLISP)
5875 * The system can now be dynamically linked on the MIPS platform,
5876 which enables dynamic loading of foreign code from Lisp. (thanks
5877 to Ralf Baechle for discussions on the MIPS ABI)
5878 * The system now records debugging information for its own source
5879 files in a filesystem-position-independent manner, relative to
5880 the "SYS" logical host.
5881 * fixed a compiler bug: MV-LET convertion did not check references
5882 to the "max args" entry point. (reported by Brian Downing)
5883 * tweaked disassembly notes to be less confident about proclaiming
5884 some instruction as an LRA. (thanks to Brian Downing)
5885 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5886 now each have their own history, command character, and other
5887 characteristics. (thanks to David Lichteblau)
5888 * fixed some bugs revealed by Paul Dietz' test suite:
5889 ** compiler failure in compiling LOGAND expressions including a
5891 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5892 shift greater than 32.
5893 ** FLUSH-DEST did not mark blocks for type check regeneration.
5894 ** HANDLER-CASE failed to accept declarations in handler clauses
5895 in some circumstances.
5897 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5898 * New code in contrib/sb-introspect (still probably not entirely
5899 stable yet) provides some support for smart Lisp development
5900 environments like SLIME.
5901 * The conditions signalled for errors occurring when loading .fasl
5902 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5903 in a way which should help ASDF recover gracefully.
5904 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5905 stuff has been cleaned up. If you code contrib/ stuff, this might
5906 affect you, and you can look at contrib/README, contrib/STANDARDS,
5907 and/or the 0.8.4.27 diff to check.
5908 * In full calls the compiler now does not generate checks for declared
5909 argument types for all arguments.
5910 * various threading fixes
5911 ** and some experimental patches which didn't make it into
5912 the main tree for this release, but which are shipped in
5913 contrib/experimental-thread.patch as a possible fix for some
5914 failures (deadlock, spinning...) in GC-intensive multithreaded
5916 * fixed PPC build problem (source code incompatibility of different
5917 library versions): added offsetof() hackery which attempts to divine
5918 where glibc maintainers put uc_mcontext today
5919 * fixed bug 282: compiler does not trust type assertions while passing
5920 arguments to a full call.
5921 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5922 &OPTIONAL VALUES type parameter.
5923 * fix bug 214: algorithm for noting rejected templates is now more
5924 similar to that of template seletion. (also reported by rydis on
5926 * fixed bug 141b: printing backquoted information readably and prettily
5927 inserts a space where necessary.
5928 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5929 (CHARACTER 10) are now reported as errors, rather than propagated
5930 as unknown types. (reported by piso on #lisp)
5931 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5932 with values NIL and :ERROR. (thanks to Milan Zamazal)
5933 * fixed bug 191c: CLOS now does proper keyword argument checking as
5934 described in CLHS 7.6.5 and 7.6.5.1.
5935 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5936 longer raise an error; further, using a list as a for-as-arithmetic
5937 counter now raises a meaningful error.
5938 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5939 now understood by sequence creation functions such as MAKE-SEQUENCE
5941 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5942 a STRING-INPUT-STREAM.
5943 * compiler enhancement: SIGNUM is now better able to derive the type
5945 * type declarations inside WITH-SLOTS are checked. (reported by
5947 * fixed some bugs revealed by Paul Dietz' test suite:
5948 ** incorrect optimization of TRUNCATE for a positive first
5949 argument and negative second.
5950 ** compiler failure in let-convertion during flushing dead code.
5951 ** compiler failure while deriving type of TRUNCATE on an
5952 interval, containing 0.
5953 ** ASH of a negative bignum by a negative bignum count now returns
5955 ** intersection of CONS types now canonicalizes properly, fixing
5956 inconsistencies in SUBTYPEP.
5958 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5959 * incompatible change: The --disable-debugger command line
5960 option now clobbers the debugger at a more fundamental
5961 level, by redefining #'INVOKE-DEBUGGER instead of by
5962 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5963 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5964 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5965 enter the debugger REPL and then suffer recursive errors
5966 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5967 while under the new system, BREAK in --disable-debugger mode
5968 terminates the system just as an unhandled error would.
5969 * fixed compiler performance when processing loops with a step >1;
5970 * bug fix: DOCUMENTATION now retrieves generic function
5971 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5972 support has been systematized, and now supports the methods
5973 specified by ANSI, along with a default method and a method for
5974 slot documentation. (reported by Nathan Froyd)
5975 * bug fix: effective methods associated with a generic function are
5976 no longer cached over a change of that generic function's method
5977 combination. (reported by Andreas Fuchs)
5978 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5979 names a non-existent directory. (thanks to Andreas Fuchs)
5980 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5981 the PPC platform, lead to stack corruption; this has been fixed.
5982 (reported by Rainer Joswig)
5983 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5984 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5985 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5986 arithmetic in general, is now much more reliable on the PPC
5988 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5989 platform now returns the right answer.
5990 * optimization: restored some effective method precomputation in
5991 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5992 precomputation is now tunable.
5993 * optimization: compiler-internal data structure use has been
5994 reviewed, and changes have been made that should improve the
5995 performance of the compiler by about 20%.
5996 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5997 simple-base-strings and simple-bit-vectors is improved.
5998 * optimization: the optimization of 32-bit logical and arithmetic
5999 functions introduced in version 0.8.3 on the x86 has been
6000 implemented on the mips, ppc and sparc platforms; an
6001 implementation of the same facility, but for 64-bit arithmetic,
6002 has been added for the alpha.
6003 * microoptimization: the compiler is better able to make use of the
6004 x86 LEA instruction for multiplication by constants.
6005 * bug fix: in some situations compiler did not report usage of
6006 generic arithmetic in (SPEED 3) policy.
6007 * bug 145b fix: compiler used wrong type specifier while converting
6008 MEMBER-types to numeric.
6009 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
6011 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
6012 index argument now works properly on the Alpha platform.
6013 * bug fix: floating point exception treatment on the Alpha platform
6015 * bug fix: FILE-POSITION works much better on string input and
6016 output streams. (thanks to Nikodemus Siivola)
6017 * bug fix: many threading/garbage collection symptoms sorted.
6018 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
6019 might be pseudo-atomic.
6020 * internal change: Stopping for GC is now done with signals not
6021 ptrace. GC is now done in whichever thread wanted it, instead of
6023 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
6025 * bug fix: result form in DO is not contained in the implicit
6027 * incompatible change: ICR structure is changed; the value part of
6028 CONTINUATION is now called LVAR; corresponding functions are
6029 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
6030 * added type deriver for ISQRT (thanks to Robert E. Brown).
6031 * bug fix: better support for loading from the command line when an
6032 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
6034 * fixed some bugs revealed by Paul Dietz' test suite:
6035 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
6036 ** ROUND and FROUND now give the right answer when given very
6037 small float arguments.
6038 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
6040 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
6041 ** (GCD 0 <negative-integer>) returned <negative-integer>.
6042 ** LCM should return a non-negative integer.
6043 ** PARSE-INTEGER returned the index of a terminator instead of the
6044 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
6045 ** PARSE-INTEGER returned an incorrect index being applied to a
6047 ** LCM with two arguments of 0 returns 0 rather than signalling
6049 ** unsigned addition of a 32-bit constant with the high bit set no
6050 longer causes an internal compiler error on the x86.
6051 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
6052 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
6053 with negative last argument.
6054 ** byte specifiers with zero size and position no longer cause
6055 an error during type derivation.
6056 ** bignum multiplication on the Alpha platform now returns the
6058 * porting: The system now builds on SuSE AMD64, although it still
6059 generates a 32-bit binary.
6060 * .fasl file incompatibility: The fasl file version number has
6061 been incremented (because of the changes to internal compiler
6062 data structures referred to above).
6064 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
6065 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
6066 more accurately, on the Darwin kernel running on PowerPC hardware.
6067 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
6068 * Compiler code deletion notes now signal a condition of type
6069 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
6070 an associated MUFFLE-WARNING restart.
6071 * The compiler now performs limited argument count validation of
6072 constant format strings in FORMAT, and where appropriate in ERROR,
6073 CERROR and WARN. (thanks to Gerd Moellmann)
6074 * New ASDF-INSTALL contrib can be used for automatic download and
6075 installation of third-party Lisp code from CCLAN or other sites
6077 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
6078 which forces another thread to execute a function supplied by the
6080 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
6081 now accept and act upon their :ELEMENT-TYPE keyword argument.
6082 (reported by Martin Atzmueller, Edi Weitz)
6083 * bug fix: FILE-POSITION now accepts position designators up to
6084 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
6085 is the greater. (thanks to Patrik Nordebo)
6086 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
6087 Kalle Olavi Niemitalo)
6088 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
6089 printable. (reported by Eric Marsden)
6090 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
6091 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
6092 * x86 bug fix in control stack exhaustion checking: now shows backtrace
6093 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
6094 (thanks to Stig Sandoe)
6095 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
6096 UNREAD-CHAR now correctly includes the unread character in the
6097 target sequence. (thanks to Gerd Moellmann)
6098 * bug fix in threaded builds: the system can now be suspended and
6099 resumed by shell job control with minimal disruption.
6100 * bug fixes in times and timezones >2038AD
6101 * better handling of "where is GNU make?" problem in build scripts
6102 (thanks to Nikodemus Siivola)
6103 * new optimization: inside a named function any reference to a
6104 function with the same name is considered to be a self-reference;
6105 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
6106 optimization quality.
6107 * new optimization on x86: logical functions and + now have
6108 optimized (UNSIGNED-BYTE 32) versions, which are automatically
6109 used when the result is truncated to 32 bits.
6110 * VALUES declaration is partially enabled.
6111 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
6112 * fixed some bugs revealed by Paul Dietz' test suite:
6113 ** The system now obeys the constraint imposed by
6114 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
6115 types form a lattice under type intersection.
6116 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
6117 ** ASSOC now ignores NIL elements in an alist.
6118 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
6119 and (1+ MOST-POSITIVE-FIXNUM) answers.
6120 ** The addition of a method with invalid qualifiers to a generic
6121 function does not cause an error to be signalled immediately;
6122 a warning is signalled, and the error is generated only on
6123 calling the generic function.
6124 * changed .fasl file version number, in part to add type codes for
6125 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
6126 obscure ANSI requirements
6128 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
6129 * fixed bug 148: failure to inline-expand a local function left
6130 garbage, confusing the compiler.
6131 * fixed bugs 3cd: structure slot readers perform type check if the
6132 slot can have an invalid value (i.e. it is either not initialized
6133 or can be written with a less specific slot writer).
6134 * bug fix: the compiler now traps array references to elements off
6135 the end of an array; previously, the bounds checking in some
6136 circumstances could go off-by-one.
6137 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
6139 * type declarations for array element types now obey the description
6140 on the CLHS page "Declaration TYPE", as per discussions on
6141 sbcl-help around 2003-05-08. This means that a declaration
6142 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
6143 declaration, all references to BAR will be asserted or assumed
6144 (with THE, so dependent on compiler policy) to involve objects of
6145 type FOO. Note that no such declaration is implied in
6146 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
6147 * declared types of functions from the "Conditions"
6148 chapter. (reported by Paul Dietz)
6149 * bug fix: CERROR accepts a function as its first argument.
6150 * bug fix: NTH an NTHCDR accept a bignum as index
6151 arguments. (reported by Adam Warner)
6152 * optimization: character compare routines now optimize comparing
6153 against a constant character. (reported by Gilbert Baumann)
6154 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
6155 argument now works properly on the MIPS platform.
6156 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
6157 * repeated evaluation of the same DEFSTRUCT, a slot of which is
6158 declared to have a functional type, does not cause an error
6160 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
6161 many :DEFAULT-INITARGS. (reported by Istvan Marko)
6162 * fixed bug: if last continuation of a deleted block has a
6163 destination, this destination should be deleted too. (reported by
6165 * fixed a bug in the bootstrap process: the host compiler's values
6166 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
6167 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
6168 test case from Patrik Nordebo)
6169 * improved the ability of the disassembler on the PPC platform to
6170 provide helpful disassembly notes.
6171 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
6172 the class in more cases than previously.
6173 * bug fix: FILE-POSITION now understands :START and :END for
6174 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
6175 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
6176 8) data. (thanks to David Lichteblau)
6177 * bug fix: it is possible to add a method to a generic function
6178 without lambda list.
6179 * bug fix: reader failed to signal END-OF-FILE inside an
6180 object representation. (reported by Nikodemus Siivola)
6181 * fixed some bugs revealed by Paul Dietz' test suite:
6182 ** LAST and [N]BUTLAST should accept a bignum.
6183 ** condition slot accessors are methods.
6184 ** (VECTOR NIL) is a subtype of STRING.
6186 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
6187 * minor incompatible change: some nonsensical specialized lambda
6188 lists (used in DEFMETHOD) which were previously ignored now signal
6190 * minor incompatible change: the system is now aware of the types of
6191 variables in the COMMON-LISP package, and will signal errors for
6192 most violations of these type constraints (where previously they
6193 were silently accepted).
6194 * minor incompatible change: COMPILE-FILE now uses the freedom
6195 afforded (ANSI 3.2.2.3) to use derived function types for
6196 functions defined in the same file. This also permits the system
6197 to warn on static type mismatches and function
6198 redefinition. (Currently it does not work with high DEBUG level.)
6199 * minor incompatible change: VALUES declaration is disabled.
6200 * When issuing notes, the compiler now signals a condition of type
6201 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
6202 restart for use in user handlers. It is expected that the
6203 COMPILER-NOTE condition will eventually become a condition
6204 supertype to a hierarchy of note types, which will then be
6205 handleable in a similar fashion. However, at the moment, no such
6206 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
6207 but it's an implementation detail, not a classification for the
6209 * Changes in type checking closed the following bugs:
6210 ** type checking of unused values (192b, 194d, 203);
6211 ** template selection based on unsafe type assertions (192c, 236);
6212 ** type checking in branches (194bc).
6213 * A short form of VALUES type specifier has ANSI meaning (it has
6214 increased the number of situations when SBCL cannot perform type
6216 * fixed bug in DEFSTRUCT: once again, naming structure slots with
6217 keywords or constants is permissible.
6218 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
6219 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
6220 classes. (thanks to Antonio Martinez)
6221 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
6222 outputs FRESH-LINE or TERPRI, and no longer converts its stream
6223 argument to a pretty-print stream. Instead, it leaves any such
6224 operations to DESCRIBE-OBJECT methods.
6225 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
6227 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
6228 lambda lists. (thanks to David Lichteblau)
6229 * bug fix: Defining a generic function with a :METHOD-CLASS being a
6230 subclass of STANDARD-METHOD no longer causes stack exhaustion.
6231 (thanks to Gerd Moellmann)
6232 * fixed bug 246: increased compilation speed of long
6233 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
6235 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
6237 * DEFCONSTANT now throws a condition of type
6238 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
6239 constant to a non-EQL value; CONTINUE and ABORT restarts
6240 respectively change and preserve the value.
6241 * fixed bug 63: The code walker, part of the implementation of CLOS,
6242 is now better at handling symbol macros.
6243 * bug fix: There is no longer an internal implementation type named
6244 CL:LENGTH. (reported by Raymond Toy)
6245 * bug fix: In macro-like defining macros/special operators the
6246 implicit block does not enclose the lambda list.
6247 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
6248 enclosed in parentheses) are not suitable as type specifiers, and
6249 their use properly signals an error now.
6250 * bug fix: An argument count mismatch for a type specifier in code
6251 being compiled no longer causes an unhandled error at compile
6252 time, but signals a compile-time warning.
6253 * fixed simple vector readable printing
6254 * bug fix: DESCRIBE takes more care over whether the class
6255 precedence list slot of a class is bound before accessing it.
6256 (reported by Markus Krummenacker)
6257 * bug fix: FORMATTER can successfully compile pretty-printer format
6258 strings which use variants of the ~* directive inside.
6259 * bug fix: SEARCH now applies its TEST predicate to the elements of
6260 the arguments in the correct order. (thanks to Wolfhard Buss)
6261 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
6262 in type inference. (thanks to Robert E. Brown)
6263 * bug fix: Reading in symbols with an explicit package name of ""
6264 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
6265 * fixed some bugs revealed by Paul Dietz' test suite:
6266 ** NIL is now allowed as a structure slot name.
6267 ** Arbitrary numbers, not just REALs, are allowed in certain
6268 circumstances in LOOP for-as-arithmetic clauses.
6269 ** Multiple class redefinitions before slot access no longer
6270 causes a type error.
6271 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
6272 association between the name and a class.
6273 ** Generic functions with non-standard method-combination and over
6274 five methods all of which return constants no longer return NIL
6275 after the first few invocations. (thanks to Gerd Moellmann)
6276 ** CALL-NEXT-METHOD with no arguments now passes the original
6277 values of the arguments, even in the presence of assignment.
6278 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
6280 ** DISASSEMBLE works with closures and funcallable instances.
6281 ** ADD-METHOD now returns the generic function, not the new method.
6282 ** FIND-METHOD signals an error if the lengths of the specializers
6283 is incompatible with the generic function, even if the ERRORP
6285 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
6286 which its argument is a member.
6287 ** DEFCLASS only redefines the class named by its class-name
6288 argument if that name is the proper name of the class;
6289 otherwise, it creates a new class.
6290 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
6291 of the UNBOUND-SLOT condition to the name of the slot.
6292 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
6293 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
6294 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
6295 SLOT-MAKUNBOUND in the specified fashion.
6297 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
6298 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
6299 cross-compilation host. As a consequence, we can now bootstrap our
6300 way up to SBCL starting with a bare gcc toolchain and human-readable
6301 source code (first the source to CLISP, then the source to SBCL).
6302 * A contributed module containing a partial implementation of the
6303 simple-streams interface has been included. (thanks to Rudi
6305 * A contributed module implementing the RFC1321 Message Digest
6306 Algorithm, known as MD5, has been included.
6307 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
6308 no longer has any effect, as the code controlled by this feature
6309 has been deleted. (As far as we know, no-one has ever built using
6310 this feature, and its semantics were confused in any case).
6311 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
6312 work on conditions (as required by the ANSI specification),
6313 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
6314 expected behaviour on conditions. Users should note, however,
6315 that such behaviour is not required by the ANSI specification,
6316 and so use of this behaviour may render their code unportable.
6317 * fixed some bugs revealed by Paul Dietz' test suite:
6318 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
6320 ** &ENVIRONMENT parameter in macro lambda list is bound first.
6321 ** SXHASH on condition objects no longer returns NIL.
6322 ** :ALLOCATION :CLASS slots are better treated; their values are
6323 updated on class redefinition, and initforms inherited from
6324 superclasses are applied.
6325 ** REMOVE-METHOD returns its generic function argument even when
6326 no method was removed.
6327 ** SHARED-INITIALIZE now initializes the values of the requested
6328 slots, including those with :ALLOCATION :CLASS.
6329 ** ALLOCATE-INSTANCE now works on structure classes defined via
6330 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
6332 ** SLOT-EXISTS-P now works on conditions, as well as structures
6334 ** MAKE-LOAD-FORM now has the required methods on
6335 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
6336 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
6337 keyword, and now implements the SLOT-NAMES argument.
6338 ** methods with &OPTIONAL arguments no longer allow too many
6339 arguments to be passed in the call without error.
6340 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
6341 option is consistent with the required arguments of the generic
6342 function lambda list.
6343 * bug fix: REQUIRE accepts a string designator. (Thanks to
6345 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
6346 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
6347 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
6348 * bug fix: The compiler now checks for duplicated variables in macro
6350 * bug fix: SETQ on globals returns the correct value.
6351 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
6352 not a COMPILER-ERROR (followed by some other strange error on
6353 choosing the CONTINUE restart).
6354 * bug fix: make.sh and friends are now more consistent in the way that
6355 they look for GNU "make".
6357 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
6358 * experimental native threads support (on x86 Linux >=2.4 only).
6359 This is not compiled in by default: you need to add :SB-THREAD to
6360 the target features. See the "Beyond ANSI" chapter of the manual
6362 * fix for longstanding nonANSIism: The old distinction between
6363 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
6364 The return value from CL:FIND-CLASS is now a CLOS class, and
6365 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
6366 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
6367 * An interface to the MetaObject Protocol, as described in Kiczales,
6368 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
6369 MIT Press, 1991, is available from the SB-MOP package.
6370 * incompatible change: the SB-PCL package should now be considered
6371 a private implementation detail, and no longer a semi-private MOP
6373 * minor incompatible change: due to rearrangement for threads, the
6374 control stack and binding stack are now allocated at arbitrary
6375 addresses instead of being hardcoded per-port. Users affected by
6376 this probably have to be doing advanced things with shared
6377 libraries, and will know who they are.
6378 * minor incompatible change: Previously, all --eval forms used were
6379 processed with READ before any of them were processed with EVAL.
6380 Now each --eval form is processed with both READ and EVAL before
6381 the next --eval form is processed. (Thus package operations like
6382 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
6383 work as the user might reasonably expect.)
6384 * minor incompatible change: *STANDARD-INPUT* is now only an
6385 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
6387 * minor incompatible change: Y-OR-N-P is now character-oriented,
6388 not line oriented. Also, YES-OR-NO-P now works without errors.
6389 (thanks to Antonio Martinez)
6390 * sb-aclrepl module improvements: an integrated inspector, added
6391 repl features, and a bug fix to :trace command.
6392 * Known functions, which cannot be open coded by the backend, are
6393 considered to be able to check types of their arguments. (fixing
6394 a bug report by Nathan J. Froyd)
6395 * fixed a bug in computing method discriminating functions: It is
6396 now possible to define methods specialized on classes which have
6397 forward-referenced superclasses. (thanks to Gerd Moellmann)
6398 * fixed evaluation order in optional entries (reported by Gilbert
6400 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
6401 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
6402 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
6403 required-by-AMOP NAME argument, as well as CLASS and
6404 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
6405 * fixed bug 20: DEFMETHOD can define methods using names that are
6406 not the proper names of classes to designate class specializers.
6407 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
6408 Unix file descriptors, instead of blowing up. (thanks to Antonio
6410 * Garbage collection refactoring: user-visible change is that a
6411 call to the GC function during WITHOUT-GCING will not do garbage
6412 collection until the end of the WITHOUT-GCING. If you were doing
6413 this you were probably losing anyway.
6414 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
6415 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
6416 TYPEP the latter but not the former.
6417 * The compiler issues a full WARNING for calls to undefined functions
6418 with names from the CL package.
6419 * MAP-INTO for a vector destination is open coded. (reported by
6420 Brian Downing on c.l.l)
6421 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
6422 documentation string.
6423 * fixed some bugs revealed by Paul Dietz' test suite:
6424 ** COPY-ALIST now signals an error if its argument is a dotted
6426 ** Condition slots are now accessed more correctly in the presence
6427 of multiple initargs for a given slot.
6428 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
6429 exclude restarts of the same name associated with a different
6431 ** DEFCLASS of forward-referenced classes with another
6432 forward-referenced class in the superclasses list no longer
6434 ** Condition slots are now initialized once each, not multiple
6435 times. (thanks to Gerd Moellmann)
6436 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
6438 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
6439 ** NSET-EXCLUSIVE-OR does not return extra elements when its
6440 arguments contain duplicated elements.
6441 ** RESTART-CASE understands local macros.
6442 ** RESTART-CASE associates exactly its own restarts with a condition.
6443 ** ENDP in safe mode checks its argument to be of type LIST.
6444 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
6445 in question is unbound.
6446 ** Optimized MAKE-INSTANCE functions no longer cause internal
6447 assertion failures in the presence of duplicate initargs.
6448 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
6449 ** Side-effectful :DEFAULT-INITARGS have their side-effects
6450 propagated even in the ctor optimized implementation of
6452 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
6454 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
6455 * a better implementation of SXHASH on (simple) bit vectors,
6456 measured both in execution speed and in distribution of results
6457 over the positive fixnums, has been installed. Likewise, a better
6458 implementation of EQUAL for simple bit vectors is now available.
6459 * fixed CEILING optimization for a divisor of form 2^k.
6460 * fixed bug 240 (emitting extra style warnings "using the lexical
6461 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
6462 by Antonio Martinez)
6463 * fixed SXHASH, giving different results for NIL depending on type
6464 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
6465 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
6466 variable. (found by Rolf Wester)
6467 * SBCL does not ignore type declarations for special
6468 variables. (reported by rif on c.l.l 2003-03-05)
6469 * some bug fixes in contrib/sb-aclrepl/
6470 * fixed some bugs revealed by Paul Dietz' test suite:
6471 ** a bug in the CONS type specifier, whereby the CAR and CDR
6472 types got intertwined, has been fixed;
6473 ** the type system is now able to reason about the interaction
6474 between INTEGER and RATIO types more completely;
6475 ** APPEND, [N]REVERSE and NRECONC check that those their
6476 arguments, which must be proper lists, are really so;
6477 ** An array specialized to be unable to hold elements has been
6478 implemented, as required -- yes, really -- by ANSI;
6479 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
6480 on malformed property lists;
6482 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
6483 * incompatible packaging change: in line with Unix convention,
6484 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
6485 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
6486 * REQUIRE and PROVIDE are now optionally capable of doing something
6487 useful. See the documentation string for REQUIRE.
6488 * infrastructure for a managed SBCL contrib system: contributed
6489 modules in this release include:
6490 ** the ASDF system definition facility;
6491 ** an interface to the BSD Sockets API;
6492 ** an ACL-like convenience interface to the repl;
6493 (thanks to Kevin Rosenberg)
6494 ** an implementation of ROTATE-BYTE, with efficient implementation
6496 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
6497 gives a closer approximation to the right answer than previously.
6498 (thanks to Raymond Toy)
6499 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
6500 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
6501 optional environment arguments, as required by ANSI.
6502 * fixed bugs in other functions taking environment objects, allowing
6503 calls with an explicit NIL environment argument to be compiled
6505 * fixed bug 228: primary return values from
6506 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
6507 COMPILE or FUNCTION.
6508 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
6509 :TYPE will no longer signal errors on innocuous objects.
6510 * fixed bug 231b: SETQ is better at respecting type declarations in
6511 the lexical environment.
6512 * fixed a bug in DEFCLASS: classes named by symbols with no or
6513 unprintable packages can now be defined.
6514 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
6515 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
6516 * fixed compiler failure related to checking types of functions.
6517 (reported by Robert E. Brown)
6518 * the compiler is now much more consistent in its error-checking
6519 treatment of bounding index arguments to sequence functions: in
6520 (SAFETY 3) code, errors will be signalled in almost all cases if
6521 invalid sequence bounding indices are passed to functions defined
6522 by ANSI to operate on sequences.
6523 * fixed a bug in the build procedure: documentation of SBCL-specific
6524 packages is now preserved and available in the final Lisp image.
6525 * lifted FDEFINITION lookup out of loops in the implementation of
6526 many list operations. (thanks to Robert E. Brown)
6527 * fixed a bug in the reader: the #n# reader macro now works for
6528 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
6529 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
6530 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
6531 E. Brown and Tony Martinez respectively)
6532 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
6533 SLOT-BOUNDP: in particular, it is now able to optimize them much
6534 better, and is now not vulnerable to having packages renamed.
6535 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
6536 always called when a slot is not present in an instance. (thanks
6538 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
6539 longer signal an error on unreading a character following EOF on
6540 the previous constituent stream. (thanks to Tony Martinez)
6541 * fixed some bugs revealed by Paul Dietz' test suite:
6542 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
6543 not just nonnegative fixnums;
6544 ** the logical bit-array operators such as BIT-AND now accept an
6545 explicit NIL for their "opt-arg" argument (to indicate a
6546 freshly-consed result bit-array);
6547 ** ELT now signals an error on an invalid sequence index in safe
6549 ** the type system is now cleverer about negations of numeric
6550 types, and consequently understands the BIGNUM and RATIO types
6552 ** the type system is now cleverer about the interaction between
6553 INTEGER and RATIO types: while bugs still remain, many more
6554 cases are accurately computed;
6555 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
6556 if it is in the last clause;
6557 ** CONSTANTLY now correctly returns a side-effect-free function in
6559 ** DECLARE is no longer treated as a special-operator; in
6560 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
6561 * incremented fasl file version number due to the change in the
6562 DEFSTRUCT-SLOT-DESCRIPTION structure.
6564 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
6565 * minor incompatible change: code processed by the "interpreter" or
6566 EVAL now has a compilation optimization policy of (DEBUG 2)
6567 (changed from (DEBUG 1)) to improve debuggability of interactive
6568 development, and to allow the use of the debug RETURN command in
6570 * an experimental implementation of the RETURN command for the
6571 debugger has been included. (thanks to Frederik Kuivinen)
6572 * fixed bug 62: constraints were not propagated into a loop.
6573 * fixed bug in embedded calls of SORT (reported and investigated by
6575 * fixed some bugs revealed by Paul Dietz' test suite:
6576 ** printing and reading of arrays with some dimensions having
6577 length 0 (thanks to Gerd Moellmann);
6578 ** BOA constructor with &AUX argument without a default value does
6579 not cause a type error;
6580 ** CONSTANTP now returns true for all self-evaluating objects.
6582 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
6583 * fixed bug 127: DEFSTRUCT now does not clobber old structure
6584 accessors that are related by inheritance, as specified in the
6585 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
6586 Valtteri Vuorikoski)
6587 * The compiler is now able to inline functions that were defined in
6588 a complex lexical environment (e.g. inside a MACROLET).
6589 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
6591 * Support for the upcoming FreeBSD-5.0 release has been included.
6592 (thanks to Dag-Erling Smorgrav)
6593 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
6594 effect when it is not in a toplevel context.
6595 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
6596 stand a better chance of being correct. (thanks to Gerd
6598 * fixed bug in COERCE, which now signals an error on coercing a
6599 rational to a bounded real type which excludes the expected
6601 * The compiler is now able to derive types more accurately from the
6602 COERCE and COMPILE functions.
6603 * fixed bug 223: functional binding is considered to be constant
6604 only for symbols in the CL package.
6605 * fixed bug 231: SETQ did not check the type of a variable being set
6606 (reported by Robert E. Brown)
6607 * A new optimization for MAKE-INSTANCE has been included, fixing
6608 various bugs (including relating to :ALLOCATION :CLASS slots and
6609 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
6611 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
6612 ** As required by ANSI, LOOP now disallows anonymous collection
6613 clauses such as COLLECT I in conjunction with aggregate boolean
6614 clauses such as THEREIS (= I 1);
6615 ** LOOP now signals an error when any variable is reused in the
6616 same loop (including the potentially useful construct analogous
6617 to WITH A = 1 WITH A = (1+ A);
6618 ** IT is only a special loop symbol within the first clause of a
6619 conditional loop clause;
6620 ** LOOP with a typed iteration variable over a hashtable now
6621 signals a type error iff it should.
6622 * fixed some other bugs revealed by Paul Dietz' test suite:
6623 ** FILE-STREAM now names the class previously known as FD-STREAM;
6624 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
6625 argument) no longer signals an error;
6626 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
6627 of the slot symbol, rather than using the current package
6628 ((:CONC-NAME "") continues to intern the slot's name in the
6630 * incremented fasl file version number, because of the incompatible
6631 change to the DEFSTRUCT-DESCRIPTION structure, and again because
6632 of the new implementation of DEFINE-COMPILER-MACRO.
6634 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
6635 * Support for building SBCL for MIPS platforms running in
6636 little-endian mode has now been checked in, and basic
6637 functionality on said platforms verified.
6638 * minor incompatible change: PCL now records the pathname of a file
6639 in which methods and the like are defined, rather than its
6641 * minor incompatible change: TRUENAME now considers the truename of
6642 a file naming a directory to be the pathname with :DIRECTORY
6643 component indicating that directory.
6644 * minor incompatible change: a NAMED clause in the extended form of
6645 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
6646 reason for the previous behaviour is unclear.
6647 * more systematization and improvement of CLOS and MOP conformance
6648 in PCL (thanks to Gerd Moellman and Pierre Mai):
6649 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
6651 ** DEFINE-METHOD-COMBINATION no longer signals an error for
6652 primary methods with no specializers;
6653 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
6655 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
6656 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
6657 FORWARD-REFERENCED-CLASSes; error reporting on
6658 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
6660 ** SXHASH on CLOS instances now uses a slot internal to the
6661 instance to return different numbers on distinct instances,
6662 while preserving the same return value through invocations of
6664 ** DEFMETHOD signals errors when methods with longer incongruent
6665 lambda lists are added to generic functions;
6666 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
6667 CLASS, as specified in AMOP;
6668 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
6669 on the order returned by the primary method for classes of
6670 class STANDARD-CLASS;
6671 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
6672 * fixed some bugs shown by Paul Dietz' test suite:
6673 ** DOLIST puts its body in TAGBODY;
6674 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
6676 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
6677 value producing form;
6678 ** if more variables are given to PROGV than values, extra
6679 variables are bound and made to have no value;
6680 ** NSUBSTITUTE on list arguments gets the right answer with
6682 ** ELT signals an error of type TYPE-ERROR when the index argument
6683 is not a valid sequence index;
6684 ** LOOP signals (at macroexpansion time) an error of type
6685 PROGRAM-ERROR when duplicate variable names are found;
6686 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
6687 ** FUNCALL of special-operators now cause an error of type
6689 ** PSETQ now works as required in the presence of side-effecting
6690 symbol-macro places;
6691 ** NCONC accepts any object as its last argument;
6692 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
6694 ** loop-for-as-package does not require a package to be explicitely
6696 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
6698 * fixed bug 166: compiler preserves "there is a way to go"
6699 invariant when deleting code.
6700 * fixed bug 172: macro lambda lists with required arguments after
6701 &REST arguments now cause an error to be signalled. (thanks to
6703 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
6704 bug. (thanks to Matthew Danish)
6705 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
6707 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
6708 arguments are lexically rebound. (thanks to Gerd Moellmann and
6710 * fixed bug 194: error messages are now more informative when there
6711 is no primary method applicable in a call to a generic
6712 function. (thanks to Gerd Moellmann)
6713 * fixed bug in command line argument checking (thanks to Julian
6715 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
6716 (thanks to Matthew Danish)
6717 * incremented fasl file version number, because of the
6718 SXHASH-related changes in the layout of CLOS data structures
6720 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
6721 * minor incompatible change: The runtime (the Unix executable named
6722 "sbcl") is now much pickier about the .core files it will load.
6723 Essentially it now requires .core files to descend from the same
6724 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
6725 as the runtime does. (The intent is to prevent the crashes which
6726 can occur, and which can even be reported as mysterious failures,
6727 when people patch the sources or change the build parameters
6728 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
6729 sbcl and .core files.)
6730 * fixed bug: VALUES-LIST is no longer optimized away.
6731 * fixed bug 142: The FFI conversion of C string values to Lisp
6732 string values no longer conses excessively. (thanks to Nathan
6733 Froyd porting Raymond Toy's fix to CMU CL)
6734 * began to systematize and improve MOP conformance in PCL (thanks to
6735 Nathan Froyd, Gerd Moellman and Pierre Mai):
6736 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
6738 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
6739 ** FINALIZE-INHERITANCE is now called on class finalization;
6740 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
6741 argument precedence order.
6742 * fixed bug 202: The compiler no longer fails on functions whose
6743 derived types contradict their declared type.
6744 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
6745 so it can be non-toplevel.
6746 * The fasl file version number has changed (because of the new
6747 implementation of DEFMACRO).
6748 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
6749 safe code, that any length requirement by their type-specifier
6750 argument is valid. The exceptions to this are described in bug
6752 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
6753 functions now check the types of their inputs as required by ANSI.
6754 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
6755 introduced symbol is DECLAREd to be SPECIAL.
6756 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
6757 * fixed bug: :COUNT argument to sequence functions may be negative
6758 * fixed bug: body of DO-SYMBOLS may contain declarations
6759 * fixed bug: PUSHNEW now evaluates its arguments from left to right
6760 (reported by Paul F. Dietz, fixed by Gerd Moellman)
6761 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
6762 symbol macro only once
6763 * fixed printing of call frame when argument list is unavailable
6764 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
6765 * compiler no longer signals WARNING on unknown keyword
6768 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
6769 * A beta-quality port to the mips architecture running Linux,
6770 based on the old CMUCL backend, has been made. It has been tested
6771 on a big-endian kernel, and works sufficiently well to be able to
6772 rebuild itself; it has not been tested in little-endian mode.
6773 * fixed an inconsistency between gencgc.c and purify.c which made
6774 dumping/loading .core files unreliable
6775 * fixed bug 120a: The compiler now deals correctly with IFs where
6776 the consequent is the same as the alternative, instead of
6777 misderiving the return type. (thanks to Alexey Dejneka)
6778 * fixed bug 113: Logical pathnames are now dumpable (the logical
6779 host is resolved at load-time, throwing an error if it is not
6781 * fixed bug 174: FORMAT's error message is slightly clearer when a
6782 non-printing character is used in a format directive.
6783 * fixed several bugs in compiler checking of type declarations, i.e.
6784 violations of the Python "declarations are assertions" principle
6785 (thanks to Alexey Dejneka)
6786 * fixed several bugs in PCL's error checking (thanks to Gerd
6788 * fixed bug: printing of FILE-ERROR (thanks to Antonio
6790 * fixed bug in compilation of functions as first class values
6791 (thanks to Antonio Martinez-Shotton)
6792 * The compiler's handling TYPE-ERRORs which it can prove will
6793 inevitably happen at runtime has been cleaned up and corrected
6794 in several ways. (thanks to Alexey Dejneka)
6795 * improved argument type checking for various basic arithmetic
6796 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6797 lavished on them in the past that they can be compiled in many
6798 ways in different special cases
6799 * fixed bug 181: compiler checks validity of user supplied type
6801 * cleaned up code flushing in optimization: Function calls which
6802 should signal errors for safety purposes (e.g. which ANSI says
6803 should signal errors when their arguments are of incorrect type)
6804 are no longer optimized away.
6805 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6806 * incremented fasl file version number, because changes in the
6807 implementation of sequence functions like COERCE caused
6808 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6809 in old inline expansions) to become undefined. (Actually these
6810 changes were later undone, so we might very well be binary
6811 compatible with 0.7.7 after all, but leaving the version number
6812 incremented seemed like the simplest and most conservative
6815 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6816 * An alpha-quality port to the parisc architecture running Linux,
6817 based on the old CMUCL backend, has been made. This, even more so
6818 than the other backends, should be considered still a work in
6819 progress; known problems include that the Linux kernel in 64-bit
6820 mode does not propagate the correct sigcontext structure to
6821 userspace, and consequently SBCL on a parisc64 kernel will not
6823 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6824 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6825 suppressed.) Also now that the compiler is looking at declarations
6826 in the environment, it checks optimization declarations as well,
6827 and suppresses inlining when (> DEBUG SPEED).
6828 * More fixes have been made to treatment of floating point exception
6829 treatment and other Unix signals. In particular, floating point
6830 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6831 * The detection and handling of control stack exhaustion (infinite
6832 or very deeply nested recursion) has changed. Stack exhaustion
6833 detection is now done by write-protecting pages at the OS level
6834 and applies at all optimization settings; when found, a
6835 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6836 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6837 be caught using IGNORE-ERRORS.
6838 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6839 correctly when transforming recursive LABELS functions to LETs.
6840 (thanks to Alexey Dejneka)
6841 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6842 that are names of constants or global variables.
6843 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6844 alien routines with docstrings.
6845 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6846 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6848 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6849 (thanks to Eric Marsden)
6850 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6851 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6852 * Bug fix: The SPARC backend can now compile functions involving
6853 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6854 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6855 to a functions expecting a PATHNAME-DESIGNATOR.
6856 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6857 lambda lists. (thanks to Alexey Dejneka)
6858 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6859 functions so that EXPORTing the name of the class doesn't cause
6860 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6861 to Antonio Martinez for reporting this)
6862 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6863 constant-folded without failing an assertion. (thanks to Einar
6864 Floystad Dorum for reporting this)
6865 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6866 types are now dealt with more correctly by the compiler.
6867 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6868 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6869 behaviour analogous to RENAME-FILE. This puts its behaviour more
6870 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6872 * The fasl file version number has changed again. (because of the
6873 bug fix involving the names of PCL MAKE-INSTANCE functions)
6875 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6876 * bug fix: Floating point exceptions are treated much more
6877 consistently on the x86/Linux and PPC/Linux platforms.
6878 * Array initialization with :INITIAL-ELEMENT is now much faster for
6879 cases when the compiler cannot open code the array creation, but
6880 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6881 array accesses have also seen a speed increase.
6882 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6883 specified. (This was at the root of some bad interactions between
6884 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6886 * bug fix: Internal error arguments for undefined functions are now
6887 computed correctly on the PPC/Linux platform.
6888 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6889 Raymond Toy's patch for CMU CL)
6890 * Support for the Solaris 9 operating environment has been included
6891 (thanks to Daniel Merritt)
6892 * A very ugly but hopefully complete draft of the missing FFI chapter
6893 of the manual has been created by reformatting the corresponding
6894 CMU CL manual chapter into (currently very ugly and incoherent)
6895 DocBook and bringing it up to date for SBCL behavior. Thus, the
6896 manual is now essentially complete, at least by my extreme
6897 once-and-only-once standards, whereby it's acceptable to refer to
6898 the doc strings of SB-EXT functions as the primary documentation.
6899 * The fasl file version number has changed again, due to cleanup of
6900 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6901 is no longer a static symbol.)
6903 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6904 * SBCL now builds with OpenMCL (version 0.12) as the
6905 cross-compilation host; also, more progress has been made toward
6906 bootstrapping under CLISP.
6907 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6909 * bug 158 fixed: The compiler can now deal with integer loop
6910 increments different from 1; fixing this turned out also to fix
6912 * bug 169 fixed: no more bogus warnings about using lexical bindings
6913 despite the presence of perfectly good SPECIAL declarations (thanks
6914 to David Lichteblau)
6915 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6916 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6917 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6919 * bug 180 fixed: Method combination specifications no longer ignore
6920 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6921 * bug fix: Structure type predicate functions now check their argument
6922 count as they should.
6923 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6924 correctly. (thanks to Pierre Mai)
6925 * minor incompatible change: The --noprogrammer option is deprecated
6926 in favor of the new --disable-debugger option, which is very similar.
6927 (The major difference is that it takes effect at a slightly different
6928 time at startup, causing handling of errors in --sysinit and
6929 --userinit files will be affected differently.) The
6930 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6931 been added to allow this functionality to be controlled from ordinary
6932 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6933 maintainers, who might want to run non-interactive scripts to
6934 build SBCL cores which will later be used interactively.)
6935 * minor incompatible change: The LOAD function no longer, when given
6936 a wild pathname to load, loads all files matching that pathname.
6937 Instead, an error of type FILE-ERROR is signalled.
6939 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6940 * bug 147 fixed: The compiler preserves its block link/count
6941 invariants more correctly now so that it doesn't crash. (thanks
6943 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6945 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6946 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6947 no-value-for-this-character as NIL (as specified by ANSI).
6948 * HOST-NAMESTRING on physical pathnames now returns a string that is
6949 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6950 (thanks to Christophe Rhodes)
6951 * The Alpha port handles icache flushing more correctly. (thanks to
6953 * More progress has been made toward bootstrapping under CLISP. (thanks
6954 to Christophe Rhodes)
6955 * The fasl file format has changed again, because dynamic loading
6956 on OpenBSD (which has non-ELF object files) motivated some cleanups
6957 in the way that foreign symbols are transformed and passed around.
6958 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6959 is no longer treated as whitespace by the reader, but instead as
6960 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6961 |A
\x7fB|, instead of A as it used to.
6963 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6964 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6965 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6966 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6967 this as of 0.7.1.45, but was left out of the previous news section
6968 (thanks to Dan Barlow)
6969 * SBCL now runs on the Solaris operating system on SPARC architectures
6970 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6971 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6972 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6973 * SPARC backend cleanups, allowing builds of cores optimized for V8
6974 and V9 SPARCS, and also emission of code targeted to a particular
6975 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6977 * SBCL is closer to bootstrapping under CLISP, thanks to various
6978 fixes by Christophe Rhodes.
6979 * The fasl file format has changed again, to allow the compiler's
6980 INFO database to support symbol macros.
6981 * The user manual (in doc/) is formatted into HTML more nicely.
6982 (thanks to coreythomas)
6983 * The system is smarter about SUBTYPEP relationships, especially
6984 those involving NOT types (including types such as ATOM which are
6985 represented internally using NOT types). Thus SUBTYPEP is less
6986 likely to return (VALUES NIL NIL) in general, and in particular
6987 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6989 * The fasl file format has changed again, because the internal
6990 representation of types now includes a new slot to support the new
6991 SUBTYPEP-of-NOT-types logic.
6992 * (not a change in the main branch of SBCL, but a related prototype
6993 which can hopefully be merged into the main branch of SBCL in the
6994 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6995 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6996 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6997 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6998 dispatch macro character combinations. (thanks to Alexey Dejneka)
6999 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
7000 that superficially look like logical namestrings correctly.
7001 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
7003 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
7004 default supplied-p) for &optional and &key arguments. (thanks to
7007 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
7008 * incompatible change: The compiler is now less aggressive about
7009 tail call optimization, doing it only when (> SPACE DEBUG) or
7010 (> SPEED DEBUG). (This is an incompatible change because there are
7011 programs which relied on the old CMU-CL-style behavior to optimize
7012 away their unbounded recursion which will now die of stack overflow.)
7013 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
7014 for non-GENCGC systems has been increased to 20M (since that
7015 seems much closer to the likely performance optimum for modern
7016 systems than the old 4M value was)
7017 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
7018 and *DEBUG-PRINT-LEVEL*
7019 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
7020 of CMU CL's support for SPARC, and various endianness and other
7021 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
7022 * new syntactic sugar for the Unix command line: --load foo.bar is now
7023 an alternate notation for --eval '(load "foo.bar")'.
7025 ** The system now detects stack overflow and handles it gracefully,
7026 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
7027 optimization settings. (This is a good thing in general, and
7028 its introduction in this version should be particularly timely
7029 for anyone whose code fails because of suppression of tail
7031 ** The system now hunts for the C variable "environ" in a more
7032 devious way, to avoid segfaults when the C library version differs
7033 between compile time and run time. (thanks to Christophe Rhodes)
7034 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
7035 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
7036 ** The compiler no longer issues bogus style warnings for undefined
7037 classes in the same source file as the DEFCLASSes which defined
7038 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
7040 ** fixes in CONDITION class precedence list for undefined function
7041 errors (thanks to Alexei Dejneka)
7042 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
7043 correctly. (thanks to Dan Barlow)
7044 ** portability fixes aiming at bootstrapping under CLISP (thanks
7045 to Dave McDonald and Christophe Rhodes)
7046 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
7047 ** fixes in type translation and and type inference (thanks to
7049 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
7050 ** various fixes in the new ports (thanks to Dan Barlow)
7051 * several changes related to debugging:
7052 ** suppression of tail recursion, as noted above
7053 ** stack overflow detection, as noted above
7054 ** The default implementation of TRACE has changed. :ENCAPSULATE T
7055 is now the default. (For some time encapsulation has been more
7056 reliable than the breakpoint-based :ENCAPSULATE NIL
7057 implementation, at least on X86 systems; and I just noticed that
7058 encapsulation also seems closer to the spirit of the ANSI
7061 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
7063 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
7064 up properly again. (There was a packaging bug in 0.7.0 which
7065 left their definitions in SB-SYS::LOAD-FOREIGN and
7066 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
7067 vital for most things which interface to C-level interfaces,
7068 like extensions working with sockets or databases or
7069 Perl-compatible regexes or whatever, and the need to fix
7070 this bug is the main reason that 0.7.1 was released so
7072 ** DEFGENERIC is now choosier about the methods it redefines, so that
7073 reLOADing a previously-LOADed file containing DEFGENERICs does
7074 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
7075 cycle now works as it should. (thanks to Alexey Dejneka)
7076 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
7077 fixed by Christophe Rhodes. (He actually submitted this patch
7078 months ago, and I delayed until after 0.7.0.)
7079 ** Bug 111 (internal compiler confusion about runtime checks on
7080 FUNCTION types) was fixed by Alexey Dejneka.
7081 * Some internal cleanups (getting rid of variables which aren't
7082 needed now that the byte interpreter is gone) caused the fasl
7083 file format number to change again.
7085 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
7086 * major incompatible change: The default fasl file extension, i.e. the
7087 default extension for files produced by COMPILE-FILE, has changed
7088 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
7090 ** There are many changes in the implementation of the compiler.
7091 SBCL is now essentially a compiler-only implementation of ANSI
7092 Common Lisp. EVAL still "interprets" a few special cases, but
7093 almost all the interesting cases are handled by creating
7094 a LAMBDA expression, calling COMPILE on it, then calling
7095 FUNCALL on the result.
7096 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
7097 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
7098 Since the code is newer, there might still be some new bugs
7099 (though not as many as before Martin Atzmueller's fixes:-). But
7100 the new code is substantially simpler and clearer, and hopefully
7101 any remaining bugs will be simpler, less fundamental, and more
7102 fixable then the bugs in the old code.
7103 ** The revised compiler is still a little unsteady on its feet.
7105 *** The debugging information it produces (particularly the names
7106 of FUNCTION objects) is sometimes much less useful than what
7107 the old compiler produced.
7108 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
7109 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
7110 within a MACROLET) has been temporarily weakened.
7111 ** There are new compiler optimizations for various functions:
7112 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
7113 FIND-IF-NOT, POSITION-IF-NOT, and FILL
7114 *** the math functions TRUNCATE, FLOOR, and CEILING
7115 *** the function-of-all-trades COERCE
7116 Mostly these should be transparent, but there's one
7117 potentially-annoying problem (bug 117): when the compiler
7118 inline-expands a function and does type analysis on the result,
7119 it can create control paths which have type mismatches, and
7120 when it can't prove that those control paths aren't taken,
7121 it will issue WARNINGs about the type mismatches. This is
7122 a particular problem in practice for the new sequence functions.
7123 It's not clear how this should be fixed, and for now, a
7124 workaround is given in the entry for 117 in the BUGS file.
7125 ** (Because of the interaction between the two previous items --
7126 occasional inlining problems and new inline expansions -- some
7127 of the new sequence function optimizations won't really kick in
7128 completely until debugging information, and then inlining, are
7129 straightened out in some future version.)
7130 * minor incompatible changes:
7131 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
7132 DIRECTORY no longer implicitly promotes NIL slots of its
7133 pathname argument to :WILD. In particular, when you ask for the
7134 contents of a directory (which you used to be able to do without
7135 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
7136 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
7137 ** changes in behavior that ANSI explicitly defines to be
7138 implementation dependent:
7139 *** The new compiler-only implementation still conforms with ANSI,
7140 but acts a little different than before. Besides the obvious
7141 changes in performance tradeoffs (that the cost per form passed
7142 to EVAL has gone up, and the cost per form executed by EVAL
7143 has gone down), the behavior of the system changes a little
7144 because there are no longer any interpreted function objects.
7145 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
7146 e.g. doing COMPILE on the output of interactive DEFUN is
7148 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
7150 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
7151 has changed from (:CL) to NIL.
7152 *** The CHAR-NAME of unprintable ASCII characters which, unlike
7153 e.g. #\Newline and #\Tab, don't have names specified in the
7154 ANSI Common Lisp standard, is now based on their ASCII symbolic
7155 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
7156 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
7157 are no longer used for output.
7158 ** changes in internal implementation constants:
7159 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
7160 4 million. (If your application spends a lot of time GCing and
7161 you have a lot of RAM, you might want to experiment with
7162 increasing it even more.)
7163 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
7164 However, almost all old code should still continue to work without
7165 immediate update, as SB-C-CALL is now a (deprecated) nickname
7167 ** Old operator names in the style DEF-FOO are now deprecated in
7168 favor of new corresponding names DEFINE-FOO, for consistency with
7169 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
7170 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
7171 internal symbols, but a few supported extensions like
7172 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
7173 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
7174 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
7175 etc. as you get deeper into recursive calls to the debugger
7176 command loop, instead of the old "5]", "5]]", "5]]]"
7177 sequence. (I was motivated to do this when squabbles between
7178 ILISP and SBCL left me very deeply nested in the debugger. In the
7179 short term, this change will probably provoke more ILISP/SBCL
7180 squabbles, but hopefully it will be an improvement in the long run.)
7181 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
7182 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
7183 function, since declaiming return types involving aliens is
7184 (1) annoyingly messy to do by hand and (2) vital to efficient
7185 compilation of code which calls such functions.
7186 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
7187 longer reexported by the SB-EXT package. They're solely useful
7188 for alien code, so it seems more logical that you should get
7189 them from the SB-ALIEN package, not in SB-EXT.
7190 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
7191 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
7192 features. Instead, the code that they used to control is always
7193 built into the system.
7194 * many other bug fixes
7195 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
7196 advantage of the new EVAL-WHEN stuff and to clean them up in
7197 general, and they are now more ANSI-compliant in a number of
7198 ways. Martin Atzmueller is responsible for a lot of this.
7199 ** Besides the cleanups discussed above, Martin Atzmueller fixed
7201 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
7202 *** correct ERROR type for various file operations
7203 *** some fixes for Lisp streams
7204 *** DEFMETHOD syntax checking
7205 *** changing old weird representation of debug information as
7206 strings (which, among their other deficiencies, don't transform
7207 correctly when you rename packages, and don't change their
7208 print representation when you change things like *PACKAGE*
7209 and *PRINT-LENGTH*) to symbols and lists of symbols
7210 He also made several improvements and fixed several bugs in DESCRIBE.
7211 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
7213 *** misbehavior of WRITE-STRING/WRITE-LINE
7214 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
7215 and several other LOOP problems as well
7216 *** DIRECTORY when similar filenames are present
7217 *** DEFGENERIC with :METHOD options
7218 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
7219 *** bug in the optimization of ARRAY-ELEMENT-TYPE
7220 *** argument ordering in FIND with :TEST option
7221 *** mishandled package designator argument in APROPOS-LIST
7222 *** various problems in the backquote readmacro
7223 *** a bug in APROPOS
7224 *** probably some others that I'm not describing very well here,
7225 since the CVS log documents them by reference to sbcl-devel
7226 messages, and the SourceForge archives aren't working well.:-(
7227 ** Dan Barlow improved the Alpha port (and is making progress on the
7228 PPC port, for those of you who think different).
7229 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
7230 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
7231 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
7232 continues to work on the SPARC port (for those of you in a position
7233 to look down upon our little PC-compatible boxes from a great height).
7234 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
7235 and uses that copy, rather than the current dynamic value, when
7236 it's trying to decide whether to truncate output. Thus e.g.
7237 (let ((*print-lines* 50))
7238 (pprint-logical-block (stream nil)
7240 (let ((*print-lines* 8))
7241 (print (aref possiblybigthings i) stream)))))
7242 should now truncate the logical block only at 50 lines, instead of
7243 often truncating it at 8 lines, as it did before.
7244 * The doc/cmucl/ directory, containing old CMU CL documentation
7245 from the time of the fork, is no longer part of the base system.
7246 SourceForge has shut down its anonymous FTP service, and with it
7247 my original plan for distributing the old CMU CL documentation
7248 there. For now, if you need these files you can download an old
7249 SBCL source release and extract them from it.
7250 * The fasl file version number changed again, for dozens of reasons,
7251 some of which are apparent above.
7253 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
7254 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
7255 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
7256 patch, so that DISASSEMBLE output is much nicer.
7257 * The code in the SB-PROFILE package now seems reasonably stable.
7258 I still haven't decided what the final interface should look like
7259 (I'd like PROFILE to interact cleanly with TRACE, since both
7260 facilities use function encapsulation) but if you have a need
7261 for profiling now, you can probably use it successfully with
7262 the current CMU-CL-style interface.
7263 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
7264 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
7265 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
7266 link now returns the dangling link itself, and for similar
7267 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
7268 link itself. (In these cases the old code signalled an error and
7269 looped endlessly, respectively.) Thus, DIRECTORY now works even
7270 in the presence of dangling and cyclic symbolic links.
7271 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
7272 is now a supported extension again, since the consensus on
7273 sbcl-devel was that it can be useful for ordinary development
7274 work, not just for debugging SBCL itself.
7275 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
7276 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
7277 that currently-defined functions might be redefined later with
7278 different return types.
7279 * Hash tables can be printed readably, as inspired by CMU CL code
7280 of Eric Marsden and SBCL code of Martin Atzmueller.
7281 * better error handling in CLOS method combination, thanks to
7282 Martin Atzmueller porting Pierre Mai's CMU CL patches
7283 * more overflow fixes for >16Mbyte I/O buffers
7284 * A bug in READ has been fixed, so that now a single Ctrl-D
7285 character suffices to cause end-of-file on character streams.
7286 In particular, now you only need one Ctrl-D at the command
7287 line (not two) to exit SBCL.
7288 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
7290 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
7291 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
7292 does the right thing.
7293 * The implementation of some type tests, especially for CONDITION
7294 types, is now tidier and maybe faster, due to CMU CL code
7295 originally by Douglas Crosher, ported by Martin Atzmueller.
7296 * Some math functions have been fixed, and there are new
7297 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
7298 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
7299 * (There are also some new optimizers in contrib/*-extras.lisp. Those
7300 aren't built into sbcl-0.6.13, but are a sneak preview of what's
7301 likely to be built into sbcl-0.7.0.)
7302 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
7303 CL, ported to SBCL by Martin Atzmueller)
7304 * DESCRIBE now gives more information in some cases. (Pierre Mai's
7305 patch to CMU CL, ported to SBCL by Martin Atzmueller)
7306 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
7307 * There's a new slam.sh hack to shorten the edit/compile/debug
7308 cycle for low-level changes to SBCL itself, and a new
7309 :SB-AFTER-XC-CORE target feature to control the generation of
7310 the after-xc.core file needed by slam.sh.
7311 * minor incompatible change: The ENTRY-POINTS &KEY argument to
7312 COMPILE-FILE is no longer supported, so that now every function
7313 gets an entry point, so that block compilation looks a little
7314 more like the plain vanilla ANSI section 3.2.2.3 scheme.
7315 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
7316 returns the number of bytes consed since the system started,
7317 rather than the number consed since the first time the function
7318 was called. (The new definition parallels ANSI functions like
7319 CL:GET-INTERNAL-RUN-TIME.)
7320 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
7321 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
7322 supported. Now DIRECTORY always does the abstract Common-Lisp-y
7323 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
7324 * Fasl file version numbers are now independent of the target CPU,
7325 since historically most system changes which required version
7326 number changes have affected all CPUs equally. Similarly,
7327 the byte fasl file version is now equal to the ordinary
7330 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
7331 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
7332 is no longer recognized. I apologize for this, because it was
7333 listed in SB-EXT as a supported extension, but I found that
7334 its existing behavior was poorly specified, as well as incorrectly
7335 specified, and it looked like too much of a mess to straighten it
7336 out. I have enough on my hands trying to get ANSI stuff to work..
7337 * many patches ported from CMU CL by Martin Atzmueller, with
7338 half a dozen bug fixes in pretty-printing and the debugger, and
7339 half a dozen others elsewhere
7340 * fixed bug 13: Floating point infinities are now supported again.
7341 They might still be a little bit flaky, but thanks to bug reports
7342 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
7343 as flaky as they were.
7344 * The --noprogrammer command line option is now supported. (Its
7345 behavior is slightly different in detail from what the old man
7346 page claimed it would do, but it's still appropriate under the
7347 same circumstances that the man page talks about.)
7348 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
7349 are now supported, and enabled by default. Thus, the compiler can
7350 handle many floating point and complex operations much less
7351 inefficiently. (Thus e.g. you can implement a complex FFT
7353 * The compiler now detects type mismatches between DECLAIM FTYPE
7354 and DEFUN better, and implements CHECK-TYPE more correctly, and
7355 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
7356 thanks to patches from Martin Atzmueller.
7357 * various fixes to make the cross-compiler more portable to
7358 ANSI-conforming-but-different cross-compilation hosts (notably
7359 Lispworks for Windows, following bug reports from Arthur Lemmens)
7360 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
7361 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
7362 fixed thanks to Pierre Mai's CMU CL patches.
7363 * fixes to keep the system from overflowing internal counters when
7364 it tries to use i/o buffers larger than 16M bytes
7365 * fixed bug 45a: Various internal functions required to support
7366 complex special functions have been merged from CMU CL sources.
7367 (When I was first setting up SBCL, I misunderstood a compile-time
7368 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
7369 * improved support for type intersection and union, fixing bug 12
7370 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
7371 more obscure bugs as well
7372 * some steps toward byte-compiling non-performance-critical
7373 parts of the system, courtesy of patches from Martin Atzmueller
7374 * Christophe Rhodes has made some debian packages of sbcl at
7375 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
7376 From his sbcl-devel e-mail of 2001-04-08 they're not completely
7377 stable, but are nonetheless usable. When he's ready, I'd be happy
7378 to add them to the SourceForge "File Releases" section. (And if
7379 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
7380 * new fasl file format version number (because of changes in
7381 internal representation of (OR ..) types to accommodate the new
7382 support for (AND ..) types, among other things)
7384 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
7385 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
7387 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
7389 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
7390 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
7391 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
7392 * DESCRIBE now works on structure objects again.
7393 * Most function call argument type mismatches are now handled as
7394 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
7395 know whether the function will be redefined before the call is
7396 executed. (The compiler could flag local calls with full WARNINGs,
7397 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
7398 it doesn't keep track of enough information to know whether calls
7399 are local in this sense.)
7400 * Compiler output is now more verbose, with messages truncated
7401 later than before. (There should be some supported way for users
7402 to override the default verbosity, but I haven't decided how to
7403 provide it yet, so this behavior is still controlled by the internal
7404 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
7405 src/compiler/ir1util.lisp.)
7406 * Fasl file format version numbers have increased again, because
7407 support for the Gray streams extension changes the layout of the
7408 system's STREAM objects.
7409 * The Gray subclassable streams extension now works, thanks to a
7410 patch from Martin Atzmueller.
7411 * The full LOAD-FOREIGN extension (not just the primitive
7412 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
7413 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
7414 but like most other programs, it defaults to copying the Unix
7415 environment from the original process instead of starting the
7416 new process in an empty environment.
7417 * Extensions which manipulate the Unix environment now support
7418 an :ENVIRONMENT keyword option which doesn't smash case or
7419 do other bad things. The CMU-CL-style :ENV option is retained
7420 for porting convenience.
7421 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
7422 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
7424 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
7426 * A patch from Martin Atzmueller seems to have solved the SIGINT
7427 problem, and as far as we know, signal-handling now works cleanly.
7428 (If you find any new bugs, please report them!)
7429 * The system no longer defaults Lisp source file names to types
7430 ".l", ".cl", or ".lsp", but only to ".lisp".
7431 * The compiler no longer uses special default file extensions for
7432 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
7433 seems to expect a single default extension for all compiled code,
7434 and there's no compelling reason to try to stretch the standard
7435 to allow two different extensions.) Instead, byte-compiled files
7436 default to the same extension as native-compiled files.
7437 * Fasl file format version numbers have increased again, because
7438 a rearrangement of internal implementation packages made some
7439 dumped symbols in old fasl files unreadable in new cores.
7440 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
7441 many fewer weird special cases.
7442 * Bug #17 (differing COMPILE-FILE behavior between logical and
7443 physical pathnames) has been fixed, and some related misbehavior too,
7444 thanks to a patch from Martin Atzmueller.
7445 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
7446 by Tim Moore, ported to SBCL by Martin Atzmueller.
7447 * Martin Atzmueller fixed several filesystem-related problems,
7448 including bug #36, in part by porting CMU CL patches, which were
7449 written in part by Paul Werkowski.
7450 * More compiler warnings in src/runtime/ are gone, thanks to
7451 more patches from Martin Atzmueller.
7452 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
7455 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
7457 * DESCRIBE now works on CONDITION objects.
7458 * The debugger now handles errors which arise when trying to print
7459 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
7461 * The build system now uses an additional file, customize-target-features.lisp,
7462 to allow local modifications to the target *FEATURES* list. (The point of
7463 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
7464 debugging features enabled, without having to worry about propagating it
7465 into everyone's system when I do a "cvs update".) When no
7466 customize-target-features.lisp file exists, the target *FEATURES* list
7467 should be constructed the same way as before.
7468 * fixed bugs in DEFCONSTANT ANSI-compatibility:
7469 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
7470 warn about behavior which is undefined under the ANSI spec. Note: This
7471 is specified by ANSI, but it's not very popular with programmers.
7472 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
7473 macro in the SBCL sources for an example of a workaround which you
7474 might use to make portable ANSI-standard code which does what you want.
7475 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
7476 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
7477 when it's used as a non-toplevel form. (This is required in order
7478 to implement the DEFCONSTANT-EQX macro.)
7479 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
7480 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
7481 funny things, due to bugs in the implementation of EVAL-WHEN
7482 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
7483 non-toplevel DEFCONSTANTs are uncommon.)
7484 * The core file version number and fasl file version number have been
7485 incremented, because the old noncompliant DEFCONSTANT behavior involved
7486 calling functions which no longer exist, and because I also took the
7487 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
7488 * fixed bug 1 (error handling before read-eval-print loop starts), and
7489 redid debugger restarts and related debugger commands somewhat while
7491 ** The QUIT debugger command is gone, since it did something
7492 rather different than the SB-EXT:QUIT command, and since it never
7493 worked properly outside the main toplevel read/eval/print loop.
7494 Invoking the new TOPLEVEL restart provides the same functionality.
7495 ** The GO debugger command is also gone, since you can just invoke
7496 the CONTINUE restart directly instead.
7497 ** The TOP debugger command is also gone, since it's redundant with the
7498 FRAME 0 command, and since it interfered with abbreviations for the
7500 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
7502 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
7503 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
7504 some porting work by Martin Atzmueller)
7505 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
7506 with a boatload of patches which he ported to SBCL. Now that those
7508 ** The system tries to make sure that its low-priority messages
7509 are prefixed by semicolons, to help people who like to use
7510 syntax highlighting in their ILISP buffer. (This patch
7511 was originally due to Raymond Toy.)
7512 ** The system now optimizes INTEGER-LENGTH better, thanks to more
7513 patches originally written by Raymond Toy.
7514 ** The compiler understands coercion between single-value and
7515 multiple-VALUES type expressions better, getting rid of some very
7516 weird behavior, thanks to patches originally by Robert MacLachlan
7517 and Douglas Crosher.
7518 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
7519 lambda lists, thanks to a patch originally by Pierre Mai.
7520 ** The system no longer bogusly warns about "abbreviated type
7522 ** The compiler gets less confused by inlining and RETURN-FROM,
7523 thanks to some patches originally by Tim Moore.
7524 ** The system no longer hangs when dumping circular lists to fasl
7525 files, thanks to a patch originally from Douglas Crosher.
7526 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
7527 undefined function error.
7528 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
7529 in structure slot initforms) for now, documented workaround instead:-|
7530 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
7531 * fixed bug 5: added stubs for various Gray stream functions called
7532 in the not-a-CL:STREAM case, so that even when Gray streams aren't
7533 installed, at least appropriate type errors are generated
7534 * fixed bug 8: better reporting of various PROGRAM-ERRORs
7535 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
7536 consistently in DEFMETHOD forms.
7537 * removed bug 21 from BUGS, since Martin Atzmueller points out that
7538 it doesn't seem to affect SBCL after all
7539 * The C runtime system now builds with better optimization and many
7540 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
7542 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
7544 * The system is now under CVS at SourceForge (instead of the
7545 CVS repository on my home machine).
7546 * The new signal handling code has been tweaked to treat register
7547 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
7548 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
7549 downstream, e.g. in debug-int.lisp, has implicit dependencies
7550 on the unsignedness of integer representation of machine words,
7551 and that caused the system to bomb out with infinite regress
7552 when trying to recover from type errors involving signed values,
7553 e.g. (BUTLAST '(1 2 3) -1).)
7554 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
7555 (This was one of the bugs Peter Van Eynde reported back in July.)
7556 * The system now uses code inspired by Colin Walters' O(N)
7557 implementation of MAP (from the cmucl-imp@cons.org mailing
7558 list, 2 September 2000) when it can't use a DEFTRANSFORM to
7559 inline the MAP operation, and there is more than one
7560 sequence argument to the MAP call (so that it can't just
7561 do ETYPECASE once and for all based on the type of the
7562 single sequence argument). (The old non-inline implementation
7563 of the general M-argument sequence-of-length-N case required
7564 O(M*N*N) time when any of the sequence arguments were LISTs.)
7565 * The QUIT :UNIX-CODE keyword argument has been renamed to
7566 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
7567 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
7569 * Raymond Wiker's patches to port dynamic loading from Linux to
7570 FreeBSD have been added.
7571 * The BUGS file is now more nearly up to date, thanks in large part
7572 to Martin Atzmueller's review of it.
7573 * The debugger now flushes standard output streams before it begins
7574 its output ("debugger invoked" and so forth).
7575 * The core version number and fasl file version number have both
7576 been incremented, because of incompatible changes in the layout
7578 * FINISH-OUTPUT is now called more consistently on QUIT. (It
7579 used to not be called for a saved Lisp image.)
7580 * Martin Atzmueller's version of a patch to fix a compiler crash,
7581 as posted on sbcl-devel 13 September 2000, has been installed.
7582 * Instead of installing Martin Atzmueller's patch for the
7583 compiler transform for SUBSEQ, I deleted the compiler transform,
7584 and transforms for some similar consing operations.
7585 * A bug in signal handling which kept TRACE from working on OpenBSD
7587 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
7588 away by constant folding
7589 * The system now defines its address space constants in one place
7590 (in the Lisp sources), and propagates them automatically elsewhere
7591 (through GENESIS and the sbcl.h file). Therefore, patching the
7592 address map is less unnecessarily tedious and error-prone. The
7593 Lisp names of address space constants have also been systematized.
7594 * CVS tags like dollar-Header-dollar have been removed from
7595 the sources, because they have never saved me trouble and
7596 they've been source of trouble working with patches and other
7597 diff-related operations.
7598 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
7599 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
7601 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
7603 * The system has been ported to OpenBSD.
7604 * The system now compiles with a simple "sh make.sh" on the systems
7605 that it's supported on. I.e., now you no longer need to tweak
7606 text in the target-features.lisp-expr and symlinks in src/runtime/
7607 by hand, the make.sh takes care of it for you.
7608 * The system is no longer so grossly inefficient when compiling code
7609 involving vectors implemented as general (not simple) vectors (VECTOR T),
7610 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
7611 which dares to use the various sequence functions on non-simple
7612 vectors, takes less of a performance hit.
7613 * There is now a primitive type predicate VECTOR-T-P
7614 to test for the (VECTOR T) type, so that e.g.
7615 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
7616 can now be compiled with some semblance of efficiency. (The old code
7617 turned the type declaration into a full call to %TYPEP at runtime!)
7618 * AREF on (VECTOR T) is still not fast, since it's still compiled
7619 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
7620 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
7621 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
7622 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
7623 without making full calls to SUBTYPEP at runtime.
7624 (Some analogous efficiency issues for non-simple vectors specialized to
7625 element types other than T, or for non-simple multidimensional arrays,
7626 have not been addressed. They could almost certainly be handled the
7627 same way if anyone is motivated to do so.)
7628 * The changes in array handling break binary compatibility, so
7629 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
7630 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
7631 instead of (VALUES T T).
7632 * By following the instructions that Dan Barlow posted to sbcl-devel
7633 on 2 July 2000, I was able to enable primitive dynamic object
7634 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
7635 functionality is not implemented (since it calls ld to resolve
7636 library references automatically, requiring RUN-PROGRAM for its
7637 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
7638 try to resolve library references) is now supported.
7639 * The system now flushes the standard output streams when it terminates,
7640 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
7641 them at several other probably-convenient times, e.g. in each pass of
7642 the toplevel read-eval-print loop, and after evaluating a form given
7643 as an "--eval" command-line option. (These changes were motivated by a
7644 discussion of stream flushing issues on cmucl-imp in August 2000.)
7645 * The source transform for TYPEP of array types no longer assumes
7646 that an array whose element type is a not-yet-defined type
7647 is implemented as an array of T, but instead punts, so that the
7648 type will be interpreted at runtime.
7649 * There is now some support for cross-compiling in make.sh: each of
7650 the phases of make.sh has its own script. (This should be transparent
7651 to people doing ordinary, non-cross-compile builds.)
7652 * Since my laptop doesn't have hundreds of megabytes of memory like
7653 my desktop machine, I became more motivated to do some items on
7654 my to-do list in order to reduce the size of the system a little:
7655 ** Arrange for various needed-only-at-cold-init things to be
7656 uninterned after cold init. To support this, those things have
7657 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
7658 symbols with such names are now uninterned after cold init).
7659 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
7660 fasl files for cold load.
7661 ** Remove the old compiler structure pooling code (which used to
7662 be conditional on the target feature :SB-ALLOC) completely.
7663 ** Redo the representation of some data in cold init to be more compact.
7664 (I also looked into supporting byte compiled code at bootstrap time,
7665 which would probably reduce the size of the system a lot, but that
7666 looked too complicated, so I punted for now.)
7667 * The maximum signal nesting depth in the src/runtime/ support code has
7668 been reduced from 4096 to 256. (I don't know any reason for the very
7669 large old value. If the new smaller value turns out to break something,
7670 I'll probably just bump it back up.)
7671 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
7673 * Many, many bugs reported by Peter Van Eynde have been added to
7674 the BUGS list; some have even been fixed.
7675 * While enabling dynamic object file loading, I tried to make the
7676 code easier to understand, renaming various functions and variables
7677 with less ambiguous names, and changing some function calling
7678 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
7679 * While trying to figure out how to do the OpenBSD port, I tried to
7680 clean up some of the code in src/runtime/. In particular, I dropped
7681 support for non-POSIX signal handling, added various comments,
7682 tweaked the code to reduce the number of compilation warnings, and
7683 renamed some files to increase consistency.
7684 * To support the new automatic configuration functionality in make.sh,
7685 the source file target-features.lisp-expr has been replaced with the
7686 source file base-target-features.lisp-expr and the machine-generated
7687 file local-target-features.lisp-expr.
7688 * fixed a stupid quoting error in make.sh so that using CMU CL
7689 "lisp -batch" as cross-compilation host works again
7691 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
7693 * DESCRIBE no longer tries to call itself recursively to describe
7694 bound/fbound values, so that it no longer fails on symbols which are
7695 bound to themselves (like keywords, T, and NIL).
7696 * DESCRIBE now works on generic functions.
7697 * The printer now prints less-screwed-up representations of closures
7698 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
7699 * A private symbol is used instead of the :EMPTY keyword previously
7700 used to mark empty slots in hash tables. Thus
7701 (DEFVAR *HT* (MAKE-HASH-TABLE))
7702 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
7703 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
7704 now does what ANSI says that it should. (You can still get
7705 similar noncompliant behavior if bang on the hash table
7706 implementation with all the symbols you get back from
7707 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
7708 This breaks binary compatibility, since tests for equality to
7709 :EMPTY are wired into things like the macroexpansion of
7710 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
7712 * There's now a minimal placeholder implementation for CL:STEP,
7713 as required by ANSI.
7714 * An obscure bug in the interaction of the normal compiler, the byte
7715 compiler, inlining, and structure predicates has been patched
7716 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
7717 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
7719 * Missing ordinary arguments in a macro call are now detected even
7720 when the macro lambda list contains &KEY or &REST.
7721 * The debugger no longer complains about encountering the top of the
7722 stack when you type "FRAME 0" to explicitly instruct it to go to
7723 the top of the stack. And it now prints the frame you request even
7724 if it's the current frame (instead of saying "You are here.").
7725 * As specified by ANSI, the system now always prints keywords
7726 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
7728 * The default initial SIZE of HASH-TABLEs is now smaller.
7729 * Type information from CLOS class dispatch is now propagated
7730 into DEFMETHOD bodies, so that e.g.
7731 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7733 is now basically equivalent to
7734 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7735 (DECLARE (TYPE SINGLE-FLOAT X))
7737 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
7738 operation, without having to do run-time type dispatch.
7739 * The macroexpansion of DEFMETHOD has been tweaked so that it has
7740 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
7741 * Since I don't seem to be making big file reorganizations very often
7742 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
7743 is overflowing my ability to conveniently back them up), I've finally
7744 checked the system into CVS. (The CVS repository is on my home system,
7745 not at SourceForge -- putting it on SourceForge might come later.)
7746 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
7747 high-level GC-NOTIFY-FOO functions send their output. (There's
7748 still very little control of where low-level verbose GC functions
7749 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
7750 less than it used to -- the GC-NOTIFY-FOO functions are now under
7751 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
7752 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
7753 in only one place in the source code, and propagates it automatically
7754 everywhere that it's needed. Thus e.g. when I bump the version from
7755 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
7756 * The C source files now include boilerplate legalese and documentation
7757 at the head of each file (just as the Lisp source files already did).
7758 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
7759 to his page will be replaced with a link to his new CLiki service.
7761 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
7763 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
7764 * The build process now looks for GNU make under the default name "gmake",
7765 instead of "make" as it used to. If GNU make is not available as "gmake"
7766 on your system, you can change this default behavior by setting the
7767 GNUMAKE environment variable.
7768 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
7769 can build without error under CMU CL.
7771 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
7773 * There is now a partial SBCL user manual (with some new text and some
7774 text cribbed from the CMU CL manual).
7775 * The beginnings of a profiler have been added (starting with the
7776 CMU CL profiler and simplifying and cleaning up). Eventually the
7777 main interface should be through the TRACE macro, but for now,
7778 it's still accessed through vaguely CMU-CL-style functions and macros
7779 exported from the package SB-PROFILE.
7780 * Some problems left over from porting CMU CL to the new
7781 cross-compilation bootstrap process have been cleaned up:
7782 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
7783 instead of SB!XC:DEFMACRO, compounded by an oversight on my
7784 part when getting rid of the compiler *BACKEND* stuff.)
7785 ** The value of *NULL-TYPE* was screwed up, because it was
7786 being initialized before the type system knew the final
7787 definition of the 'NULL type. This screwed up several key
7788 optimizations in the compiler, causing inefficiency in all sorts
7789 of places. (I found it because I wanted to understand why
7790 GET-INTERNAL-RUN-TIME was consing.)
7791 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7792 PROCLAIM FTYPE information. Unfortunately this broke binary
7793 compatibility again, since now the forms output by DEFGENERIC
7794 to refer to functions which didn't exist in 0.6.3.
7795 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7796 can use the new (as of 0.6.3) transform for SOME into MAP into
7798 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7799 values to (INTEGER 0 1000000), so that the time code will no longer
7800 occasionally get blown up by Linux returning 1000000 microseconds
7801 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7802 its output conform to the ANSI spec. (Alas, this makes its output
7803 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7804 * A full call to MAP NIL with a single sequence argument no longer conses.
7805 * fixes to problems pointed out by Martin Atzmueller:
7806 * The manual page no longer talks about multiprocessing as though
7807 it were currently supported.
7808 * The ILISP support patches have been removed from the distribution,
7809 because as of version 5.10.1, ILISP now supports SBCL without us
7810 having to maintain patches.
7811 * added a modified version of Raymond Toy's recent CMU CL patch for
7812 EQUALP comparison of HASH-TABLE
7814 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7816 * The system still can't cross-compile itself with
7817 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7818 entails), but at least it can compile more of itself that way
7819 than it used to be able to, and various buglets which were uncovered
7820 by trying to cross-compile itself that way have now been fixed.
7821 * This release breaks binary compatibility again. This time
7822 at least I've incremented the FASL file format version to 2, so that the
7823 problem can be detected reliably instead of just causing weird errors.
7824 * various new style warnings:
7825 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7826 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7827 ** using the lexical binding of a variable named in the *FOO* style
7828 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7829 as specified by ANSI.
7830 * *RANDOM-STATE* is no longer automatically initialized from
7831 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7832 default behavior of the system is to repeat its behavior every time
7833 it's run. If you'd like to change this behavior, you can always
7834 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7835 old convention there was no comparably easy way to get the system to
7836 repeat its behavior every time it was run.
7837 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7838 FTYPE declarations has been removed, in favor of their ANSI
7839 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7840 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7841 the types of their sequence arguments can be determined at compile time.
7842 This is done through a new open code expansion for MAP which eliminates
7843 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7844 argument types can be determined at compile time.
7845 * The optimizer now transforms COERCE into an identity operation when it
7846 can prove that the coerced object is already of the correct type. (This
7847 can be a win for machine generated code, including the output of other
7848 optimization transforms, such as the MAP transform above.)
7849 * Credit information has been moved from source file headers into CREDITS.
7850 * Source file headers have been made more standard.
7851 * The CASE macro now compiles without complaining even when it has
7854 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7856 * (Note that the way that the PCL macroexpansions were rewritten
7857 to accommodate the change in DEFGENERIC below breaks binary
7858 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7859 not run under sbcl-0.6.2. Once we get out of alpha releases,
7860 i.e. hit release 1.0.0, we'll probably try to maintain binary
7861 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7862 and sbcl-1.4.4. Until then, however, it might be fairly common
7863 for maintenance releases to break binary compatibility.)
7864 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7866 * The reporting of unhandled signals has been changed to print some
7867 explanatory text as well as the report form. (Previously only
7868 the report form was printed.)
7869 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7870 it defines, so that the compiler no longer issues undefined function
7871 warnings for compiled-but-not-yet-loaded generic functions.
7872 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7873 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7874 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7875 section of the ANSI spec are supported.
7876 * The "" nickname for the "KEYWORD" package has been removed.
7877 The reader still handles symbol tokens which begin with a package marker
7878 as keywords, but it doesn't expose its mechanism for doing so in the
7879 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7880 * The system now issues STYLE-WARNINGs for contradictory TYPE
7881 proclamations. (Warnings for contradictory FTYPE proclamations would
7882 be nice too, but those can't be done usefully unless the type system
7883 is made smarter about FUNCTION types.)
7884 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7885 systematized, so that "*target-*.lisp is supposed to exist only on the
7886 target and imply that there's a related file which exists on the
7887 host, and *host-*.lisp is supposed to exist only on the host and imply
7888 that there's a related file which exists on the target. This involves a
7889 lot of renaming. Hopefully the acute confusion caused by the renaming
7890 will be justified by the reduction in chronic confusion..
7891 ** runtime-type.lisp -> early-target-type.lisp
7892 ** target-type.lisp -> late-target-type.lisp
7893 ** early-host-format.lisp -> early-format.lisp
7894 ** late-host-format.lisp -> late-format.lisp
7895 ** host-error.lisp -> misc-error.lisp
7896 ** early-error.lisp -> early-target-error.lisp
7897 ** late-error.lisp -> late-target-error.lisp
7898 ** host-defboot.lisp -> early-defboot.lisp
7899 ** code/misc.lisp -> code/target-misc.lisp
7900 ** code/host-misc.lisp -> code/misc.lisp
7901 ** code/numbers.lisp -> code/target-numbers.lisp
7902 ** code/early-numbers.lisp -> numbers.lisp
7903 ** early-host-type.lisp -> early-type.lisp
7904 ** late-host-type.lisp -> late-type.lisp
7905 ** host-typep.lisp -> typep.lisp
7906 ** load.lisp -> target-load.lisp
7907 ** host-load.lisp -> load.lisp
7908 ** host-disassem.lisp -> disassem.lisp
7909 ** host-insts.lisp -> insts.lisp
7910 ** byte-comp.lisp -> target-byte-comp.lisp
7911 ** host-byte-comp.lisp -> byte-comp.lisp
7912 ** host-signal.lisp -> signal.lisp
7913 ** host-defstruct.lisp -> defstruct.lisp
7914 ** late-target-type.lisp -> deftypes-for-target.lisp
7915 Furthermore, several other previously target-only files foo.lisp (e.g.
7916 hash-table.lisp and random.lisp) have been split into a target-and-host
7917 foo.lisp file and a target-only target-foo.lisp file, with their key type
7918 definitions in the target-and-host part, so that the cross-compiler will
7919 know more about target types.
7920 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7921 gone away. In their place are various *BACKEND-FOO* variables
7922 corresponding to the slots of the old structure.
7923 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7924 into the target SBCL has been fixed.
7925 * The chill.lisp system for loading cold code into a running SBCL
7927 * Support for the CMU CL "scavenger hook" extension has been removed.
7928 (It was undocumented and unused in the CMU CL sources that SBCL was
7929 derived from, and stale in sbcl-0.6.1.)
7930 * Various errors in the cross-compiler type system were detected
7931 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7932 (enabling various consistency checks). Many of them were fixed,
7933 but some hard problems remain, so the compiler is back to
7934 running without *TYPE-SYSTEM-INITIALIZED* for now.
7935 * As part of the cross-compiler type system cleanup, I implemented
7936 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7937 * I have started adding UNCROSS calls throughout the type system
7938 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7939 on cross-compiler input files will be able to go away, and various
7941 * CONSTANTP now returns true for quoted forms (as explicitly required
7944 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7946 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7947 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7948 (MAKE-LIST -1). In the longer term, it ought to become true
7949 that declarations are assertions even at SAFETY 1. For now, it's not
7950 quite true even at SAFETY 3, but it's at least more nearly true..
7951 (Note that this change seems to increases the size of the system by
7952 O(5%) and to decrease the speed of the compiler by 20% or more.)
7953 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7954 for the problem of printing dozens of lines of distracting information
7955 about low-level system machinery as part of the top stack frame
7956 on entry to the debugger when an undefined function was called.
7957 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7958 is not reset to COMMON-LISP-USER.
7959 * Compilation of stuff related to dyncount.lisp has been made conditional
7960 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7961 smaller. The various dyncount-related symbols have been moved into
7962 a new "SB-DYNCOUNT" package.
7963 * tty-inspect.lisp has been renamed to inspect.lisp.
7964 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7965 feature has gone away. (When we eventually port to other flavors of
7966 libc and/or Unix, we'll try to make the differences between flavors
7967 invisible at the user level.)
7968 * Various other *FEATURES* tags, and/or their associated conditionals,
7969 have been removed if obsolescent, or given better documentation, or
7970 sometimes given more-mnemonic names.
7972 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7974 * tidied up "make.sh" script
7975 * tidied up system directory structure
7976 * better "clean.sh" behavior
7977 * added doc/FOR-CMUCL-DEVELOPERS
7978 * many many small tweaks to output format, e.g. removing possibly-confusing
7979 trailing #\. character in DESCRIBE-INSTANCE
7980 * (EQUALP #\A 'A) no longer signals an error.
7981 * new hashing code, including EQUALP hashing
7982 * tidied up Lisp initialization and toplevel
7983 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7984 * command line argument processing
7985 * added POSIX-GETENV function to deal with Unix-ish environment variables
7986 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7987 terminating SBCL on EOF
7988 * non-verbose GC by default
7989 * There is no more "sbcl" shell script; the sbcl file is now the C
7990 runtime executable (just like CMU CL).
7991 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7993 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7994 symbol and package information as Lisp native symbol and package objects
7995 instead of strings naming symbols and strings naming packages. This way,
7996 whenever packages are renamed (as in warm init), debug information is
7997 transformed along with everything else.
7998 * tweaked the optimization policy declarations which control the building
7999 of SBCL itself. Now, among other things, the system no longer saves
8000 source location debugging information. (This helps two problems at once
8001 by reducing SBCL size and by keeping SBCL from trying to look for its
8002 sources -- which may not exist -- when reporting errors.)
8003 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
8004 debugging and testing purposes
8005 * cleaned up printing, making the printer call PRINT-OBJECT for
8006 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
8007 methods, giving nearly-ANSI behavior
8008 * converted almost all special variables to use *FOO* naming convention
8009 * deleted PARSE-TIME functionality, since it can be done portably
8010 * moved some files out of cold init into warm init
8011 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
8013 * regularized formatting of source files
8014 * added an install.sh script
8015 * fixed ridiculous memory usage of cross-compiler by making
8016 compiler/alloc.lisp not try to do pooling unless it can hook
8017 itself into the GC of the cross-compilation host. Now the system
8018 builds nicely on my old laptop.
8019 * added :SB-ALLOC in target-features.lisp-expr
8020 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
8021 was not implemented)
8022 * re-did condition handling and note reporting in the compiler. Notes
8023 are no longer handled by signalling conditions. Style warnings
8024 and warnings are handled more correctly and reported in such a way
8025 that it's easy to find one or the other in your output (so that you
8026 can e.g. figure out which of many problems caused COMPILE-FILE to
8028 * changed the severity of several compiler warnings from full WARNING
8029 to STYLE-WARNING in order to conform with the ANSI spec; also changed
8030 compiler note reporting so that it doesn't use the condition system
8031 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
8032 COMPILE-FILE command)
8033 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
8034 function. As a consequence, START-BLOCK and END-BLOCK declarations are
8035 no longer supported, since their implementation was deeply intertwingled
8036 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
8037 * removed bogus "support" for compiler macros named (SETF FOO), and
8038 removed the compiler macro for SETF INFO (but only after making a fool
8039 of myself on the cmucl-imp mailing list by posting a bogus patch for
8040 DEFINE-COMPILER-MACRO..)
8041 * Compiled files containing forms which have side effects on the Lisp
8042 reader (such as DEFPACKAGE forms) are now handled more correctly.
8043 (Compiler queuing of top level lambdas has been suppressed by setting
8044 *TOP-LEVEL-LAMBDA-MAX* to 0. )
8045 * deleted various currently-unused source files, e.g. gengc.lisp. They
8046 may be added back at some point e.g. when porting to other architectures,
8047 but until they are it's distracting to distribute them and to try to
8049 * deleted "UNCROSS couldn't recurse through.." style warnings, since
8050 there were so many of them they're just distractions, and UNCROSS is
8051 known to be able to handle the current sources
8052 * moved PROFILE functionality into TRACE, so that it will be clear
8053 how the wrapping and unwrapping of functions when you profile them
8054 interacts with the wrapping and unwrapping of functions when you
8055 trace them. (Actually, the functionality isn't there yet, but at least
8056 the interface specification is there. Hopefully, the functionality will
8057 arrive with some future maintenance release.)
8058 * removed host-oops.lisp
8059 * changed signature of QUIT function to allow UNIX-CODE argument
8060 * fixed READ-SEQUENCE bug
8061 * tweaked verbose GC output so that it looks more like the progress
8062 output that ANSI specifies for functions like LOAD
8063 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
8064 * added <http://sbcl.sourceforge.com> to the banner information printed by