1 ;;;; -*- coding: utf-8; -*-
2 * new feature: SIMPLE-ARRAY-VECTOR provides access to the underlying
3 data vector of an multidimensional SIMPLE-ARRAY.
4 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
5 * bug fix: lexical type declarations are now correctly reported by
6 SB-CLTL2. (reported by Larry D'Anna)
7 * bug fix: STRING-TO-OCTETS did not handle :START properly when
8 using UTF-8 as external format. (thanks to Luis Oliveira)
9 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
10 are signalled correctly. (thanks to Stas Boukarev)
11 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
12 designator. (thanks to Tobias Ritterweiler)
13 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
14 designator, and returns T instead of the function. (thanks to
17 changes in sbcl-1.0.23 relative to 1.0.22:
18 * enhancement: when disassembling method functions, disassembly
19 for the associated fast function is also produced.
20 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
22 * optimization: printing with *PRINT-PRETTY* true is now more
23 efficient as long as the object being printed doesn't require
24 special handling by the pretty printer.
25 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
26 now interact correctly with type declarations.
27 * partial bug fix: PCL detects infinite recursion during wrapper
28 validation. (thanks to Attila Lendvai)
29 * bug fix: #426; nested function calls are inlined properly.
30 Previously if FOO was an inline function, in calls of the form
31 (FOO (FOO ...)) the outer call was not inlined.
32 * bug fix: long long arguments passed in registers to alien
33 functions on PowerPC Linux and NetBSD are now handled correctly
34 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
36 changes in sbcl-1.0.22 relative to 1.0.21:
37 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
38 for the shared object in the current directory, but passes the native
39 namestring of the designated pathname to the operation system's shared
40 object loading function as-it.
41 * minor incompatible change: --disable-debugger toplevel option now takes
42 effect before processing of initialization files and --eval or --load
44 * new feature: new commandline argument: --script, which supports
45 shebang lines. See documentation for details. (based on work by
47 * new feature: SAVE-LISP-AND-DIE can save current values of
48 --dynamic-space-size and --control-stack-size in the executable core,
49 causing it to skip normal runtime option processing. See documentation
50 for details. (thanks to Zach Beane)
51 * enhancement: inoccous calls to EVAL or generic functions dispatching
52 on subclasses of eg. STREAM no longer cause compiler notes to appear.
53 * enhancement: the system no longer resignals errors from --load and
54 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
55 associated with the original error to be lost. (thanks to Ariel
57 * enhancement: :DONT-SAVE keyword argument has been added to
58 LOAD-SHARED-OBJECT for controlling interaction with
59 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
60 the effects of an earlier LOAD-SHARED-OBJECT call.
61 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
62 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
63 provided. (reported by Cedric St-Jean)
64 * bug fix: circularity handling in the reader did not treat raw
65 structure slots correctly. (reported by Cedric St-Jean)
66 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
67 file descriptors when there were none.
68 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
69 was broken. (reporteed by Willem Broekema)
70 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
71 pathnames without a directory.
72 * bug fix: COMPILE-FILE did not warn about undefined variable
73 references at toplevel, and LOAD of the resulting fasl did
75 * bug fix: functions with non-required arguments used to end up with
76 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
77 * bug fix: redefining a function with non-required arguments didn't
78 update the system's knowledge about its call signature properly.
79 * bug fix: fixed #431; incompatible alien record type redefinitions
80 are detected and handled. (reported by Neil Haven)
81 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
82 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
84 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
85 after alien stack frames.
86 * bug fix: strings passed to mk{s,d}temp lacked null termination
88 changes in sbcl-1.0.21 relative to 1.0.20:
89 * new feature: the compiler is able to track the effective type of a
90 generic function across method addition and removal.
91 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
92 appropriately typed structure slots without locking.
93 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
94 information like those gathered by TIME using a programming-friendly
96 * new feature: TIME reports time taken even if the form performs a
97 non-local transfer of control.
98 * enhancement: reduced conservativism on GENCGC platforms: on
99 average 45% less pages pinned (measured from SBCL self build).
100 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
101 mutate constant symbols or violate declaimed type of the symbol.
102 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
103 sleeping on the semaphore in heavily contested semaphores.
104 * bug fix: semaphores and condition variables were not interrupt
106 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
107 owned by other threads anymore.
108 * bug fix: FIND on lists called KEY outside the specified
109 subsequence. (reported by budden)
110 * bug fix: LOG doesn't use single-float intermediate results when
111 given mixed integer and double-float arguments, leading to better
112 precision. (reported by Bob Felts)
113 * bug fix: LOG with base zero returned values of inconsistent type.
115 changes in sbcl-1.0.20 relative to 1.0.19:
116 * minor incompatible change: OPTIMIZE qualities
117 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
118 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
119 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
120 * documentation: some slot access efficiency guidelines have been
121 added to the user manual.
122 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
123 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
124 as ASSOC and MEMEBER.
125 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
126 to more efficient EQ-comparison versions more often.
127 * optimization: enhanced derivation of DOLIST iteration variable type
129 * optimization: constant folding of simple (LIST ...) forms as DOLIST
131 * optimization: runtime lookup of function definitions can be
132 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
133 * optimization: compiler is able to derive the return type of
134 (AREF (THE STRING X) Y) as being CHARACTER.
135 * optimization: CLRHASH on empty hash-tables no longer does pointless
136 work. (thanks to Alec Berryman)
137 * optimization: REPLACE deftransforms don't punt when :START1 or
139 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
140 no longer emits a code deletion note. (reported by Andrew
142 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
143 functions with an odd number of &OPTIONAL arguments, a &REST
144 argument, and one or more &KEY arguments at the call site.
145 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
146 arguments appeared at call sites as well.
147 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
148 READ-LINE &co can no longer read from them afterwards. (reported
150 * bug fix: fixed #427: unused local aliens no longer cause compiler
151 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
153 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
154 alien-stack leakage. (reported by Andy Hefner)
155 * bug fix: PROGV signals an error when an attempt to violate declared
156 type of a variable or bind a constant is made.
157 * bug fix: SET signals an error when an attempt to violate declared
158 type of a variable is made.
159 * bug fix: restart computation during the execution of a restart
160 test function no longer causes infinite recursion. (reported by
162 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
163 signals an error. (thanks to Pierre Mai)
164 * bug fix: EXPORT left symbol unexported in conflict situations.
165 (thanks to Michael Weber)
166 * bug fix: correctly handle name conflicts involving CL:NIL.
167 (thanks to Michael Weber)
168 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
169 conflicts arising from USEing package with conflicting symbols
170 correctly. (thanks to Michael Weber)
172 changes in sbcl-1.0.19 relative to 1.0.18:
173 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
174 warnings that go otherwise unhandled will be muffled if they are
175 of the type that's the value of this variable.
176 * optimization: stack allocation is slightly more efficient on x86
178 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
179 where a raw slot always is initialized using the initform whose
180 type is not know sufficiently well a compile-time are now compiled
181 correctly. (reported by John Morrison)
182 * bug fix: compiler no longer makes erronous assumptions in the
183 presense of non-foldable SATISFIES types.
184 * bug fix: stack analysis missed cleanups of dynamic-extent
185 arguments in non-let-converted calls to local functions.
186 * improvements to the Windows port:
187 ** adjusted address spaces for building on both Win32 and
188 Win64. (thanks for John Connors)
189 * fixed some bugs revealed by Paul Dietz' test suite:
190 ** interval arithmetic during type derivation used inexact integer
191 to single-float coercions.
192 ** arithmetic operations involving large integers and single
193 floats give the same results in compiled and interpreted code.
194 ** deriving the result type of COERCE no longer signals an error
195 if the derived type of the second argument is a MEMBER type
196 containing invalid type specifiers.
197 ** ADJOIN with constant NIL as second argument works correctly.
198 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
200 changes in sbcl-1.0.18 relative to 1.0.17:
201 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
202 profiles only the current thread.
203 * minor incompatible change: changes to SYMBOL-VALUE of constants
204 defined with DEFCONSTANT now signal an error.
205 * enhancement: SB-SPROF now has support for wallclock profiling,
206 and is also able to profile specific threads. REPORT output
207 has also additional sorting options.
208 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
210 * optimization: structure allocation has been improved
211 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
212 ** out of line constructors are ~10% faster.
213 ** inline constructors are ~15% faster.
214 ** inline constructors are capable of dynamic extent allocation
215 (generally on x86 and x86-64, in some cases on other platforms
217 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
219 * optimization: file compiler is now able to coalesce non-circular
220 lists, non-base strings, and bit-vectors. Additionally, constants
221 are never referenced through SYMBOL-VALUE at runtime.
222 * optimization: code defining methods on PRINT-OBJECT (and other
223 generic functions in the COMMON-LISP package) now loads faster.
224 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
226 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
227 fasl is now deleted. (reported by Attila Lendvai)
228 * bug fix: READ-LINE always returned NIL for the last line in files.
229 (reported by Yoshinori Tahara)
230 * bug fix: more accurate disassembly annotations of foreign function
231 calls. (thanks to Andy Hefner)
232 * bug fix: trimming non-simple strings and non-string string
233 designators when the there is nothing to trim works properly.
234 (thanks to James Knight)
235 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
236 (thanks to Travis Cross)
237 * fixed some bugs revealed by Paul Dietz' test suite:
238 ** NIL is a valid function name (regression at 1.0.13.38)
239 ** FILL on lists was missing its return value (regression at 1.0.12.27)
240 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
241 fill pointers properly (regression at 1.0.12.23)
242 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
243 displacement indices properly (regression at 1.0.12.23)
245 changes in sbcl-1.0.17 relative to 1.0.16:
246 * temporary regression: user code can no longer allocate closure
247 variable storage on stack, due to bug 419 without explicitly
248 requesting it. Please consult sbcl-devel for advice if you need to
249 use this feature in the meanwhile.
250 * new feature: runtime argument --control-stack-size can be used to
251 adjust thread default control stack size.
252 * enhancement: improved TIME output
253 ** all times are reported using the measured accuracy (milliseconds
254 for real and GC times, microseconds for everything else.)
255 ** processor cycle counts on x86 and x86-64.
256 ** interpreted forms are counted for both evaluator modes.
257 ** number of lambdas converted by the compiler is reported.
258 ** CPU percentage report (computed from real and total run time.)
259 ** more comprehensive run time reporting, using a condenced format
260 ** interperted form, lambda, and page fault counts are omitted
262 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
264 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
265 * optimization: two argument forms of LAST are upto ~10% faster
266 in normal SPEED policies.
267 * optimization: NCONC no longer needs to heap cons its &REST list
268 in normal SPEED policies.
269 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
271 * bug fix: UNION and NUNION work with :TEST-NOT once more,
272 regression since 1.0.9.1. (thanks to Eric Marsden)
273 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
274 since 1.0.15.36. (thanks to Paul Khuong)
275 * bug fix: LAST when always returned the whole list when given a bignum
276 as the second argument.
277 * bug fix: dynamic extent allocation of nested lists and vectors
278 could leak to otherwise accessible parts.
279 * bug fix: invalid optimization of heap-allocated alien variable
281 * bug fix: fasl header checking is less vulnerable to different
282 platform word lengths.
283 * bug fix: more correct assembler syntax for GNU binutils
284 2.18.50.0.4 support. (thanks to Marijn Schouten)
285 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
287 * bug fix: the fopcompiler can handle LOCALLY forms (with no
288 declarations) successfully. (reported by Attila Lendvai)
290 changes in sbcl-1.0.16 relative to 1.0.15:
291 * minor incompatible change: revert the changes to sb-posix's error
292 signaling added in 1.0.14.
293 * minor incompatible change: change PROBE-FILE back to returning
294 NIL whenever we can't get a truename, as was the case before 1.0.14.
295 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
296 inherits from ERROR instead of just CONDITION.
297 * new feature: SB-INTROSPECT can provide source locations for instances
298 as well. (thanks to Tobian Ritterweiler)
299 * optimization: binding special variables now generates smaller code
300 on threaded platforms.
301 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
302 and cases where no :TEST is given but the compiler can infer that
303 the element to search is of type (OR FIXNUM (NOT NUMBER)).
304 * optimization: better LOGNOT on fixnums.
305 * optimization: modular arithmetic for a particular requested width
306 is implemented using a tagged representation unless a better
307 representation is available.
308 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
309 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
310 for wellformedness and returns a specialized vector. (reported by
311 Francois-Rene Rideau)
312 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
313 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
314 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
315 unscheduling timer at the same time as another timer fires.
316 * bug fix: don't reschedule timers for dead threads.
317 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
318 * bug fix: copying output from RUN-PROGRAM to a stream signalled
319 bogus errors if select() was interrupted.
320 * enhancement: add support for fcntl's struct flock to SB-POSIX.
322 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
323 * enhancement: cleaner backtraces for interactive interrupts, as
324 well as other cases where the interesting frames used to be
325 obscured by interrupt handling frames.
326 * enhancement: untracing a whole package using (UNTRACE "FOO") is
327 now supported, and tracing a whole package using (TRACE "FOO") now
328 traces SETF-functions as well.
329 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
330 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
331 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
332 * unreadably printed representation of hash-tables now includes
334 * bug fix: partially fixed #188: type propagation from assignments
335 is now more efficient.
336 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
337 'DOUBLE-FLOAT) are not flushable.
338 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
339 full address of the object, and none of the tag bits.
340 * bug fix: readably printing hash-tables now respects other printer
341 control variables. (reported by Cedric St-Jean)
342 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
343 keyword with MAKE-HASH-TABLE.
344 * bug fix: export SB-POSIX:MKSTEMP.
345 * bug fix: SORT was not interrupt safe.
346 * bug fix: XREF accounts for the last node of each basic-block as
348 * bug fix: MAKE-INSTANCE optimizations interacted badly with
349 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
350 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
351 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
352 create obsolete instances in the case of redefinition or
353 obsoletion of a superclass. (thanks to Andy Hefner)
354 * bug fix: Support for the Alpha architecture has been revived; it had
355 suffered somewhat from lack of maintenance since sbcl-1.0.
356 * improvements to the Windows port:
357 ** The system detects the codepage to use at startup, instead of
358 using the value from the saved core. (thanks to Kei Suzuki)
360 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
361 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
362 (see documentation for details.)
363 * revived support for OpenBSD (contributed by Josh Elsasser)
364 * partially fixed bug #108: ROOM no longer suffers from occasional
365 (AVER (SAP= CURRENT END)) failures.
366 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
367 bodies no longer cause a WARNING to be signalled. (reported by
369 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
370 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
371 the bug in TRUNCATE.) (reported by Michael Weber)
372 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
373 no samples. (reported by Andy Hefner)
374 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
375 no longer appear as (NIL ...) frames in backtraces.
376 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
377 is now actually exported from SB-EXT as documented. (reported by
379 * bug fix: sb-aclrepl now correctly understands how to inspect
380 single-floats on 64-bit platforms where single-floats are not boxed.
381 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
382 yet been finalized. (reported by Levente Meszaros)
383 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
384 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
385 SBCL-specific optimize qualities.
387 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
388 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
389 an executable in the search path, and does so in the child
390 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
391 been removed; it can be found in the CVS history, for somebody who
392 needs that search behavior (see the manual).
393 * minor incompatible change: compiler policy re. weakening type
394 checks has changed: now type checks are weakened only if SAFETY < 2
396 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
397 unparsing of directory pathnames as files. Analogously,
398 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
399 filename to parse into a directory pathname.
400 * enhancement: implicit generic function creation now signals a
401 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
402 users can bind handlers for and muffle around calls to LOAD.
403 * enhancement: RUN-PROGRAM allows unicode arguments and environments
404 to be used (using the default stream external format), and allows
405 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
406 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
407 strings and vectors whose element-type or simplicity is not fully
408 known at compile-time.
409 * optimization: STRING-TRIM and related functions no longer allocate
410 a new string when no trimming needs to be performed. These functions
411 are also faster than before when the input string has been declared
413 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
414 * optimization: READ-LINE is significantly faster for files containing
416 * optimization: non-open coded uses of character comparison operators
417 (e.g. char=) no longer cons when called with more than one parameter
418 on platforms supporting dynamic-extent allocation.
419 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
420 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
421 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
423 * bug fix: some sequence functions elided bounds checking when
425 * bug fix: too liberal weakening of union-type checks when SPEED >
427 * bug fix: more bogus fixnum declarations in ROOM implementation
430 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
431 * new feature: MAKE-HASH-TABLE now experimentally accepts a
432 :SYNCHRONIZED argument, which makes the hash-table safe for
433 concurrent accesses (but not iteration.) See also:
434 SB-EXT:WITH-LOCKED-HASH-TABLE, and
435 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
436 * optimization: CONCATENATE on strings is an order of magnitude faster
437 in code compiled with (> SPEED SPACE).
438 * optimization: SUBSEQ is ~50% faster on lists.
439 * bug fix: bug 417 fixed -- source location reporting is now more robust.
440 * bug fix: SUBSEQ on a list will now correctly signal an error if if
441 END is smaller then START.
442 * bug fix: SB-PROFILE will no longer report extra consing for nested
443 calls to profiled functions.
444 * bug fix: ROOM implementation had bogus fixnum declarations which
445 could cause type-errors when calling ROOM on large images.
446 * bug fix: if file compilation is aborted, the partial fasl is now
447 deleted, and COMPILE-FILE returns NIL as the primary value.
448 * bug fix: number of thread safety issues relating to SBCL's internal
449 hash-table usage have been fixed.
450 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
451 be returned from its body when the values were being returned
452 using unknown-values return convection and the W-P-O was wrapped
453 inside an UNWIND-PROTECT.
454 * bug fix: sb-posix should now compile again under Windows, enabling
457 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
458 * incompatible change: hash-table accessor functions are no longer
459 automatically protected by locks. Concurrent accesses on the same hash-table
460 from multiple threads can give inconsistent results or even corrupt the
461 hash-table completely. Multi-threaded applications should do their own
462 locking at the correct granularity. In the current implementation it is
463 still safe to have multiple readers access the same table, but it's not
464 guaranteed that this property will be maintained in future releases.
465 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
466 and will signal an error at runtime.
467 * enhancement: SB-THREAD package now exports a semaphore interface.
468 * enhancement: CONS can now stack-allocate on x86 and
469 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
471 * enhancement: nested lists can now be stack allocated on
472 platforms providing stack allocation support.
473 * enhancement: dynamic-extent support has been extended to support
474 cases where there are multiple possible sources for the stack
476 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
477 if the mutex is uncontested on Linux.
478 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
479 as specified by the CLHS. (thanks to Tobias Rittweiler)
480 * bug fix: NaN comparison now works on x86-64.
481 * bug fix: CLOSE :ABORT T on a stream with pending output now
483 * bug fix: instances of non-standard metaclasses using standard
484 instance structure protocol sometimes missed the slot type checks
486 * bug fix: known functions can be inlined in high-debug code.
488 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
489 * minor incompatible change: the MSI installer on Windows no longer
490 associates .lisp and .fasl files with the installed SBCL.
491 * minor incompatible change: :UNIX is no longer present in *FEATURES*
492 on Windows. (thanks to Luis Oliviera)
493 * new feature: SB-CLTL2 contrib module now implements
494 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
495 * optimization: scavenging weak pointers is now more efficient,
496 requiring O(1) instead of O(N) per weak pointer to identify
497 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
498 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
499 method bodies using constant slot-names when the first argument is
500 a specializer parameter for the method.
501 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
502 names, when the class of the instance is a direct instance
503 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
504 as slow as the constant slot-name case.)
505 * optimization: member type construction is now O(N) instead
507 * optimization: UNION and NUNION are now O(N+M) for large
508 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
510 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
511 now more readable in environments like Slime which display it.
512 (thanks to Tobias C. Rittweiler)
513 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
514 was able to infer the correct argument type for the object on which
515 the CAS operation was being performed.
516 * bug fix: copy propagation interfered with parallel assignment
517 semantics in local calls. (reported by Paul Khuong)
518 * bug fix: the signed modular fixnum shift compiled to wrong code on
519 x86 and x86-64. (spotted by a slight modification to some of
522 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
523 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
524 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
525 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
527 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
528 and generic function now print the object identity for anonymous
529 instances. (thanks to Attila Lendvai)
530 * enhancement: as an extension to MOP, SBCL now supports SETF of
531 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
532 (thanks to Attila Lendvai)
533 * enhancement: sb-cover has an alternate annotation mode which puts
534 the form annotations at the car of the form, instead of annotating
535 it completely. The benefit of this mode is that it shows better
536 which forms were instrumented by the compiler.
537 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
538 by printer control variables. (reported by Dan Corkill)
539 * bug fix: system leaked memory when delayed output was performed by
540 the OS in smaller chunks then expected. (thanks to David Smith)
541 * bug fix: system leaked memory when file streams were not closed
543 * bug fix: large objects written to slow streams that were modified
544 after the write could end up with the modified state written to
545 the underlying file descriptor.
546 * bug fix: multiple threads operating in parallel on the same stream
547 could cause buffer-overflows.
548 * bug fix: source location information is stored correctly
549 (broken since 1.0.6). This bug would generally show up as the
550 Slime debugger highlighting the wrong form when the sldb-show-source
552 * bug fix: Branch forms are again annotated as branches in the sb-cover
554 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
555 on x86-64. (reported by Gregory Vanuxem)
556 * bug fix: EQUALP could return wrong results for structures with raw
557 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
558 word). (reported by Vjacheslav Fyodorov)
559 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
562 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
563 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
564 atomic compare-and-swap operations on threaded platforms.
565 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
566 allows assigning a global minimum value to optimization qualities
567 (overriding proclamations and declarations).
568 * enhancement: closed over variables can be stack-allocated on x86
570 * performance bug fix: GETHASH and (SETF GETHASH) are once again
572 * optimization: slot definition lookup is now O(1). This speeds up
573 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
574 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
575 * optimization: ASSOC and MEMBER can now be open-coded for all
576 combinations of keyword arguments when second argument is constant
577 and SPEED >= SPACE. In other cases a specialized version is
579 * bug fix: using obsoleted structure instances with TYPEP and
580 generic functions now signals a sensible error.
581 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
582 (reported by Kristoffer Kvello)
583 * bug fix: backtrace construction is now more careful when making
584 lisp-objects from pointers on the stack, to avoid creating bogus
585 objects that can be seen by the GC.
586 * bug fix: defaulting of values in contexts expecting more than 7
587 variables now works on x86-64. (reported by Christopher Laux)
588 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
590 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
591 as the property-list of a symbol.
592 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
593 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
594 situations requested, are once again file-compileable. (reported
597 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
598 * MOP improvement: support for user-defined subclasses of
599 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
600 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
601 the expansion of DEFMETHOD, is responsible for generating a form
602 which creates a list of specializers when evaluated. Additional
603 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
604 debugging and introspective support.
605 * minor incompatible change: the (unsupported) spinlock interface
606 has changed: free spinlock now has the value NIL, and a held spinlock
607 has the owning thread as its value.
608 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
609 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
611 * enhancement: name of a socket-stream is now "a socket" instead of
613 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
614 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
615 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
616 for generic functions. (Thanks to Tobias C. Rittweiler)
617 * optimization: bignum printing speed has been improved by 20-40%
618 (depending on the bignum size.)
619 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
621 * bug fix: the cache used by the CLOS to store precomputed effective
622 methods, slot offsets, and constant return values is now thread and
624 * bug fix: generic function dispatch function updating is now thread
625 and interrupt safe (in the sense that the known issues have been
627 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
628 * bug fix: interning EQL-specializers is now thread and interrupt safe.
629 * bug fix: asdf systems with dependencies to the SB-POSIX or
630 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
631 * bug fix: interrupt safety of applicable method computation has been
634 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
635 * new contrib: sb-cover, an experimental code coverage tool, is included
637 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
638 significantly faster.
639 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
640 produce more efficient code on x86-64 if the compiler can determine
641 that (+ INDEX <constant>) does not require a bounds check and FOO
642 has an element type at least 8 bits wide.
643 * enhancement: a new, experimental synchronous timeout facility is
644 provided. Refer to SB-SYS:WITH-DEADLINE for details.
645 * enhancement: when a symbol name conflict error arises, the
646 conflicting symbols are always printed with a package prefix.
647 (thanks to Kevin Reid)
648 * enhancement: stepping is now once again supported on the SPARC and
649 MIPS platforms. (It is also now more likely to work on CheneyGC
651 * enhancement: sb-sprof can now also track and report accurate call
653 * bug fixes: the treatment of non-standard subclasses of
654 SB-MOP:SPECIALIZER is more correct.
655 * incompatible change: PURIFY no longer copies the data from the
656 dynamic space into the static and read-only spaces on platforms
657 that use the generational garbage collector
658 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
660 * bug fix: GC race condition occasionally resulting in crashes with
661 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
663 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
665 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
666 a STYLE-WARNING to be signalled (regression from 1.0.4.)
667 * bug fix: an asynchronous interrupt could previously leave the
668 system running with GC inhibited.
669 * bug fix: a DECLARE form evaluated at top-level now causes an error
670 rather than silently (or verbosely) returning NIL.
671 * bug fix: trying to dissassemble functions compiled at high DEBUG could
672 result in a error being signalled due to source form lookup errors.
673 (reported by Peter Graves)
675 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
676 * incompatible change: removed writer methods for host-ent-name,
677 host-ent-addresses -- changing the values did not update the DNS
679 * minor incompatible change: changed experimental JOIN-THREAD interface
680 * documentation: the manual now lists reader and writer methods
681 in class slot documentation sections. (thanks to Richard M Kreuter)
682 * documentation: unwinding from asyncronous events has been
683 documented as unsafe.
684 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
685 in multithreaded application code.
686 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
687 platforms. (thanks to James Anderson for the optimization hint)
688 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
690 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
691 variants no longer cons.
692 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
693 their NOT- variants no longer cons.
694 * optimization: EQUAL hash tables no longer use SXHASH for objects
695 of all data types, but instead use an EQL hash for types for which
696 EQUAL is the same as EQL.
697 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
698 are significantly faster.
699 * optimization: new STRING-OUTPUT-STREAM implementation is much
700 faster for large outputs and conses 30% less on average.
701 * enhancement: XREF information is now collected for references made
702 to global variables using SYMBOL-VALUE and a constant argument.
703 * enhancement: SIGINT now causes a specific condition
704 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
705 * bug fix: FILE-POSITION used to signal an error in some cases where
706 ANSI requires it to return NIL.
707 * bug fix: ADJUST-ARRAY is now interrupt-safe.
708 * bug fix: adding and removing fd-handlers is now interrupt-safe.
709 * bug fix: inlined calls to C now ensure 16byte stack alignment on
711 * bug fix: bad type declaration in the CLOS implementation has
712 been fixed. (reported by James Anderson)
713 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
714 (thanks to Lutz Euler)
715 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
716 required by the CLHS. (reported by Samium Gromoff)
717 * bug fix: dead unbound variable references now signal an error.
718 (reported by Marco Monteiro)
719 * bug fix: / with an unused value was being deleted in safe code.
720 (thanks to Marco Monteiro and Kevin Reid)
721 * bug fix: number of characters that can be written onto a single
722 line in a file is unlimited.
723 * bug fix: some GC deadlocks caused by asynchronous interrupts have
724 been fixed by inhibiting interrupts for when GC is disabled.
725 * bug fix: some interrupt safety issues with GETHASH, (SETF
726 GETHASH), CLRHASH and REMHASH have been fixed.
727 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
728 specifier no longer causes infinite recursion.
729 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
730 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
731 * bug fix: an &environment argument with the correct variable information
732 is passed to macros that are expanded during byte compilation.
733 (reported by Samium Gromoff)
734 * bug fix: a logic error was causing the hash function for bignums to
735 have excessive amounts of collisions. (reported by Faré Rideau)
736 * bug fix: modifying the contents of an array could change the return
737 value of SXHASH on that array, which is only allowed for strings
738 and bit vectors. (bug introduced in 0.9.16)
739 * improvement: the x86-64/darwin port now passes all tests (except
740 for the debugger tests) but should still be considered
741 experimental until this is fixed.
742 * improvement: a style-warning is signaled for CASE (etc) clauses with
743 duplicate keys. (thanks to Kevin Reid)
744 * improvement: macos/x86 and macos/x86-64 now use mach exception
745 handlers for dealing with illegal instructions (for trapping and
746 error handling) and memory protection violations (for GC).
748 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
749 * new platform: experimental support for x86-64/darwin (MacOS).
750 * incompatible change: the thread-safe (on most platforms) getaddrinfo
751 and getnameinfo sockets functions are used instead of gethostbyaddr
752 and gethostbyname, on platforms where the newer functions are available.
753 As a result, the ALIASES field of HOST-ENT will always be NIL on these
755 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
756 don't print the startup banner, but behave as if --noinform was passed
757 as a command line argument. (thanks to Kevin Reid)
758 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
759 * optimization: code using alien values with undeclared types is much faster.
760 * optimization: the compiler is now able to open code SEARCH in more cases.
761 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
762 * bug fix: using standardized COMMON-LISP special variables as loop
763 variables no longer signals bogus package lock violations. (reported
765 * bug fix: declaring local loop variables to be of a range-limited type
766 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
767 (reported by Andras Simon)
768 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
769 bugs remain on x86-64.)
770 * bug fix: the #= and ## reader macros now interact reasonably with
771 funcallable instances.
772 * bug fix: type-checks for function arguments were compiled using the
773 compiler policy settings of the wrong lexical environment (in 1.0.2
775 * bug fix: SHADOW accepts characters as string designators, as required
776 by the spec (thanks to Eric Marsden)
777 * bug fix: fixed GC safety issues when foreign functions are called with
778 non-base strings as arguments
779 * bug fix: more consistent error output for fatal-compiler-warnings, like
781 * bug fix: functions with proper names were showing up as NIL in
782 backtraces (reported by Edi Weitz, regression in 1.0.2)
784 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
785 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
786 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
787 produce more efficient code on the x86 if the compiler can determine
788 that (+ INDEX <constant>) does not require a bounds check and FOO
789 has an element type at least 8 bits wide.
790 * bug fix: references to undefined variables are handled the same way
791 in toplevel forms as in the normal compiler
792 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
794 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
795 (thanks to Jon Buller)
796 * improvement: faster compilation times for complex functions
797 * improvement: added readlink support to SB-POSIX (thanks to Richard
800 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
801 * improvement: experimental support for mach exception handling on
802 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
804 * improvement: support for GBK external format.
805 (thanks to Chun Tian (binghe))
806 * improvement: the debugger now displays variables that have been closed
807 over, in code compiled with (DEBUG 2) or higher
808 * improvement: support for executable cores on NetBSD (thanks to
810 * new feature: added a RESTART-FRAME debugger command
811 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
812 be used to provide an implementation for FILE-POSITION on Gray streams
813 (thanks to Eric Marsden)
814 * new feature: add syslog, openlog and closelog support to SB-POSIX
815 (thanks to Richard Kreuter)
816 * optimization: the function call overhead in code compiled with
817 a high DEBUG optimization setting is significantly
818 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
819 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
820 (thanks to Tony Martinez)
821 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
822 evaluated once (reported by Kevin Reid)
823 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
824 works again (thanks to Kilian Sprotte)
825 * bug fix: an error is signaled for tagbodies with duplicate tags
826 (thanks to Stephen Wilson)
827 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
828 * bug fix: Win32 port can now handle foreign code unwinding Lisp
829 stack frames from alien callbacks.
830 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
831 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
832 65k pages (thanks to David Woodhouse)
833 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
835 changes in sbcl-1.0.1 relative to sbcl-1.0:
836 * new platform: FreeBSD/x86-64, including support for threading.
837 * new feature: the compiler stores cross-referencing information
838 about function calls (who-calls), macroexpansion (who-macroexpands)
839 and special variables (who-binds, who-sets, who-references) for code
840 compiled with (< SPACE 3). This information is available through the
841 sb-introspect contrib.
842 * new feature: users may subclass SEQUENCE, and have instances of
843 these classes interoperate with standard Common Lisp functions if
844 a number of methods are defined. (This feature is experimental
845 and the interface subject to change based on feedback from SBCL
846 users and the general community)
847 * improvement: sb-sprof traces call stacks to an arbitrary depth on
848 x86/x86-64, rather than the previous fixed depth of 8
849 * improvement: another pthread back-end of mutex "pthread-futex".
850 * bug fix: non-ascii command-line arguments are processed correctly
851 (thanks to Yaroslav Kavenchuk)
852 * bug fix: non-required arguments were not passed correctly when a method
853 defined using DEFMETHOD was called from a mop-generated method using
854 CALL-NEXT-METHOD (reported by Pascal Costanza)
855 * bug fix: recursion is now permitted in accessors through
856 SLOT-UNBOUND. (reported by Pascal Costanza)
857 * bug fix: an error was signaled at startup if the HOME environment
858 variable was defined, but had an empty value (reported by Peter Van Eynde)
859 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
860 signal a PROGRAM-ERROR, not a BUG.
861 * bug fix: SB-POSIX:READDIR works when built with large file support.
862 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
864 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
865 for better automatic indentation support. (thanks to Matt Pillsbury)
866 * optimization: loading generic functions no longer takes O(n^2) time,
867 proportional to the amount of methods in the generic function
868 (reported by Todd Sabin and Jeremy Brown)
869 * optimization: the FIND and POSITION family of sequence functions
870 are significantly faster on arrays whose element types have been
872 * improvements to the Windows port:
873 ** Intermittent heap corruption problems have been fixed. (thanks
874 to Alastair Bridgewater)
875 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
877 ** Lisp is able to unwind foreign exception frames from alien
878 callbacks. (thanks to Alastair Bridgewater)
880 changes in sbcl-1.0 relative to sbcl-0.9.18:
881 * improvement: experimental support for threading on FreeBSD/x86.
882 (thanks to NIIMI Satoshi)
883 * improvement: runtime option --dynamic-space-size can be used
884 to set the size of the dynamic space reserved on startup.
885 * improvement: floating point modes in effect are now saved in
886 core, and restored on startup.
887 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
888 startup, not time since first call to GET-INTERNAL-REAL-TIME.
889 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
890 threads are not running after *SAVE-HOOKS* have run.
891 * improvement: writes to CLOS instance slots are type-checked in code
892 compiled with (SAFETY 3)
893 * improvement: floating-point exception handling on FreeBSD (thanks to
895 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
896 (thanks to Zach Beane)
897 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
899 * improvement: added support for the Shift-JIS external format.
900 (contributed by NIIMI Satoshi)
901 * improvement: callbacks are supported on Linux/PPC. (thanks to
903 * bug fix: compiler bug triggered by a (non-standard) VALUES
904 declaration in a LET* was fixed. (reported by Kaersten Poeck)
905 * bug fix: file compiler no longer confuses validated and already
906 dumped structurres. (reported by Kaersten Poeck)
907 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
908 fill-pointer signals a type-error as required. (thanks to
910 * bug fix: disassemly of funcallable instances works.
911 * bug fix: single stepping on PPC.
912 * bug fix: fix thread-safety problems in the type system (generally
913 manifesting as nonsensical errors like "STRING is a bad type specifier
914 for sequences" or "The value 1 is not of type FIXNUM")
915 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
916 (reported by Josip Gracin)
917 * bug fix: an error is signaled for attempts to displace arrays with
918 incompatible element types (thanks to Mario Mommer)
919 * bug fix: more correct handling of wide characters in debug info
920 (bug reported by Attila Lendvai and fixed by Juho Snellman)
921 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
922 and don't cause extra consing
923 * optimization: MAP and MAP-INTO are significantly faster on vectors
924 whose elements types have been declared.
925 * Improvements to SB-SPROF:
926 ** Support for allocation profiling
927 ** Reduced profiling overhead, especially for long profiling runs
928 * Improvements to the Windows port:
929 ** floating point exceptions are now reported correctly.
930 ** stack exhaustion detection works partially.
931 ** more accurate GET-INTERNAL-REAL-TIME.
932 ** better RUN-PROGRAM behaviour in case of errors in the child
934 ** PROBE-FILE now simplifies pathnames correctly.
935 ** DIRECTORY now works correctly with :WILD-INFERIORS.
936 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
937 1st 1970 (although time timezone data will be unreliable).
938 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
940 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
941 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
942 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
944 * bug fix: two potential GC deadlocks affecting threaded builds.
945 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
946 returns T (reported by Anton Kazennikov)
947 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
948 with non-variable places
949 * bug fix: remove a race condition in the setting of
950 funcallable-instance functions, this should make threaded CLOS
951 code more stable against memory faults.
952 * bug fix: corruption of specials when unbinding is interrupted by an
953 asynchronous unwind (reported by Hannu Koivisto)
954 * improvement: the debugger will now also display local variables that
955 are only used once, for code compiled with a DEBUG optimization quality
958 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
959 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
960 * incompatible change: External-format support for FFI calls. The
961 SB-ALIEN:C-STRING no longer implies an ASCII
962 external-format. Instead the string is subject to external-format
963 conversion. Additionally return values of type SB-ALIEN:C-STRING
964 are by default of type (SIMPLE-ARRAY CHARACTER), not
965 SIMPLE-BASE-STRING. For an alien type that behaves like the old
966 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
967 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
968 * incompatible change: SB-EXT package no longer contains the
969 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
970 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
972 * incompatible change: the single-stepper is no longer available
973 on Alpha, Mips and Sparc platforms.
974 * minor incompatible change: the direct superclasses of
975 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
976 not (STANDARD-OBJECT FUNCTION). This makes the
977 class-precedence-lists of GENERIC-FUNCTION and
978 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
980 * minor incompatible change: the default stream external format on
981 non-unicode SBCL is no longer detected from the locale, but is always
983 * new feature: Add a version of evaluator that uses an interpreter instead
984 of the compiler. EVAL still uses the compiler by default, to switch it
985 to use the interpreter, set the value of the variable
986 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
987 * minor incompatible change: the single-stepper REPL has been merged
988 with the normal debugger (see the "Stepping" heading of the debugger help
989 for more details). The debugger command STEP will no longer switch
990 to the single-stepper REPL.
991 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
992 for a type now works.
993 * bug fix: loading of default sysinit file works. (thanks to Leonid
995 * bug fix: better detection of circularities in the file-compiler.
996 (reported by Marco Monteiro)
997 * bug fix: the CL pathname functions now work with files that have
998 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
999 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1000 systems with Unix98 pty semantics.
1001 * bug fix: ASDF-INSTALL will now work with bsd tar.
1002 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1004 * bug fix: timers expiring in dead threads no longer cause a
1005 type-error (reported by Paul "Nonny Mouse").
1006 * bug fix: thanks to more lightweight single-stepper instrumentation,
1007 code compiled with (DEBUG 3) will compile and execute significantly faster,
1008 and will have more accurate type-inferencing than before
1009 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1010 whose bindings are modified
1011 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1012 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1013 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1014 CL:SOFTWARE-VERSION with proper version
1016 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1017 * feature: implemented the READER-METHOD-CLASS and
1018 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1019 as specified by AMOP.
1020 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1022 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1023 (thanks to Lutz Euler)
1024 * optimization: hashing of general arrays and vectors has been
1025 improved. (reported by Any Fingerhut)
1026 * enhancement: SB-INTROSPECT is now able to find definitions of
1027 profiled functions. (thanks to Troels Henriksen)
1028 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1029 as well, allowing compiler-macros for SETF-functions to expand.
1030 * enhancement: step-instrumentation no longer wraps known
1031 single-value functions with multiple-value context, allowing
1032 better type inference.
1033 * fixed bug #337: use of MAKE-METHOD in method combination now works
1034 even in the presence of user-defined method classes. (reported by
1035 Bruno Haible and Pascal Costanza)
1036 * fixed bug #339(c): if there are applicable methods not part of any
1037 long-form method-combination group, call INVALID-METHOD-ERROR.
1038 (reported by Bruno Haible)
1039 * fixed bug #361: the :FUNCTION initarg in the protocol for
1040 initialization of methods can now be used to override
1041 internally-produced optimized functions. (reported by Bruno
1043 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1044 system-provided lambda expression no longer cause warnings about
1045 unbound #:|pv-table| symbols.
1046 * bug fix: improved the handling of type declarations and the
1047 detection of violations for keyword arguments with non-constant
1049 * bug fix: potentially erronous calls to PATHNAME and
1050 MERGE-PATHNAMES were being flushed in some cases.
1051 (reported by Richard Kreuter)
1052 * bug fix: compiled calls to TYPEP were mishandling obsolete
1053 instances. (reported by James Bielman and Attila Lendvai)
1054 * bug fix: format strings with ~> without matching ~< no longer
1055 trigger an AVER, but signal an understandable error instead.
1056 (reported by Antonio Martinez)
1057 * bug fix: specifying an output-file without a pathname-type for
1058 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1059 of input-file instead of "fasl". (reported by Robert Dodier)
1060 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1061 (reported by James Y Knight).
1062 * bug fix: compiler-macros-function did not consider the environment
1063 argument for shadowing by local functions.
1064 * bug fix: compiler-macros expansion was inhibited by local INLINE
1066 * bug fix: inline expansions of known functions were subject to
1067 step-instrumentation in high debug policies, leading to problems
1068 with type-inference.
1069 * bug fix: compiler failed to differentiate between different CONS
1070 types in some cases.
1071 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1072 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1073 * bug fix: #368: incorrect use of expressed vs. upgraded array
1075 * bug fix: #306a: more precise unions of array types.
1076 * thread-safety improvements:
1077 ** CONDITION-WAIT could return early on Linux, if the thread was
1078 interrupted and subsequently continued with SIGCONT.
1079 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1081 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1082 * added support for the ucs-2 external format. (contributed by Ivan
1084 * minor incompatible change: pretty printing of objects of type
1085 (cons symbol) is, in the default pprint-dispatch-table, now
1086 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1088 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1089 called later in a class's lifetime, possibly as late as when the
1090 first instance of the class is created. Previously,
1091 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1092 class became finalizeable.
1093 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1094 for multibyte external-format streams. (thanks to "vbzoli")
1095 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1096 with :ALLOCATION :CLASS inherited from superclasses of the
1098 * fixed bug: anonymous classes can now be created using the :NAME
1099 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1100 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1101 * fixed bug: core-files saved with :EXECUTABLE T can again be
1102 executed when SBCL_HOME isn't set. (reported by James Knight)
1103 * fixed bug: toplevel LOCALLY forms with declarations could
1104 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1105 * fixed bug: printing from several different threads using different
1106 values of *print-case* could cause invalid output, due to
1107 some internal special variables of the printer not being bound
1108 thread-locally (reported by Max Mikhanosha)
1109 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1110 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1111 (reported by Pascal Costanza)
1112 * fixed bug: FINALIZE-INHERITANCE is called from
1113 REINITIALIZE-INSTANCE on classes when the class has previously
1114 been finalized, as required by AMOP.
1115 * minor code generation optimizations:
1116 ** better register allocation in CLOS dispatching functions
1117 ** overflow detection when coercing signed bytes to fixnums on x86-64
1118 ** is now implemented with one IMUL instruction instead of three shifts
1119 ** more efficient bit-vector access on x86 and x86-64
1120 ** more efficient access to raw structure slots on x86 and x86-64
1121 * fixed some bugs revealed by Paul Dietz' test suite:
1122 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1123 return its argument.
1125 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1126 * feature: thread support on Solaris/x86, and experimental thread support
1128 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1130 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1131 default method for SLOT-UNBOUND.
1132 * minor incompatible change: prevent the user from specializing the
1133 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1134 somewhat counter to the intent of the protocol, I (CSR) think, and
1135 additionally it just doesn't work in SBCL as currently
1136 implemented, thanks to optimizations (that are always valid for
1137 the other three SLOT-VALUEish functions, but not for the setter).
1138 * minor incompatible change: the :SB-LDB feature is now enabled by
1139 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1140 the low-level debugger.
1141 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1142 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
1143 down to an SB-SYS:FD-STREAM, allowing direct communication in
1144 more cases. Temporary files and pipes are still used as a fallback
1146 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1147 on the non-reentrant C functions localtime(3) and gmtime(3).
1148 * bug fix: global optimization policy was not visible in LOCALLY and
1150 * bug fix: class objects can be used as specializers in methods.
1151 (reported by Pascal Costanza)
1152 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1153 with a type error. (reported by blitz_ on #lisp)
1154 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1155 failed with a type error. (reported by Pascal Bourguignon)
1156 * bug fix: merging pathnames against defaults with :DIRECTORY
1157 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1158 (reported by James Y Knight)
1159 * bug fix: saving large (>2GB) cores on x86-64 now works
1160 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1161 constant index and a (simple-array (signed-byte 32)) array
1162 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1163 error (patch by Robert J. Macomber)
1164 * feature: TIME now displays the amount of run-time spent in GC
1165 * bug fix: The debugger now does a better job of respecting
1166 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1167 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1168 workaround for bug 403.)
1169 * bug fix: floating point exception handling now works on FreeBSD
1170 (thanks to NIIMI Satoshi)
1171 * fixed some bugs revealed by Paul Dietz' test suite:
1172 ** MISC.641: LET-conversion were not supposed to work in late
1174 * improvements to the Win32/x86 port:
1175 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1176 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1178 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1179 * new feature: source path information is generated for macro-expansion
1180 errors for use in IDE's like Slime (thanks to Helmut Eller)
1181 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1182 * bug fix: compiler does not loop forever on an invalid type in
1184 * improvement: compilation of most CLOS applications is significantly
1186 * optimization: added a limited bytecode compiler for simple toplevel
1187 forms, speeding up compilation and FASL loading
1188 * bug fix: the statistical profiler now properly distinguishes anonymous
1191 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1192 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1193 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1194 into subclasses of the finalized class. Now user calls to
1195 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1196 system return before any subclasses are finalized.
1197 * minor incompatible change: The reader no longer ignores errors
1198 regarding non-existent packages in #+ and #- feature tests.
1199 * new feature: command line options --no-sysinit, --no-userinit to
1200 inhibit loading the corresponding init files
1201 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1202 for sending data through UDP sockets (thanks to François-René Rideau)
1203 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1204 error is signalled instead (thanks to François-René Rideau)
1205 * minor incompatible change: Error signalling behaviour of lexical
1206 operations violating package locks has changed slightly. Refer to
1207 documentation on package locks for details.
1208 * enhancement: EVAL can process IF-expressions without resorting to the
1210 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1211 constant-folded properly due to missing out-of-line functions.
1212 (reported by Mika Pihlajamäki)
1213 * bug fix: LISTEN sometimes returned T even in cases where no data was
1214 immediately available from the stream
1215 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1216 were reversed. (reported by Levente Mészáros)
1217 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1218 when given a vector displaced to an adjustable array. (reported
1220 * bug fix: derivation of float boundaries from numbers outside the
1221 appropriate float range (reported by John Wiseman)
1222 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1224 * bug fix: precomputing cache entries for generic functions with
1225 some subclasses of specializers as yet invalid does not attempt to
1226 fill a cache line with a negative offset. (reported by Levente
1228 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1229 allow condition class objects as arguments to DOCUMENTATION and
1230 (SETF DOCUMENTATION); only find and set documentation for
1231 structure names for the STRUCTURE doc-type. (suggested by Gary
1233 * improvements to the Win32/x86 port:
1234 ** (user-homedir-pathname) and default initialization file
1235 locations now know about the user's "Documents and Settings"
1236 directory (thanks to Yaroslav Kavenchuk)
1237 ** run-program is implemented (thanks to Mike Thomas)
1238 ** sockets support (thanks to Timothy Ritchey)
1239 ** better backtrace support (thanks to Alastair Bridgewater)
1240 ** sb-grovel supported
1241 ** asdf-install and sb-posix work somewhat
1242 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1243 * improvements to the Solaris/x86 port:
1244 ** works on Solaris 11/Solaris Express
1245 ** floating-point exception handling support
1246 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1247 * fixed some bugs revealed by Paul Dietz' test suite:
1248 ** REMOVE-METHOD returns its generic function argument even when
1249 the method is not one of the generic functions' methods.
1250 ** objects declared as MEMBER types can be admissible arguments to
1251 structure accessors.
1252 ** printing characters should simply be printed by the FORMAT ~:C
1254 ** compiler failure when compiling functions with hairy constant
1255 defaults for optional parameters.
1256 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1257 function, which is already optimized.
1259 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1260 * new platform: experimental support for SBCL x86/Darwin, including
1261 MacOS X 10.4.5 on Intel.
1262 * new feature: Unicode character names are now known to the system
1263 (through CHAR-NAME and NAME-CHAR).
1264 * new feature: the filesystem location of SBCL's core file is
1265 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1266 * minor incompatible change: the contrib modules SB-POSIX and
1267 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1268 this change is to make it easier to distribute
1269 location-independent binaries.
1270 * bug fix: as implied by AMOP, standardized classes no longer have
1271 slots named by external symbols of public packages. (reported by
1273 * optimization: calling functions via constant symbols -- as in
1274 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1275 via the function object as in (FUNCALL #'FOO).
1276 * optimization: on x86 and x86-64, the calling convention for the
1277 case of dealing with an unknown number of values has been altered
1278 to be friendlier to the prediction heuristics implemented,
1279 particularly with reference to CALL and RET pairing. (thanks to
1280 Alastair Bridgewater)
1281 * optimization: on x86, the code for access to thread-local symbol
1282 values and binding/unbinding of thread-local symbols is smaller.
1283 (thanks to Alastair Bridgewater)
1284 * enhancement: CONSTANTP is now able to determine constantness of
1285 more complex forms, including calls to constant-foldable standardized
1286 functions and some special forms beyond QUOTE.
1287 * fixed bug: occasional GC crashes on Solaris/x86
1288 * optimization: x86-64 supports stack allocation of results of simple
1289 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1290 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1291 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1292 (thanks to James Knight)
1293 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1294 by the standard (thanks to Stephen Compall)
1296 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1297 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1298 be used for bundling the runtime and the core file into one
1299 executable binary. This feature is not currently supported on all SBCL
1300 platforms. (thanks to James Bielman and NIIMI Satoshi)
1301 * new feature: a generational or ephemeral garbage collector is now
1302 the default on the PowerPC platform (both Linux and Darwin). The
1303 old Cheney (stop and copy) collector is a build-time option.
1304 (thanks to Cyrus Harmon, after Raymond Toy)
1305 * minor incompatible change: the method by which SBCL finds its
1306 contributed modules has changed; it no longer relies on symbolic
1307 links from an $SBCL_HOME/systems directory, but searches directly
1308 in the subdirectories of $SBCL_HOME.
1309 * enhancement: the dynamic heap size on the Linux/PPC platform is
1310 markedly larger, even using the older Cheney garbage collector.
1311 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1312 certain complicated string types. (reported by Gary King)
1313 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1314 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1315 * fixed bug: DOCUMENTATION on structures no longer signals an
1316 error if no structure type of the right name exists. (reported by
1318 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1319 applicable non-standard primary or :AROUND method on
1320 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1321 no longer cause unbound variable errors. (reported by Kevin Reid)
1322 * fixed bug: metacircle resolution in cases where methods have slots
1323 added before the slots from STANDARD-METHOD. (reported by Jean
1325 * fixed bug: the Power PC assembly code for calling into lisp
1326 sometimes computed its return address wrongly (depending on the
1327 15th bit of the address, fixed at link time). This used to
1328 manifest itself in a segmentation violation while building PCL.
1329 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1330 many others over the years)
1331 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1332 the stack pointer (treated as a signed integer) is negative.
1333 (thanks to Peter van Eynde)
1335 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1336 * new platform: experimental support for the Windows operating
1337 system has been added. (thanks to Alastair Bridgewater)
1338 * fixed several bugs in and robustified the PPC FFI (including
1339 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1340 * bug fix: allow non-simple string symbol names (reported by Paul
1342 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1344 * bug fix: saving a core corrupted callbacks on x86/x86-64
1345 * bug fix: closed a loophole in metacircularity detection and
1346 grounding in the PCL implementation of CLOS.
1347 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1348 (reported by tomppa on #lisp)
1349 * bug fix: clear the direction flag on Lisp -> C transitions, as
1350 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1351 (reported by Andrej Grozin and Hendrik Maryns)
1352 * optimization: major improvements to GC efficiency on GENCGC platforms
1353 * optimization: faster implementation of EQUAL
1354 * optimization: emit more efficient opcodes for some common
1355 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1356 * optimization: several other minor code-generation improvements on x86-64
1357 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1359 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1360 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1361 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1362 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1363 by ANSI as a generic function, and for consistency (SETF
1364 GENERIC-FUNCTION-NAME) is treated likewise.
1365 * fixed bug #233.b: make constraint propagation notice when a variable
1366 value is changed after it is referenced but before it is used
1367 * fixed bug #296: no more arbitrary behaviour from filenames with
1368 odd characters as --load arguments. (reported by Adam Warner)
1369 * fixed bug #390: :CHARACTER-SET pathname components now work as
1370 expected. (reported by Tim Daly Jr)
1371 * fixed bug #391: complicated :TYPE intersections in slot
1372 definitions no longer cause an error in PCL internals.
1373 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1374 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1375 returning the number of octets which would be written to the
1376 file-stream. (thanks to Robert J. Macomber)
1377 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1378 arguments to the internal stream functions. (thanks to David
1380 * bug fix: stack exhaustion is now handled on the x86/SunOS
1381 platform. (thanks to Daisuke Homma)
1382 * bug fix: more accurate ROOM results on GENCGC platforms
1383 * optimization: improved type inference for arithmetic-for
1384 index variables in LOOP
1385 * optimization: faster floating-point SQRT on x86-64
1386 * fixed some bugs revealed by Paul Dietz' test suite:
1387 ** DOCUMENTATION returns NIL instead of "" for method combinations
1388 that don't have a docstring
1390 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1391 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1392 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1393 therefore are not customizeable by user code (as seems to be at
1394 least permitted and maybe required by AMOP). As a consolation,
1395 however, the SBCL implementation of these functions now calls
1396 REINITIALIZE-INSTANCE as specified by AMOP.
1397 * bug fix: slot-definition documentation is propagated as per ANSI
1398 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1399 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1400 argument, as do eslotd initialization methods. (from Pascal
1401 Costanza's "Closer" project)
1402 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1403 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1405 * bug fix: it is now possible to have more than one subclass of
1406 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1407 (reported by Bruno Haible, Pascal Costanza and others)
1408 * bug fix: the dependent update protocol now works for generic
1409 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1410 and Pascal Costanza)
1411 * bug fix: condition-class instances corresponding to
1412 DEFINE-CONDITION forms are now created eagerly. (reported by
1413 Kalle Olavi Niemitalo on comp.lang.lisp)
1414 * bug fix: floating point printing is more accurate in some
1415 circumstances. (thanks to Simon Alexander)
1416 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1417 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1418 * bug fix: callbacks on OS X now preserve stack-alignment.
1419 (thanks to Cyrus Harmon)
1420 * enhancement: the x86-64 disassembler is much better at
1421 disassembling SSE instructions. (thanks to Lutz Euler)
1422 * enhancement: CHECK-TYPE on a variable now allows type-inference
1423 (thanks to Vincent Arkesteijn)
1424 * optimization: improved performance of EUC-JP external format.
1425 (thanks to NIIMI Satoshi)
1426 * optimization: performance improvements to IO on file streams of
1427 :ELEMENT-TYPE CHARACTER
1428 * optimization: much faster memory allocation on x86-64
1429 * optimization: faster garbage collections (latency and throughput)
1431 * optimization: faster bignum subtraction and division on x86 and x86-64
1432 (thanks to Lutz Euler)
1433 * optimization: more accurate type-inference for loops that use a
1434 floating point index variable or a negative step.
1436 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1437 * bug fix: add a workaround to SBCL looping infinitely at startup on
1438 Linux kernels with apparently buggy implementations of personality().
1439 (thanks to Svein Ove Aas)
1440 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1441 (thanks to David Lichteblau)
1442 * bug fix: local bindings shadow global symbol macros for
1443 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1444 * optimization: non-open coded uses of numeric comparison operators
1445 (e.g. >) no longer cons when called with more than one parameter
1446 on platforms supporting dynamic-extent allocation.
1447 * enhancement: saving cores with foreign code loaded is now supported
1448 on MIPS/Linux in addition to the previously supported platforms.
1449 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1450 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1451 * bug fix: division by zero in sb-sprof when no samples were collected
1452 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1453 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1454 (thanks to Alexander Kjeldaas)
1455 * new feature: ignoring the return values of destructive functions
1456 like NREVERSE signals a compile-time style-warning.
1457 (thanks to Kevin Reid)
1458 * new feature: the alignment of alien structure fields can be
1459 explicitly specified. (thanks to Cyrus Harmon)
1460 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1461 and dump core on SIGQUIT
1463 ** incompatible change: threads do not inherit values of specials
1464 from their parents (see manual)
1465 ** bug fix: threads stacks belonging to dead threads are freed by the
1466 next exiting thread, no need to gc to collect thread stacks anymore
1467 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1468 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1469 ** bug fix: dynamic variable and thread start related gc lossage
1470 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1472 * fixed some bugs revealed by Paul Dietz' test suite:
1473 ** SUBTYPEP is slightly more accurate on heinously complicated
1474 CONS types where some of the members have uncertain (in the
1475 NIL, NIL sense) type relationships to each other.
1477 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1478 no longer purified unless :PURIFY T is explicitly specified.
1479 ** Non-purified cores are significantly smaller than before
1481 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1482 * new feature: timers based on Zach Beane's excellent timer package
1483 * added support for the following external formats: koi8-u,
1484 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1485 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1486 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1487 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1488 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1489 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1490 * incompatible change: a threaded SBCL will no longer revert to
1491 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1492 * bug fix: interrupts are disabled until startup is complete; no
1493 more sigsegvs when receiving a signal to soon
1494 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1496 * bug fix: add a workaround for the memory randomization features in
1497 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1498 workaround will only be in effect on systems with the proc filesystem
1500 * bug fix: printing objects of type HASH-TABLE signals a
1501 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1503 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1504 have been running for over 50 days. (reported by Gilbert Baumann)
1505 * bug fix: the logic for getting names of functions gets less
1506 confused when confronded with alternate-metaclass
1507 funcallable-instances. (reported by Cyrus Harmon)
1508 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1509 consistent, even on internal alternate-metaclass objects.
1510 * bug fix: flush closure information collected by physical
1511 environment analysis prepass before the main pass. (bug reported
1513 * bug fix: compiler pack phase does not modify a hashtable, which is
1514 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1515 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1516 may be expanded. (reported by Alexander <malishev> on c.l.l)
1517 * bug fix: no more style-warnings when compiling code using LAST
1518 under high-SPEED low-SPACE settings. (reported by David Wallin
1520 * fixed some incompatibilities between SBCL's MOP and the MOP
1522 ** the METAOBJECT class is now implemented;
1523 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1524 STANDARD-OBJECT, as required;
1525 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1526 now compatible (as required by VALIDATE-SUPERCLASS); there
1527 remains a consistency requirement over the presence or absence
1528 of the FUNCTION class in the superclass list of finalized
1529 classes; see the manual for more details;
1530 ** the :AROUND method for COMPUTE-SLOTS on
1531 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1532 requested slot ordering.
1534 ** bug fix: parent thread now can be gc'ed even with a live
1536 ** bug fix: binding a special with PROGV to no value is not
1537 the same as that symbol not having been bound (thanks to
1539 ** bug fix: binding specials is thread safe (thanks to
1541 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1542 and SB-SPROF do not die with 'no handler for signal XX in
1543 interrupt_handle_now(..)' anymore
1544 ** bug fix: WITH-TIMEOUT works with multiple running threads
1545 * fixed some bugs revealed by Paul Dietz' test suite:
1546 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1547 the :method-class keyword argument.
1549 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1550 * new port: the Solaris operating system on x86 processors is now
1551 mostly supported, though some rough edges in the environment
1552 remain. (thanks to Daisuke Homma)
1553 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1554 space for its heap. (thanks to Thiemo Seufer)
1555 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1556 closures. (thanks to Thiemo Seufer)
1557 * minor incompatible change: eof selects abort in the debugger.
1558 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1559 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1561 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1562 deprecated, and will go away in a future revision of SBCL.
1563 * minor incompatible change: GC-ON and GC-OFF are no longer
1564 implemented with a counter, it does not matter how many times gc
1565 is switched on or off
1566 * bug fix: discriminating functions for generic function classes
1567 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1568 make invalid assumptions about method precedence order. (reported
1570 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1571 platforms. (thanks to Thiemo Seufer)
1572 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1573 * bug fix: correct pathname printing with printer escaping is on.
1574 (thanks to Kevin Reid)
1575 * bug fix: complex VOP definitions in "user-space" no longer trigger
1576 package locks. (reported by Zach Beane)
1577 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1578 for funcallable-instance functions, and is no different from
1580 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1581 characters in the current readtable. (reported by Nicholas Neuss)
1582 * bug fix: SUBTYPEP on various CONS types returns more a more
1583 accurate acknowledgment of its certainty.
1584 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1585 lists in some cases. This partially fixes bug 384.
1586 * flush all standard streams before prompting in the REPL and the
1588 * bug fix: signal handling and triggering gc do not conflict
1589 directly anymore, in particular a high frequency sb-sprof does
1590 not prevent gc from running
1591 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1592 approximation for timezone and DST information between the
1593 universal time epoch and the smallest negative 32-bit time_t.
1594 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1595 year 1899 so long as the encoded time is non-negative.
1596 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1597 the correct answer for non-constant rotate amounts when performing
1598 an inline 32-bit rotation.
1600 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1601 there is only one thread in the session
1602 ** bug fix: memory leak for streams created in one thread and
1603 written to in another
1604 ** bug fix: lockup when compiled with gcc4
1605 ** bug fix: race that allows the gc to be triggered when gc is
1607 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1608 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1610 ** bug fix: finished threads are gc'ed properly
1611 * fixed some bugs revealed by Paul Dietz' test suite:
1612 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1613 has arguments with a different set of applicable methods from
1614 the orignal arguments.
1615 ** The type error thrown by MAP now has a correct expected-type
1617 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1618 name a compiled function.
1619 ** Three MISC tests where a large bignum was improperly coerced to
1620 a float that couldn't represent that bignum during type
1621 derivation were fixed.
1622 ** SUBTYPEP can now handle types involving the negation of a
1623 list-form FUNCTION type.
1624 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1625 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1626 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1628 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1629 * New feature: Experimental support for bivalent streams: streams
1630 opened with :element-type :default now allow character and binary
1631 (unsigned-byte 8) I/O
1632 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1633 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1635 * bug fix: no more highly sporadic "couldn't check whether ~S is
1636 readable" when reading a stream and an interrupt hits in the middle
1637 of a select system call
1638 * compiler better recognizes complex arrays (reported by Eduardo
1640 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1641 for variables on SBCL built with linkage-tables. (reported by Luis
1643 * various error reporting improvements.
1644 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1645 (Thanks to Thiemo Seufer)
1646 * bug fix: nested reader invokations work correctly
1647 * bug fix: it is possible to have simultaneous references to foreign
1648 code and foreign data with the same name.
1650 ** added x86-64 support
1651 ** incompatible change: the threading api now works with thread
1652 objects instead of thread ids
1653 ** bug fix: threads are protected from signals and interruption when
1654 starting up or going down
1655 ** bug fix: a race where an exiting thread could lose its stack to gc
1656 ** bug fix: don't halt on infinite error in threads if possible
1657 ** fixed numerous gc deadlocks introduced in the pthread merge
1658 ** bug fix: fixed thread safety issues in read and print
1659 ** bug fix: debugger doesn't hang on session lock if interrupted at
1660 an inappropriate moment
1661 ** bug fix: run-program is now thread safe(r)
1662 ** bug fix: inner with-recursive-lock no longer releases the mutex
1663 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1664 * fixed some bugs revealed by Paul Dietz' test suite:
1665 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1666 EXPECTED-TYPE slots filled.
1667 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1669 ** MAKE-CONDITION accepts classes as type-designators.
1670 ** COMPILE may never return NIL.
1671 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1672 range before calling Unix time functions
1674 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1675 * numerous signal handling fixes to increase stability
1676 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1677 * minor incompatible change: we now correctly canonize default
1678 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1679 as per the MOP, rather than the historical (INITARG INITFUNCTION
1680 INITFORM). (reported by Bruno Haible)
1681 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1682 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1683 for more information.
1684 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1685 pathname is a directory pathname.
1686 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1687 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1689 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1690 :METACLASS argument in addition to a class name. (reported by
1691 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1692 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1693 (reported by Bruno Haible; patch from Gerd Moellmann)
1694 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1696 * bug fix: more cleanups to the floating point exception handling on
1697 x86-64 (thanks to James Knight)
1698 * bug fix: the compiler does not try to constant fold calls of
1699 COERCE and BIT-* functions when they return freshly constructed
1700 objects. (reported by Nikodemus Siivola and Paul Dietz)
1701 * optimization: improved the MIPS versions of generic (in the
1702 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1703 * optimization: direct conversion of (unsigned-byte 32) to floats on
1704 the PowerPC platform.
1705 * optimization: structure instances with raw slots now use less
1706 memory, and probably show better memory locality. (thanks to
1708 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1709 are treated as requests for stack allocation on the x86-64,
1710 Alpha-32, PPC and SPARC platforms.
1711 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1712 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1713 (thanks to Tony Martinez)
1715 ** gcing a dead thread can no longer lead to lockups
1716 ** threads block signals until they are set up properly
1717 ** errno is no longer shared by threads
1718 ** interrupt-thread restores the eflags register on x86
1719 ** fixed some lockups due to gc/thread interaction
1720 * fixed some bugs revealed by Paul Dietz' test suite:
1721 ** invalid dotted lists no longer raise a read error when
1722 *READ-SUPPRESS* is T
1723 ** signal an error if a symbol that names a declaration is used
1724 as the name of a type, or vice versa
1725 ** allow using the (declare (typespec var*)) abbreviation for
1726 (declare (type typespec var*)) with all type specifiers
1727 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1728 ** always return NIL from PPRINT-POP when OBJECT is NIL
1729 ** don't signal errors when pretty-printing malformed LABELS,
1730 FLET or MACROLET forms
1731 ** declarations in a DOLIST body are also in scope for the
1733 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1735 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1738 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1739 * fixed cross-compiler leakages that prevented building a 32-bit
1740 target with a 64-bit host compiler.
1741 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1742 opened with :IF-EXISTS :OVERWRITE.
1743 * fixed bug 281: error for an invalid qualifier in a short-form method
1744 combination method is not signalled until the faulty method is called.
1745 * bug fix: iteration variable type inferrer failed to deal with open
1746 intervals. (reported by Alan Shields)
1747 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1748 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1749 or more runtime options were provided to the sbcl binary.
1750 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1751 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1752 * optimization: there's now a fast-path for fixnum arguments in the
1753 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1754 * optimization: the code generated on x86-64 is more compact thanks
1755 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1756 * bug fix: floating-point exception handling now partly works on
1757 x86-64. (Thanks to James Knight)
1758 * improvement to the MIPS backend from Thiemo Seufer: C-style
1759 64-bit long long arguments and return values to alien functions
1761 * fixed some bugs revealed by Paul Dietz' test suite:
1762 ** the type-error signalled from WARN has a filled-in DATUM slot.
1763 ** the type-error required when a stream is not associated with
1764 a file has the stream as its datum.
1765 ** type-errors on single-floats on x86-64 no longer have
1766 :INVALID-OBJECT as the datum
1767 ** the type-errors signalled for invalid function names now have
1768 a correct expected type
1769 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1770 for structures defined with a :TYPE. Documentation strings for
1771 typed structures are no longer immediately discarded
1772 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1773 broadcast streams and synonym streams. FILE-LENGTH now also works
1774 on broadcast streams.
1776 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1777 * incompatible change: the --noprogrammer option, deprecated since
1778 version 0.7.5, has been removed. Please use the equivalent
1779 --disable-debugger option instead.
1780 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1782 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1783 inoperational for a while now) has been completely removed.
1784 * null lexical environments are now printed as #<NULL-LEXENV>,
1785 significantly reducing the amount of clutter in typical backtraces.
1786 * documentation on weak pointers, finalization, and after GC hooks
1787 has been added to the manual.
1788 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1789 as other specialized array types, is much faster. SUBSEQ and
1790 COPY-SEQ on such arrays have also been sped up.
1791 * optimization: EQL is now more efficient when at least other argument
1792 is known to be of type (OR FIXNUM (NOT NUMBER)).
1793 * fixed bug: the runtime is now less vulnerable to changes in the
1794 size of the SBCL object on OS X, and virtual memory is reserved for
1795 all spaces that need to be at a fixed address.
1796 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1797 * fixed bug: finalizers and after GC hooks that cause consing are now
1799 * fixed bug: compiler error messages and summaries are now printed to
1800 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1801 * fixed inference of the upper bound of an iteration variable.
1802 (reported by Rajat Datta).
1803 * fixed bug 211e: calling local functions with duplicated constant
1804 keyword argument no longer causes a bogus style warning about an
1806 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1807 ftype declaration to be disregarded. (reported by Dave Roberts)
1808 * fixed bug 373: caused by erronous compilation of references to alien
1809 variables in the runtime on ppc/darwin.
1810 * fixed bug 376: CONJUGATE type deriver.
1811 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1812 (reported by Baughn on #lisp)
1813 * a cross-compiler bug on non-x86 platforms has been identified and
1814 fixed. (thanks to Bruno Haible)
1815 * improvements to the MIPS runtime code for increased stability.
1816 (thanks to Thiemo Seufer)
1817 * increased the maximimum compact environment size to allow
1818 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1819 * partial workaround for bug 135: don't name the function we're
1820 calling for hairy cases of EVAL, so as not to accumulate one environment
1821 entry per call to EVAL. (reported by Kevin Reid)
1822 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1823 * optimization: type testing for non-vector arrays should be faster.
1824 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1826 * bug fix: setting 31st element of a bit vector to zero did not work
1828 * bug fix: redefining a class definition which failed due to a
1829 previous accessor / function clash now works (but see BUGS entry
1830 #380 for more problems in this area). (thanks to Zach Beane)
1831 * the long form of DEFINE-METHOD-COMBINATION disables method group
1832 checking when given a single method group with pattern *. (thanks
1834 * on x86 compiler supports stack allocation of results of simple
1835 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1836 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1837 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1838 * fixed some bugs related to Unicode integration:
1839 ** the restarts for recovering from input and output encoding
1840 errors only appear when there is in fact such an error to
1842 * fixed some bugs revealed by Paul Dietz' test suite:
1843 ** MISC.549 and similar: late transformation of unsafe type
1844 assertions into derived types caused unexpected code
1846 ** SCALE-FLOAT type deriver is less wrong.
1847 ** type derivers for EXP, LOG and similar functions compute result
1848 types for complex arguments better.
1849 ** (MISC.563) CONJUGATE type deriver works for very restricted
1851 ** out-of-line type testers for character strings are available.
1852 ** EQUAL compiler transform understands specialness of objects
1854 ** accessing double-floats stored on the stack now works on x86-64.
1855 ** debugger internals could sometimes create invalid lispobjs,
1856 resulting in GC crashes.
1857 ** MISC.548: type check weakening can convert required type into
1859 ** initialization forms for bindings are not in scope of free special
1862 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1863 * incompatible change: thread support for non-NPTL systems has
1864 been removed - locking is buggy and unreliable. A threaded
1865 SBCL build will now warn at startup and refuse to create
1866 new threads, unless futex support is detected in the kernel
1867 * incompatible change: the top level REPL now has only an ABORT
1868 restart associated with it, not TOPLEVEL and ABORT as it used to.
1869 TOP and TOPLEVEL are now available as debugger commands for
1870 returning to the top level.
1871 * incompatible change: forms evaluated in the REPL now use the
1872 global optimization policy.
1873 * incompatible change: user- and system-initialization files are
1874 no longer processed with LOAD, but by READ and EVAL; hence the
1875 global optimization policy, startup package, readtable, etc,
1877 * The .fasl file format number has been incremented because of
1878 various incompatible changes.
1879 * internal entry point details and argument counts no longer appear
1880 in backtraces unless explicitly requested by setting
1881 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1882 * built-in and standard functions no longer have names like "top
1883 level local call to FOO".
1884 * fixed bug 32: functions defined in non-null lexical environments
1885 now have more legible printed representation
1886 * fixed bug 33: functions defined in non-null lexical environemnts
1887 are now more amenable to inspection by INSPECT.
1888 * workaround for bug 354: XEPs no longer appear in backtraces unless
1889 explicitly requested.
1890 * fixed bug: receiving the signal which results from attempting to
1891 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1892 SIGBUS on other *BSDs) on architectures where the C stack is also
1893 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1894 to debugger confusion or wild instability. (reported by Cheuksan
1896 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1897 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1898 (reported by Lutz Euler)
1899 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1900 compiled code. (reported by Paul Dietz)
1901 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1902 specialized parameter to a method to something that is not TYPEP
1903 the specializer is now possible.
1904 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1905 face of package deletion.
1906 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1907 pathname. (reported by David Tolpin on c.l.l)
1908 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1909 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1910 STRING-STREAM and FILE-STREAM, respectively.
1911 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1912 than previously; in addition, its test suite is now run on build.
1913 (thanks to Luke Gorrie)
1914 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1915 * optimization: added a immediate representation for single-floats
1917 * fixed some bugs revealed by Paul Dietz' test suite:
1918 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1919 ** attempting to create a package with a colliding nickname causes
1920 correctable errors to be signalled.
1921 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1922 ** several x86-64 backend bugs related to sign-extension of immediate
1925 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1926 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1927 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1929 * fixed loading of multiply forward-referenced layouts.
1930 (thanks to Cheuksan Wang)
1931 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1932 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1933 (see COMPILE-FILE documentation for details of :PRINT option)
1934 * fixed bugs 19 and 317: fixed-format floating point printing is
1935 more accurate. This also fixes a bug reported by Adam Warner
1936 related to the ~@F format directive.
1937 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1939 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1940 dispatch table if the from-char is a dispatch macro character.
1941 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1942 by the wordsize no longer ignore the last word. (reported by Lutz
1944 * fixed bug in type checking of dynamic-extent variables. (reported
1946 * optimization: sequence traversal functions use their freedom to
1947 coerce function designators to functions.
1948 * optimization: code with many calls to CLOS methods specialized on
1949 CLOS classes has had redundant type checks removed.
1950 * optimization: added declarations to speed up operations that access
1951 the internal character database (for example STRING-UPCASE)
1952 * optimization: comparison operations between floats and sufficiently small
1953 fixnums no longer create extra rationals
1954 * fixed some bugs related to Unicode integration:
1955 ** portions of multibyte characters at the end of buffers for
1956 character-based file input are correctly transferred to the
1957 start of the buffer at the next read.
1958 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1959 passing it through to OPEN.
1960 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1961 argument given to internal calls to OPEN.
1962 ** the built-in comment readers (introduced by character sequences
1963 ";" and "#|") are more forgiving to encoding errors; they will
1964 STYLE-WARN and then attempt to resync the stream at a character
1965 boundary. (thanks to Teemu Kalvas)
1966 * fixed some bugs in the x86-64 port:
1967 ** Negative short int return values from c-calls are sign-extended
1969 ** The stack is aligned to 16-bytes for c-calls, as required by
1970 the ABI. (thanks to Cheuksan Wang)
1971 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1972 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1973 for enums. (thanks to Vincent Arkesteijn)
1974 ** Multiple small optimizations and bugfixes for floating point
1976 * fixed some bugs revealed by Paul Dietz' test suite:
1977 ** Space, Tab, Linefeed, Return and Page have the invalid
1978 secondary constituent character trait.
1979 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1981 ** WITH-INPUT-FROM-STRING should only update the index place on
1983 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1984 works more reliably.
1985 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1986 with one-dimensional arrays with fill pointers.
1987 ** TYPE-OF failed on a complex with an integer realpart and a
1989 ** compiler failure during type inference for the code of form
1990 (IF (EQL X (THE ...)) ...) (MISC.535).
1992 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1993 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1994 platform. The port supports 61-bit fixnums, large memory spaces
1995 and reloading shared object files.
1996 * enhancement: saving cores with foreign code loaded is now
1997 supported on ppc/Darwin in addition to the previously supported
1999 * enhancement: the statistical profiler now walks deeper into the
2000 call stack for more meaningful call-graphs and accrued time
2001 reports (x86/x86-64 only). It also now reports time spent in
2003 * enhancement: it is now possible to trace most individual methods
2004 of a generic function in addition to tracing the generic function
2006 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2008 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2009 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2010 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2011 produces an error. (thanks to Vincent Arkesteijn)
2012 * bug fix: NAMESTRING on pathnames with :WILD components in their
2013 directories works correctly. (thanks to Artem V. Andreev)
2014 * fixed bug 125: compiler preserves identity of closures. (reported
2016 * bug fixed: functions with &REST arguments sometimes failed with
2017 "Undefined function" when compiled with (DEBUG 3). (reported by
2019 * bug fix: overflow during compiling of setting element of a bit
2020 vector with constant index and value. (reported by Timmy Douglas)
2021 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2022 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2023 * on x86 compiler partially supports stack allocation of dynamic-extent
2025 * GO and RETURN-FROM do not check the extent of their exit points
2026 when compiled with SAFETY 0.
2027 * fixed some bugs related to Unicode integration:
2028 ** encoding and decoding errors are now much more robustly
2029 handled; it should now be possible to recover even from invalid
2030 input or output to the terminal. (thanks to Teemu Kalvas)
2031 ** provided a first cut at implementing STRING-TO-OCTETS and
2032 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2033 ** altered the SB-MD5 contributed module slightly, changing the
2034 interface just enough for it to be supportable for builds where
2035 lisp characters are not eight bits.
2036 * fixed some bugs revealed by Paul Dietz' test suite:
2037 ** the FORMATTER-generated functions for ~V[ conditionals require
2038 the correct number of arguments.
2039 ** READ-FROM-STRING returns the mandated second value when applied
2040 to displaced strings.
2041 ** the #\Rubout and #\Backspace characters are treated as invalid
2042 constituent characters by the tokenizer.
2044 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2045 * new feature: reloading changed shared object files with
2046 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2047 * new feature: references to foreign variables and functions
2048 can now be compiled and loaded before the corresponding shared
2049 object file is loaded, as long as the foreign definitions are
2050 available at runtime.
2051 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2052 supported. (thanks to Dan Debertin)
2053 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2054 just keywords. (thanks to Vincent Arkesteijn)
2055 * fixed bug #331: structure-class instances corresponding to
2056 DEFSTRUCT forms are now created eagerly.
2057 * fixed bug #345: backtraces from calls to undefined functions work
2058 on x86 as well. Related bug #61 is now also partially fixed on x86
2059 (backtraces from throws to unknown catch tags.)
2060 * bug fix: lambda-list parsing is now stricter vrt. order and number
2061 of lambda-list keywords.
2062 * bug fix: as specified by AMOP, an error is signalled if a
2063 class-option appears multiple times in a DEFCLASS form. (reported
2065 * bug fix: RANDOM can be compiled when the compiler derives the type
2066 of its numeric argument as a disjoint set of small integers.
2067 (reported by Paul Dietz)
2068 * bug fix: starting a core saved with shared objects loaded when
2069 those objects are not available no longer causes threaded SBCL to
2070 hang. (reported by Sean Ross)
2071 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2073 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2074 argument, which must always be NIL. (reported by Kalle Niemitalo)
2075 * bug fix: printing 1.0d+23 no longer results in an error.
2076 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2077 * bug fix: structure slot setters preserve evaluation order. (thanks
2079 * fixed some bugs related to Unicode integration:
2080 ** RUN-PROGRAM can allow its child to take input from a Lisp
2081 stream. (reported by Stefan Scholl)
2082 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2083 locales. (reported by Ken Causey)
2084 * fixed some bugs revealed by Paul Dietz' test suite:
2085 ** INCF, DECF and REMF evaluate their place form as specified in
2087 ** FORMATTER expands ~{ ~} iteration directives with V or #
2088 parameters correctly.
2089 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2090 consequent uses no arguments correctly.
2091 ** the system has a partial understanding of the (COMPLEX RATIO)
2093 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2096 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2097 * new feature: a build-time option (controlled by the :SB-UNICODE
2098 keyword feature, enabled by default) for building the system with
2099 support for the entire 21-bit character space defined by the
2101 * new feature: the system now has rudimentary external-format
2102 support; the primary user-visible change at this time is that
2103 characters with the high bit set (such as lower-case-e-acute) will
2104 print correctly to a terminal in a UTF-8 environment.
2105 * minor incompatible change: BASE-CHAR no longer names a class;
2106 however, CHARACTER continues to do so, as required by ANSI.
2107 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2108 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2109 has been moved to the SB-EXT package (temporarily re-exported from
2111 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2112 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2114 * fixed bug #351: better error-handlind and reporting for malformed
2116 * fixed bug #350: bignum-printing is now more memory-efficient,
2117 allowing printing of very large bignums, eg. (expt 2 10000000).
2118 (reported by Bruno Haible)
2119 * fixed bug #302: better primitive-type selection for intersection
2121 * fixed bug #308: non-graphic characters now all have names, as
2122 required. (reported by Bruno Haible)
2123 * bug fix: redefining a class with different superclasses now correctly
2124 removes it from the direct-subclasses of its previous superclasses.
2125 (reported by David Morse)
2126 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2127 new value now works. (reported by Bruno Haible)
2128 * bug fix: correct canonicalization of multiple non-standard slot
2129 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2130 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2131 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2132 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2133 now exists, an signals an error.
2134 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2135 during macroexpansion for non-iteration variables as well. (reported
2136 by Bruno Haible for CMUCL)
2137 * bug fix: Cyclic structures and unprintable objects in compiler
2138 messages no longer cause errors. (reported by Bruno Haible)
2139 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2140 and READ-FROM-STRING all now return a primary value of NIL if
2141 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2142 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2143 (reported by Bruno Haible for CMUCL)
2144 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2145 do not designate a condition. (reported by Bruno Haible for
2147 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2148 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2149 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2150 permitting resolution in favour of any of the conflicting symbols.
2151 (reported by Bruno Haible for CMUCL)
2152 * bug fix: EQUAL compiler optimizations is less aggressive on
2153 strings which can potentially compare true despite having distinct
2154 specialized array element types.
2155 * bug fix: unit enumerations can be defined without dividing by
2156 zero. (thanks to Vincent Arkesteijn)
2157 * FORMAT compile-time argument count checking has been enhanced.
2158 (report from Bruno Haible for CMUCL)
2159 * a partial workaround for the bug 262: the compiler does not try to
2160 inline-expand a local function doing RETURN-FROM from a deleted
2161 BLOCK. (thanks to Peter Denno for the bug report and to David
2162 Wragg for the simple test case)
2163 * fixed some bugs revealed by Paul Dietz' test suite:
2164 ** RENAME-PACKAGE allows all package designators as new package
2166 ** constraint propagation and lambda variable substitution are
2167 more cautious in dealing with partially deleted code.
2168 ** compiler sometimes lost reoptimization passes.
2169 ** CERROR, given a condition as condition designator, passes its
2170 remaining arguments to the continue format control without
2172 ** Case-altering FORMAT directives work correctly on non-ASCII
2174 ** The REAL type specifier handles bounds outside the floating
2175 point ranges without signalling FLOATING-POINT-OVERFLOW.
2176 ** Functions with IR1-transformations can create intercomponent
2177 references to global functions.
2178 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2180 ** FORMAT ~R treats a nil value for its first parameter correctly.
2182 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2183 * enhancement: saving cores with foreign code loaded is now
2184 supported on x86/NetBSD and sparc/Linux in addition to the previously
2185 supported platforms.
2186 * bug fix: on some platforms repeated installations caused multiple
2187 copies of HTML documentation to be installed -- should not happen
2188 any more. (reported by Stefan Scholl)
2189 * bug fix: parsing self-recursive alien record types multiple times
2190 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2191 original patch by Helmut Eller for CMUCL)
2192 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2193 (thanks to Richard Kreuter)
2194 * bug fix: defining classes whose accessors are methods on existing
2195 generic functions in other (locked) packages no longer signals
2196 bogus package lock violations. (reported by François-René Rideau)
2197 * bug fix: special variables as DEFMETHOD parameters no longer have
2198 associated bogus type declarations. (reported by David Wragg and
2200 * bug fix: read-write consistency on streams of element-type
2201 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2202 * bug fix: redefiniton of the only method of a generic function with
2203 no DEFGENERIC no longer emits a full WARNING. In addition,
2204 redefinition of generic functions with no DEFGENERIC to an
2205 incompatible lambda list now signals an error. (thanks to Zach
2207 * bug fix: DEFGENERIC now works even when there's a function of the
2208 same name in an enclosing lexical environment. (thanks to Zach
2210 * fixed compiler failure, caused by instrumenting code during
2211 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2212 * optimization: added loop analysis and improved register allocation
2213 * fixed some bugs revealed by Paul Dietz' test suite:
2214 ** POSITION on displaced vectors with non-zero displacement
2215 returns the right answer.
2216 ** (SIMPLE-STRING) is a valid type specifier for sequence
2218 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2220 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2221 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2223 ** The justification version of the FORMAT ~< directive treats
2224 non-zero minpad parameter correctly.
2226 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2227 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2228 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2229 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2230 the supported interface.
2231 * new feature: Single-stepping of code compiled with DEBUG 2 or
2232 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2233 * new feature: saving cores with foreign code loaded is now
2234 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2235 Timothy Moore's work for CMUCL)
2236 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2237 parameters to * instead of NIL if no initform is supplied.
2238 (reported by Johan Bockgaard)
2239 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2240 correctly when FUNCALL appears as the car of the form. Note:
2241 despite this FUNCALL forms are not currently subject to
2242 compiler-macro expansion. (port of Raymond Toy's fix for the
2243 same from CMUCL, reported by Johan Bockgaard)
2244 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2245 (thanks for Teemu Kalvas)
2246 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2247 case instead of terminating the iteration (thanks for Julian
2248 Squires, Sean Champ and Raymond Toy)
2249 * bug fix: incorrect expansion of defgeneric that caused a style
2250 warning. (thanks for Zach Beane)
2251 * bug fix: slot accessor effective method computation works properly
2252 for classes with multiple non-standard applicable methods on
2253 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2254 * on x86 compiler supports stack allocation of results of LIST and
2255 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2256 CMUCL implementation by Gerd Moellmann)
2257 * fixed some bugs revealed by Paul Dietz' test suite:
2258 ** FORMAT strings with both the ~<~:;~> form of the justification
2259 directive and pretty-printing directives cause an error.
2261 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2262 * incompatible change: the internal functions
2263 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2264 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2265 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2266 instead of the old functions.
2267 * new feature: on platforms where "dladdr" is available foreign
2268 function names now appear in backtraces. (based on Helmut Eller's
2270 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2271 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2273 * documentation: ASDF manual is now distributed with SBCL.
2274 * bug fix: SBCL can now load its contributed modules with REQUIRE
2275 even if the system-provided entries have been removed from
2276 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2278 * bug fix: backtraces involving undefined functions or assembly
2279 routines are more informative. (thanks to Brian Downing)
2280 * bug fix: mutually referent alien structures now work correctly.
2281 (reported by Rick Taube)
2282 * bug fix: structures defined by WITH-ALIEN can be referred to
2283 within other definitions in the same WITH-ALIEN.
2284 * bug fix: division operators (MOD, TRUNCATE and the like) with
2285 constant zero divisors and integer dividends no longer generate
2287 * bug fix: provide default methods for INPUT-STREAM-P and
2288 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2289 * bug fix: improve the detection and resolution of MOP metacycles
2290 (where effective method computation depends on the generic function
2291 having its effective method computed). (reported by Bruno Haible)
2292 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2293 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2294 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2295 * bug fix: pathnames with relative directory components can be
2296 represented relative to default pathnames.
2297 * optimization: in taking the GCD of bignums, reduce the two bignums
2298 to approximately the same size (using Euclid's algorithm) before
2299 applying the more sophisticated binary GCD. (thanks to Juho
2301 * optimization: COUNT on bitvectors now operates word-at-a-time.
2302 * optimization: ASH with a positive, but not necessarily constant,
2303 (leftwards) shift, when in a modular context, is compiled to a
2305 * fixed some bugs revealed by Paul Dietz' test suite:
2306 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2307 if the corresponding argument is NIL.
2308 ** FORMAT directives accepting a minpad parameter treat negative
2310 ** literal commas as character parameters to FORMAT directives are
2312 ** literal spaces directly after ~<Newline> directives within a
2313 format-logical-block (~:< ~@:>) do not induce :FILL-style
2314 conditional newlines.
2315 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2316 as specified: it no longer includes conditional newlines).
2317 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2319 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2320 :PER-LINE-PREFIX argument does not evaluate to a string.
2322 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2323 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2324 the manual for details; for now, package locks can be disabled by
2325 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2326 if no major problems are found then it is likely that they will be
2327 compiled in unconditionally.
2328 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2329 unsupported operators on all platforms. To load a shared library
2330 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2331 object file, link it into a shared library outside of SBCL and
2332 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2334 * bug workaround: ROOM T and the GC were not working together
2335 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2336 reporting facility aren't preserved. That reporting has been
2337 disabled, so now until and unless someone figures out how to make it
2338 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2339 * minor incompatible change: as threatened around sbcl-0.8.0, the
2340 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2341 The symbols are also exported from SB-PCL for backwards
2342 compatibility, but more so than before SB-PCL should be treated as
2343 an implementation-internal package.
2344 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2346 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2347 It is known as of this release not to work on the Alpha, however.
2348 * fixed bug #167: errors signalled due to illegal syntax in method
2349 bodies are now more legible.
2350 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2351 designators and can hence be used with TYPEP.
2352 * fixed bug #333: CHECK-TYPE now ensures that the type error
2353 signalled, if any, has the right object to be accessed by
2354 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2355 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2356 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2358 * fixed bug #334: programmatic addition of slots using specialized
2359 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2360 and :ALLOCATION :CLASS slots.
2361 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2362 float exponents. (rereported by Peter Seibel)
2363 * fixed a bug: #\Space (and other whitespace characters) are no
2364 longer considered to be macro characters in standard syntax by
2365 GET-MACRO-CHARACTER.
2366 * fixed bug: initialization of condition class metaobjects no longer
2367 causes an instance of the condition to be created. (reported by
2369 * fixed bug: it is now possible to have slots such that
2370 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2371 description is neither :INSTANCE nor :CLASS.
2372 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2373 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2374 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2375 non-standard SLOT-DEFINITION-ALLOCATION values.
2376 * fixed bugs: various race conditions handling exiting threads.
2377 CL-PPCRE's thread torture test now passes.
2378 * fixed arguably-a-bug: GC time proportional to number of threads in
2379 system even when most of them are idle
2380 * optimization: improved performance of BIT and SBIT on bit-vectors.
2381 * .fasl file incompatibility: The fasl file version number has
2382 been incremented because of changes associated with package locks.
2384 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2385 * minor incompatible change: the system no longer provides
2386 optimization hints (conditions which are TYPEP
2387 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2388 mode; these hints are still emitted when higher SPEED optimization
2390 * new contrib module: a sampling profiler (profiling by statistical
2391 sampling, rather than by instrumenting functions) is available as
2392 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2393 * the behaviour of the standard function ED is now customizeable by
2394 third parties through a hook variable: see ED's documentation
2395 string for information on the protocol.
2396 * the compiler no longer emits efficiency notes for (FUNCALL X)
2397 when the type of X is uncertain under default optimization
2399 * fixed bug 276: mutating a binding of a specialized parameter to a
2400 method to something that is not TYPEP the specializer is now
2402 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2403 exhibit the required behaviour on the x86 platform. (thanks to
2404 Peter van Eynde, Eric Marsden and Bruno Haible)
2405 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2406 even for difficult arguments. (reported by Peter Graves)
2407 * fixed bug 141a: the backquote printer now descends quoted
2409 * fixed another bug in backquote printing: no more destructive
2410 modification of the form's list structure. (reported by Brian
2412 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2413 move between its address being taken and the call to
2414 interrupt_thread, fixing a crashing race condition.
2415 * the SB-POSIX contrib implementation has been adjusted so that it
2416 no longer exhibits ridiculously poor performance when constructing
2417 instances corresponding to C structs.
2419 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2420 * minor incompatible change: the sb-grovel contrib now treats C
2421 structures as alien (in the sense of SB-ALIEN) objects rather than
2422 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2423 has implications for memory management of client code
2424 (sb-grovel-returned objects must now be manually managed) and for
2425 type safety (alien objects now have full types).
2426 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2427 used to control emission of compiler diagnostics, rather than the
2428 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2429 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2430 quality should be considered deprecated.
2431 * install.sh now installs the user manual as well
2432 * (not quite a new documentable feature, but worth considering in
2433 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2434 beginnings of a semantically meaningful condition hierarchy is
2435 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2437 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2438 designator as the defaults argument.
2439 * fixed bug: Displaced arrays whose displaced-to array has become
2440 too small now cause ARRAY-DIMENSION to signal an error, providing
2441 for safer bounds-checking. (reported by Bruno Haible)
2442 * fixed bug: DEFCLASS slot definitions with identical :READER and
2443 :WRITER names now signal a reasonable error. (reported by Thomas
2445 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2447 * fixed bug: Invalid slot specification errors now print correctly.
2448 (thanks to Zach Beane)
2449 * fixed bug 320: Shared to local slot value transfers in class
2450 redefinitions now happen corrently from superclasses as
2451 well. (reported by Bruno Haible)
2452 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2454 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2455 improper lists correctly. (reported by Bruno Haible)
2456 * fixed bug 313: source-transform for <fun-name> was erroneously
2457 applied to a call of a value of a variable with name <fun-name>.
2458 (reported by Antonio Menezes Leitao)
2459 * fixed bug 307: The obsolete instance protocol ensures that
2460 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2461 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2462 remove dead unknown-values globs from the middle of the stack.
2463 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2464 easier to resume long computations after using *BREAK-ON-SIGNALS*
2465 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2466 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2467 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2468 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2469 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2470 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2472 * fixed a (fairly theoretical) bug in string printing: if
2473 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2474 does not have array-element-type equal to the most general string
2476 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2477 function name. (thanks to Nikodemus Siivola)
2478 * fixed bug: compile-time format string checker failed on
2479 non-closed ~{. (reported by Thomas F Burdick)
2480 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2481 don't warn on legal loop code involving more than one aggregate
2482 boolean. (thanks to Nikodemus Siivola)
2483 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2484 in keyword position to MAKE-PACKAGE was not being reported as
2486 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2487 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2489 * fixed bugs 280 and 312: the checking for multiple definitions in a
2490 file is less likely to become confused by uses of inline
2492 * fixed bug: the #S reader macro performs the keyword coercion
2493 specified for slot names. (reported by Kalle Niemitalo)
2494 * fixed bug: lambda lists may contain symbols whose names start with
2495 & but are not lambda-list-keywords; their occurrence triggers a
2497 * fixed bug 321: define-method-combination argument lambda lists do
2498 not cause invalid code to be generated when &optional or &aux
2499 variables have default values. (reported by Bruno Haible)
2500 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2501 have CLOS classes; this appears also to have fixed reported
2502 instability in stack exhaustion detection.
2503 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2504 MUFFLE-WARNING when no associated restart is present is now
2506 * optimization: rearranged the expansion of various defining macros
2507 so that each expands into only one top-level form in a
2508 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2510 * optimization: used a previously little-used slot in symbols to
2511 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2513 * fixed some bugs revealed by Paul Dietz' test suite:
2514 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2516 ** Fixed an optimization bug related to inheritance of initforms
2517 from local to shared slots.
2518 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2519 ** CAST optimizer forgot to flush argument derived type.
2520 ** print/read consistency on floats is now orders of magnitude
2521 more likely. (thanks also to Bruno Haible for a similar report
2523 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2524 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2525 for objects of type REAL. Make it so.
2526 ** SXHASH is specified (infelicitously) to respect similarity,
2527 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2528 it so. (thanks to Markus Ziegler)
2529 ** on the Alpha, the compiler succeeds in compiling functions
2530 returning a known number of arguments greater than 63.
2531 ** fixed handling of invalid NIL arguments in keyword position
2533 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2535 ** provided a readably-printable representation for RANDOM-STATE
2537 ** ensured that pathnames, where they have a namestring, always
2538 print using #P"..." syntax.
2540 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2541 * Support for the forthcoming 2.0 version of the NetBSD kernel
2542 running on x86 hardware has been added. (thanks to Perry
2543 E. Metzger most immediately, and others for their past work)
2544 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2545 current release version; SBCL's OpenBSD support had been broken
2546 since about the time of OpenBSD's switch to ELF binary format.)
2547 * [placeholder for DX summary]
2548 ** user code with &REST lists declared dynamic-extent, under high
2549 speed or space and low safety and debug optimization policy.
2550 * The manual has been converted to Texinfo format and the debugger
2551 chapter from the cmucl manual has been added.
2552 * A facility has been added to extract documentation strings from
2553 sbcl and store them as Texinfo-formatted snippets for inclusion in
2554 the manual (via Texinfo's @include directive)
2555 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2556 the test case to Dave Roberts)
2557 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2558 pointers. (reported by Sean Ross)
2559 * bug fix: PROFILE output is printed nicely even for large numerical
2560 values. (thanks to Zach Beane)
2561 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2562 greater than 32 handle EOF correctly.
2563 * bug fix: on X86 an immediate argument of the IMUL instruction is
2564 correctly printed in disassembly. (thanks to Lutz Euler)
2565 * bug fix: class slots in redefined classes preserve their old
2566 values. (thanks to Bruno Haible and Nikodemus Siivola)
2567 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2568 succeeds. (reported by Marco Baringer)
2569 * fixed some bugs revealed by Paul Dietz' test suite:
2570 ** READ-SEQUENCE now works on ECHO-STREAMs.
2571 ** RATIONALIZE works more according to its specification. (thanks
2574 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2575 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2576 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2577 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2578 should matter to you only if you rebind the printer control
2579 variables and then find you want different bindings in the
2580 debugger than in the ordinary execution of your program.)
2581 * The runtime build system has been tweaked to support building
2582 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2583 assembler and linker. (thanks to Nikodemus Siivola)
2584 * Unbound, undefined, undeclared variables now trigger full
2585 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2586 more often programmer error than deliberate exploitation of undefined
2588 * optimization: the hash algorithm for strings has changed to one
2589 that is less vulnerable to spurious collisions. (thanks to Juho
2591 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2592 needless bounds checking. (thanks to Juho Snellman)
2593 * optimization: implemented multiplication as a modular
2594 (UNSIGNED-BYTE 32) operation on the PPC backend.
2595 * fixed some bugs revealed by Paul Dietz' test suite:
2596 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2598 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2599 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2600 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2602 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2604 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2606 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2607 their output stream on EOF from read.
2608 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2609 have been read to end-of-file.
2610 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2612 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2613 description of determination of which consecutive characters
2615 ** Printing the "Space" character with escaping on now yields "#\\ ",
2616 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2617 ** Reading floating-point numbers with *READ-BASE* set to a number
2618 less than 10 works correctly.
2619 ** Reading floating-point numbers with *READ-BASE* set to a number
2620 more than 10 works correctly.
2621 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2622 the readtable currently in effect.
2624 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2625 * minor incompatible change: parsing of namestrings on a physical
2626 (Unix) host has changed; numbers after the final #\. in a
2627 namestring are no longer interpreted as a version field. This is
2628 intented to be largely invisible to the user, except that the
2629 meaning of the namestring "*.*.*" has changed: it now refers to a
2630 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2631 should usually be replaced by
2632 (make-pathname :name :wild :type :wild :version :wild)
2633 with the added benefit that this is more likely to be portable.
2634 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2635 option to OPEN now signals an error if the file being opened
2636 exists; this may have an impact on existing code.
2637 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2638 signals received, on the PowerPC platforms (both Linux and
2639 Darwin). (thanks to Pierre Mai for pointing out the location of
2641 * several fixes on OS X: The system now builds and runs cleanly on
2642 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2643 (thanks to Brian Mastenbrook)
2644 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2645 second-resolution: integer multiples of 1/3600 between -24 and 24.
2646 (thanks to Vincent Arkesteijn)
2647 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2648 type when called with 1 argument; PEEK-CHAR checked type of
2649 PEEK-TYPE only after having read first character from a
2650 stream. (reported by Peter Graves)
2651 * bug fix: the garbage collector now has much better locality
2652 behaviour, and in particular no longer treats all memory as being
2653 exhausted when many small objects point to each other in a deeply
2655 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2656 recognized as being TYPEP their class.
2657 * bug fix: the PUSHNEW documentation string has been corrected.
2658 (thanks to Vincent Arkesteijn)
2659 * bug fix: defaulting of the value for the last of an atypically
2660 large number of multiple values being bound was not being
2661 performed correctly on the Alpha or PPC platforms
2662 * optimization: implemented multiplication as a modular
2663 (UNSIGNED-BYTE 32) operation on the x86 backend.
2664 * optimization: SEARCH on simple-base-strings can now be open-coded.
2665 (see also contrib/compiler-extras.lisp for inspiration for
2666 teaching the compiler about the Boyer-Moore algorithm).
2667 * value, returned by MAX (and MIN) called with several EQUALP, but
2668 not EQL, arguments now does not depend on compiler settings.
2669 * fixed some bugs revealed by Paul Dietz' test suite:
2670 ** in stack analysis liveness information is propagated from
2671 non-local entry points.
2672 ** pathwise CAST removing failed when the CAST node did not start
2674 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2675 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2677 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2678 host is already defined.
2679 ** RENAME-FILE works on streams instead of signalling an internal
2681 ** PEEK-CHAR uses the current readtable when determining whether
2682 or not a character is whitespace.
2683 ** MERGE-PATHNAMES handles the case when the pathname does not
2684 specify a name while the default-pathname specifies a version.
2685 ** Pathnames now stand a better chance of respecting print/read
2687 ** Attempting to use standardized file system operators with a
2688 pathname with invalid :DIRECTORY components signals a
2690 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2692 ** DIRECTORY on logical pathnames is more correct.
2693 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2694 signal a TYPE-ERROR if their argument is not a stream.
2695 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2696 designator argument does not designate a stream.
2697 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2698 examining the synonym.
2699 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2701 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2702 element-type larger than ([UN]SIGNED-BYTE 32).
2704 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2705 * When built with the :SB-FUTEX feature, threaded builds now take
2706 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2707 for faster/more reliable mutex and condition variable support.
2708 * Incompatible change (but one you probably shouldn't have been using
2709 anyway): the interface and code for arbitrating between multiple
2710 threads in the same user session has been redesigned.
2711 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2712 error when called without an explicit environment argument.
2713 (thanks to Nikodemus Siivola)
2714 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2715 confused about their position. (thanks to Adam Warner and Gerd
2717 * bug fix: Pretty printing backquoted forms with unquotations in the
2718 argument list position of various code constructs such as LAMBDA
2719 now works correctly. (reported by Paul Dietz)
2720 * bug fix: Pretty printing unquotations no longer loses all
2721 stream position information.
2722 * optimization: performance of string output streams is now less
2723 poor for multiple small sequence writes.
2724 * optimization: performance of CSUBTYPEP in the presence of complex
2725 expressions involving CONS and NOT many times has been improved.
2726 (reported by Paul Dietz)
2727 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2729 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2730 streams for the REPL, for the debugger, and so on. (thanks to
2732 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2733 * fixed some bugs revealed by Paul Dietz' test suite:
2734 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2735 is ignored if it is too small, rather than propagating through
2736 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2737 ** extremely complex negations of CONS types were not being
2738 sufficiently canonicalized, leading to inconsistencies in
2740 ** VALUES tranformer lost derived type.
2742 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2743 * fixed a bootstrapping bug: the build process no longer assumes
2744 that the various BOOLE-related constants have the same value in
2745 host and target lisps. (noted by Paul Dietz' test suite on an
2746 SBCL binary built from CLISP)
2747 * The system can now be dynamically linked on the MIPS platform,
2748 which enables dynamic loading of foreign code from Lisp. (thanks
2749 to Ralf Baechle for discussions on the MIPS ABI)
2750 * The system now records debugging information for its own source
2751 files in a filesystem-position-independent manner, relative to
2752 the "SYS" logical host.
2753 * fixed a compiler bug: MV-LET convertion did not check references
2754 to the "max args" entry point. (reported by Brian Downing)
2755 * tweaked disassembly notes to be less confident about proclaiming
2756 some instruction as an LRA. (thanks to Brian Downing)
2757 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2758 now each have their own history, command character, and other
2759 characteristics. (thanks to David Lichteblau)
2760 * fixed some bugs revealed by Paul Dietz' test suite:
2761 ** compiler failure in compiling LOGAND expressions including a
2763 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2764 shift greater than 32.
2765 ** FLUSH-DEST did not mark blocks for type check regeneration.
2766 ** HANDLER-CASE failed to accept declarations in handler clauses
2767 in some circumstances.
2769 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2770 * New code in contrib/sb-introspect (still probably not entirely
2771 stable yet) provides some support for smart Lisp development
2772 environments like SLIME.
2773 * The conditions signalled for errors occurring when loading .fasl
2774 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2775 in a way which should help ASDF recover gracefully.
2776 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2777 stuff has been cleaned up. If you code contrib/ stuff, this might
2778 affect you, and you can look at contrib/README, contrib/STANDARDS,
2779 and/or the 0.8.4.27 diff to check.
2780 * In full calls the compiler now does not generate checks for declared
2781 argument types for all arguments.
2782 * various threading fixes
2783 ** and some experimental patches which didn't make it into
2784 the main tree for this release, but which are shipped in
2785 contrib/experimental-thread.patch as a possible fix for some
2786 failures (deadlock, spinning...) in GC-intensive multithreaded
2788 * fixed PPC build problem (source code incompatibility of different
2789 library versions): added offsetof() hackery which attempts to divine
2790 where glibc maintainers put uc_mcontext today
2791 * fixed bug 282: compiler does not trust type assertions while passing
2792 arguments to a full call.
2793 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2794 &OPTIONAL VALUES type parameter.
2795 * fix bug 214: algorithm for noting rejected templates is now more
2796 similar to that of template seletion. (also reported by rydis on
2798 * fixed bug 141b: printing backquoted information readably and prettily
2799 inserts a space where necessary.
2800 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2801 (CHARACTER 10) are now reported as errors, rather than propagated
2802 as unknown types. (reported by piso on #lisp)
2803 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2804 with values NIL and :ERROR. (thanks to Milan Zamazal)
2805 * fixed bug 191c: CLOS now does proper keyword argument checking as
2806 described in CLHS 7.6.5 and 7.6.5.1.
2807 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2808 longer raise an error; further, using a list as a for-as-arithmetic
2809 counter now raises a meaningful error.
2810 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2811 now understood by sequence creation functions such as MAKE-SEQUENCE
2813 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2814 a STRING-INPUT-STREAM.
2815 * compiler enhancement: SIGNUM is now better able to derive the type
2817 * type declarations inside WITH-SLOTS are checked. (reported by
2819 * fixed some bugs revealed by Paul Dietz' test suite:
2820 ** incorrect optimization of TRUNCATE for a positive first
2821 argument and negative second.
2822 ** compiler failure in let-convertion during flushing dead code.
2823 ** compiler failure while deriving type of TRUNCATE on an
2824 interval, containing 0.
2825 ** ASH of a negative bignum by a negative bignum count now returns
2827 ** intersection of CONS types now canonicalizes properly, fixing
2828 inconsistencies in SUBTYPEP.
2830 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2831 * incompatible change: The --disable-debugger command line
2832 option now clobbers the debugger at a more fundamental
2833 level, by redefining #'INVOKE-DEBUGGER instead of by
2834 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2835 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2836 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2837 enter the debugger REPL and then suffer recursive errors
2838 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2839 while under the new system, BREAK in --disable-debugger mode
2840 terminates the system just as an unhandled error would.
2841 * fixed compiler performance when processing loops with a step >1;
2842 * bug fix: DOCUMENTATION now retrieves generic function
2843 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2844 support has been systematized, and now supports the methods
2845 specified by ANSI, along with a default method and a method for
2846 slot documentation. (reported by Nathan Froyd)
2847 * bug fix: effective methods associated with a generic function are
2848 no longer cached over a change of that generic function's method
2849 combination. (reported by Andreas Fuchs)
2850 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2851 names a non-existent directory. (thanks to Andreas Fuchs)
2852 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2853 the PPC platform, lead to stack corruption; this has been fixed.
2854 (reported by Rainer Joswig)
2855 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2856 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2857 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2858 arithmetic in general, is now much more reliable on the PPC
2860 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2861 platform now returns the right answer.
2862 * optimization: restored some effective method precomputation in
2863 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2864 precomputation is now tunable.
2865 * optimization: compiler-internal data structure use has been
2866 reviewed, and changes have been made that should improve the
2867 performance of the compiler by about 20%.
2868 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2869 simple-base-strings and simple-bit-vectors is improved.
2870 * optimization: the optimization of 32-bit logical and arithmetic
2871 functions introduced in version 0.8.3 on the x86 has been
2872 implemented on the mips, ppc and sparc platforms; an
2873 implementation of the same facility, but for 64-bit arithmetic,
2874 has been added for the alpha.
2875 * microoptimization: the compiler is better able to make use of the
2876 x86 LEA instruction for multiplication by constants.
2877 * bug fix: in some situations compiler did not report usage of
2878 generic arithmetic in (SPEED 3) policy.
2879 * bug 145b fix: compiler used wrong type specifier while converting
2880 MEMBER-types to numeric.
2881 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2883 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2884 index argument now works properly on the Alpha platform.
2885 * bug fix: floating point exception treatment on the Alpha platform
2887 * bug fix: FILE-POSITION works much better on string input and
2888 output streams. (thanks to Nikodemus Siivola)
2889 * bug fix: many threading/garbage collection symptoms sorted.
2890 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2891 might be pseudo-atomic.
2892 * internal change: Stopping for GC is now done with signals not
2893 ptrace. GC is now done in whichever thread wanted it, instead of
2895 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2897 * bug fix: result form in DO is not contained in the implicit
2899 * incompatible change: ICR structure is changed; the value part of
2900 CONTINUATION is now called LVAR; corresponding functions are
2901 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2902 * added type deriver for ISQRT (thanks to Robert E. Brown).
2903 * bug fix: better support for loading from the command line when an
2904 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2906 * fixed some bugs revealed by Paul Dietz' test suite:
2907 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2908 ** ROUND and FROUND now give the right answer when given very
2909 small float arguments.
2910 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2912 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2913 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2914 ** LCM should return a non-negative integer.
2915 ** PARSE-INTEGER returned the index of a terminator instead of the
2916 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2917 ** PARSE-INTEGER returned an incorrect index being applied to a
2919 ** LCM with two arguments of 0 returns 0 rather than signalling
2921 ** unsigned addition of a 32-bit constant with the high bit set no
2922 longer causes an internal compiler error on the x86.
2923 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2924 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2925 with negative last argument.
2926 ** byte specifiers with zero size and position no longer cause
2927 an error during type derivation.
2928 ** bignum multiplication on the Alpha platform now returns the
2930 * porting: The system now builds on SuSE AMD64, although it still
2931 generates a 32-bit binary.
2932 * .fasl file incompatibility: The fasl file version number has
2933 been incremented (because of the changes to internal compiler
2934 data structures referred to above).
2936 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2937 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2938 more accurately, on the Darwin kernel running on PowerPC hardware.
2939 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2940 * Compiler code deletion notes now signal a condition of type
2941 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2942 an associated MUFFLE-WARNING restart.
2943 * The compiler now performs limited argument count validation of
2944 constant format strings in FORMAT, and where appropriate in ERROR,
2945 CERROR and WARN. (thanks to Gerd Moellmann)
2946 * New ASDF-INSTALL contrib can be used for automatic download and
2947 installation of third-party Lisp code from CCLAN or other sites
2949 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2950 which forces another thread to execute a function supplied by the
2952 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2953 now accept and act upon their :ELEMENT-TYPE keyword argument.
2954 (reported by Martin Atzmueller, Edi Weitz)
2955 * bug fix: FILE-POSITION now accepts position designators up to
2956 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2957 is the greater. (thanks to Patrik Nordebo)
2958 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2959 Kalle Olavi Niemitalo)
2960 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2961 printable. (reported by Eric Marsden)
2962 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2963 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2964 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2965 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2966 (thanks to Stig Sandoe)
2967 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2968 UNREAD-CHAR now correctly includes the unread character in the
2969 target sequence. (thanks to Gerd Moellmann)
2970 * bug fix in threaded builds: the system can now be suspended and
2971 resumed by shell job control with minimal disruption.
2972 * bug fixes in times and timezones >2038AD
2973 * better handling of "where is GNU make?" problem in build scripts
2974 (thanks to Nikodemus Siivola)
2975 * new optimization: inside a named function any reference to a
2976 function with the same name is considered to be a self-reference;
2977 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2978 optimization quality.
2979 * new optimization on x86: logical functions and + now have
2980 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2981 used when the result is truncated to 32 bits.
2982 * VALUES declaration is partially enabled.
2983 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2984 * fixed some bugs revealed by Paul Dietz' test suite:
2985 ** The system now obeys the constraint imposed by
2986 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2987 types form a lattice under type intersection.
2988 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2989 ** ASSOC now ignores NIL elements in an alist.
2990 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2991 and (1+ MOST-POSITIVE-FIXNUM) answers.
2992 ** The addition of a method with invalid qualifiers to a generic
2993 function does not cause an error to be signalled immediately;
2994 a warning is signalled, and the error is generated only on
2995 calling the generic function.
2996 * changed .fasl file version number, in part to add type codes for
2997 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2998 obscure ANSI requirements
3000 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3001 * fixed bug 148: failure to inline-expand a local function left
3002 garbage, confusing the compiler.
3003 * fixed bugs 3cd: structure slot readers perform type check if the
3004 slot can have an invalid value (i.e. it is either not initialized
3005 or can be written with a less specific slot writer).
3006 * bug fix: the compiler now traps array references to elements off
3007 the end of an array; previously, the bounds checking in some
3008 circumstances could go off-by-one.
3009 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3011 * type declarations for array element types now obey the description
3012 on the CLHS page "Declaration TYPE", as per discussions on
3013 sbcl-help around 2003-05-08. This means that a declaration
3014 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3015 declaration, all references to BAR will be asserted or assumed
3016 (with THE, so dependent on compiler policy) to involve objects of
3017 type FOO. Note that no such declaration is implied in
3018 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3019 * declared types of functions from the "Conditions"
3020 chapter. (reported by Paul Dietz)
3021 * bug fix: CERROR accepts a function as its first argument.
3022 * bug fix: NTH an NTHCDR accept a bignum as index
3023 arguments. (reported by Adam Warner)
3024 * optimization: character compare routines now optimize comparing
3025 against a constant character. (reported by Gilbert Baumann)
3026 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3027 argument now works properly on the MIPS platform.
3028 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3029 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3030 declared to have a functional type, does not cause an error
3032 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3033 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3034 * fixed bug: if last continuation of a deleted block has a
3035 destination, this destination should be deleted too. (reported by
3037 * fixed a bug in the bootstrap process: the host compiler's values
3038 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3039 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3040 test case from Patrik Nordebo)
3041 * improved the ability of the disassembler on the PPC platform to
3042 provide helpful disassembly notes.
3043 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3044 the class in more cases than previously.
3045 * bug fix: FILE-POSITION now understands :START and :END for
3046 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3047 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3048 8) data. (thanks to David Lichteblau)
3049 * bug fix: it is possible to add a method to a generic function
3050 without lambda list.
3051 * bug fix: reader failed to signal END-OF-FILE inside an
3052 object representation. (reported by Nikodemus Siivola)
3053 * fixed some bugs revealed by Paul Dietz' test suite:
3054 ** LAST and [N]BUTLAST should accept a bignum.
3055 ** condition slot accessors are methods.
3056 ** (VECTOR NIL) is a subtype of STRING.
3058 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3059 * minor incompatible change: some nonsensical specialized lambda
3060 lists (used in DEFMETHOD) which were previously ignored now signal
3062 * minor incompatible change: the system is now aware of the types of
3063 variables in the COMMON-LISP package, and will signal errors for
3064 most violations of these type constraints (where previously they
3065 were silently accepted).
3066 * minor incompatible change: COMPILE-FILE now uses the freedom
3067 afforded (ANSI 3.2.2.3) to use derived function types for
3068 functions defined in the same file. This also permits the system
3069 to warn on static type mismatches and function
3070 redefinition. (Currently it does not work with high DEBUG level.)
3071 * minor incompatible change: VALUES declaration is disabled.
3072 * When issuing notes, the compiler now signals a condition of type
3073 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3074 restart for use in user handlers. It is expected that the
3075 COMPILER-NOTE condition will eventually become a condition
3076 supertype to a hierarchy of note types, which will then be
3077 handleable in a similar fashion. However, at the moment, no such
3078 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3079 but it's an implementation detail, not a classification for the
3081 * Changes in type checking closed the following bugs:
3082 ** type checking of unused values (192b, 194d, 203);
3083 ** template selection based on unsafe type assertions (192c, 236);
3084 ** type checking in branches (194bc).
3085 * A short form of VALUES type specifier has ANSI meaning (it has
3086 increased the number of situations when SBCL cannot perform type
3088 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3089 keywords or constants is permissible.
3090 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3091 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3092 classes. (thanks to Antonio Martinez)
3093 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3094 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3095 argument to a pretty-print stream. Instead, it leaves any such
3096 operations to DESCRIBE-OBJECT methods.
3097 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3099 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3100 lambda lists. (thanks to David Lichteblau)
3101 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3102 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3103 (thanks to Gerd Moellmann)
3104 * fixed bug 246: increased compilation speed of long
3105 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3107 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3109 * DEFCONSTANT now throws a condition of type
3110 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3111 constant to a non-EQL value; CONTINUE and ABORT restarts
3112 respectively change and preserve the value.
3113 * fixed bug 63: The code walker, part of the implementation of CLOS,
3114 is now better at handling symbol macros.
3115 * bug fix: There is no longer an internal implementation type named
3116 CL:LENGTH. (reported by Raymond Toy)
3117 * bug fix: In macro-like defining macros/special operators the
3118 implicit block does not enclose the lambda list.
3119 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3120 enclosed in parentheses) are not suitable as type specifiers, and
3121 their use properly signals an error now.
3122 * bug fix: An argument count mismatch for a type specifier in code
3123 being compiled no longer causes an unhandled error at compile
3124 time, but signals a compile-time warning.
3125 * fixed simple vector readable printing
3126 * bug fix: DESCRIBE takes more care over whether the class
3127 precedence list slot of a class is bound before accessing it.
3128 (reported by Markus Krummenacker)
3129 * bug fix: FORMATTER can successfully compile pretty-printer format
3130 strings which use variants of the ~* directive inside.
3131 * bug fix: SEARCH now applies its TEST predicate to the elements of
3132 the arguments in the correct order. (thanks to Wolfhard Buss)
3133 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3134 in type inference. (thanks to Robert E. Brown)
3135 * bug fix: Reading in symbols with an explicit package name of ""
3136 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3137 * fixed some bugs revealed by Paul Dietz' test suite:
3138 ** NIL is now allowed as a structure slot name.
3139 ** Arbitrary numbers, not just REALs, are allowed in certain
3140 circumstances in LOOP for-as-arithmetic clauses.
3141 ** Multiple class redefinitions before slot access no longer
3142 causes a type error.
3143 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3144 association between the name and a class.
3145 ** Generic functions with non-standard method-combination and over
3146 five methods all of which return constants no longer return NIL
3147 after the first few invocations. (thanks to Gerd Moellmann)
3148 ** CALL-NEXT-METHOD with no arguments now passes the original
3149 values of the arguments, even in the presence of assignment.
3150 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3152 ** DISASSEMBLE works with closures and funcallable instances.
3153 ** ADD-METHOD now returns the generic function, not the new method.
3154 ** FIND-METHOD signals an error if the lengths of the specializers
3155 is incompatible with the generic function, even if the ERRORP
3157 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3158 which its argument is a member.
3159 ** DEFCLASS only redefines the class named by its class-name
3160 argument if that name is the proper name of the class;
3161 otherwise, it creates a new class.
3162 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3163 of the UNBOUND-SLOT condition to the name of the slot.
3164 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3165 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3166 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3167 SLOT-MAKUNBOUND in the specified fashion.
3169 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3170 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3171 cross-compilation host. As a consequence, we can now bootstrap our
3172 way up to SBCL starting with a bare gcc toolchain and human-readable
3173 source code (first the source to CLISP, then the source to SBCL).
3174 * A contributed module containing a partial implementation of the
3175 simple-streams interface has been included. (thanks to Rudi
3177 * A contributed module implementing the RFC1321 Message Digest
3178 Algorithm, known as MD5, has been included.
3179 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3180 no longer has any effect, as the code controlled by this feature
3181 has been deleted. (As far as we know, no-one has ever built using
3182 this feature, and its semantics were confused in any case).
3183 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3184 work on conditions (as required by the ANSI specification),
3185 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3186 expected behaviour on conditions. Users should note, however,
3187 that such behaviour is not required by the ANSI specification,
3188 and so use of this behaviour may render their code unportable.
3189 * fixed some bugs revealed by Paul Dietz' test suite:
3190 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3192 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3193 ** SXHASH on condition objects no longer returns NIL.
3194 ** :ALLOCATION :CLASS slots are better treated; their values are
3195 updated on class redefinition, and initforms inherited from
3196 superclasses are applied.
3197 ** REMOVE-METHOD returns its generic function argument even when
3198 no method was removed.
3199 ** SHARED-INITIALIZE now initializes the values of the requested
3200 slots, including those with :ALLOCATION :CLASS.
3201 ** ALLOCATE-INSTANCE now works on structure classes defined via
3202 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3204 ** SLOT-EXISTS-P now works on conditions, as well as structures
3206 ** MAKE-LOAD-FORM now has the required methods on
3207 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3208 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3209 keyword, and now implements the SLOT-NAMES argument.
3210 ** methods with &OPTIONAL arguments no longer allow too many
3211 arguments to be passed in the call without error.
3212 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3213 option is consistent with the required arguments of the generic
3214 function lambda list.
3215 * bug fix: REQUIRE accepts a string designator. (Thanks to
3217 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3218 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3219 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3220 * bug fix: The compiler now checks for duplicated variables in macro
3222 * bug fix: SETQ on globals returns the correct value.
3223 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3224 not a COMPILER-ERROR (followed by some other strange error on
3225 choosing the CONTINUE restart).
3226 * bug fix: make.sh and friends are now more consistent in the way that
3227 they look for GNU "make".
3229 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3230 * experimental native threads support (on x86 Linux >=2.4 only).
3231 This is not compiled in by default: you need to add :SB-THREAD to
3232 the target features. See the "Beyond ANSI" chapter of the manual
3234 * fix for longstanding nonANSIism: The old distinction between
3235 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3236 The return value from CL:FIND-CLASS is now a CLOS class, and
3237 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3238 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3239 * An interface to the MetaObject Protocol, as described in Kiczales,
3240 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3241 MIT Press, 1991, is available from the SB-MOP package.
3242 * incompatible change: the SB-PCL package should now be considered
3243 a private implementation detail, and no longer a semi-private MOP
3245 * minor incompatible change: due to rearrangement for threads, the
3246 control stack and binding stack are now allocated at arbitrary
3247 addresses instead of being hardcoded per-port. Users affected by
3248 this probably have to be doing advanced things with shared
3249 libraries, and will know who they are.
3250 * minor incompatible change: Previously, all --eval forms used were
3251 processed with READ before any of them were processed with EVAL.
3252 Now each --eval form is processed with both READ and EVAL before
3253 the next --eval form is processed. (Thus package operations like
3254 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3255 work as the user might reasonably expect.)
3256 * minor incompatible change: *STANDARD-INPUT* is now only an
3257 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3259 * minor incompatible change: Y-OR-N-P is now character-oriented,
3260 not line oriented. Also, YES-OR-NO-P now works without errors.
3261 (thanks to Antonio Martinez)
3262 * sb-aclrepl module improvements: an integrated inspector, added
3263 repl features, and a bug fix to :trace command.
3264 * Known functions, which cannot be open coded by the backend, are
3265 considered to be able to check types of their arguments. (fixing
3266 a bug report by Nathan J. Froyd)
3267 * fixed a bug in computing method discriminating functions: It is
3268 now possible to define methods specialized on classes which have
3269 forward-referenced superclasses. (thanks to Gerd Moellmann)
3270 * fixed evaluation order in optional entries (reported by Gilbert
3272 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3273 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3274 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3275 required-by-AMOP NAME argument, as well as CLASS and
3276 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3277 * fixed bug 20: DEFMETHOD can define methods using names that are
3278 not the proper names of classes to designate class specializers.
3279 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3280 Unix file descriptors, instead of blowing up. (thanks to Antonio
3282 * Garbage collection refactoring: user-visible change is that a
3283 call to the GC function during WITHOUT-GCING will not do garbage
3284 collection until the end of the WITHOUT-GCING. If you were doing
3285 this you were probably losing anyway.
3286 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3287 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3288 TYPEP the latter but not the former.
3289 * The compiler issues a full WARNING for calls to undefined functions
3290 with names from the CL package.
3291 * MAP-INTO for a vector destination is open coded. (reported by
3292 Brian Downing on c.l.l)
3293 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3294 documentation string.
3295 * fixed some bugs revealed by Paul Dietz' test suite:
3296 ** COPY-ALIST now signals an error if its argument is a dotted
3298 ** Condition slots are now accessed more correctly in the presence
3299 of multiple initargs for a given slot.
3300 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3301 exclude restarts of the same name associated with a different
3303 ** DEFCLASS of forward-referenced classes with another
3304 forward-referenced class in the superclasses list no longer
3306 ** Condition slots are now initialized once each, not multiple
3307 times. (thanks to Gerd Moellmann)
3308 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3310 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3311 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3312 arguments contain duplicated elements.
3313 ** RESTART-CASE understands local macros.
3314 ** RESTART-CASE associates exactly its own restarts with a condition.
3315 ** ENDP in safe mode checks its argument to be of type LIST.
3316 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3317 in question is unbound.
3318 ** Optimized MAKE-INSTANCE functions no longer cause internal
3319 assertion failures in the presence of duplicate initargs.
3320 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3321 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3322 propagated even in the ctor optimized implementation of
3324 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3326 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3327 * a better implementation of SXHASH on (simple) bit vectors,
3328 measured both in execution speed and in distribution of results
3329 over the positive fixnums, has been installed. Likewise, a better
3330 implementation of EQUAL for simple bit vectors is now available.
3331 * fixed CEILING optimization for a divisor of form 2^k.
3332 * fixed bug 240 (emitting extra style warnings "using the lexical
3333 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3334 by Antonio Martinez)
3335 * fixed SXHASH, giving different results for NIL depending on type
3336 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3337 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3338 variable. (found by Rolf Wester)
3339 * SBCL does not ignore type declarations for special
3340 variables. (reported by rif on c.l.l 2003-03-05)
3341 * some bug fixes in contrib/sb-aclrepl/
3342 * fixed some bugs revealed by Paul Dietz' test suite:
3343 ** a bug in the CONS type specifier, whereby the CAR and CDR
3344 types got intertwined, has been fixed;
3345 ** the type system is now able to reason about the interaction
3346 between INTEGER and RATIO types more completely;
3347 ** APPEND, [N]REVERSE and NRECONC check that those their
3348 arguments, which must be proper lists, are really so;
3349 ** An array specialized to be unable to hold elements has been
3350 implemented, as required -- yes, really -- by ANSI;
3351 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3352 on malformed property lists;
3354 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3355 * incompatible packaging change: in line with Unix convention,
3356 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3357 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3358 * REQUIRE and PROVIDE are now optionally capable of doing something
3359 useful. See the documentation string for REQUIRE.
3360 * infrastructure for a managed SBCL contrib system: contributed
3361 modules in this release include:
3362 ** the ASDF system definition facility;
3363 ** an interface to the BSD Sockets API;
3364 ** an ACL-like convenience interface to the repl;
3365 (thanks to Kevin Rosenberg)
3366 ** an implementation of ROTATE-BYTE, with efficient implementation
3368 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3369 gives a closer approximation to the right answer than previously.
3370 (thanks to Raymond Toy)
3371 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3372 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3373 optional environment arguments, as required by ANSI.
3374 * fixed bugs in other functions taking environment objects, allowing
3375 calls with an explicit NIL environment argument to be compiled
3377 * fixed bug 228: primary return values from
3378 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3379 COMPILE or FUNCTION.
3380 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3381 :TYPE will no longer signal errors on innocuous objects.
3382 * fixed bug 231b: SETQ is better at respecting type declarations in
3383 the lexical environment.
3384 * fixed a bug in DEFCLASS: classes named by symbols with no or
3385 unprintable packages can now be defined.
3386 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3387 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3388 * fixed compiler failure related to checking types of functions.
3389 (reported by Robert E. Brown)
3390 * the compiler is now much more consistent in its error-checking
3391 treatment of bounding index arguments to sequence functions: in
3392 (SAFETY 3) code, errors will be signalled in almost all cases if
3393 invalid sequence bounding indices are passed to functions defined
3394 by ANSI to operate on sequences.
3395 * fixed a bug in the build procedure: documentation of SBCL-specific
3396 packages is now preserved and available in the final Lisp image.
3397 * lifted FDEFINITION lookup out of loops in the implementation of
3398 many list operations. (thanks to Robert E. Brown)
3399 * fixed a bug in the reader: the #n# reader macro now works for
3400 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3401 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3402 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3403 E. Brown and Tony Martinez respectively)
3404 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3405 SLOT-BOUNDP: in particular, it is now able to optimize them much
3406 better, and is now not vulnerable to having packages renamed.
3407 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3408 always called when a slot is not present in an instance. (thanks
3410 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3411 longer signal an error on unreading a character following EOF on
3412 the previous constituent stream. (thanks to Tony Martinez)
3413 * fixed some bugs revealed by Paul Dietz' test suite:
3414 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3415 not just nonnegative fixnums;
3416 ** the logical bit-array operators such as BIT-AND now accept an
3417 explicit NIL for their "opt-arg" argument (to indicate a
3418 freshly-consed result bit-array);
3419 ** ELT now signals an error on an invalid sequence index in safe
3421 ** the type system is now cleverer about negations of numeric
3422 types, and consequently understands the BIGNUM and RATIO types
3424 ** the type system is now cleverer about the interaction between
3425 INTEGER and RATIO types: while bugs still remain, many more
3426 cases are accurately computed;
3427 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3428 if it is in the last clause;
3429 ** CONSTANTLY now correctly returns a side-effect-free function in
3431 ** DECLARE is no longer treated as a special-operator; in
3432 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3433 * incremented fasl file version number due to the change in the
3434 DEFSTRUCT-SLOT-DESCRIPTION structure.
3436 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3437 * minor incompatible change: code processed by the "interpreter" or
3438 EVAL now has a compilation optimization policy of (DEBUG 2)
3439 (changed from (DEBUG 1)) to improve debuggability of interactive
3440 development, and to allow the use of the debug RETURN command in
3442 * an experimental implementation of the RETURN command for the
3443 debugger has been included. (thanks to Frederik Kuivinen)
3444 * fixed bug 62: constraints were not propagated into a loop.
3445 * fixed bug in embedded calls of SORT (reported and investigated by
3447 * fixed some bugs revealed by Paul Dietz' test suite:
3448 ** printing and reading of arrays with some dimensions having
3449 length 0 (thanks to Gerd Moellmann);
3450 ** BOA constructor with &AUX argument without a default value does
3451 not cause a type error;
3452 ** CONSTANTP now returns true for all self-evaluating objects.
3454 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3455 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3456 accessors that are related by inheritance, as specified in the
3457 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3458 Valtteri Vuorikoski)
3459 * The compiler is now able to inline functions that were defined in
3460 a complex lexical environment (e.g. inside a MACROLET).
3461 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3463 * Support for the upcoming FreeBSD-5.0 release has been included.
3464 (thanks to Dag-Erling Smorgrav)
3465 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3466 effect when it is not in a toplevel context.
3467 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3468 stand a better chance of being correct. (thanks to Gerd
3470 * fixed bug in COERCE, which now signals an error on coercing a
3471 rational to a bounded real type which excludes the expected
3473 * The compiler is now able to derive types more accurately from the
3474 COERCE and COMPILE functions.
3475 * fixed bug 223: functional binding is considered to be constant
3476 only for symbols in the CL package.
3477 * fixed bug 231: SETQ did not check the type of a variable being set
3478 (reported by Robert E. Brown)
3479 * A new optimization for MAKE-INSTANCE has been included, fixing
3480 various bugs (including relating to :ALLOCATION :CLASS slots and
3481 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3483 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3484 ** As required by ANSI, LOOP now disallows anonymous collection
3485 clauses such as COLLECT I in conjunction with aggregate boolean
3486 clauses such as THEREIS (= I 1);
3487 ** LOOP now signals an error when any variable is reused in the
3488 same loop (including the potentially useful construct analogous
3489 to WITH A = 1 WITH A = (1+ A);
3490 ** IT is only a special loop symbol within the first clause of a
3491 conditional loop clause;
3492 ** LOOP with a typed iteration variable over a hashtable now
3493 signals a type error iff it should.
3494 * fixed some other bugs revealed by Paul Dietz' test suite:
3495 ** FILE-STREAM now names the class previously known as FD-STREAM;
3496 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3497 argument) no longer signals an error;
3498 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3499 of the slot symbol, rather than using the current package
3500 ((:CONC-NAME "") continues to intern the slot's name in the
3502 * incremented fasl file version number, because of the incompatible
3503 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3504 of the new implementation of DEFINE-COMPILER-MACRO.
3506 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3507 * Support for building SBCL for MIPS platforms running in
3508 little-endian mode has now been checked in, and basic
3509 functionality on said platforms verified.
3510 * minor incompatible change: PCL now records the pathname of a file
3511 in which methods and the like are defined, rather than its
3513 * minor incompatible change: TRUENAME now considers the truename of
3514 a file naming a directory to be the pathname with :DIRECTORY
3515 component indicating that directory.
3516 * minor incompatible change: a NAMED clause in the extended form of
3517 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3518 reason for the previous behaviour is unclear.
3519 * more systematization and improvement of CLOS and MOP conformance
3520 in PCL (thanks to Gerd Moellman and Pierre Mai):
3521 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3523 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3524 primary methods with no specializers;
3525 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3527 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3528 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3529 FORWARD-REFERENCED-CLASSes; error reporting on
3530 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3532 ** SXHASH on CLOS instances now uses a slot internal to the
3533 instance to return different numbers on distinct instances,
3534 while preserving the same return value through invocations of
3536 ** DEFMETHOD signals errors when methods with longer incongruent
3537 lambda lists are added to generic functions;
3538 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3539 CLASS, as specified in AMOP;
3540 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3541 on the order returned by the primary method for classes of
3542 class STANDARD-CLASS;
3543 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3544 * fixed some bugs shown by Paul Dietz' test suite:
3545 ** DOLIST puts its body in TAGBODY;
3546 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3548 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3549 value producing form;
3550 ** if more variables are given to PROGV than values, extra
3551 variables are bound and made to have no value;
3552 ** NSUBSTITUTE on list arguments gets the right answer with
3554 ** ELT signals an error of type TYPE-ERROR when the index argument
3555 is not a valid sequence index;
3556 ** LOOP signals (at macroexpansion time) an error of type
3557 PROGRAM-ERROR when duplicate variable names are found;
3558 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3559 ** FUNCALL of special-operators now cause an error of type
3561 ** PSETQ now works as required in the presence of side-effecting
3562 symbol-macro places;
3563 ** NCONC accepts any object as its last argument;
3564 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3566 ** loop-for-as-package does not require a package to be explicitely
3568 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3570 * fixed bug 166: compiler preserves "there is a way to go"
3571 invariant when deleting code.
3572 * fixed bug 172: macro lambda lists with required arguments after
3573 &REST arguments now cause an error to be signalled. (thanks to
3575 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3576 bug. (thanks to Matthew Danish)
3577 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3579 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3580 arguments are lexically rebound. (thanks to Gerd Moellmann and
3582 * fixed bug 194: error messages are now more informative when there
3583 is no primary method applicable in a call to a generic
3584 function. (thanks to Gerd Moellmann)
3585 * fixed bug in command line argument checking (thanks to Julian
3587 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3588 (thanks to Matthew Danish)
3589 * incremented fasl file version number, because of the
3590 SXHASH-related changes in the layout of CLOS data structures
3592 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3593 * minor incompatible change: The runtime (the Unix executable named
3594 "sbcl") is now much pickier about the .core files it will load.
3595 Essentially it now requires .core files to descend from the same
3596 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3597 as the runtime does. (The intent is to prevent the crashes which
3598 can occur, and which can even be reported as mysterious failures,
3599 when people patch the sources or change the build parameters
3600 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3601 sbcl and .core files.)
3602 * fixed bug: VALUES-LIST is no longer optimized away.
3603 * fixed bug 142: The FFI conversion of C string values to Lisp
3604 string values no longer conses excessively. (thanks to Nathan
3605 Froyd porting Raymond Toy's fix to CMU CL)
3606 * began to systematize and improve MOP conformance in PCL (thanks to
3607 Nathan Froyd, Gerd Moellman and Pierre Mai):
3608 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3610 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3611 ** FINALIZE-INHERITANCE is now called on class finalization;
3612 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3613 argument precedence order.
3614 * fixed bug 202: The compiler no longer fails on functions whose
3615 derived types contradict their declared type.
3616 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3617 so it can be non-toplevel.
3618 * The fasl file version number has changed (because of the new
3619 implementation of DEFMACRO).
3620 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3621 safe code, that any length requirement by their type-specifier
3622 argument is valid. The exceptions to this are described in bug
3624 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3625 functions now check the types of their inputs as required by ANSI.
3626 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3627 introduced symbol is DECLAREd to be SPECIAL.
3628 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3629 * fixed bug: :COUNT argument to sequence functions may be negative
3630 * fixed bug: body of DO-SYMBOLS may contain declarations
3631 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3632 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3633 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3634 symbol macro only once
3635 * fixed printing of call frame when argument list is unavailable
3636 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3637 * compiler no longer signals WARNING on unknown keyword
3640 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3641 * A beta-quality port to the mips architecture running Linux,
3642 based on the old CMUCL backend, has been made. It has been tested
3643 on a big-endian kernel, and works sufficiently well to be able to
3644 rebuild itself; it has not been tested in little-endian mode.
3645 * fixed an inconsistency between gencgc.c and purify.c which made
3646 dumping/loading .core files unreliable
3647 * fixed bug 120a: The compiler now deals correctly with IFs where
3648 the consequent is the same as the alternative, instead of
3649 misderiving the return type. (thanks to Alexey Dejneka)
3650 * fixed bug 113: Logical pathnames are now dumpable (the logical
3651 host is resolved at load-time, throwing an error if it is not
3653 * fixed bug 174: FORMAT's error message is slightly clearer when a
3654 non-printing character is used in a format directive.
3655 * fixed several bugs in compiler checking of type declarations, i.e.
3656 violations of the Python "declarations are assertions" principle
3657 (thanks to Alexey Dejneka)
3658 * fixed several bugs in PCL's error checking (thanks to Gerd
3660 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3662 * fixed bug in compilation of functions as first class values
3663 (thanks to Antonio Martinez-Shotton)
3664 * The compiler's handling TYPE-ERRORs which it can prove will
3665 inevitably happen at runtime has been cleaned up and corrected
3666 in several ways. (thanks to Alexey Dejneka)
3667 * improved argument type checking for various basic arithmetic
3668 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3669 lavished on them in the past that they can be compiled in many
3670 ways in different special cases
3671 * fixed bug 181: compiler checks validity of user supplied type
3673 * cleaned up code flushing in optimization: Function calls which
3674 should signal errors for safety purposes (e.g. which ANSI says
3675 should signal errors when their arguments are of incorrect type)
3676 are no longer optimized away.
3677 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3678 * incremented fasl file version number, because changes in the
3679 implementation of sequence functions like COERCE caused
3680 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3681 in old inline expansions) to become undefined. (Actually these
3682 changes were later undone, so we might very well be binary
3683 compatible with 0.7.7 after all, but leaving the version number
3684 incremented seemed like the simplest and most conservative
3687 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3688 * An alpha-quality port to the parisc architecture running Linux,
3689 based on the old CMUCL backend, has been made. This, even more so
3690 than the other backends, should be considered still a work in
3691 progress; known problems include that the Linux kernel in 64-bit
3692 mode does not propagate the correct sigcontext structure to
3693 userspace, and consequently SBCL on a parisc64 kernel will not
3695 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3696 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3697 suppressed.) Also now that the compiler is looking at declarations
3698 in the environment, it checks optimization declarations as well,
3699 and suppresses inlining when (> DEBUG SPEED).
3700 * More fixes have been made to treatment of floating point exception
3701 treatment and other Unix signals. In particular, floating point
3702 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3703 * The detection and handling of control stack exhaustion (infinite
3704 or very deeply nested recursion) has changed. Stack exhaustion
3705 detection is now done by write-protecting pages at the OS level
3706 and applies at all optimization settings; when found, a
3707 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3708 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3709 be caught using IGNORE-ERRORS.
3710 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3711 correctly when transforming recursive LABELS functions to LETs.
3712 (thanks to Alexey Dejneka)
3713 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3714 that are names of constants or global variables.
3715 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3716 alien routines with docstrings.
3717 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3718 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3720 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3721 (thanks to Eric Marsden)
3722 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3723 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3724 * Bug fix: The SPARC backend can now compile functions involving
3725 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3726 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3727 to a functions expecting a PATHNAME-DESIGNATOR.
3728 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3729 lambda lists. (thanks to Alexey Dejneka)
3730 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3731 functions so that EXPORTing the name of the class doesn't cause
3732 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3733 to Antonio Martinez for reporting this)
3734 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3735 constant-folded without failing an assertion. (thanks to Einar
3736 Floystad Dorum for reporting this)
3737 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3738 types are now dealt with more correctly by the compiler.
3739 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3740 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3741 behaviour analogous to RENAME-FILE. This puts its behaviour more
3742 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3744 * The fasl file version number has changed again. (because of the
3745 bug fix involving the names of PCL MAKE-INSTANCE functions)
3747 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3748 * bug fix: Floating point exceptions are treated much more
3749 consistently on the x86/Linux and PPC/Linux platforms.
3750 * Array initialization with :INITIAL-ELEMENT is now much faster for
3751 cases when the compiler cannot open code the array creation, but
3752 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3753 array accesses have also seen a speed increase.
3754 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3755 specified. (This was at the root of some bad interactions between
3756 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3758 * bug fix: Internal error arguments for undefined functions are now
3759 computed correctly on the PPC/Linux platform.
3760 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3761 Raymond Toy's patch for CMU CL)
3762 * Support for the Solaris 9 operating environment has been included
3763 (thanks to Daniel Merritt)
3764 * A very ugly but hopefully complete draft of the missing FFI chapter
3765 of the manual has been created by reformatting the corresponding
3766 CMU CL manual chapter into (currently very ugly and incoherent)
3767 DocBook and bringing it up to date for SBCL behavior. Thus, the
3768 manual is now essentially complete, at least by my extreme
3769 once-and-only-once standards, whereby it's acceptable to refer to
3770 the doc strings of SB-EXT functions as the primary documentation.
3771 * The fasl file version number has changed again, due to cleanup of
3772 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3773 is no longer a static symbol.)
3775 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3776 * SBCL now builds with OpenMCL (version 0.12) as the
3777 cross-compilation host; also, more progress has been made toward
3778 bootstrapping under CLISP.
3779 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3781 * bug 158 fixed: The compiler can now deal with integer loop
3782 increments different from 1; fixing this turned out also to fix
3784 * bug 169 fixed: no more bogus warnings about using lexical bindings
3785 despite the presence of perfectly good SPECIAL declarations (thanks
3786 to David Lichteblau)
3787 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3788 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3789 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3791 * bug 180 fixed: Method combination specifications no longer ignore
3792 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3793 * bug fix: Structure type predicate functions now check their argument
3794 count as they should.
3795 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3796 correctly. (thanks to Pierre Mai)
3797 * minor incompatible change: The --noprogrammer option is deprecated
3798 in favor of the new --disable-debugger option, which is very similar.
3799 (The major difference is that it takes effect at a slightly different
3800 time at startup, causing handling of errors in --sysinit and
3801 --userinit files will be affected differently.) The
3802 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3803 been added to allow this functionality to be controlled from ordinary
3804 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3805 maintainers, who might want to run non-interactive scripts to
3806 build SBCL cores which will later be used interactively.)
3807 * minor incompatible change: The LOAD function no longer, when given
3808 a wild pathname to load, loads all files matching that pathname.
3809 Instead, an error of type FILE-ERROR is signalled.
3811 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3812 * bug 147 fixed: The compiler preserves its block link/count
3813 invariants more correctly now so that it doesn't crash. (thanks
3815 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3817 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3818 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3819 no-value-for-this-character as NIL (as specified by ANSI).
3820 * HOST-NAMESTRING on physical pathnames now returns a string that is
3821 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3822 (thanks to Christophe Rhodes)
3823 * The Alpha port handles icache flushing more correctly. (thanks to
3825 * More progress has been made toward bootstrapping under CLISP. (thanks
3826 to Christophe Rhodes)
3827 * The fasl file format has changed again, because dynamic loading
3828 on OpenBSD (which has non-ELF object files) motivated some cleanups
3829 in the way that foreign symbols are transformed and passed around.
3830 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3831 is no longer treated as whitespace by the reader, but instead as
3832 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
3833 |A
\x7fB|, instead of A as it used to.
3835 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3836 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3837 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3838 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3839 this as of 0.7.1.45, but was left out of the previous news section
3840 (thanks to Dan Barlow)
3841 * SBCL now runs on the Solaris operating system on SPARC architectures
3842 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3843 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3844 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3845 * SPARC backend cleanups, allowing builds of cores optimized for V8
3846 and V9 SPARCS, and also emission of code targeted to a particular
3847 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3849 * SBCL is closer to bootstrapping under CLISP, thanks to various
3850 fixes by Christophe Rhodes.
3851 * The fasl file format has changed again, to allow the compiler's
3852 INFO database to support symbol macros.
3853 * The user manual (in doc/) is formatted into HTML more nicely.
3854 (thanks to coreythomas)
3855 * The system is smarter about SUBTYPEP relationships, especially
3856 those involving NOT types (including types such as ATOM which are
3857 represented internally using NOT types). Thus SUBTYPEP is less
3858 likely to return (VALUES NIL NIL) in general, and in particular
3859 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3861 * The fasl file format has changed again, because the internal
3862 representation of types now includes a new slot to support the new
3863 SUBTYPEP-of-NOT-types logic.
3864 * (not a change in the main branch of SBCL, but a related prototype
3865 which can hopefully be merged into the main branch of SBCL in the
3866 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3867 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3868 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3869 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3870 dispatch macro character combinations. (thanks to Alexey Dejneka)
3871 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3872 that superficially look like logical namestrings correctly.
3873 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3875 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3876 default supplied-p) for &optional and &key arguments. (thanks to
3879 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3880 * incompatible change: The compiler is now less aggressive about
3881 tail call optimization, doing it only when (> SPACE DEBUG) or
3882 (> SPEED DEBUG). (This is an incompatible change because there are
3883 programs which relied on the old CMU-CL-style behavior to optimize
3884 away their unbounded recursion which will now die of stack overflow.)
3885 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3886 for non-GENCGC systems has been increased to 20M (since that
3887 seems much closer to the likely performance optimum for modern
3888 systems than the old 4M value was)
3889 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3890 and *DEBUG-PRINT-LEVEL*
3891 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3892 of CMU CL's support for SPARC, and various endianness and other
3893 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3894 * new syntactic sugar for the Unix command line: --load foo.bar is now
3895 an alternate notation for --eval '(load "foo.bar")'.
3897 ** The system now detects stack overflow and handles it gracefully,
3898 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3899 optimization settings. (This is a good thing in general, and
3900 its introduction in this version should be particularly timely
3901 for anyone whose code fails because of suppression of tail
3903 ** The system now hunts for the C variable "environ" in a more
3904 devious way, to avoid segfaults when the C library version differs
3905 between compile time and run time. (thanks to Christophe Rhodes)
3906 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3907 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3908 ** The compiler no longer issues bogus style warnings for undefined
3909 classes in the same source file as the DEFCLASSes which defined
3910 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3912 ** fixes in CONDITION class precedence list for undefined function
3913 errors (thanks to Alexei Dejneka)
3914 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3915 correctly. (thanks to Dan Barlow)
3916 ** portability fixes aiming at bootstrapping under CLISP (thanks
3917 to Dave McDonald and Christophe Rhodes)
3918 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3919 ** fixes in type translation and and type inference (thanks to
3921 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3922 ** various fixes in the new ports (thanks to Dan Barlow)
3923 * several changes related to debugging:
3924 ** suppression of tail recursion, as noted above
3925 ** stack overflow detection, as noted above
3926 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3927 is now the default. (For some time encapsulation has been more
3928 reliable than the breakpoint-based :ENCAPSULATE NIL
3929 implementation, at least on X86 systems; and I just noticed that
3930 encapsulation also seems closer to the spirit of the ANSI
3933 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3935 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3936 up properly again. (There was a packaging bug in 0.7.0 which
3937 left their definitions in SB-SYS::LOAD-FOREIGN and
3938 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3939 vital for most things which interface to C-level interfaces,
3940 like extensions working with sockets or databases or
3941 Perl-compatible regexes or whatever, and the need to fix
3942 this bug is the main reason that 0.7.1 was released so
3944 ** DEFGENERIC is now choosier about the methods it redefines, so that
3945 reLOADing a previously-LOADed file containing DEFGENERICs does
3946 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3947 cycle now works as it should. (thanks to Alexey Dejneka)
3948 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3949 fixed by Christophe Rhodes. (He actually submitted this patch
3950 months ago, and I delayed until after 0.7.0.)
3951 ** Bug 111 (internal compiler confusion about runtime checks on
3952 FUNCTION types) was fixed by Alexey Dejneka.
3953 * Some internal cleanups (getting rid of variables which aren't
3954 needed now that the byte interpreter is gone) caused the fasl
3955 file format number to change again.
3957 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3958 * major incompatible change: The default fasl file extension, i.e. the
3959 default extension for files produced by COMPILE-FILE, has changed
3960 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3962 ** There are many changes in the implementation of the compiler.
3963 SBCL is now essentially a compiler-only implementation of ANSI
3964 Common Lisp. EVAL still "interprets" a few special cases, but
3965 almost all the interesting cases are handled by creating
3966 a LAMBDA expression, calling COMPILE on it, then calling
3967 FUNCALL on the result.
3968 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3969 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3970 Since the code is newer, there might still be some new bugs
3971 (though not as many as before Martin Atzmueller's fixes:-). But
3972 the new code is substantially simpler and clearer, and hopefully
3973 any remaining bugs will be simpler, less fundamental, and more
3974 fixable then the bugs in the old code.
3975 ** The revised compiler is still a little unsteady on its feet.
3977 *** The debugging information it produces (particularly the names
3978 of FUNCTION objects) is sometimes much less useful than what
3979 the old compiler produced.
3980 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3981 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3982 within a MACROLET) has been temporarily weakened.
3983 ** There are new compiler optimizations for various functions:
3984 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3985 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3986 *** the math functions TRUNCATE, FLOOR, and CEILING
3987 *** the function-of-all-trades COERCE
3988 Mostly these should be transparent, but there's one
3989 potentially-annoying problem (bug 117): when the compiler
3990 inline-expands a function and does type analysis on the result,
3991 it can create control paths which have type mismatches, and
3992 when it can't prove that those control paths aren't taken,
3993 it will issue WARNINGs about the type mismatches. This is
3994 a particular problem in practice for the new sequence functions.
3995 It's not clear how this should be fixed, and for now, a
3996 workaround is given in the entry for 117 in the BUGS file.
3997 ** (Because of the interaction between the two previous items --
3998 occasional inlining problems and new inline expansions -- some
3999 of the new sequence function optimizations won't really kick in
4000 completely until debugging information, and then inlining, are
4001 straightened out in some future version.)
4002 * minor incompatible changes:
4003 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4004 DIRECTORY no longer implicitly promotes NIL slots of its
4005 pathname argument to :WILD. In particular, when you ask for the
4006 contents of a directory (which you used to be able to do without
4007 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4008 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4009 ** changes in behavior that ANSI explicitly defines to be
4010 implementation dependent:
4011 *** The new compiler-only implementation still conforms with ANSI,
4012 but acts a little different than before. Besides the obvious
4013 changes in performance tradeoffs (that the cost per form passed
4014 to EVAL has gone up, and the cost per form executed by EVAL
4015 has gone down), the behavior of the system changes a little
4016 because there are no longer any interpreted function objects.
4017 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4018 e.g. doing COMPILE on the output of interactive DEFUN is
4020 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4022 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4023 has changed from (:CL) to NIL.
4024 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4025 e.g. #\Newline and #\Tab, don't have names specified in the
4026 ANSI Common Lisp standard, is now based on their ASCII symbolic
4027 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4028 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4029 are no longer used for output.
4030 ** changes in internal implementation constants:
4031 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4032 4 million. (If your application spends a lot of time GCing and
4033 you have a lot of RAM, you might want to experiment with
4034 increasing it even more.)
4035 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4036 However, almost all old code should still continue to work without
4037 immediate update, as SB-C-CALL is now a (deprecated) nickname
4039 ** Old operator names in the style DEF-FOO are now deprecated in
4040 favor of new corresponding names DEFINE-FOO, for consistency with
4041 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4042 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4043 internal symbols, but a few supported extensions like
4044 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4045 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4046 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4047 etc. as you get deeper into recursive calls to the debugger
4048 command loop, instead of the old "5]", "5]]", "5]]]"
4049 sequence. (I was motivated to do this when squabbles between
4050 ILISP and SBCL left me very deeply nested in the debugger. In the
4051 short term, this change will probably provoke more ILISP/SBCL
4052 squabbles, but hopefully it will be an improvement in the long run.)
4053 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4054 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4055 function, since declaiming return types involving aliens is
4056 (1) annoyingly messy to do by hand and (2) vital to efficient
4057 compilation of code which calls such functions.
4058 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4059 longer reexported by the SB-EXT package. They're solely useful
4060 for alien code, so it seems more logical that you should get
4061 them from the SB-ALIEN package, not in SB-EXT.
4062 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4063 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4064 features. Instead, the code that they used to control is always
4065 built into the system.
4066 * many other bug fixes
4067 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4068 advantage of the new EVAL-WHEN stuff and to clean them up in
4069 general, and they are now more ANSI-compliant in a number of
4070 ways. Martin Atzmueller is responsible for a lot of this.
4071 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4073 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4074 *** correct ERROR type for various file operations
4075 *** some fixes for Lisp streams
4076 *** DEFMETHOD syntax checking
4077 *** changing old weird representation of debug information as
4078 strings (which, among their other deficiencies, don't transform
4079 correctly when you rename packages, and don't change their
4080 print representation when you change things like *PACKAGE*
4081 and *PRINT-LENGTH*) to symbols and lists of symbols
4082 He also made several improvements and fixed several bugs in DESCRIBE.
4083 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4085 *** misbehavior of WRITE-STRING/WRITE-LINE
4086 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4087 and several other LOOP problems as well
4088 *** DIRECTORY when similar filenames are present
4089 *** DEFGENERIC with :METHOD options
4090 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4091 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4092 *** argument ordering in FIND with :TEST option
4093 *** mishandled package designator argument in APROPOS-LIST
4094 *** various problems in the backquote readmacro
4095 *** a bug in APROPOS
4096 *** probably some others that I'm not describing very well here,
4097 since the CVS log documents them by reference to sbcl-devel
4098 messages, and the SourceForge archives aren't working well.:-(
4099 ** Dan Barlow improved the Alpha port (and is making progress on the
4100 PPC port, for those of you who think different).
4101 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4102 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4103 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4104 continues to work on the SPARC port (for those of you in a position
4105 to look down upon our little PC-compatible boxes from a great height).
4106 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4107 and uses that copy, rather than the current dynamic value, when
4108 it's trying to decide whether to truncate output. Thus e.g.
4109 (let ((*print-lines* 50))
4110 (pprint-logical-block (stream nil)
4112 (let ((*print-lines* 8))
4113 (print (aref possiblybigthings i) stream)))))
4114 should now truncate the logical block only at 50 lines, instead of
4115 often truncating it at 8 lines, as it did before.
4116 * The doc/cmucl/ directory, containing old CMU CL documentation
4117 from the time of the fork, is no longer part of the base system.
4118 SourceForge has shut down its anonymous FTP service, and with it
4119 my original plan for distributing the old CMU CL documentation
4120 there. For now, if you need these files you can download an old
4121 SBCL source release and extract them from it.
4122 * The fasl file version number changed again, for dozens of reasons,
4123 some of which are apparent above.
4125 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4126 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4127 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4128 patch, so that DISASSEMBLE output is much nicer.
4129 * The code in the SB-PROFILE package now seems reasonably stable.
4130 I still haven't decided what the final interface should look like
4131 (I'd like PROFILE to interact cleanly with TRACE, since both
4132 facilities use function encapsulation) but if you have a need
4133 for profiling now, you can probably use it successfully with
4134 the current CMU-CL-style interface.
4135 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4136 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4137 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4138 link now returns the dangling link itself, and for similar
4139 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4140 link itself. (In these cases the old code signalled an error and
4141 looped endlessly, respectively.) Thus, DIRECTORY now works even
4142 in the presence of dangling and cyclic symbolic links.
4143 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4144 is now a supported extension again, since the consensus on
4145 sbcl-devel was that it can be useful for ordinary development
4146 work, not just for debugging SBCL itself.
4147 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4148 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4149 that currently-defined functions might be redefined later with
4150 different return types.
4151 * Hash tables can be printed readably, as inspired by CMU CL code
4152 of Eric Marsden and SBCL code of Martin Atzmueller.
4153 * better error handling in CLOS method combination, thanks to
4154 Martin Atzmueller porting Pierre Mai's CMU CL patches
4155 * more overflow fixes for >16Mbyte I/O buffers
4156 * A bug in READ has been fixed, so that now a single Ctrl-D
4157 character suffices to cause end-of-file on character streams.
4158 In particular, now you only need one Ctrl-D at the command
4159 line (not two) to exit SBCL.
4160 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4162 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4163 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4164 does the right thing.
4165 * The implementation of some type tests, especially for CONDITION
4166 types, is now tidier and maybe faster, due to CMU CL code
4167 originally by Douglas Crosher, ported by Martin Atzmueller.
4168 * Some math functions have been fixed, and there are new
4169 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4170 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4171 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4172 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4173 likely to be built into sbcl-0.7.0.)
4174 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4175 CL, ported to SBCL by Martin Atzmueller)
4176 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4177 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4178 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4179 * There's a new slam.sh hack to shorten the edit/compile/debug
4180 cycle for low-level changes to SBCL itself, and a new
4181 :SB-AFTER-XC-CORE target feature to control the generation of
4182 the after-xc.core file needed by slam.sh.
4183 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4184 COMPILE-FILE is no longer supported, so that now every function
4185 gets an entry point, so that block compilation looks a little
4186 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4187 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4188 returns the number of bytes consed since the system started,
4189 rather than the number consed since the first time the function
4190 was called. (The new definition parallels ANSI functions like
4191 CL:GET-INTERNAL-RUN-TIME.)
4192 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4193 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4194 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4195 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4196 * Fasl file version numbers are now independent of the target CPU,
4197 since historically most system changes which required version
4198 number changes have affected all CPUs equally. Similarly,
4199 the byte fasl file version is now equal to the ordinary
4202 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4203 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4204 is no longer recognized. I apologize for this, because it was
4205 listed in SB-EXT as a supported extension, but I found that
4206 its existing behavior was poorly specified, as well as incorrectly
4207 specified, and it looked like too much of a mess to straighten it
4208 out. I have enough on my hands trying to get ANSI stuff to work..
4209 * many patches ported from CMU CL by Martin Atzmueller, with
4210 half a dozen bug fixes in pretty-printing and the debugger, and
4211 half a dozen others elsewhere
4212 * fixed bug 13: Floating point infinities are now supported again.
4213 They might still be a little bit flaky, but thanks to bug reports
4214 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4215 as flaky as they were.
4216 * The --noprogrammer command line option is now supported. (Its
4217 behavior is slightly different in detail from what the old man
4218 page claimed it would do, but it's still appropriate under the
4219 same circumstances that the man page talks about.)
4220 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4221 are now supported, and enabled by default. Thus, the compiler can
4222 handle many floating point and complex operations much less
4223 inefficiently. (Thus e.g. you can implement a complex FFT
4225 * The compiler now detects type mismatches between DECLAIM FTYPE
4226 and DEFUN better, and implements CHECK-TYPE more correctly, and
4227 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4228 thanks to patches from Martin Atzmueller.
4229 * various fixes to make the cross-compiler more portable to
4230 ANSI-conforming-but-different cross-compilation hosts (notably
4231 Lispworks for Windows, following bug reports from Arthur Lemmens)
4232 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4233 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4234 fixed thanks to Pierre Mai's CMU CL patches.
4235 * fixes to keep the system from overflowing internal counters when
4236 it tries to use i/o buffers larger than 16M bytes
4237 * fixed bug 45a: Various internal functions required to support
4238 complex special functions have been merged from CMU CL sources.
4239 (When I was first setting up SBCL, I misunderstood a compile-time
4240 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4241 * improved support for type intersection and union, fixing bug 12
4242 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4243 more obscure bugs as well
4244 * some steps toward byte-compiling non-performance-critical
4245 parts of the system, courtesy of patches from Martin Atzmueller
4246 * Christophe Rhodes has made some debian packages of sbcl at
4247 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4248 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4249 stable, but are nonetheless usable. When he's ready, I'd be happy
4250 to add them to the SourceForge "File Releases" section. (And if
4251 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4252 * new fasl file format version number (because of changes in
4253 internal representation of (OR ..) types to accommodate the new
4254 support for (AND ..) types, among other things)
4256 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4257 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4259 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4261 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4262 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4263 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4264 * DESCRIBE now works on structure objects again.
4265 * Most function call argument type mismatches are now handled as
4266 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4267 know whether the function will be redefined before the call is
4268 executed. (The compiler could flag local calls with full WARNINGs,
4269 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4270 it doesn't keep track of enough information to know whether calls
4271 are local in this sense.)
4272 * Compiler output is now more verbose, with messages truncated
4273 later than before. (There should be some supported way for users
4274 to override the default verbosity, but I haven't decided how to
4275 provide it yet, so this behavior is still controlled by the internal
4276 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4277 src/compiler/ir1util.lisp.)
4278 * Fasl file format version numbers have increased again, because
4279 support for the Gray streams extension changes the layout of the
4280 system's STREAM objects.
4281 * The Gray subclassable streams extension now works, thanks to a
4282 patch from Martin Atzmueller.
4283 * The full LOAD-FOREIGN extension (not just the primitive
4284 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4285 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4286 but like most other programs, it defaults to copying the Unix
4287 environment from the original process instead of starting the
4288 new process in an empty environment.
4289 * Extensions which manipulate the Unix environment now support
4290 an :ENVIRONMENT keyword option which doesn't smash case or
4291 do other bad things. The CMU-CL-style :ENV option is retained
4292 for porting convenience.
4293 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4294 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4296 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4298 * A patch from Martin Atzmueller seems to have solved the SIGINT
4299 problem, and as far as we know, signal-handling now works cleanly.
4300 (If you find any new bugs, please report them!)
4301 * The system no longer defaults Lisp source file names to types
4302 ".l", ".cl", or ".lsp", but only to ".lisp".
4303 * The compiler no longer uses special default file extensions for
4304 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4305 seems to expect a single default extension for all compiled code,
4306 and there's no compelling reason to try to stretch the standard
4307 to allow two different extensions.) Instead, byte-compiled files
4308 default to the same extension as native-compiled files.
4309 * Fasl file format version numbers have increased again, because
4310 a rearrangement of internal implementation packages made some
4311 dumped symbols in old fasl files unreadable in new cores.
4312 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4313 many fewer weird special cases.
4314 * Bug #17 (differing COMPILE-FILE behavior between logical and
4315 physical pathnames) has been fixed, and some related misbehavior too,
4316 thanks to a patch from Martin Atzmueller.
4317 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4318 by Tim Moore, ported to SBCL by Martin Atzmueller.
4319 * Martin Atzmueller fixed several filesystem-related problems,
4320 including bug #36, in part by porting CMU CL patches, which were
4321 written in part by Paul Werkowski.
4322 * More compiler warnings in src/runtime/ are gone, thanks to
4323 more patches from Martin Atzmueller.
4324 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4327 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4329 * DESCRIBE now works on CONDITION objects.
4330 * The debugger now handles errors which arise when trying to print
4331 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4333 * The build system now uses an additional file, customize-target-features.lisp,
4334 to allow local modifications to the target *FEATURES* list. (The point of
4335 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4336 debugging features enabled, without having to worry about propagating it
4337 into everyone's system when I do a "cvs update".) When no
4338 customize-target-features.lisp file exists, the target *FEATURES* list
4339 should be constructed the same way as before.
4340 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4341 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4342 warn about behavior which is undefined under the ANSI spec. Note: This
4343 is specified by ANSI, but it's not very popular with programmers.
4344 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4345 macro in the SBCL sources for an example of a workaround which you
4346 might use to make portable ANSI-standard code which does what you want.
4347 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4348 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4349 when it's used as a non-toplevel form. (This is required in order
4350 to implement the DEFCONSTANT-EQX macro.)
4351 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4352 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4353 funny things, due to bugs in the implementation of EVAL-WHEN
4354 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4355 non-toplevel DEFCONSTANTs are uncommon.)
4356 * The core file version number and fasl file version number have been
4357 incremented, because the old noncompliant DEFCONSTANT behavior involved
4358 calling functions which no longer exist, and because I also took the
4359 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4360 * fixed bug 1 (error handling before read-eval-print loop starts), and
4361 redid debugger restarts and related debugger commands somewhat while
4363 ** The QUIT debugger command is gone, since it did something
4364 rather different than the SB-EXT:QUIT command, and since it never
4365 worked properly outside the main toplevel read/eval/print loop.
4366 Invoking the new TOPLEVEL restart provides the same functionality.
4367 ** The GO debugger command is also gone, since you can just invoke
4368 the CONTINUE restart directly instead.
4369 ** The TOP debugger command is also gone, since it's redundant with the
4370 FRAME 0 command, and since it interfered with abbreviations for the
4372 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4374 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4375 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4376 some porting work by Martin Atzmueller)
4377 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4378 with a boatload of patches which he ported to SBCL. Now that those
4380 ** The system tries to make sure that its low-priority messages
4381 are prefixed by semicolons, to help people who like to use
4382 syntax highlighting in their ILISP buffer. (This patch
4383 was originally due to Raymond Toy.)
4384 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4385 patches originally written by Raymond Toy.
4386 ** The compiler understands coercion between single-value and
4387 multiple-VALUES type expressions better, getting rid of some very
4388 weird behavior, thanks to patches originally by Robert MacLachlan
4389 and Douglas Crosher.
4390 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4391 lambda lists, thanks to a patch originally by Pierre Mai.
4392 ** The system no longer bogusly warns about "abbreviated type
4394 ** The compiler gets less confused by inlining and RETURN-FROM,
4395 thanks to some patches originally by Tim Moore.
4396 ** The system no longer hangs when dumping circular lists to fasl
4397 files, thanks to a patch originally from Douglas Crosher.
4398 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4399 undefined function error.
4400 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4401 in structure slot initforms) for now, documented workaround instead:-|
4402 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4403 * fixed bug 5: added stubs for various Gray stream functions called
4404 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4405 installed, at least appropriate type errors are generated
4406 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4407 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4408 consistently in DEFMETHOD forms.
4409 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4410 it doesn't seem to affect SBCL after all
4411 * The C runtime system now builds with better optimization and many
4412 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4414 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4416 * The system is now under CVS at SourceForge (instead of the
4417 CVS repository on my home machine).
4418 * The new signal handling code has been tweaked to treat register
4419 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4420 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4421 downstream, e.g. in debug-int.lisp, has implicit dependencies
4422 on the unsignedness of integer representation of machine words,
4423 and that caused the system to bomb out with infinite regress
4424 when trying to recover from type errors involving signed values,
4425 e.g. (BUTLAST '(1 2 3) -1).)
4426 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4427 (This was one of the bugs Peter Van Eynde reported back in July.)
4428 * The system now uses code inspired by Colin Walters' O(N)
4429 implementation of MAP (from the cmucl-imp@cons.org mailing
4430 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4431 inline the MAP operation, and there is more than one
4432 sequence argument to the MAP call (so that it can't just
4433 do ETYPECASE once and for all based on the type of the
4434 single sequence argument). (The old non-inline implementation
4435 of the general M-argument sequence-of-length-N case required
4436 O(M*N*N) time when any of the sequence arguments were LISTs.)
4437 * The QUIT :UNIX-CODE keyword argument has been renamed to
4438 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4439 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4441 * Raymond Wiker's patches to port dynamic loading from Linux to
4442 FreeBSD have been added.
4443 * The BUGS file is now more nearly up to date, thanks in large part
4444 to Martin Atzmueller's review of it.
4445 * The debugger now flushes standard output streams before it begins
4446 its output ("debugger invoked" and so forth).
4447 * The core version number and fasl file version number have both
4448 been incremented, because of incompatible changes in the layout
4450 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4451 used to not be called for a saved Lisp image.)
4452 * Martin Atzmueller's version of a patch to fix a compiler crash,
4453 as posted on sbcl-devel 13 September 2000, has been installed.
4454 * Instead of installing Martin Atzmueller's patch for the
4455 compiler transform for SUBSEQ, I deleted the compiler transform,
4456 and transforms for some similar consing operations.
4457 * A bug in signal handling which kept TRACE from working on OpenBSD
4459 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4460 away by constant folding
4461 * The system now defines its address space constants in one place
4462 (in the Lisp sources), and propagates them automatically elsewhere
4463 (through GENESIS and the sbcl.h file). Therefore, patching the
4464 address map is less unnecessarily tedious and error-prone. The
4465 Lisp names of address space constants have also been systematized.
4466 * CVS tags like dollar-Header-dollar have been removed from
4467 the sources, because they have never saved me trouble and
4468 they've been source of trouble working with patches and other
4469 diff-related operations.
4470 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4471 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4473 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4475 * The system has been ported to OpenBSD.
4476 * The system now compiles with a simple "sh make.sh" on the systems
4477 that it's supported on. I.e., now you no longer need to tweak
4478 text in the target-features.lisp-expr and symlinks in src/runtime/
4479 by hand, the make.sh takes care of it for you.
4480 * The system is no longer so grossly inefficient when compiling code
4481 involving vectors implemented as general (not simple) vectors (VECTOR T),
4482 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4483 which dares to use the various sequence functions on non-simple
4484 vectors, takes less of a performance hit.
4485 * There is now a primitive type predicate VECTOR-T-P
4486 to test for the (VECTOR T) type, so that e.g.
4487 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4488 can now be compiled with some semblance of efficiency. (The old code
4489 turned the type declaration into a full call to %TYPEP at runtime!)
4490 * AREF on (VECTOR T) is still not fast, since it's still compiled
4491 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4492 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4493 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4494 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4495 without making full calls to SUBTYPEP at runtime.
4496 (Some analogous efficiency issues for non-simple vectors specialized to
4497 element types other than T, or for non-simple multidimensional arrays,
4498 have not been addressed. They could almost certainly be handled the
4499 same way if anyone is motivated to do so.)
4500 * The changes in array handling break binary compatibility, so
4501 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4502 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4503 instead of (VALUES T T).
4504 * By following the instructions that Dan Barlow posted to sbcl-devel
4505 on 2 July 2000, I was able to enable primitive dynamic object
4506 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4507 functionality is not implemented (since it calls ld to resolve
4508 library references automatically, requiring RUN-PROGRAM for its
4509 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4510 try to resolve library references) is now supported.
4511 * The system now flushes the standard output streams when it terminates,
4512 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4513 them at several other probably-convenient times, e.g. in each pass of
4514 the toplevel read-eval-print loop, and after evaluating a form given
4515 as an "--eval" command-line option. (These changes were motivated by a
4516 discussion of stream flushing issues on cmucl-imp in August 2000.)
4517 * The source transform for TYPEP of array types no longer assumes
4518 that an array whose element type is a not-yet-defined type
4519 is implemented as an array of T, but instead punts, so that the
4520 type will be interpreted at runtime.
4521 * There is now some support for cross-compiling in make.sh: each of
4522 the phases of make.sh has its own script. (This should be transparent
4523 to people doing ordinary, non-cross-compile builds.)
4524 * Since my laptop doesn't have hundreds of megabytes of memory like
4525 my desktop machine, I became more motivated to do some items on
4526 my to-do list in order to reduce the size of the system a little:
4527 ** Arrange for various needed-only-at-cold-init things to be
4528 uninterned after cold init. To support this, those things have
4529 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4530 symbols with such names are now uninterned after cold init).
4531 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4532 fasl files for cold load.
4533 ** Remove the old compiler structure pooling code (which used to
4534 be conditional on the target feature :SB-ALLOC) completely.
4535 ** Redo the representation of some data in cold init to be more compact.
4536 (I also looked into supporting byte compiled code at bootstrap time,
4537 which would probably reduce the size of the system a lot, but that
4538 looked too complicated, so I punted for now.)
4539 * The maximum signal nesting depth in the src/runtime/ support code has
4540 been reduced from 4096 to 256. (I don't know any reason for the very
4541 large old value. If the new smaller value turns out to break something,
4542 I'll probably just bump it back up.)
4543 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4545 * Many, many bugs reported by Peter Van Eynde have been added to
4546 the BUGS list; some have even been fixed.
4547 * While enabling dynamic object file loading, I tried to make the
4548 code easier to understand, renaming various functions and variables
4549 with less ambiguous names, and changing some function calling
4550 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4551 * While trying to figure out how to do the OpenBSD port, I tried to
4552 clean up some of the code in src/runtime/. In particular, I dropped
4553 support for non-POSIX signal handling, added various comments,
4554 tweaked the code to reduce the number of compilation warnings, and
4555 renamed some files to increase consistency.
4556 * To support the new automatic configuration functionality in make.sh,
4557 the source file target-features.lisp-expr has been replaced with the
4558 source file base-target-features.lisp-expr and the machine-generated
4559 file local-target-features.lisp-expr.
4560 * fixed a stupid quoting error in make.sh so that using CMU CL
4561 "lisp -batch" as cross-compilation host works again
4563 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4565 * DESCRIBE no longer tries to call itself recursively to describe
4566 bound/fbound values, so that it no longer fails on symbols which are
4567 bound to themselves (like keywords, T, and NIL).
4568 * DESCRIBE now works on generic functions.
4569 * The printer now prints less-screwed-up representations of closures
4570 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4571 * A private symbol is used instead of the :EMPTY keyword previously
4572 used to mark empty slots in hash tables. Thus
4573 (DEFVAR *HT* (MAKE-HASH-TABLE))
4574 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4575 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4576 now does what ANSI says that it should. (You can still get
4577 similar noncompliant behavior if bang on the hash table
4578 implementation with all the symbols you get back from
4579 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4580 This breaks binary compatibility, since tests for equality to
4581 :EMPTY are wired into things like the macroexpansion of
4582 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4584 * There's now a minimal placeholder implementation for CL:STEP,
4585 as required by ANSI.
4586 * An obscure bug in the interaction of the normal compiler, the byte
4587 compiler, inlining, and structure predicates has been patched
4588 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4589 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4591 * Missing ordinary arguments in a macro call are now detected even
4592 when the macro lambda list contains &KEY or &REST.
4593 * The debugger no longer complains about encountering the top of the
4594 stack when you type "FRAME 0" to explicitly instruct it to go to
4595 the top of the stack. And it now prints the frame you request even
4596 if it's the current frame (instead of saying "You are here.").
4597 * As specified by ANSI, the system now always prints keywords
4598 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4600 * The default initial SIZE of HASH-TABLEs is now smaller.
4601 * Type information from CLOS class dispatch is now propagated
4602 into DEFMETHOD bodies, so that e.g.
4603 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4605 is now basically equivalent to
4606 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4607 (DECLARE (TYPE SINGLE-FLOAT X))
4609 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4610 operation, without having to do run-time type dispatch.
4611 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4612 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4613 * Since I don't seem to be making big file reorganizations very often
4614 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4615 is overflowing my ability to conveniently back them up), I've finally
4616 checked the system into CVS. (The CVS repository is on my home system,
4617 not at SourceForge -- putting it on SourceForge might come later.)
4618 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4619 high-level GC-NOTIFY-FOO functions send their output. (There's
4620 still very little control of where low-level verbose GC functions
4621 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4622 less than it used to -- the GC-NOTIFY-FOO functions are now under
4623 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4624 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4625 in only one place in the source code, and propagates it automatically
4626 everywhere that it's needed. Thus e.g. when I bump the version from
4627 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4628 * The C source files now include boilerplate legalese and documentation
4629 at the head of each file (just as the Lisp source files already did).
4630 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4631 to his page will be replaced with a link to his new CLiki service.
4633 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4635 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4636 * The build process now looks for GNU make under the default name "gmake",
4637 instead of "make" as it used to. If GNU make is not available as "gmake"
4638 on your system, you can change this default behavior by setting the
4639 GNUMAKE environment variable.
4640 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4641 can build without error under CMU CL.
4643 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4645 * There is now a partial SBCL user manual (with some new text and some
4646 text cribbed from the CMU CL manual).
4647 * The beginnings of a profiler have been added (starting with the
4648 CMU CL profiler and simplifying and cleaning up). Eventually the
4649 main interface should be through the TRACE macro, but for now,
4650 it's still accessed through vaguely CMU-CL-style functions and macros
4651 exported from the package SB-PROFILE.
4652 * Some problems left over from porting CMU CL to the new
4653 cross-compilation bootstrap process have been cleaned up:
4654 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4655 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4656 part when getting rid of the compiler *BACKEND* stuff.)
4657 ** The value of *NULL-TYPE* was screwed up, because it was
4658 being initialized before the type system knew the final
4659 definition of the 'NULL type. This screwed up several key
4660 optimizations in the compiler, causing inefficiency in all sorts
4661 of places. (I found it because I wanted to understand why
4662 GET-INTERNAL-RUN-TIME was consing.)
4663 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4664 PROCLAIM FTYPE information. Unfortunately this broke binary
4665 compatibility again, since now the forms output by DEFGENERIC
4666 to refer to functions which didn't exist in 0.6.3.
4667 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4668 can use the new (as of 0.6.3) transform for SOME into MAP into
4670 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4671 values to (INTEGER 0 1000000), so that the time code will no longer
4672 occasionally get blown up by Linux returning 1000000 microseconds
4673 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4674 its output conform to the ANSI spec. (Alas, this makes its output
4675 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4676 * A full call to MAP NIL with a single sequence argument no longer conses.
4677 * fixes to problems pointed out by Martin Atzmueller:
4678 * The manual page no longer talks about multiprocessing as though
4679 it were currently supported.
4680 * The ILISP support patches have been removed from the distribution,
4681 because as of version 5.10.1, ILISP now supports SBCL without us
4682 having to maintain patches.
4683 * added a modified version of Raymond Toy's recent CMU CL patch for
4684 EQUALP comparison of HASH-TABLE
4686 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4688 * The system still can't cross-compile itself with
4689 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4690 entails), but at least it can compile more of itself that way
4691 than it used to be able to, and various buglets which were uncovered
4692 by trying to cross-compile itself that way have now been fixed.
4693 * This release breaks binary compatibility again. This time
4694 at least I've incremented the FASL file format version to 2, so that the
4695 problem can be detected reliably instead of just causing weird errors.
4696 * various new style warnings:
4697 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4698 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4699 ** using the lexical binding of a variable named in the *FOO* style
4700 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4701 as specified by ANSI.
4702 * *RANDOM-STATE* is no longer automatically initialized from
4703 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4704 default behavior of the system is to repeat its behavior every time
4705 it's run. If you'd like to change this behavior, you can always
4706 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4707 old convention there was no comparably easy way to get the system to
4708 repeat its behavior every time it was run.
4709 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4710 FTYPE declarations has been removed, in favor of their ANSI
4711 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4712 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4713 the types of their sequence arguments can be determined at compile time.
4714 This is done through a new open code expansion for MAP which eliminates
4715 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4716 argument types can be determined at compile time.
4717 * The optimizer now transforms COERCE into an identity operation when it
4718 can prove that the coerced object is already of the correct type. (This
4719 can be a win for machine generated code, including the output of other
4720 optimization transforms, such as the MAP transform above.)
4721 * Credit information has been moved from source file headers into CREDITS.
4722 * Source file headers have been made more standard.
4723 * The CASE macro now compiles without complaining even when it has
4726 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4728 * (Note that the way that the PCL macroexpansions were rewritten
4729 to accommodate the change in DEFGENERIC below breaks binary
4730 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4731 not run under sbcl-0.6.2. Once we get out of alpha releases,
4732 i.e. hit release 1.0.0, we'll probably try to maintain binary
4733 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4734 and sbcl-1.4.4. Until then, however, it might be fairly common
4735 for maintenance releases to break binary compatibility.)
4736 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4738 * The reporting of unhandled signals has been changed to print some
4739 explanatory text as well as the report form. (Previously only
4740 the report form was printed.)
4741 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4742 it defines, so that the compiler no longer issues undefined function
4743 warnings for compiled-but-not-yet-loaded generic functions.
4744 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4745 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4746 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4747 section of the ANSI spec are supported.
4748 * The "" nickname for the "KEYWORD" package has been removed.
4749 The reader still handles symbol tokens which begin with a package marker
4750 as keywords, but it doesn't expose its mechanism for doing so in the
4751 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4752 * The system now issues STYLE-WARNINGs for contradictory TYPE
4753 proclamations. (Warnings for contradictory FTYPE proclamations would
4754 be nice too, but those can't be done usefully unless the type system
4755 is made smarter about FUNCTION types.)
4756 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4757 systematized, so that "*target-*.lisp is supposed to exist only on the
4758 target and imply that there's a related file which exists on the
4759 host, and *host-*.lisp is supposed to exist only on the host and imply
4760 that there's a related file which exists on the target. This involves a
4761 lot of renaming. Hopefully the acute confusion caused by the renaming
4762 will be justified by the reduction in chronic confusion..
4763 ** runtime-type.lisp -> early-target-type.lisp
4764 ** target-type.lisp -> late-target-type.lisp
4765 ** early-host-format.lisp -> early-format.lisp
4766 ** late-host-format.lisp -> late-format.lisp
4767 ** host-error.lisp -> misc-error.lisp
4768 ** early-error.lisp -> early-target-error.lisp
4769 ** late-error.lisp -> late-target-error.lisp
4770 ** host-defboot.lisp -> early-defboot.lisp
4771 ** code/misc.lisp -> code/target-misc.lisp
4772 ** code/host-misc.lisp -> code/misc.lisp
4773 ** code/numbers.lisp -> code/target-numbers.lisp
4774 ** code/early-numbers.lisp -> numbers.lisp
4775 ** early-host-type.lisp -> early-type.lisp
4776 ** late-host-type.lisp -> late-type.lisp
4777 ** host-typep.lisp -> typep.lisp
4778 ** load.lisp -> target-load.lisp
4779 ** host-load.lisp -> load.lisp
4780 ** host-disassem.lisp -> disassem.lisp
4781 ** host-insts.lisp -> insts.lisp
4782 ** byte-comp.lisp -> target-byte-comp.lisp
4783 ** host-byte-comp.lisp -> byte-comp.lisp
4784 ** host-signal.lisp -> signal.lisp
4785 ** host-defstruct.lisp -> defstruct.lisp
4786 ** late-target-type.lisp -> deftypes-for-target.lisp
4787 Furthermore, several other previously target-only files foo.lisp (e.g.
4788 hash-table.lisp and random.lisp) have been split into a target-and-host
4789 foo.lisp file and a target-only target-foo.lisp file, with their key type
4790 definitions in the target-and-host part, so that the cross-compiler will
4791 know more about target types.
4792 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4793 gone away. In their place are various *BACKEND-FOO* variables
4794 corresponding to the slots of the old structure.
4795 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4796 into the target SBCL has been fixed.
4797 * The chill.lisp system for loading cold code into a running SBCL
4799 * Support for the CMU CL "scavenger hook" extension has been removed.
4800 (It was undocumented and unused in the CMU CL sources that SBCL was
4801 derived from, and stale in sbcl-0.6.1.)
4802 * Various errors in the cross-compiler type system were detected
4803 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4804 (enabling various consistency checks). Many of them were fixed,
4805 but some hard problems remain, so the compiler is back to
4806 running without *TYPE-SYSTEM-INITIALIZED* for now.
4807 * As part of the cross-compiler type system cleanup, I implemented
4808 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4809 * I have started adding UNCROSS calls throughout the type system
4810 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4811 on cross-compiler input files will be able to go away, and various
4813 * CONSTANTP now returns true for quoted forms (as explicitly required
4816 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4818 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4819 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4820 (MAKE-LIST -1). In the longer term, it ought to become true
4821 that declarations are assertions even at SAFETY 1. For now, it's not
4822 quite true even at SAFETY 3, but it's at least more nearly true..
4823 (Note that this change seems to increases the size of the system by
4824 O(5%) and to decrease the speed of the compiler by 20% or more.)
4825 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4826 for the problem of printing dozens of lines of distracting information
4827 about low-level system machinery as part of the top stack frame
4828 on entry to the debugger when an undefined function was called.
4829 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4830 is not reset to COMMON-LISP-USER.
4831 * Compilation of stuff related to dyncount.lisp has been made conditional
4832 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4833 smaller. The various dyncount-related symbols have been moved into
4834 a new "SB-DYNCOUNT" package.
4835 * tty-inspect.lisp has been renamed to inspect.lisp.
4836 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4837 feature has gone away. (When we eventually port to other flavors of
4838 libc and/or Unix, we'll try to make the differences between flavors
4839 invisible at the user level.)
4840 * Various other *FEATURES* tags, and/or their associated conditionals,
4841 have been removed if obsolescent, or given better documentation, or
4842 sometimes given more-mnemonic names.
4844 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4846 * tidied up "make.sh" script
4847 * tidied up system directory structure
4848 * better "clean.sh" behavior
4849 * added doc/FOR-CMUCL-DEVELOPERS
4850 * many many small tweaks to output format, e.g. removing possibly-confusing
4851 trailing #\. character in DESCRIBE-INSTANCE
4852 * (EQUALP #\A 'A) no longer signals an error.
4853 * new hashing code, including EQUALP hashing
4854 * tidied up Lisp initialization and toplevel
4855 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4856 * command line argument processing
4857 * added POSIX-GETENV function to deal with Unix-ish environment variables
4858 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4859 terminating SBCL on EOF
4860 * non-verbose GC by default
4861 * There is no more "sbcl" shell script; the sbcl file is now the C
4862 runtime executable (just like CMU CL).
4863 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4865 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4866 symbol and package information as Lisp native symbol and package objects
4867 instead of strings naming symbols and strings naming packages. This way,
4868 whenever packages are renamed (as in warm init), debug information is
4869 transformed along with everything else.
4870 * tweaked the optimization policy declarations which control the building
4871 of SBCL itself. Now, among other things, the system no longer saves
4872 source location debugging information. (This helps two problems at once
4873 by reducing SBCL size and by keeping SBCL from trying to look for its
4874 sources -- which may not exist -- when reporting errors.)
4875 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4876 debugging and testing purposes
4877 * cleaned up printing, making the printer call PRINT-OBJECT for
4878 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4879 methods, giving nearly-ANSI behavior
4880 * converted almost all special variables to use *FOO* naming convention
4881 * deleted PARSE-TIME functionality, since it can be done portably
4882 * moved some files out of cold init into warm init
4883 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4885 * regularized formatting of source files
4886 * added an install.sh script
4887 * fixed ridiculous memory usage of cross-compiler by making
4888 compiler/alloc.lisp not try to do pooling unless it can hook
4889 itself into the GC of the cross-compilation host. Now the system
4890 builds nicely on my old laptop.
4891 * added :SB-ALLOC in target-features.lisp-expr
4892 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4893 was not implemented)
4894 * re-did condition handling and note reporting in the compiler. Notes
4895 are no longer handled by signalling conditions. Style warnings
4896 and warnings are handled more correctly and reported in such a way
4897 that it's easy to find one or the other in your output (so that you
4898 can e.g. figure out which of many problems caused COMPILE-FILE to
4900 * changed the severity of several compiler warnings from full WARNING
4901 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4902 compiler note reporting so that it doesn't use the condition system
4903 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4904 COMPILE-FILE command)
4905 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4906 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4907 no longer supported, since their implementation was deeply intertwingled
4908 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4909 * removed bogus "support" for compiler macros named (SETF FOO), and
4910 removed the compiler macro for SETF INFO (but only after making a fool
4911 of myself on the cmucl-imp mailing list by posting a bogus patch for
4912 DEFINE-COMPILER-MACRO..)
4913 * Compiled files containing forms which have side effects on the Lisp
4914 reader (such as DEFPACKAGE forms) are now handled more correctly.
4915 (Compiler queuing of top level lambdas has been suppressed by setting
4916 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4917 * deleted various currently-unused source files, e.g. gengc.lisp. They
4918 may be added back at some point e.g. when porting to other architectures,
4919 but until they are it's distracting to distribute them and to try to
4921 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4922 there were so many of them they're just distractions, and UNCROSS is
4923 known to be able to handle the current sources
4924 * moved PROFILE functionality into TRACE, so that it will be clear
4925 how the wrapping and unwrapping of functions when you profile them
4926 interacts with the wrapping and unwrapping of functions when you
4927 trace them. (Actually, the functionality isn't there yet, but at least
4928 the interface specification is there. Hopefully, the functionality will
4929 arrive with some future maintenance release.)
4930 * removed host-oops.lisp
4931 * changed signature of QUIT function to allow UNIX-CODE argument
4932 * fixed READ-SEQUENCE bug
4933 * tweaked verbose GC output so that it looks more like the progress
4934 output that ANSI specifies for functions like LOAD
4935 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4936 * added <http://sbcl.sourceforge.com> to the banner information printed by