1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.4.0:
3 * optimization: faster foreign callbacks.
4 * enhancement: complex arrays can be stack allocated.
5 * optimization: the register allocation method used by the compiler when
6 optimizing for speed is now faster for functions with large bodies.
7 * bug fix: SB-INTROSPECT:ALLOCATION-INFORMATION works on big-endian CPUs
8 (fixes lp#490490 for real rather than by disabling a test)
9 * bug fix: code objects and bignums of large enough size to be placed
10 on GC pages without any other object no longer cause accidental copying
11 during garbage collection. (gencgc only)
12 * bug fix: sb-fasteval failure with 0-argument lambdas (lp#1722715)
13 * bug fix: RUN-PROGRAM doesn't leak handles on win32 and PROCESS-CLOSE
14 doesn't crash. (lp#1724472)
16 changes in sbcl-1.4.0 relative to sbcl-1.3.21:
17 * minor incompatible change: DESTRUCTURING-BIND treats non-toplevel () as
18 nested empty pattern. This seems to be what the standard mandates, so
19 conforming code should not be affected.
20 * ehancement: (GC :GEN 7) with gencgc will zero-fill dead pseudo-static
21 objects so that they do not spuriously cause reachability of objects that
22 would have been otherwise dead.
23 * enhancement: PROCESS-STATUS now tracks stopped and continued processes
24 properly (also fixes lp#1624941, based on patch by Elias Pipping).
25 * bug fix: INSPECT handles errors signaled while printing slot
27 * bug fix: DESCRIBE works on classes like it used to.
28 * bug fix: *LOAD-PATHNAME* and *LOAD-TRUENAME* are bound to pathnames
29 when processing a sysinit or userinit file
30 * bug fix: save-lisp-and-die is able to collect more garbage on non-x86oid
32 * bug fix: fixed out-of-bounds array read in optimized POSITION on bit-vectors
33 * bug fix: signal emulation respects the 128-byte stack red zone on x86-64
36 changes in sbcl-1.3.21 relative to sbcl-1.3.20:
37 * minor incompatible change: the CLOBBER-IT restart for defstruct redefintion
38 has been removed after a 15 year deprecation cycle. Use the new name,
39 RECKLESSLY-CONTINUE. Note also that this restart is hidden if deemed unsafe
40 due to altered placement of untagged slots in the structure.
41 * enhancement: the assignment of -DSBCL_PREFIX= in src/runtime/GNUmakefile
42 can be removed as a local patch, which results in an sbcl executable
43 that finds its core file relative to itself by looking in "../lib/sbcl".
44 * enhancement: backends using the generational GC are able to relocate
45 dynamic space anywhere the operating system places it.
46 This feature can be disabled by removing :relocatable-heap from the
47 build configuration. Not supported on Windows.
48 * enhancement: DEFMETHOD no longer signals IMPLICIT-GENERIC-FUNCTION-WARNING.
49 * enhancement: better type conflict detection for high order functions, e.g.
50 (find x "123" :test #'=)
51 * enhancement: the tabular output of ROOM is aligned dynamically, preventing
52 misaligned tables for larger sizes or counts.
53 * enhancement: ROOM reports on immobile space if applicable.
54 * optimization: optimized external-format routines.
55 * bug fix: SB-INTROSPECT:ALLOCATION-INFORMATION returns :IMMOBILE
56 instead of :FOREIGN for objects in immobile space.
57 * bug fix: dotted lists in special forms and function call forms signal
59 * bug fix: EQUALP hash tables with pathname keys now ignore internal slots.
60 (lp#1712944, reported by Jason Miller)
62 changes in sbcl-1.3.20 relative to sbcl-1.3.19:
63 * minor incompatible change: DEF{GENERIC,METHOD} no longer accept some
64 illegal lambda lists such as (defgeneric bar (foo &key foo)) or
65 (defgeneric baz (t)) that were accepted before.
66 * optimization: a valueless &AUX binding in a BOA constructor does not
67 force all slots reads in safe code to perform a full type check.
68 * optimization: ATOMIC-PUSH and ATOMIC-POP generate better code
69 * bug fix: the low-level debugger would erroneously print - or not print
70 as the case may be - "(bad-address)" for some objects depending whether
71 the --dynamic-space-size argument was used at Lisp startup
72 * bug fix: a DEFCONSTANT with a non non-eql-comparable object as the value
73 could cause miscompilation if that constant appeared as the default
74 expression for an &OPTIONAL binding
75 * bug fix: generic function lambda lists are now checked for repeated
76 and otherwise illegal entries. (lp#1704114)
77 * bug fix: setting gencgc_verbose = 1 could cause deadlock in fprintf()
78 depending on the platform's stdio implementation. The relevant code
79 has been changed to use snprintf() and write() instead.
81 changes in sbcl-1.3.19 relative to sbcl-1.3.18:
82 * enhancement: specialized arrays can be printed readably without using
84 * enhancement: SB-DEBUG:PRINT-BACKTRACE truncates huge string arguments.
85 The full string remains available for inspection via (SB-DEBUG:ARG).
86 * bug fix: backtracing from several threads at once could fail
87 * bug fix: floating-point infinities could not be used as keys
88 in EQUALP hash tables. (lp#1696274)
89 * bug fix: random sb-fasteval failures. (lp#1642708)
90 * bug fix: align the stack in callback wrappers to defend against C
91 compiler over-aggressive use of SIMD. (lp#1697528)
92 * bug fix: don't try to find the class when reporting that a class does
93 not exist for a primitive type. (lp#1697226)
95 changes in sbcl-1.3.18 relative to sbcl-1.3.17:
96 * minor incompatible change: existing values of CFLAGS, ASFLAGS,
97 CPPFLAGS, and LINKFLAGS will be incorporated into C compiler
98 invocations when building from source.
99 * minor incompatible change: the result of WRITE-TO-STRING may be
100 a BASE-STRING if all characters written are of type BASE-CHAR.
101 * minor incompatible change: the broadcast stream with no output
102 streams is a singleton object. That object satisfies OPEN-STREAM-P
103 regardless of how many times CLOSE is invoked on it.
104 * enhancement: x86[-64] backends contain an experimental feature
105 which aids in demonstrating reachability of any object starting
106 from a tenured object or a thread stack by producing a proof
107 as a sequence of pointers to follow.
108 The file "tests/traceroot.test.sh" contains an example usage.
109 * enhancement: if the alien symbol "gc_coalesce_string_literals" is
110 set to 1 prior to SAVE-LISP-AND-DIE, then similar string constants
111 loaded from different fasl files may be collapsed to one object.
112 If the variable is set to 2, then additionally strings which are
113 STRING= in code resulting from COMPILE can be coalesced.
114 For instance, two functions returning the literal string "HI"
115 might return EQ strings after collapsing, which may be undesired
116 in a particular use. The flag pertains to gencgc only.
117 * enhancement: SXHASH values on pathnames are better distributed
118 * bug fix: MAKE-PATHNAME removes empty strings as components of a
119 directory, as is permitted: "Whenever a pathname is constructed
120 the components may be canonicalized if appropriate."
121 * optimization: various printer and FORMAT performance enhancements.
122 * bug fix: GET-FOREGROUND no longer fails in case all other interactive
123 threads exit (lp#1682671, reported by Syll)
124 * bug fix: RELEASE-FOREGROUND always removes the current thread from the
125 list of interactive threads. (lp#1682867, reported by Syll)
127 changes in sbcl-1.3.17 relative to sbcl-1.3.16:
128 * enhancement: memory overhead from the garbage collector's metadata
129 is reduced on 64-bit architectures; no change for 32-bit.
130 * enhancement: further garbage collector speedups affecting
131 pinned objects on conservative backends, and simple-vectors.
132 * enhancement: on Linux a custom handler for SIGSEGV can be called
133 for page faults outside of dynamic space by changing the C symbol
134 "sbcl_fallback_sigsegv_handler".
135 * bug fix: sb-cover does not lose source positions for AND/OR/COND.
136 * bug fix: random disassembler failures. (lp#1527931)
137 * The bundled sb-md5 contrib has been updated to release 2.0.4
138 which is licensed under Creative Commons CC0 per author's statement
139 https://github.com/pmai/md5/commit/fd134e71b71a10ab78905833a7cb9d4d6817c589
140 (Refer to NEWS and COPYING in the contrib/sb-md5 subdirectory)
142 changes in sbcl-1.3.16 relative to sbcl-1.3.15:
143 * optimization: various small tweaks give around 5% faster garbage
145 * bug fix: better detection of when an impossible code path does
146 not need a warning. (lp#1668619)
147 * bug fix: stronger attempts to disable position-independent
148 executable building. (lp#1668986, patch from Mark Wright)
149 * bug fix: OPEN :IF-EXISTS NIL signalled a condition on Windows.
150 (lp#1674437, reported by Jan Idzikowski)
152 changes in sbcl-1.3.15 relative to sbcl-1.3.14:
153 * minor incompatible change: the reader will when feasible create
154 new symbols using a BASE-STRING for the print name. Additionally,
155 string literals can favor the base-string type if desired, though
156 the default is to always return UTF-32 strings for compatibility.
157 A preference for base-string does not disable reading Unicode.
158 The choice is controlled via (SETF READTABLE-BASE-CHAR-PREFERENCE).
159 If Unicode was disabled at build time, this setting does nothing.
160 * enhancement: SBCL generates more debug information by default.
161 * enhancement: type errors provide context information, such as which
162 variable is being bound, which slot of which structure is being set.
163 * enhancement: if #+immobile-symbols is in build-time *FEATURES* (not
164 enabled by default), then symbols will never be moved in memory
165 except by SAVE-LISP-AND-DIE. Immobility has helpful implications for
166 code generation as well as interaction with foreign routines.
167 This feature can only be enabled if #+immobile-space is enabled.
168 * enhancement: undefined function errors can be restarted on x86-64, to
169 either retry calling the function again or call a user supplied function.
170 * enhancement: sb-ext:restrict-compiler-policy accepts an upper bound in
171 addition to a lower bound.
172 * enhancement: #+immobile-code improves the speed of function calling.
173 Some delay may be noticed when redefining an existing function
174 from a saved core file however.
175 * defaults change: sb-ext:*disassemble-annotate* default to NIL, due to its
177 * new feature: SB-LINKABLE-RUNTIME, allowing linking with extra object
178 files to help with delivery of executables. (Thanks to François-René
180 * bug fix: data race in GENTEMP fixed - it can no longer return the
181 same interned symbol to multiple threads if called concurrently
182 * bug fix: interrupting LOADing of FASLs does not leave functions without
183 source locations. (lp#540276)
184 * bug fix: DYNAMIC-EXTENT-declared results of NOTINLINE local functions were
185 treated as if they were actually stack allocated (lp#1659964)
186 * bug fix: correctly handle the case of a non-local exit within a function
187 terminating the extent of dynamic-extent, dynamic-bound variables in the
188 presence of multiple-values (lp#1655011)
189 * bug fix: handling of SB-SYS:WITH-PINNED-OBJECTS in the interpreters (both
190 sb-eval and sb-fasteval) now actually pins objects on gencgc.
191 * bug fix: AVX registers are preserved during exceptions on x86-64 macOS.
192 * bug fix: (directory "SOMETHING/*/**/MORE") is no longer equivalent to
193 (directory "SOMETHING/**/MORE")
194 * bug fix: better console IO on Windows (lp#1660906)
196 changes in sbcl-1.3.14 relative to sbcl-1.3.13:
197 * minor incompatible change: the SB-PCL walker no longer recognizes
198 macros expanding into a DECLARE expression. This is not a language change,
199 since ANSI forbids such usage (X3J13 issue DECLARE-MACROS:FLUSH).
200 * enhancement: for several macros such as MULTIPLE-VALUE-{BIND,SETQ}, COND,
201 DO{,*,LIST}, {RESTART,HANDLER}-{BIND,CASE}, *CASE, conditions signaled
202 during macroexpansion point to the form that caused the problem more
204 * enhancement: the "--noinform" command-line option inhibits output from
205 save-lisp-and-die in addition to removing the startup banner.
206 * bug fix: PROCESS-KILL failed to return errno if the system call failed
207 * optimization: slightly more comprehensive treatment of the keyword
208 arguments to MAKE-ARRAY in compiler transformations.
210 changes in sbcl-1.3.13 relative to sbcl-1.3.12:
211 * enhancement: SET triggers package locks on undefined variables.
213 * enhancement: new Windows specific option to run-program, :escape-arguments
215 * enhancement: recompiling a MAKE-INSTANCE form with an initarg :INITARG
216 CONSTANT where CONSTANT names a constant variable picks up the new value
217 of CONSTANT in case it has been redefined. (lp#1644944)
218 * optimization: faster TYPEP on undefined at compile-time types and upcoming
219 class definitions. (lp#1082967)
220 * optimization: memory consumption of each STANDARD-OBJECT instance is
221 reduced by 2 words if the compact-instance-header feature is enabled.
222 * optimization: CONDITION instances are quicker to allocate.
223 * optimization: unoptimized calls to FILL on specialized vectors are now
224 just as fast as T vectors.
225 * bug fix: get-timezone returns corret DST on 64-bit Windows. (lp#1641058)
226 * bug fix: cross reference information in fasls is no longer incompatible
227 between different cores (lp#1648186)
229 changes in sbcl-1.3.12 relative to sbcl-1.3.11:
230 * enhancement: on x86-64, compiled functions loaded from fasl files
231 can not be moved, but can be freed, by GC. Additionally, COMPILE will
232 produce immobile code if SB-C::*COMPILE-TO-MEMORY-SPACE* is set to
233 :IMMOBILE. (Caution: the flag is experimental and subject to change.)
234 The benefits are better physical separation of code from data,
235 and potentially easier examination of live images by external tools.
236 * enhancement: the docstring for SAVE-LISP-AND-DIE has been amended to
237 say that the :ROOT-STRUCTURES parameter is not meaningless on gencgc,
238 depending on the platform.
239 * bug fix: calling a named function (e.g. a DEFUN) concurrently with
240 redefining that same function could lead to execution of random bytes.
241 * bug fix: yes-or-no-p accepts formatter functions (lp#1639490)
242 * bug fix: better handling of exceptions on macOS.
244 changes in sbcl-1.3.11 relative to sbcl-1.3.10:
245 * minor incompatible change: SB-EXT:*INTEXP-MAXIMUM-EXPONENT* is removed.
246 * enhancement: TRACE ... :REPORT {TRACE,NIL} now work as advertised in the
247 documentation string (based on patch by Patrick Stein)
248 * enhancement: support unboxed signed-word structure slots on x86, x86-64
249 and ARM64. (lp#377616)
250 * optimization: faster logical bit-array operations on multidimensional
252 * optimization: better GC performance in the presence of many threads.
253 (patch by Ilya Perminov, lp#1339924)
254 * optimization: multiple-value-call is optimized with multiple argument
255 forms, not just one. (lp#753803)
256 * bug fix: MAKE-ALIEN-STRING returns the number of allocated bytes as a
257 second value as advertised (reported by Johann 'Myrkraverk' Oskarsson)
258 * bug fix: when TO-READTABLE is supplied to COPY-READTABLE, it will
259 contain only the macros in FROM-READTABLE and no others. (lp#1631506)
260 * enhancement: gencgc has been modified for x86-64 on Linux and macOS
261 to a support mark-and-sweep as well as the traditional copying strategy.
262 It is conceivable that some applications might be adversely affected.
263 Please see ':immobile-space' in 'base-target-features.lisp-expr'
264 for further details, and possible reasons to disable this feature.
265 * enhancement: x86-64 supports shrinking the fixed overhead in a structure
266 from 2 words to 1 word, reducing memory consumption in applications
267 which create many small structures.
269 changes in sbcl-1.3.10 relative to sbcl-1.3.9:
270 * enhancement: more compact low-level error signaling code
271 * enhancement: more compact encoding of cross-reference information
272 * optimization: faster out of line fixnum-float comparisons.
273 * optimization: filling a known simple-vector with a constant value
274 is about as fast in unoptimized code as in code compiled with (SPEED 3),
275 and the x86-64 implementation is able to use SSE instructions.
276 * bug fix: correctly handle the case of a non-local exit within a function
277 terminating the extent of dynamic-extent functions and variables in the
278 presence of multiple-values (lp#1563127)
279 * bug fix: restore builds on the latest OSX with the latest Xcode
282 changes in sbcl-1.3.9 relative to sbcl-1.3.8:
283 * minor incompatible change: NAMESTRING prefers to return a BASE-STRING
284 instead of (ARRAY CHARACTER (*)) when possible.
285 * enhancement: cached make-instance/allocate-instance constructors can now
286 get garbage collected.
287 * optimization: better performance for some unoptimized operations on
289 * bug fix: using the options :LOCAL-NICKNAMES and :LOCK in the same
290 DEFPACKAGE form no longer signals a bogus error
292 changes in sbcl-1.3.8 relative to sbcl-1.3.7:
293 * minor incompatible change: the system now understands that the CONDITION
294 type is disjoint with many other system types.
295 * minor incompatible change: argument types in condition report functions
296 are now declared (in combination with the above change, this can result in
297 early detection of erroneous code).
298 * enhancement: simple arrays of any rank can be stack-allocated
299 on platforms supporting stack allocation of vectors.
300 * optimization: improved type derivation for FIND, POSITION, COUNT, SEARCH,
301 MISMATCH and other array and sequence functions.
302 * optimization: ALLOCATE-INSTANCE is now as fast as MAKE-INSTANCE.
303 * optimization: more efficient CHANGE-CLASS.
304 * bug fix: versions of getresuid() and getresgid() in SB-POSIX no longer
305 cause memory faults, and should work properly (lp#1603806, reported by
307 * bug fix: handle ENOENT from getprotobyname() (lp#1596043, reported by
310 changes in sbcl-1.3.7 relative to sbcl-1.3.6:
311 * bug fix: preserve the name of the destructive function for the destroyed
312 constant and important result warnings, even when declared NOTINLINE.
313 * optimization: faster operations on list-sets.
314 * optimization: better type derivation of set functions.
316 * optimization: load-time TLS-INDEX assignment, and other
317 microoptimizations, on x86.
323 ** REMOVE, REMOVE-DUPLICATES, DELETE and DELETE-DUPLICATES on lists.
325 changes in sbcl-1.3.6 relative to sbcl-1.3.5:
326 * bug fix: do not insert conditional newlines in print-unreadable-object
327 (lp#1398290). This reverses a change made in lp#488979 which reversed
328 a fix advertised in release 0.8.14 to pass the GCL ANSI Test Suite.
329 * bug fix: constant negative rotations of 32-bit quantities are compiled
330 correctly on x86-64 and arm. (lp#1586614, reported by Guillaume Le
333 changes in sbcl-1.3.5 relative to sbcl-1.3.4:
334 * enhancement: the platform's strtod() is exposed as SB-POSIX:STRTOD
335 * enhancement: speed up debug info creation for highly nested functions.
337 * enhancement: the interleaved structure slot optimization from
338 release 1.2.6 has been ported to all architectures.
339 * enhancement: support run-program I/O redirection into lisp streams on
341 * bug fix: better wording in missed optimization note. (lp#1003265)
342 * bug fix: interpreted (CAS SVREF) was broken
343 * bug fix: support CLISP as build host for ARM (lp#1568256, thanks to Tomas
346 changes in sbcl-1.3.4 relative to sbcl-1.3.3:
347 * enhancement: who-sets and who-references work on DEFGLOBAL. (lp#1552997)
348 * enhancement: CONSTANTP understands backquote.
349 e.g. (CONSTANTP '`(0 (,CHAR-CODE-LIMIT))) => T
350 * optimization: improvements to sequence functions: CONCATENATE, SUBSTITUTE,
352 * bug fix: SB-EVAL does not signal an error for (THE KEYWORD :FOO)
353 * bug fix: a DEFTYPE name that is redefined into a DEFSTRUCT name
354 is less likely to cause confusion in the compiler.
355 * bug fix: DOCUMENTATION works as intended for classes with non-standard
357 * bug fix: (TYPEP <extended-sequence> <extended-sequence-class>) no longer
358 returns NIL in certain situations
359 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE accept class objects as
361 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE expand DEFTYPEs in
364 changes in sbcl-1.3.3 relative to sbcl-1.3.2:
365 * enhancement: warn about argument mismatch for functions passed as
366 arguments to other functions (e.g. REDUCE, MAP) at compile-time.
367 * optimization: functions accepting other functions (e.g. REDUCE, FIND) can
368 now be constant-folded if all function arguments are declared as foldable.
369 * optimization: improved logical operations on integers of unknown type.
370 * bug fix: exception handling no longer leaks memory on OS X. (lp#326238)
372 changes in sbcl-1.3.2 relative to sbcl-1.3.1:
373 * enhancement: {READ,WRITE}-SEQUENCE are much faster for some combinations
374 of short sequences and stream types
375 * enhancement: MAKE-LIST's result can be stack-allocated on x86-64
376 * bug fix: WRITE-SEQUENCE no longer fails to write lists containing integers
378 * bug fix: LOGTEST (and hence ODDP) no longer conses when given fixnum
379 arguments and small bit positions. (lp#1277690)
380 * bug fix: READ-FROM-STRING compiler-macro does not permute its arguments
381 * bug fix: DEFUN of a function name that collides with a system-generated
382 structure accessor does not confuse the runtime. (lp#540063)
383 * bug fix: heap corruption from miscompiled RESTART-BIND. (lp#1530390)
385 changes in sbcl-1.3.1 relative to sbcl-1.3.0:
386 * enhancement: SB-THREAD support for ARM64.
387 * enhancement: compiling an out-of-line DEFSTRUCT constructor call
388 will warn if a defaulted value is incompatible with its slot type.
389 * enhancement: a local INLINE declaration on a structure constructor
390 will work as intended, subject to any other factors that inhibit
391 inlining, even if the DEFSTRUCT was not itself within a global
392 INLINE proclamation for the named constructor
393 * enhancement: SB-EXT:DYNAMIC-SPACE-SIZE is now defined for cheneygc.
394 * enhancement: x86[-64] platforms support SB-EXT:CAS on structure slots
396 * enhancement: the interleaved structure slot optimization from
397 release 1.2.6 has been ported to 32-bit x86, Sparc, PowerPC, ARM64.
398 * enhancement: SB-THREAD:JOIN-THREAD signals a proper error when an attempt
399 is made to join the current thread
400 * bug fix: NTH-VALUE does not cause stack overflow. (lp#1511419)
401 * bug fix: structure constructor type checking is better. (lp#1508735)
402 * bug fix: supplied-p variables for unused optional or keyword variables no
403 longer confuse SB-DI:PARSE-COMPILED-DEBUG-FUN-LAMBDA-LIST (and thus the
404 backtrace machinery) (lp#1498644)
405 * bug fix: Backtrace correctly handles undefined-function frames on MIPS.
406 * bug fix: WITH-FLOAT-TRAPS-MASKED correctly clears accrued traps on MIPS
407 (fixes issues with floating-point type derivation in the compiler).
408 * bug fix: FLOAT-NAN-P and FLOAT-TRAPPING-NAN-P now work correctly on MIPS
410 * bug fix: MIPS context register access now masks to 32 bits (fixing issues
411 parsing negative-fixnum values for internal-error arguments and escaped
412 debug variables on 64-bit CPUs).
413 * bug fix: (SETF SAP-REF-DOUBLE) with constant offset on big-endian MIPS
415 * bug fix: Callback parameter (argument) handling on MIPS is now vastly
417 * bug fix: %DECREMENT-SEMAPHORE adjusts the remaining timeout after a
420 changes in sbcl-1.3.0 relative to sbcl-1.2.16:
421 * minor incompatible change: the environment passed to a macro/setf/deftype
422 expander is not always an object of type SB-KERNEL:LEXENV.
423 It can be nil, as is permissible by the standard.
424 * enhancement: ported to ARM64 Linux.
425 * enhancement: a new interpreter is included which has many benefits
426 over sb-eval. It is disabled by default. See src/interpreter/README
427 for instructions to enable it, and further details.
428 * bug fix: calling COMPILE when SB-EXT:*EVALUATOR-MODE* was :INTERPRET
429 would fail to perform "normal semantic processing such as macro expansion"
430 as stipulated by X3J13 issue LOAD-TIME-EVAL.
431 * bug fix: SB-UNICODE:CONFUSABLE-P no longer treats "<" and the empty
432 string as confusable. (lp#1504739)
433 * bug fix: (ASSERT (COMPUTE-IT ...)) would expand incorrectly
434 if COMPUTE-IT was a local macro that shadowed a global function.
435 * bug fix: SB-POSIX:CFSETISPEED and SB-POSIX:CFSETOSPEED now work properly
436 on platforms that use only the minimum specified set of fields in struct
437 termios (verified on Linux, still known not to work on FreeBSD and NetBSD,
438 very probably others). (partial fix for lp#1500951)
440 changes in sbcl-1.2.16 relative to sbcl-1.2.15:
441 * enhancement: by default, timers with a repeat interval do not "catch up"
442 by repeatedly calling their function after a clock discontinuity such as a
443 suspend and resume cycle
444 * bug fix: correctly restore multiple values on the stack in the presence of
445 alien calls. (lp#1489590)
446 * bug fix: MAKE-STRING-OUTPUT-STREAM enforces that :ELEMENT-TYPE
447 is a subtype of CHARACTER.
448 * bug fix: an EQL method specializer no longer causes garbage retention
449 if there are no extant methods using the specializer. (lp#492851)
451 changes in sbcl-1.2.15 relative to sbcl-1.2.14:
452 * new feature: DEPRECATION declaration for functions, variables and types
453 causes {EARLY,LATE,FINAL}-DEPRECATION-WARNING to be signaled when subject
454 of the declaration is used. Integrated with DESCRIBE, DOCUMENTATION and
455 SB-CLTL2:{VARIABLE,FUNCTION}-INFORMATION. Documented in the "Deprecation"
456 section of the manual.
457 * enhancement: ASDF updated to 3.1.5. (lp#1476867)
458 * enhancement: definitions within PROGN get proper source locations when
459 compiled (needs latest Slime to take advantage of this). (lp#1473147)
460 * enhancement: source locations for DEFCLASS slots now point directly to the
461 slot definitions, not the whole DEFCLASS form.
462 * bug fix: better source location in the presence of quoted forms.
464 * bug fix: better source locations inside backqoute. (lp#1361502)
465 * bug fix: HANDLER-BIND requires that the handler-function be
466 a function designator at the time of binding establishment. (lp#1480679)
467 * bug fix: inlined functions surrounded by nested macrolets are properly
470 changes in sbcl-1.2.14 relative to sbcl-1.2.13:
471 * minor incompatible change: The name of a compiled anonymous lambda
472 as returned by the third value of FUNCTION-LAMBDA-EXPRESSION can have
473 a lambda-list-like list following the introductory LAMBDA that is not
474 in general a syntactically valid lambda list. Specifically, it won't
475 retain default values, supplied-p variables, or &KEY or &AUX bindings.
476 * enhancement: DESTRUCTURING-BIND has been totally reimplemented from
477 scratch to address a handful of performance and correctness issues.
478 Some minor behavioral differences exist regarding order of evaluation
479 of default forms for unsupplied &OPTIONAL and &KEY arguments
480 when nested destructuring patterns are involved.
481 (lp#707556, lp#707573, lp#707578, lp#708051)
482 * enhancement: DEFCONSTANT and DEFSTRUCT respect package locks. (lp#1186238,
484 * enhancement: sb-unicode:normalize-string has a new optional argument,
485 FILTER, a callback which controls which decomposed characters are
486 collected. Useful for stripping away diacritics more efficiently.
487 * bug fix: (TYPE-OF ARRAY) for a non-simple array is subject to change
488 after a call of ADJUST-ARRAY. (lp#1333731)
489 * bug fix: Dynamic-extent allocation with a loop between allocating a value
490 and the start of its environment no longer discards the allocated data
491 when the loop is taken. (lp#1472785)
492 * bug fix: Variable-reference elimination no longer generates incorrect code
493 under certain circumstances. (lp#1446891)
494 * bug fix: variables with EQL types are no longer treated as constants by
495 VOPs, which caused problems with closures being allocated for such
496 variables, but they remained unused. (lp#1390149)
497 * bug fix: Windows installer generates registry key name
498 correctly. (lp#1476447)
500 changes in sbcl-1.2.13 relative to sbcl-1.2.12:
501 * incompatible change: on success, TRY-SEMAPHORE and WAIT-ON-SEMAPHORE
503 * enhancement: WAIT-ON-SEMAPHORE accepts a decrement parameter
504 * enhancement: JOIN-THREAD allows distinguishing timeout vs. abort in all
506 * enhancement: On Windows DBG_PRINTEXCEPTION_C is handled and its message is
507 printed. (lp#1437947)
508 * bug-fix: TRUENAME works properly on broken symlinks presented as
509 directories. (lp#1400003)
510 * bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with left-to-right
511 order of argument evaluation. (lp#1458190)
512 * bug fix: (SETF (LDB (BYTE 1 2 JUNK) X) 0) is rightly rejected.
513 * bug fix: DEFSETF lambda lists should not permit argument destructuring.
514 * bug fix: calls to (SETF SLOT-VALUE) on a missing slot would in certain
515 situations incorrectly return the result of a SLOT-MISSING method
516 instead of always returning the new value. (lp#1460381)
517 * bug fix: a DEFMACRO occurring not at toplevel and capturing parts of
518 its lexical environment (thus being a closure) caused expressions
519 involving the macro name to cause corruption in the pretty-printer
520 due to faulty introspection of the lambda list of a closure.
521 * bug fix: out of line MAP/MAP-INTO check that the results produced by the
522 function are of the matching sequence type. (lp#1459581)
523 * bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled correctly.
525 changes in sbcl-1.2.12 relative to sbcl-1.2.11:
526 * minor incompatible change: the SB-C::*POLICY* variable is no longer
527 a list. Code which manipulated it as such (including but not limited
528 to non-bundled releases of ASDF) will need to be revised.
529 * enhancement: The input stream for COMPILE-FILE implements
531 * enhancement: EVAL errors that occur by way of LOAD report the starting
532 line and column number of the erring toplevel form. (lp#565247)
533 * optimization: better MAP and MAP-INTO on known vector result types.
534 * bug fix: Read/modify/write macros accessing a place which is a
535 composition of CAR+CDR operations, such as (SHIFTF (CADR X) (ELT V 0)),
536 do not access subforms more than once. (lp#1450968)
537 * bug fix: short form of DEFSETF no longer allows trailing junk.
538 * bug fix: DEFINE-MODIFY-MACRO respects the provisions of CLHS 5.1.3
539 regarding argument evaluation order. (lp#1452539)
540 * bug fix: POP works as specified in CLHS if the setter for its
541 argument has a side-effect on the existing CAR value. (lp#1454021)
542 * bug fix: Reading "#()" with a positive numeric argument signals a
543 reader error. As specified, reading "#1()" has undefined consequences,
544 so correct portable code should be indifferent to this. (lp#1252100)
545 * bug fix: Malformed reader conditionals such as "(#-no-such-feature)"
546 and "(#+sbcl)" no longer parse as NIL. (lp#1454400)
548 changes in sbcl-1.2.11 relative to sbcl-1.2.10:
549 * enhancement: SET-PPRINT-DISPATCH will warn when given an expression in
550 which any part is unrecognizable as a legal type-specifier.
551 The dispatch table will be altered, but the new entry is disabled.
552 Subsequent type-defining forms will cause pprint-dispatch tables to
553 re-examine whether any disabled entries should be enabled. (lp#1429520)
554 * enhancement: Loading code containing calls to a deprecated function will,
555 under most circumstances, signal warnings similar to compiling such code.
556 The usual caveat holds about not detecting calls through a computed name,
557 as in (funcall (intern "DEPRECATED-FUN" "SB-EXT")).
558 * enhancement: (SB-EXT:COMPILE-FILE-LINE) is a new macro that expands
559 to a constant (VALUES integer integer) indicating the source line/column
560 from which it was read, intended for logging Lisp runtime errors in
561 a style similar to that afforded by the C preprocessor __LINE__ macro.
562 Similarly (SB-EXT:COMPILE-FILE-POSITION) returns a position in characters.
563 * enhancement: improved source locations for VOPs, alien types and
565 * bug fix: functions in :FINAL deprecation have the correct docstring.
566 No visible change, as no such functions presently exist. (lp#1439151)
567 * bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an error
568 if OTHER names either a macro or special-operator. (lp#1439921)
570 changes in sbcl-1.2.10 relative to sbcl-1.2.9:
571 * minor incompatible change: all SOCKINT::WIN32-* functions have been
572 deprecated with EARLY deprecation state
573 * minor incompatible change: performing introspection via the system-internal
574 SB-INT:INFO function could expose that :TYPE :TRANSLATOR is not necessarily
575 a function, as it always was before. (Affects swank-fancy-inspector)
576 * enhancement: The value of SXHASH on bit-vectors of length equal to the
577 word size now depends on the vector's contents instead of being constant;
578 its value on bit-vectors of length divisible by the word size now depends
579 also on the contents of the vector's last word.
580 * bug-fix: sb-bsd-sockets on win32 uses proper C function declarations.
582 * bug fix: A new dead code elimination phase removes dead code loops
583 that confuse stack analysis. (lp#1255782, lp#308914)
584 * bug fix: A toplevel form which was simple enough to bypass the main
585 compiler in COMPILE-FILE, and which contained an empty SETQ or PROGN
586 would produce an invalid fasl file. (lp#1427050)
587 * bug fix: The compiler no longer signals an internal error when
588 encountering invalid FUNCTION forms like (function 1)
589 * bug fix: express proper dependencies in the ASDF contrib, to support
590 systems where make runs in parallel. (lp#1434768; thanks to Nikhil
593 changes in sbcl-1.2.9 relative to sbcl-1.2.8:
594 * minor incompatible change and bug fix: unboxed numeric constants
595 on x86oids are arranged in memory differently, and the disassembler
596 does not show them separately in DISASSEMBLE, but does
597 if DISASSEMBLE-CODE-COMPONENT is used. (lp#1421987)
598 * optimization: The compiler's treatment of type specifiers makes
599 it slightly faster and more memory-efficient. Portable code
600 should be indifferent to this change, however, users of
601 SB-INTROSPECT:FUNCTION-TYPE might notice that (MEMBER T NIL)
602 and (MEMBER NIL T) are both internally collapsed to the former,
603 so that the latter can never be obtained as part of an FTYPE.
604 * optimization: a TYPEP call in which the second argument is not a
605 QUOTE form but nevertheless recognized as a compile-time constant
606 might open-code the test. One scenario for this involves backquote,
607 such as (TYPEP x `(my-type ,some-arg)). Code which relied upon
608 deferring until runtime should declare (NOTINLINE TYPEP).
609 [Due to the sematic constraints of DEFTYPE etc in in CLHS 3.2.2.3,
610 code requiring delayed evaluation could be unportable though.]
611 * enhancement: unused variables at the top-level are now reported.
613 * bug fix: DEFCLASS handles cyclic {super,meta}class relations better
615 * bug fix: compiler no longer signals an error when compiling certain
616 function calls. (lp#1416704, lp#404441, lp#1417822, lp#1234919)
617 * bug fix: compiler doesn't stumble on a LOGIOR transform. (lp#1389433)
618 * bug fix: more robust debugger and backtraces. (lp#1413850, lp#1099500,
619 lp#1412881, lp#945261, lp#1419205, lp#1409402)
620 * bug fix: files larger than 4GB can now be compiled.
621 * bug fix: x86 truncated results from 64-bit foreign functions to 32 bits.
622 * bug fix: file-position didn't work on large files on win32. (lp#1271545)
623 * bug fix: callbacks from foreign threads can work without enabling
625 * bug fix: sb-introspect:function-lambda-list works properly on interpeted
627 * bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (lp#886418)
628 * bug fix: compiler no longer fails to dump a multidimensional array
629 constant involving a circular reference to itself
630 * bug fix: conditional and nested DX allocation no longer confuse the
631 compiler in STACK analysis. (lp#1044465)
632 * bug fix: sb-rotate-byte constant folding bug fixed. (lp#1423682)
634 changes in sbcl-1.2.8 relative to sbcl-1.2.7:
635 * enhancement: better error and warning messages. (lp#1314767, lp#736383)
636 * enhancement: backtrace for invalid argument count produces the exact
637 supplied arguments including the extra ones, on x86, x86-64 and ARM.
638 * enhancement: a STYLE-WARNING is signaled for DEFSTRUCT accessors which
639 are used before the structure is defined; similarly for the predicate.
640 * optimization: FORMAT NIL with only ~a and string arguments is transformed
642 * optimization: POSITION and FIND when inlined into code that is compiled
643 with qualities of safety < 2 and speed > space will no longer signal
644 an error on circular lists, but will potentially loop forever if given
645 no :END constraint. As was always the case, calls that are not inlined
646 are safe regardless of lexical policy.
647 * bug fix: CLOS methods compiled with (OPTIMIZE (DEBUG 0))
648 no longer cause debugger failure when printing a backtrace
649 * bug fix: more resilience to deleted code. (lp#1308328, lp#1390544)
650 * bug fix: the CLHS example of MAKE-LOAD-FORM involving TREE-WITH-PARENT
651 did not work, and now it does.
653 changes in sbcl-1.2.7 relative to sbcl-1.2.6:
654 * optimization: returning constant values refers to preboxed constants
655 more reliably. (lp#1398785)
656 * enhancement: a STYLE-WARNING is produced if a compiler-macro is defined
657 for a function after at least one ordinary (not inlined) call to that
658 function was compiled, indicating a likely compilation order problem.
659 Likewise a warning ensues if a call is compiled to a function
660 that is subsequently proclaimed INLINE.
661 * enhancement: always lose() when something goes wrong while saving a core
662 (instead of just printing an error on stderr in some situations).
663 * enhancement: frames in the debugger are now restartable by default.
664 * bug fix: restore error handling on Windows x86.
665 * bug fix: MAKE-SEQUENCE detects type errors in its :INITIAL-ELEMENT
666 at compile-time when possible. (lp#330299)
667 * bug fix: parsing of malformed type specifiers no longer results
668 in a memory-fault-error.
669 * bug fix: LOOP properly destructures nested lists in WITH.
670 * bug fix: MACROEXPANDing the redefinition of an alien structure type no
671 longer signals the wrong error.
672 * bug fix: PROGV doesn't get confused by forced DEBUG 3 (lp#1405456).
674 changes in sbcl-1.2.6 relative to sbcl-1.2.5:
675 * enhancement: SERVE-EVENTS uses the poll() system call in lieu of
676 select() if the OS has the former. Previously poll() was used
677 only if waiting on exactly one file descriptor.
678 * enhancement: efficiency of access to untagged structure slots is improved
679 on x86-64, and the order of slots in memory is exactly as specified by
680 defstruct, simplifying use of structures as arguments to foreign calls.
681 * bug fix: SB-DEBUG:ARG now works in all TRACE options which evaluate forms.
683 * bug fix: GC memory corruption during internal memory handling.
684 * bug fix: duplicate effective-slot-definition objects as compared
685 by EQ on name could be present in CLASS-SLOTS of a class whose
686 metaclass was structure-class or condition-class. (lp#1049423)
687 * bug fix: HANDLER-BIND with empty bindings works again; regression in
689 * bug fix: ATOMIC-INCF works on structure slots in interpreted code.
691 * bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and
692 (member #\a #\c). (lp#1392068)
693 * bug fix: READ sometimes accidentally preserved a whitespace character
694 after a token when it should not have. (lp#327790)
696 changes in sbcl-1.2.5 relative to sbcl-1.2.4:
697 * enhancement: sb-bsd-sockets now has basic support for IPv6
698 * enhancement: An sb-unicode package has been added, containing
699 many functions related to handling Unicode text
700 * enhancement: The reader now normalizes symbols to Normalization
701 Form KC (NFKC). This behavior can be disabled with
702 SB-EXT:READTABLE-NORMALIZATION
703 * enhancement: a style-warning is signaled if OPTIMIZE declarations
704 multiply specify a quality with differing values. (lp#310267)
705 * bug fix: conservatively pointed to pages wipe out unused dwords so
706 that they cannot act as false roots in turn.
707 * bug fix: the walker's handling of lexical variable and symbol-macro
708 bindings is improved (lp#375326, lp#1368305)
709 * bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a clause
710 contains an undefined condition type; regression in 1.1.19 (lp#1378939)
711 * bug fix: in interpreted code, inequality predicates did not type-check
712 arguments that weren't examined, and a 1-argument use of MIN or MAX
713 accepted a complex number. (lp#1373702)
714 * bug fix: APROPOS and APROPOS-LIST handle inherited symbols correctly.
715 (lp#1364413, thanks to Zach Beane)
717 changes in sbcl-1.2.4 relative to sbcl-1.2.3:
718 * enhancement: the sequence functions MAP, CONCATENATE and MERGE now call
719 the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and
720 SEQUENCE:MERGE respectively when the specified result type designates an
722 * bug fix: Wrong binding order of supplied-p parameters in macro lambda
724 * bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
725 universal superclass (lp#1332983)
726 * bug fix: reading an uninterned symbol whose print name has the
727 syntax of an integer signals an error. (lp#310062)
728 * bug fix: the walker is less likely to be confused when walking LET* forms
729 with special bindings and use of those bindings and others of the same
731 * bug fix: a rare bug affecting 32-bit platforms resulting in a
732 fatal condition with the message "Globaldb rehash failure" has been fixed.
734 changes in sbcl-1.2.3 relative to sbcl-1.2.2:
735 * enhancement: DOCUMENTATION works on instances of
736 FUNCALLABLE-STANDARD-CLASS
737 * enhancement: ASSERT reports arguments of calls to lexical functions in
738 additional to global functions.
739 * enhancement: ASDF updated to 3.1.3
740 * enhancement: UIOP can be loaded without ASDF.
741 * bug fix: some methods on CHANGE-CLASS did not finalize the new class
742 before accessing its class-precedence list.
743 * bug fix: CHANGE-CLASS no longer fails on unbound slots in the source
745 * bug fix: CHANGE-CLASS signals an appropriate error when the destination
746 class is a FORWARD-REFERENCED-CLASS.
747 * bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for slots for
748 which initargs have been supplied.
749 * bug fix: saving cores on ARM was broken since the introduction of GENCGC.
751 * bug fix: macroexpanding a backquoted expression involving ",."
752 outside of the compiler failed. (lp#1354623)
754 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
755 * incompatible change: the #\` ("backquote") reader macro was reimplemented
756 to support robust pretty-printing. Reading a form involving #\` produces
757 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
758 that are not lists. Code that unportably attempts operations on
759 un-evaluated forms resulting therefrom, e.g.
760 (SUBST a b (read-from-string "`(x (,y))"))
761 might generate incorrect results and/or errors.
762 * enhancement: support for GNU/kFreeBSD x86.
763 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
764 and DEFGLOBAL variables of type fixnum.
765 * enhancement: arithmetic constant reduction is now performed on defconstant
766 constants too. (lp#1337069).
767 * bug fix: certain ftype proclamations containing &optional t &rest t no
768 longer cause subsequent definitions to signal bogus style-warnings.
769 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
770 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
773 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
774 * enhancement: GENCGC is enabled on ARM.
775 * enhancement: better error reporting for invalid calls to local functions.
776 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
778 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
780 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
782 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
784 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
785 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
786 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
788 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
789 lp#700538, lp#613876, lp#695286, lp#798388)
790 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
791 * bug fix: array type intersection handles T and unknown element types
792 correctly. (lp#1258716)
793 * bug fix: fix a corner case in array type unparsing that would result in
794 misleading translations from our internal type representation.
795 * bug fix: array-rank now sees through union and intersection types.
797 * bug fix: when DECLARE expressions are in the wrong place, be careful not
798 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
800 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
801 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
802 instead of signaling an error. (lp#1095483)
803 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
804 used to (rarely) introduce duplicate conflict markers in a single
805 TN/block pair. (lp#1327008)
807 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
808 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
809 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
810 report of the signaled conditions lists currently running threads.
811 * enhancement: ported to ARM linux.
812 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
813 * enhancement: new contrib sb-mpfr by Stephan Frank.
814 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
815 (lp#1315846, thanks to Mark Cox)
816 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
817 function-designator to a function only as needed. (lp#1012335)
818 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
819 thanks to Thomas Hlavaty)
820 * bug fix: handle --without-xxx options to make.sh more carefully.
821 (lp#1246665, thanks to Richard M Kreuter)
822 * bug fix: prevent maybe-delete-exit from doing semantically broken things
823 with local exits. (lp#309099, lp#518099, lp#533930)
824 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
827 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
828 * optimization: COERCE is now more effecient for more cases when the type is
829 known at compile-time.
831 * bug fix: correctly inherit condition initforms. (lp#1300904)
832 * bug fix: properly pprint literal functions inside nested lists.
834 * bug fix: more-correctly handle array-type unity (broken for ages, causing
835 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
836 reported by jasom in #lisp).
838 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
839 * enhancement: printing backtraces respects
840 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
842 * optimization: defstruct out-of-line accessor are now as fast as inlined.
844 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
845 instances with a test-function (reported by Vivitron in #sbcl)
846 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
847 * bug fix: Change COND error message (lp#1254511)
848 * bug fix: LOAD is no longer confused when called on a directory.
850 * bug fix: MAKE-CONDITION reports names of missing condition classes
851 properly (lp#1199223)
852 * bug fix: restore building with clang. (lp#1293643)
853 * bug fix: restore building on SPARC (broken since 1.1.15).
854 * bug fix: improved FreeBSD support.
855 * bug fix: PPC floating point conversion corrupted stack.
857 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
858 * minor incompatible change: improve read/print consistency for pathnames on
859 Win32, by using the circumflex character #\^ as the escape character.
861 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
862 * enhancement: Loading fasls with symbols from an undefined package includes
863 the name of the symbol in the error message.
864 * bug fix: problems when redefining classes and doing TYPEP on classes
865 concurrently. (lp#1272742)
866 * bug fixes to the x86-64 XCHG instruction:
867 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
869 ** it was misencoded when used to exchange EAX with itself.
870 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
871 32- and 16-bit variations as NOP.
872 * bug fix: the disassembler outputs source annotations in the right place
873 and no longer randomly drops some of them. (lp#1249205)
874 * bug fix: fix commutative-arg-swap from introducing undumpable structures
875 into code, prevent code with errors from being compiled. (lp#1276282)
876 * bug fix: pathnames with :back in their directory component are succeffully
878 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
879 wrap functions around. (lp#309086)
881 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
882 * new feature: the iterative spilling/coloring register allocator developed
883 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
884 in. By default, it only activates for functions that optimize with
885 (speed 3) and (> speed compilation-speed), but setting
886 sb-regalloc:*register-allocation-method* to :iterative forces its
887 execution. The previous behaviour can be obtained by instead setting that
888 variable to :greedy. Thanks again to Google for their support, and, more
889 crucially, to Alexandra Barchunova for her hard work.
890 * optimization: make-array with known element-type and unknown dimensions is
892 * optimization: make-array with unknown element-type is faster as well.
894 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
895 :application-type argument, which can be :console or :gui. :gui allows
896 having GUI applications without an automatically appearing console window.
897 * enhancement: reduced conservativism on GENCGC platforms:
898 conservative roots must be valid-looking tagged pointers or point
899 within a code object, not merely point to within the allocated part
900 of a page, in order to pin a page.
901 * enhancement: support for "Mac Roman" external format.
902 * enhancement: encapsulation of named generic functions now happens without
903 altering the identity of the function bound to the name.
904 * bug fix: Windows applications without the console window no longer misbehave.
905 (patch by Wilfredo Velazquez, lp#1256034).
906 * bug fix: modular arithmetic optimizations do not stumble on dead branches
907 with bad constants. (reported by Douglas Katzman)
908 * bug fix: CLISP can be used again as a cross-compilation host.
909 (Thanks to Vasily Postnicov, lp#1261451)
910 * bug fix: run-program crashed with :directory nil. (lp#1265077)
912 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
913 * optimization: complicated TYPEP tests are less opaque to the type
914 propagation pass. (lp#1229340)
915 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
916 * optimization: EQUALP on structures with raw slots (double-float/complex)
917 no longer conses and is faster.
918 * optimization: RESTART-CASE expands to more compact code.
919 Thanks to Jan Moringen. (lp#1249055)
920 * enhancement: Top-level defmethod without defgeneric no longer causes
921 undefined-function warnings in subsequent forms. (lp#503095)
922 * enhancement: Better error messages for system errors on Windows.
923 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
924 Cushing. (lp#1249183)
925 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
926 specification (multiple integer arguments) and signals a continuable error
927 if the current SBCL version is lower (older) than the specification.
929 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
930 * bug fix: EQUALP now compares correctly structures with raw slots larger
932 * bug fix: contribs couldn't be built on Windows with MinGW.
933 * bug fix: Better pathname handling on Windows. (lp#922117)
934 * bug fix: OPEN reports a more meaningful error when an existing file is
935 opened for output with :if-exists :new-version. Thanks to Philip
936 Munksgaard. (lp#455381)
937 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
938 CLOS-related errors. (lp#633911)
939 * bug fix: GC deadlocks caused by concurrent consing on Windows.
941 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
942 * optimization: better distribution of SXHASH over small conses of related
944 * other improvements to SXHASH:
945 ** use the whole of the positive-fixnum range for SXHASH of fixnums
946 * enhancement: The error message when calling an undefined alien function
947 includes the name of the function on x86-64.
948 * enhancement: sb-ext:run-program now supports :environment on Windows.
949 * enhancement: ASDF is no longer required to load contribs at runtime.
951 * enhancement: when called with a symbol, FIND-RESTART no longer calls
952 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
953 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
954 clusters better in some cases
955 * enhancement: SOME/ANY/other quantification higher-order functions no
956 longer cons. (lp#1070635)
957 * bug fix: forward references to classes in fasls can now be loaded.
959 * bug fix: don't warn on a interpreted->compiled function redefinition
960 from the same location. (patch by Douglas Katzman, lp#1042405)
961 * bug fix: Create vectors of proper internal length when reading literal
962 vectors from FASLs. (Reported by Jan Moringen)
963 * bug fix: COMPILE can now successfully compile setf functions.
964 (Reported by Douglas Katzman)
965 * bug fix: run-program performs more correct escaping of arguments on
966 Windows. (lp#1239242)
967 * bug fix: function-lambda-expression on generic functions returns the
969 * bug fix: (the [type] [constant]) now warns when [constant] matches
970 [type] except for the number of values. (Reported by Nathan Trapuzzano
972 * bug fix: signal errors in required cases of slot-definition initialization
973 protocol. (lp#309072)
974 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
975 (thanks to Stelian Ionescu, lp#1242643)
976 * bug fix: when given a restart object, FIND-RESTART checks whether the
977 restart is active and, when a condition is supplied, whether the restart
978 is associated to a different condition (lp#774410)
980 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
981 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
982 shutdown(3). (thanks to Jan Moringen, lp#1207483)
983 * enhancement: document extensible sequences. (thanks to Jan Moringen,
985 * optimization: EQUAL and EQUALP transforms are smarter.
986 (thanks to Elias Martenson, lp#1220084)
987 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
988 * bug fix: probe-file now can access symlinks to pipes and sockets in
989 /proc/pid/fd on Linux. (reported by Eric Schulte)
990 * bug fix: SBCL can now be built on Solaris x86-64.
991 * bug fix: Floating point exceptions do not persist on Solaris anymore.
992 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
993 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
995 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
996 (thanks to Stephan Frank)
997 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
998 (thanks to Stephan Frank, lp#1206191)
999 * bug fix: sb-safepoint can now reliably handle signal interruptions of
1000 foreign code. (lp#1133018)
1001 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
1002 constructors no longer fails to merge actual and default initargs
1003 (thanks to Jan Moringen, lp#1179858)
1004 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
1005 constructors handles non-KEYWORD initialization arguments more correctly.
1006 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
1007 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
1008 * bug fix: class definitions with CPLs inconsistent with their metaclasses
1009 are less likely to destroy the object system's integrity. (lp#309076)
1010 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
1011 standard. (lp#1203585, thanks to Jan Moringen)
1012 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
1013 settings. (lp#1023721)
1014 * bug fix: getting the order of arguments to
1015 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
1016 rather than a failed AVER. (reported by Paul Nathan)
1017 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
1018 arguments during copying on x86 and x86-64; it may still happen on other
1019 platforms when there are more fixed arguments than stack slots.
1020 (reported by Jan Moringen)
1022 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
1023 * enhancement: support building the manual under texinfo version 5.
1025 * enhancement: Windows builds no longer display the "Kitten of Death" message.
1026 A warning is instead appended to the regular banner, and may be muted with
1027 --noinform. (lp#728247)
1028 * enhancement: support building under new linker handling of syscalls under
1029 NetBSD. (thanks to Robert Swindells)
1030 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
1031 (regression since 1.1.9)
1032 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
1033 compiler macro. (thanks to Douglas Katzman).
1034 * bug fix: signal a warning when defining a setf-function when a
1035 setf-expander is already present. (thanks to Douglas Katzman).
1036 * bug fix: improved threading on PPC.
1037 * bug fix: ROOM works again on Windows. (lp#1206456)
1038 * bug fix: Streams were flushed even when there was one byte still left in
1039 the buffer. (lp#910213)
1040 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
1041 either NIL or :ERROR. (reported by Jan Moringen)
1043 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
1044 * enhancement: ASDF has been updated to 3.0.2.
1045 * optimization: stack frames are packed more efficiently on x86oids, which
1046 ought to reduce the frequency of Methuselahn conservative references (it
1047 certainly helps with gc.impure.lisp / BUG-936304 on x86).
1048 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
1049 recognized in modular arithmetic contexts, and compile to native negate,
1050 rather than going through bignums only to keep the low bits.
1051 * bug fix: Compiling potential modularic arithmetic forms does not cause type
1052 errors when some integer types lack lower or upper bounds. (lp#1199127)
1053 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
1054 bitwidth before being used in a non-modular context. (lp#1199428)
1055 * bug fix: Multiple catch/unwind blocks in a single function are now
1056 allocated in the right stack order on win32. (lp#1072739)
1058 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
1059 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
1060 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
1061 * enhancement: disassemble now annotates some previously missing static
1062 functions, like LENGTH.
1063 * enhancement: clean.sh now also cleans doc/internals.
1064 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
1065 print a symbol with a package prefix.
1066 * enhancement: The debugger and backtracing are more robust against buggy
1067 PRINT-OBJECT methods.
1068 * optimization: calls to static functions on x86-64 use less instructions.
1069 * optimization: compute encode-universal-time at compile time when possible.
1070 * optimization: when referencing internal functions as #'x, don't go through
1071 an indirect fdefn structure.
1072 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
1073 * optimization: (mod fixnum) type-checks are performed using one unsigned
1074 comparison, instead of two.
1075 * optimization: enable more modular arithmetic transforms in the presence of
1077 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
1078 when the result is known to be negative.
1079 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
1080 * optimization: comparisons between rationals and constant floats or between
1081 integers and constant ratios are now converted to rationals/integers at
1083 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
1084 * bug fix: problems with NCONC type derivation (reported by Jerry James).
1085 * bug fix: EXPT type derivation no longer constructs bogus floating-point
1086 types. (reported by Vsevolod Dyomkin)
1087 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
1088 addrinfo. (lp#1187041, patch by Jerry James)
1089 * bug fix: uninitialized type-error conditions can now be printed.
1091 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
1092 listening, allowing several tests to run in parallel.
1093 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
1094 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
1096 * bug fix: Specialised SIMD-PACK types can be negated.
1097 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
1098 reported by Eric Marsden)
1099 * bug fix: FP return values from foreign calls are always rounded to single
1100 or double float precision on x87.
1101 * bug fix: Known-safe vector access on x86oids should not fail spuriously
1102 when the index is of the form (+ x constant-positive-integer).
1103 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
1104 * bug fix: backtrace printer no longer tries to create very large lists when
1105 the arg-count register is clobberred by other code. (lp#1192929)
1106 * bug fix: x86 should never signal an FP exception while boxing an FP value,
1107 a situation that lands us into ldb.
1109 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
1110 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
1111 ROOM, plus a few SB-INTROSPECT functions) has been completely
1112 rewritten; it may now exhibit different bugs than before.
1113 * new feature: minimal runtime/compiler intrastructure support for SSE
1114 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
1115 feature :sb-simd-pack. This should enable intrinsics extensions as
1116 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
1117 for maintaining a branch for so long.
1118 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
1119 the working directory of the spawned process.
1120 (lp#791800) (patch by Matthias Benkard)
1121 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
1122 stack-allocated on PPC.
1123 * enhancement: "fixed objects" can now be stack-allocated on PPC.
1124 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
1125 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
1126 also returns VOPs which do not translate any functions, and finds
1127 defoptimizer types ir2convert and stack-allocate-result.
1128 * enhancement: better type derivation for APPEND, NCONC, LIST.
1130 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
1131 heap in a manner similar to the GC rather than its previous ad-hoc
1132 scheme, and is therefore no less and possibly more accurate.
1133 * fixes and enhancements related to Unicode:
1134 ** the character database information has been updated to Unicode 6.2;
1135 ** support for canonical and compatibility decomposition of characters has
1136 been added, along with support for primary composition;
1137 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
1138 NFKD) has been included;
1139 ** querying the character database for code points not defined by Unicode
1140 gives less wrong answers (lp#1178038, reported by Ken Harris)
1141 * enhancement: print intermediate evaluation results for some ASSERTed
1142 expressions. (lp#789497) (patch by Alexandra Barchunova)
1143 * enhancement: x86-64 disassemblies are annotated with unboxed constant
1144 values when there are references to (RIP-relative) unboxed constants.
1145 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
1146 of quadratically with the size of the input in the worst case.
1148 * bug fix: handle errors when initializing *default-pathname-defaults*,
1149 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
1150 decoding errors, or directories being deleted.
1151 * bug fix: Loading a core with a discontiguous dynamic space now correctly
1152 computes the amount of dynamic space used.
1153 * bug fix: disassembler missing ",8" on SHLD
1154 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
1155 that provide an "invalid" stack frame link for the signal handler
1156 itself now use the saved-fp-and-pc mechanism to pick up from the stack
1157 frame in the interrupt (signal) context. This is known to affect
1158 threaded FreeBSD/x86-64.
1159 * bug fix: some LOOP statements couldn't be compiled.
1161 * bug fix: sb-sequence:dosequence works on literal vectors.
1162 * bug fix: errors in generic arithmetic show the assembly routine's
1163 caller on x86 and x86-64. (lp#800343)
1164 * bug fix: Compile-time type errors should never result in COMPILE-FILE
1165 failure. (lp#943953)
1166 * bug fix: Known bad local calls do not cause strange failures when
1167 emitting or dumping code. (lp#504121)
1168 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
1169 codegen errors: type checks are inserted as necessary. (lp#1177703)
1170 * bug fix: Unsigned modular arithmetic is correctly converted into signed
1171 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
1172 * bug fix: a combination of inlined local function with &optional and
1173 recursion no longer causes undescriptive compiler errors. (lp#1180992)
1174 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
1175 when testing for non-zero-ness.
1176 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
1178 * bug fix: Type mismatch for the value of conditional expressions are
1179 correctly reported when detected at compile-time, instead of complaining
1180 about a constant NIL (similar for non-EQ-comparable catch tags).
1181 * bug fix: Referring to INLINE global functions as values should not result
1182 in a compilation failure. (lp#1035721)
1183 * optimization: faster ISQRT on fixnums and small bignums
1184 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
1185 * optimization: On x86-64, the number of multi-byte NOP instructions used
1186 for code alignment is now always minimal.
1187 * optimization: On 64-bit targets, the compiler generates much faster
1188 code for type checks for types known at compile time that are smaller
1189 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
1190 their COMPLEX variants.
1191 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
1192 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
1193 * optimization: ROOM no longer conses so egregiously on non-x86oid
1195 * optimization: associative bitwise operations reassociate patterns like
1196 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
1198 * optimization: quasiquote expressions now perform more constant folding,
1199 instead of consing equal lists at runtime. (lp#1026439)
1200 * optimization: local call analysis of inlined higher-order function
1201 should converge more quickly, resulting in better code for complex
1203 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
1204 integer constants are handled more cleverly, especially when they
1205 can be represented as sign-extended (signed-byte 32). (Based on a
1206 patch by Douglas Katzman)
1207 * optimization: IF/IF conversion should reliably result in sane code
1208 when (some of) the results of the inner IF are always false or
1210 * optimization: On x86oids, variable right shifts of machine words are
1211 compiled into straight SAR/SHR, instead of going through the generic
1214 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
1215 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
1217 * bug fix: :allocation slot option works for condition slots
1219 * bug fix: redefining conditions does not lead to multiple evaluations of
1220 hairy slot initfunctions anymore (lp#1164969)
1221 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
1223 * bug fix: function constants now work as initforms and default initarg
1224 values of conditions (lp#539517)
1225 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
1226 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
1227 * bug fix: no more bogus ## references when pretty printing backquoted
1228 forms with non-trivial structure sharing. (lp#1161218)
1229 * bug fix: Don't signal an error on (setf (documentation nil 'function)
1230 "doc"). Signal a style-warning instead when trying to set documentation
1231 of NIL for all other documentation types. (Reported by Zach
1232 Beane; regression since 2e52fa05.)
1233 * bug fix: modular arithmetic involving large constants and conditionals
1234 should no longer result in spurious dead code elimination. (Reported by
1236 * bug fix: our mach exception handler can seemingly called very early in
1237 the program execution process on OS X 10.8.0. Try and handle that case
1238 robustly, without potentially leaking mach ports too much.
1239 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
1241 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
1242 * enhancement: the continuable error when defknown-ing over extant
1243 fndb entries can be ignored by passing :overwrite-fndb-silently t
1244 as a keyword argument to sb-c:defknown (after attributes). Useful
1245 to allow defknown to be re-loaded. Use with :allow-other-keys t
1246 for backward compatibility.
1247 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
1249 * bug fix: Prevent a make-array transform from modifying source forms
1250 causing problems for inlined code. Thanks to Bart Botta.
1251 (regression since 1.0.42.11-bis)
1252 * bug fix: clear-output calls the correct gray stream routine,
1253 sb-gray:stream-clear-output. (lp#1153257)
1254 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
1256 * bug fix: Better error messages for package operations (lp#1154776)
1257 * bug fix: delete-package on a nonexistent package should signal a cerror.
1258 (regression since 1.0.37.44).
1259 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
1260 (lp#1154946, lp#1072112)
1261 * bug fix: compiling make-array no longer signals an error when the
1262 element-type is an uknown type, a warning is issued instead.
1263 Thanks to James Kalenius (lp#1156095)
1264 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
1265 produces wrong results for some inputs. (Thanks to Jan Moringen.)
1268 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
1269 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
1271 * new feature: package local nicknames. See manual for details.
1272 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
1273 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
1274 * enhancement: easier to use restarts for resolving name-conflicts
1275 resulting from IMPORT, EXPORT, or USE-PACKAGE.
1276 * enhancement: variant DEFPACKAGE forms now signal a full error with
1277 restarts provided for resolving the situation. (lp#891351)
1278 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
1279 DEFPACKAGE forms can now signal a full error with restarts provided for
1280 resolving the situation. See manual for details. (lp#891351)
1281 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
1282 (Thanks to Anton Kovalenko.) (lp#1102748)
1283 * enhancement: backtrace improvements
1284 ** secondary CLOS dispatch functions have better debug names (lp#503081)
1285 ** easier to read method names in backtraces. See
1286 SB-DEBUG:*METHOD-FRAME-STYLE*.
1287 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
1288 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
1289 SB-DEBUG:BACKTRACE-AS-LIST.
1290 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
1291 information is available in less intrusive form as frame annotations.
1292 * enhancement: SB-POSIX now provides MAP-ANON.
1293 * enhancement: test-suite results are colorized, failures in red, unexpected
1294 success in green. Works on Windows and on terminals with ANSI escape code
1295 support. Can be disabled with --no-color.
1296 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
1297 (thanks to James M. Lawrence)
1298 * bug fix: no more unused variable style warnings from RESTART-CASE
1299 macroexpansion (lp#1113859)
1300 * bug fix: no more unused variable style warnings when loading
1301 sb-bsd-sockets.asd (lp#1114681)
1302 * bug fix: deleting a package removes it from implementation-package
1303 lists of other packages.
1304 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
1305 This does not fix the occasional "interrupt already pending" issue, though.
1306 * bug fix: (setf (documentation 'x 'function)) and
1307 (setf (documentation #'x t)) set documentation in different places.
1308 (regression since 1.0.43.63)
1309 * bug fix: build on newer glibc. (lp#1095036)
1311 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
1312 * optimization: LOOP expressions using "of-type character" have slightly
1313 more efficient expansions.
1314 * bug fix: very long (or infinite) constant lists in DOLIST do not result
1315 in very long compile times or heap exhaustion anymore. (lp#1095488)
1316 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
1317 * bug fix: adjust-array ignored :initial-element for simple-vectors.
1319 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
1320 longer cause infinite loops (on circular data) or violate eqlity
1321 constraints. (lp#1099708)
1322 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
1324 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
1325 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
1327 * enhancement: support for C-c to interrupt the foreground thread
1328 on Windows. (Thanks to Anton Kovalenko.)
1329 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
1330 * enhancement: Safepoint builds on POSIX platforms can now optionally be
1331 built without pseudo-atomic sequences and their run-time overhead.
1332 * enhancement: Threads created outside of Lisp can enter Lisp through
1333 alien callbacks and appear as Lisp threads for the duration of that
1334 function invocation. On safepoint builds only.
1335 * enhancement: Miscellaneous improvements to namestrings and underlying
1336 calls to OS functions for file system access on Windows. (Thanks to
1338 * enhancement: The MSI installer support for Windows now uses Windows
1339 Installer XML at least version 3.5 and includes various usability
1340 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
1341 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
1342 on Windows. (Thanks to Anton Kovalenko.)
1343 * enhancement: The Windows backend now supports the x86-64 platform.
1344 (Thanks to Anton Kovalenko.)
1345 * bug fix: fasls are now once again directly executable (on platforms
1346 supporting shebang lines, with a suitably-installed sbcl).
1347 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
1348 * bug fix: Fix CAS access to slots of direct instances of structure classes
1349 in the presence of subclasses sharing the same conc-name.
1350 * bug fix: Logical pathname namestrings on Windows have been changed to
1351 be lower-case, to minimize differences between POSIX and Windows.
1353 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
1354 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
1355 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
1356 (NT 5.0) is no longer being maintained.
1357 * notice: Starting with this version, SBCL on Windows no longer supports
1358 building with disabled thread support.
1359 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
1360 * enhancement: New feature sb-dynamic-core allows the runtime to be
1361 rebuilt or relocated without requiring changes to the core file on
1362 all linkage table platforms. Required on Windows. (Thanks to Anton
1364 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
1365 * enhancement: I/O on Windows unnamed pipes is interruptible
1366 asynchronously using interrupt-thread, timers when running on Windows NT
1367 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
1369 * enhancement: Support for the experimental safepoint-based stop-the-world
1370 protocol on the PowerPC platform.
1371 * bug fix: Non-blocking reads from the Windows console were not necessarily
1372 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
1373 * bug fix: stability of threads on Windows has been improved upon through
1374 an updated stop-the-world protocol (thanks to Anton Kovalenko).
1376 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
1377 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
1378 (COMPILE and COMPILE-FILE still do.)
1379 * optimization: the SPARC backend now supports the precise generational
1380 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
1381 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
1382 * enhancement: add experimental support for the SB-THREAD feature and the
1383 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
1384 Threads are enabled by default, and this version of SBCL is considered
1385 to be the last and final release to officially support building with
1387 * optimization: The compiler no longer rotates loops in some cases where
1388 this transformation actually lead to worse code being generated.
1389 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
1390 symbol-macros by lexical bindings.
1391 * bug fix: stack allocation was prevented by high DEBUG declaration in
1393 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
1394 (thanks to SANO Masatoshi)
1395 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
1396 :JUNK-ALLOWED was true.
1397 * bug fix: type derivation inferred overly conservative types for
1398 unions of array types. (lp#1050768)
1400 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
1401 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
1402 source annotation of DISASSEMBLE output. Defaults to T.
1403 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
1404 WAIT-P argument added to WITH-RECURSIVE-LOCK.
1405 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
1407 * enhancement: Optional features (not enabled by default) allow the
1408 use of signals for inter-thread synchronization to be reduced on certain
1409 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
1410 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
1411 to test these experimental features. Known remaining bugs include minor
1412 thread safety issues, less timely freeing of memory by GC, and certain
1413 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
1414 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
1415 comparisons, particularly on almost-sorted inputs.
1416 * bug fix: Reading floats with large exponents no longer takes too much time
1417 before reporting that the exponent is too large.
1418 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
1419 correctly when the received datagram is larger than the provided buffer.
1420 (lp#1023438, thanks to Robert Uhl)
1421 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
1422 a SYMBOL-VALUE form with a constant symbol argument.
1423 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
1424 into a DEFCAS defined place was used as the place.
1425 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
1426 for from bit-vectors.
1427 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
1428 lead to internal errors or crashes (lp#1058799).
1429 * documentation: a section on random number generation has been added to the
1432 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
1433 * enhancement: implicit generic function warnings now specify the package
1434 in which the new generic function is being created.
1435 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
1436 updates of CAS-able places (similar to Clojure's swap!).
1437 * enhancement: run-program no longer decodes and re-encodes environment when
1438 :environment argument is not provided. (lp#985904)
1439 * enhancement: errors during compiler-macro expansion no longer cause
1440 runtime errors, only a compile-time warning, otherwise behaving as if
1441 the compiler macro had declined to expand.
1442 * optimization: On x86-64, code alignment of block headers is done with
1443 multi-byte NOPs now instead of repetitions of the single-byte NOP.
1444 * optimization: MAP-INTO is substantially faster when the target sequence is
1445 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
1446 thanks to James M. Lawrence)
1447 * optimization: the compiler no longer heap-conses to check exits in cases
1448 where the exit function is dynamic extent, or when it can prove the exit
1449 function cannot escape. (lp#1002534)
1450 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
1451 element type, and vectors that aren't SIMPLE-ARRAYs.
1452 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
1453 speed (around 1/3 the time in some cases), and a little better in terms of
1454 comparison calls. (Thanks to Takeru Ohta)
1455 * bug fix: On SPARC, a limitation on the number of code constants emittable
1456 by the compiler has been lifted, allowing certain long functions to
1457 compiled and assembled which had previously been unsupported; fixes
1458 cl-bench on this ISA (lp#1008996).
1459 * bug fix: potential for infinite recursion during compilation of CLOS slot
1460 typechecks when dependency graph had loops. (lp#1001799)
1461 * bug fix: error forms reported with some program-errors were not escaped
1463 * bug fix: functions from EVAL are now on more equal footing with functions
1464 from COMPILE. (lp#1000783, lp#851170, lp#922408)
1465 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
1466 objects as its :METHOD-COMBINATION argument, not just lists designating
1467 method combinations. (lp#936513)
1468 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
1470 * bug fix: restore build on solaris/sparc. (lp#1008506)
1471 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
1472 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
1473 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
1474 as keyword arguments no longer accidentally match unevaluated symbols
1476 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
1477 parameter was zero, now it signals an error. (lp#905817, fixed since
1479 * bug fix: run-program with :pty t no longer makes the pty as the process's
1480 controling terminal.
1481 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
1484 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
1485 * RANDOM enhancements and bug fixes:
1486 ** bug fix: the range and distribution of random integers could be
1487 catastrophically wrong when the compiler derived the type of its
1488 argument as a disjoint set of small integers.
1489 ** bug fix: the distribution of random integers is now completely
1490 uniform even when the specified limit is not a power of two.
1491 (Previously some values could be about 0.1 % more probable than
1492 others in the worst case.) (lp#309467)
1493 ** RANDOM on large integer arguments is generally faster and conses
1494 less than before; this is visible for fixnums above a length of
1495 about 24 bits, but extremely so for bignums: the old implementation
1496 used time and space quadratical in the size of the argument there,
1497 the new one is linear.
1498 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
1499 main entry point, SB-EXT:QUIT is deprecated.
1500 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
1501 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
1502 * enhancement: FASL loading no longer grabs the world-lock.
1503 * enhancement: GENCGC reclaims space more aggressively when objects being
1504 allocated are a large fraction of the total available heap space.
1506 * enhancement: backtraces show the correct number of arguments for frames
1507 called with too many arguments.
1508 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
1510 * enhancement: ASDF has been updated 2.21.
1511 * optimization: fewer uses of full calls to signed modular functions.
1513 * optimization: typechecking alien values is typically 5 x faster.
1514 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
1516 * bug fix: file compilation performance issues when dumping subtypes
1517 of CHARACTER (lp#994487)
1518 * bug fix: fixed disassembly of some SSE instructions on x86-64.
1519 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
1520 OPEN. (lp#969352, thanks to Kambiz Darabi)
1521 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
1523 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
1524 classoid even if X was not the proper name of the class. (lp#941102)
1525 * bug fix: declaration leakage between lexical environments due to careless
1526 use of NCONC in MAKE-LEXENV. (lp#924276)
1527 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
1528 *default-pathname-defaults* contains NAME or TYPE components.
1529 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
1530 from CL package, e.g. (loop . 10).
1531 * bug fix: run-program with existent or non-existent files for :output or
1532 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
1533 returns NIL instead of signalling an obscure error.
1534 * bug fix: fix miscompilation of some logand forms with large constant
1535 arguments. (lp#974406)
1536 * bug fix: account for funcallable-instance objects properly in ROOM.
1537 * bug fix: incorrect octets reported for c-string decoding errors.
1539 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
1541 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
1542 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
1543 allowing faster release of memory back to the OS. (lp#991293)
1544 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
1545 existing deadline for the dynamic scope of its body.
1546 * bug fix: compiler-internal interval arithmetic needed to be more
1547 conservative about open intervals when operated on by monotonic but not
1548 strictly-monotonic functions. (lp#975528)
1549 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
1550 it's also slightly faster. (lp#998926)
1551 * bug fix: better error messages for malformed declarations.
1553 * bug fix: define-condition didn't return the name of the defined condition.
1555 ** improved docstrings: REPLACE (lp#965592)
1557 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
1558 * bug fix: fix copy-structure. When copying from stack to heap, garbage
1559 could end up in the heap making GC unhappy.
1560 (Thanks to James Knight, lp#911027)
1562 ** SBCL can now be built using Clang.
1563 ** ASDF has been updated 2.20.
1564 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
1565 * bug fix: don't complain about a too-hairy lexical environment for inlining
1566 when the function has never been requested for inlining. (lp#963530)
1568 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
1569 * enhancements to building SBCL using make.sh:
1570 ** --fancy can be specified to enable all supported feature enhancements.
1571 ** --with-<feature> and --without-<feature> can be used to specify
1572 which features to build with.
1573 ** --arch option can be used to specify the architecture to build for.
1574 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
1575 full-blows cross-compilation.)
1576 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
1577 which allows specifying name of the default interning package for the
1579 * enhancement: when *READ-EVAL* is true, arrays with element type other than
1580 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
1581 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
1582 null alien when malloc() fails. (lp#891268)
1583 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
1584 conditions can be conveniently accessed through function with the same
1585 name, analogously to CONTINUE.
1586 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
1587 from the printer by type, causing an error marker to be printed instead.
1588 (Thanks to Attila Lendvai)
1589 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
1590 generally behave better when errors occur during printing.
1591 * enhancement: the test runner now takes a --report-skipped-tests argument
1592 to report the individual tests skipped as well as the number of skipped
1594 * enhancement: undefined functions now appear in backtraces as ("undefined
1595 function") instead of ("bogus stack frame") on x86oids.
1596 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
1597 deadlock errors are reported in an easier-to-decipher manner.
1598 * enhancement: DESCRIBE on type designators reports the expansion in more
1600 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
1601 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
1602 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
1603 * enhancement: better disassembly of segment-prefixes on x86 and other
1604 instruction prefixes (e.g. LOCK) on x86 and x86-64.
1605 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
1606 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
1607 * optimization: SUBSEQ on vectors of unknown element type is substantially
1609 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
1610 be stack-allocated. (lp#902351)
1611 * optimization: the compiler is smarter about representation selection for
1612 floating point constants used in full calls.
1613 * optimization: the compiler no longer refuses to coerce large fixnums to
1614 single floats inline, except on x86 where this limitation is still
1616 * optimization: truncation operations on integers with constant divisor
1617 arguments 1 and -1 are optimized away.
1618 * bug fix: deadlock detection could report the same deadlock twice, for
1619 two different threads. Now a single deadlock is reported exactly once.
1620 * bug fix: interval-arithmetic division during type derivation did not
1621 account for signed zeros.
1622 * bug fix: compiler error when typechecking a call to a function with
1623 non-constant keyword arguments.
1624 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
1625 * bug fix: condition slot accessors no longer cause undefined function
1626 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
1627 form that defines them. (lp#896379)
1628 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
1629 by ANSI. (lp#894202)
1630 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
1631 bogusly report NIL, T.
1632 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
1633 required arguments ignored and performed assignments to others.
1635 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
1636 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
1637 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
1638 * bug fix: redefining a function whose previous definition contained an
1639 unknown type no longer causes a style-warning. (lp#806243)
1640 * bug fix: undefined functions now appear in backtraces as ("undefined
1641 function") instead of ("bogus stack frame") on non-x86oids.
1642 * bug fix: backtraces are no longer cut off at ("undefined function") when
1643 called under certain circumstances (involving a caller-allocated stack
1645 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
1646 systems. (regression since 1.0.53)
1647 * bug fix: GC deadlocks from dladdr() on certain platforms.
1648 * bug fix: broken standard streams no longer automatically cause recursive
1649 errors on debugger entry.
1650 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
1651 (regression since 1.0.53)
1652 * bug fix: attempts to stack allocate a required argument to a function with
1653 an external entry point caused compiler-errors.
1654 * bug fix: compiler notes for failed stack allocation for a function argument
1655 no longer claim to be unable to stack allocate the function.
1656 * bug fix: COERCE now signals a type-error on several coercions to
1657 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
1658 * bug fix: missing failure-to-stack-allocate compiler notes for some
1659 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
1660 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
1662 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
1664 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
1665 * minor incompatible changes:
1666 ** RENAME-FILE on a symbolic links used to rename the linked-to file
1667 instead of the link.
1668 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
1669 directory, but now signal an error instead. Use TRUENAME to resolve the
1670 pathname if you wish to delete the linked directory, and DELETE-FILE if
1671 you wish to delete the
1672 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
1673 symbols associated with it will trigger a compile-time warning.
1674 * thread-related enhancements:
1675 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
1676 Many thanks to generous donors!)
1677 ** Threading is now more reliable on non-Linux platforms. We still don't
1678 consider threads on non-Linux platforms good enough to enable them by
1679 default, but they're in a clearly better shape now.
1680 ** Deadlines supported now on all platforms.
1681 ** All blocking functions in the threading API now have a :TIMEOUT
1683 ** Semaphore notification objects have been added to SB-THREAD.
1684 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
1685 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
1686 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1687 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
1688 using an API anologous to defining new SETFable places.
1689 * GC-related enhancements and bug fixes:
1690 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
1691 and Gb suffixes. Default is megabytes as before.
1692 ** on GENCGC targets, the default dynamic space size is now 512Mb for
1693 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
1694 exception, defaulting to mere 444Mb to fit under default ulimits.) The
1695 new defaults are in place to prevent hitting swap on low-end systems.
1696 Use build-time option --dynamic-space-size to build an SBCL with
1697 another default, or the runtime option to adjust the size at startup: a
1698 good size is at most equal to the amount of physical memory the system
1700 ** on GENCGC targets, nursery and generation sizes now default to 5% of
1702 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
1703 refuses to create SIMPLE-FUN objects.
1704 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
1706 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
1707 validation of pointer objects as GENCGC does, instead of a
1708 comparatively weak bounds-check against the heap spaces.
1709 * SB-BSD-SOCKETS bug fixes:
1710 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
1711 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
1712 systems with getaddrinfo().
1713 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
1714 safe outside systems with getaddrinfo().
1715 * enhancement: ASDF has been updated 2.019.
1716 * enhancement: special-case TCO prevention for functions which never return
1717 extended to untrusted types, keeping one more frame's worth of debug
1718 information around in many cases.
1719 * enhancement: debug-names of anonymous and local function are more
1720 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
1721 * enhancement: on win32, ABS of complex floats guards better against
1722 overflows. (lp#888410)
1723 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
1724 process exiting with code 1. (lp#676987)
1725 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
1726 the system where on the filesystem the SBCL sources themselves are
1727 located. (Thanks to Zach Beane)
1728 * enhancement: the compiler is now able to derive tighter bounds for
1729 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
1730 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
1731 correctly, even on wide-fixnum builds. (lp#887220)
1732 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
1733 resolved to directories.
1734 * bug fix: type mismatch when assigning to lexical variables no longer
1735 result in fasl-dumping internal type objects. (lp#890750)
1736 * bug fix: type mismatch on (SETF AREF) and function return values no
1737 longer result in fasl-dumping internal type objects.
1738 * bug fix: With several combinations of argument types, for example (EXPT
1739 <integer> <(complex double)>), EXPT now uses double-precision throughout
1740 instead of partially calculating only to single-precision. (lp#741564;
1741 thanks to Lutz Euler)
1742 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
1743 objects when interrupted by GC on PPC.
1745 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
1746 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
1747 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
1748 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
1749 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
1750 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
1751 targets is now 63 bits (up from 61).
1752 * enhancement: DESCRIBE now reports a lambda-list and source location
1753 for complext setf-expanders.
1754 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
1755 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
1756 of multiple-valued places to be set to NIL, instead of signalling an
1757 error (per a careful reading of CLHS 5.1.2.3).
1758 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1759 * bug fix: repair crash in x86oid darwin signal handling emulation
1760 when built with certain compilers.
1761 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1762 rotation arguments on x86-64. (lp#882151)
1763 * bug fix: low-level control flow optimisations could result in bogus
1764 code in functions with tail and non-tail calls to local functions on
1765 x86oids. (lp#883500)
1766 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1767 to emit literal characters > (code-char 4095), for comparisons with
1768 constant characters.
1769 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1770 on 64 bit platforms. (lp#881445)
1771 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1772 delete the wrong file when using relative pathnames. (lp#882877)
1773 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1774 sequences and :KEY NIL.
1776 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1777 * enhancement: ASDF has been updated to version 2.017.
1778 * enhancement: the --core command line option now accepts binaries with
1780 * enhancement: when built with :sb-core-compression, core files (regular
1781 or executable) can be compressed with zlib. Use the :COMPRESSION
1782 argument to SAVE-LISP-AND-DIE to specify a compression level.
1783 * enhancement: --[no-]merge-core-pages determines whether the runtime
1784 hints the operating system that identical core pages between SBCL
1785 processes should share the same physical memory. Default is to only
1786 enable this for compressed cores.
1787 * optimization: SLEEP no longer conses.
1788 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1789 or bit-vectors when using the standard pretty-print dispatch table.
1790 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1792 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1793 AREF, CHAR, etc. (lp#826971)
1794 * bug fix: compiler-errors causes by integer arguments with composed of
1795 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1796 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1797 expressions. (lp#770184)
1798 * bug fix: complex single float literals are correctly aligned when used
1799 as arguments of arithmetic operators.
1800 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1801 fixnum is correct. (reported by Peter Keller)
1802 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1803 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1805 * bug fix: redefining classes such that slots with custom allocation are
1806 added or removed works again.
1808 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1809 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1810 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1811 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1812 * enhancement: added support for socket keepalive timeout intervals
1813 and probe counts on Linux.
1814 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1815 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1816 * enhancement: added new toplevel options --quit and --non-interactive
1818 * enhancement: the Windows port of SBCL now builds and runs on Wine
1819 (thanks to Anton Kovalenko).
1820 * enhancement: more, and more correct, SSE instruction definitions on
1821 x86-64 (thanks to Alexander Gavrilov).
1822 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1823 to help the processor execute spin loops, when applicable. Currently
1824 implemented for x86 and x86-64.
1825 * optimization: unsigned integer divisions by a constant are implemented
1826 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1827 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1828 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1829 instructions. (lp#814688)
1830 * bug fix: COERCE to unfinalized extended sequence classes now works.
1831 (reported by Jan Moringen; lp#815155)
1832 * bug fix: a compiler error during typecheck generation, reported by Eric
1833 Marsden. (lp#816564)
1834 * bug fix: obsolete instance protocol fires when shared slots are added
1836 * bug fix: fixed-format floating point printing with scaling factors.
1838 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1839 backtraces. (lp#818460)
1840 * bug fix: better backtraces for interrupted syscall frames on x86.
1842 * bug fix: SSE comparison instructions can be disassembled even when one
1843 operand is in memory. (lp#814702)
1844 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1845 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1846 type information associated with the VALUES form.
1847 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1849 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1850 first write (lp#561642).
1851 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1852 * bug fix: bound propagation involving conversion of large bignums to
1853 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1855 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1856 functions; reported by Lutz Euler (lp#826459).
1857 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1860 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1861 * enhancement: errors from FD handlers now provide a restart to remove
1862 the offending handler.
1863 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1865 * enhancement: location of user or system initialization file can now easily
1866 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1867 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1868 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1869 the thunk, as a keyword argument, :arguments.
1870 * enhancement: constraint propagation is simplified (and sped up) when
1871 COMPILATION-SPEED > SPEED.
1872 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1873 * enhancement: debugger understands &MORE arguments better.
1874 * optimization: extracting bits of a single-float on x86-64 has been
1875 optimized. (lp#555201)
1876 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1877 when (> SPEED SPACE).
1878 * optimization: local call trampolines (x86 and x86-64) are emitted
1880 * optimization: implicit value cells for dynamic-extent closed-over bindings
1881 on x86 and x86-64 can hold unboxed values as well.
1882 * meta-optimization: improved compilation speed, especially for large
1883 functions. (lp#792363 and lp#394206)
1884 * bug fix: bound derivation for floating point operations is now more
1885 careful about rounding possibly closing open bounds. (lp#793771)
1886 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1887 backwards incompatible change in 1.0.48.27)
1888 * bug fix: occasional debugger errors in when a type-error occured in a
1889 function with dynamic-extent &rest list.
1890 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1891 boa-construtors can be used to initialized structure slots.
1892 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1893 (lp#795705, regression)
1894 * bug fix: DIRECTORY works better on logical pathnames.
1895 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1896 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1897 * bug fix: the compiler no longer constant-folds NaNs in
1898 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1899 * bug fix: FORMAT now handles floating point rounding correct, eg.
1900 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1902 * bug fix: style warning during lambda-list introspection of generic
1903 functions with both optional and key argments.
1904 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1905 folding. (lp#729765)
1906 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1909 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1910 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1911 interrupts for its body.
1912 * enhancement: source locations are now available for files loaded as
1913 source, compile-time-too evaluation, and initialization files.
1914 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1915 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1916 when a temporary file is used for compilation.
1917 * enhancement: ASDF has been updated to version 2.015.3.
1918 * enhancement: backtraces involving frames from the default evaluator are
1920 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1922 * enhancement: more informative compile-time warnings and runtime errors for
1923 type-errors detected at compile-time.
1924 * enhancement: deadlock detection for mutexes and spinlocks.
1925 * enhancement: dynamic-extent for &rest lists stack allocate only their
1926 spines, not their argumets. While portable code should not rely on this,
1927 particularly in combination with inlining, it should make dynamic-extent
1928 easier to use safely.
1929 * enhancement: SB-POSIX improvements:
1930 ** WNOHANG and WUNTRACED are exported.
1931 ** SYSCALL-ERROR now also provides the name of the failing system call.
1932 * enhancement: --script improvements:
1933 ** errors on standard input, output, and error streams are handled and
1934 cause scripts to exit silently, making them easier to use in shell
1936 ** backtraces from scripts now go to standard error instead of the
1937 terminal even if one is available.
1938 ** --script can be an argument, causing the script to be loaded from
1940 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1941 strings to foreign memory.
1942 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1943 a file, making it easier to understand heap dynamics.
1944 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1945 allows the compiler to automatically elide rest-list allocation so long as
1946 the call sites are in functions that the compiler knows cannot escape.
1948 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1949 especially in safe code when none of the required arguments have changed
1951 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1952 uninterruptible, as well as blocking reads from socket streams created
1953 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1954 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1955 from the to-char if the from-char is not a dispatch-macro character.
1956 * bug fix: references to undefined variables in function calls that are
1957 optimized away now signal a runtime error. (lp#722734)
1958 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1959 types from a function defined in the same file. (regression from
1961 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1963 * bug fix: spurious errors during QUIT when standard streams were closed.
1965 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1966 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1967 years, is now no longer supported.
1968 * enhancement: read() and write() have been added to SB-POSIX.
1969 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1970 accurately, allowing better typechecking of call-sites.
1971 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1972 are no longer caught. (reverted to pre 1.0.34 behaviour)
1973 * optimization: slightly faster ISQRT. (lp#713343)
1974 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1975 * bug fix: TRACE behaves better when attempting to trace undefined
1976 functions. (lp#740717)
1977 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1978 to (FUNCALL #'(LAMBDA ...) ...).
1979 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1980 a compile-time error. (lp#720382)
1981 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1983 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1984 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1985 optimization. (regression from 1.0.45.18/1.0.46.15)
1986 * bug fix: package locks did not protects against compile-time side-effects
1987 of DEFUN. (lp#675584)
1988 * bug fix: --dynamic-space-size argument is validated more carefully.
1990 * bug fix: memory fault from printing a malformed simple-condition.
1992 * bug fix: redefining classes so that slot-definition classes change now
1993 engages the obsolete instance protocol. (lp#766271)
1994 * bug fix: constant improper lists could break source coverage recording.
1996 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1997 could exhaust stack.
1999 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
2000 * bug fix: fix mach port rights leaks in mach exception handling code on
2001 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
2003 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
2004 * enhancement: redefinition warnings for macros from different files. (lp#434657)
2005 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
2006 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
2007 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
2008 processed using EVAL -- now the appropriate toplevel form is reported instead.
2009 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
2010 declarations. (lp#726331)
2011 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
2012 that NIL/NULL is excluded from the type.
2013 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
2015 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
2016 and its compatriots.
2017 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
2018 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
2019 stack-allocated values out of their dynamic-extent. (lp#310175)
2020 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
2021 x86-64 builds caused a type-error.
2022 * bug fix: calling COMPILE with something else than a lambda-expression as the
2023 second argument reports a more sensible error. (lp#718905)
2024 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
2025 are detected. (lp#520607)
2026 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
2028 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
2029 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
2030 methods. (regression from 1.0.45.18)
2031 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
2032 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
2033 * bug fix: several foreign functions accepting string also accepted NIL and
2034 consequently caused a memory fault at 0 now signal a type-error instead.
2036 * bug fix: under rare circumstances, constraint propagation could rewrite a
2037 variable reference to refer to a variable not in scope, causing an error
2038 during physical environment analysis when attempting to close over the
2039 variable. (lp#551227)
2040 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
2042 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
2043 * enhancement: largefile support on Solaris.
2044 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
2045 arguments (lp#710017)
2046 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
2047 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
2049 * optimization: ERROR and CERROR are approximately 5 times faster.
2050 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
2051 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
2052 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
2053 up instance creation in those cases.
2054 * optimization: arithmetic operations with multiple constant arguments in now
2055 have them reduced at compile-time. (lp#676414)
2056 * optimization: determining current character position on string-streams for
2057 pretty-printing was overly slow.
2058 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
2059 lifetime analysis to overwrite closed-over variables (lp#681092).
2060 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
2061 were not handled correctly (lp#713063).
2062 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
2064 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
2065 mistake. (lp#667297).
2066 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
2067 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
2068 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
2069 unintern the wrong symbol with the same name. (lp#693796)
2070 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
2071 making it possible to restore the initial table if it has been messed up.
2074 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
2075 * enhancement: ~/ and ~user/ are treated specially in pathnames.
2076 Refer to documentation for details.
2077 * enhancement: ASDF has been updated to version 2.010.
2078 * optimization: mutated closed-over variables that are only accessed by
2079 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
2080 declared to be DYNAMIC-EXTENT) are stored directly in their containing
2081 stack frame, rather than allocating a VALUE-CELL (lp#586103).
2082 * optimization: UNWIND-PROTECT cleanup functions are now declared
2084 * bug fix: backtracing function with &REST arguments now shows the full
2085 argument list. (lp#310173)
2086 * bug fix: return types for functions with complex lambda-lists are now
2087 derived properly (lp#384892)
2088 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
2089 long string arguments slowed the compiler down to a crawl.
2090 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
2091 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
2092 in the DEFMETHOD body.
2093 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
2094 messages, being instead replaced with the corresponding function name.
2095 * bug fix: don't derive overly complex unions of numeric types for arithmetic
2096 operators. (lp#309448)
2098 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
2099 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
2100 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
2101 * enhancement: ALLOCATION-INFORMATION also provides the page the object
2103 * enhancement: default dynamic-space size can be configured at build-time
2104 without touching source, using the --dynamic-space-size argument to make.sh.
2105 * enhancement: DESCRIBE recognizes symbols naming optimization policy
2106 qualities, and mentions ALWAYS-BOUND declarations.
2107 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
2109 * enhancement: ASDF has been updated to 2.009.
2110 * enhancement: the system detects known type-erros in calls better,
2111 signalling a full warning about violated proclaimed FTYPEs and violations
2112 of derived FTYPEs within the same file, including self-calls.
2113 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
2114 * optimization: constant-folding exploits numeric and character types, in
2115 addition member types.
2116 * optimization: numeric, character and member types that are inhabited by
2117 exactly one value are tested with EQL.
2118 * optimization: more conditional branches are eliminated during IR1.
2119 Branches are simplified before performing if/if-conversion, and simple
2120 equivalent branches (that only read the same constant or variable) are
2122 * improvements to the Windows port:
2123 ** change: canonical unparsing form for pathname namestrings now uses / as
2124 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
2125 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
2126 on Windows. (thanks to Kalyanov Dmitry)
2127 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
2129 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
2130 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
2131 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
2132 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
2134 * bug fix: interrupts arriving during CL:OPEN caused an error.
2135 * bug fix: overeager character buffering could cause input to block
2136 spuriously when reading from a pipe (lp#643686)
2137 * bug fix: more efficient timer expiry should avoid starvation on systems
2138 where number of SIGALRMs per second is restricted. (lp#375515)
2139 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
2140 * bug fix: compile-times no longer scale linearly with the size of
2141 quoted lists in source-code. (lp#654289)
2142 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
2143 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
2144 so badly. (lp#654485)
2145 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
2146 an error for eg. STRUCTURE. (lp#458015)
2147 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
2148 (lp#613871, thanks to Roman Marynchak)
2149 * bug fix: more reliable &REST list type derivation. (lp#655203)
2150 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
2151 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
2152 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
2153 also declared NOTINLINE. (lp#655581)
2154 * bug fix: the compiler could attempt to emit constant left shifts of
2155 greater value than n-word-bits. (lp#309063)
2156 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
2157 type information for the function being set. (lp#659220)
2158 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
2159 containing self-calls were recompiled with a new signature, and failed
2160 to warn when a self-call using the old signature was left in. (lp#655126)
2161 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
2162 :DEFAULT when the default external had character size other than 8 bits.
2164 * bug fix: derived types of functions in the same file were implicitly
2165 trusted, leading to potential heap corruption when those function were
2166 defined incompatibly. (lp#657499)
2167 * bug fix: existing ASDF source registries are ignored when building
2168 contribs (lp#659105)
2169 * bug fix: short-form DEFSETF checks that the second argument is a symbol
2170 (lp#655824, thanks to Roman Marynchak)
2171 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
2172 package-lock violation was detected. (lp#660752)
2173 * bug fix: the system can store different docstrings for a single function
2174 under different names. (lp#661631, regression from 1.0.29.24)
2175 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
2176 properly. (lp#384801)
2177 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
2178 of specified length could confuse the type derivation in unsafe code.
2180 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
2181 fork with multiple Lisp threads running is made on every platform,
2182 not just Darwin. (lp#451111)
2183 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
2184 around when core was saved, which could cause undefined behaviour when the
2186 * bug fix: Allow UNTRACE of functions that are no longer defined
2187 (lp#667657, thanks to Attila Lendvai)
2188 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
2189 compile-time warning (lp#664373, thanks to Stas Boukarev)
2191 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
2192 * incompatible change: FD-STREAMS no longer participate in the serve-event
2193 event-loop by default. (lp#316072)
2194 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
2195 affects streams from CL:OPEN.
2196 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
2197 default, but this is liable to change: applications needing serve-event
2198 for socket streams should explicitly request it using :SERVE-EVENTS T
2200 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
2202 * enhancement: CLOS effective method functions and defclass slot typechecking
2203 function now have debug names for use in backtraces and profiles.
2204 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
2206 * enhancement: symbols are printed using fully qualified names in several
2207 error and warning messages which are often associated with package
2208 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
2209 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
2210 thanks to Andrew Golding)
2211 * bug fix: reading /proc files on Linux works. (lp#425199)
2212 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
2214 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
2215 breaking code that tried to write the value of a printer control variable.
2216 (lp#581564, thanks to Stas Boukarev)
2217 * bug fix: WRITE compiler macro did not handle output stream designators
2218 correctly. (lp#598374, thanks to Stas Boukarev)
2219 * bug fix: better availability of names of foreign functions in backtraces
2220 on Linux. (lp#626962, thanks to Stas Boukarev)
2221 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
2222 lp#627581, thanks to Josh Elsasser and Jim Wise)
2223 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
2224 thanks to Josh Elsasser)
2225 * bug fix: using aliases for builtin classes as defmethod specializers
2226 without adding DEFTYPEs for them works. (lp#618387)
2227 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
2229 * bug fix: legally dynamic-extent lists and vectors used as
2230 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
2231 * bug fix: inline-expansion creating references to dead lambda-variables
2232 (lp#454681, thanks to Alexey Dejneka)
2233 * bug fix: better error message for bogus numerical arguments to RANDOM.
2234 (lp#598986, thanks to Stas Boukarev)
2235 * bug fix: the compiler occasionally inlined references from incompatible
2236 environments occurs. (lp#308951)
2237 * bug fix: the compiler threw an error when trying to compile a local
2238 function (labels or flet) known to take a specialized complex argument.
2239 (not in launchpad, reported by sykopomp in #lispgames)
2240 * bug fix: package-locks failed to protect against compile-time effects of
2241 DEFUN when the symbol previously had a macro definition. (lp#576637)
2242 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
2243 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
2244 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
2245 * bug fix: evaluation in debugger REPL works using the global context when
2246 in frames that do not have sufficient debug information.
2247 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
2249 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
2251 * bug fix: interrupt taking longer than the requested period caused SLEEP
2252 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
2254 changes in sbcl-1.0.42 relative to sbcl-1.0.41
2256 ** Cross-compilation host is now specified to make.sh using
2257 command-line argument --xc-host=<command> instead of a positional
2258 argument. (thanks to Daniel Herring)
2259 ** Install location can be specified to make.sh using command-line
2260 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
2261 * optimization: The default implementation of
2262 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
2263 * enhancement: Explicit memory barrier operations are now available for use
2264 by multithreaded code. See documentation for details.
2265 * enhancement: Experimental support for threading on Linux/PPC.
2266 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
2267 * bug fix: EXPT signals an error if first argument is a zero and second
2268 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
2269 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
2270 (lp#576594, thanks to Roman Marynchak)
2271 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
2272 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
2274 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
2275 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
2276 cached, leading to many fewer expensive calls to
2277 COMPUTE-APPLICABLE-METHODS.
2278 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
2279 CLASS argument, search for and call an appropriate optimized ctor function
2281 * bug fix: WRITE always returns the correct value.
2283 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
2284 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
2285 * bug fix: Name conflicts between symbols passed as arguments to a single
2286 call to IMPORT no longer add multiple symbols with the same name to the
2287 package (detectable via DO-SYMBOLS).
2288 * bug fix: support building without the dlshim on darwin x86 and x86-64
2290 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
2292 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
2293 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
2295 * bug fix: linkage-table entries on PPC now no longer overflow their
2296 space allocation (potentially causing crashes if they are written out
2298 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
2299 platforms, preventing the GC from seeing stale pointers on the control
2300 stack in subsequent GCs (which would, and does, break invariants).
2301 * bug fix: 32-bit unicode external formats now work on big-endian systems.
2302 * bug fix: Literal characters with code points greater than about 32767
2303 now work on PPC UNICODE builds.
2304 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
2305 high order bits are explicitly cleared out. In some contrived situations,
2306 this could lead to wrong results in mixed real/complex float arithmetic.
2307 * bug fix: Fix function/macro redefinition warnings when building with
2308 clisp. (lp#576787, thanks to Josh Elsasser)
2309 * new platform: experimental support for ppc/openbsd (thanks to Josh
2311 * bug fix: Floating-point traps now work on ppc/linux.
2313 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
2314 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
2315 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
2316 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
2317 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
2318 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
2319 SB-THREAD:GRAB-MUTEX.
2320 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
2321 contain additional data structures and tools for concurrent programming;
2322 at the moment it contains a lock-free queue, and a lock-free mailbox
2324 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
2325 GET-MUTEX but takes &key rather than &optional parameters. Also added
2326 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
2328 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
2329 SB-THREAD:WAIT-ON-SEMAPHORE.
2330 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
2332 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
2333 conditions to defer the deadline for forever.
2334 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
2336 * enhancement: errors from NO-APPLICABLE-METHOD and
2337 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
2338 generic function call.
2339 * enhancement: SB-BSD-SOCKET improvements
2340 ** sockets and socket streams now have a more informative printed
2341 representation based on the corresponding SOCKET-NAME and
2343 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
2345 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
2346 CL:CLOSE when appropriate, and no longer disassociates the stream
2347 from the socket if close failed. (lp#543951)
2348 * improvements to the instrumenting profiler
2349 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
2350 ** optimization: counters no longer use locks for the overflow mode.
2351 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
2352 incurred an off-by-one miscount.
2353 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
2354 * enhancement: improved DEFMETHOD pretty-printing.
2355 * enhancement: perform range reduction when arguments are too large for
2356 x87's transcendentals (instead of returning 0). (lp#327192)
2357 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
2358 some of CL-PPCRE's macros. (lp#570079)
2359 * enhancement: our machine code is slightly less hostile to valgrind on
2361 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
2362 to Robert Swindells and Aleksej Saushev)
2363 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
2364 * bug fix: a rare case of startup-time page table corruption.
2365 * bug fix: a semaphore with multiple waiters and some of them unwinding due
2366 to timeouts could be left in an inconsistent state.
2367 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
2368 * bug fix: misoptimization of multiplication by one in
2369 (SB-C::FLOAT-ACCURACY 0) policies.
2370 * bug fix: miscounts in SB-PROFILE.
2371 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
2372 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
2373 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
2374 up itself" (March 2010) for further details.
2375 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
2376 against length of the list if the element is found before the specified
2377 END is reached. (thanks to Alec Berryman, lp#554385)
2378 * bug fix: errors signalled during package graph modification no longer
2379 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
2380 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
2381 :SB-DOC feature. (lp#552564)
2382 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
2383 * bug fix: more robust runtime executable path detection. (lp#375549)
2384 * bug fix: GCD always returns positive values. (lp#413680)
2385 * bug fix: Converting division to multiplication by reciprocal handles
2387 * bug fix: We were too eager in eliding range reduction tests on x87.
2388 The maximal magnitude is 2^63, not 2^64.
2389 * bug fix: Transforms for TRUNCATE don't die when the result is completely
2391 * bug fix: Maybe restore buildability on Alpha.
2392 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
2394 * bug fix: RANDOM-STATE can be printed readably again.
2395 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
2396 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
2397 types) could result in type mismatches during compilation.
2399 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
2400 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
2401 stack frame thrown from.
2402 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
2403 compiler optimization qualities inside dynamic extent of its body.
2404 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
2405 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
2407 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
2408 constraint propgation, allowing better compilation eg. when used to
2409 access structures with WITH-SLOTS. (lp#520366)
2410 * optimization: the compiler is now more aware of the type of the underlying
2411 storage vector for multidimensional simple arrays resulting in better code
2412 for accessing such arrays.
2413 * optimization: passing NIL as the environment argument to TYPEP no longer
2414 inhibits optimizing it. (lp#309788)
2415 * optimization: more efficient register usage when handling single-float
2416 arguments on x86-64. (thanks to Lutz Euler)
2417 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
2418 pre-allocated temporary vectors. (lp#496249)
2419 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
2420 in :INITIAL-CONTENTS. (lp#523612)
2421 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
2422 functions. (lp#524707)
2423 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
2424 WITH-SLOTS usages during compilation.
2425 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
2426 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
2427 all x86oid platforms with :UD2-BREAKPOINTS target feature.
2428 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
2429 instruction (tested on x86oid linux with ud2-breakpoints).
2430 * bug fix: slam.sh now works on win32.
2431 * bug fix: better differences of numeric types. (lp#309124)
2432 * bug fix: arrays declared intersection and union types can have their
2433 upgraded element type derived. (lp#316078)
2434 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
2435 threads started during profiling. (lp#472499)
2436 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
2438 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
2439 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
2440 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
2441 values instead of signaling an error. (lp#309093)
2442 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
2444 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
2445 declarations (lp#497321)
2446 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
2447 and failed to detect circular lists (lp#452008)
2448 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
2450 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
2451 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
2452 due to it, so that handlers can run.
2453 * bug fix: reparsing undefined types if they have become defined since
2454 parsing. (lp#309128)
2455 * bug fix: missing &REST type in a proclamation for a function with both
2456 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
2457 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
2458 expanded calls (lp#542174)
2459 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
2460 than just at toplevel form.
2462 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
2463 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
2464 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
2465 but work on type specifiers.
2466 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
2467 to name a type specifier.
2468 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
2469 specifier is valid where "valid" basically means "would be accepted as
2470 second argument of TYPEP".
2471 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
2472 returns the function's declared, or derived FTYPE.
2473 * new feature: SB-POSIX now supports accessing the d_ino member of
2474 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
2475 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
2476 provide for seeding a RANDOM-STATE object with user-provided data or
2477 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
2478 attempt to initialize the returned state from the operating system's
2479 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
2480 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
2481 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
2482 * bug fix: Fix grammar and style issues for the docstrings of
2483 printer-related variables and functions. (Thanks to mon_key; launchpad
2485 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
2487 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
2488 in a row even though a handler defered the deadline long into the
2490 * bug fix: A deadline handler was run without interrupts enabled for a
2491 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
2492 in infinitely spinning, non-killable threads.
2493 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
2494 before reaching the erring stack frame.
2495 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
2496 real power. (launchpad bug lp#525949)
2497 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
2498 GENCGC platforms. (launchpad bug lp#529014)
2499 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
2500 (launchpad bug lp#525916)
2501 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
2502 (Thanks to Robert Goldman)
2504 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
2505 * optimization: ROUND with a single single-float or double-float argument
2506 is properly inlined when possible.
2507 * optimization: Slightly better code is generated for integer<->float
2508 conversions and for single-float<->double-float conversions on x86-64.
2509 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
2510 code for 32-bit and 64-bit rotations on x86-64.
2511 * bug fix: The install script changes the ownership of directories as well
2512 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
2513 launchpad bug lp#508485)
2514 * bug fix: TRUNCATE with a single single-float or double-float argument is
2515 properly inlined when possible. (launchpad bug lp#489388)
2516 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
2517 no longer causes a compiler error on x86 and ppc.
2518 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
2519 always relative to *READTABLE* rather than the passed argument.
2521 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
2522 * minor incompatible change: threading support is now enabled by default
2524 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
2526 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
2527 are now caught and reported just like errors during macroexpansion.
2528 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
2529 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
2530 * enhancement: ASDF systems can now depends on SB-QUEUE.
2531 * fixes and improvements related to Unicode and external formats:
2532 ** bug fix: error handling and restart usage in the ucs-2 external format
2534 ** there is now an implementation of the ucs-4 external format.
2535 ** the utf-16 and utf-32 external formats are supported.
2536 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
2537 in the environment. setenv() and unsetenv() are also provided. (reported by
2538 Fare Rideau; launchpad bug lp#460455)
2539 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
2540 loading. This ensures sensible errors for .FASL files from other
2541 implementations on case-insensitive filesystems. (reported by Willem
2542 Broekema; launchpad bug lp#489417)
2543 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
2544 Willem Broekema; launchpad bug lp#489698).
2545 * bug fix: some minor code rearrangements to reenable warning-free building
2546 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
2547 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
2549 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
2552 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
2553 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
2554 * improvement: support O_LARGEFILE access to files larger than 2GB on
2555 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
2556 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
2557 definitions for methods specializing on the passed class itself.
2558 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
2559 definitions for methods specializing on the passed class itself, or on
2561 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
2562 about itself during the build (e.g. for M-? in Slime), if this flag is
2563 enabled in customize-target-features.lisp. This will increase the core
2564 size by about 5-6mb, though, so it's mostly interesting to SBCL
2566 * new feature: various GENCGC tuning parameters have been experimentally
2567 documented and exported from SB-EXT. See documentation for details.
2568 * fixes and improvements related to Unicode and external formats:
2569 ** the Unicode character database has been upgraded to the
2570 Unicode 5.2 standard, giving names and properties to a number of new
2571 characters, and providing a few extra characters with case
2573 ** improvement: restarts for providing replacement input/output on coding
2574 errors for fd-stream external formats.
2575 ** improvement: where :<encoding> is a keyword corresponding to an
2576 external format the system supports, it is now possible to specify
2577 (:<encoding> :replacement <character>) as an external format which will
2578 automatically substitute <character> on encoding or decoding errors for
2579 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
2581 ** improvement: the file streams underlying the standard streams (such as
2582 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
2583 which uses the replacement mechanism to handle encoding errors,
2584 preventing various infinite error chains and unrecoverable I/O
2586 ** minor incompatible change: the utf-8 external format now correctly
2587 refuses to encode Lisp characters in the surrogate range (char-codes
2588 between #xd800 and #xdfff).
2589 ** fix a typo preventing conversion of strings into octet vectors
2590 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
2592 ** fix a bug in the octet multibyte handling of decoding errors and the
2593 USE-VALUE restart. (launchpad bug lp#314939)
2594 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
2595 restart on fd-stream decoding errors.
2596 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
2597 error is near the end of file.
2598 ** fix a double-error case in unibyte octet conversions, when the first
2599 use of USE-VALUE is ignored.
2600 ** fix bugs in handling of undefined code points in unibyte encodings.
2601 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
2602 streams after an UNREAD-CHAR.
2603 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
2604 object is allocated in a boxed region of dynamic space.
2605 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
2606 fork with multiple Lisp threads running is made, instead of going
2607 ahead with unpredictable consequences. (reported by Leslie Polzer)
2608 * bug fix: uses of slot accessors on specialized method parameters within
2609 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
2610 error while finalizing the class. This fix may cause classes with slot
2611 accessors to be finalized later than previously. (reported by Lars Rune
2612 Nøstdal; launchpad bug lp#473699)
2613 * bug fix: restore buildability on the MIPS platform. (regression from
2614 1.0.30.38, reported by Samium Gromoff)
2615 * bug fix: inspecting closures is less likely to fail with a type error.
2616 * bug fix: no timer starvation when setting the system clock back.
2617 (launchpad bug lp#460283)
2618 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
2619 standard pprint dispatch table as specified by CLHS.
2620 * bug fix: give CLISP a hint about a type declaration to enable it to build
2621 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
2623 * bug fix: correctly dump literal objects in defaulting forms of arglists.
2624 (reported by Attila Lendvai; launchpad bug lp#310132)
2625 * bug fix: distinguish in type specifiers between arrays that might be
2626 complex and arrays that are definitely complex. (launchpad bug lp#309129)
2627 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
2628 type. (reported by Levente Mészáros; launchpad bug lp#485972)
2629 * bug fix: setting the value of a symbol-macro within a method in the
2630 presence of type declarations works properly again. (reported by Iban
2631 Hatchondo; launchpad bug lp#485019)
2633 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
2634 * optimization: faster FIND and POSITION on strings of unknown element type
2635 in high SPEED policies. (thanks to Karol Swietlicki)
2636 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
2638 * improvement: better error signalling for bogus parameter specializer names
2639 in DEFMETHOD forms (reported by Pluijzer)
2640 * bug fix: DELETE-FILE once again works on logical pathnames (regression
2642 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
2644 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
2645 removes previous default initargs (reported by Lars Rune Nøstdal and
2647 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
2648 lambda-lists. (reported by Peter Seibel)
2649 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
2650 correctly when starting from an executable core without saved runtime
2651 options (reported by Faré Rideau, thanks to Zach Beane)
2652 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
2653 an optimization note instead. (reported by Martin Cracauer)
2654 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
2655 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
2656 new process group if it doesn't need to share stdin with the sbcl
2657 process. (thanks to Leslie Polzer)
2658 * bug fix: SATISFIES could be misoptimized to refer to a local function.
2659 (reported by Stanislaw Halik)
2661 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
2662 * improvement: stack allocation is should now be possible in all nested
2663 inlining cases: failure to stack allocate when equivalent code is manually
2664 open coded is now considered a bug.
2665 * improvements related to Unicode:
2666 ** the Unicode character database has been upgraded to the
2667 Unicode 5.1 standard, giving names and properties to a number of new
2668 characters, and providing a few extra characters with case
2670 ** the system now recognizes and produces names for Unicode Hangul
2671 syllable characters.
2672 ** the EBCDIC-US external-format is now supported for octet operations
2673 (as well as for stream operations).
2674 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
2675 be used to output toplevel compile-time effects into a separate .CFASL
2677 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
2678 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
2680 * optimization: TRUNCATE on known single- and double-floats is upto 25%
2682 * optimization: division of floating point numbers by constants uses
2683 multiplication by reciprocal when an exact reciprocal exists.
2684 * optimization: multiplication of single- and double-floats floats by
2685 constant two has been optimized.
2686 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
2687 sufficient type information is available. (thanks to Leslie Polzer)
2688 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
2689 known structure objects are as efficient as defstruct generated accessors.
2690 * optimization: unused vector creation can now be optimized away.
2691 * improvement: ASDF systems can now depends on SB-INTROSPECT.
2692 * improvement: a STYLE-WARNING is signalled when a generic function
2693 clobbers an earlier FTYPE proclamation.
2694 * improvement: the compiler is able to track the effective type of
2695 generic function across method addition and removal even in the
2696 absence of an explicit DEFGENERIC.
2697 * improvement: DESCRIBE now reports on symbols naming undefined
2698 but assumed or declared function as well.
2699 * improvement: recompilation of systems using SB-GROVEL now works
2700 (thanks to Leslie Polzer)
2701 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
2702 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
2704 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
2705 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
2706 well as user defined declaration names.
2707 ** VARIABLE-INFORMATION is now aware of alien variables.
2708 * improvement: improved address space layout on OpenBSD (thanks to Josh
2710 * improvement: pretty-printing of various Lisp forms has been improved
2711 (thanks to Tobias Rittweiler)
2712 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
2713 unused were deleted in safe code. (reported by John Fremlin)
2714 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
2716 * bug fix: some out-of-line array predicates were missing (reported by
2718 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
2720 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
2721 (thanks to Larry D'Anna)
2722 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
2723 as well. (reported by Josh Elsasser)
2724 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
2725 leading to possible attempts to delete the same file twice. See docstring
2726 on DELETE-FILE for details. (reported by John Fremlin)
2727 * bug fix: DELETE-FILE once again deletes the file named by the pathname
2728 designator argument, rather than its truename. (reported by Luis
2730 * bug fix: the low-level debugger had 32-bit assumptions and was missing
2731 information about some array types. (thanks to Luis Oliveira)
2732 * bug fix: moderately complex combinations of inline expansions could
2733 be miscompiled if the result was declared to be dynamic extent.
2734 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
2735 form (+ <variable> <integer>) were miscompiled under certain
2737 * bug fix: in some cases no compiler note about failure to stack allocate
2738 was emitted, even if the objects were in fact heap allocated.
2739 * bug fix: minor violation of "otherwise inaccessible" rule for stack
2740 allocation could cause objects users might reasonably expect to
2741 be heap allocated to be stack allocated.
2742 * bug fix: DESCRIBE signalled an error for generic functions under
2743 certain circumstances. (thanks to Leslie Polzer)
2744 * bug fix: Fixed spelling of an error message.
2746 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
2747 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
2748 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
2749 of SB-THREAD:THREAD-ERROR-THREAD.
2750 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
2751 * new feature: docstrings for local and anonymous functions are no longer
2752 discarded. (thanks to Leslie Polzer)
2753 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
2754 values in other threads.
2755 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
2756 about object allocation.
2757 * optimization: division of a real float by a complex float is implemented
2758 with a specialised code sequence.
2759 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2760 keywords is an order of magnitude faster.
2761 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2762 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2763 methods, and similarly for non-standard metaclass classes as long as there
2764 are no methods additional on MAKE-INSTANCE.
2765 * optimization: more efficient type-checks for FIXNUMs when the value
2766 is known to be a signed word on x86 and x86-64.
2767 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2768 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2770 * optimization: compiler is smarter about delegating argument type checks to
2772 * optimization: several character functions are now compiled somewhat more
2773 efficiently. (reported by Lynn Quam)
2774 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2775 * improvement: less unsafe constant folding in floating point arithmetic,
2776 especially for mixed complex/real -float operations.
2777 * optimization: constant double and single floats are stored in native
2778 unboxed format on x86[-64].
2779 * optimization: smarter code for arithmetic operations with constant floats,
2780 complex floats, or integers on x86[-64].
2781 * optimization: smarter code for conjugate/multiplication of float complexes
2782 and abs/negate of floats on x86-64.
2783 * optimization: more efficient complex float and real float operations on
2785 * improvement: complex float division is slightly more stable.
2786 * improvement: DESCRIBE output has been reworked to be easier to read and
2787 contains more pertinent information.
2788 * improvement: failure to provide requested stack allocation compiler notes
2789 provided in all cases (requested stack allocation not happening without a
2790 note being issued is now considered a bug.)
2791 * bug fix: SB-POSIX exports the documented types and functions
2792 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2793 types. (reported by "abhi")
2794 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2795 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2796 (thanks to Paul Khuong)
2797 * bug fix: looping around HANDLER-CASE could silently consume stack space
2798 on each iteration. (reported by "foobar")
2799 * bug fix: better error signalling when calls to functions seeking elements
2800 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2801 (reported by Tobias Rittweiler)
2802 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2803 directory components now works as it used to. (various prolems reported by
2804 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2805 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2806 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2807 * bug fix: bogus undefined variable warnings from fopcompiled references to
2808 global variables. (thanks to Lars Rune Nøstdal)
2809 * bug fix: foreign function names should now appear in backtraces on
2810 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2811 * bug fix: SETF compiler macro documentation strings are not discarded
2813 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2814 (thanks to Alex Plotnick)
2815 * bug fix: SLEEP accepts large integer arguments, truncating them to
2816 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2817 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2818 * bug fix: compiler notes for expensive slot type checks could be emitted
2819 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2821 changes in sbcl-1.0.29 relative to 1.0.28:
2822 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2823 https://bugs.launchpad.net/sbcl
2824 Bugs can be reported directly there, or by sending email to
2825 sbcl-bugs@lists.sourceforge.net
2826 (no subscription required.)
2827 * minor incompatible change: under weak type checking policy integer
2828 types are weakened less aggressively.
2829 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2830 allowed to return, which causes SBCL to quit with exit status 0. Previously
2831 if the function returned with a small integer return value, that value
2832 was accidentally reused as the exit status.
2833 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2834 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2835 :HASH-FUNCTION argument. Refer to user manual for details.
2836 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2838 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2839 microseconds since the Unix epoch on all platforms.
2840 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2841 allows the compiler to safely elide boundedness checks for special
2843 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2844 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2845 efficiency measure for threaded platforms, but also valueable in
2847 * new feature: UNC pathnames are now understood by the system on Windows.
2848 * optimization: the compiler uses a specialized version of FILL when the
2849 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2851 * optimization: accesses to potentially non-simple arrays where element type
2852 is known are 50% faster.
2853 * optimization: compiler now generates faster array typechecking code.
2854 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2856 * optimization: multidimensional array accesses in the absence of type
2857 information regarding array rank are approximately 10% faster due to
2858 open coding of ARRAY-RANK.
2859 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2860 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2862 * optimization: result of call to VECTOR can now be stack allocated.
2863 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2864 as long as the resulting array is one-dimensional and has a known
2865 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2866 length of the list matches the known length of the vector does not
2867 allocate the list as an intermediate step. Ditto for VECTOR and simple
2869 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2870 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2871 known element type, and is known to be simple and one dimensional.
2872 * improvement: SBCL now emits a compiler note where stack allocation was
2873 requested but could not be provided (not in all cases, unfortunately)
2874 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2875 * improvement: pretty-printing loop has been implemented properly. (thanks
2876 to Tobias Rittweiler)
2877 * documentation: CLOS slot typechecing policy has been documented.
2878 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2879 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2880 pointer, leading to memory faults. (thanks to Bart Botta)
2881 * bug fix: better floating point exception handling on x86/OpenBSD.
2882 (thanks to Josh Elsasser)
2883 * bug fix: exit status from QUIT when called under --script was lost
2884 (reported by Hubert Kauker)
2885 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2886 same implementation of FILL to initialize the array, even if a more
2887 efficient one was available (reported by Stas Boukarev, thanks to
2889 * bug fix: potential miscompilation of array stack allocation on x86 and
2890 x86-64. (reported by Time Tossavainen)
2891 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2892 result in their subforms being treated as top level forms. (reported by
2894 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2895 than a machine register could leave garbage in the high bits of the
2896 result register (bug 316325).
2897 * bug fix: disable address space randomization Linux/x86-64 as well,
2898 not just x86-64. (reported by Ken Olum)
2899 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2900 generate incorrect code.
2901 * bug fix: #201; type inference for CONS and ARRAY types could derive
2902 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2903 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2904 could not be assigned to or bound with PROGV. (reported by Lorenz
2906 * bug fix: the value of CL:- in the inspector was the previous expression
2907 evaluated rather than the expression being evaluated.
2908 * bug fix: constants can no longer be locally declared special.
2909 * bug fix: signals delivered to threads started from foreign land (read:
2910 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2911 thread by blocking all signals and resignalling.
2912 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2913 from :INITFORM, if any.
2915 changes in sbcl-1.0.28 relative to 1.0.27:
2916 * a number of bugs in cross-compilation have been fixed, with the ultimate
2917 result that building under (at least) clisp should be much more reliable.
2918 * minor incompatible changes: echo-streams now propagate unread-char to the
2919 underlying input stream, and no longer permit unreading more than one
2921 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2922 frames, allowing for instance more reliable backtraces.
2923 * improvement: the debugger REPL can now reference lexical variables
2924 by name directly for code compiled with (DEBUG 3).
2925 * improvement: errors from malformed declarations now have better source
2926 paths associated with them. (thanks to Tobias Rittweiler)
2927 * optimization: faster local calls on x86/x86-64
2928 * bug fix: some error messages for out-of-bound array indexes confused the
2929 index and the bound. (thanks to Stas Boukarev)
2930 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2932 * bug fix: running regressions tests in shells without OSTYPE set now works.
2933 (reported by Harald Hanche-Olsen)
2934 * bug fix: more robust static space exhaustion signalling from
2935 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2936 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2937 docstring away instead of storing it under names such as (LAMBDA (X)).
2938 (reported by Leslie Polzer)
2939 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2940 (thanks to Ole Arndt for the patch)
2941 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2942 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2943 potentially-invalid effective methods in its cache.
2944 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2945 instances as well (thanks to Paul Khuong)
2946 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2947 SB-POSIX:WAITPID and their C equivalents.
2948 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2950 changes in sbcl-1.0.27 relative to 1.0.26:
2951 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2952 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2953 * improvement: the system either recovers from stack exhaustion or dies
2954 properly as opposed to leaving the user uncertain of whether the handler
2955 trampled on some random memory next to the stack or having to rely on
2956 --lose-on-corruption (which is still a good idea to use in production
2957 because stack exhaustion can happen in signal handlers which will likely
2959 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2960 1.0.25.37, reported by Harald Hanche-Olsen)
2961 * bug fix: work around signal delivery bug in darwin (regression from
2962 1.0.25.44, reported by Sidney Markowitz)
2963 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2965 changes in sbcl-1.0.26 relative to 1.0.25:
2966 * incompatible change: an interruption (be it a function passed to
2967 INTERRUPT-THREAD or a timer function) runs in an environment where
2968 interrupts can be enabled. The interruption can use
2969 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2970 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2971 potentially running out of stack. Keep in mind that in the absence
2972 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2973 acquiring a lock can enable interrupts.
2974 * incompatible change: GC-OFF and GC-ON are removed, as they were
2975 always unsafe. Use WITHOUT-GCING instead.
2976 * new feature: runtime option --disable-ldb
2977 * new feature: runtime option --lose-on-corruption to die at the
2978 slightest hint of possibly non-recoverable errors: running out of
2979 memory, stack, alien stack, binding stack, encountering a memory
2980 fault, etc. In the absence of --lose-on-corruption a warning is
2982 * enhancement: detect binding stack exhaustion
2983 * enhancement: detect alien stack exhaustion on x86/x86-64
2984 * improvement: generally more stable and reliable interrupt handling
2985 * improvement: there is a per thread interruption queue,
2986 interruptions are executed in order of arrival
2987 * improvement: a repeating timer reschedules itself when the it has
2988 finished, but expiration times are spaced equally. If an
2989 expiration time is in the past it will trigger after a short grace
2990 period that may give a chance to other things to run.
2991 * optimization: slightly faster gc on multithreaded builds
2992 * optimization: faster WITHOUT-GCING
2993 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2994 important locks so that the debugger/handler doesn't produce
2995 recursive errors or deadlock.
2996 * bug fix: real-time signals are not used anymore, so no more
2997 hanging when the system wide real-time signal queue gets full.
2998 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
3000 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
3001 * bug fix: fix random memory faults related to interrupts on alpha
3002 * bug fix: fix random memory faults related to interrupts on sparc
3003 * bug fix: fix deadlocks related to starting threads
3004 * bug fix: fix deadlines on locks on futex platforms
3005 * bug fix: restore errno in signal handlers
3006 * bug fix: fix deadlocks related to hash tables
3007 * bug fix: fix deadlocks in pcl
3009 changes in sbcl-1.0.25 relative to 1.0.24:
3010 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
3011 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
3012 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
3013 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
3014 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
3015 better name and does not return values so stale on multiprocessor systems.
3016 Also, HOLDING-MUTEX-P was added for about the only sane usage of
3018 * improvement: unithread builds keep track of MUTEX-VALUE.
3019 * improvement: reading from a TWO-WAY-STREAM does not touch the output
3020 stream anymore making it thread safe to have a concurrent reader and
3021 a writer, for instance, in a pipe.
3022 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
3023 arguments, making compiler-macros for SETF-functions able to inspect
3024 their constant arguments.
3025 * improvement: COMPILE-FILE reports times with millisecond accuracy
3026 (thanks to Luis Oliveira)
3027 * optimization: CHAR-CODE type derivation has been improved, making
3028 TYPEP elimination on subtypes of CHARACTER work better. (reported
3029 by Tobias Rittweiler, patch by Paul Khuong)
3030 * bug fix: setting alien structure fields of type struct by value now
3031 computes the right offset for the memory copy.
3032 * bug fix: compilation problem involving inlined calls to aliens with
3033 result type VOID. (reported by Ken Olum)
3034 * bug fix: #235a; sequential inline expasion in different policies no
3035 longer reuses the functional from the previous expansion site.
3036 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
3037 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
3038 * bug fix: named ENUMs in multiply-referenced alien record types no longer
3039 cause an implied type redefinition. Regression from 1.0.21.29.
3040 * bug fix: sign-extension of small signed return values now works with C
3041 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
3042 * improvements to the Windows port:
3043 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
3044 Westfold, thanks to Rudi Schlatte)
3046 changes in sbcl-1.0.24 relative to 1.0.23:
3047 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
3048 vector of a multidimensional SIMPLE-ARRAY.
3049 * new feature: the system now signals a continuable error if standard
3050 readtable modification is attempted. (thanks to Tobias Rittweiler)
3051 * new feature: DIRECTORY has been extended with a non-standard keyword
3052 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
3053 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
3054 has been robustified and documented better. (thanks to Robert Goldman)
3055 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
3056 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
3057 * tradeoff: constant FORMAT control strings are now compiled unless
3058 SPACE > SPEED (previously only when SPEED > SPACE.)
3059 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
3061 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
3063 * bug fix: lexical type declarations are now correctly reported by
3064 SB-CLTL2. (reported by Larry D'Anna)
3065 * bug fix: STRING-TO-OCTETS did not handle :START properly when
3066 using UTF-8 as external format. (thanks to Luis Oliveira)
3067 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
3068 are signalled correctly. (thanks to Stas Boukarev)
3069 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
3070 designator. (thanks to Tobias Rittweiler)
3071 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
3072 designator, and returns T instead of the function. (thanks to
3074 * bug fix: direct superclasses of STANDARD-CLASS and
3075 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
3076 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
3077 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
3078 when no class with the named slot yet exists no longer causes a
3079 compile-time style-warning.
3080 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
3081 in safe code. (reported by Didier Verna)
3082 * bug fix: #430; nested structure constructors can stack allocate.
3083 * bug fix: on some 64-bit platforms dynamic space size was truncated
3084 to #xffff0000 bytes. (reported by Benjamin Lambert)
3085 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
3086 REPL unusable. (reported by Daniel Herring)
3087 * bug fix: return values of READ-SEQUENCE did not take :START into
3088 account on file streams, regressions since 1.0.12.22. (reported by
3089 Thomas Russ, patch by Paul Khuong)
3090 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
3091 method specializer used to confuse permuation vector optimization.
3092 * bug fix: system inserted bogus implicit type declarations for local
3093 special variables in DEFMETHOD bodies.
3094 * bug fix: #354; duplicated frames in backtraces due to
3095 non-tail-call-optimized XEPs to functions with return type NIL
3097 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
3098 initializes structure object slots according to DEFSTRUCT initforms,
3099 and DEFSTRUCT forms :INCLUDEind structure classes defined using
3100 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
3101 (reported by Bruno Haible and Stephen Wilson)
3102 * bug fix: #395; fill-pointer output streams used now support
3103 element-type BASE-CHAR as well.
3104 * bug fix: compiler error when attempting to derive return value of
3105 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
3107 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
3109 * bug fix: Mac OS X binaries should now be portable between Leopard
3112 changes in sbcl-1.0.23 relative to 1.0.22:
3113 * enhancement: when disassembling method functions, disassembly
3114 for the associated fast function is also produced.
3115 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
3117 * optimization: printing with *PRINT-PRETTY* true is now more
3118 efficient as long as the object being printed doesn't require
3119 special handling by the pretty printer.
3120 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
3121 now interact correctly with type declarations.
3122 * partial bug fix: PCL detects infinite recursion during wrapper
3123 validation. (thanks to Attila Lendvai)
3124 * bug fix: #426; nested function calls are inlined properly.
3125 Previously if FOO was an inline function, in calls of the form
3126 (FOO (FOO ...)) the outer call was not inlined.
3127 * bug fix: long long arguments passed in registers to alien
3128 functions on PowerPC Linux and NetBSD are now handled correctly
3129 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
3131 changes in sbcl-1.0.22 relative to 1.0.21:
3132 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
3133 for the shared object in the current directory, but passes the native
3134 namestring of the designated pathname to the operation system's shared
3135 object loading function as-it.
3136 * minor incompatible change: --disable-debugger toplevel option now takes
3137 effect before processing of initialization files and --eval or --load
3139 * new feature: new commandline argument: --script, which supports
3140 shebang lines. See documentation for details. (based on work by
3142 * new feature: SAVE-LISP-AND-DIE can save current values of
3143 --dynamic-space-size and --control-stack-size in the executable core,
3144 causing it to skip normal runtime option processing. See documentation
3145 for details. (thanks to Zach Beane)
3146 * enhancement: inoccous calls to EVAL or generic functions dispatching
3147 on subclasses of eg. STREAM no longer cause compiler notes to appear.
3148 * enhancement: the system no longer resignals errors from --load and
3149 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
3150 associated with the original error to be lost. (thanks to Ariel
3152 * enhancement: :DONT-SAVE keyword argument has been added to
3153 LOAD-SHARED-OBJECT for controlling interaction with
3154 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
3155 the effects of an earlier LOAD-SHARED-OBJECT call.
3156 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
3157 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
3158 provided. (reported by Cedric St-Jean)
3159 * bug fix: circularity handling in the reader did not treat raw
3160 structure slots correctly. (reported by Cedric St-Jean)
3161 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
3162 file descriptors when there were none.
3163 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
3164 was broken. (reporteed by Willem Broekema)
3165 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
3166 pathnames without a directory.
3167 * bug fix: COMPILE-FILE did not warn about undefined variable
3168 references at toplevel, and LOAD of the resulting fasl did
3169 not signal an error.
3170 * bug fix: functions with non-required arguments used to end up with
3171 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
3172 * bug fix: redefining a function with non-required arguments didn't
3173 update the system's knowledge about its call signature properly.
3174 * bug fix: fixed #431; incompatible alien record type redefinitions
3175 are detected and handled. (reported by Neil Haven)
3176 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
3177 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
3179 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
3180 after alien stack frames.
3181 * bug fix: strings passed to mk{s,d}temp lacked null termination
3183 changes in sbcl-1.0.21 relative to 1.0.20:
3184 * new feature: the compiler is able to track the effective type of a
3185 generic function across method addition and removal.
3186 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
3187 appropriately typed structure slots without locking.
3188 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
3189 information like those gathered by TIME using a programming-friendly
3191 * new feature: TIME reports time taken even if the form performs a
3192 non-local transfer of control.
3193 * enhancement: reduced conservativism on GENCGC platforms: on
3194 average 45% less pages pinned (measured from SBCL self build).
3195 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
3196 mutate constant symbols or violate declaimed type of the symbol.
3197 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
3198 sleeping on the semaphore in heavily contested semaphores.
3199 * bug fix: semaphores and condition variables were not interrupt
3201 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
3202 owned by other threads anymore.
3203 * bug fix: FIND on lists called KEY outside the specified
3204 subsequence. (reported by budden)
3205 * bug fix: LOG doesn't use single-float intermediate results when
3206 given mixed integer and double-float arguments, leading to better
3207 precision. (reported by Bob Felts)
3208 * bug fix: LOG with base zero returned values of inconsistent type.
3210 changes in sbcl-1.0.20 relative to 1.0.19:
3211 * minor incompatible change: OPTIMIZE qualities
3212 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
3213 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
3214 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
3215 * documentation: some slot access efficiency guidelines have been
3216 added to the user manual.
3217 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
3218 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
3219 as ASSOC and MEMEBER.
3220 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
3221 to more efficient EQ-comparison versions more often.
3222 * optimization: enhanced derivation of DOLIST iteration variable type
3224 * optimization: constant folding of simple (LIST ...) forms as DOLIST
3226 * optimization: runtime lookup of function definitions can be
3227 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
3228 * optimization: compiler is able to derive the return type of
3229 (AREF (THE STRING X) Y) as being CHARACTER.
3230 * optimization: CLRHASH on empty hash-tables no longer does pointless
3231 work. (thanks to Alec Berryman)
3232 * optimization: REPLACE deftransforms don't punt when :START1 or
3234 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
3235 no longer emits a code deletion note. (reported by Andrew
3237 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
3238 functions with an odd number of &OPTIONAL arguments, a &REST
3239 argument, and one or more &KEY arguments at the call site.
3240 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
3241 arguments appeared at call sites as well.
3242 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
3243 READ-LINE &co can no longer read from them afterwards. (reported
3245 * bug fix: fixed #427: unused local aliens no longer cause compiler
3246 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
3248 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
3249 alien-stack leakage. (reported by Andy Hefner)
3250 * bug fix: PROGV signals an error when an attempt to violate declared
3251 type of a variable or bind a constant is made.
3252 * bug fix: SET signals an error when an attempt to violate declared
3253 type of a variable is made.
3254 * bug fix: restart computation during the execution of a restart
3255 test function no longer causes infinite recursion. (reported by
3257 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
3258 signals an error. (thanks to Pierre Mai)
3259 * bug fix: EXPORT left symbol unexported in conflict situations.
3260 (thanks to Michael Weber)
3261 * bug fix: correctly handle name conflicts involving CL:NIL.
3262 (thanks to Michael Weber)
3263 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
3264 conflicts arising from USEing package with conflicting symbols
3265 correctly. (thanks to Michael Weber)
3267 changes in sbcl-1.0.19 relative to 1.0.18:
3268 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
3269 warnings that go otherwise unhandled will be muffled if they are
3270 of the type that's the value of this variable.
3271 * optimization: stack allocation is slightly more efficient on x86
3273 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
3274 where a raw slot always is initialized using the initform whose
3275 type is not know sufficiently well a compile-time are now compiled
3276 correctly. (reported by John Morrison)
3277 * bug fix: compiler no longer makes erronous assumptions in the
3278 presence of non-foldable SATISFIES types.
3279 * bug fix: stack analysis missed cleanups of dynamic-extent
3280 arguments in non-let-converted calls to local functions.
3281 * improvements to the Windows port:
3282 ** adjusted address spaces for building on both Win32 and
3283 Win64. (thanks for John Connors)
3284 * fixed some bugs revealed by Paul Dietz' test suite:
3285 ** interval arithmetic during type derivation used inexact integer
3286 to single-float coercions.
3287 ** arithmetic operations involving large integers and single
3288 floats give the same results in compiled and interpreted code.
3289 ** deriving the result type of COERCE no longer signals an error
3290 if the derived type of the second argument is a MEMBER type
3291 containing invalid type specifiers.
3292 ** ADJOIN with constant NIL as second argument works correctly.
3293 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
3295 changes in sbcl-1.0.18 relative to 1.0.17:
3296 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
3297 profiles only the current thread.
3298 * minor incompatible change: changes to SYMBOL-VALUE of constants
3299 defined with DEFCONSTANT now signal an error.
3300 * enhancement: SB-SPROF now has support for wallclock profiling,
3301 and is also able to profile specific threads. REPORT output
3302 has also additional sorting options.
3303 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
3305 * optimization: structure allocation has been improved
3306 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
3307 ** out of line constructors are ~10% faster.
3308 ** inline constructors are ~15% faster.
3309 ** inline constructors are capable of dynamic extent allocation
3310 (generally on x86 and x86-64, in some cases on other platforms
3312 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
3314 * optimization: file compiler is now able to coalesce non-circular
3315 lists, non-base strings, and bit-vectors. Additionally, constants
3316 are never referenced through SYMBOL-VALUE at runtime.
3317 * optimization: code defining methods on PRINT-OBJECT (and other
3318 generic functions in the COMMON-LISP package) now loads faster.
3319 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
3321 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
3322 fasl is now deleted. (reported by Attila Lendvai)
3323 * bug fix: READ-LINE always returned NIL for the last line in files.
3324 (reported by Yoshinori Tahara)
3325 * bug fix: more accurate disassembly annotations of foreign function
3326 calls. (thanks to Andy Hefner)
3327 * bug fix: trimming non-simple strings and non-string string
3328 designators when the there is nothing to trim works properly.
3329 (thanks to James Knight)
3330 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
3331 (thanks to Travis Cross)
3332 * fixed some bugs revealed by Paul Dietz' test suite:
3333 ** NIL is a valid function name (regression at 1.0.13.38)
3334 ** FILL on lists was missing its return value (regression at 1.0.12.27)
3335 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3336 fill pointers properly (regression at 1.0.12.23)
3337 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3338 displacement indices properly (regression at 1.0.12.23)
3340 changes in sbcl-1.0.17 relative to 1.0.16:
3341 * temporary regression: user code can no longer allocate closure
3342 variable storage on stack, due to bug 419 without explicitly
3343 requesting it. Please consult sbcl-devel for advice if you need to
3344 use this feature in the meanwhile.
3345 * new feature: runtime argument --control-stack-size can be used to
3346 adjust thread default control stack size.
3347 * enhancement: improved TIME output
3348 ** all times are reported using the measured accuracy (milliseconds
3349 for real and GC times, microseconds for everything else.)
3350 ** processor cycle counts on x86 and x86-64.
3351 ** interpreted forms are counted for both evaluator modes.
3352 ** number of lambdas converted by the compiler is reported.
3353 ** CPU percentage report (computed from real and total run time.)
3354 ** more comprehensive run time reporting, using a condenced format
3355 ** interperted form, lambda, and page fault counts are omitted
3357 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
3359 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
3360 * optimization: two argument forms of LAST are upto ~10% faster
3361 in normal SPEED policies.
3362 * optimization: NCONC no longer needs to heap cons its &REST list
3363 in normal SPEED policies.
3364 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
3365 to Sidney Markowitz)
3366 * bug fix: UNION and NUNION work with :TEST-NOT once more,
3367 regression since 1.0.9.1. (thanks to Eric Marsden)
3368 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
3369 since 1.0.15.36. (thanks to Paul Khuong)
3370 * bug fix: LAST when always returned the whole list when given a bignum
3371 as the second argument.
3372 * bug fix: dynamic extent allocation of nested lists and vectors
3373 could leak to otherwise accessible parts.
3374 * bug fix: invalid optimization of heap-allocated alien variable
3376 * bug fix: fasl header checking is less vulnerable to different
3377 platform word lengths.
3378 * bug fix: more correct assembler syntax for GNU binutils
3379 2.18.50.0.4 support. (thanks to Marijn Schouten)
3380 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
3382 * bug fix: the fopcompiler can handle LOCALLY forms (with no
3383 declarations) successfully. (reported by Attila Lendvai)
3385 changes in sbcl-1.0.16 relative to 1.0.15:
3386 * minor incompatible change: revert the changes to sb-posix's error
3387 signaling added in 1.0.14.
3388 * minor incompatible change: change PROBE-FILE back to returning
3389 NIL whenever we can't get a truename, as was the case before 1.0.14.
3390 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
3391 inherits from ERROR instead of just CONDITION.
3392 * new feature: SB-INTROSPECT can provide source locations for instances
3393 as well. (thanks to Tobias Rittweiler)
3394 * optimization: binding special variables now generates smaller code
3395 on threaded platforms.
3396 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
3397 and cases where no :TEST is given but the compiler can infer that
3398 the element to search is of type (OR FIXNUM (NOT NUMBER)).
3399 * optimization: better LOGNOT on fixnums.
3400 * optimization: modular arithmetic for a particular requested width
3401 is implemented using a tagged representation unless a better
3402 representation is available.
3403 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
3404 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
3405 for wellformedness and returns a specialized vector. (reported by
3406 Francois-Rene Rideau)
3407 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
3408 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
3409 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
3410 unscheduling timer at the same time as another timer fires.
3411 * bug fix: don't reschedule timers for dead threads.
3412 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
3413 * bug fix: copying output from RUN-PROGRAM to a stream signalled
3414 bogus errors if select() was interrupted.
3415 * enhancement: add support for fcntl's struct flock to SB-POSIX.
3417 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
3418 * enhancement: cleaner backtraces for interactive interrupts, as
3419 well as other cases where the interesting frames used to be
3420 obscured by interrupt handling frames.
3421 * enhancement: untracing a whole package using (UNTRACE "FOO") is
3422 now supported, and tracing a whole package using (TRACE "FOO") now
3423 traces SETF-functions as well.
3424 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
3425 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
3426 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
3427 * unreadably printed representation of hash-tables now includes
3429 * bug fix: partially fixed #188: type propagation from assignments
3430 is now more efficient.
3431 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
3432 'DOUBLE-FLOAT) are not flushable.
3433 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
3434 full address of the object, and none of the tag bits.
3435 * bug fix: readably printing hash-tables now respects other printer
3436 control variables. (reported by Cedric St-Jean)
3437 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
3438 keyword with MAKE-HASH-TABLE.
3439 * bug fix: export SB-POSIX:MKSTEMP.
3440 * bug fix: SORT was not interrupt safe.
3441 * bug fix: XREF accounts for the last node of each basic-block as
3443 * bug fix: MAKE-INSTANCE optimizations interacted badly with
3444 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
3445 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
3446 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
3447 create obsolete instances in the case of redefinition or
3448 obsoletion of a superclass. (thanks to Andy Hefner)
3449 * bug fix: Support for the Alpha architecture has been revived; it had
3450 suffered somewhat from lack of maintenance since sbcl-1.0.
3451 * improvements to the Windows port:
3452 ** The system detects the codepage to use at startup, instead of
3453 using the value from the saved core. (thanks to Kei Suzuki)
3455 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
3456 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
3457 (see documentation for details.)
3458 * revived support for OpenBSD (contributed by Josh Elsasser)
3459 * partially fixed bug #108: ROOM no longer suffers from occasional
3460 (AVER (SAP= CURRENT END)) failures.
3461 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
3462 bodies no longer cause a WARNING to be signalled. (reported by
3464 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
3465 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
3466 the bug in TRUNCATE.) (reported by Michael Weber)
3467 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
3468 no samples. (reported by Andy Hefner)
3469 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
3470 no longer appear as (NIL ...) frames in backtraces.
3471 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
3472 is now actually exported from SB-EXT as documented. (reported by
3474 * bug fix: sb-aclrepl now correctly understands how to inspect
3475 single-floats on 64-bit platforms where single-floats are not boxed.
3476 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
3477 yet been finalized. (reported by Levente Meszaros)
3478 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
3479 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
3480 SBCL-specific optimize qualities.
3482 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
3483 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
3484 an executable in the search path, and does so in the child
3485 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
3486 been removed; it can be found in the CVS history, for somebody who
3487 needs that search behavior (see the manual).
3488 * minor incompatible change: compiler policy re. weakening type
3489 checks has changed: now type checks are weakened only if SAFETY < 2
3491 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
3492 unparsing of directory pathnames as files. Analogously,
3493 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
3494 filename to parse into a directory pathname.
3495 * enhancement: implicit generic function creation now signals a
3496 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
3497 users can bind handlers for and muffle around calls to LOAD.
3498 * enhancement: RUN-PROGRAM allows unicode arguments and environments
3499 to be used (using the default stream external format), and allows
3500 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
3501 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
3502 strings and vectors whose element-type or simplicity is not fully
3503 known at compile-time.
3504 * optimization: STRING-TRIM and related functions no longer allocate
3505 a new string when no trimming needs to be performed. These functions
3506 are also faster than before when the input string has been declared
3508 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
3509 * optimization: READ-LINE is significantly faster for files containing
3511 * optimization: non-open coded uses of character comparison operators
3512 (e.g. char=) no longer cons when called with more than one parameter
3513 on platforms supporting dynamic-extent allocation.
3514 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
3515 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
3516 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
3518 * bug fix: some sequence functions elided bounds checking when
3520 * bug fix: too liberal weakening of union-type checks when SPEED >
3522 * bug fix: more bogus fixnum declarations in ROOM implementation
3525 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
3526 * new feature: MAKE-HASH-TABLE now experimentally accepts a
3527 :SYNCHRONIZED argument, which makes the hash-table safe for
3528 concurrent accesses (but not iteration.) See also:
3529 SB-EXT:WITH-LOCKED-HASH-TABLE, and
3530 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
3531 * optimization: CONCATENATE on strings is an order of magnitude faster
3532 in code compiled with (> SPEED SPACE).
3533 * optimization: SUBSEQ is ~50% faster on lists.
3534 * bug fix: bug 417 fixed -- source location reporting is now more robust.
3535 * bug fix: SUBSEQ on a list will now correctly signal an error if if
3536 END is smaller then START.
3537 * bug fix: SB-PROFILE will no longer report extra consing for nested
3538 calls to profiled functions.
3539 * bug fix: ROOM implementation had bogus fixnum declarations which
3540 could cause type-errors when calling ROOM on large images.
3541 * bug fix: if file compilation is aborted, the partial fasl is now
3542 deleted, and COMPILE-FILE returns NIL as the primary value.
3543 * bug fix: number of thread safety issues relating to SBCL's internal
3544 hash-table usage have been fixed.
3545 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
3546 be returned from its body when the values were being returned
3547 using unknown-values return convection and the W-P-O was wrapped
3548 inside an UNWIND-PROTECT.
3549 * bug fix: sb-posix should now compile again under Windows, enabling
3550 slime to work again.
3552 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
3553 * incompatible change: hash-table accessor functions are no longer
3554 automatically protected by locks. Concurrent accesses on the same hash-table
3555 from multiple threads can give inconsistent results or even corrupt the
3556 hash-table completely. Multi-threaded applications should do their own
3557 locking at the correct granularity. In the current implementation it is
3558 still safe to have multiple readers access the same table, but it's not
3559 guaranteed that this property will be maintained in future releases.
3560 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
3561 and will signal an error at runtime.
3562 * enhancement: SB-THREAD package now exports a semaphore interface.
3563 * enhancement: CONS can now stack-allocate on x86 and
3564 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
3566 * enhancement: nested lists can now be stack allocated on
3567 platforms providing stack allocation support.
3568 * enhancement: dynamic-extent support has been extended to support
3569 cases where there are multiple possible sources for the stack
3571 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
3572 if the mutex is uncontested on Linux.
3573 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
3574 as specified by the CLHS. (thanks to Tobias Rittweiler)
3575 * bug fix: NaN comparison now works on x86-64.
3576 * bug fix: CLOSE :ABORT T on a stream with pending output now
3578 * bug fix: instances of non-standard metaclasses using standard
3579 instance structure protocol sometimes missed the slot type checks
3581 * bug fix: known functions can be inlined in high-debug code.
3583 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
3584 * minor incompatible change: the MSI installer on Windows no longer
3585 associates .lisp and .fasl files with the installed SBCL.
3586 * minor incompatible change: :UNIX is no longer present in *FEATURES*
3587 on Windows. (thanks to Luis Oliviera)
3588 * new feature: SB-CLTL2 contrib module now implements
3589 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
3590 * optimization: scavenging weak pointers is now more efficient,
3591 requiring O(1) instead of O(N) per weak pointer to identify
3592 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
3593 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
3594 method bodies using constant slot-names when the first argument is
3595 a specializer parameter for the method.
3596 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
3597 names, when the class of the instance is a direct instance
3598 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
3599 as slow as the constant slot-name case.)
3600 * optimization: member type construction is now O(N) instead
3602 * optimization: UNION and NUNION are now O(N+M) for large
3603 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
3605 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
3606 now more readable in environments like Slime which display it.
3607 (thanks to Tobias C. Rittweiler)
3608 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
3609 was able to infer the correct argument type for the object on which
3610 the CAS operation was being performed.
3611 * bug fix: copy propagation interfered with parallel assignment
3612 semantics in local calls. (reported by Paul Khuong)
3613 * bug fix: the signed modular fixnum shift compiled to wrong code on
3614 x86 and x86-64. (spotted by a slight modification to some of
3617 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
3618 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
3619 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
3620 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
3622 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
3623 and generic function now print the object identity for anonymous
3624 instances. (thanks to Attila Lendvai)
3625 * enhancement: as an extension to MOP, SBCL now supports SETF of
3626 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
3627 (thanks to Attila Lendvai)
3628 * enhancement: sb-cover has an alternate annotation mode which puts
3629 the form annotations at the car of the form, instead of annotating
3630 it completely. The benefit of this mode is that it shows better
3631 which forms were instrumented by the compiler.
3632 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
3633 by printer control variables. (reported by Dan Corkill)
3634 * bug fix: system leaked memory when delayed output was performed by
3635 the OS in smaller chunks then expected. (thanks to David Smith)
3636 * bug fix: system leaked memory when file streams were not closed
3638 * bug fix: large objects written to slow streams that were modified
3639 after the write could end up with the modified state written to
3640 the underlying file descriptor.
3641 * bug fix: multiple threads operating in parallel on the same stream
3642 could cause buffer-overflows.
3643 * bug fix: source location information is stored correctly
3644 (broken since 1.0.6). This bug would generally show up as the
3645 Slime debugger highlighting the wrong form when the sldb-show-source
3647 * bug fix: Branch forms are again annotated as branches in the sb-cover
3649 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
3650 on x86-64. (reported by Gregory Vanuxem)
3651 * bug fix: EQUALP could return wrong results for structures with raw
3652 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
3653 word). (reported by Vjacheslav Fyodorov)
3654 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
3657 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
3658 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
3659 atomic compare-and-swap operations on threaded platforms.
3660 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
3661 allows assigning a global minimum value to optimization qualities
3662 (overriding proclamations and declarations).
3663 * enhancement: closed over variables can be stack-allocated on x86
3665 * performance bug fix: GETHASH and (SETF GETHASH) are once again
3667 * optimization: slot definition lookup is now O(1). This speeds up
3668 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
3669 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
3670 * optimization: ASSOC and MEMBER can now be open-coded for all
3671 combinations of keyword arguments when second argument is constant
3672 and SPEED >= SPACE. In other cases a specialized version is
3674 * bug fix: using obsoleted structure instances with TYPEP and
3675 generic functions now signals a sensible error.
3676 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
3677 (reported by Kristoffer Kvello)
3678 * bug fix: backtrace construction is now more careful when making
3679 lisp-objects from pointers on the stack, to avoid creating bogus
3680 objects that can be seen by the GC.
3681 * bug fix: defaulting of values in contexts expecting more than 7
3682 variables now works on x86-64. (reported by Christopher Laux)
3683 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
3685 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
3686 as the property-list of a symbol.
3687 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
3688 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
3689 situations requested, are once again file-compileable. (reported
3692 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
3693 * MOP improvement: support for user-defined subclasses of
3694 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
3695 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
3696 the expansion of DEFMETHOD, is responsible for generating a form
3697 which creates a list of specializers when evaluated. Additional
3698 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
3699 debugging and introspective support.
3700 * minor incompatible change: the (unsupported) spinlock interface
3701 has changed: free spinlock now has the value NIL, and a held spinlock
3702 has the owning thread as its value.
3703 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
3704 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
3706 * enhancement: name of a socket-stream is now "a socket" instead of
3707 "a constant string".
3708 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
3709 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
3710 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
3711 for generic functions. (Thanks to Tobias C. Rittweiler)
3712 * optimization: bignum printing speed has been improved by 20-40%
3713 (depending on the bignum size.)
3714 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
3716 * bug fix: the cache used by the CLOS to store precomputed effective
3717 methods, slot offsets, and constant return values is now thread and
3719 * bug fix: generic function dispatch function updating is now thread
3720 and interrupt safe (in the sense that the known issues have been
3722 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
3723 * bug fix: interning EQL-specializers is now thread and interrupt safe.
3724 * bug fix: asdf systems with dependencies to the SB-POSIX or
3725 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
3726 * bug fix: interrupt safety of applicable method computation has been
3729 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
3730 * new contrib: sb-cover, an experimental code coverage tool, is included
3731 as a contrib module.
3732 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
3733 significantly faster.
3734 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3735 produce more efficient code on x86-64 if the compiler can determine
3736 that (+ INDEX <constant>) does not require a bounds check and FOO
3737 has an element type at least 8 bits wide.
3738 * enhancement: a new, experimental synchronous timeout facility is
3739 provided. Refer to SB-SYS:WITH-DEADLINE for details.
3740 * enhancement: when a symbol name conflict error arises, the
3741 conflicting symbols are always printed with a package prefix.
3742 (thanks to Kevin Reid)
3743 * enhancement: stepping is now once again supported on the SPARC and
3744 MIPS platforms. (It is also now more likely to work on CheneyGC
3746 * enhancement: sb-sprof can now also track and report accurate call
3748 * bug fixes: the treatment of non-standard subclasses of
3749 SB-MOP:SPECIALIZER is more correct.
3750 * incompatible change: PURIFY no longer copies the data from the
3751 dynamic space into the static and read-only spaces on platforms
3752 that use the generational garbage collector
3753 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
3755 * bug fix: GC race condition occasionally resulting in crashes with
3756 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
3758 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3760 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3761 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3762 * bug fix: an asynchronous interrupt could previously leave the
3763 system running with GC inhibited.
3764 * bug fix: a DECLARE form evaluated at top-level now causes an error
3765 rather than silently (or verbosely) returning NIL.
3766 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3767 result in a error being signalled due to source form lookup errors.
3768 (reported by Peter Graves)
3770 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3771 * incompatible change: removed writer methods for host-ent-name,
3772 host-ent-addresses -- changing the values did not update the DNS
3774 * minor incompatible change: changed experimental JOIN-THREAD interface
3775 * documentation: the manual now lists reader and writer methods
3776 in class slot documentation sections. (thanks to Richard M Kreuter)
3777 * documentation: unwinding from asyncronous events has been
3778 documented as unsafe.
3779 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3780 in multithreaded application code.
3781 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3782 platforms. (thanks to James Anderson for the optimization hint)
3783 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3785 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3786 variants no longer cons.
3787 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3788 their NOT- variants no longer cons.
3789 * optimization: EQUAL hash tables no longer use SXHASH for objects
3790 of all data types, but instead use an EQL hash for types for which
3791 EQUAL is the same as EQL.
3792 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3793 are significantly faster.
3794 * optimization: new STRING-OUTPUT-STREAM implementation is much
3795 faster for large outputs and conses 30% less on average.
3796 * enhancement: XREF information is now collected for references made
3797 to global variables using SYMBOL-VALUE and a constant argument.
3798 * enhancement: SIGINT now causes a specific condition
3799 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3800 * bug fix: FILE-POSITION used to signal an error in some cases where
3801 ANSI requires it to return NIL.
3802 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3803 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3804 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3806 * bug fix: bad type declaration in the CLOS implementation has
3807 been fixed. (reported by James Anderson)
3808 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3809 (thanks to Lutz Euler)
3810 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3811 required by the CLHS. (reported by Samium Gromoff)
3812 * bug fix: dead unbound variable references now signal an error.
3813 (reported by Marco Monteiro)
3814 * bug fix: / with an unused value was being deleted in safe code.
3815 (thanks to Marco Monteiro and Kevin Reid)
3816 * bug fix: number of characters that can be written onto a single
3817 line in a file is unlimited.
3818 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3819 been fixed by inhibiting interrupts for when GC is disabled.
3820 * bug fix: some interrupt safety issues with GETHASH, (SETF
3821 GETHASH), CLRHASH and REMHASH have been fixed.
3822 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3823 specifier no longer causes infinite recursion.
3824 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3825 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3826 * bug fix: an &environment argument with the correct variable information
3827 is passed to macros that are expanded during byte compilation.
3828 (reported by Samium Gromoff)
3829 * bug fix: a logic error was causing the hash function for bignums to
3830 have excessive amounts of collisions. (reported by Faré Rideau)
3831 * bug fix: modifying the contents of an array could change the return
3832 value of SXHASH on that array, which is only allowed for strings
3833 and bit vectors. (bug introduced in 0.9.16)
3834 * improvement: the x86-64/darwin port now passes all tests (except
3835 for the debugger tests) but should still be considered
3836 experimental until this is fixed.
3837 * improvement: a style-warning is signaled for CASE (etc) clauses with
3838 duplicate keys. (thanks to Kevin Reid)
3839 * improvement: macos/x86 and macos/x86-64 now use mach exception
3840 handlers for dealing with illegal instructions (for trapping and
3841 error handling) and memory protection violations (for GC).
3843 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3844 * new platform: experimental support for x86-64/darwin (MacOS).
3845 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3846 and getnameinfo sockets functions are used instead of gethostbyaddr
3847 and gethostbyname, on platforms where the newer functions are available.
3848 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3850 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3851 don't print the startup banner, but behave as if --noinform was passed
3852 as a command line argument. (thanks to Kevin Reid)
3853 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3854 * optimization: code using alien values with undeclared types is much faster.
3855 * optimization: the compiler is now able to open code SEARCH in more cases.
3856 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3857 * bug fix: using standardized COMMON-LISP special variables as loop
3858 variables no longer signals bogus package lock violations. (reported
3860 * bug fix: declaring local loop variables to be of a range-limited type
3861 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3862 (reported by Andras Simon)
3863 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3864 bugs remain on x86-64.)
3865 * bug fix: the #= and ## reader macros now interact reasonably with
3866 funcallable instances.
3867 * bug fix: type-checks for function arguments were compiled using the
3868 compiler policy settings of the wrong lexical environment (in 1.0.2
3870 * bug fix: SHADOW accepts characters as string designators, as required
3871 by the spec (thanks to Eric Marsden)
3872 * bug fix: fixed GC safety issues when foreign functions are called with
3873 non-base strings as arguments
3874 * bug fix: more consistent error output for fatal-compiler-warnings, like
3876 * bug fix: functions with proper names were showing up as NIL in
3877 backtraces (reported by Edi Weitz, regression in 1.0.2)
3879 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3880 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3881 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3882 produce more efficient code on the x86 if the compiler can determine
3883 that (+ INDEX <constant>) does not require a bounds check and FOO
3884 has an element type at least 8 bits wide.
3885 * bug fix: references to undefined variables are handled the same way
3886 in toplevel forms as in the normal compiler
3887 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3889 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3890 (thanks to Jon Buller)
3891 * improvement: faster compilation times for complex functions
3892 * improvement: added readlink support to SB-POSIX (thanks to Richard
3895 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3896 * improvement: experimental support for mach exception handling on
3897 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3899 * improvement: support for GBK external format.
3900 (thanks to Chun Tian (binghe))
3901 * improvement: the debugger now displays variables that have been closed
3902 over, in code compiled with (DEBUG 2) or higher
3903 * improvement: support for executable cores on NetBSD (thanks to
3905 * new feature: added a RESTART-FRAME debugger command
3906 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3907 be used to provide an implementation for FILE-POSITION on Gray streams
3908 (thanks to Eric Marsden)
3909 * new feature: add syslog, openlog and closelog support to SB-POSIX
3910 (thanks to Richard Kreuter)
3911 * optimization: the function call overhead in code compiled with
3912 a high DEBUG optimization setting is significantly
3913 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3914 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3915 (thanks to Tony Martinez)
3916 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3917 evaluated once (reported by Kevin Reid)
3918 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3919 works again (thanks to Kilian Sprotte)
3920 * bug fix: an error is signaled for tagbodies with duplicate tags
3921 (thanks to Stephen Wilson)
3922 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3923 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3924 stack frames from alien callbacks.
3925 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3926 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3927 65k pages (thanks to David Woodhouse)
3928 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3930 changes in sbcl-1.0.1 relative to sbcl-1.0:
3931 * new platform: FreeBSD/x86-64, including support for threading.
3932 * new feature: the compiler stores cross-referencing information
3933 about function calls (who-calls), macroexpansion (who-macroexpands)
3934 and special variables (who-binds, who-sets, who-references) for code
3935 compiled with (< SPACE 3). This information is available through the
3936 sb-introspect contrib.
3937 * new feature: users may subclass SEQUENCE, and have instances of
3938 these classes interoperate with standard Common Lisp functions if
3939 a number of methods are defined. (This feature is experimental
3940 and the interface subject to change based on feedback from SBCL
3941 users and the general community)
3942 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3943 x86/x86-64, rather than the previous fixed depth of 8
3944 * improvement: another pthread back-end of mutex "pthread-futex".
3945 * bug fix: non-ascii command-line arguments are processed correctly
3946 (thanks to Yaroslav Kavenchuk)
3947 * bug fix: non-required arguments were not passed correctly when a method
3948 defined using DEFMETHOD was called from a mop-generated method using
3949 CALL-NEXT-METHOD (reported by Pascal Costanza)
3950 * bug fix: recursion is now permitted in accessors through
3951 SLOT-UNBOUND. (reported by Pascal Costanza)
3952 * bug fix: an error was signaled at startup if the HOME environment
3953 variable was defined, but had an empty value (reported by Peter Van Eynde)
3954 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3955 signal a PROGRAM-ERROR, not a BUG.
3956 * bug fix: SB-POSIX:READDIR works when built with large file support.
3957 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3959 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3960 for better automatic indentation support. (thanks to Matt Pillsbury)
3961 * optimization: loading generic functions no longer takes O(n^2) time,
3962 proportional to the amount of methods in the generic function
3963 (reported by Todd Sabin and Jeremy Brown)
3964 * optimization: the FIND and POSITION family of sequence functions
3965 are significantly faster on arrays whose element types have been
3967 * improvements to the Windows port:
3968 ** Intermittent heap corruption problems have been fixed. (thanks
3969 to Alastair Bridgewater)
3970 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3972 ** Lisp is able to unwind foreign exception frames from alien
3973 callbacks. (thanks to Alastair Bridgewater)
3975 changes in sbcl-1.0 relative to sbcl-0.9.18:
3976 * improvement: experimental support for threading on FreeBSD/x86.
3977 (thanks to NIIMI Satoshi)
3978 * improvement: runtime option --dynamic-space-size can be used
3979 to set the size of the dynamic space reserved on startup.
3980 * improvement: floating point modes in effect are now saved in
3981 core, and restored on startup.
3982 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3983 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3984 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3985 threads are not running after *SAVE-HOOKS* have run.
3986 * improvement: writes to CLOS instance slots are type-checked in code
3987 compiled with (SAFETY 3)
3988 * improvement: floating-point exception handling on FreeBSD (thanks to
3990 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3991 (thanks to Zach Beane)
3992 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3994 * improvement: added support for the Shift-JIS external format.
3995 (contributed by NIIMI Satoshi)
3996 * improvement: callbacks are supported on Linux/PPC. (thanks to
3998 * bug fix: compiler bug triggered by a (non-standard) VALUES
3999 declaration in a LET* was fixed. (reported by Kaersten Poeck)
4000 * bug fix: file compiler no longer confuses validated and already
4001 dumped structurres. (reported by Kaersten Poeck)
4002 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
4003 fill-pointer signals a type-error as required. (thanks to
4005 * bug fix: disassemly of funcallable instances works.
4006 * bug fix: single stepping on PPC.
4007 * bug fix: fix thread-safety problems in the type system (generally
4008 manifesting as nonsensical errors like "STRING is a bad type specifier
4009 for sequences" or "The value 1 is not of type FIXNUM")
4010 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
4011 (reported by Josip Gracin)
4012 * bug fix: an error is signaled for attempts to displace arrays with
4013 incompatible element types (thanks to Mario Mommer)
4014 * bug fix: more correct handling of wide characters in debug info
4015 (bug reported by Attila Lendvai and fixed by Juho Snellman)
4016 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
4017 and don't cause extra consing
4018 * optimization: MAP and MAP-INTO are significantly faster on vectors
4019 whose elements types have been declared.
4020 * Improvements to SB-SPROF:
4021 ** Support for allocation profiling
4022 ** Reduced profiling overhead, especially for long profiling runs
4023 * Improvements to the Windows port:
4024 ** floating point exceptions are now reported correctly.
4025 ** stack exhaustion detection works partially.
4026 ** more accurate GET-INTERNAL-REAL-TIME.
4027 ** better RUN-PROGRAM behaviour in case of errors in the child
4029 ** PROBE-FILE now simplifies pathnames correctly.
4030 ** DIRECTORY now works correctly with :WILD-INFERIORS.
4031 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
4032 1st 1970 (although time timezone data will be unreliable).
4033 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
4035 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
4036 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
4037 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
4039 * bug fix: two potential GC deadlocks affecting threaded builds.
4040 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
4041 returns T (reported by Anton Kazennikov)
4042 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
4043 with non-variable places
4044 * bug fix: remove a race condition in the setting of
4045 funcallable-instance functions, this should make threaded CLOS
4046 code more stable against memory faults.
4047 * bug fix: corruption of specials when unbinding is interrupted by an
4048 asynchronous unwind (reported by Hannu Koivisto)
4049 * improvement: the debugger will now also display local variables that
4050 are only used once, for code compiled with a DEBUG optimization quality
4053 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
4054 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
4055 * incompatible change: External-format support for FFI calls. The
4056 SB-ALIEN:C-STRING no longer implies an ASCII
4057 external-format. Instead the string is subject to external-format
4058 conversion. Additionally return values of type SB-ALIEN:C-STRING
4059 are by default of type (SIMPLE-ARRAY CHARACTER), not
4060 SIMPLE-BASE-STRING. For an alien type that behaves like the old
4061 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
4062 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
4063 * incompatible change: SB-EXT package no longer contains the
4064 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
4065 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
4067 * incompatible change: the single-stepper is no longer available
4068 on Alpha, Mips and Sparc platforms.
4069 * minor incompatible change: the direct superclasses of
4070 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
4071 not (STANDARD-OBJECT FUNCTION). This makes the
4072 class-precedence-lists of GENERIC-FUNCTION and
4073 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
4075 * minor incompatible change: the default stream external format on
4076 non-unicode SBCL is no longer detected from the locale, but is always
4078 * new feature: Add a version of evaluator that uses an interpreter instead
4079 of the compiler. EVAL still uses the compiler by default, to switch it
4080 to use the interpreter, set the value of the variable
4081 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
4082 * minor incompatible change: the single-stepper REPL has been merged
4083 with the normal debugger (see the "Stepping" heading of the debugger help
4084 for more details). The debugger command STEP will no longer switch
4085 to the single-stepper REPL.
4086 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
4087 for a type now works.
4088 * bug fix: loading of default sysinit file works. (thanks to Leonid
4090 * bug fix: better detection of circularities in the file-compiler.
4091 (reported by Marco Monteiro)
4092 * bug fix: the CL pathname functions now work with files that have
4093 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
4094 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
4095 systems with Unix98 pty semantics.
4096 * bug fix: ASDF-INSTALL will now work with bsd tar.
4097 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
4099 * bug fix: timers expiring in dead threads no longer cause a
4100 type-error (reported by Paul "Nonny Mouse").
4101 * bug fix: thanks to more lightweight single-stepper instrumentation,
4102 code compiled with (DEBUG 3) will compile and execute significantly faster,
4103 and will have more accurate type-inferencing than before
4104 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
4105 whose bindings are modified
4106 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
4107 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
4108 ** replace dummy implementations of CL:MACHINE-INSTANCE and
4109 CL:SOFTWARE-VERSION with proper version
4111 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
4112 * feature: implemented the READER-METHOD-CLASS and
4113 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
4114 as specified by AMOP.
4115 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
4117 * optimization: faster LOGCOUNT implementation on x86 and x86-64
4118 (thanks to Lutz Euler)
4119 * optimization: hashing of general arrays and vectors has been
4120 improved. (reported by Any Fingerhut)
4121 * enhancement: SB-INTROSPECT is now able to find definitions of
4122 profiled functions. (thanks to Troels Henriksen)
4123 * enhancement: compiler-macro expansion applies now to FUNCALL forms
4124 as well, allowing compiler-macros for SETF-functions to expand.
4125 * enhancement: step-instrumentation no longer wraps known
4126 single-value functions with multiple-value context, allowing
4127 better type inference.
4128 * fixed bug #337: use of MAKE-METHOD in method combination now works
4129 even in the presence of user-defined method classes. (reported by
4130 Bruno Haible and Pascal Costanza)
4131 * fixed bug #339(c): if there are applicable methods not part of any
4132 long-form method-combination group, call INVALID-METHOD-ERROR.
4133 (reported by Bruno Haible)
4134 * fixed bug #361: the :FUNCTION initarg in the protocol for
4135 initialization of methods can now be used to override
4136 internally-produced optimized functions. (reported by Bruno
4138 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
4139 system-provided lambda expression no longer cause warnings about
4140 unbound #:|pv-table| symbols.
4141 * bug fix: improved the handling of type declarations and the
4142 detection of violations for keyword arguments with non-constant
4144 * bug fix: potentially erronous calls to PATHNAME and
4145 MERGE-PATHNAMES were being flushed in some cases.
4146 (reported by Richard Kreuter)
4147 * bug fix: compiled calls to TYPEP were mishandling obsolete
4148 instances. (reported by James Bielman and Attila Lendvai)
4149 * bug fix: format strings with ~> without matching ~< no longer
4150 trigger an AVER, but signal an understandable error instead.
4151 (reported by Antonio Martinez)
4152 * bug fix: specifying an output-file without a pathname-type for
4153 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
4154 of input-file instead of "fasl". (reported by Robert Dodier)
4155 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
4156 (reported by James Y Knight).
4157 * bug fix: compiler-macros-function did not consider the environment
4158 argument for shadowing by local functions.
4159 * bug fix: compiler-macros expansion was inhibited by local INLINE
4161 * bug fix: inline expansions of known functions were subject to
4162 step-instrumentation in high debug policies, leading to problems
4163 with type-inference.
4164 * bug fix: compiler failed to differentiate between different CONS
4165 types in some cases.
4166 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
4167 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
4168 * bug fix: #368: incorrect use of expressed vs. upgraded array
4170 * bug fix: #306a: more precise unions of array types.
4171 * thread-safety improvements:
4172 ** CONDITION-WAIT could return early on Linux, if the thread was
4173 interrupted and subsequently continued with SIGCONT.
4174 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
4176 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
4177 * added support for the ucs-2 external format. (contributed by Ivan
4179 * minor incompatible change: pretty printing of objects of type
4180 (cons symbol) is, in the default pprint-dispatch-table, now
4181 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
4183 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
4184 called later in a class's lifetime, possibly as late as when the
4185 first instance of the class is created. Previously,
4186 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
4187 class became finalizeable.
4188 * fixed bug: FILE-POSITION sometimes returned inconsistent results
4189 for multibyte external-format streams. (thanks to "vbzoli")
4190 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
4191 with :ALLOCATION :CLASS inherited from superclasses of the
4193 * fixed bug: anonymous classes can now be created using the :NAME
4194 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
4195 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
4196 * fixed bug: core-files saved with :EXECUTABLE T can again be
4197 executed when SBCL_HOME isn't set. (reported by James Knight)
4198 * fixed bug: toplevel LOCALLY forms with declarations could
4199 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
4200 * fixed bug: printing from several different threads using different
4201 values of *print-case* could cause invalid output, due to
4202 some internal special variables of the printer not being bound
4203 thread-locally (reported by Max Mikhanosha)
4204 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
4205 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
4206 (reported by Pascal Costanza)
4207 * fixed bug: FINALIZE-INHERITANCE is called from
4208 REINITIALIZE-INSTANCE on classes when the class has previously
4209 been finalized, as required by AMOP.
4210 * minor code generation optimizations:
4211 ** better register allocation in CLOS dispatching functions
4212 ** overflow detection when coercing signed bytes to fixnums on x86-64
4213 ** is now implemented with one IMUL instruction instead of three shifts
4214 ** more efficient bit-vector access on x86 and x86-64
4215 ** more efficient access to raw structure slots on x86 and x86-64
4216 * fixed some bugs revealed by Paul Dietz' test suite:
4217 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
4218 return its argument.
4220 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
4221 * feature: thread support on Solaris/x86, and experimental thread support
4223 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
4225 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
4226 default method for SLOT-UNBOUND.
4227 * minor incompatible change: prevent the user from specializing the
4228 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
4229 somewhat counter to the intent of the protocol, I (CSR) think, and
4230 additionally it just doesn't work in SBCL as currently
4231 implemented, thanks to optimizations (that are always valid for
4232 the other three SLOT-VALUEish functions, but not for the setter).
4233 * minor incompatible change: the :SB-LDB feature is now enabled by
4234 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
4235 the low-level debugger.
4236 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
4237 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
4238 down to an SB-SYS:FD-STREAM, allowing direct communication in
4239 more cases. Temporary files and pipes are still used as a fallback
4241 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
4242 on the non-reentrant C functions localtime(3) and gmtime(3).
4243 * bug fix: global optimization policy was not visible in LOCALLY and
4245 * bug fix: class objects can be used as specializers in methods.
4246 (reported by Pascal Costanza)
4247 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
4248 with a type error. (reported by blitz_ on #lisp)
4249 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
4250 failed with a type error. (reported by Pascal Bourguignon)
4251 * bug fix: merging pathnames against defaults with :DIRECTORY
4252 starting with '(:RELATIVE :BACK) should preserve the :BACK.
4253 (reported by James Y Knight)
4254 * bug fix: saving large (>2GB) cores on x86-64 now works
4255 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
4256 constant index and a (simple-array (signed-byte 32)) array
4257 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
4258 error (patch by Robert J. Macomber)
4259 * feature: TIME now displays the amount of run-time spent in GC
4260 * bug fix: The debugger now does a better job of respecting
4261 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
4262 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
4263 workaround for bug 403.)
4264 * bug fix: floating point exception handling now works on FreeBSD
4265 (thanks to NIIMI Satoshi)
4266 * fixed some bugs revealed by Paul Dietz' test suite:
4267 ** MISC.641: LET-conversion were not supposed to work in late
4269 * improvements to the Win32/x86 port:
4270 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
4271 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
4273 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
4274 * new feature: source path information is generated for macro-expansion
4275 errors for use in IDE's like Slime (thanks to Helmut Eller)
4276 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
4277 * bug fix: compiler does not loop forever on an invalid type in
4279 * improvement: compilation of most CLOS applications is significantly
4281 * optimization: added a limited bytecode compiler for simple toplevel
4282 forms, speeding up compilation and FASL loading
4283 * bug fix: the statistical profiler now properly distinguishes anonymous
4286 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
4287 * minor incompatible change: in sbcl-0.9.11 (but not earlier
4288 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
4289 into subclasses of the finalized class. Now user calls to
4290 FINALIZE-INHERITANCE finalize just the one class, and calls by the
4291 system return before any subclasses are finalized.
4292 * minor incompatible change: The reader no longer ignores errors
4293 regarding non-existent packages in #+ and #- feature tests.
4294 * new feature: command line options --no-sysinit, --no-userinit to
4295 inhibit loading the corresponding init files
4296 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
4297 for sending data through UDP sockets (thanks to François-René Rideau)
4298 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
4299 error is signalled instead (thanks to François-René Rideau)
4300 * minor incompatible change: Error signalling behaviour of lexical
4301 operations violating package locks has changed slightly. Refer to
4302 documentation on package locks for details.
4303 * enhancement: EVAL can process IF-expressions without resorting to the
4305 * bug fix: Some operations involving SIN, COS, or TAN weren't being
4306 constant-folded properly due to missing out-of-line functions.
4307 (reported by Mika Pihlajamäki)
4308 * bug fix: LISTEN sometimes returned T even in cases where no data was
4309 immediately available from the stream
4310 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
4311 were reversed. (reported by Levente Mészáros)
4312 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
4313 when given a vector displaced to an adjustable array. (reported
4315 * bug fix: derivation of float boundaries from numbers outside the
4316 appropriate float range (reported by John Wiseman)
4317 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
4319 * bug fix: precomputing cache entries for generic functions with
4320 some subclasses of specializers as yet invalid does not attempt to
4321 fill a cache line with a negative offset. (reported by Levente
4323 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
4324 allow condition class objects as arguments to DOCUMENTATION and
4325 (SETF DOCUMENTATION); only find and set documentation for
4326 structure names for the STRUCTURE doc-type. (suggested by Gary
4328 * improvements to the Win32/x86 port:
4329 ** (user-homedir-pathname) and default initialization file
4330 locations now know about the user's "Documents and Settings"
4331 directory (thanks to Yaroslav Kavenchuk)
4332 ** run-program is implemented (thanks to Mike Thomas)
4333 ** sockets support (thanks to Timothy Ritchey)
4334 ** better backtrace support (thanks to Alastair Bridgewater)
4335 ** sb-grovel supported
4336 ** asdf-install and sb-posix work somewhat
4337 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
4338 * improvements to the Solaris/x86 port:
4339 ** works on Solaris 11/Solaris Express
4340 ** floating-point exception handling support
4341 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
4342 * fixed some bugs revealed by Paul Dietz' test suite:
4343 ** REMOVE-METHOD returns its generic function argument even when
4344 the method is not one of the generic functions' methods.
4345 ** objects declared as MEMBER types can be admissible arguments to
4346 structure accessors.
4347 ** printing characters should simply be printed by the FORMAT ~:C
4349 ** compiler failure when compiling functions with hairy constant
4350 defaults for optional parameters.
4351 ** compiler produces wrong code when MAYBE-INLINE-expanding a
4352 function, which is already optimized.
4354 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
4355 * new platform: experimental support for SBCL x86/Darwin, including
4356 MacOS X 10.4.5 on Intel.
4357 * new feature: Unicode character names are now known to the system
4358 (through CHAR-NAME and NAME-CHAR).
4359 * new feature: the filesystem location of SBCL's core file is
4360 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
4361 * minor incompatible change: the contrib modules SB-POSIX and
4362 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
4363 this change is to make it easier to distribute
4364 location-independent binaries.
4365 * bug fix: as implied by AMOP, standardized classes no longer have
4366 slots named by external symbols of public packages. (reported by
4368 * optimization: calling functions via constant symbols -- as in
4369 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
4370 via the function object as in (FUNCALL #'FOO).
4371 * optimization: on x86 and x86-64, the calling convention for the
4372 case of dealing with an unknown number of values has been altered
4373 to be friendlier to the prediction heuristics implemented,
4374 particularly with reference to CALL and RET pairing. (thanks to
4375 Alastair Bridgewater)
4376 * optimization: on x86, the code for access to thread-local symbol
4377 values and binding/unbinding of thread-local symbols is smaller.
4378 (thanks to Alastair Bridgewater)
4379 * enhancement: CONSTANTP is now able to determine constantness of
4380 more complex forms, including calls to constant-foldable standardized
4381 functions and some special forms beyond QUOTE.
4382 * fixed bug: occasional GC crashes on Solaris/x86
4383 * optimization: x86-64 supports stack allocation of results of simple
4384 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
4385 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
4386 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
4387 (thanks to James Knight)
4388 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
4389 by the standard (thanks to Stephen Compall)
4391 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
4392 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
4393 be used for bundling the runtime and the core file into one
4394 executable binary. This feature is not currently supported on all SBCL
4395 platforms. (thanks to James Bielman and NIIMI Satoshi)
4396 * new feature: a generational or ephemeral garbage collector is now
4397 the default on the PowerPC platform (both Linux and Darwin). The
4398 old Cheney (stop and copy) collector is a build-time option.
4399 (thanks to Cyrus Harmon, after Raymond Toy)
4400 * minor incompatible change: the method by which SBCL finds its
4401 contributed modules has changed; it no longer relies on symbolic
4402 links from an $SBCL_HOME/systems directory, but searches directly
4403 in the subdirectories of $SBCL_HOME.
4404 * enhancement: the dynamic heap size on the Linux/PPC platform is
4405 markedly larger, even using the older Cheney garbage collector.
4406 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
4407 certain complicated string types. (reported by Gary King)
4408 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
4409 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
4410 * fixed bug: DOCUMENTATION on structures no longer signals an
4411 error if no structure type of the right name exists. (reported by
4413 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
4414 applicable non-standard primary or :AROUND method on
4415 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
4416 no longer cause unbound variable errors. (reported by Kevin Reid)
4417 * fixed bug: metacircle resolution in cases where methods have slots
4418 added before the slots from STANDARD-METHOD. (reported by Jean
4420 * fixed bug: the Power PC assembly code for calling into lisp
4421 sometimes computed its return address wrongly (depending on the
4422 15th bit of the address, fixed at link time). This used to
4423 manifest itself in a segmentation violation while building PCL.
4424 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
4425 many others over the years)
4426 * fixed bug: ROOM no longer reports silly numbers for stack usage if
4427 the stack pointer (treated as a signed integer) is negative.
4428 (thanks to Peter van Eynde)
4430 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
4431 * new platform: experimental support for the Windows operating
4432 system has been added. (thanks to Alastair Bridgewater)
4433 * fixed several bugs in and robustified the PPC FFI (including
4434 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
4435 * bug fix: allow non-simple string symbol names (reported by Paul
4437 * bug fix: interrupt handling on NetBSD (thanks to Richard M
4439 * bug fix: saving a core corrupted callbacks on x86/x86-64
4440 * bug fix: closed a loophole in metacircularity detection and
4441 grounding in the PCL implementation of CLOS.
4442 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
4443 (reported by tomppa on #lisp)
4444 * bug fix: clear the direction flag on Lisp -> C transitions, as
4445 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
4446 (reported by Andrej Grozin and Hendrik Maryns)
4447 * optimization: major improvements to GC efficiency on GENCGC platforms
4448 * optimization: faster implementation of EQUAL
4449 * optimization: emit more efficient opcodes for some common
4450 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
4451 * optimization: several other minor code-generation improvements on x86-64
4452 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
4454 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
4455 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4456 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
4457 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
4458 by ANSI as a generic function, and for consistency (SETF
4459 GENERIC-FUNCTION-NAME) is treated likewise.
4460 * fixed bug #233.b: make constraint propagation notice when a variable
4461 value is changed after it is referenced but before it is used
4462 * fixed bug #296: no more arbitrary behaviour from filenames with
4463 odd characters as --load arguments. (reported by Adam Warner)
4464 * fixed bug #390: :CHARACTER-SET pathname components now work as
4465 expected. (reported by Tim Daly Jr)
4466 * fixed bug #391: complicated :TYPE intersections in slot
4467 definitions no longer cause an error in PCL internals.
4468 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
4469 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
4470 returning the number of octets which would be written to the
4471 file-stream. (thanks to Robert J. Macomber)
4472 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
4473 arguments to the internal stream functions. (thanks to David
4475 * bug fix: stack exhaustion is now handled on the x86/SunOS
4476 platform. (thanks to Daisuke Homma)
4477 * bug fix: more accurate ROOM results on GENCGC platforms
4478 * optimization: improved type inference for arithmetic-for
4479 index variables in LOOP
4480 * optimization: faster floating-point SQRT on x86-64
4481 * fixed some bugs revealed by Paul Dietz' test suite:
4482 ** DOCUMENTATION returns NIL instead of "" for method combinations
4483 that don't have a docstring
4485 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
4486 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4487 GENERIC-FUNCTION-NAME) are no longer generic functions, and
4488 therefore are not customizeable by user code (as seems to be at
4489 least permitted and maybe required by AMOP). As a consolation,
4490 however, the SBCL implementation of these functions now calls
4491 REINITIALIZE-INSTANCE as specified by AMOP.
4492 * bug fix: slot-definition documentation is propagated as per ANSI
4493 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
4494 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
4495 argument, as do eslotd initialization methods. (from Pascal
4496 Costanza's "Closer" project)
4497 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
4498 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
4500 * bug fix: it is now possible to have more than one subclass of
4501 STANDARD-GENERIC-FUNCTION without causing stack overflow.
4502 (reported by Bruno Haible, Pascal Costanza and others)
4503 * bug fix: the dependent update protocol now works for generic
4504 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
4505 and Pascal Costanza)
4506 * bug fix: condition-class instances corresponding to
4507 DEFINE-CONDITION forms are now created eagerly. (reported by
4508 Kalle Olavi Niemitalo on comp.lang.lisp)
4509 * bug fix: floating point printing is more accurate in some
4510 circumstances. (thanks to Simon Alexander)
4511 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
4512 merged with *DEFAULT-PATHNAME-DEFAULTS*.
4513 * bug fix: callbacks on OS X now preserve stack-alignment.
4514 (thanks to Cyrus Harmon)
4515 * enhancement: the x86-64 disassembler is much better at
4516 disassembling SSE instructions. (thanks to Lutz Euler)
4517 * enhancement: CHECK-TYPE on a variable now allows type-inference
4518 (thanks to Vincent Arkesteijn)
4519 * optimization: improved performance of EUC-JP external format.
4520 (thanks to NIIMI Satoshi)
4521 * optimization: performance improvements to IO on file streams of
4522 :ELEMENT-TYPE CHARACTER
4523 * optimization: much faster memory allocation on x86-64
4524 * optimization: faster garbage collections (latency and throughput)
4526 * optimization: faster bignum subtraction and division on x86 and x86-64
4527 (thanks to Lutz Euler)
4528 * optimization: more accurate type-inference for loops that use a
4529 floating point index variable or a negative step.
4531 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
4532 * bug fix: add a workaround to SBCL looping infinitely at startup on
4533 Linux kernels with apparently buggy implementations of personality().
4534 (thanks to Svein Ove Aas)
4535 * bug fix: Unicode symbols are correctly printed in LDB backtraces
4536 (thanks to David Lichteblau)
4537 * bug fix: local bindings shadow global symbol macros for
4538 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
4539 * optimization: non-open coded uses of numeric comparison operators
4540 (e.g. >) no longer cons when called with more than one parameter
4541 on platforms supporting dynamic-extent allocation.
4542 * enhancement: saving cores with foreign code loaded is now supported
4543 on MIPS/Linux in addition to the previously supported platforms.
4544 * bug fix: FIND-RESTART now tests for activity, not applicability when given
4545 a restart object as identifier. (reported by Helmut Eller for CMUCL)
4546 * bug fix: division by zero in sb-sprof when no samples were collected
4547 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
4548 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
4549 (thanks to Alexander Kjeldaas)
4550 * new feature: ignoring the return values of destructive functions
4551 like NREVERSE signals a compile-time style-warning.
4552 (thanks to Kevin Reid)
4553 * new feature: the alignment of alien structure fields can be
4554 explicitly specified. (thanks to Cyrus Harmon)
4555 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
4556 and dump core on SIGQUIT
4558 ** incompatible change: threads do not inherit values of specials
4559 from their parents (see manual)
4560 ** bug fix: threads stacks belonging to dead threads are freed by the
4561 next exiting thread, no need to gc to collect thread stacks anymore
4562 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
4563 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
4564 ** bug fix: dynamic variable and thread start related gc lossage
4565 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
4567 * fixed some bugs revealed by Paul Dietz' test suite:
4568 ** SUBTYPEP is slightly more accurate on heinously complicated
4569 CONS types where some of the members have uncertain (in the
4570 NIL, NIL sense) type relationships to each other.
4572 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
4573 no longer purified unless :PURIFY T is explicitly specified.
4574 ** Non-purified cores are significantly smaller than before
4576 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
4577 * new feature: timers based on Zach Beane's excellent timer package
4578 * added support for the following external formats: koi8-u,
4579 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
4580 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
4581 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
4582 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
4583 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
4584 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
4585 * incompatible change: a threaded SBCL will no longer revert to
4586 non-threaded mode on non-NPTL systems, but refuse to start entirely.
4587 * bug fix: interrupts are disabled until startup is complete; no
4588 more sigsegvs when receiving a signal to soon
4589 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
4591 * bug fix: add a workaround for the memory randomization features in
4592 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
4593 workaround will only be in effect on systems with the proc filesystem
4595 * bug fix: printing objects of type HASH-TABLE signals a
4596 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
4598 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
4599 have been running for over 50 days. (reported by Gilbert Baumann)
4600 * bug fix: the logic for getting names of functions gets less
4601 confused when confronded with alternate-metaclass
4602 funcallable-instances. (reported by Cyrus Harmon)
4603 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
4604 consistent, even on internal alternate-metaclass objects.
4605 * bug fix: flush closure information collected by physical
4606 environment analysis prepass before the main pass. (bug reported
4608 * bug fix: compiler pack phase does not modify a hashtable, which is
4609 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
4610 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
4611 may be expanded. (reported by Alexander <malishev> on c.l.l)
4612 * bug fix: no more style-warnings when compiling code using LAST
4613 under high-SPEED low-SPACE settings. (reported by David Wallin
4615 * fixed some incompatibilities between SBCL's MOP and the MOP
4617 ** the METAOBJECT class is now implemented;
4618 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
4619 STANDARD-OBJECT, as required;
4620 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
4621 now compatible (as required by VALIDATE-SUPERCLASS); there
4622 remains a consistency requirement over the presence or absence
4623 of the FUNCTION class in the superclass list of finalized
4624 classes; see the manual for more details;
4625 ** the :AROUND method for COMPUTE-SLOTS on
4626 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
4627 requested slot ordering.
4629 ** bug fix: parent thread now can be gc'ed even with a live
4631 ** bug fix: binding a special with PROGV to no value is not
4632 the same as that symbol not having been bound (thanks to
4634 ** bug fix: binding specials is thread safe (thanks to
4636 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
4637 and SB-SPROF do not die with 'no handler for signal XX in
4638 interrupt_handle_now(..)' anymore
4639 ** bug fix: WITH-TIMEOUT works with multiple running threads
4640 * fixed some bugs revealed by Paul Dietz' test suite:
4641 ** ENSURE-GENERIC-FUNCTION should take a method class object for
4642 the :method-class keyword argument.
4644 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
4645 * new port: the Solaris operating system on x86 processors is now
4646 mostly supported, though some rough edges in the environment
4647 remain. (thanks to Daisuke Homma)
4648 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
4649 space for its heap. (thanks to Thiemo Seufer)
4650 * optimization: SBCL on MIPS platforms now supports dynamic-extent
4651 closures. (thanks to Thiemo Seufer)
4652 * minor incompatible change: eof selects abort in the debugger.
4653 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
4654 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
4656 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
4657 deprecated, and will go away in a future revision of SBCL.
4658 * minor incompatible change: GC-ON and GC-OFF are no longer
4659 implemented with a counter, it does not matter how many times gc
4660 is switched on or off
4661 * bug fix: discriminating functions for generic function classes
4662 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
4663 make invalid assumptions about method precedence order. (reported
4665 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
4666 platforms. (thanks to Thiemo Seufer)
4667 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
4668 * bug fix: correct pathname printing with printer escaping is on.
4669 (thanks to Kevin Reid)
4670 * bug fix: complex VOP definitions in "user-space" no longer trigger
4671 package locks. (reported by Zach Beane)
4672 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
4673 for funcallable-instance functions, and is no different from
4675 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
4676 characters in the current readtable. (reported by Nicholas Neuss)
4677 * bug fix: SUBTYPEP on various CONS types returns more a more
4678 accurate acknowledgment of its certainty.
4679 * optimizations: REMOVE-DUPLICATES now runs in linear time on
4680 lists in some cases. This partially fixes bug 384.
4681 * flush all standard streams before prompting in the REPL and the
4683 * bug fix: signal handling and triggering gc do not conflict
4684 directly anymore, in particular a high frequency sb-sprof does
4685 not prevent gc from running
4686 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
4687 approximation for timezone and DST information between the
4688 universal time epoch and the smallest negative 32-bit time_t.
4689 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
4690 year 1899 so long as the encoded time is non-negative.
4691 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
4692 the correct answer for non-constant rotate amounts when performing
4693 an inline 32-bit rotation.
4695 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
4696 there is only one thread in the session
4697 ** bug fix: memory leak for streams created in one thread and
4698 written to in another
4699 ** bug fix: lockup when compiled with gcc4
4700 ** bug fix: race that allows the gc to be triggered when gc is
4702 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
4703 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
4705 ** bug fix: finished threads are gc'ed properly
4706 * fixed some bugs revealed by Paul Dietz' test suite:
4707 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
4708 has arguments with a different set of applicable methods from
4709 the orignal arguments.
4710 ** The type error thrown by MAP now has a correct expected-type
4712 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
4713 name a compiled function.
4714 ** Three MISC tests where a large bignum was improperly coerced to
4715 a float that couldn't represent that bignum during type
4716 derivation were fixed.
4717 ** SUBTYPEP can now handle types involving the negation of a
4718 list-form FUNCTION type.
4719 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
4720 as (COMPLEX (AND RATIO (NOT FIXNUM))).
4721 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
4723 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
4724 * New feature: Experimental support for bivalent streams: streams
4725 opened with :element-type :default now allow character and binary
4726 (unsigned-byte 8) I/O
4727 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
4728 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
4730 * bug fix: no more highly sporadic "couldn't check whether ~S is
4731 readable" when reading a stream and an interrupt hits in the middle
4732 of a select system call
4733 * compiler better recognizes complex arrays (reported by Eduardo
4735 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
4736 for variables on SBCL built with linkage-tables. (reported by Luis
4738 * various error reporting improvements.
4739 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
4740 (Thanks to Thiemo Seufer)
4741 * bug fix: nested reader invokations work correctly
4742 * bug fix: it is possible to have simultaneous references to foreign
4743 code and foreign data with the same name.
4745 ** added x86-64 support
4746 ** incompatible change: the threading api now works with thread
4747 objects instead of thread ids
4748 ** bug fix: threads are protected from signals and interruption when
4749 starting up or going down
4750 ** bug fix: a race where an exiting thread could lose its stack to gc
4751 ** bug fix: don't halt on infinite error in threads if possible
4752 ** fixed numerous gc deadlocks introduced in the pthread merge
4753 ** bug fix: fixed thread safety issues in read and print
4754 ** bug fix: debugger doesn't hang on session lock if interrupted at
4755 an inappropriate moment
4756 ** bug fix: run-program is now thread safe(r)
4757 ** bug fix: inner with-recursive-lock no longer releases the mutex
4758 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4759 * fixed some bugs revealed by Paul Dietz' test suite:
4760 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4761 EXPECTED-TYPE slots filled.
4762 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4764 ** MAKE-CONDITION accepts classes as type-designators.
4765 ** COMPILE may never return NIL.
4766 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4767 range before calling Unix time functions
4769 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4770 * numerous signal handling fixes to increase stability
4771 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4772 * minor incompatible change: we now correctly canonize default
4773 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4774 as per the MOP, rather than the historical (INITARG INITFUNCTION
4775 INITFORM). (reported by Bruno Haible)
4776 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4777 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4778 for more information.
4779 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4780 pathname is a directory pathname.
4781 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4782 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4784 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4785 :METACLASS argument in addition to a class name. (reported by
4786 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4787 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4788 (reported by Bruno Haible; patch from Gerd Moellmann)
4789 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4791 * bug fix: more cleanups to the floating point exception handling on
4792 x86-64 (thanks to James Knight)
4793 * bug fix: the compiler does not try to constant fold calls of
4794 COERCE and BIT-* functions when they return freshly constructed
4795 objects. (reported by Nikodemus Siivola and Paul Dietz)
4796 * optimization: improved the MIPS versions of generic (in the
4797 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4798 * optimization: direct conversion of (unsigned-byte 32) to floats on
4799 the PowerPC platform.
4800 * optimization: structure instances with raw slots now use less
4801 memory, and probably show better memory locality. (thanks to
4803 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4804 are treated as requests for stack allocation on the x86-64,
4805 Alpha-32, PPC and SPARC platforms.
4806 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4807 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4808 (thanks to Tony Martinez)
4810 ** gcing a dead thread can no longer lead to lockups
4811 ** threads block signals until they are set up properly
4812 ** errno is no longer shared by threads
4813 ** interrupt-thread restores the eflags register on x86
4814 ** fixed some lockups due to gc/thread interaction
4815 * fixed some bugs revealed by Paul Dietz' test suite:
4816 ** invalid dotted lists no longer raise a read error when
4817 *READ-SUPPRESS* is T
4818 ** signal an error if a symbol that names a declaration is used
4819 as the name of a type, or vice versa
4820 ** allow using the (declare (typespec var*)) abbreviation for
4821 (declare (type typespec var*)) with all type specifiers
4822 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4823 ** always return NIL from PPRINT-POP when OBJECT is NIL
4824 ** don't signal errors when pretty-printing malformed LABELS,
4825 FLET or MACROLET forms
4826 ** declarations in a DOLIST body are also in scope for the
4828 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4830 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4833 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4834 * fixed cross-compiler leakages that prevented building a 32-bit
4835 target with a 64-bit host compiler.
4836 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4837 opened with :IF-EXISTS :OVERWRITE.
4838 * fixed bug 281: error for an invalid qualifier in a short-form method
4839 combination method is not signalled until the faulty method is called.
4840 * bug fix: iteration variable type inferrer failed to deal with open
4841 intervals. (reported by Alan Shields)
4842 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4843 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4844 or more runtime options were provided to the sbcl binary.
4845 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4846 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4847 * optimization: there's now a fast-path for fixnum arguments in the
4848 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4849 * optimization: the code generated on x86-64 is more compact thanks
4850 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4851 * bug fix: floating-point exception handling now partly works on
4852 x86-64. (Thanks to James Knight)
4853 * improvement to the MIPS backend from Thiemo Seufer: C-style
4854 64-bit long long arguments and return values to alien functions
4856 * fixed some bugs revealed by Paul Dietz' test suite:
4857 ** the type-error signalled from WARN has a filled-in DATUM slot.
4858 ** the type-error required when a stream is not associated with
4859 a file has the stream as its datum.
4860 ** type-errors on single-floats on x86-64 no longer have
4861 :INVALID-OBJECT as the datum
4862 ** the type-errors signalled for invalid function names now have
4863 a correct expected type
4864 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4865 for structures defined with a :TYPE. Documentation strings for
4866 typed structures are no longer immediately discarded
4867 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4868 broadcast streams and synonym streams. FILE-LENGTH now also works
4869 on broadcast streams.
4871 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4872 * incompatible change: the --noprogrammer option, deprecated since
4873 version 0.7.5, has been removed. Please use the equivalent
4874 --disable-debugger option instead.
4875 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4877 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4878 inoperational for a while now) has been completely removed.
4879 * null lexical environments are now printed as #<NULL-LEXENV>,
4880 significantly reducing the amount of clutter in typical backtraces.
4881 * documentation on weak pointers, finalization, and after GC hooks
4882 has been added to the manual.
4883 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4884 as other specialized array types, is much faster. SUBSEQ and
4885 COPY-SEQ on such arrays have also been sped up.
4886 * optimization: EQL is now more efficient when at least other argument
4887 is known to be of type (OR FIXNUM (NOT NUMBER)).
4888 * fixed bug: the runtime is now less vulnerable to changes in the
4889 size of the SBCL object on OS X, and virtual memory is reserved for
4890 all spaces that need to be at a fixed address.
4891 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4892 * fixed bug: finalizers and after GC hooks that cause consing are now
4894 * fixed bug: compiler error messages and summaries are now printed to
4895 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4896 * fixed inference of the upper bound of an iteration variable.
4897 (reported by Rajat Datta).
4898 * fixed bug 211e: calling local functions with duplicated constant
4899 keyword argument no longer causes a bogus style warning about an
4901 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4902 ftype declaration to be disregarded. (reported by Dave Roberts)
4903 * fixed bug 373: caused by erronous compilation of references to alien
4904 variables in the runtime on ppc/darwin.
4905 * fixed bug 376: CONJUGATE type deriver.
4906 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4907 (reported by Baughn on #lisp)
4908 * a cross-compiler bug on non-x86 platforms has been identified and
4909 fixed. (thanks to Bruno Haible)
4910 * improvements to the MIPS runtime code for increased stability.
4911 (thanks to Thiemo Seufer)
4912 * increased the maximimum compact environment size to allow
4913 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4914 * partial workaround for bug 135: don't name the function we're
4915 calling for hairy cases of EVAL, so as not to accumulate one environment
4916 entry per call to EVAL. (reported by Kevin Reid)
4917 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4918 * optimization: type testing for non-vector arrays should be faster.
4919 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4921 * bug fix: setting 31st element of a bit vector to zero did not work
4923 * bug fix: redefining a class definition which failed due to a
4924 previous accessor / function clash now works (but see BUGS entry
4925 #380 for more problems in this area). (thanks to Zach Beane)
4926 * the long form of DEFINE-METHOD-COMBINATION disables method group
4927 checking when given a single method group with pattern *. (thanks
4929 * on x86 compiler supports stack allocation of results of simple
4930 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4931 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4932 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4933 * fixed some bugs related to Unicode integration:
4934 ** the restarts for recovering from input and output encoding
4935 errors only appear when there is in fact such an error to
4937 * fixed some bugs revealed by Paul Dietz' test suite:
4938 ** MISC.549 and similar: late transformation of unsafe type
4939 assertions into derived types caused unexpected code
4941 ** SCALE-FLOAT type deriver is less wrong.
4942 ** type derivers for EXP, LOG and similar functions compute result
4943 types for complex arguments better.
4944 ** (MISC.563) CONJUGATE type deriver works for very restricted
4946 ** out-of-line type testers for character strings are available.
4947 ** EQUAL compiler transform understands specialness of objects
4949 ** accessing double-floats stored on the stack now works on x86-64.
4950 ** debugger internals could sometimes create invalid lispobjs,
4951 resulting in GC crashes.
4952 ** MISC.548: type check weakening can convert required type into
4954 ** initialization forms for bindings are not in scope of free special
4957 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4958 * incompatible change: thread support for non-NPTL systems has
4959 been removed - locking is buggy and unreliable. A threaded
4960 SBCL build will now warn at startup and refuse to create
4961 new threads, unless futex support is detected in the kernel
4962 * incompatible change: the top level REPL now has only an ABORT
4963 restart associated with it, not TOPLEVEL and ABORT as it used to.
4964 TOP and TOPLEVEL are now available as debugger commands for
4965 returning to the top level.
4966 * incompatible change: forms evaluated in the REPL now use the
4967 global optimization policy.
4968 * incompatible change: user- and system-initialization files are
4969 no longer processed with LOAD, but by READ and EVAL; hence the
4970 global optimization policy, startup package, readtable, etc,
4972 * The .fasl file format number has been incremented because of
4973 various incompatible changes.
4974 * internal entry point details and argument counts no longer appear
4975 in backtraces unless explicitly requested by setting
4976 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4977 * built-in and standard functions no longer have names like "top
4978 level local call to FOO".
4979 * fixed bug 32: functions defined in non-null lexical environments
4980 now have more legible printed representation
4981 * fixed bug 33: functions defined in non-null lexical environemnts
4982 are now more amenable to inspection by INSPECT.
4983 * workaround for bug 354: XEPs no longer appear in backtraces unless
4984 explicitly requested.
4985 * fixed bug: receiving the signal which results from attempting to
4986 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4987 SIGBUS on other *BSDs) on architectures where the C stack is also
4988 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4989 to debugger confusion or wild instability. (reported by Cheuksan
4991 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4992 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4993 (reported by Lutz Euler)
4994 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4995 compiled code. (reported by Paul Dietz)
4996 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4997 specialized parameter to a method to something that is not TYPEP
4998 the specializer is now possible.
4999 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
5000 face of package deletion.
5001 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
5002 pathname. (reported by David Tolpin on c.l.l)
5003 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
5004 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
5005 STRING-STREAM and FILE-STREAM, respectively.
5006 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
5007 than previously; in addition, its test suite is now run on build.
5008 (thanks to Luke Gorrie)
5009 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
5010 * optimization: added a immediate representation for single-floats
5012 * fixed some bugs revealed by Paul Dietz' test suite:
5013 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
5014 ** attempting to create a package with a colliding nickname causes
5015 correctable errors to be signalled.
5016 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
5017 ** several x86-64 backend bugs related to sign-extension of immediate
5020 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
5021 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
5022 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
5024 * fixed loading of multiply forward-referenced layouts.
5025 (thanks to Cheuksan Wang)
5026 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
5027 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
5028 (see COMPILE-FILE documentation for details of :PRINT option)
5029 * fixed bugs 19 and 317: fixed-format floating point printing is
5030 more accurate. This also fixes a bug reported by Adam Warner
5031 related to the ~@F format directive.
5032 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
5034 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
5035 dispatch table if the from-char is a dispatch macro character.
5036 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
5037 by the wordsize no longer ignore the last word. (reported by Lutz
5039 * fixed bug in type checking of dynamic-extent variables. (reported
5041 * optimization: sequence traversal functions use their freedom to
5042 coerce function designators to functions.
5043 * optimization: code with many calls to CLOS methods specialized on
5044 CLOS classes has had redundant type checks removed.
5045 * optimization: added declarations to speed up operations that access
5046 the internal character database (for example STRING-UPCASE)
5047 * optimization: comparison operations between floats and sufficiently small
5048 fixnums no longer create extra rationals
5049 * fixed some bugs related to Unicode integration:
5050 ** portions of multibyte characters at the end of buffers for
5051 character-based file input are correctly transferred to the
5052 start of the buffer at the next read.
5053 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
5054 passing it through to OPEN.
5055 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
5056 argument given to internal calls to OPEN.
5057 ** the built-in comment readers (introduced by character sequences
5058 ";" and "#|") are more forgiving to encoding errors; they will
5059 STYLE-WARN and then attempt to resync the stream at a character
5060 boundary. (thanks to Teemu Kalvas)
5061 * fixed some bugs in the x86-64 port:
5062 ** Negative short int return values from c-calls are sign-extended
5064 ** The stack is aligned to 16-bytes for c-calls, as required by
5065 the ABI. (thanks to Cheuksan Wang)
5066 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
5067 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
5068 for enums. (thanks to Vincent Arkesteijn)
5069 ** Multiple small optimizations and bugfixes for floating point
5071 * fixed some bugs revealed by Paul Dietz' test suite:
5072 ** Space, Tab, Linefeed, Return and Page have the invalid
5073 secondary constituent character trait.
5074 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
5076 ** WITH-INPUT-FROM-STRING should only update the index place on
5078 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
5079 works more reliably.
5080 ** Bit-array operations (BIT-AND and similar) worked incorrectly
5081 with one-dimensional arrays with fill pointers.
5082 ** TYPE-OF failed on a complex with an integer realpart and a
5084 ** compiler failure during type inference for the code of form
5085 (IF (EQL X (THE ...)) ...) (MISC.535).
5087 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
5088 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
5089 platform. The port supports 61-bit fixnums, large memory spaces
5090 and reloading shared object files.
5091 * enhancement: saving cores with foreign code loaded is now
5092 supported on ppc/Darwin in addition to the previously supported
5094 * enhancement: the statistical profiler now walks deeper into the
5095 call stack for more meaningful call-graphs and accrued time
5096 reports (x86/x86-64 only). It also now reports time spent in
5098 * enhancement: it is now possible to trace most individual methods
5099 of a generic function in addition to tracing the generic function
5101 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
5103 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
5104 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
5105 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
5106 produces an error. (thanks to Vincent Arkesteijn)
5107 * bug fix: NAMESTRING on pathnames with :WILD components in their
5108 directories works correctly. (thanks to Artem V. Andreev)
5109 * fixed bug 125: compiler preserves identity of closures. (reported
5111 * bug fixed: functions with &REST arguments sometimes failed with
5112 "Undefined function" when compiled with (DEBUG 3). (reported by
5114 * bug fix: overflow during compiling of setting element of a bit
5115 vector with constant index and value. (reported by Timmy Douglas)
5116 * build fix: fixed the dependence on *LOAD-PATHNAME* and
5117 *COMPILE-FILE-PATHNAME* being absolute pathnames.
5118 * on x86 compiler partially supports stack allocation of dynamic-extent
5120 * GO and RETURN-FROM do not check the extent of their exit points
5121 when compiled with SAFETY 0.
5122 * fixed some bugs related to Unicode integration:
5123 ** encoding and decoding errors are now much more robustly
5124 handled; it should now be possible to recover even from invalid
5125 input or output to the terminal. (thanks to Teemu Kalvas)
5126 ** provided a first cut at implementing STRING-TO-OCTETS and
5127 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
5128 ** altered the SB-MD5 contributed module slightly, changing the
5129 interface just enough for it to be supportable for builds where
5130 lisp characters are not eight bits.
5131 * fixed some bugs revealed by Paul Dietz' test suite:
5132 ** the FORMATTER-generated functions for ~V[ conditionals require
5133 the correct number of arguments.
5134 ** READ-FROM-STRING returns the mandated second value when applied
5135 to displaced strings.
5136 ** the #\Rubout and #\Backspace characters are treated as invalid
5137 constituent characters by the tokenizer.
5139 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
5140 * new feature: reloading changed shared object files with
5141 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
5142 * new feature: references to foreign variables and functions
5143 can now be compiled and loaded before the corresponding shared
5144 object file is loaded, as long as the foreign definitions are
5145 available at runtime.
5146 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
5147 supported. (thanks to Dan Debertin)
5148 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
5149 just keywords. (thanks to Vincent Arkesteijn)
5150 * fixed bug #331: structure-class instances corresponding to
5151 DEFSTRUCT forms are now created eagerly.
5152 * fixed bug #345: backtraces from calls to undefined functions work
5153 on x86 as well. Related bug #61 is now also partially fixed on x86
5154 (backtraces from throws to unknown catch tags.)
5155 * bug fix: lambda-list parsing is now stricter vrt. order and number
5156 of lambda-list keywords.
5157 * bug fix: as specified by AMOP, an error is signalled if a
5158 class-option appears multiple times in a DEFCLASS form. (reported
5160 * bug fix: RANDOM can be compiled when the compiler derives the type
5161 of its numeric argument as a disjoint set of small integers.
5162 (reported by Paul Dietz)
5163 * bug fix: starting a core saved with shared objects loaded when
5164 those objects are not available no longer causes threaded SBCL to
5165 hang. (reported by Sean Ross)
5166 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
5168 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
5169 argument, which must always be NIL. (reported by Kalle Niemitalo)
5170 * bug fix: printing 1.0d+23 no longer results in an error.
5171 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
5172 * bug fix: structure slot setters preserve evaluation order. (thanks
5174 * fixed some bugs related to Unicode integration:
5175 ** RUN-PROGRAM can allow its child to take input from a Lisp
5176 stream. (reported by Stefan Scholl)
5177 ** ASDF-INSTALL successfully downloads .tar.gz files in all
5178 locales. (reported by Ken Causey)
5179 * fixed some bugs revealed by Paul Dietz' test suite:
5180 ** INCF, DECF and REMF evaluate their place form as specified in
5182 ** FORMATTER expands ~{ ~} iteration directives with V or #
5183 parameters correctly.
5184 ** FORMATTER deals with the ~@[ ~] conditional directive where the
5185 consequent uses no arguments correctly.
5186 ** the system has a partial understanding of the (COMPLEX RATIO)
5188 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
5191 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
5192 * new feature: a build-time option (controlled by the :SB-UNICODE
5193 keyword feature, enabled by default) for building the system with
5194 support for the entire 21-bit character space defined by the
5196 * new feature: the system now has rudimentary external-format
5197 support; the primary user-visible change at this time is that
5198 characters with the high bit set (such as lower-case-e-acute) will
5199 print correctly to a terminal in a UTF-8 environment.
5200 * minor incompatible change: BASE-CHAR no longer names a class;
5201 however, CHARACTER continues to do so, as required by ANSI.
5202 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
5203 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
5204 has been moved to the SB-EXT package (temporarily re-exported from
5206 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
5207 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
5209 * fixed bug #351: better error-handlind and reporting for malformed
5211 * fixed bug #350: bignum-printing is now more memory-efficient,
5212 allowing printing of very large bignums, eg. (expt 2 10000000).
5213 (reported by Bruno Haible)
5214 * fixed bug #302: better primitive-type selection for intersection
5216 * fixed bug #308: non-graphic characters now all have names, as
5217 required. (reported by Bruno Haible)
5218 * bug fix: redefining a class with different superclasses now correctly
5219 removes it from the direct-subclasses of its previous superclasses.
5220 (reported by David Morse)
5221 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
5222 new value now works. (reported by Bruno Haible)
5223 * bug fix: correct canonicalization of multiple non-standard slot
5224 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
5225 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
5226 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
5227 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
5228 now exists, an signals an error.
5229 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
5230 during macroexpansion for non-iteration variables as well. (reported
5231 by Bruno Haible for CMUCL)
5232 * bug fix: Cyclic structures and unprintable objects in compiler
5233 messages no longer cause errors. (reported by Bruno Haible)
5234 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
5235 and READ-FROM-STRING all now return a primary value of NIL if
5236 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
5237 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
5238 (reported by Bruno Haible for CMUCL)
5239 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
5240 do not designate a condition. (reported by Bruno Haible for
5242 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
5243 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
5244 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
5245 permitting resolution in favour of any of the conflicting symbols.
5246 (reported by Bruno Haible for CMUCL)
5247 * bug fix: EQUAL compiler optimizations is less aggressive on
5248 strings which can potentially compare true despite having distinct
5249 specialized array element types.
5250 * bug fix: unit enumerations can be defined without dividing by
5251 zero. (thanks to Vincent Arkesteijn)
5252 * FORMAT compile-time argument count checking has been enhanced.
5253 (report from Bruno Haible for CMUCL)
5254 * a partial workaround for the bug 262: the compiler does not try to
5255 inline-expand a local function doing RETURN-FROM from a deleted
5256 BLOCK. (thanks to Peter Denno for the bug report and to David
5257 Wragg for the simple test case)
5258 * fixed some bugs revealed by Paul Dietz' test suite:
5259 ** RENAME-PACKAGE allows all package designators as new package
5261 ** constraint propagation and lambda variable substitution are
5262 more cautious in dealing with partially deleted code.
5263 ** compiler sometimes lost reoptimization passes.
5264 ** CERROR, given a condition as condition designator, passes its
5265 remaining arguments to the continue format control without
5267 ** Case-altering FORMAT directives work correctly on non-ASCII
5269 ** The REAL type specifier handles bounds outside the floating
5270 point ranges without signalling FLOATING-POINT-OVERFLOW.
5271 ** Functions with IR1-transformations can create intercomponent
5272 references to global functions.
5273 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
5275 ** FORMAT ~R treats a nil value for its first parameter correctly.
5277 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
5278 * enhancement: saving cores with foreign code loaded is now
5279 supported on x86/NetBSD and sparc/Linux in addition to the previously
5280 supported platforms.
5281 * bug fix: on some platforms repeated installations caused multiple
5282 copies of HTML documentation to be installed -- should not happen
5283 any more. (reported by Stefan Scholl)
5284 * bug fix: parsing self-recursive alien record types multiple times
5285 no longer causes infinite recursion. (reported by Thomas F. Burdick,
5286 original patch by Helmut Eller for CMUCL)
5287 * bug fix: stack-exhaustion detection works now on NetBSD as well.
5288 (thanks to Richard Kreuter)
5289 * bug fix: defining classes whose accessors are methods on existing
5290 generic functions in other (locked) packages no longer signals
5291 bogus package lock violations. (reported by François-René Rideau)
5292 * bug fix: special variables as DEFMETHOD parameters no longer have
5293 associated bogus type declarations. (reported by David Wragg and
5295 * bug fix: read-write consistency on streams of element-type
5296 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
5297 * bug fix: redefiniton of the only method of a generic function with
5298 no DEFGENERIC no longer emits a full WARNING. In addition,
5299 redefinition of generic functions with no DEFGENERIC to an
5300 incompatible lambda list now signals an error. (thanks to Zach
5302 * bug fix: DEFGENERIC now works even when there's a function of the
5303 same name in an enclosing lexical environment. (thanks to Zach
5305 * fixed compiler failure, caused by instrumenting code during
5306 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
5307 * optimization: added loop analysis and improved register allocation
5308 * fixed some bugs revealed by Paul Dietz' test suite:
5309 ** POSITION on displaced vectors with non-zero displacement
5310 returns the right answer.
5311 ** (SIMPLE-STRING) is a valid type specifier for sequence
5313 ** *PRINT-LEVEL* handling for slotless structures is pedantically
5315 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
5316 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
5318 ** The justification version of the FORMAT ~< directive treats
5319 non-zero minpad parameter correctly.
5321 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
5322 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
5323 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
5324 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
5325 the supported interface.
5326 * new feature: Single-stepping of code compiled with DEBUG 2 or
5327 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
5328 * new feature: saving cores with foreign code loaded is now
5329 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
5330 Timothy Moore's work for CMUCL)
5331 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
5332 parameters to * instead of NIL if no initform is supplied.
5333 (reported by Johan Bockgaard)
5334 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
5335 correctly when FUNCALL appears as the car of the form. Note:
5336 despite this FUNCALL forms are not currently subject to
5337 compiler-macro expansion. (port of Raymond Toy's fix for the
5338 same from CMUCL, reported by Johan Bockgaard)
5339 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
5340 (thanks for Teemu Kalvas)
5341 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
5342 case instead of terminating the iteration (thanks for Julian
5343 Squires, Sean Champ and Raymond Toy)
5344 * bug fix: incorrect expansion of defgeneric that caused a style
5345 warning. (thanks for Zach Beane)
5346 * bug fix: slot accessor effective method computation works properly
5347 for classes with multiple non-standard applicable methods on
5348 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
5349 * on x86 compiler supports stack allocation of results of LIST and
5350 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
5351 CMUCL implementation by Gerd Moellmann)
5352 * fixed some bugs revealed by Paul Dietz' test suite:
5353 ** FORMAT strings with both the ~<~:;~> form of the justification
5354 directive and pretty-printing directives cause an error.
5356 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
5357 * incompatible change: the internal functions
5358 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
5359 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
5360 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
5361 instead of the old functions.
5362 * new feature: on platforms where "dladdr" is available foreign
5363 function names now appear in backtraces. (based on Helmut Eller's
5365 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
5366 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
5368 * documentation: ASDF manual is now distributed with SBCL.
5369 * bug fix: SBCL can now load its contributed modules with REQUIRE
5370 even if the system-provided entries have been removed from
5371 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
5373 * bug fix: backtraces involving undefined functions or assembly
5374 routines are more informative. (thanks to Brian Downing)
5375 * bug fix: mutually referent alien structures now work correctly.
5376 (reported by Rick Taube)
5377 * bug fix: structures defined by WITH-ALIEN can be referred to
5378 within other definitions in the same WITH-ALIEN.
5379 * bug fix: division operators (MOD, TRUNCATE and the like) with
5380 constant zero divisors and integer dividends no longer generate
5382 * bug fix: provide default methods for INPUT-STREAM-P and
5383 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
5384 * bug fix: improve the detection and resolution of MOP metacycles
5385 (where effective method computation depends on the generic function
5386 having its effective method computed). (reported by Bruno Haible)
5387 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
5388 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
5389 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
5390 * bug fix: pathnames with relative directory components can be
5391 represented relative to default pathnames.
5392 * optimization: in taking the GCD of bignums, reduce the two bignums
5393 to approximately the same size (using Euclid's algorithm) before
5394 applying the more sophisticated binary GCD. (thanks to Juho
5396 * optimization: COUNT on bitvectors now operates word-at-a-time.
5397 * optimization: ASH with a positive, but not necessarily constant,
5398 (leftwards) shift, when in a modular context, is compiled to a
5400 * fixed some bugs revealed by Paul Dietz' test suite:
5401 ** FORMAT variable parameters ("~V<char>") are defaulted properly
5402 if the corresponding argument is NIL.
5403 ** FORMAT directives accepting a minpad parameter treat negative
5405 ** literal commas as character parameters to FORMAT directives are
5407 ** literal spaces directly after ~<Newline> directives within a
5408 format-logical-block (~:< ~@:>) do not induce :FILL-style
5409 conditional newlines.
5410 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
5411 as specified: it no longer includes conditional newlines).
5412 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
5414 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
5415 :PER-LINE-PREFIX argument does not evaluate to a string.
5417 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
5418 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
5419 the manual for details; for now, package locks can be disabled by
5420 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
5421 if no major problems are found then it is likely that they will be
5422 compiled in unconditionally.
5423 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
5424 unsupported operators on all platforms. To load a shared library
5425 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
5426 object file, link it into a shared library outside of SBCL and
5427 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
5429 * bug workaround: ROOM T and the GC were not working together
5430 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
5431 reporting facility aren't preserved. That reporting has been
5432 disabled, so now until and unless someone figures out how to make it
5433 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
5434 * minor incompatible change: as threatened around sbcl-0.8.0, the
5435 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
5436 The symbols are also exported from SB-PCL for backwards
5437 compatibility, but more so than before SB-PCL should be treated as
5438 an implementation-internal package.
5439 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
5441 * the SB-SPROF contrib now works on (most) non-x86 architectures.
5442 It is known as of this release not to work on the Alpha, however.
5443 * fixed bug #167: errors signalled due to illegal syntax in method
5444 bodies are now more legible.
5445 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
5446 designators and can hence be used with TYPEP.
5447 * fixed bug #333: CHECK-TYPE now ensures that the type error
5448 signalled, if any, has the right object to be accessed by
5449 TYPE-ERROR-DATUM. (reported by Tony Martinez)
5450 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
5451 5.1.2.3 for multiple-value place subforms. (reported by Kalle
5453 * fixed bug #334: programmatic addition of slots using specialized
5454 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
5455 and :ALLOCATION :CLASS slots.
5456 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
5457 float exponents. (rereported by Peter Seibel)
5458 * fixed a bug: #\Space (and other whitespace characters) are no
5459 longer considered to be macro characters in standard syntax by
5460 GET-MACRO-CHARACTER.
5461 * fixed bug: initialization of condition class metaobjects no longer
5462 causes an instance of the condition to be created. (reported by
5464 * fixed bug: it is now possible to have slots such that
5465 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
5466 description is neither :INSTANCE nor :CLASS.
5467 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
5468 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
5469 SLOT-VALUE-USING-CLASS), and no longer causes errors with
5470 non-standard SLOT-DEFINITION-ALLOCATION values.
5471 * fixed bugs: various race conditions handling exiting threads.
5472 CL-PPCRE's thread torture test now passes.
5473 * fixed arguably-a-bug: GC time proportional to number of threads in
5474 system even when most of them are idle
5475 * optimization: improved performance of BIT and SBIT on bit-vectors.
5476 * .fasl file incompatibility: The fasl file version number has
5477 been incremented because of changes associated with package locks.
5479 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
5480 * minor incompatible change: the system no longer provides
5481 optimization hints (conditions which are TYPEP
5482 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
5483 mode; these hints are still emitted when higher SPEED optimization
5485 * new contrib module: a sampling profiler (profiling by statistical
5486 sampling, rather than by instrumenting functions) is available as
5487 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
5488 * the behaviour of the standard function ED is now customizeable by
5489 third parties through a hook variable: see ED's documentation
5490 string for information on the protocol.
5491 * the compiler no longer emits efficiency notes for (FUNCALL X)
5492 when the type of X is uncertain under default optimization
5494 * fixed bug 276: mutating a binding of a specialized parameter to a
5495 method to something that is not TYPEP the specializer is now
5497 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
5498 exhibit the required behaviour on the x86 platform. (thanks to
5499 Peter van Eynde, Eric Marsden and Bruno Haible)
5500 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
5501 even for difficult arguments. (reported by Peter Graves)
5502 * fixed bug 141a: the backquote printer now descends quoted
5504 * fixed another bug in backquote printing: no more destructive
5505 modification of the form's list structure. (reported by Brian
5507 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
5508 move between its address being taken and the call to
5509 interrupt_thread, fixing a crashing race condition.
5510 * the SB-POSIX contrib implementation has been adjusted so that it
5511 no longer exhibits ridiculously poor performance when constructing
5512 instances corresponding to C structs.
5514 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
5515 * minor incompatible change: the sb-grovel contrib now treats C
5516 structures as alien (in the sense of SB-ALIEN) objects rather than
5517 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
5518 has implications for memory management of client code
5519 (sb-grovel-returned objects must now be manually managed) and for
5520 type safety (alien objects now have full types).
5521 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
5522 used to control emission of compiler diagnostics, rather than the
5523 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
5524 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
5525 quality should be considered deprecated.
5526 * install.sh now installs the user manual as well
5527 * (not quite a new documentable feature, but worth considering in
5528 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
5529 beginnings of a semantically meaningful condition hierarchy is
5530 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
5532 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
5533 designator as the defaults argument.
5534 * fixed bug: Displaced arrays whose displaced-to array has become
5535 too small now cause ARRAY-DIMENSION to signal an error, providing
5536 for safer bounds-checking. (reported by Bruno Haible)
5537 * fixed bug: DEFCLASS slot definitions with identical :READER and
5538 :WRITER names now signal a reasonable error. (reported by Thomas
5540 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
5542 * fixed bug: Invalid slot specification errors now print correctly.
5543 (thanks to Zach Beane)
5544 * fixed bug 320: Shared to local slot value transfers in class
5545 redefinitions now happen corrently from superclasses as
5546 well. (reported by Bruno Haible)
5547 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
5549 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
5550 improper lists correctly. (reported by Bruno Haible)
5551 * fixed bug 313: source-transform for <fun-name> was erroneously
5552 applied to a call of a value of a variable with name <fun-name>.
5553 (reported by Antonio Menezes Leitao)
5554 * fixed bug 307: The obsolete instance protocol ensures that
5555 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
5556 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
5557 remove dead unknown-values globs from the middle of the stack.
5558 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
5559 easier to resume long computations after using *BREAK-ON-SIGNALS*
5560 to diagnose and fix failures. (thanks to Nikodemus Siivola)
5561 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
5562 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
5563 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
5564 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
5565 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
5567 * fixed a (fairly theoretical) bug in string printing: if
5568 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
5569 does not have array-element-type equal to the most general string
5571 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
5572 function name. (thanks to Nikodemus Siivola)
5573 * fixed bug: compile-time format string checker failed on
5574 non-closed ~{. (reported by Thomas F Burdick)
5575 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
5576 don't warn on legal loop code involving more than one aggregate
5577 boolean. (thanks to Nikodemus Siivola)
5578 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
5579 in keyword position to MAKE-PACKAGE was not being reported as
5581 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
5582 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
5584 * fixed bugs 280 and 312: the checking for multiple definitions in a
5585 file is less likely to become confused by uses of inline
5587 * fixed bug: the #S reader macro performs the keyword coercion
5588 specified for slot names. (reported by Kalle Niemitalo)
5589 * fixed bug: lambda lists may contain symbols whose names start with
5590 & but are not lambda-list-keywords; their occurrence triggers a
5592 * fixed bug 321: define-method-combination argument lambda lists do
5593 not cause invalid code to be generated when &optional or &aux
5594 variables have default values. (reported by Bruno Haible)
5595 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
5596 have CLOS classes; this appears also to have fixed reported
5597 instability in stack exhaustion detection.
5598 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
5599 MUFFLE-WARNING when no associated restart is present is now
5601 * optimization: rearranged the expansion of various defining macros
5602 so that each expands into only one top-level form in a
5603 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
5605 * optimization: used a previously little-used slot in symbols to
5606 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
5608 * fixed some bugs revealed by Paul Dietz' test suite:
5609 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
5611 ** Fixed an optimization bug related to inheritance of initforms
5612 from local to shared slots.
5613 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
5614 ** CAST optimizer forgot to flush argument derived type.
5615 ** print/read consistency on floats is now orders of magnitude
5616 more likely. (thanks also to Bruno Haible for a similar report
5618 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
5619 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
5620 for objects of type REAL. Make it so.
5621 ** SXHASH is specified (infelicitously) to respect similarity,
5622 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
5623 it so. (thanks to Markus Ziegler)
5624 ** on the Alpha, the compiler succeeds in compiling functions
5625 returning a known number of arguments greater than 63.
5626 ** fixed handling of invalid NIL arguments in keyword position
5628 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
5630 ** provided a readably-printable representation for RANDOM-STATE
5632 ** ensured that pathnames, where they have a namestring, always
5633 print using #P"..." syntax.
5635 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
5636 * Support for the forthcoming 2.0 version of the NetBSD kernel
5637 running on x86 hardware has been added. (thanks to Perry
5638 E. Metzger most immediately, and others for their past work)
5639 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
5640 current release version; SBCL's OpenBSD support had been broken
5641 since about the time of OpenBSD's switch to ELF binary format.)
5642 * [placeholder for DX summary]
5643 ** user code with &REST lists declared dynamic-extent, under high
5644 speed or space and low safety and debug optimization policy.
5645 * The manual has been converted to Texinfo format and the debugger
5646 chapter from the cmucl manual has been added.
5647 * A facility has been added to extract documentation strings from
5648 sbcl and store them as Texinfo-formatted snippets for inclusion in
5649 the manual (via Texinfo's @include directive)
5650 * bug fix: compiler emitted division in optimized DEREF. (thanks for
5651 the test case to Dave Roberts)
5652 * bug fix: multidimensional simple arrays loaded from FASLs had fill
5653 pointers. (reported by Sean Ross)
5654 * bug fix: PROFILE output is printed nicely even for large numerical
5655 values. (thanks to Zach Beane)
5656 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
5657 greater than 32 handle EOF correctly.
5658 * bug fix: on X86 an immediate argument of the IMUL instruction is
5659 correctly printed in disassembly. (thanks to Lutz Euler)
5660 * bug fix: class slots in redefined classes preserve their old
5661 values. (thanks to Bruno Haible and Nikodemus Siivola)
5662 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
5663 succeeds. (reported by Marco Baringer)
5664 * fixed some bugs revealed by Paul Dietz' test suite:
5665 ** READ-SEQUENCE now works on ECHO-STREAMs.
5666 ** RATIONALIZE works more according to its specification. (thanks
5669 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
5670 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
5671 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
5672 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
5673 should matter to you only if you rebind the printer control
5674 variables and then find you want different bindings in the
5675 debugger than in the ordinary execution of your program.)
5676 * The runtime build system has been tweaked to support building
5677 (on SPARC/SunOS) using a C compiler which invokes Sun's own
5678 assembler and linker. (thanks to Nikodemus Siivola)
5679 * Unbound, undefined, undeclared variables now trigger full
5680 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
5681 more often programmer error than deliberate exploitation of undefined
5683 * optimization: the hash algorithm for strings has changed to one
5684 that is less vulnerable to spurious collisions. (thanks to Juho
5686 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
5687 needless bounds checking. (thanks to Juho Snellman)
5688 * optimization: implemented multiplication as a modular
5689 (UNSIGNED-BYTE 32) operation on the PPC backend.
5690 * fixed some bugs revealed by Paul Dietz' test suite:
5691 ** ADJUST-ARRAY now copies the datum in a zero rank array if
5693 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
5694 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
5695 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
5697 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
5699 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
5701 ** ECHO-STREAMs no longer attempt to echo the end of file value to
5702 their output stream on EOF from read.
5703 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
5704 have been read to end-of-file.
5705 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
5707 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
5708 description of determination of which consecutive characters
5710 ** Printing the "Space" character with escaping on now yields "#\\ ",
5711 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
5712 ** Reading floating-point numbers with *READ-BASE* set to a number
5713 less than 10 works correctly.
5714 ** Reading floating-point numbers with *READ-BASE* set to a number
5715 more than 10 works correctly.
5716 ** Printing with *PRINT-READABLY* targets the standard readtable, not
5717 the readtable currently in effect.
5719 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
5720 * minor incompatible change: parsing of namestrings on a physical
5721 (Unix) host has changed; numbers after the final #\. in a
5722 namestring are no longer interpreted as a version field. This is
5723 intented to be largely invisible to the user, except that the
5724 meaning of the namestring "*.*.*" has changed: it now refers to a
5725 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
5726 should usually be replaced by
5727 (make-pathname :name :wild :type :wild :version :wild)
5728 with the added benefit that this is more likely to be portable.
5729 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
5730 option to OPEN now signals an error if the file being opened
5731 exists; this may have an impact on existing code.
5732 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
5733 signals received, on the PowerPC platforms (both Linux and
5734 Darwin). (thanks to Pierre Mai for pointing out the location of
5736 * several fixes on OS X: The system now builds and runs cleanly on
5737 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
5738 (thanks to Brian Mastenbrook)
5739 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
5740 second-resolution: integer multiples of 1/3600 between -24 and 24.
5741 (thanks to Vincent Arkesteijn)
5742 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
5743 type when called with 1 argument; PEEK-CHAR checked type of
5744 PEEK-TYPE only after having read first character from a
5745 stream. (reported by Peter Graves)
5746 * bug fix: the garbage collector now has much better locality
5747 behaviour, and in particular no longer treats all memory as being
5748 exhausted when many small objects point to each other in a deeply
5750 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
5751 recognized as being TYPEP their class.
5752 * bug fix: the PUSHNEW documentation string has been corrected.
5753 (thanks to Vincent Arkesteijn)
5754 * bug fix: defaulting of the value for the last of an atypically
5755 large number of multiple values being bound was not being
5756 performed correctly on the Alpha or PPC platforms
5757 * optimization: implemented multiplication as a modular
5758 (UNSIGNED-BYTE 32) operation on the x86 backend.
5759 * optimization: SEARCH on simple-base-strings can now be open-coded.
5760 (see also contrib/compiler-extras.lisp for inspiration for
5761 teaching the compiler about the Boyer-Moore algorithm).
5762 * value, returned by MAX (and MIN) called with several EQUALP, but
5763 not EQL, arguments now does not depend on compiler settings.
5764 * fixed some bugs revealed by Paul Dietz' test suite:
5765 ** in stack analysis liveness information is propagated from
5766 non-local entry points.
5767 ** pathwise CAST removing failed when the CAST node did not start
5769 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5770 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5772 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5773 host is already defined.
5774 ** RENAME-FILE works on streams instead of signalling an internal
5776 ** PEEK-CHAR uses the current readtable when determining whether
5777 or not a character is whitespace.
5778 ** MERGE-PATHNAMES handles the case when the pathname does not
5779 specify a name while the default-pathname specifies a version.
5780 ** Pathnames now stand a better chance of respecting print/read
5782 ** Attempting to use standardized file system operators with a
5783 pathname with invalid :DIRECTORY components signals a
5785 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5787 ** DIRECTORY on logical pathnames is more correct.
5788 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5789 signal a TYPE-ERROR if their argument is not a stream.
5790 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5791 designator argument does not designate a stream.
5792 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5793 examining the synonym.
5794 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5796 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5797 element-type larger than ([UN]SIGNED-BYTE 32).
5799 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5800 * When built with the :SB-FUTEX feature, threaded builds now take
5801 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5802 for faster/more reliable mutex and condition variable support.
5803 * Incompatible change (but one you probably shouldn't have been using
5804 anyway): the interface and code for arbitrating between multiple
5805 threads in the same user session has been redesigned.
5806 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5807 error when called without an explicit environment argument.
5808 (thanks to Nikodemus Siivola)
5809 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5810 confused about their position. (thanks to Adam Warner and Gerd
5812 * bug fix: Pretty printing backquoted forms with unquotations in the
5813 argument list position of various code constructs such as LAMBDA
5814 now works correctly. (reported by Paul Dietz)
5815 * bug fix: Pretty printing unquotations no longer loses all
5816 stream position information.
5817 * optimization: performance of string output streams is now less
5818 poor for multiple small sequence writes.
5819 * optimization: performance of CSUBTYPEP in the presence of complex
5820 expressions involving CONS and NOT many times has been improved.
5821 (reported by Paul Dietz)
5822 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5824 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5825 streams for the REPL, for the debugger, and so on. (thanks to
5827 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5828 * fixed some bugs revealed by Paul Dietz' test suite:
5829 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5830 is ignored if it is too small, rather than propagating through
5831 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5832 ** extremely complex negations of CONS types were not being
5833 sufficiently canonicalized, leading to inconsistencies in
5835 ** VALUES tranformer lost derived type.
5837 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5838 * fixed a bootstrapping bug: the build process no longer assumes
5839 that the various BOOLE-related constants have the same value in
5840 host and target lisps. (noted by Paul Dietz' test suite on an
5841 SBCL binary built from CLISP)
5842 * The system can now be dynamically linked on the MIPS platform,
5843 which enables dynamic loading of foreign code from Lisp. (thanks
5844 to Ralf Baechle for discussions on the MIPS ABI)
5845 * The system now records debugging information for its own source
5846 files in a filesystem-position-independent manner, relative to
5847 the "SYS" logical host.
5848 * fixed a compiler bug: MV-LET convertion did not check references
5849 to the "max args" entry point. (reported by Brian Downing)
5850 * tweaked disassembly notes to be less confident about proclaiming
5851 some instruction as an LRA. (thanks to Brian Downing)
5852 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5853 now each have their own history, command character, and other
5854 characteristics. (thanks to David Lichteblau)
5855 * fixed some bugs revealed by Paul Dietz' test suite:
5856 ** compiler failure in compiling LOGAND expressions including a
5858 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5859 shift greater than 32.
5860 ** FLUSH-DEST did not mark blocks for type check regeneration.
5861 ** HANDLER-CASE failed to accept declarations in handler clauses
5862 in some circumstances.
5864 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5865 * New code in contrib/sb-introspect (still probably not entirely
5866 stable yet) provides some support for smart Lisp development
5867 environments like SLIME.
5868 * The conditions signalled for errors occurring when loading .fasl
5869 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5870 in a way which should help ASDF recover gracefully.
5871 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5872 stuff has been cleaned up. If you code contrib/ stuff, this might
5873 affect you, and you can look at contrib/README, contrib/STANDARDS,
5874 and/or the 0.8.4.27 diff to check.
5875 * In full calls the compiler now does not generate checks for declared
5876 argument types for all arguments.
5877 * various threading fixes
5878 ** and some experimental patches which didn't make it into
5879 the main tree for this release, but which are shipped in
5880 contrib/experimental-thread.patch as a possible fix for some
5881 failures (deadlock, spinning...) in GC-intensive multithreaded
5883 * fixed PPC build problem (source code incompatibility of different
5884 library versions): added offsetof() hackery which attempts to divine
5885 where glibc maintainers put uc_mcontext today
5886 * fixed bug 282: compiler does not trust type assertions while passing
5887 arguments to a full call.
5888 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5889 &OPTIONAL VALUES type parameter.
5890 * fix bug 214: algorithm for noting rejected templates is now more
5891 similar to that of template seletion. (also reported by rydis on
5893 * fixed bug 141b: printing backquoted information readably and prettily
5894 inserts a space where necessary.
5895 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5896 (CHARACTER 10) are now reported as errors, rather than propagated
5897 as unknown types. (reported by piso on #lisp)
5898 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5899 with values NIL and :ERROR. (thanks to Milan Zamazal)
5900 * fixed bug 191c: CLOS now does proper keyword argument checking as
5901 described in CLHS 7.6.5 and 7.6.5.1.
5902 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5903 longer raise an error; further, using a list as a for-as-arithmetic
5904 counter now raises a meaningful error.
5905 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5906 now understood by sequence creation functions such as MAKE-SEQUENCE
5908 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5909 a STRING-INPUT-STREAM.
5910 * compiler enhancement: SIGNUM is now better able to derive the type
5912 * type declarations inside WITH-SLOTS are checked. (reported by
5914 * fixed some bugs revealed by Paul Dietz' test suite:
5915 ** incorrect optimization of TRUNCATE for a positive first
5916 argument and negative second.
5917 ** compiler failure in let-convertion during flushing dead code.
5918 ** compiler failure while deriving type of TRUNCATE on an
5919 interval, containing 0.
5920 ** ASH of a negative bignum by a negative bignum count now returns
5922 ** intersection of CONS types now canonicalizes properly, fixing
5923 inconsistencies in SUBTYPEP.
5925 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5926 * incompatible change: The --disable-debugger command line
5927 option now clobbers the debugger at a more fundamental
5928 level, by redefining #'INVOKE-DEBUGGER instead of by
5929 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5930 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5931 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5932 enter the debugger REPL and then suffer recursive errors
5933 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5934 while under the new system, BREAK in --disable-debugger mode
5935 terminates the system just as an unhandled error would.
5936 * fixed compiler performance when processing loops with a step >1;
5937 * bug fix: DOCUMENTATION now retrieves generic function
5938 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5939 support has been systematized, and now supports the methods
5940 specified by ANSI, along with a default method and a method for
5941 slot documentation. (reported by Nathan Froyd)
5942 * bug fix: effective methods associated with a generic function are
5943 no longer cached over a change of that generic function's method
5944 combination. (reported by Andreas Fuchs)
5945 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5946 names a non-existent directory. (thanks to Andreas Fuchs)
5947 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5948 the PPC platform, lead to stack corruption; this has been fixed.
5949 (reported by Rainer Joswig)
5950 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5951 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5952 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5953 arithmetic in general, is now much more reliable on the PPC
5955 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5956 platform now returns the right answer.
5957 * optimization: restored some effective method precomputation in
5958 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5959 precomputation is now tunable.
5960 * optimization: compiler-internal data structure use has been
5961 reviewed, and changes have been made that should improve the
5962 performance of the compiler by about 20%.
5963 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5964 simple-base-strings and simple-bit-vectors is improved.
5965 * optimization: the optimization of 32-bit logical and arithmetic
5966 functions introduced in version 0.8.3 on the x86 has been
5967 implemented on the mips, ppc and sparc platforms; an
5968 implementation of the same facility, but for 64-bit arithmetic,
5969 has been added for the alpha.
5970 * microoptimization: the compiler is better able to make use of the
5971 x86 LEA instruction for multiplication by constants.
5972 * bug fix: in some situations compiler did not report usage of
5973 generic arithmetic in (SPEED 3) policy.
5974 * bug 145b fix: compiler used wrong type specifier while converting
5975 MEMBER-types to numeric.
5976 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5978 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5979 index argument now works properly on the Alpha platform.
5980 * bug fix: floating point exception treatment on the Alpha platform
5982 * bug fix: FILE-POSITION works much better on string input and
5983 output streams. (thanks to Nikodemus Siivola)
5984 * bug fix: many threading/garbage collection symptoms sorted.
5985 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5986 might be pseudo-atomic.
5987 * internal change: Stopping for GC is now done with signals not
5988 ptrace. GC is now done in whichever thread wanted it, instead of
5990 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5992 * bug fix: result form in DO is not contained in the implicit
5994 * incompatible change: ICR structure is changed; the value part of
5995 CONTINUATION is now called LVAR; corresponding functions are
5996 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5997 * added type deriver for ISQRT (thanks to Robert E. Brown).
5998 * bug fix: better support for loading from the command line when an
5999 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
6001 * fixed some bugs revealed by Paul Dietz' test suite:
6002 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
6003 ** ROUND and FROUND now give the right answer when given very
6004 small float arguments.
6005 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
6007 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
6008 ** (GCD 0 <negative-integer>) returned <negative-integer>.
6009 ** LCM should return a non-negative integer.
6010 ** PARSE-INTEGER returned the index of a terminator instead of the
6011 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
6012 ** PARSE-INTEGER returned an incorrect index being applied to a
6014 ** LCM with two arguments of 0 returns 0 rather than signalling
6016 ** unsigned addition of a 32-bit constant with the high bit set no
6017 longer causes an internal compiler error on the x86.
6018 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
6019 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
6020 with negative last argument.
6021 ** byte specifiers with zero size and position no longer cause
6022 an error during type derivation.
6023 ** bignum multiplication on the Alpha platform now returns the
6025 * porting: The system now builds on SuSE AMD64, although it still
6026 generates a 32-bit binary.
6027 * .fasl file incompatibility: The fasl file version number has
6028 been incremented (because of the changes to internal compiler
6029 data structures referred to above).
6031 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
6032 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
6033 more accurately, on the Darwin kernel running on PowerPC hardware.
6034 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
6035 * Compiler code deletion notes now signal a condition of type
6036 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
6037 an associated MUFFLE-WARNING restart.
6038 * The compiler now performs limited argument count validation of
6039 constant format strings in FORMAT, and where appropriate in ERROR,
6040 CERROR and WARN. (thanks to Gerd Moellmann)
6041 * New ASDF-INSTALL contrib can be used for automatic download and
6042 installation of third-party Lisp code from CCLAN or other sites
6044 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
6045 which forces another thread to execute a function supplied by the
6047 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
6048 now accept and act upon their :ELEMENT-TYPE keyword argument.
6049 (reported by Martin Atzmueller, Edi Weitz)
6050 * bug fix: FILE-POSITION now accepts position designators up to
6051 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
6052 is the greater. (thanks to Patrik Nordebo)
6053 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
6054 Kalle Olavi Niemitalo)
6055 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
6056 printable. (reported by Eric Marsden)
6057 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
6058 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
6059 * x86 bug fix in control stack exhaustion checking: now shows backtrace
6060 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
6061 (thanks to Stig Sandoe)
6062 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
6063 UNREAD-CHAR now correctly includes the unread character in the
6064 target sequence. (thanks to Gerd Moellmann)
6065 * bug fix in threaded builds: the system can now be suspended and
6066 resumed by shell job control with minimal disruption.
6067 * bug fixes in times and timezones >2038AD
6068 * better handling of "where is GNU make?" problem in build scripts
6069 (thanks to Nikodemus Siivola)
6070 * new optimization: inside a named function any reference to a
6071 function with the same name is considered to be a self-reference;
6072 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
6073 optimization quality.
6074 * new optimization on x86: logical functions and + now have
6075 optimized (UNSIGNED-BYTE 32) versions, which are automatically
6076 used when the result is truncated to 32 bits.
6077 * VALUES declaration is partially enabled.
6078 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
6079 * fixed some bugs revealed by Paul Dietz' test suite:
6080 ** The system now obeys the constraint imposed by
6081 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
6082 types form a lattice under type intersection.
6083 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
6084 ** ASSOC now ignores NIL elements in an alist.
6085 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
6086 and (1+ MOST-POSITIVE-FIXNUM) answers.
6087 ** The addition of a method with invalid qualifiers to a generic
6088 function does not cause an error to be signalled immediately;
6089 a warning is signalled, and the error is generated only on
6090 calling the generic function.
6091 * changed .fasl file version number, in part to add type codes for
6092 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
6093 obscure ANSI requirements
6095 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
6096 * fixed bug 148: failure to inline-expand a local function left
6097 garbage, confusing the compiler.
6098 * fixed bugs 3cd: structure slot readers perform type check if the
6099 slot can have an invalid value (i.e. it is either not initialized
6100 or can be written with a less specific slot writer).
6101 * bug fix: the compiler now traps array references to elements off
6102 the end of an array; previously, the bounds checking in some
6103 circumstances could go off-by-one.
6104 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
6106 * type declarations for array element types now obey the description
6107 on the CLHS page "Declaration TYPE", as per discussions on
6108 sbcl-help around 2003-05-08. This means that a declaration
6109 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
6110 declaration, all references to BAR will be asserted or assumed
6111 (with THE, so dependent on compiler policy) to involve objects of
6112 type FOO. Note that no such declaration is implied in
6113 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
6114 * declared types of functions from the "Conditions"
6115 chapter. (reported by Paul Dietz)
6116 * bug fix: CERROR accepts a function as its first argument.
6117 * bug fix: NTH an NTHCDR accept a bignum as index
6118 arguments. (reported by Adam Warner)
6119 * optimization: character compare routines now optimize comparing
6120 against a constant character. (reported by Gilbert Baumann)
6121 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
6122 argument now works properly on the MIPS platform.
6123 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
6124 * repeated evaluation of the same DEFSTRUCT, a slot of which is
6125 declared to have a functional type, does not cause an error
6127 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
6128 many :DEFAULT-INITARGS. (reported by Istvan Marko)
6129 * fixed bug: if last continuation of a deleted block has a
6130 destination, this destination should be deleted too. (reported by
6132 * fixed a bug in the bootstrap process: the host compiler's values
6133 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
6134 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
6135 test case from Patrik Nordebo)
6136 * improved the ability of the disassembler on the PPC platform to
6137 provide helpful disassembly notes.
6138 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
6139 the class in more cases than previously.
6140 * bug fix: FILE-POSITION now understands :START and :END for
6141 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
6142 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
6143 8) data. (thanks to David Lichteblau)
6144 * bug fix: it is possible to add a method to a generic function
6145 without lambda list.
6146 * bug fix: reader failed to signal END-OF-FILE inside an
6147 object representation. (reported by Nikodemus Siivola)
6148 * fixed some bugs revealed by Paul Dietz' test suite:
6149 ** LAST and [N]BUTLAST should accept a bignum.
6150 ** condition slot accessors are methods.
6151 ** (VECTOR NIL) is a subtype of STRING.
6153 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
6154 * minor incompatible change: some nonsensical specialized lambda
6155 lists (used in DEFMETHOD) which were previously ignored now signal
6157 * minor incompatible change: the system is now aware of the types of
6158 variables in the COMMON-LISP package, and will signal errors for
6159 most violations of these type constraints (where previously they
6160 were silently accepted).
6161 * minor incompatible change: COMPILE-FILE now uses the freedom
6162 afforded (ANSI 3.2.2.3) to use derived function types for
6163 functions defined in the same file. This also permits the system
6164 to warn on static type mismatches and function
6165 redefinition. (Currently it does not work with high DEBUG level.)
6166 * minor incompatible change: VALUES declaration is disabled.
6167 * When issuing notes, the compiler now signals a condition of type
6168 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
6169 restart for use in user handlers. It is expected that the
6170 COMPILER-NOTE condition will eventually become a condition
6171 supertype to a hierarchy of note types, which will then be
6172 handleable in a similar fashion. However, at the moment, no such
6173 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
6174 but it's an implementation detail, not a classification for the
6176 * Changes in type checking closed the following bugs:
6177 ** type checking of unused values (192b, 194d, 203);
6178 ** template selection based on unsafe type assertions (192c, 236);
6179 ** type checking in branches (194bc).
6180 * A short form of VALUES type specifier has ANSI meaning (it has
6181 increased the number of situations when SBCL cannot perform type
6183 * fixed bug in DEFSTRUCT: once again, naming structure slots with
6184 keywords or constants is permissible.
6185 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
6186 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
6187 classes. (thanks to Antonio Martinez)
6188 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
6189 outputs FRESH-LINE or TERPRI, and no longer converts its stream
6190 argument to a pretty-print stream. Instead, it leaves any such
6191 operations to DESCRIBE-OBJECT methods.
6192 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
6194 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
6195 lambda lists. (thanks to David Lichteblau)
6196 * bug fix: Defining a generic function with a :METHOD-CLASS being a
6197 subclass of STANDARD-METHOD no longer causes stack exhaustion.
6198 (thanks to Gerd Moellmann)
6199 * fixed bug 246: increased compilation speed of long
6200 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
6202 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
6204 * DEFCONSTANT now throws a condition of type
6205 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
6206 constant to a non-EQL value; CONTINUE and ABORT restarts
6207 respectively change and preserve the value.
6208 * fixed bug 63: The code walker, part of the implementation of CLOS,
6209 is now better at handling symbol macros.
6210 * bug fix: There is no longer an internal implementation type named
6211 CL:LENGTH. (reported by Raymond Toy)
6212 * bug fix: In macro-like defining macros/special operators the
6213 implicit block does not enclose the lambda list.
6214 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
6215 enclosed in parentheses) are not suitable as type specifiers, and
6216 their use properly signals an error now.
6217 * bug fix: An argument count mismatch for a type specifier in code
6218 being compiled no longer causes an unhandled error at compile
6219 time, but signals a compile-time warning.
6220 * fixed simple vector readable printing
6221 * bug fix: DESCRIBE takes more care over whether the class
6222 precedence list slot of a class is bound before accessing it.
6223 (reported by Markus Krummenacker)
6224 * bug fix: FORMATTER can successfully compile pretty-printer format
6225 strings which use variants of the ~* directive inside.
6226 * bug fix: SEARCH now applies its TEST predicate to the elements of
6227 the arguments in the correct order. (thanks to Wolfhard Buss)
6228 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
6229 in type inference. (thanks to Robert E. Brown)
6230 * bug fix: Reading in symbols with an explicit package name of ""
6231 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
6232 * fixed some bugs revealed by Paul Dietz' test suite:
6233 ** NIL is now allowed as a structure slot name.
6234 ** Arbitrary numbers, not just REALs, are allowed in certain
6235 circumstances in LOOP for-as-arithmetic clauses.
6236 ** Multiple class redefinitions before slot access no longer
6237 causes a type error.
6238 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
6239 association between the name and a class.
6240 ** Generic functions with non-standard method-combination and over
6241 five methods all of which return constants no longer return NIL
6242 after the first few invocations. (thanks to Gerd Moellmann)
6243 ** CALL-NEXT-METHOD with no arguments now passes the original
6244 values of the arguments, even in the presence of assignment.
6245 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
6247 ** DISASSEMBLE works with closures and funcallable instances.
6248 ** ADD-METHOD now returns the generic function, not the new method.
6249 ** FIND-METHOD signals an error if the lengths of the specializers
6250 is incompatible with the generic function, even if the ERRORP
6252 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
6253 which its argument is a member.
6254 ** DEFCLASS only redefines the class named by its class-name
6255 argument if that name is the proper name of the class;
6256 otherwise, it creates a new class.
6257 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
6258 of the UNBOUND-SLOT condition to the name of the slot.
6259 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
6260 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
6261 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
6262 SLOT-MAKUNBOUND in the specified fashion.
6264 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
6265 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
6266 cross-compilation host. As a consequence, we can now bootstrap our
6267 way up to SBCL starting with a bare gcc toolchain and human-readable
6268 source code (first the source to CLISP, then the source to SBCL).
6269 * A contributed module containing a partial implementation of the
6270 simple-streams interface has been included. (thanks to Rudi
6272 * A contributed module implementing the RFC1321 Message Digest
6273 Algorithm, known as MD5, has been included.
6274 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
6275 no longer has any effect, as the code controlled by this feature
6276 has been deleted. (As far as we know, no-one has ever built using
6277 this feature, and its semantics were confused in any case).
6278 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
6279 work on conditions (as required by the ANSI specification),
6280 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
6281 expected behaviour on conditions. Users should note, however,
6282 that such behaviour is not required by the ANSI specification,
6283 and so use of this behaviour may render their code unportable.
6284 * fixed some bugs revealed by Paul Dietz' test suite:
6285 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
6287 ** &ENVIRONMENT parameter in macro lambda list is bound first.
6288 ** SXHASH on condition objects no longer returns NIL.
6289 ** :ALLOCATION :CLASS slots are better treated; their values are
6290 updated on class redefinition, and initforms inherited from
6291 superclasses are applied.
6292 ** REMOVE-METHOD returns its generic function argument even when
6293 no method was removed.
6294 ** SHARED-INITIALIZE now initializes the values of the requested
6295 slots, including those with :ALLOCATION :CLASS.
6296 ** ALLOCATE-INSTANCE now works on structure classes defined via
6297 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
6299 ** SLOT-EXISTS-P now works on conditions, as well as structures
6301 ** MAKE-LOAD-FORM now has the required methods on
6302 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
6303 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
6304 keyword, and now implements the SLOT-NAMES argument.
6305 ** methods with &OPTIONAL arguments no longer allow too many
6306 arguments to be passed in the call without error.
6307 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
6308 option is consistent with the required arguments of the generic
6309 function lambda list.
6310 * bug fix: REQUIRE accepts a string designator. (Thanks to
6312 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
6313 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
6314 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
6315 * bug fix: The compiler now checks for duplicated variables in macro
6317 * bug fix: SETQ on globals returns the correct value.
6318 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
6319 not a COMPILER-ERROR (followed by some other strange error on
6320 choosing the CONTINUE restart).
6321 * bug fix: make.sh and friends are now more consistent in the way that
6322 they look for GNU "make".
6324 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
6325 * experimental native threads support (on x86 Linux >=2.4 only).
6326 This is not compiled in by default: you need to add :SB-THREAD to
6327 the target features. See the "Beyond ANSI" chapter of the manual
6329 * fix for longstanding nonANSIism: The old distinction between
6330 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
6331 The return value from CL:FIND-CLASS is now a CLOS class, and
6332 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
6333 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
6334 * An interface to the MetaObject Protocol, as described in Kiczales,
6335 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
6336 MIT Press, 1991, is available from the SB-MOP package.
6337 * incompatible change: the SB-PCL package should now be considered
6338 a private implementation detail, and no longer a semi-private MOP
6340 * minor incompatible change: due to rearrangement for threads, the
6341 control stack and binding stack are now allocated at arbitrary
6342 addresses instead of being hardcoded per-port. Users affected by
6343 this probably have to be doing advanced things with shared
6344 libraries, and will know who they are.
6345 * minor incompatible change: Previously, all --eval forms used were
6346 processed with READ before any of them were processed with EVAL.
6347 Now each --eval form is processed with both READ and EVAL before
6348 the next --eval form is processed. (Thus package operations like
6349 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
6350 work as the user might reasonably expect.)
6351 * minor incompatible change: *STANDARD-INPUT* is now only an
6352 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
6354 * minor incompatible change: Y-OR-N-P is now character-oriented,
6355 not line oriented. Also, YES-OR-NO-P now works without errors.
6356 (thanks to Antonio Martinez)
6357 * sb-aclrepl module improvements: an integrated inspector, added
6358 repl features, and a bug fix to :trace command.
6359 * Known functions, which cannot be open coded by the backend, are
6360 considered to be able to check types of their arguments. (fixing
6361 a bug report by Nathan J. Froyd)
6362 * fixed a bug in computing method discriminating functions: It is
6363 now possible to define methods specialized on classes which have
6364 forward-referenced superclasses. (thanks to Gerd Moellmann)
6365 * fixed evaluation order in optional entries (reported by Gilbert
6367 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
6368 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
6369 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
6370 required-by-AMOP NAME argument, as well as CLASS and
6371 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
6372 * fixed bug 20: DEFMETHOD can define methods using names that are
6373 not the proper names of classes to designate class specializers.
6374 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
6375 Unix file descriptors, instead of blowing up. (thanks to Antonio
6377 * Garbage collection refactoring: user-visible change is that a
6378 call to the GC function during WITHOUT-GCING will not do garbage
6379 collection until the end of the WITHOUT-GCING. If you were doing
6380 this you were probably losing anyway.
6381 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
6382 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
6383 TYPEP the latter but not the former.
6384 * The compiler issues a full WARNING for calls to undefined functions
6385 with names from the CL package.
6386 * MAP-INTO for a vector destination is open coded. (reported by
6387 Brian Downing on c.l.l)
6388 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
6389 documentation string.
6390 * fixed some bugs revealed by Paul Dietz' test suite:
6391 ** COPY-ALIST now signals an error if its argument is a dotted
6393 ** Condition slots are now accessed more correctly in the presence
6394 of multiple initargs for a given slot.
6395 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
6396 exclude restarts of the same name associated with a different
6398 ** DEFCLASS of forward-referenced classes with another
6399 forward-referenced class in the superclasses list no longer
6401 ** Condition slots are now initialized once each, not multiple
6402 times. (thanks to Gerd Moellmann)
6403 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
6405 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
6406 ** NSET-EXCLUSIVE-OR does not return extra elements when its
6407 arguments contain duplicated elements.
6408 ** RESTART-CASE understands local macros.
6409 ** RESTART-CASE associates exactly its own restarts with a condition.
6410 ** ENDP in safe mode checks its argument to be of type LIST.
6411 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
6412 in question is unbound.
6413 ** Optimized MAKE-INSTANCE functions no longer cause internal
6414 assertion failures in the presence of duplicate initargs.
6415 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
6416 ** Side-effectful :DEFAULT-INITARGS have their side-effects
6417 propagated even in the ctor optimized implementation of
6419 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
6421 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
6422 * a better implementation of SXHASH on (simple) bit vectors,
6423 measured both in execution speed and in distribution of results
6424 over the positive fixnums, has been installed. Likewise, a better
6425 implementation of EQUAL for simple bit vectors is now available.
6426 * fixed CEILING optimization for a divisor of form 2^k.
6427 * fixed bug 240 (emitting extra style warnings "using the lexical
6428 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
6429 by Antonio Martinez)
6430 * fixed SXHASH, giving different results for NIL depending on type
6431 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
6432 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
6433 variable. (found by Rolf Wester)
6434 * SBCL does not ignore type declarations for special
6435 variables. (reported by rif on c.l.l 2003-03-05)
6436 * some bug fixes in contrib/sb-aclrepl/
6437 * fixed some bugs revealed by Paul Dietz' test suite:
6438 ** a bug in the CONS type specifier, whereby the CAR and CDR
6439 types got intertwined, has been fixed;
6440 ** the type system is now able to reason about the interaction
6441 between INTEGER and RATIO types more completely;
6442 ** APPEND, [N]REVERSE and NRECONC check that those their
6443 arguments, which must be proper lists, are really so;
6444 ** An array specialized to be unable to hold elements has been
6445 implemented, as required -- yes, really -- by ANSI;
6446 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
6447 on malformed property lists;
6449 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
6450 * incompatible packaging change: in line with Unix convention,
6451 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
6452 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
6453 * REQUIRE and PROVIDE are now optionally capable of doing something
6454 useful. See the documentation string for REQUIRE.
6455 * infrastructure for a managed SBCL contrib system: contributed
6456 modules in this release include:
6457 ** the ASDF system definition facility;
6458 ** an interface to the BSD Sockets API;
6459 ** an ACL-like convenience interface to the repl;
6460 (thanks to Kevin Rosenberg)
6461 ** an implementation of ROTATE-BYTE, with efficient implementation
6463 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
6464 gives a closer approximation to the right answer than previously.
6465 (thanks to Raymond Toy)
6466 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
6467 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
6468 optional environment arguments, as required by ANSI.
6469 * fixed bugs in other functions taking environment objects, allowing
6470 calls with an explicit NIL environment argument to be compiled
6472 * fixed bug 228: primary return values from
6473 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
6474 COMPILE or FUNCTION.
6475 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
6476 :TYPE will no longer signal errors on innocuous objects.
6477 * fixed bug 231b: SETQ is better at respecting type declarations in
6478 the lexical environment.
6479 * fixed a bug in DEFCLASS: classes named by symbols with no or
6480 unprintable packages can now be defined.
6481 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
6482 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
6483 * fixed compiler failure related to checking types of functions.
6484 (reported by Robert E. Brown)
6485 * the compiler is now much more consistent in its error-checking
6486 treatment of bounding index arguments to sequence functions: in
6487 (SAFETY 3) code, errors will be signalled in almost all cases if
6488 invalid sequence bounding indices are passed to functions defined
6489 by ANSI to operate on sequences.
6490 * fixed a bug in the build procedure: documentation of SBCL-specific
6491 packages is now preserved and available in the final Lisp image.
6492 * lifted FDEFINITION lookup out of loops in the implementation of
6493 many list operations. (thanks to Robert E. Brown)
6494 * fixed a bug in the reader: the #n# reader macro now works for
6495 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
6496 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
6497 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
6498 E. Brown and Tony Martinez respectively)
6499 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
6500 SLOT-BOUNDP: in particular, it is now able to optimize them much
6501 better, and is now not vulnerable to having packages renamed.
6502 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
6503 always called when a slot is not present in an instance. (thanks
6505 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
6506 longer signal an error on unreading a character following EOF on
6507 the previous constituent stream. (thanks to Tony Martinez)
6508 * fixed some bugs revealed by Paul Dietz' test suite:
6509 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
6510 not just nonnegative fixnums;
6511 ** the logical bit-array operators such as BIT-AND now accept an
6512 explicit NIL for their "opt-arg" argument (to indicate a
6513 freshly-consed result bit-array);
6514 ** ELT now signals an error on an invalid sequence index in safe
6516 ** the type system is now cleverer about negations of numeric
6517 types, and consequently understands the BIGNUM and RATIO types
6519 ** the type system is now cleverer about the interaction between
6520 INTEGER and RATIO types: while bugs still remain, many more
6521 cases are accurately computed;
6522 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
6523 if it is in the last clause;
6524 ** CONSTANTLY now correctly returns a side-effect-free function in
6526 ** DECLARE is no longer treated as a special-operator; in
6527 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
6528 * incremented fasl file version number due to the change in the
6529 DEFSTRUCT-SLOT-DESCRIPTION structure.
6531 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
6532 * minor incompatible change: code processed by the "interpreter" or
6533 EVAL now has a compilation optimization policy of (DEBUG 2)
6534 (changed from (DEBUG 1)) to improve debuggability of interactive
6535 development, and to allow the use of the debug RETURN command in
6537 * an experimental implementation of the RETURN command for the
6538 debugger has been included. (thanks to Frederik Kuivinen)
6539 * fixed bug 62: constraints were not propagated into a loop.
6540 * fixed bug in embedded calls of SORT (reported and investigated by
6542 * fixed some bugs revealed by Paul Dietz' test suite:
6543 ** printing and reading of arrays with some dimensions having
6544 length 0 (thanks to Gerd Moellmann);
6545 ** BOA constructor with &AUX argument without a default value does
6546 not cause a type error;
6547 ** CONSTANTP now returns true for all self-evaluating objects.
6549 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
6550 * fixed bug 127: DEFSTRUCT now does not clobber old structure
6551 accessors that are related by inheritance, as specified in the
6552 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
6553 Valtteri Vuorikoski)
6554 * The compiler is now able to inline functions that were defined in
6555 a complex lexical environment (e.g. inside a MACROLET).
6556 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
6558 * Support for the upcoming FreeBSD-5.0 release has been included.
6559 (thanks to Dag-Erling Smorgrav)
6560 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
6561 effect when it is not in a toplevel context.
6562 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
6563 stand a better chance of being correct. (thanks to Gerd
6565 * fixed bug in COERCE, which now signals an error on coercing a
6566 rational to a bounded real type which excludes the expected
6568 * The compiler is now able to derive types more accurately from the
6569 COERCE and COMPILE functions.
6570 * fixed bug 223: functional binding is considered to be constant
6571 only for symbols in the CL package.
6572 * fixed bug 231: SETQ did not check the type of a variable being set
6573 (reported by Robert E. Brown)
6574 * A new optimization for MAKE-INSTANCE has been included, fixing
6575 various bugs (including relating to :ALLOCATION :CLASS slots and
6576 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
6578 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
6579 ** As required by ANSI, LOOP now disallows anonymous collection
6580 clauses such as COLLECT I in conjunction with aggregate boolean
6581 clauses such as THEREIS (= I 1);
6582 ** LOOP now signals an error when any variable is reused in the
6583 same loop (including the potentially useful construct analogous
6584 to WITH A = 1 WITH A = (1+ A);
6585 ** IT is only a special loop symbol within the first clause of a
6586 conditional loop clause;
6587 ** LOOP with a typed iteration variable over a hashtable now
6588 signals a type error iff it should.
6589 * fixed some other bugs revealed by Paul Dietz' test suite:
6590 ** FILE-STREAM now names the class previously known as FD-STREAM;
6591 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
6592 argument) no longer signals an error;
6593 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
6594 of the slot symbol, rather than using the current package
6595 ((:CONC-NAME "") continues to intern the slot's name in the
6597 * incremented fasl file version number, because of the incompatible
6598 change to the DEFSTRUCT-DESCRIPTION structure, and again because
6599 of the new implementation of DEFINE-COMPILER-MACRO.
6601 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
6602 * Support for building SBCL for MIPS platforms running in
6603 little-endian mode has now been checked in, and basic
6604 functionality on said platforms verified.
6605 * minor incompatible change: PCL now records the pathname of a file
6606 in which methods and the like are defined, rather than its
6608 * minor incompatible change: TRUENAME now considers the truename of
6609 a file naming a directory to be the pathname with :DIRECTORY
6610 component indicating that directory.
6611 * minor incompatible change: a NAMED clause in the extended form of
6612 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
6613 reason for the previous behaviour is unclear.
6614 * more systematization and improvement of CLOS and MOP conformance
6615 in PCL (thanks to Gerd Moellman and Pierre Mai):
6616 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
6618 ** DEFINE-METHOD-COMBINATION no longer signals an error for
6619 primary methods with no specializers;
6620 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
6622 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
6623 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
6624 FORWARD-REFERENCED-CLASSes; error reporting on
6625 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
6627 ** SXHASH on CLOS instances now uses a slot internal to the
6628 instance to return different numbers on distinct instances,
6629 while preserving the same return value through invocations of
6631 ** DEFMETHOD signals errors when methods with longer incongruent
6632 lambda lists are added to generic functions;
6633 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
6634 CLASS, as specified in AMOP;
6635 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
6636 on the order returned by the primary method for classes of
6637 class STANDARD-CLASS;
6638 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
6639 * fixed some bugs shown by Paul Dietz' test suite:
6640 ** DOLIST puts its body in TAGBODY;
6641 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
6643 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
6644 value producing form;
6645 ** if more variables are given to PROGV than values, extra
6646 variables are bound and made to have no value;
6647 ** NSUBSTITUTE on list arguments gets the right answer with
6649 ** ELT signals an error of type TYPE-ERROR when the index argument
6650 is not a valid sequence index;
6651 ** LOOP signals (at macroexpansion time) an error of type
6652 PROGRAM-ERROR when duplicate variable names are found;
6653 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
6654 ** FUNCALL of special-operators now cause an error of type
6656 ** PSETQ now works as required in the presence of side-effecting
6657 symbol-macro places;
6658 ** NCONC accepts any object as its last argument;
6659 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
6661 ** loop-for-as-package does not require a package to be explicitely
6663 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
6665 * fixed bug 166: compiler preserves "there is a way to go"
6666 invariant when deleting code.
6667 * fixed bug 172: macro lambda lists with required arguments after
6668 &REST arguments now cause an error to be signalled. (thanks to
6670 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
6671 bug. (thanks to Matthew Danish)
6672 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
6674 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
6675 arguments are lexically rebound. (thanks to Gerd Moellmann and
6677 * fixed bug 194: error messages are now more informative when there
6678 is no primary method applicable in a call to a generic
6679 function. (thanks to Gerd Moellmann)
6680 * fixed bug in command line argument checking (thanks to Julian
6682 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
6683 (thanks to Matthew Danish)
6684 * incremented fasl file version number, because of the
6685 SXHASH-related changes in the layout of CLOS data structures
6687 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
6688 * minor incompatible change: The runtime (the Unix executable named
6689 "sbcl") is now much pickier about the .core files it will load.
6690 Essentially it now requires .core files to descend from the same
6691 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
6692 as the runtime does. (The intent is to prevent the crashes which
6693 can occur, and which can even be reported as mysterious failures,
6694 when people patch the sources or change the build parameters
6695 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
6696 sbcl and .core files.)
6697 * fixed bug: VALUES-LIST is no longer optimized away.
6698 * fixed bug 142: The FFI conversion of C string values to Lisp
6699 string values no longer conses excessively. (thanks to Nathan
6700 Froyd porting Raymond Toy's fix to CMU CL)
6701 * began to systematize and improve MOP conformance in PCL (thanks to
6702 Nathan Froyd, Gerd Moellman and Pierre Mai):
6703 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
6705 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
6706 ** FINALIZE-INHERITANCE is now called on class finalization;
6707 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
6708 argument precedence order.
6709 * fixed bug 202: The compiler no longer fails on functions whose
6710 derived types contradict their declared type.
6711 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
6712 so it can be non-toplevel.
6713 * The fasl file version number has changed (because of the new
6714 implementation of DEFMACRO).
6715 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
6716 safe code, that any length requirement by their type-specifier
6717 argument is valid. The exceptions to this are described in bug
6719 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
6720 functions now check the types of their inputs as required by ANSI.
6721 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
6722 introduced symbol is DECLAREd to be SPECIAL.
6723 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
6724 * fixed bug: :COUNT argument to sequence functions may be negative
6725 * fixed bug: body of DO-SYMBOLS may contain declarations
6726 * fixed bug: PUSHNEW now evaluates its arguments from left to right
6727 (reported by Paul F. Dietz, fixed by Gerd Moellman)
6728 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
6729 symbol macro only once
6730 * fixed printing of call frame when argument list is unavailable
6731 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
6732 * compiler no longer signals WARNING on unknown keyword
6735 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
6736 * A beta-quality port to the mips architecture running Linux,
6737 based on the old CMUCL backend, has been made. It has been tested
6738 on a big-endian kernel, and works sufficiently well to be able to
6739 rebuild itself; it has not been tested in little-endian mode.
6740 * fixed an inconsistency between gencgc.c and purify.c which made
6741 dumping/loading .core files unreliable
6742 * fixed bug 120a: The compiler now deals correctly with IFs where
6743 the consequent is the same as the alternative, instead of
6744 misderiving the return type. (thanks to Alexey Dejneka)
6745 * fixed bug 113: Logical pathnames are now dumpable (the logical
6746 host is resolved at load-time, throwing an error if it is not
6748 * fixed bug 174: FORMAT's error message is slightly clearer when a
6749 non-printing character is used in a format directive.
6750 * fixed several bugs in compiler checking of type declarations, i.e.
6751 violations of the Python "declarations are assertions" principle
6752 (thanks to Alexey Dejneka)
6753 * fixed several bugs in PCL's error checking (thanks to Gerd
6755 * fixed bug: printing of FILE-ERROR (thanks to Antonio
6757 * fixed bug in compilation of functions as first class values
6758 (thanks to Antonio Martinez-Shotton)
6759 * The compiler's handling TYPE-ERRORs which it can prove will
6760 inevitably happen at runtime has been cleaned up and corrected
6761 in several ways. (thanks to Alexey Dejneka)
6762 * improved argument type checking for various basic arithmetic
6763 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6764 lavished on them in the past that they can be compiled in many
6765 ways in different special cases
6766 * fixed bug 181: compiler checks validity of user supplied type
6768 * cleaned up code flushing in optimization: Function calls which
6769 should signal errors for safety purposes (e.g. which ANSI says
6770 should signal errors when their arguments are of incorrect type)
6771 are no longer optimized away.
6772 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6773 * incremented fasl file version number, because changes in the
6774 implementation of sequence functions like COERCE caused
6775 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6776 in old inline expansions) to become undefined. (Actually these
6777 changes were later undone, so we might very well be binary
6778 compatible with 0.7.7 after all, but leaving the version number
6779 incremented seemed like the simplest and most conservative
6782 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6783 * An alpha-quality port to the parisc architecture running Linux,
6784 based on the old CMUCL backend, has been made. This, even more so
6785 than the other backends, should be considered still a work in
6786 progress; known problems include that the Linux kernel in 64-bit
6787 mode does not propagate the correct sigcontext structure to
6788 userspace, and consequently SBCL on a parisc64 kernel will not
6790 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6791 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6792 suppressed.) Also now that the compiler is looking at declarations
6793 in the environment, it checks optimization declarations as well,
6794 and suppresses inlining when (> DEBUG SPEED).
6795 * More fixes have been made to treatment of floating point exception
6796 treatment and other Unix signals. In particular, floating point
6797 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6798 * The detection and handling of control stack exhaustion (infinite
6799 or very deeply nested recursion) has changed. Stack exhaustion
6800 detection is now done by write-protecting pages at the OS level
6801 and applies at all optimization settings; when found, a
6802 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6803 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6804 be caught using IGNORE-ERRORS.
6805 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6806 correctly when transforming recursive LABELS functions to LETs.
6807 (thanks to Alexey Dejneka)
6808 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6809 that are names of constants or global variables.
6810 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6811 alien routines with docstrings.
6812 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6813 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6815 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6816 (thanks to Eric Marsden)
6817 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6818 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6819 * Bug fix: The SPARC backend can now compile functions involving
6820 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6821 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6822 to a functions expecting a PATHNAME-DESIGNATOR.
6823 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6824 lambda lists. (thanks to Alexey Dejneka)
6825 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6826 functions so that EXPORTing the name of the class doesn't cause
6827 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6828 to Antonio Martinez for reporting this)
6829 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6830 constant-folded without failing an assertion. (thanks to Einar
6831 Floystad Dorum for reporting this)
6832 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6833 types are now dealt with more correctly by the compiler.
6834 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6835 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6836 behaviour analogous to RENAME-FILE. This puts its behaviour more
6837 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6839 * The fasl file version number has changed again. (because of the
6840 bug fix involving the names of PCL MAKE-INSTANCE functions)
6842 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6843 * bug fix: Floating point exceptions are treated much more
6844 consistently on the x86/Linux and PPC/Linux platforms.
6845 * Array initialization with :INITIAL-ELEMENT is now much faster for
6846 cases when the compiler cannot open code the array creation, but
6847 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6848 array accesses have also seen a speed increase.
6849 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6850 specified. (This was at the root of some bad interactions between
6851 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6853 * bug fix: Internal error arguments for undefined functions are now
6854 computed correctly on the PPC/Linux platform.
6855 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6856 Raymond Toy's patch for CMU CL)
6857 * Support for the Solaris 9 operating environment has been included
6858 (thanks to Daniel Merritt)
6859 * A very ugly but hopefully complete draft of the missing FFI chapter
6860 of the manual has been created by reformatting the corresponding
6861 CMU CL manual chapter into (currently very ugly and incoherent)
6862 DocBook and bringing it up to date for SBCL behavior. Thus, the
6863 manual is now essentially complete, at least by my extreme
6864 once-and-only-once standards, whereby it's acceptable to refer to
6865 the doc strings of SB-EXT functions as the primary documentation.
6866 * The fasl file version number has changed again, due to cleanup of
6867 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6868 is no longer a static symbol.)
6870 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6871 * SBCL now builds with OpenMCL (version 0.12) as the
6872 cross-compilation host; also, more progress has been made toward
6873 bootstrapping under CLISP.
6874 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6876 * bug 158 fixed: The compiler can now deal with integer loop
6877 increments different from 1; fixing this turned out also to fix
6879 * bug 169 fixed: no more bogus warnings about using lexical bindings
6880 despite the presence of perfectly good SPECIAL declarations (thanks
6881 to David Lichteblau)
6882 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6883 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6884 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6886 * bug 180 fixed: Method combination specifications no longer ignore
6887 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6888 * bug fix: Structure type predicate functions now check their argument
6889 count as they should.
6890 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6891 correctly. (thanks to Pierre Mai)
6892 * minor incompatible change: The --noprogrammer option is deprecated
6893 in favor of the new --disable-debugger option, which is very similar.
6894 (The major difference is that it takes effect at a slightly different
6895 time at startup, causing handling of errors in --sysinit and
6896 --userinit files will be affected differently.) The
6897 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6898 been added to allow this functionality to be controlled from ordinary
6899 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6900 maintainers, who might want to run non-interactive scripts to
6901 build SBCL cores which will later be used interactively.)
6902 * minor incompatible change: The LOAD function no longer, when given
6903 a wild pathname to load, loads all files matching that pathname.
6904 Instead, an error of type FILE-ERROR is signalled.
6906 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6907 * bug 147 fixed: The compiler preserves its block link/count
6908 invariants more correctly now so that it doesn't crash. (thanks
6910 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6912 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6913 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6914 no-value-for-this-character as NIL (as specified by ANSI).
6915 * HOST-NAMESTRING on physical pathnames now returns a string that is
6916 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6917 (thanks to Christophe Rhodes)
6918 * The Alpha port handles icache flushing more correctly. (thanks to
6920 * More progress has been made toward bootstrapping under CLISP. (thanks
6921 to Christophe Rhodes)
6922 * The fasl file format has changed again, because dynamic loading
6923 on OpenBSD (which has non-ELF object files) motivated some cleanups
6924 in the way that foreign symbols are transformed and passed around.
6925 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6926 is no longer treated as whitespace by the reader, but instead as
6927 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6928 |A
\x7fB|, instead of A as it used to.
6930 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6931 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6932 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6933 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6934 this as of 0.7.1.45, but was left out of the previous news section
6935 (thanks to Dan Barlow)
6936 * SBCL now runs on the Solaris operating system on SPARC architectures
6937 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6938 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6939 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6940 * SPARC backend cleanups, allowing builds of cores optimized for V8
6941 and V9 SPARCS, and also emission of code targeted to a particular
6942 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6944 * SBCL is closer to bootstrapping under CLISP, thanks to various
6945 fixes by Christophe Rhodes.
6946 * The fasl file format has changed again, to allow the compiler's
6947 INFO database to support symbol macros.
6948 * The user manual (in doc/) is formatted into HTML more nicely.
6949 (thanks to coreythomas)
6950 * The system is smarter about SUBTYPEP relationships, especially
6951 those involving NOT types (including types such as ATOM which are
6952 represented internally using NOT types). Thus SUBTYPEP is less
6953 likely to return (VALUES NIL NIL) in general, and in particular
6954 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6956 * The fasl file format has changed again, because the internal
6957 representation of types now includes a new slot to support the new
6958 SUBTYPEP-of-NOT-types logic.
6959 * (not a change in the main branch of SBCL, but a related prototype
6960 which can hopefully be merged into the main branch of SBCL in the
6961 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6962 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6963 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6964 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6965 dispatch macro character combinations. (thanks to Alexey Dejneka)
6966 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6967 that superficially look like logical namestrings correctly.
6968 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6970 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6971 default supplied-p) for &optional and &key arguments. (thanks to
6974 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6975 * incompatible change: The compiler is now less aggressive about
6976 tail call optimization, doing it only when (> SPACE DEBUG) or
6977 (> SPEED DEBUG). (This is an incompatible change because there are
6978 programs which relied on the old CMU-CL-style behavior to optimize
6979 away their unbounded recursion which will now die of stack overflow.)
6980 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6981 for non-GENCGC systems has been increased to 20M (since that
6982 seems much closer to the likely performance optimum for modern
6983 systems than the old 4M value was)
6984 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6985 and *DEBUG-PRINT-LEVEL*
6986 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6987 of CMU CL's support for SPARC, and various endianness and other
6988 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6989 * new syntactic sugar for the Unix command line: --load foo.bar is now
6990 an alternate notation for --eval '(load "foo.bar")'.
6992 ** The system now detects stack overflow and handles it gracefully,
6993 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6994 optimization settings. (This is a good thing in general, and
6995 its introduction in this version should be particularly timely
6996 for anyone whose code fails because of suppression of tail
6998 ** The system now hunts for the C variable "environ" in a more
6999 devious way, to avoid segfaults when the C library version differs
7000 between compile time and run time. (thanks to Christophe Rhodes)
7001 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
7002 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
7003 ** The compiler no longer issues bogus style warnings for undefined
7004 classes in the same source file as the DEFCLASSes which defined
7005 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
7007 ** fixes in CONDITION class precedence list for undefined function
7008 errors (thanks to Alexei Dejneka)
7009 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
7010 correctly. (thanks to Dan Barlow)
7011 ** portability fixes aiming at bootstrapping under CLISP (thanks
7012 to Dave McDonald and Christophe Rhodes)
7013 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
7014 ** fixes in type translation and and type inference (thanks to
7016 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
7017 ** various fixes in the new ports (thanks to Dan Barlow)
7018 * several changes related to debugging:
7019 ** suppression of tail recursion, as noted above
7020 ** stack overflow detection, as noted above
7021 ** The default implementation of TRACE has changed. :ENCAPSULATE T
7022 is now the default. (For some time encapsulation has been more
7023 reliable than the breakpoint-based :ENCAPSULATE NIL
7024 implementation, at least on X86 systems; and I just noticed that
7025 encapsulation also seems closer to the spirit of the ANSI
7028 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
7030 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
7031 up properly again. (There was a packaging bug in 0.7.0 which
7032 left their definitions in SB-SYS::LOAD-FOREIGN and
7033 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
7034 vital for most things which interface to C-level interfaces,
7035 like extensions working with sockets or databases or
7036 Perl-compatible regexes or whatever, and the need to fix
7037 this bug is the main reason that 0.7.1 was released so
7039 ** DEFGENERIC is now choosier about the methods it redefines, so that
7040 reLOADing a previously-LOADed file containing DEFGENERICs does
7041 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
7042 cycle now works as it should. (thanks to Alexey Dejneka)
7043 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
7044 fixed by Christophe Rhodes. (He actually submitted this patch
7045 months ago, and I delayed until after 0.7.0.)
7046 ** Bug 111 (internal compiler confusion about runtime checks on
7047 FUNCTION types) was fixed by Alexey Dejneka.
7048 * Some internal cleanups (getting rid of variables which aren't
7049 needed now that the byte interpreter is gone) caused the fasl
7050 file format number to change again.
7052 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
7053 * major incompatible change: The default fasl file extension, i.e. the
7054 default extension for files produced by COMPILE-FILE, has changed
7055 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
7057 ** There are many changes in the implementation of the compiler.
7058 SBCL is now essentially a compiler-only implementation of ANSI
7059 Common Lisp. EVAL still "interprets" a few special cases, but
7060 almost all the interesting cases are handled by creating
7061 a LAMBDA expression, calling COMPILE on it, then calling
7062 FUNCALL on the result.
7063 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
7064 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
7065 Since the code is newer, there might still be some new bugs
7066 (though not as many as before Martin Atzmueller's fixes:-). But
7067 the new code is substantially simpler and clearer, and hopefully
7068 any remaining bugs will be simpler, less fundamental, and more
7069 fixable then the bugs in the old code.
7070 ** The revised compiler is still a little unsteady on its feet.
7072 *** The debugging information it produces (particularly the names
7073 of FUNCTION objects) is sometimes much less useful than what
7074 the old compiler produced.
7075 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
7076 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
7077 within a MACROLET) has been temporarily weakened.
7078 ** There are new compiler optimizations for various functions:
7079 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
7080 FIND-IF-NOT, POSITION-IF-NOT, and FILL
7081 *** the math functions TRUNCATE, FLOOR, and CEILING
7082 *** the function-of-all-trades COERCE
7083 Mostly these should be transparent, but there's one
7084 potentially-annoying problem (bug 117): when the compiler
7085 inline-expands a function and does type analysis on the result,
7086 it can create control paths which have type mismatches, and
7087 when it can't prove that those control paths aren't taken,
7088 it will issue WARNINGs about the type mismatches. This is
7089 a particular problem in practice for the new sequence functions.
7090 It's not clear how this should be fixed, and for now, a
7091 workaround is given in the entry for 117 in the BUGS file.
7092 ** (Because of the interaction between the two previous items --
7093 occasional inlining problems and new inline expansions -- some
7094 of the new sequence function optimizations won't really kick in
7095 completely until debugging information, and then inlining, are
7096 straightened out in some future version.)
7097 * minor incompatible changes:
7098 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
7099 DIRECTORY no longer implicitly promotes NIL slots of its
7100 pathname argument to :WILD. In particular, when you ask for the
7101 contents of a directory (which you used to be able to do without
7102 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
7103 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
7104 ** changes in behavior that ANSI explicitly defines to be
7105 implementation dependent:
7106 *** The new compiler-only implementation still conforms with ANSI,
7107 but acts a little different than before. Besides the obvious
7108 changes in performance tradeoffs (that the cost per form passed
7109 to EVAL has gone up, and the cost per form executed by EVAL
7110 has gone down), the behavior of the system changes a little
7111 because there are no longer any interpreted function objects.
7112 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
7113 e.g. doing COMPILE on the output of interactive DEFUN is
7115 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
7117 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
7118 has changed from (:CL) to NIL.
7119 *** The CHAR-NAME of unprintable ASCII characters which, unlike
7120 e.g. #\Newline and #\Tab, don't have names specified in the
7121 ANSI Common Lisp standard, is now based on their ASCII symbolic
7122 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
7123 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
7124 are no longer used for output.
7125 ** changes in internal implementation constants:
7126 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
7127 4 million. (If your application spends a lot of time GCing and
7128 you have a lot of RAM, you might want to experiment with
7129 increasing it even more.)
7130 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
7131 However, almost all old code should still continue to work without
7132 immediate update, as SB-C-CALL is now a (deprecated) nickname
7134 ** Old operator names in the style DEF-FOO are now deprecated in
7135 favor of new corresponding names DEFINE-FOO, for consistency with
7136 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
7137 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
7138 internal symbols, but a few supported extensions like
7139 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
7140 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
7141 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
7142 etc. as you get deeper into recursive calls to the debugger
7143 command loop, instead of the old "5]", "5]]", "5]]]"
7144 sequence. (I was motivated to do this when squabbles between
7145 ILISP and SBCL left me very deeply nested in the debugger. In the
7146 short term, this change will probably provoke more ILISP/SBCL
7147 squabbles, but hopefully it will be an improvement in the long run.)
7148 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
7149 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
7150 function, since declaiming return types involving aliens is
7151 (1) annoyingly messy to do by hand and (2) vital to efficient
7152 compilation of code which calls such functions.
7153 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
7154 longer reexported by the SB-EXT package. They're solely useful
7155 for alien code, so it seems more logical that you should get
7156 them from the SB-ALIEN package, not in SB-EXT.
7157 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
7158 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
7159 features. Instead, the code that they used to control is always
7160 built into the system.
7161 * many other bug fixes
7162 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
7163 advantage of the new EVAL-WHEN stuff and to clean them up in
7164 general, and they are now more ANSI-compliant in a number of
7165 ways. Martin Atzmueller is responsible for a lot of this.
7166 ** Besides the cleanups discussed above, Martin Atzmueller fixed
7168 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
7169 *** correct ERROR type for various file operations
7170 *** some fixes for Lisp streams
7171 *** DEFMETHOD syntax checking
7172 *** changing old weird representation of debug information as
7173 strings (which, among their other deficiencies, don't transform
7174 correctly when you rename packages, and don't change their
7175 print representation when you change things like *PACKAGE*
7176 and *PRINT-LENGTH*) to symbols and lists of symbols
7177 He also made several improvements and fixed several bugs in DESCRIBE.
7178 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
7180 *** misbehavior of WRITE-STRING/WRITE-LINE
7181 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
7182 and several other LOOP problems as well
7183 *** DIRECTORY when similar filenames are present
7184 *** DEFGENERIC with :METHOD options
7185 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
7186 *** bug in the optimization of ARRAY-ELEMENT-TYPE
7187 *** argument ordering in FIND with :TEST option
7188 *** mishandled package designator argument in APROPOS-LIST
7189 *** various problems in the backquote readmacro
7190 *** a bug in APROPOS
7191 *** probably some others that I'm not describing very well here,
7192 since the CVS log documents them by reference to sbcl-devel
7193 messages, and the SourceForge archives aren't working well.:-(
7194 ** Dan Barlow improved the Alpha port (and is making progress on the
7195 PPC port, for those of you who think different).
7196 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
7197 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
7198 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
7199 continues to work on the SPARC port (for those of you in a position
7200 to look down upon our little PC-compatible boxes from a great height).
7201 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
7202 and uses that copy, rather than the current dynamic value, when
7203 it's trying to decide whether to truncate output. Thus e.g.
7204 (let ((*print-lines* 50))
7205 (pprint-logical-block (stream nil)
7207 (let ((*print-lines* 8))
7208 (print (aref possiblybigthings i) stream)))))
7209 should now truncate the logical block only at 50 lines, instead of
7210 often truncating it at 8 lines, as it did before.
7211 * The doc/cmucl/ directory, containing old CMU CL documentation
7212 from the time of the fork, is no longer part of the base system.
7213 SourceForge has shut down its anonymous FTP service, and with it
7214 my original plan for distributing the old CMU CL documentation
7215 there. For now, if you need these files you can download an old
7216 SBCL source release and extract them from it.
7217 * The fasl file version number changed again, for dozens of reasons,
7218 some of which are apparent above.
7220 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
7221 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
7222 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
7223 patch, so that DISASSEMBLE output is much nicer.
7224 * The code in the SB-PROFILE package now seems reasonably stable.
7225 I still haven't decided what the final interface should look like
7226 (I'd like PROFILE to interact cleanly with TRACE, since both
7227 facilities use function encapsulation) but if you have a need
7228 for profiling now, you can probably use it successfully with
7229 the current CMU-CL-style interface.
7230 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
7231 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
7232 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
7233 link now returns the dangling link itself, and for similar
7234 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
7235 link itself. (In these cases the old code signalled an error and
7236 looped endlessly, respectively.) Thus, DIRECTORY now works even
7237 in the presence of dangling and cyclic symbolic links.
7238 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
7239 is now a supported extension again, since the consensus on
7240 sbcl-devel was that it can be useful for ordinary development
7241 work, not just for debugging SBCL itself.
7242 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
7243 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
7244 that currently-defined functions might be redefined later with
7245 different return types.
7246 * Hash tables can be printed readably, as inspired by CMU CL code
7247 of Eric Marsden and SBCL code of Martin Atzmueller.
7248 * better error handling in CLOS method combination, thanks to
7249 Martin Atzmueller porting Pierre Mai's CMU CL patches
7250 * more overflow fixes for >16Mbyte I/O buffers
7251 * A bug in READ has been fixed, so that now a single Ctrl-D
7252 character suffices to cause end-of-file on character streams.
7253 In particular, now you only need one Ctrl-D at the command
7254 line (not two) to exit SBCL.
7255 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
7257 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
7258 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
7259 does the right thing.
7260 * The implementation of some type tests, especially for CONDITION
7261 types, is now tidier and maybe faster, due to CMU CL code
7262 originally by Douglas Crosher, ported by Martin Atzmueller.
7263 * Some math functions have been fixed, and there are new
7264 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
7265 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
7266 * (There are also some new optimizers in contrib/*-extras.lisp. Those
7267 aren't built into sbcl-0.6.13, but are a sneak preview of what's
7268 likely to be built into sbcl-0.7.0.)
7269 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
7270 CL, ported to SBCL by Martin Atzmueller)
7271 * DESCRIBE now gives more information in some cases. (Pierre Mai's
7272 patch to CMU CL, ported to SBCL by Martin Atzmueller)
7273 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
7274 * There's a new slam.sh hack to shorten the edit/compile/debug
7275 cycle for low-level changes to SBCL itself, and a new
7276 :SB-AFTER-XC-CORE target feature to control the generation of
7277 the after-xc.core file needed by slam.sh.
7278 * minor incompatible change: The ENTRY-POINTS &KEY argument to
7279 COMPILE-FILE is no longer supported, so that now every function
7280 gets an entry point, so that block compilation looks a little
7281 more like the plain vanilla ANSI section 3.2.2.3 scheme.
7282 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
7283 returns the number of bytes consed since the system started,
7284 rather than the number consed since the first time the function
7285 was called. (The new definition parallels ANSI functions like
7286 CL:GET-INTERNAL-RUN-TIME.)
7287 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
7288 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
7289 supported. Now DIRECTORY always does the abstract Common-Lisp-y
7290 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
7291 * Fasl file version numbers are now independent of the target CPU,
7292 since historically most system changes which required version
7293 number changes have affected all CPUs equally. Similarly,
7294 the byte fasl file version is now equal to the ordinary
7297 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
7298 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
7299 is no longer recognized. I apologize for this, because it was
7300 listed in SB-EXT as a supported extension, but I found that
7301 its existing behavior was poorly specified, as well as incorrectly
7302 specified, and it looked like too much of a mess to straighten it
7303 out. I have enough on my hands trying to get ANSI stuff to work..
7304 * many patches ported from CMU CL by Martin Atzmueller, with
7305 half a dozen bug fixes in pretty-printing and the debugger, and
7306 half a dozen others elsewhere
7307 * fixed bug 13: Floating point infinities are now supported again.
7308 They might still be a little bit flaky, but thanks to bug reports
7309 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
7310 as flaky as they were.
7311 * The --noprogrammer command line option is now supported. (Its
7312 behavior is slightly different in detail from what the old man
7313 page claimed it would do, but it's still appropriate under the
7314 same circumstances that the man page talks about.)
7315 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
7316 are now supported, and enabled by default. Thus, the compiler can
7317 handle many floating point and complex operations much less
7318 inefficiently. (Thus e.g. you can implement a complex FFT
7320 * The compiler now detects type mismatches between DECLAIM FTYPE
7321 and DEFUN better, and implements CHECK-TYPE more correctly, and
7322 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
7323 thanks to patches from Martin Atzmueller.
7324 * various fixes to make the cross-compiler more portable to
7325 ANSI-conforming-but-different cross-compilation hosts (notably
7326 Lispworks for Windows, following bug reports from Arthur Lemmens)
7327 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
7328 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
7329 fixed thanks to Pierre Mai's CMU CL patches.
7330 * fixes to keep the system from overflowing internal counters when
7331 it tries to use i/o buffers larger than 16M bytes
7332 * fixed bug 45a: Various internal functions required to support
7333 complex special functions have been merged from CMU CL sources.
7334 (When I was first setting up SBCL, I misunderstood a compile-time
7335 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
7336 * improved support for type intersection and union, fixing bug 12
7337 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
7338 more obscure bugs as well
7339 * some steps toward byte-compiling non-performance-critical
7340 parts of the system, courtesy of patches from Martin Atzmueller
7341 * Christophe Rhodes has made some debian packages of sbcl at
7342 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
7343 From his sbcl-devel e-mail of 2001-04-08 they're not completely
7344 stable, but are nonetheless usable. When he's ready, I'd be happy
7345 to add them to the SourceForge "File Releases" section. (And if
7346 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
7347 * new fasl file format version number (because of changes in
7348 internal representation of (OR ..) types to accommodate the new
7349 support for (AND ..) types, among other things)
7351 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
7352 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
7354 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
7356 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
7357 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
7358 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
7359 * DESCRIBE now works on structure objects again.
7360 * Most function call argument type mismatches are now handled as
7361 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
7362 know whether the function will be redefined before the call is
7363 executed. (The compiler could flag local calls with full WARNINGs,
7364 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
7365 it doesn't keep track of enough information to know whether calls
7366 are local in this sense.)
7367 * Compiler output is now more verbose, with messages truncated
7368 later than before. (There should be some supported way for users
7369 to override the default verbosity, but I haven't decided how to
7370 provide it yet, so this behavior is still controlled by the internal
7371 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
7372 src/compiler/ir1util.lisp.)
7373 * Fasl file format version numbers have increased again, because
7374 support for the Gray streams extension changes the layout of the
7375 system's STREAM objects.
7376 * The Gray subclassable streams extension now works, thanks to a
7377 patch from Martin Atzmueller.
7378 * The full LOAD-FOREIGN extension (not just the primitive
7379 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
7380 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
7381 but like most other programs, it defaults to copying the Unix
7382 environment from the original process instead of starting the
7383 new process in an empty environment.
7384 * Extensions which manipulate the Unix environment now support
7385 an :ENVIRONMENT keyword option which doesn't smash case or
7386 do other bad things. The CMU-CL-style :ENV option is retained
7387 for porting convenience.
7388 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
7389 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
7391 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
7393 * A patch from Martin Atzmueller seems to have solved the SIGINT
7394 problem, and as far as we know, signal-handling now works cleanly.
7395 (If you find any new bugs, please report them!)
7396 * The system no longer defaults Lisp source file names to types
7397 ".l", ".cl", or ".lsp", but only to ".lisp".
7398 * The compiler no longer uses special default file extensions for
7399 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
7400 seems to expect a single default extension for all compiled code,
7401 and there's no compelling reason to try to stretch the standard
7402 to allow two different extensions.) Instead, byte-compiled files
7403 default to the same extension as native-compiled files.
7404 * Fasl file format version numbers have increased again, because
7405 a rearrangement of internal implementation packages made some
7406 dumped symbols in old fasl files unreadable in new cores.
7407 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
7408 many fewer weird special cases.
7409 * Bug #17 (differing COMPILE-FILE behavior between logical and
7410 physical pathnames) has been fixed, and some related misbehavior too,
7411 thanks to a patch from Martin Atzmueller.
7412 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
7413 by Tim Moore, ported to SBCL by Martin Atzmueller.
7414 * Martin Atzmueller fixed several filesystem-related problems,
7415 including bug #36, in part by porting CMU CL patches, which were
7416 written in part by Paul Werkowski.
7417 * More compiler warnings in src/runtime/ are gone, thanks to
7418 more patches from Martin Atzmueller.
7419 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
7422 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
7424 * DESCRIBE now works on CONDITION objects.
7425 * The debugger now handles errors which arise when trying to print
7426 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
7428 * The build system now uses an additional file, customize-target-features.lisp,
7429 to allow local modifications to the target *FEATURES* list. (The point of
7430 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
7431 debugging features enabled, without having to worry about propagating it
7432 into everyone's system when I do a "cvs update".) When no
7433 customize-target-features.lisp file exists, the target *FEATURES* list
7434 should be constructed the same way as before.
7435 * fixed bugs in DEFCONSTANT ANSI-compatibility:
7436 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
7437 warn about behavior which is undefined under the ANSI spec. Note: This
7438 is specified by ANSI, but it's not very popular with programmers.
7439 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
7440 macro in the SBCL sources for an example of a workaround which you
7441 might use to make portable ANSI-standard code which does what you want.
7442 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
7443 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
7444 when it's used as a non-toplevel form. (This is required in order
7445 to implement the DEFCONSTANT-EQX macro.)
7446 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
7447 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
7448 funny things, due to bugs in the implementation of EVAL-WHEN
7449 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
7450 non-toplevel DEFCONSTANTs are uncommon.)
7451 * The core file version number and fasl file version number have been
7452 incremented, because the old noncompliant DEFCONSTANT behavior involved
7453 calling functions which no longer exist, and because I also took the
7454 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
7455 * fixed bug 1 (error handling before read-eval-print loop starts), and
7456 redid debugger restarts and related debugger commands somewhat while
7458 ** The QUIT debugger command is gone, since it did something
7459 rather different than the SB-EXT:QUIT command, and since it never
7460 worked properly outside the main toplevel read/eval/print loop.
7461 Invoking the new TOPLEVEL restart provides the same functionality.
7462 ** The GO debugger command is also gone, since you can just invoke
7463 the CONTINUE restart directly instead.
7464 ** The TOP debugger command is also gone, since it's redundant with the
7465 FRAME 0 command, and since it interfered with abbreviations for the
7467 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
7469 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
7470 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
7471 some porting work by Martin Atzmueller)
7472 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
7473 with a boatload of patches which he ported to SBCL. Now that those
7475 ** The system tries to make sure that its low-priority messages
7476 are prefixed by semicolons, to help people who like to use
7477 syntax highlighting in their ILISP buffer. (This patch
7478 was originally due to Raymond Toy.)
7479 ** The system now optimizes INTEGER-LENGTH better, thanks to more
7480 patches originally written by Raymond Toy.
7481 ** The compiler understands coercion between single-value and
7482 multiple-VALUES type expressions better, getting rid of some very
7483 weird behavior, thanks to patches originally by Robert MacLachlan
7484 and Douglas Crosher.
7485 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
7486 lambda lists, thanks to a patch originally by Pierre Mai.
7487 ** The system no longer bogusly warns about "abbreviated type
7489 ** The compiler gets less confused by inlining and RETURN-FROM,
7490 thanks to some patches originally by Tim Moore.
7491 ** The system no longer hangs when dumping circular lists to fasl
7492 files, thanks to a patch originally from Douglas Crosher.
7493 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
7494 undefined function error.
7495 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
7496 in structure slot initforms) for now, documented workaround instead:-|
7497 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
7498 * fixed bug 5: added stubs for various Gray stream functions called
7499 in the not-a-CL:STREAM case, so that even when Gray streams aren't
7500 installed, at least appropriate type errors are generated
7501 * fixed bug 8: better reporting of various PROGRAM-ERRORs
7502 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
7503 consistently in DEFMETHOD forms.
7504 * removed bug 21 from BUGS, since Martin Atzmueller points out that
7505 it doesn't seem to affect SBCL after all
7506 * The C runtime system now builds with better optimization and many
7507 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
7509 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
7511 * The system is now under CVS at SourceForge (instead of the
7512 CVS repository on my home machine).
7513 * The new signal handling code has been tweaked to treat register
7514 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
7515 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
7516 downstream, e.g. in debug-int.lisp, has implicit dependencies
7517 on the unsignedness of integer representation of machine words,
7518 and that caused the system to bomb out with infinite regress
7519 when trying to recover from type errors involving signed values,
7520 e.g. (BUTLAST '(1 2 3) -1).)
7521 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
7522 (This was one of the bugs Peter Van Eynde reported back in July.)
7523 * The system now uses code inspired by Colin Walters' O(N)
7524 implementation of MAP (from the cmucl-imp@cons.org mailing
7525 list, 2 September 2000) when it can't use a DEFTRANSFORM to
7526 inline the MAP operation, and there is more than one
7527 sequence argument to the MAP call (so that it can't just
7528 do ETYPECASE once and for all based on the type of the
7529 single sequence argument). (The old non-inline implementation
7530 of the general M-argument sequence-of-length-N case required
7531 O(M*N*N) time when any of the sequence arguments were LISTs.)
7532 * The QUIT :UNIX-CODE keyword argument has been renamed to
7533 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
7534 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
7536 * Raymond Wiker's patches to port dynamic loading from Linux to
7537 FreeBSD have been added.
7538 * The BUGS file is now more nearly up to date, thanks in large part
7539 to Martin Atzmueller's review of it.
7540 * The debugger now flushes standard output streams before it begins
7541 its output ("debugger invoked" and so forth).
7542 * The core version number and fasl file version number have both
7543 been incremented, because of incompatible changes in the layout
7545 * FINISH-OUTPUT is now called more consistently on QUIT. (It
7546 used to not be called for a saved Lisp image.)
7547 * Martin Atzmueller's version of a patch to fix a compiler crash,
7548 as posted on sbcl-devel 13 September 2000, has been installed.
7549 * Instead of installing Martin Atzmueller's patch for the
7550 compiler transform for SUBSEQ, I deleted the compiler transform,
7551 and transforms for some similar consing operations.
7552 * A bug in signal handling which kept TRACE from working on OpenBSD
7554 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
7555 away by constant folding
7556 * The system now defines its address space constants in one place
7557 (in the Lisp sources), and propagates them automatically elsewhere
7558 (through GENESIS and the sbcl.h file). Therefore, patching the
7559 address map is less unnecessarily tedious and error-prone. The
7560 Lisp names of address space constants have also been systematized.
7561 * CVS tags like dollar-Header-dollar have been removed from
7562 the sources, because they have never saved me trouble and
7563 they've been source of trouble working with patches and other
7564 diff-related operations.
7565 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
7566 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
7568 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
7570 * The system has been ported to OpenBSD.
7571 * The system now compiles with a simple "sh make.sh" on the systems
7572 that it's supported on. I.e., now you no longer need to tweak
7573 text in the target-features.lisp-expr and symlinks in src/runtime/
7574 by hand, the make.sh takes care of it for you.
7575 * The system is no longer so grossly inefficient when compiling code
7576 involving vectors implemented as general (not simple) vectors (VECTOR T),
7577 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
7578 which dares to use the various sequence functions on non-simple
7579 vectors, takes less of a performance hit.
7580 * There is now a primitive type predicate VECTOR-T-P
7581 to test for the (VECTOR T) type, so that e.g.
7582 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
7583 can now be compiled with some semblance of efficiency. (The old code
7584 turned the type declaration into a full call to %TYPEP at runtime!)
7585 * AREF on (VECTOR T) is still not fast, since it's still compiled
7586 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
7587 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
7588 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
7589 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
7590 without making full calls to SUBTYPEP at runtime.
7591 (Some analogous efficiency issues for non-simple vectors specialized to
7592 element types other than T, or for non-simple multidimensional arrays,
7593 have not been addressed. They could almost certainly be handled the
7594 same way if anyone is motivated to do so.)
7595 * The changes in array handling break binary compatibility, so
7596 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
7597 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
7598 instead of (VALUES T T).
7599 * By following the instructions that Dan Barlow posted to sbcl-devel
7600 on 2 July 2000, I was able to enable primitive dynamic object
7601 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
7602 functionality is not implemented (since it calls ld to resolve
7603 library references automatically, requiring RUN-PROGRAM for its
7604 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
7605 try to resolve library references) is now supported.
7606 * The system now flushes the standard output streams when it terminates,
7607 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
7608 them at several other probably-convenient times, e.g. in each pass of
7609 the toplevel read-eval-print loop, and after evaluating a form given
7610 as an "--eval" command-line option. (These changes were motivated by a
7611 discussion of stream flushing issues on cmucl-imp in August 2000.)
7612 * The source transform for TYPEP of array types no longer assumes
7613 that an array whose element type is a not-yet-defined type
7614 is implemented as an array of T, but instead punts, so that the
7615 type will be interpreted at runtime.
7616 * There is now some support for cross-compiling in make.sh: each of
7617 the phases of make.sh has its own script. (This should be transparent
7618 to people doing ordinary, non-cross-compile builds.)
7619 * Since my laptop doesn't have hundreds of megabytes of memory like
7620 my desktop machine, I became more motivated to do some items on
7621 my to-do list in order to reduce the size of the system a little:
7622 ** Arrange for various needed-only-at-cold-init things to be
7623 uninterned after cold init. To support this, those things have
7624 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
7625 symbols with such names are now uninterned after cold init).
7626 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
7627 fasl files for cold load.
7628 ** Remove the old compiler structure pooling code (which used to
7629 be conditional on the target feature :SB-ALLOC) completely.
7630 ** Redo the representation of some data in cold init to be more compact.
7631 (I also looked into supporting byte compiled code at bootstrap time,
7632 which would probably reduce the size of the system a lot, but that
7633 looked too complicated, so I punted for now.)
7634 * The maximum signal nesting depth in the src/runtime/ support code has
7635 been reduced from 4096 to 256. (I don't know any reason for the very
7636 large old value. If the new smaller value turns out to break something,
7637 I'll probably just bump it back up.)
7638 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
7640 * Many, many bugs reported by Peter Van Eynde have been added to
7641 the BUGS list; some have even been fixed.
7642 * While enabling dynamic object file loading, I tried to make the
7643 code easier to understand, renaming various functions and variables
7644 with less ambiguous names, and changing some function calling
7645 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
7646 * While trying to figure out how to do the OpenBSD port, I tried to
7647 clean up some of the code in src/runtime/. In particular, I dropped
7648 support for non-POSIX signal handling, added various comments,
7649 tweaked the code to reduce the number of compilation warnings, and
7650 renamed some files to increase consistency.
7651 * To support the new automatic configuration functionality in make.sh,
7652 the source file target-features.lisp-expr has been replaced with the
7653 source file base-target-features.lisp-expr and the machine-generated
7654 file local-target-features.lisp-expr.
7655 * fixed a stupid quoting error in make.sh so that using CMU CL
7656 "lisp -batch" as cross-compilation host works again
7658 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
7660 * DESCRIBE no longer tries to call itself recursively to describe
7661 bound/fbound values, so that it no longer fails on symbols which are
7662 bound to themselves (like keywords, T, and NIL).
7663 * DESCRIBE now works on generic functions.
7664 * The printer now prints less-screwed-up representations of closures
7665 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
7666 * A private symbol is used instead of the :EMPTY keyword previously
7667 used to mark empty slots in hash tables. Thus
7668 (DEFVAR *HT* (MAKE-HASH-TABLE))
7669 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
7670 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
7671 now does what ANSI says that it should. (You can still get
7672 similar noncompliant behavior if bang on the hash table
7673 implementation with all the symbols you get back from
7674 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
7675 This breaks binary compatibility, since tests for equality to
7676 :EMPTY are wired into things like the macroexpansion of
7677 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
7679 * There's now a minimal placeholder implementation for CL:STEP,
7680 as required by ANSI.
7681 * An obscure bug in the interaction of the normal compiler, the byte
7682 compiler, inlining, and structure predicates has been patched
7683 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
7684 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
7686 * Missing ordinary arguments in a macro call are now detected even
7687 when the macro lambda list contains &KEY or &REST.
7688 * The debugger no longer complains about encountering the top of the
7689 stack when you type "FRAME 0" to explicitly instruct it to go to
7690 the top of the stack. And it now prints the frame you request even
7691 if it's the current frame (instead of saying "You are here.").
7692 * As specified by ANSI, the system now always prints keywords
7693 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
7695 * The default initial SIZE of HASH-TABLEs is now smaller.
7696 * Type information from CLOS class dispatch is now propagated
7697 into DEFMETHOD bodies, so that e.g.
7698 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7700 is now basically equivalent to
7701 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7702 (DECLARE (TYPE SINGLE-FLOAT X))
7704 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
7705 operation, without having to do run-time type dispatch.
7706 * The macroexpansion of DEFMETHOD has been tweaked so that it has
7707 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
7708 * Since I don't seem to be making big file reorganizations very often
7709 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
7710 is overflowing my ability to conveniently back them up), I've finally
7711 checked the system into CVS. (The CVS repository is on my home system,
7712 not at SourceForge -- putting it on SourceForge might come later.)
7713 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
7714 high-level GC-NOTIFY-FOO functions send their output. (There's
7715 still very little control of where low-level verbose GC functions
7716 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
7717 less than it used to -- the GC-NOTIFY-FOO functions are now under
7718 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
7719 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
7720 in only one place in the source code, and propagates it automatically
7721 everywhere that it's needed. Thus e.g. when I bump the version from
7722 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
7723 * The C source files now include boilerplate legalese and documentation
7724 at the head of each file (just as the Lisp source files already did).
7725 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
7726 to his page will be replaced with a link to his new CLiki service.
7728 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
7730 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
7731 * The build process now looks for GNU make under the default name "gmake",
7732 instead of "make" as it used to. If GNU make is not available as "gmake"
7733 on your system, you can change this default behavior by setting the
7734 GNUMAKE environment variable.
7735 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
7736 can build without error under CMU CL.
7738 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
7740 * There is now a partial SBCL user manual (with some new text and some
7741 text cribbed from the CMU CL manual).
7742 * The beginnings of a profiler have been added (starting with the
7743 CMU CL profiler and simplifying and cleaning up). Eventually the
7744 main interface should be through the TRACE macro, but for now,
7745 it's still accessed through vaguely CMU-CL-style functions and macros
7746 exported from the package SB-PROFILE.
7747 * Some problems left over from porting CMU CL to the new
7748 cross-compilation bootstrap process have been cleaned up:
7749 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
7750 instead of SB!XC:DEFMACRO, compounded by an oversight on my
7751 part when getting rid of the compiler *BACKEND* stuff.)
7752 ** The value of *NULL-TYPE* was screwed up, because it was
7753 being initialized before the type system knew the final
7754 definition of the 'NULL type. This screwed up several key
7755 optimizations in the compiler, causing inefficiency in all sorts
7756 of places. (I found it because I wanted to understand why
7757 GET-INTERNAL-RUN-TIME was consing.)
7758 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7759 PROCLAIM FTYPE information. Unfortunately this broke binary
7760 compatibility again, since now the forms output by DEFGENERIC
7761 to refer to functions which didn't exist in 0.6.3.
7762 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7763 can use the new (as of 0.6.3) transform for SOME into MAP into
7765 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7766 values to (INTEGER 0 1000000), so that the time code will no longer
7767 occasionally get blown up by Linux returning 1000000 microseconds
7768 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7769 its output conform to the ANSI spec. (Alas, this makes its output
7770 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7771 * A full call to MAP NIL with a single sequence argument no longer conses.
7772 * fixes to problems pointed out by Martin Atzmueller:
7773 * The manual page no longer talks about multiprocessing as though
7774 it were currently supported.
7775 * The ILISP support patches have been removed from the distribution,
7776 because as of version 5.10.1, ILISP now supports SBCL without us
7777 having to maintain patches.
7778 * added a modified version of Raymond Toy's recent CMU CL patch for
7779 EQUALP comparison of HASH-TABLE
7781 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7783 * The system still can't cross-compile itself with
7784 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7785 entails), but at least it can compile more of itself that way
7786 than it used to be able to, and various buglets which were uncovered
7787 by trying to cross-compile itself that way have now been fixed.
7788 * This release breaks binary compatibility again. This time
7789 at least I've incremented the FASL file format version to 2, so that the
7790 problem can be detected reliably instead of just causing weird errors.
7791 * various new style warnings:
7792 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7793 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7794 ** using the lexical binding of a variable named in the *FOO* style
7795 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7796 as specified by ANSI.
7797 * *RANDOM-STATE* is no longer automatically initialized from
7798 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7799 default behavior of the system is to repeat its behavior every time
7800 it's run. If you'd like to change this behavior, you can always
7801 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7802 old convention there was no comparably easy way to get the system to
7803 repeat its behavior every time it was run.
7804 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7805 FTYPE declarations has been removed, in favor of their ANSI
7806 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7807 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7808 the types of their sequence arguments can be determined at compile time.
7809 This is done through a new open code expansion for MAP which eliminates
7810 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7811 argument types can be determined at compile time.
7812 * The optimizer now transforms COERCE into an identity operation when it
7813 can prove that the coerced object is already of the correct type. (This
7814 can be a win for machine generated code, including the output of other
7815 optimization transforms, such as the MAP transform above.)
7816 * Credit information has been moved from source file headers into CREDITS.
7817 * Source file headers have been made more standard.
7818 * The CASE macro now compiles without complaining even when it has
7821 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7823 * (Note that the way that the PCL macroexpansions were rewritten
7824 to accommodate the change in DEFGENERIC below breaks binary
7825 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7826 not run under sbcl-0.6.2. Once we get out of alpha releases,
7827 i.e. hit release 1.0.0, we'll probably try to maintain binary
7828 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7829 and sbcl-1.4.4. Until then, however, it might be fairly common
7830 for maintenance releases to break binary compatibility.)
7831 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7833 * The reporting of unhandled signals has been changed to print some
7834 explanatory text as well as the report form. (Previously only
7835 the report form was printed.)
7836 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7837 it defines, so that the compiler no longer issues undefined function
7838 warnings for compiled-but-not-yet-loaded generic functions.
7839 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7840 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7841 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7842 section of the ANSI spec are supported.
7843 * The "" nickname for the "KEYWORD" package has been removed.
7844 The reader still handles symbol tokens which begin with a package marker
7845 as keywords, but it doesn't expose its mechanism for doing so in the
7846 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7847 * The system now issues STYLE-WARNINGs for contradictory TYPE
7848 proclamations. (Warnings for contradictory FTYPE proclamations would
7849 be nice too, but those can't be done usefully unless the type system
7850 is made smarter about FUNCTION types.)
7851 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7852 systematized, so that "*target-*.lisp is supposed to exist only on the
7853 target and imply that there's a related file which exists on the
7854 host, and *host-*.lisp is supposed to exist only on the host and imply
7855 that there's a related file which exists on the target. This involves a
7856 lot of renaming. Hopefully the acute confusion caused by the renaming
7857 will be justified by the reduction in chronic confusion..
7858 ** runtime-type.lisp -> early-target-type.lisp
7859 ** target-type.lisp -> late-target-type.lisp
7860 ** early-host-format.lisp -> early-format.lisp
7861 ** late-host-format.lisp -> late-format.lisp
7862 ** host-error.lisp -> misc-error.lisp
7863 ** early-error.lisp -> early-target-error.lisp
7864 ** late-error.lisp -> late-target-error.lisp
7865 ** host-defboot.lisp -> early-defboot.lisp
7866 ** code/misc.lisp -> code/target-misc.lisp
7867 ** code/host-misc.lisp -> code/misc.lisp
7868 ** code/numbers.lisp -> code/target-numbers.lisp
7869 ** code/early-numbers.lisp -> numbers.lisp
7870 ** early-host-type.lisp -> early-type.lisp
7871 ** late-host-type.lisp -> late-type.lisp
7872 ** host-typep.lisp -> typep.lisp
7873 ** load.lisp -> target-load.lisp
7874 ** host-load.lisp -> load.lisp
7875 ** host-disassem.lisp -> disassem.lisp
7876 ** host-insts.lisp -> insts.lisp
7877 ** byte-comp.lisp -> target-byte-comp.lisp
7878 ** host-byte-comp.lisp -> byte-comp.lisp
7879 ** host-signal.lisp -> signal.lisp
7880 ** host-defstruct.lisp -> defstruct.lisp
7881 ** late-target-type.lisp -> deftypes-for-target.lisp
7882 Furthermore, several other previously target-only files foo.lisp (e.g.
7883 hash-table.lisp and random.lisp) have been split into a target-and-host
7884 foo.lisp file and a target-only target-foo.lisp file, with their key type
7885 definitions in the target-and-host part, so that the cross-compiler will
7886 know more about target types.
7887 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7888 gone away. In their place are various *BACKEND-FOO* variables
7889 corresponding to the slots of the old structure.
7890 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7891 into the target SBCL has been fixed.
7892 * The chill.lisp system for loading cold code into a running SBCL
7894 * Support for the CMU CL "scavenger hook" extension has been removed.
7895 (It was undocumented and unused in the CMU CL sources that SBCL was
7896 derived from, and stale in sbcl-0.6.1.)
7897 * Various errors in the cross-compiler type system were detected
7898 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7899 (enabling various consistency checks). Many of them were fixed,
7900 but some hard problems remain, so the compiler is back to
7901 running without *TYPE-SYSTEM-INITIALIZED* for now.
7902 * As part of the cross-compiler type system cleanup, I implemented
7903 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7904 * I have started adding UNCROSS calls throughout the type system
7905 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7906 on cross-compiler input files will be able to go away, and various
7908 * CONSTANTP now returns true for quoted forms (as explicitly required
7911 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7913 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7914 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7915 (MAKE-LIST -1). In the longer term, it ought to become true
7916 that declarations are assertions even at SAFETY 1. For now, it's not
7917 quite true even at SAFETY 3, but it's at least more nearly true..
7918 (Note that this change seems to increases the size of the system by
7919 O(5%) and to decrease the speed of the compiler by 20% or more.)
7920 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7921 for the problem of printing dozens of lines of distracting information
7922 about low-level system machinery as part of the top stack frame
7923 on entry to the debugger when an undefined function was called.
7924 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7925 is not reset to COMMON-LISP-USER.
7926 * Compilation of stuff related to dyncount.lisp has been made conditional
7927 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7928 smaller. The various dyncount-related symbols have been moved into
7929 a new "SB-DYNCOUNT" package.
7930 * tty-inspect.lisp has been renamed to inspect.lisp.
7931 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7932 feature has gone away. (When we eventually port to other flavors of
7933 libc and/or Unix, we'll try to make the differences between flavors
7934 invisible at the user level.)
7935 * Various other *FEATURES* tags, and/or their associated conditionals,
7936 have been removed if obsolescent, or given better documentation, or
7937 sometimes given more-mnemonic names.
7939 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7941 * tidied up "make.sh" script
7942 * tidied up system directory structure
7943 * better "clean.sh" behavior
7944 * added doc/FOR-CMUCL-DEVELOPERS
7945 * many many small tweaks to output format, e.g. removing possibly-confusing
7946 trailing #\. character in DESCRIBE-INSTANCE
7947 * (EQUALP #\A 'A) no longer signals an error.
7948 * new hashing code, including EQUALP hashing
7949 * tidied up Lisp initialization and toplevel
7950 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7951 * command line argument processing
7952 * added POSIX-GETENV function to deal with Unix-ish environment variables
7953 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7954 terminating SBCL on EOF
7955 * non-verbose GC by default
7956 * There is no more "sbcl" shell script; the sbcl file is now the C
7957 runtime executable (just like CMU CL).
7958 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7960 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7961 symbol and package information as Lisp native symbol and package objects
7962 instead of strings naming symbols and strings naming packages. This way,
7963 whenever packages are renamed (as in warm init), debug information is
7964 transformed along with everything else.
7965 * tweaked the optimization policy declarations which control the building
7966 of SBCL itself. Now, among other things, the system no longer saves
7967 source location debugging information. (This helps two problems at once
7968 by reducing SBCL size and by keeping SBCL from trying to look for its
7969 sources -- which may not exist -- when reporting errors.)
7970 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7971 debugging and testing purposes
7972 * cleaned up printing, making the printer call PRINT-OBJECT for
7973 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7974 methods, giving nearly-ANSI behavior
7975 * converted almost all special variables to use *FOO* naming convention
7976 * deleted PARSE-TIME functionality, since it can be done portably
7977 * moved some files out of cold init into warm init
7978 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7980 * regularized formatting of source files
7981 * added an install.sh script
7982 * fixed ridiculous memory usage of cross-compiler by making
7983 compiler/alloc.lisp not try to do pooling unless it can hook
7984 itself into the GC of the cross-compilation host. Now the system
7985 builds nicely on my old laptop.
7986 * added :SB-ALLOC in target-features.lisp-expr
7987 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7988 was not implemented)
7989 * re-did condition handling and note reporting in the compiler. Notes
7990 are no longer handled by signalling conditions. Style warnings
7991 and warnings are handled more correctly and reported in such a way
7992 that it's easy to find one or the other in your output (so that you
7993 can e.g. figure out which of many problems caused COMPILE-FILE to
7995 * changed the severity of several compiler warnings from full WARNING
7996 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7997 compiler note reporting so that it doesn't use the condition system
7998 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7999 COMPILE-FILE command)
8000 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
8001 function. As a consequence, START-BLOCK and END-BLOCK declarations are
8002 no longer supported, since their implementation was deeply intertwingled
8003 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
8004 * removed bogus "support" for compiler macros named (SETF FOO), and
8005 removed the compiler macro for SETF INFO (but only after making a fool
8006 of myself on the cmucl-imp mailing list by posting a bogus patch for
8007 DEFINE-COMPILER-MACRO..)
8008 * Compiled files containing forms which have side effects on the Lisp
8009 reader (such as DEFPACKAGE forms) are now handled more correctly.
8010 (Compiler queuing of top level lambdas has been suppressed by setting
8011 *TOP-LEVEL-LAMBDA-MAX* to 0. )
8012 * deleted various currently-unused source files, e.g. gengc.lisp. They
8013 may be added back at some point e.g. when porting to other architectures,
8014 but until they are it's distracting to distribute them and to try to
8016 * deleted "UNCROSS couldn't recurse through.." style warnings, since
8017 there were so many of them they're just distractions, and UNCROSS is
8018 known to be able to handle the current sources
8019 * moved PROFILE functionality into TRACE, so that it will be clear
8020 how the wrapping and unwrapping of functions when you profile them
8021 interacts with the wrapping and unwrapping of functions when you
8022 trace them. (Actually, the functionality isn't there yet, but at least
8023 the interface specification is there. Hopefully, the functionality will
8024 arrive with some future maintenance release.)
8025 * removed host-oops.lisp
8026 * changed signature of QUIT function to allow UNIX-CODE argument
8027 * fixed READ-SEQUENCE bug
8028 * tweaked verbose GC output so that it looks more like the progress
8029 output that ANSI specifies for functions like LOAD
8030 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
8031 * added <http://sbcl.sourceforge.com> to the banner information printed by