1 ;;;; -*- coding: utf-8; -*-
2 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying
3 data vector of an multidimensional SIMPLE-ARRAY.
4 * new feature: the system now signals a continuable error if standard
5 readtable modification is attempted.
6 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
7 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
9 * bug fix: lexical type declarations are now correctly reported by
10 SB-CLTL2. (reported by Larry D'Anna)
11 * bug fix: STRING-TO-OCTETS did not handle :START properly when
12 using UTF-8 as external format. (thanks to Luis Oliveira)
13 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
14 are signalled correctly. (thanks to Stas Boukarev)
15 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
16 designator. (thanks to Tobias Rittweiler)
17 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
18 designator, and returns T instead of the function. (thanks to
20 * bug fix: direct superclasses of STANDARD-CLASS and
21 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
22 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
23 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
24 when no class with the named slot yet exists no longer causes a
25 compile-time style-warning.
26 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
27 in safe code. (reported by Didier Verna)
28 * bug fix: #430; nested structure constructors can stack allocate.
30 changes in sbcl-1.0.23 relative to 1.0.22:
31 * enhancement: when disassembling method functions, disassembly
32 for the associated fast function is also produced.
33 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
35 * optimization: printing with *PRINT-PRETTY* true is now more
36 efficient as long as the object being printed doesn't require
37 special handling by the pretty printer.
38 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
39 now interact correctly with type declarations.
40 * partial bug fix: PCL detects infinite recursion during wrapper
41 validation. (thanks to Attila Lendvai)
42 * bug fix: #426; nested function calls are inlined properly.
43 Previously if FOO was an inline function, in calls of the form
44 (FOO (FOO ...)) the outer call was not inlined.
45 * bug fix: long long arguments passed in registers to alien
46 functions on PowerPC Linux and NetBSD are now handled correctly
47 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
49 changes in sbcl-1.0.22 relative to 1.0.21:
50 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
51 for the shared object in the current directory, but passes the native
52 namestring of the designated pathname to the operation system's shared
53 object loading function as-it.
54 * minor incompatible change: --disable-debugger toplevel option now takes
55 effect before processing of initialization files and --eval or --load
57 * new feature: new commandline argument: --script, which supports
58 shebang lines. See documentation for details. (based on work by
60 * new feature: SAVE-LISP-AND-DIE can save current values of
61 --dynamic-space-size and --control-stack-size in the executable core,
62 causing it to skip normal runtime option processing. See documentation
63 for details. (thanks to Zach Beane)
64 * enhancement: inoccous calls to EVAL or generic functions dispatching
65 on subclasses of eg. STREAM no longer cause compiler notes to appear.
66 * enhancement: the system no longer resignals errors from --load and
67 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
68 associated with the original error to be lost. (thanks to Ariel
70 * enhancement: :DONT-SAVE keyword argument has been added to
71 LOAD-SHARED-OBJECT for controlling interaction with
72 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
73 the effects of an earlier LOAD-SHARED-OBJECT call.
74 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
75 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
76 provided. (reported by Cedric St-Jean)
77 * bug fix: circularity handling in the reader did not treat raw
78 structure slots correctly. (reported by Cedric St-Jean)
79 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
80 file descriptors when there were none.
81 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
82 was broken. (reporteed by Willem Broekema)
83 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
84 pathnames without a directory.
85 * bug fix: COMPILE-FILE did not warn about undefined variable
86 references at toplevel, and LOAD of the resulting fasl did
88 * bug fix: functions with non-required arguments used to end up with
89 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
90 * bug fix: redefining a function with non-required arguments didn't
91 update the system's knowledge about its call signature properly.
92 * bug fix: fixed #431; incompatible alien record type redefinitions
93 are detected and handled. (reported by Neil Haven)
94 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
95 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
97 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
98 after alien stack frames.
99 * bug fix: strings passed to mk{s,d}temp lacked null termination
101 changes in sbcl-1.0.21 relative to 1.0.20:
102 * new feature: the compiler is able to track the effective type of a
103 generic function across method addition and removal.
104 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
105 appropriately typed structure slots without locking.
106 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
107 information like those gathered by TIME using a programming-friendly
109 * new feature: TIME reports time taken even if the form performs a
110 non-local transfer of control.
111 * enhancement: reduced conservativism on GENCGC platforms: on
112 average 45% less pages pinned (measured from SBCL self build).
113 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
114 mutate constant symbols or violate declaimed type of the symbol.
115 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
116 sleeping on the semaphore in heavily contested semaphores.
117 * bug fix: semaphores and condition variables were not interrupt
119 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
120 owned by other threads anymore.
121 * bug fix: FIND on lists called KEY outside the specified
122 subsequence. (reported by budden)
123 * bug fix: LOG doesn't use single-float intermediate results when
124 given mixed integer and double-float arguments, leading to better
125 precision. (reported by Bob Felts)
126 * bug fix: LOG with base zero returned values of inconsistent type.
128 changes in sbcl-1.0.20 relative to 1.0.19:
129 * minor incompatible change: OPTIMIZE qualities
130 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
131 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
132 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
133 * documentation: some slot access efficiency guidelines have been
134 added to the user manual.
135 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
136 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
137 as ASSOC and MEMEBER.
138 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
139 to more efficient EQ-comparison versions more often.
140 * optimization: enhanced derivation of DOLIST iteration variable type
142 * optimization: constant folding of simple (LIST ...) forms as DOLIST
144 * optimization: runtime lookup of function definitions can be
145 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
146 * optimization: compiler is able to derive the return type of
147 (AREF (THE STRING X) Y) as being CHARACTER.
148 * optimization: CLRHASH on empty hash-tables no longer does pointless
149 work. (thanks to Alec Berryman)
150 * optimization: REPLACE deftransforms don't punt when :START1 or
152 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
153 no longer emits a code deletion note. (reported by Andrew
155 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
156 functions with an odd number of &OPTIONAL arguments, a &REST
157 argument, and one or more &KEY arguments at the call site.
158 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
159 arguments appeared at call sites as well.
160 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
161 READ-LINE &co can no longer read from them afterwards. (reported
163 * bug fix: fixed #427: unused local aliens no longer cause compiler
164 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
166 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
167 alien-stack leakage. (reported by Andy Hefner)
168 * bug fix: PROGV signals an error when an attempt to violate declared
169 type of a variable or bind a constant is made.
170 * bug fix: SET signals an error when an attempt to violate declared
171 type of a variable is made.
172 * bug fix: restart computation during the execution of a restart
173 test function no longer causes infinite recursion. (reported by
175 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
176 signals an error. (thanks to Pierre Mai)
177 * bug fix: EXPORT left symbol unexported in conflict situations.
178 (thanks to Michael Weber)
179 * bug fix: correctly handle name conflicts involving CL:NIL.
180 (thanks to Michael Weber)
181 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
182 conflicts arising from USEing package with conflicting symbols
183 correctly. (thanks to Michael Weber)
185 changes in sbcl-1.0.19 relative to 1.0.18:
186 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
187 warnings that go otherwise unhandled will be muffled if they are
188 of the type that's the value of this variable.
189 * optimization: stack allocation is slightly more efficient on x86
191 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
192 where a raw slot always is initialized using the initform whose
193 type is not know sufficiently well a compile-time are now compiled
194 correctly. (reported by John Morrison)
195 * bug fix: compiler no longer makes erronous assumptions in the
196 presense of non-foldable SATISFIES types.
197 * bug fix: stack analysis missed cleanups of dynamic-extent
198 arguments in non-let-converted calls to local functions.
199 * improvements to the Windows port:
200 ** adjusted address spaces for building on both Win32 and
201 Win64. (thanks for John Connors)
202 * fixed some bugs revealed by Paul Dietz' test suite:
203 ** interval arithmetic during type derivation used inexact integer
204 to single-float coercions.
205 ** arithmetic operations involving large integers and single
206 floats give the same results in compiled and interpreted code.
207 ** deriving the result type of COERCE no longer signals an error
208 if the derived type of the second argument is a MEMBER type
209 containing invalid type specifiers.
210 ** ADJOIN with constant NIL as second argument works correctly.
211 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
213 changes in sbcl-1.0.18 relative to 1.0.17:
214 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
215 profiles only the current thread.
216 * minor incompatible change: changes to SYMBOL-VALUE of constants
217 defined with DEFCONSTANT now signal an error.
218 * enhancement: SB-SPROF now has support for wallclock profiling,
219 and is also able to profile specific threads. REPORT output
220 has also additional sorting options.
221 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
223 * optimization: structure allocation has been improved
224 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
225 ** out of line constructors are ~10% faster.
226 ** inline constructors are ~15% faster.
227 ** inline constructors are capable of dynamic extent allocation
228 (generally on x86 and x86-64, in some cases on other platforms
230 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
232 * optimization: file compiler is now able to coalesce non-circular
233 lists, non-base strings, and bit-vectors. Additionally, constants
234 are never referenced through SYMBOL-VALUE at runtime.
235 * optimization: code defining methods on PRINT-OBJECT (and other
236 generic functions in the COMMON-LISP package) now loads faster.
237 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
239 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
240 fasl is now deleted. (reported by Attila Lendvai)
241 * bug fix: READ-LINE always returned NIL for the last line in files.
242 (reported by Yoshinori Tahara)
243 * bug fix: more accurate disassembly annotations of foreign function
244 calls. (thanks to Andy Hefner)
245 * bug fix: trimming non-simple strings and non-string string
246 designators when the there is nothing to trim works properly.
247 (thanks to James Knight)
248 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
249 (thanks to Travis Cross)
250 * fixed some bugs revealed by Paul Dietz' test suite:
251 ** NIL is a valid function name (regression at 1.0.13.38)
252 ** FILL on lists was missing its return value (regression at 1.0.12.27)
253 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
254 fill pointers properly (regression at 1.0.12.23)
255 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
256 displacement indices properly (regression at 1.0.12.23)
258 changes in sbcl-1.0.17 relative to 1.0.16:
259 * temporary regression: user code can no longer allocate closure
260 variable storage on stack, due to bug 419 without explicitly
261 requesting it. Please consult sbcl-devel for advice if you need to
262 use this feature in the meanwhile.
263 * new feature: runtime argument --control-stack-size can be used to
264 adjust thread default control stack size.
265 * enhancement: improved TIME output
266 ** all times are reported using the measured accuracy (milliseconds
267 for real and GC times, microseconds for everything else.)
268 ** processor cycle counts on x86 and x86-64.
269 ** interpreted forms are counted for both evaluator modes.
270 ** number of lambdas converted by the compiler is reported.
271 ** CPU percentage report (computed from real and total run time.)
272 ** more comprehensive run time reporting, using a condenced format
273 ** interperted form, lambda, and page fault counts are omitted
275 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
277 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
278 * optimization: two argument forms of LAST are upto ~10% faster
279 in normal SPEED policies.
280 * optimization: NCONC no longer needs to heap cons its &REST list
281 in normal SPEED policies.
282 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
284 * bug fix: UNION and NUNION work with :TEST-NOT once more,
285 regression since 1.0.9.1. (thanks to Eric Marsden)
286 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
287 since 1.0.15.36. (thanks to Paul Khuong)
288 * bug fix: LAST when always returned the whole list when given a bignum
289 as the second argument.
290 * bug fix: dynamic extent allocation of nested lists and vectors
291 could leak to otherwise accessible parts.
292 * bug fix: invalid optimization of heap-allocated alien variable
294 * bug fix: fasl header checking is less vulnerable to different
295 platform word lengths.
296 * bug fix: more correct assembler syntax for GNU binutils
297 2.18.50.0.4 support. (thanks to Marijn Schouten)
298 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
300 * bug fix: the fopcompiler can handle LOCALLY forms (with no
301 declarations) successfully. (reported by Attila Lendvai)
303 changes in sbcl-1.0.16 relative to 1.0.15:
304 * minor incompatible change: revert the changes to sb-posix's error
305 signaling added in 1.0.14.
306 * minor incompatible change: change PROBE-FILE back to returning
307 NIL whenever we can't get a truename, as was the case before 1.0.14.
308 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
309 inherits from ERROR instead of just CONDITION.
310 * new feature: SB-INTROSPECT can provide source locations for instances
311 as well. (thanks to Tobias Rittweiler)
312 * optimization: binding special variables now generates smaller code
313 on threaded platforms.
314 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
315 and cases where no :TEST is given but the compiler can infer that
316 the element to search is of type (OR FIXNUM (NOT NUMBER)).
317 * optimization: better LOGNOT on fixnums.
318 * optimization: modular arithmetic for a particular requested width
319 is implemented using a tagged representation unless a better
320 representation is available.
321 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
322 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
323 for wellformedness and returns a specialized vector. (reported by
324 Francois-Rene Rideau)
325 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
326 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
327 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
328 unscheduling timer at the same time as another timer fires.
329 * bug fix: don't reschedule timers for dead threads.
330 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
331 * bug fix: copying output from RUN-PROGRAM to a stream signalled
332 bogus errors if select() was interrupted.
333 * enhancement: add support for fcntl's struct flock to SB-POSIX.
335 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
336 * enhancement: cleaner backtraces for interactive interrupts, as
337 well as other cases where the interesting frames used to be
338 obscured by interrupt handling frames.
339 * enhancement: untracing a whole package using (UNTRACE "FOO") is
340 now supported, and tracing a whole package using (TRACE "FOO") now
341 traces SETF-functions as well.
342 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
343 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
344 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
345 * unreadably printed representation of hash-tables now includes
347 * bug fix: partially fixed #188: type propagation from assignments
348 is now more efficient.
349 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
350 'DOUBLE-FLOAT) are not flushable.
351 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
352 full address of the object, and none of the tag bits.
353 * bug fix: readably printing hash-tables now respects other printer
354 control variables. (reported by Cedric St-Jean)
355 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
356 keyword with MAKE-HASH-TABLE.
357 * bug fix: export SB-POSIX:MKSTEMP.
358 * bug fix: SORT was not interrupt safe.
359 * bug fix: XREF accounts for the last node of each basic-block as
361 * bug fix: MAKE-INSTANCE optimizations interacted badly with
362 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
363 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
364 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
365 create obsolete instances in the case of redefinition or
366 obsoletion of a superclass. (thanks to Andy Hefner)
367 * bug fix: Support for the Alpha architecture has been revived; it had
368 suffered somewhat from lack of maintenance since sbcl-1.0.
369 * improvements to the Windows port:
370 ** The system detects the codepage to use at startup, instead of
371 using the value from the saved core. (thanks to Kei Suzuki)
373 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
374 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
375 (see documentation for details.)
376 * revived support for OpenBSD (contributed by Josh Elsasser)
377 * partially fixed bug #108: ROOM no longer suffers from occasional
378 (AVER (SAP= CURRENT END)) failures.
379 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
380 bodies no longer cause a WARNING to be signalled. (reported by
382 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
383 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
384 the bug in TRUNCATE.) (reported by Michael Weber)
385 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
386 no samples. (reported by Andy Hefner)
387 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
388 no longer appear as (NIL ...) frames in backtraces.
389 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
390 is now actually exported from SB-EXT as documented. (reported by
392 * bug fix: sb-aclrepl now correctly understands how to inspect
393 single-floats on 64-bit platforms where single-floats are not boxed.
394 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
395 yet been finalized. (reported by Levente Meszaros)
396 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
397 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
398 SBCL-specific optimize qualities.
400 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
401 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
402 an executable in the search path, and does so in the child
403 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
404 been removed; it can be found in the CVS history, for somebody who
405 needs that search behavior (see the manual).
406 * minor incompatible change: compiler policy re. weakening type
407 checks has changed: now type checks are weakened only if SAFETY < 2
409 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
410 unparsing of directory pathnames as files. Analogously,
411 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
412 filename to parse into a directory pathname.
413 * enhancement: implicit generic function creation now signals a
414 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
415 users can bind handlers for and muffle around calls to LOAD.
416 * enhancement: RUN-PROGRAM allows unicode arguments and environments
417 to be used (using the default stream external format), and allows
418 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
419 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
420 strings and vectors whose element-type or simplicity is not fully
421 known at compile-time.
422 * optimization: STRING-TRIM and related functions no longer allocate
423 a new string when no trimming needs to be performed. These functions
424 are also faster than before when the input string has been declared
426 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
427 * optimization: READ-LINE is significantly faster for files containing
429 * optimization: non-open coded uses of character comparison operators
430 (e.g. char=) no longer cons when called with more than one parameter
431 on platforms supporting dynamic-extent allocation.
432 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
433 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
434 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
436 * bug fix: some sequence functions elided bounds checking when
438 * bug fix: too liberal weakening of union-type checks when SPEED >
440 * bug fix: more bogus fixnum declarations in ROOM implementation
443 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
444 * new feature: MAKE-HASH-TABLE now experimentally accepts a
445 :SYNCHRONIZED argument, which makes the hash-table safe for
446 concurrent accesses (but not iteration.) See also:
447 SB-EXT:WITH-LOCKED-HASH-TABLE, and
448 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
449 * optimization: CONCATENATE on strings is an order of magnitude faster
450 in code compiled with (> SPEED SPACE).
451 * optimization: SUBSEQ is ~50% faster on lists.
452 * bug fix: bug 417 fixed -- source location reporting is now more robust.
453 * bug fix: SUBSEQ on a list will now correctly signal an error if if
454 END is smaller then START.
455 * bug fix: SB-PROFILE will no longer report extra consing for nested
456 calls to profiled functions.
457 * bug fix: ROOM implementation had bogus fixnum declarations which
458 could cause type-errors when calling ROOM on large images.
459 * bug fix: if file compilation is aborted, the partial fasl is now
460 deleted, and COMPILE-FILE returns NIL as the primary value.
461 * bug fix: number of thread safety issues relating to SBCL's internal
462 hash-table usage have been fixed.
463 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
464 be returned from its body when the values were being returned
465 using unknown-values return convection and the W-P-O was wrapped
466 inside an UNWIND-PROTECT.
467 * bug fix: sb-posix should now compile again under Windows, enabling
470 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
471 * incompatible change: hash-table accessor functions are no longer
472 automatically protected by locks. Concurrent accesses on the same hash-table
473 from multiple threads can give inconsistent results or even corrupt the
474 hash-table completely. Multi-threaded applications should do their own
475 locking at the correct granularity. In the current implementation it is
476 still safe to have multiple readers access the same table, but it's not
477 guaranteed that this property will be maintained in future releases.
478 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
479 and will signal an error at runtime.
480 * enhancement: SB-THREAD package now exports a semaphore interface.
481 * enhancement: CONS can now stack-allocate on x86 and
482 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
484 * enhancement: nested lists can now be stack allocated on
485 platforms providing stack allocation support.
486 * enhancement: dynamic-extent support has been extended to support
487 cases where there are multiple possible sources for the stack
489 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
490 if the mutex is uncontested on Linux.
491 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
492 as specified by the CLHS. (thanks to Tobias Rittweiler)
493 * bug fix: NaN comparison now works on x86-64.
494 * bug fix: CLOSE :ABORT T on a stream with pending output now
496 * bug fix: instances of non-standard metaclasses using standard
497 instance structure protocol sometimes missed the slot type checks
499 * bug fix: known functions can be inlined in high-debug code.
501 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
502 * minor incompatible change: the MSI installer on Windows no longer
503 associates .lisp and .fasl files with the installed SBCL.
504 * minor incompatible change: :UNIX is no longer present in *FEATURES*
505 on Windows. (thanks to Luis Oliviera)
506 * new feature: SB-CLTL2 contrib module now implements
507 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
508 * optimization: scavenging weak pointers is now more efficient,
509 requiring O(1) instead of O(N) per weak pointer to identify
510 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
511 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
512 method bodies using constant slot-names when the first argument is
513 a specializer parameter for the method.
514 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
515 names, when the class of the instance is a direct instance
516 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
517 as slow as the constant slot-name case.)
518 * optimization: member type construction is now O(N) instead
520 * optimization: UNION and NUNION are now O(N+M) for large
521 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
523 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
524 now more readable in environments like Slime which display it.
525 (thanks to Tobias C. Rittweiler)
526 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
527 was able to infer the correct argument type for the object on which
528 the CAS operation was being performed.
529 * bug fix: copy propagation interfered with parallel assignment
530 semantics in local calls. (reported by Paul Khuong)
531 * bug fix: the signed modular fixnum shift compiled to wrong code on
532 x86 and x86-64. (spotted by a slight modification to some of
535 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
536 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
537 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
538 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
540 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
541 and generic function now print the object identity for anonymous
542 instances. (thanks to Attila Lendvai)
543 * enhancement: as an extension to MOP, SBCL now supports SETF of
544 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
545 (thanks to Attila Lendvai)
546 * enhancement: sb-cover has an alternate annotation mode which puts
547 the form annotations at the car of the form, instead of annotating
548 it completely. The benefit of this mode is that it shows better
549 which forms were instrumented by the compiler.
550 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
551 by printer control variables. (reported by Dan Corkill)
552 * bug fix: system leaked memory when delayed output was performed by
553 the OS in smaller chunks then expected. (thanks to David Smith)
554 * bug fix: system leaked memory when file streams were not closed
556 * bug fix: large objects written to slow streams that were modified
557 after the write could end up with the modified state written to
558 the underlying file descriptor.
559 * bug fix: multiple threads operating in parallel on the same stream
560 could cause buffer-overflows.
561 * bug fix: source location information is stored correctly
562 (broken since 1.0.6). This bug would generally show up as the
563 Slime debugger highlighting the wrong form when the sldb-show-source
565 * bug fix: Branch forms are again annotated as branches in the sb-cover
567 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
568 on x86-64. (reported by Gregory Vanuxem)
569 * bug fix: EQUALP could return wrong results for structures with raw
570 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
571 word). (reported by Vjacheslav Fyodorov)
572 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
575 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
576 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
577 atomic compare-and-swap operations on threaded platforms.
578 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
579 allows assigning a global minimum value to optimization qualities
580 (overriding proclamations and declarations).
581 * enhancement: closed over variables can be stack-allocated on x86
583 * performance bug fix: GETHASH and (SETF GETHASH) are once again
585 * optimization: slot definition lookup is now O(1). This speeds up
586 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
587 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
588 * optimization: ASSOC and MEMBER can now be open-coded for all
589 combinations of keyword arguments when second argument is constant
590 and SPEED >= SPACE. In other cases a specialized version is
592 * bug fix: using obsoleted structure instances with TYPEP and
593 generic functions now signals a sensible error.
594 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
595 (reported by Kristoffer Kvello)
596 * bug fix: backtrace construction is now more careful when making
597 lisp-objects from pointers on the stack, to avoid creating bogus
598 objects that can be seen by the GC.
599 * bug fix: defaulting of values in contexts expecting more than 7
600 variables now works on x86-64. (reported by Christopher Laux)
601 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
603 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
604 as the property-list of a symbol.
605 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
606 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
607 situations requested, are once again file-compileable. (reported
610 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
611 * MOP improvement: support for user-defined subclasses of
612 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
613 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
614 the expansion of DEFMETHOD, is responsible for generating a form
615 which creates a list of specializers when evaluated. Additional
616 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
617 debugging and introspective support.
618 * minor incompatible change: the (unsupported) spinlock interface
619 has changed: free spinlock now has the value NIL, and a held spinlock
620 has the owning thread as its value.
621 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
622 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
624 * enhancement: name of a socket-stream is now "a socket" instead of
626 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
627 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
628 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
629 for generic functions. (Thanks to Tobias C. Rittweiler)
630 * optimization: bignum printing speed has been improved by 20-40%
631 (depending on the bignum size.)
632 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
634 * bug fix: the cache used by the CLOS to store precomputed effective
635 methods, slot offsets, and constant return values is now thread and
637 * bug fix: generic function dispatch function updating is now thread
638 and interrupt safe (in the sense that the known issues have been
640 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
641 * bug fix: interning EQL-specializers is now thread and interrupt safe.
642 * bug fix: asdf systems with dependencies to the SB-POSIX or
643 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
644 * bug fix: interrupt safety of applicable method computation has been
647 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
648 * new contrib: sb-cover, an experimental code coverage tool, is included
650 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
651 significantly faster.
652 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
653 produce more efficient code on x86-64 if the compiler can determine
654 that (+ INDEX <constant>) does not require a bounds check and FOO
655 has an element type at least 8 bits wide.
656 * enhancement: a new, experimental synchronous timeout facility is
657 provided. Refer to SB-SYS:WITH-DEADLINE for details.
658 * enhancement: when a symbol name conflict error arises, the
659 conflicting symbols are always printed with a package prefix.
660 (thanks to Kevin Reid)
661 * enhancement: stepping is now once again supported on the SPARC and
662 MIPS platforms. (It is also now more likely to work on CheneyGC
664 * enhancement: sb-sprof can now also track and report accurate call
666 * bug fixes: the treatment of non-standard subclasses of
667 SB-MOP:SPECIALIZER is more correct.
668 * incompatible change: PURIFY no longer copies the data from the
669 dynamic space into the static and read-only spaces on platforms
670 that use the generational garbage collector
671 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
673 * bug fix: GC race condition occasionally resulting in crashes with
674 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
676 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
678 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
679 a STYLE-WARNING to be signalled (regression from 1.0.4.)
680 * bug fix: an asynchronous interrupt could previously leave the
681 system running with GC inhibited.
682 * bug fix: a DECLARE form evaluated at top-level now causes an error
683 rather than silently (or verbosely) returning NIL.
684 * bug fix: trying to dissassemble functions compiled at high DEBUG could
685 result in a error being signalled due to source form lookup errors.
686 (reported by Peter Graves)
688 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
689 * incompatible change: removed writer methods for host-ent-name,
690 host-ent-addresses -- changing the values did not update the DNS
692 * minor incompatible change: changed experimental JOIN-THREAD interface
693 * documentation: the manual now lists reader and writer methods
694 in class slot documentation sections. (thanks to Richard M Kreuter)
695 * documentation: unwinding from asyncronous events has been
696 documented as unsafe.
697 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
698 in multithreaded application code.
699 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
700 platforms. (thanks to James Anderson for the optimization hint)
701 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
703 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
704 variants no longer cons.
705 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
706 their NOT- variants no longer cons.
707 * optimization: EQUAL hash tables no longer use SXHASH for objects
708 of all data types, but instead use an EQL hash for types for which
709 EQUAL is the same as EQL.
710 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
711 are significantly faster.
712 * optimization: new STRING-OUTPUT-STREAM implementation is much
713 faster for large outputs and conses 30% less on average.
714 * enhancement: XREF information is now collected for references made
715 to global variables using SYMBOL-VALUE and a constant argument.
716 * enhancement: SIGINT now causes a specific condition
717 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
718 * bug fix: FILE-POSITION used to signal an error in some cases where
719 ANSI requires it to return NIL.
720 * bug fix: ADJUST-ARRAY is now interrupt-safe.
721 * bug fix: adding and removing fd-handlers is now interrupt-safe.
722 * bug fix: inlined calls to C now ensure 16byte stack alignment on
724 * bug fix: bad type declaration in the CLOS implementation has
725 been fixed. (reported by James Anderson)
726 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
727 (thanks to Lutz Euler)
728 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
729 required by the CLHS. (reported by Samium Gromoff)
730 * bug fix: dead unbound variable references now signal an error.
731 (reported by Marco Monteiro)
732 * bug fix: / with an unused value was being deleted in safe code.
733 (thanks to Marco Monteiro and Kevin Reid)
734 * bug fix: number of characters that can be written onto a single
735 line in a file is unlimited.
736 * bug fix: some GC deadlocks caused by asynchronous interrupts have
737 been fixed by inhibiting interrupts for when GC is disabled.
738 * bug fix: some interrupt safety issues with GETHASH, (SETF
739 GETHASH), CLRHASH and REMHASH have been fixed.
740 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
741 specifier no longer causes infinite recursion.
742 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
743 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
744 * bug fix: an &environment argument with the correct variable information
745 is passed to macros that are expanded during byte compilation.
746 (reported by Samium Gromoff)
747 * bug fix: a logic error was causing the hash function for bignums to
748 have excessive amounts of collisions. (reported by Faré Rideau)
749 * bug fix: modifying the contents of an array could change the return
750 value of SXHASH on that array, which is only allowed for strings
751 and bit vectors. (bug introduced in 0.9.16)
752 * improvement: the x86-64/darwin port now passes all tests (except
753 for the debugger tests) but should still be considered
754 experimental until this is fixed.
755 * improvement: a style-warning is signaled for CASE (etc) clauses with
756 duplicate keys. (thanks to Kevin Reid)
757 * improvement: macos/x86 and macos/x86-64 now use mach exception
758 handlers for dealing with illegal instructions (for trapping and
759 error handling) and memory protection violations (for GC).
761 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
762 * new platform: experimental support for x86-64/darwin (MacOS).
763 * incompatible change: the thread-safe (on most platforms) getaddrinfo
764 and getnameinfo sockets functions are used instead of gethostbyaddr
765 and gethostbyname, on platforms where the newer functions are available.
766 As a result, the ALIASES field of HOST-ENT will always be NIL on these
768 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
769 don't print the startup banner, but behave as if --noinform was passed
770 as a command line argument. (thanks to Kevin Reid)
771 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
772 * optimization: code using alien values with undeclared types is much faster.
773 * optimization: the compiler is now able to open code SEARCH in more cases.
774 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
775 * bug fix: using standardized COMMON-LISP special variables as loop
776 variables no longer signals bogus package lock violations. (reported
778 * bug fix: declaring local loop variables to be of a range-limited type
779 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
780 (reported by Andras Simon)
781 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
782 bugs remain on x86-64.)
783 * bug fix: the #= and ## reader macros now interact reasonably with
784 funcallable instances.
785 * bug fix: type-checks for function arguments were compiled using the
786 compiler policy settings of the wrong lexical environment (in 1.0.2
788 * bug fix: SHADOW accepts characters as string designators, as required
789 by the spec (thanks to Eric Marsden)
790 * bug fix: fixed GC safety issues when foreign functions are called with
791 non-base strings as arguments
792 * bug fix: more consistent error output for fatal-compiler-warnings, like
794 * bug fix: functions with proper names were showing up as NIL in
795 backtraces (reported by Edi Weitz, regression in 1.0.2)
797 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
798 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
799 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
800 produce more efficient code on the x86 if the compiler can determine
801 that (+ INDEX <constant>) does not require a bounds check and FOO
802 has an element type at least 8 bits wide.
803 * bug fix: references to undefined variables are handled the same way
804 in toplevel forms as in the normal compiler
805 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
807 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
808 (thanks to Jon Buller)
809 * improvement: faster compilation times for complex functions
810 * improvement: added readlink support to SB-POSIX (thanks to Richard
813 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
814 * improvement: experimental support for mach exception handling on
815 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
817 * improvement: support for GBK external format.
818 (thanks to Chun Tian (binghe))
819 * improvement: the debugger now displays variables that have been closed
820 over, in code compiled with (DEBUG 2) or higher
821 * improvement: support for executable cores on NetBSD (thanks to
823 * new feature: added a RESTART-FRAME debugger command
824 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
825 be used to provide an implementation for FILE-POSITION on Gray streams
826 (thanks to Eric Marsden)
827 * new feature: add syslog, openlog and closelog support to SB-POSIX
828 (thanks to Richard Kreuter)
829 * optimization: the function call overhead in code compiled with
830 a high DEBUG optimization setting is significantly
831 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
832 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
833 (thanks to Tony Martinez)
834 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
835 evaluated once (reported by Kevin Reid)
836 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
837 works again (thanks to Kilian Sprotte)
838 * bug fix: an error is signaled for tagbodies with duplicate tags
839 (thanks to Stephen Wilson)
840 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
841 * bug fix: Win32 port can now handle foreign code unwinding Lisp
842 stack frames from alien callbacks.
843 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
844 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
845 65k pages (thanks to David Woodhouse)
846 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
848 changes in sbcl-1.0.1 relative to sbcl-1.0:
849 * new platform: FreeBSD/x86-64, including support for threading.
850 * new feature: the compiler stores cross-referencing information
851 about function calls (who-calls), macroexpansion (who-macroexpands)
852 and special variables (who-binds, who-sets, who-references) for code
853 compiled with (< SPACE 3). This information is available through the
854 sb-introspect contrib.
855 * new feature: users may subclass SEQUENCE, and have instances of
856 these classes interoperate with standard Common Lisp functions if
857 a number of methods are defined. (This feature is experimental
858 and the interface subject to change based on feedback from SBCL
859 users and the general community)
860 * improvement: sb-sprof traces call stacks to an arbitrary depth on
861 x86/x86-64, rather than the previous fixed depth of 8
862 * improvement: another pthread back-end of mutex "pthread-futex".
863 * bug fix: non-ascii command-line arguments are processed correctly
864 (thanks to Yaroslav Kavenchuk)
865 * bug fix: non-required arguments were not passed correctly when a method
866 defined using DEFMETHOD was called from a mop-generated method using
867 CALL-NEXT-METHOD (reported by Pascal Costanza)
868 * bug fix: recursion is now permitted in accessors through
869 SLOT-UNBOUND. (reported by Pascal Costanza)
870 * bug fix: an error was signaled at startup if the HOME environment
871 variable was defined, but had an empty value (reported by Peter Van Eynde)
872 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
873 signal a PROGRAM-ERROR, not a BUG.
874 * bug fix: SB-POSIX:READDIR works when built with large file support.
875 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
877 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
878 for better automatic indentation support. (thanks to Matt Pillsbury)
879 * optimization: loading generic functions no longer takes O(n^2) time,
880 proportional to the amount of methods in the generic function
881 (reported by Todd Sabin and Jeremy Brown)
882 * optimization: the FIND and POSITION family of sequence functions
883 are significantly faster on arrays whose element types have been
885 * improvements to the Windows port:
886 ** Intermittent heap corruption problems have been fixed. (thanks
887 to Alastair Bridgewater)
888 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
890 ** Lisp is able to unwind foreign exception frames from alien
891 callbacks. (thanks to Alastair Bridgewater)
893 changes in sbcl-1.0 relative to sbcl-0.9.18:
894 * improvement: experimental support for threading on FreeBSD/x86.
895 (thanks to NIIMI Satoshi)
896 * improvement: runtime option --dynamic-space-size can be used
897 to set the size of the dynamic space reserved on startup.
898 * improvement: floating point modes in effect are now saved in
899 core, and restored on startup.
900 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
901 startup, not time since first call to GET-INTERNAL-REAL-TIME.
902 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
903 threads are not running after *SAVE-HOOKS* have run.
904 * improvement: writes to CLOS instance slots are type-checked in code
905 compiled with (SAFETY 3)
906 * improvement: floating-point exception handling on FreeBSD (thanks to
908 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
909 (thanks to Zach Beane)
910 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
912 * improvement: added support for the Shift-JIS external format.
913 (contributed by NIIMI Satoshi)
914 * improvement: callbacks are supported on Linux/PPC. (thanks to
916 * bug fix: compiler bug triggered by a (non-standard) VALUES
917 declaration in a LET* was fixed. (reported by Kaersten Poeck)
918 * bug fix: file compiler no longer confuses validated and already
919 dumped structurres. (reported by Kaersten Poeck)
920 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
921 fill-pointer signals a type-error as required. (thanks to
923 * bug fix: disassemly of funcallable instances works.
924 * bug fix: single stepping on PPC.
925 * bug fix: fix thread-safety problems in the type system (generally
926 manifesting as nonsensical errors like "STRING is a bad type specifier
927 for sequences" or "The value 1 is not of type FIXNUM")
928 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
929 (reported by Josip Gracin)
930 * bug fix: an error is signaled for attempts to displace arrays with
931 incompatible element types (thanks to Mario Mommer)
932 * bug fix: more correct handling of wide characters in debug info
933 (bug reported by Attila Lendvai and fixed by Juho Snellman)
934 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
935 and don't cause extra consing
936 * optimization: MAP and MAP-INTO are significantly faster on vectors
937 whose elements types have been declared.
938 * Improvements to SB-SPROF:
939 ** Support for allocation profiling
940 ** Reduced profiling overhead, especially for long profiling runs
941 * Improvements to the Windows port:
942 ** floating point exceptions are now reported correctly.
943 ** stack exhaustion detection works partially.
944 ** more accurate GET-INTERNAL-REAL-TIME.
945 ** better RUN-PROGRAM behaviour in case of errors in the child
947 ** PROBE-FILE now simplifies pathnames correctly.
948 ** DIRECTORY now works correctly with :WILD-INFERIORS.
949 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
950 1st 1970 (although time timezone data will be unreliable).
951 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
953 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
954 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
955 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
957 * bug fix: two potential GC deadlocks affecting threaded builds.
958 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
959 returns T (reported by Anton Kazennikov)
960 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
961 with non-variable places
962 * bug fix: remove a race condition in the setting of
963 funcallable-instance functions, this should make threaded CLOS
964 code more stable against memory faults.
965 * bug fix: corruption of specials when unbinding is interrupted by an
966 asynchronous unwind (reported by Hannu Koivisto)
967 * improvement: the debugger will now also display local variables that
968 are only used once, for code compiled with a DEBUG optimization quality
971 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
972 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
973 * incompatible change: External-format support for FFI calls. The
974 SB-ALIEN:C-STRING no longer implies an ASCII
975 external-format. Instead the string is subject to external-format
976 conversion. Additionally return values of type SB-ALIEN:C-STRING
977 are by default of type (SIMPLE-ARRAY CHARACTER), not
978 SIMPLE-BASE-STRING. For an alien type that behaves like the old
979 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
980 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
981 * incompatible change: SB-EXT package no longer contains the
982 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
983 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
985 * incompatible change: the single-stepper is no longer available
986 on Alpha, Mips and Sparc platforms.
987 * minor incompatible change: the direct superclasses of
988 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
989 not (STANDARD-OBJECT FUNCTION). This makes the
990 class-precedence-lists of GENERIC-FUNCTION and
991 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
993 * minor incompatible change: the default stream external format on
994 non-unicode SBCL is no longer detected from the locale, but is always
996 * new feature: Add a version of evaluator that uses an interpreter instead
997 of the compiler. EVAL still uses the compiler by default, to switch it
998 to use the interpreter, set the value of the variable
999 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1000 * minor incompatible change: the single-stepper REPL has been merged
1001 with the normal debugger (see the "Stepping" heading of the debugger help
1002 for more details). The debugger command STEP will no longer switch
1003 to the single-stepper REPL.
1004 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1005 for a type now works.
1006 * bug fix: loading of default sysinit file works. (thanks to Leonid
1008 * bug fix: better detection of circularities in the file-compiler.
1009 (reported by Marco Monteiro)
1010 * bug fix: the CL pathname functions now work with files that have
1011 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1012 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1013 systems with Unix98 pty semantics.
1014 * bug fix: ASDF-INSTALL will now work with bsd tar.
1015 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1017 * bug fix: timers expiring in dead threads no longer cause a
1018 type-error (reported by Paul "Nonny Mouse").
1019 * bug fix: thanks to more lightweight single-stepper instrumentation,
1020 code compiled with (DEBUG 3) will compile and execute significantly faster,
1021 and will have more accurate type-inferencing than before
1022 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1023 whose bindings are modified
1024 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1025 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1026 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1027 CL:SOFTWARE-VERSION with proper version
1029 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1030 * feature: implemented the READER-METHOD-CLASS and
1031 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1032 as specified by AMOP.
1033 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1035 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1036 (thanks to Lutz Euler)
1037 * optimization: hashing of general arrays and vectors has been
1038 improved. (reported by Any Fingerhut)
1039 * enhancement: SB-INTROSPECT is now able to find definitions of
1040 profiled functions. (thanks to Troels Henriksen)
1041 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1042 as well, allowing compiler-macros for SETF-functions to expand.
1043 * enhancement: step-instrumentation no longer wraps known
1044 single-value functions with multiple-value context, allowing
1045 better type inference.
1046 * fixed bug #337: use of MAKE-METHOD in method combination now works
1047 even in the presence of user-defined method classes. (reported by
1048 Bruno Haible and Pascal Costanza)
1049 * fixed bug #339(c): if there are applicable methods not part of any
1050 long-form method-combination group, call INVALID-METHOD-ERROR.
1051 (reported by Bruno Haible)
1052 * fixed bug #361: the :FUNCTION initarg in the protocol for
1053 initialization of methods can now be used to override
1054 internally-produced optimized functions. (reported by Bruno
1056 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1057 system-provided lambda expression no longer cause warnings about
1058 unbound #:|pv-table| symbols.
1059 * bug fix: improved the handling of type declarations and the
1060 detection of violations for keyword arguments with non-constant
1062 * bug fix: potentially erronous calls to PATHNAME and
1063 MERGE-PATHNAMES were being flushed in some cases.
1064 (reported by Richard Kreuter)
1065 * bug fix: compiled calls to TYPEP were mishandling obsolete
1066 instances. (reported by James Bielman and Attila Lendvai)
1067 * bug fix: format strings with ~> without matching ~< no longer
1068 trigger an AVER, but signal an understandable error instead.
1069 (reported by Antonio Martinez)
1070 * bug fix: specifying an output-file without a pathname-type for
1071 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1072 of input-file instead of "fasl". (reported by Robert Dodier)
1073 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1074 (reported by James Y Knight).
1075 * bug fix: compiler-macros-function did not consider the environment
1076 argument for shadowing by local functions.
1077 * bug fix: compiler-macros expansion was inhibited by local INLINE
1079 * bug fix: inline expansions of known functions were subject to
1080 step-instrumentation in high debug policies, leading to problems
1081 with type-inference.
1082 * bug fix: compiler failed to differentiate between different CONS
1083 types in some cases.
1084 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1085 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1086 * bug fix: #368: incorrect use of expressed vs. upgraded array
1088 * bug fix: #306a: more precise unions of array types.
1089 * thread-safety improvements:
1090 ** CONDITION-WAIT could return early on Linux, if the thread was
1091 interrupted and subsequently continued with SIGCONT.
1092 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1094 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1095 * added support for the ucs-2 external format. (contributed by Ivan
1097 * minor incompatible change: pretty printing of objects of type
1098 (cons symbol) is, in the default pprint-dispatch-table, now
1099 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1101 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1102 called later in a class's lifetime, possibly as late as when the
1103 first instance of the class is created. Previously,
1104 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1105 class became finalizeable.
1106 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1107 for multibyte external-format streams. (thanks to "vbzoli")
1108 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1109 with :ALLOCATION :CLASS inherited from superclasses of the
1111 * fixed bug: anonymous classes can now be created using the :NAME
1112 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1113 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1114 * fixed bug: core-files saved with :EXECUTABLE T can again be
1115 executed when SBCL_HOME isn't set. (reported by James Knight)
1116 * fixed bug: toplevel LOCALLY forms with declarations could
1117 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1118 * fixed bug: printing from several different threads using different
1119 values of *print-case* could cause invalid output, due to
1120 some internal special variables of the printer not being bound
1121 thread-locally (reported by Max Mikhanosha)
1122 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1123 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1124 (reported by Pascal Costanza)
1125 * fixed bug: FINALIZE-INHERITANCE is called from
1126 REINITIALIZE-INSTANCE on classes when the class has previously
1127 been finalized, as required by AMOP.
1128 * minor code generation optimizations:
1129 ** better register allocation in CLOS dispatching functions
1130 ** overflow detection when coercing signed bytes to fixnums on x86-64
1131 ** is now implemented with one IMUL instruction instead of three shifts
1132 ** more efficient bit-vector access on x86 and x86-64
1133 ** more efficient access to raw structure slots on x86 and x86-64
1134 * fixed some bugs revealed by Paul Dietz' test suite:
1135 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1136 return its argument.
1138 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1139 * feature: thread support on Solaris/x86, and experimental thread support
1141 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1143 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1144 default method for SLOT-UNBOUND.
1145 * minor incompatible change: prevent the user from specializing the
1146 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1147 somewhat counter to the intent of the protocol, I (CSR) think, and
1148 additionally it just doesn't work in SBCL as currently
1149 implemented, thanks to optimizations (that are always valid for
1150 the other three SLOT-VALUEish functions, but not for the setter).
1151 * minor incompatible change: the :SB-LDB feature is now enabled by
1152 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1153 the low-level debugger.
1154 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1155 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
1156 down to an SB-SYS:FD-STREAM, allowing direct communication in
1157 more cases. Temporary files and pipes are still used as a fallback
1159 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1160 on the non-reentrant C functions localtime(3) and gmtime(3).
1161 * bug fix: global optimization policy was not visible in LOCALLY and
1163 * bug fix: class objects can be used as specializers in methods.
1164 (reported by Pascal Costanza)
1165 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1166 with a type error. (reported by blitz_ on #lisp)
1167 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1168 failed with a type error. (reported by Pascal Bourguignon)
1169 * bug fix: merging pathnames against defaults with :DIRECTORY
1170 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1171 (reported by James Y Knight)
1172 * bug fix: saving large (>2GB) cores on x86-64 now works
1173 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1174 constant index and a (simple-array (signed-byte 32)) array
1175 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1176 error (patch by Robert J. Macomber)
1177 * feature: TIME now displays the amount of run-time spent in GC
1178 * bug fix: The debugger now does a better job of respecting
1179 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1180 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1181 workaround for bug 403.)
1182 * bug fix: floating point exception handling now works on FreeBSD
1183 (thanks to NIIMI Satoshi)
1184 * fixed some bugs revealed by Paul Dietz' test suite:
1185 ** MISC.641: LET-conversion were not supposed to work in late
1187 * improvements to the Win32/x86 port:
1188 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1189 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1191 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1192 * new feature: source path information is generated for macro-expansion
1193 errors for use in IDE's like Slime (thanks to Helmut Eller)
1194 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1195 * bug fix: compiler does not loop forever on an invalid type in
1197 * improvement: compilation of most CLOS applications is significantly
1199 * optimization: added a limited bytecode compiler for simple toplevel
1200 forms, speeding up compilation and FASL loading
1201 * bug fix: the statistical profiler now properly distinguishes anonymous
1204 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1205 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1206 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1207 into subclasses of the finalized class. Now user calls to
1208 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1209 system return before any subclasses are finalized.
1210 * minor incompatible change: The reader no longer ignores errors
1211 regarding non-existent packages in #+ and #- feature tests.
1212 * new feature: command line options --no-sysinit, --no-userinit to
1213 inhibit loading the corresponding init files
1214 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1215 for sending data through UDP sockets (thanks to François-René Rideau)
1216 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1217 error is signalled instead (thanks to François-René Rideau)
1218 * minor incompatible change: Error signalling behaviour of lexical
1219 operations violating package locks has changed slightly. Refer to
1220 documentation on package locks for details.
1221 * enhancement: EVAL can process IF-expressions without resorting to the
1223 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1224 constant-folded properly due to missing out-of-line functions.
1225 (reported by Mika Pihlajamäki)
1226 * bug fix: LISTEN sometimes returned T even in cases where no data was
1227 immediately available from the stream
1228 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1229 were reversed. (reported by Levente Mészáros)
1230 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1231 when given a vector displaced to an adjustable array. (reported
1233 * bug fix: derivation of float boundaries from numbers outside the
1234 appropriate float range (reported by John Wiseman)
1235 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1237 * bug fix: precomputing cache entries for generic functions with
1238 some subclasses of specializers as yet invalid does not attempt to
1239 fill a cache line with a negative offset. (reported by Levente
1241 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1242 allow condition class objects as arguments to DOCUMENTATION and
1243 (SETF DOCUMENTATION); only find and set documentation for
1244 structure names for the STRUCTURE doc-type. (suggested by Gary
1246 * improvements to the Win32/x86 port:
1247 ** (user-homedir-pathname) and default initialization file
1248 locations now know about the user's "Documents and Settings"
1249 directory (thanks to Yaroslav Kavenchuk)
1250 ** run-program is implemented (thanks to Mike Thomas)
1251 ** sockets support (thanks to Timothy Ritchey)
1252 ** better backtrace support (thanks to Alastair Bridgewater)
1253 ** sb-grovel supported
1254 ** asdf-install and sb-posix work somewhat
1255 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1256 * improvements to the Solaris/x86 port:
1257 ** works on Solaris 11/Solaris Express
1258 ** floating-point exception handling support
1259 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1260 * fixed some bugs revealed by Paul Dietz' test suite:
1261 ** REMOVE-METHOD returns its generic function argument even when
1262 the method is not one of the generic functions' methods.
1263 ** objects declared as MEMBER types can be admissible arguments to
1264 structure accessors.
1265 ** printing characters should simply be printed by the FORMAT ~:C
1267 ** compiler failure when compiling functions with hairy constant
1268 defaults for optional parameters.
1269 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1270 function, which is already optimized.
1272 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1273 * new platform: experimental support for SBCL x86/Darwin, including
1274 MacOS X 10.4.5 on Intel.
1275 * new feature: Unicode character names are now known to the system
1276 (through CHAR-NAME and NAME-CHAR).
1277 * new feature: the filesystem location of SBCL's core file is
1278 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1279 * minor incompatible change: the contrib modules SB-POSIX and
1280 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1281 this change is to make it easier to distribute
1282 location-independent binaries.
1283 * bug fix: as implied by AMOP, standardized classes no longer have
1284 slots named by external symbols of public packages. (reported by
1286 * optimization: calling functions via constant symbols -- as in
1287 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1288 via the function object as in (FUNCALL #'FOO).
1289 * optimization: on x86 and x86-64, the calling convention for the
1290 case of dealing with an unknown number of values has been altered
1291 to be friendlier to the prediction heuristics implemented,
1292 particularly with reference to CALL and RET pairing. (thanks to
1293 Alastair Bridgewater)
1294 * optimization: on x86, the code for access to thread-local symbol
1295 values and binding/unbinding of thread-local symbols is smaller.
1296 (thanks to Alastair Bridgewater)
1297 * enhancement: CONSTANTP is now able to determine constantness of
1298 more complex forms, including calls to constant-foldable standardized
1299 functions and some special forms beyond QUOTE.
1300 * fixed bug: occasional GC crashes on Solaris/x86
1301 * optimization: x86-64 supports stack allocation of results of simple
1302 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1303 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1304 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1305 (thanks to James Knight)
1306 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1307 by the standard (thanks to Stephen Compall)
1309 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1310 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1311 be used for bundling the runtime and the core file into one
1312 executable binary. This feature is not currently supported on all SBCL
1313 platforms. (thanks to James Bielman and NIIMI Satoshi)
1314 * new feature: a generational or ephemeral garbage collector is now
1315 the default on the PowerPC platform (both Linux and Darwin). The
1316 old Cheney (stop and copy) collector is a build-time option.
1317 (thanks to Cyrus Harmon, after Raymond Toy)
1318 * minor incompatible change: the method by which SBCL finds its
1319 contributed modules has changed; it no longer relies on symbolic
1320 links from an $SBCL_HOME/systems directory, but searches directly
1321 in the subdirectories of $SBCL_HOME.
1322 * enhancement: the dynamic heap size on the Linux/PPC platform is
1323 markedly larger, even using the older Cheney garbage collector.
1324 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1325 certain complicated string types. (reported by Gary King)
1326 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1327 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1328 * fixed bug: DOCUMENTATION on structures no longer signals an
1329 error if no structure type of the right name exists. (reported by
1331 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1332 applicable non-standard primary or :AROUND method on
1333 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1334 no longer cause unbound variable errors. (reported by Kevin Reid)
1335 * fixed bug: metacircle resolution in cases where methods have slots
1336 added before the slots from STANDARD-METHOD. (reported by Jean
1338 * fixed bug: the Power PC assembly code for calling into lisp
1339 sometimes computed its return address wrongly (depending on the
1340 15th bit of the address, fixed at link time). This used to
1341 manifest itself in a segmentation violation while building PCL.
1342 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1343 many others over the years)
1344 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1345 the stack pointer (treated as a signed integer) is negative.
1346 (thanks to Peter van Eynde)
1348 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1349 * new platform: experimental support for the Windows operating
1350 system has been added. (thanks to Alastair Bridgewater)
1351 * fixed several bugs in and robustified the PPC FFI (including
1352 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1353 * bug fix: allow non-simple string symbol names (reported by Paul
1355 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1357 * bug fix: saving a core corrupted callbacks on x86/x86-64
1358 * bug fix: closed a loophole in metacircularity detection and
1359 grounding in the PCL implementation of CLOS.
1360 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1361 (reported by tomppa on #lisp)
1362 * bug fix: clear the direction flag on Lisp -> C transitions, as
1363 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1364 (reported by Andrej Grozin and Hendrik Maryns)
1365 * optimization: major improvements to GC efficiency on GENCGC platforms
1366 * optimization: faster implementation of EQUAL
1367 * optimization: emit more efficient opcodes for some common
1368 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1369 * optimization: several other minor code-generation improvements on x86-64
1370 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1372 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1373 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1374 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1375 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1376 by ANSI as a generic function, and for consistency (SETF
1377 GENERIC-FUNCTION-NAME) is treated likewise.
1378 * fixed bug #233.b: make constraint propagation notice when a variable
1379 value is changed after it is referenced but before it is used
1380 * fixed bug #296: no more arbitrary behaviour from filenames with
1381 odd characters as --load arguments. (reported by Adam Warner)
1382 * fixed bug #390: :CHARACTER-SET pathname components now work as
1383 expected. (reported by Tim Daly Jr)
1384 * fixed bug #391: complicated :TYPE intersections in slot
1385 definitions no longer cause an error in PCL internals.
1386 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1387 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1388 returning the number of octets which would be written to the
1389 file-stream. (thanks to Robert J. Macomber)
1390 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1391 arguments to the internal stream functions. (thanks to David
1393 * bug fix: stack exhaustion is now handled on the x86/SunOS
1394 platform. (thanks to Daisuke Homma)
1395 * bug fix: more accurate ROOM results on GENCGC platforms
1396 * optimization: improved type inference for arithmetic-for
1397 index variables in LOOP
1398 * optimization: faster floating-point SQRT on x86-64
1399 * fixed some bugs revealed by Paul Dietz' test suite:
1400 ** DOCUMENTATION returns NIL instead of "" for method combinations
1401 that don't have a docstring
1403 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1404 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1405 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1406 therefore are not customizeable by user code (as seems to be at
1407 least permitted and maybe required by AMOP). As a consolation,
1408 however, the SBCL implementation of these functions now calls
1409 REINITIALIZE-INSTANCE as specified by AMOP.
1410 * bug fix: slot-definition documentation is propagated as per ANSI
1411 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1412 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1413 argument, as do eslotd initialization methods. (from Pascal
1414 Costanza's "Closer" project)
1415 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1416 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1418 * bug fix: it is now possible to have more than one subclass of
1419 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1420 (reported by Bruno Haible, Pascal Costanza and others)
1421 * bug fix: the dependent update protocol now works for generic
1422 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1423 and Pascal Costanza)
1424 * bug fix: condition-class instances corresponding to
1425 DEFINE-CONDITION forms are now created eagerly. (reported by
1426 Kalle Olavi Niemitalo on comp.lang.lisp)
1427 * bug fix: floating point printing is more accurate in some
1428 circumstances. (thanks to Simon Alexander)
1429 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1430 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1431 * bug fix: callbacks on OS X now preserve stack-alignment.
1432 (thanks to Cyrus Harmon)
1433 * enhancement: the x86-64 disassembler is much better at
1434 disassembling SSE instructions. (thanks to Lutz Euler)
1435 * enhancement: CHECK-TYPE on a variable now allows type-inference
1436 (thanks to Vincent Arkesteijn)
1437 * optimization: improved performance of EUC-JP external format.
1438 (thanks to NIIMI Satoshi)
1439 * optimization: performance improvements to IO on file streams of
1440 :ELEMENT-TYPE CHARACTER
1441 * optimization: much faster memory allocation on x86-64
1442 * optimization: faster garbage collections (latency and throughput)
1444 * optimization: faster bignum subtraction and division on x86 and x86-64
1445 (thanks to Lutz Euler)
1446 * optimization: more accurate type-inference for loops that use a
1447 floating point index variable or a negative step.
1449 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1450 * bug fix: add a workaround to SBCL looping infinitely at startup on
1451 Linux kernels with apparently buggy implementations of personality().
1452 (thanks to Svein Ove Aas)
1453 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1454 (thanks to David Lichteblau)
1455 * bug fix: local bindings shadow global symbol macros for
1456 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1457 * optimization: non-open coded uses of numeric comparison operators
1458 (e.g. >) no longer cons when called with more than one parameter
1459 on platforms supporting dynamic-extent allocation.
1460 * enhancement: saving cores with foreign code loaded is now supported
1461 on MIPS/Linux in addition to the previously supported platforms.
1462 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1463 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1464 * bug fix: division by zero in sb-sprof when no samples were collected
1465 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1466 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1467 (thanks to Alexander Kjeldaas)
1468 * new feature: ignoring the return values of destructive functions
1469 like NREVERSE signals a compile-time style-warning.
1470 (thanks to Kevin Reid)
1471 * new feature: the alignment of alien structure fields can be
1472 explicitly specified. (thanks to Cyrus Harmon)
1473 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1474 and dump core on SIGQUIT
1476 ** incompatible change: threads do not inherit values of specials
1477 from their parents (see manual)
1478 ** bug fix: threads stacks belonging to dead threads are freed by the
1479 next exiting thread, no need to gc to collect thread stacks anymore
1480 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1481 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1482 ** bug fix: dynamic variable and thread start related gc lossage
1483 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1485 * fixed some bugs revealed by Paul Dietz' test suite:
1486 ** SUBTYPEP is slightly more accurate on heinously complicated
1487 CONS types where some of the members have uncertain (in the
1488 NIL, NIL sense) type relationships to each other.
1490 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1491 no longer purified unless :PURIFY T is explicitly specified.
1492 ** Non-purified cores are significantly smaller than before
1494 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1495 * new feature: timers based on Zach Beane's excellent timer package
1496 * added support for the following external formats: koi8-u,
1497 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1498 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1499 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1500 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1501 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1502 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1503 * incompatible change: a threaded SBCL will no longer revert to
1504 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1505 * bug fix: interrupts are disabled until startup is complete; no
1506 more sigsegvs when receiving a signal to soon
1507 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1509 * bug fix: add a workaround for the memory randomization features in
1510 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1511 workaround will only be in effect on systems with the proc filesystem
1513 * bug fix: printing objects of type HASH-TABLE signals a
1514 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1516 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1517 have been running for over 50 days. (reported by Gilbert Baumann)
1518 * bug fix: the logic for getting names of functions gets less
1519 confused when confronded with alternate-metaclass
1520 funcallable-instances. (reported by Cyrus Harmon)
1521 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1522 consistent, even on internal alternate-metaclass objects.
1523 * bug fix: flush closure information collected by physical
1524 environment analysis prepass before the main pass. (bug reported
1526 * bug fix: compiler pack phase does not modify a hashtable, which is
1527 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1528 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1529 may be expanded. (reported by Alexander <malishev> on c.l.l)
1530 * bug fix: no more style-warnings when compiling code using LAST
1531 under high-SPEED low-SPACE settings. (reported by David Wallin
1533 * fixed some incompatibilities between SBCL's MOP and the MOP
1535 ** the METAOBJECT class is now implemented;
1536 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1537 STANDARD-OBJECT, as required;
1538 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1539 now compatible (as required by VALIDATE-SUPERCLASS); there
1540 remains a consistency requirement over the presence or absence
1541 of the FUNCTION class in the superclass list of finalized
1542 classes; see the manual for more details;
1543 ** the :AROUND method for COMPUTE-SLOTS on
1544 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1545 requested slot ordering.
1547 ** bug fix: parent thread now can be gc'ed even with a live
1549 ** bug fix: binding a special with PROGV to no value is not
1550 the same as that symbol not having been bound (thanks to
1552 ** bug fix: binding specials is thread safe (thanks to
1554 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1555 and SB-SPROF do not die with 'no handler for signal XX in
1556 interrupt_handle_now(..)' anymore
1557 ** bug fix: WITH-TIMEOUT works with multiple running threads
1558 * fixed some bugs revealed by Paul Dietz' test suite:
1559 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1560 the :method-class keyword argument.
1562 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1563 * new port: the Solaris operating system on x86 processors is now
1564 mostly supported, though some rough edges in the environment
1565 remain. (thanks to Daisuke Homma)
1566 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1567 space for its heap. (thanks to Thiemo Seufer)
1568 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1569 closures. (thanks to Thiemo Seufer)
1570 * minor incompatible change: eof selects abort in the debugger.
1571 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1572 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1574 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1575 deprecated, and will go away in a future revision of SBCL.
1576 * minor incompatible change: GC-ON and GC-OFF are no longer
1577 implemented with a counter, it does not matter how many times gc
1578 is switched on or off
1579 * bug fix: discriminating functions for generic function classes
1580 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1581 make invalid assumptions about method precedence order. (reported
1583 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1584 platforms. (thanks to Thiemo Seufer)
1585 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1586 * bug fix: correct pathname printing with printer escaping is on.
1587 (thanks to Kevin Reid)
1588 * bug fix: complex VOP definitions in "user-space" no longer trigger
1589 package locks. (reported by Zach Beane)
1590 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1591 for funcallable-instance functions, and is no different from
1593 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1594 characters in the current readtable. (reported by Nicholas Neuss)
1595 * bug fix: SUBTYPEP on various CONS types returns more a more
1596 accurate acknowledgment of its certainty.
1597 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1598 lists in some cases. This partially fixes bug 384.
1599 * flush all standard streams before prompting in the REPL and the
1601 * bug fix: signal handling and triggering gc do not conflict
1602 directly anymore, in particular a high frequency sb-sprof does
1603 not prevent gc from running
1604 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1605 approximation for timezone and DST information between the
1606 universal time epoch and the smallest negative 32-bit time_t.
1607 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1608 year 1899 so long as the encoded time is non-negative.
1609 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1610 the correct answer for non-constant rotate amounts when performing
1611 an inline 32-bit rotation.
1613 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1614 there is only one thread in the session
1615 ** bug fix: memory leak for streams created in one thread and
1616 written to in another
1617 ** bug fix: lockup when compiled with gcc4
1618 ** bug fix: race that allows the gc to be triggered when gc is
1620 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1621 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1623 ** bug fix: finished threads are gc'ed properly
1624 * fixed some bugs revealed by Paul Dietz' test suite:
1625 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1626 has arguments with a different set of applicable methods from
1627 the orignal arguments.
1628 ** The type error thrown by MAP now has a correct expected-type
1630 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1631 name a compiled function.
1632 ** Three MISC tests where a large bignum was improperly coerced to
1633 a float that couldn't represent that bignum during type
1634 derivation were fixed.
1635 ** SUBTYPEP can now handle types involving the negation of a
1636 list-form FUNCTION type.
1637 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1638 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1639 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1641 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1642 * New feature: Experimental support for bivalent streams: streams
1643 opened with :element-type :default now allow character and binary
1644 (unsigned-byte 8) I/O
1645 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1646 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1648 * bug fix: no more highly sporadic "couldn't check whether ~S is
1649 readable" when reading a stream and an interrupt hits in the middle
1650 of a select system call
1651 * compiler better recognizes complex arrays (reported by Eduardo
1653 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1654 for variables on SBCL built with linkage-tables. (reported by Luis
1656 * various error reporting improvements.
1657 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1658 (Thanks to Thiemo Seufer)
1659 * bug fix: nested reader invokations work correctly
1660 * bug fix: it is possible to have simultaneous references to foreign
1661 code and foreign data with the same name.
1663 ** added x86-64 support
1664 ** incompatible change: the threading api now works with thread
1665 objects instead of thread ids
1666 ** bug fix: threads are protected from signals and interruption when
1667 starting up or going down
1668 ** bug fix: a race where an exiting thread could lose its stack to gc
1669 ** bug fix: don't halt on infinite error in threads if possible
1670 ** fixed numerous gc deadlocks introduced in the pthread merge
1671 ** bug fix: fixed thread safety issues in read and print
1672 ** bug fix: debugger doesn't hang on session lock if interrupted at
1673 an inappropriate moment
1674 ** bug fix: run-program is now thread safe(r)
1675 ** bug fix: inner with-recursive-lock no longer releases the mutex
1676 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1677 * fixed some bugs revealed by Paul Dietz' test suite:
1678 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1679 EXPECTED-TYPE slots filled.
1680 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1682 ** MAKE-CONDITION accepts classes as type-designators.
1683 ** COMPILE may never return NIL.
1684 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1685 range before calling Unix time functions
1687 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1688 * numerous signal handling fixes to increase stability
1689 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1690 * minor incompatible change: we now correctly canonize default
1691 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1692 as per the MOP, rather than the historical (INITARG INITFUNCTION
1693 INITFORM). (reported by Bruno Haible)
1694 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1695 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1696 for more information.
1697 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1698 pathname is a directory pathname.
1699 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1700 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1702 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1703 :METACLASS argument in addition to a class name. (reported by
1704 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1705 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1706 (reported by Bruno Haible; patch from Gerd Moellmann)
1707 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1709 * bug fix: more cleanups to the floating point exception handling on
1710 x86-64 (thanks to James Knight)
1711 * bug fix: the compiler does not try to constant fold calls of
1712 COERCE and BIT-* functions when they return freshly constructed
1713 objects. (reported by Nikodemus Siivola and Paul Dietz)
1714 * optimization: improved the MIPS versions of generic (in the
1715 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1716 * optimization: direct conversion of (unsigned-byte 32) to floats on
1717 the PowerPC platform.
1718 * optimization: structure instances with raw slots now use less
1719 memory, and probably show better memory locality. (thanks to
1721 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1722 are treated as requests for stack allocation on the x86-64,
1723 Alpha-32, PPC and SPARC platforms.
1724 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1725 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1726 (thanks to Tony Martinez)
1728 ** gcing a dead thread can no longer lead to lockups
1729 ** threads block signals until they are set up properly
1730 ** errno is no longer shared by threads
1731 ** interrupt-thread restores the eflags register on x86
1732 ** fixed some lockups due to gc/thread interaction
1733 * fixed some bugs revealed by Paul Dietz' test suite:
1734 ** invalid dotted lists no longer raise a read error when
1735 *READ-SUPPRESS* is T
1736 ** signal an error if a symbol that names a declaration is used
1737 as the name of a type, or vice versa
1738 ** allow using the (declare (typespec var*)) abbreviation for
1739 (declare (type typespec var*)) with all type specifiers
1740 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1741 ** always return NIL from PPRINT-POP when OBJECT is NIL
1742 ** don't signal errors when pretty-printing malformed LABELS,
1743 FLET or MACROLET forms
1744 ** declarations in a DOLIST body are also in scope for the
1746 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1748 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1751 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1752 * fixed cross-compiler leakages that prevented building a 32-bit
1753 target with a 64-bit host compiler.
1754 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1755 opened with :IF-EXISTS :OVERWRITE.
1756 * fixed bug 281: error for an invalid qualifier in a short-form method
1757 combination method is not signalled until the faulty method is called.
1758 * bug fix: iteration variable type inferrer failed to deal with open
1759 intervals. (reported by Alan Shields)
1760 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1761 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1762 or more runtime options were provided to the sbcl binary.
1763 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1764 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1765 * optimization: there's now a fast-path for fixnum arguments in the
1766 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1767 * optimization: the code generated on x86-64 is more compact thanks
1768 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1769 * bug fix: floating-point exception handling now partly works on
1770 x86-64. (Thanks to James Knight)
1771 * improvement to the MIPS backend from Thiemo Seufer: C-style
1772 64-bit long long arguments and return values to alien functions
1774 * fixed some bugs revealed by Paul Dietz' test suite:
1775 ** the type-error signalled from WARN has a filled-in DATUM slot.
1776 ** the type-error required when a stream is not associated with
1777 a file has the stream as its datum.
1778 ** type-errors on single-floats on x86-64 no longer have
1779 :INVALID-OBJECT as the datum
1780 ** the type-errors signalled for invalid function names now have
1781 a correct expected type
1782 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1783 for structures defined with a :TYPE. Documentation strings for
1784 typed structures are no longer immediately discarded
1785 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1786 broadcast streams and synonym streams. FILE-LENGTH now also works
1787 on broadcast streams.
1789 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1790 * incompatible change: the --noprogrammer option, deprecated since
1791 version 0.7.5, has been removed. Please use the equivalent
1792 --disable-debugger option instead.
1793 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1795 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1796 inoperational for a while now) has been completely removed.
1797 * null lexical environments are now printed as #<NULL-LEXENV>,
1798 significantly reducing the amount of clutter in typical backtraces.
1799 * documentation on weak pointers, finalization, and after GC hooks
1800 has been added to the manual.
1801 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1802 as other specialized array types, is much faster. SUBSEQ and
1803 COPY-SEQ on such arrays have also been sped up.
1804 * optimization: EQL is now more efficient when at least other argument
1805 is known to be of type (OR FIXNUM (NOT NUMBER)).
1806 * fixed bug: the runtime is now less vulnerable to changes in the
1807 size of the SBCL object on OS X, and virtual memory is reserved for
1808 all spaces that need to be at a fixed address.
1809 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1810 * fixed bug: finalizers and after GC hooks that cause consing are now
1812 * fixed bug: compiler error messages and summaries are now printed to
1813 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1814 * fixed inference of the upper bound of an iteration variable.
1815 (reported by Rajat Datta).
1816 * fixed bug 211e: calling local functions with duplicated constant
1817 keyword argument no longer causes a bogus style warning about an
1819 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1820 ftype declaration to be disregarded. (reported by Dave Roberts)
1821 * fixed bug 373: caused by erronous compilation of references to alien
1822 variables in the runtime on ppc/darwin.
1823 * fixed bug 376: CONJUGATE type deriver.
1824 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1825 (reported by Baughn on #lisp)
1826 * a cross-compiler bug on non-x86 platforms has been identified and
1827 fixed. (thanks to Bruno Haible)
1828 * improvements to the MIPS runtime code for increased stability.
1829 (thanks to Thiemo Seufer)
1830 * increased the maximimum compact environment size to allow
1831 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1832 * partial workaround for bug 135: don't name the function we're
1833 calling for hairy cases of EVAL, so as not to accumulate one environment
1834 entry per call to EVAL. (reported by Kevin Reid)
1835 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1836 * optimization: type testing for non-vector arrays should be faster.
1837 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1839 * bug fix: setting 31st element of a bit vector to zero did not work
1841 * bug fix: redefining a class definition which failed due to a
1842 previous accessor / function clash now works (but see BUGS entry
1843 #380 for more problems in this area). (thanks to Zach Beane)
1844 * the long form of DEFINE-METHOD-COMBINATION disables method group
1845 checking when given a single method group with pattern *. (thanks
1847 * on x86 compiler supports stack allocation of results of simple
1848 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1849 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1850 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1851 * fixed some bugs related to Unicode integration:
1852 ** the restarts for recovering from input and output encoding
1853 errors only appear when there is in fact such an error to
1855 * fixed some bugs revealed by Paul Dietz' test suite:
1856 ** MISC.549 and similar: late transformation of unsafe type
1857 assertions into derived types caused unexpected code
1859 ** SCALE-FLOAT type deriver is less wrong.
1860 ** type derivers for EXP, LOG and similar functions compute result
1861 types for complex arguments better.
1862 ** (MISC.563) CONJUGATE type deriver works for very restricted
1864 ** out-of-line type testers for character strings are available.
1865 ** EQUAL compiler transform understands specialness of objects
1867 ** accessing double-floats stored on the stack now works on x86-64.
1868 ** debugger internals could sometimes create invalid lispobjs,
1869 resulting in GC crashes.
1870 ** MISC.548: type check weakening can convert required type into
1872 ** initialization forms for bindings are not in scope of free special
1875 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1876 * incompatible change: thread support for non-NPTL systems has
1877 been removed - locking is buggy and unreliable. A threaded
1878 SBCL build will now warn at startup and refuse to create
1879 new threads, unless futex support is detected in the kernel
1880 * incompatible change: the top level REPL now has only an ABORT
1881 restart associated with it, not TOPLEVEL and ABORT as it used to.
1882 TOP and TOPLEVEL are now available as debugger commands for
1883 returning to the top level.
1884 * incompatible change: forms evaluated in the REPL now use the
1885 global optimization policy.
1886 * incompatible change: user- and system-initialization files are
1887 no longer processed with LOAD, but by READ and EVAL; hence the
1888 global optimization policy, startup package, readtable, etc,
1890 * The .fasl file format number has been incremented because of
1891 various incompatible changes.
1892 * internal entry point details and argument counts no longer appear
1893 in backtraces unless explicitly requested by setting
1894 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1895 * built-in and standard functions no longer have names like "top
1896 level local call to FOO".
1897 * fixed bug 32: functions defined in non-null lexical environments
1898 now have more legible printed representation
1899 * fixed bug 33: functions defined in non-null lexical environemnts
1900 are now more amenable to inspection by INSPECT.
1901 * workaround for bug 354: XEPs no longer appear in backtraces unless
1902 explicitly requested.
1903 * fixed bug: receiving the signal which results from attempting to
1904 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1905 SIGBUS on other *BSDs) on architectures where the C stack is also
1906 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1907 to debugger confusion or wild instability. (reported by Cheuksan
1909 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1910 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1911 (reported by Lutz Euler)
1912 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1913 compiled code. (reported by Paul Dietz)
1914 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1915 specialized parameter to a method to something that is not TYPEP
1916 the specializer is now possible.
1917 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1918 face of package deletion.
1919 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1920 pathname. (reported by David Tolpin on c.l.l)
1921 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1922 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1923 STRING-STREAM and FILE-STREAM, respectively.
1924 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1925 than previously; in addition, its test suite is now run on build.
1926 (thanks to Luke Gorrie)
1927 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1928 * optimization: added a immediate representation for single-floats
1930 * fixed some bugs revealed by Paul Dietz' test suite:
1931 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1932 ** attempting to create a package with a colliding nickname causes
1933 correctable errors to be signalled.
1934 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1935 ** several x86-64 backend bugs related to sign-extension of immediate
1938 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1939 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1940 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1942 * fixed loading of multiply forward-referenced layouts.
1943 (thanks to Cheuksan Wang)
1944 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1945 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1946 (see COMPILE-FILE documentation for details of :PRINT option)
1947 * fixed bugs 19 and 317: fixed-format floating point printing is
1948 more accurate. This also fixes a bug reported by Adam Warner
1949 related to the ~@F format directive.
1950 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1952 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1953 dispatch table if the from-char is a dispatch macro character.
1954 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1955 by the wordsize no longer ignore the last word. (reported by Lutz
1957 * fixed bug in type checking of dynamic-extent variables. (reported
1959 * optimization: sequence traversal functions use their freedom to
1960 coerce function designators to functions.
1961 * optimization: code with many calls to CLOS methods specialized on
1962 CLOS classes has had redundant type checks removed.
1963 * optimization: added declarations to speed up operations that access
1964 the internal character database (for example STRING-UPCASE)
1965 * optimization: comparison operations between floats and sufficiently small
1966 fixnums no longer create extra rationals
1967 * fixed some bugs related to Unicode integration:
1968 ** portions of multibyte characters at the end of buffers for
1969 character-based file input are correctly transferred to the
1970 start of the buffer at the next read.
1971 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1972 passing it through to OPEN.
1973 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1974 argument given to internal calls to OPEN.
1975 ** the built-in comment readers (introduced by character sequences
1976 ";" and "#|") are more forgiving to encoding errors; they will
1977 STYLE-WARN and then attempt to resync the stream at a character
1978 boundary. (thanks to Teemu Kalvas)
1979 * fixed some bugs in the x86-64 port:
1980 ** Negative short int return values from c-calls are sign-extended
1982 ** The stack is aligned to 16-bytes for c-calls, as required by
1983 the ABI. (thanks to Cheuksan Wang)
1984 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1985 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1986 for enums. (thanks to Vincent Arkesteijn)
1987 ** Multiple small optimizations and bugfixes for floating point
1989 * fixed some bugs revealed by Paul Dietz' test suite:
1990 ** Space, Tab, Linefeed, Return and Page have the invalid
1991 secondary constituent character trait.
1992 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1994 ** WITH-INPUT-FROM-STRING should only update the index place on
1996 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1997 works more reliably.
1998 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1999 with one-dimensional arrays with fill pointers.
2000 ** TYPE-OF failed on a complex with an integer realpart and a
2002 ** compiler failure during type inference for the code of form
2003 (IF (EQL X (THE ...)) ...) (MISC.535).
2005 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2006 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2007 platform. The port supports 61-bit fixnums, large memory spaces
2008 and reloading shared object files.
2009 * enhancement: saving cores with foreign code loaded is now
2010 supported on ppc/Darwin in addition to the previously supported
2012 * enhancement: the statistical profiler now walks deeper into the
2013 call stack for more meaningful call-graphs and accrued time
2014 reports (x86/x86-64 only). It also now reports time spent in
2016 * enhancement: it is now possible to trace most individual methods
2017 of a generic function in addition to tracing the generic function
2019 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2021 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2022 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2023 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2024 produces an error. (thanks to Vincent Arkesteijn)
2025 * bug fix: NAMESTRING on pathnames with :WILD components in their
2026 directories works correctly. (thanks to Artem V. Andreev)
2027 * fixed bug 125: compiler preserves identity of closures. (reported
2029 * bug fixed: functions with &REST arguments sometimes failed with
2030 "Undefined function" when compiled with (DEBUG 3). (reported by
2032 * bug fix: overflow during compiling of setting element of a bit
2033 vector with constant index and value. (reported by Timmy Douglas)
2034 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2035 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2036 * on x86 compiler partially supports stack allocation of dynamic-extent
2038 * GO and RETURN-FROM do not check the extent of their exit points
2039 when compiled with SAFETY 0.
2040 * fixed some bugs related to Unicode integration:
2041 ** encoding and decoding errors are now much more robustly
2042 handled; it should now be possible to recover even from invalid
2043 input or output to the terminal. (thanks to Teemu Kalvas)
2044 ** provided a first cut at implementing STRING-TO-OCTETS and
2045 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2046 ** altered the SB-MD5 contributed module slightly, changing the
2047 interface just enough for it to be supportable for builds where
2048 lisp characters are not eight bits.
2049 * fixed some bugs revealed by Paul Dietz' test suite:
2050 ** the FORMATTER-generated functions for ~V[ conditionals require
2051 the correct number of arguments.
2052 ** READ-FROM-STRING returns the mandated second value when applied
2053 to displaced strings.
2054 ** the #\Rubout and #\Backspace characters are treated as invalid
2055 constituent characters by the tokenizer.
2057 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2058 * new feature: reloading changed shared object files with
2059 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2060 * new feature: references to foreign variables and functions
2061 can now be compiled and loaded before the corresponding shared
2062 object file is loaded, as long as the foreign definitions are
2063 available at runtime.
2064 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2065 supported. (thanks to Dan Debertin)
2066 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2067 just keywords. (thanks to Vincent Arkesteijn)
2068 * fixed bug #331: structure-class instances corresponding to
2069 DEFSTRUCT forms are now created eagerly.
2070 * fixed bug #345: backtraces from calls to undefined functions work
2071 on x86 as well. Related bug #61 is now also partially fixed on x86
2072 (backtraces from throws to unknown catch tags.)
2073 * bug fix: lambda-list parsing is now stricter vrt. order and number
2074 of lambda-list keywords.
2075 * bug fix: as specified by AMOP, an error is signalled if a
2076 class-option appears multiple times in a DEFCLASS form. (reported
2078 * bug fix: RANDOM can be compiled when the compiler derives the type
2079 of its numeric argument as a disjoint set of small integers.
2080 (reported by Paul Dietz)
2081 * bug fix: starting a core saved with shared objects loaded when
2082 those objects are not available no longer causes threaded SBCL to
2083 hang. (reported by Sean Ross)
2084 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2086 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2087 argument, which must always be NIL. (reported by Kalle Niemitalo)
2088 * bug fix: printing 1.0d+23 no longer results in an error.
2089 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2090 * bug fix: structure slot setters preserve evaluation order. (thanks
2092 * fixed some bugs related to Unicode integration:
2093 ** RUN-PROGRAM can allow its child to take input from a Lisp
2094 stream. (reported by Stefan Scholl)
2095 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2096 locales. (reported by Ken Causey)
2097 * fixed some bugs revealed by Paul Dietz' test suite:
2098 ** INCF, DECF and REMF evaluate their place form as specified in
2100 ** FORMATTER expands ~{ ~} iteration directives with V or #
2101 parameters correctly.
2102 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2103 consequent uses no arguments correctly.
2104 ** the system has a partial understanding of the (COMPLEX RATIO)
2106 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2109 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2110 * new feature: a build-time option (controlled by the :SB-UNICODE
2111 keyword feature, enabled by default) for building the system with
2112 support for the entire 21-bit character space defined by the
2114 * new feature: the system now has rudimentary external-format
2115 support; the primary user-visible change at this time is that
2116 characters with the high bit set (such as lower-case-e-acute) will
2117 print correctly to a terminal in a UTF-8 environment.
2118 * minor incompatible change: BASE-CHAR no longer names a class;
2119 however, CHARACTER continues to do so, as required by ANSI.
2120 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2121 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2122 has been moved to the SB-EXT package (temporarily re-exported from
2124 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2125 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2127 * fixed bug #351: better error-handlind and reporting for malformed
2129 * fixed bug #350: bignum-printing is now more memory-efficient,
2130 allowing printing of very large bignums, eg. (expt 2 10000000).
2131 (reported by Bruno Haible)
2132 * fixed bug #302: better primitive-type selection for intersection
2134 * fixed bug #308: non-graphic characters now all have names, as
2135 required. (reported by Bruno Haible)
2136 * bug fix: redefining a class with different superclasses now correctly
2137 removes it from the direct-subclasses of its previous superclasses.
2138 (reported by David Morse)
2139 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2140 new value now works. (reported by Bruno Haible)
2141 * bug fix: correct canonicalization of multiple non-standard slot
2142 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2143 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2144 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2145 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2146 now exists, an signals an error.
2147 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2148 during macroexpansion for non-iteration variables as well. (reported
2149 by Bruno Haible for CMUCL)
2150 * bug fix: Cyclic structures and unprintable objects in compiler
2151 messages no longer cause errors. (reported by Bruno Haible)
2152 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2153 and READ-FROM-STRING all now return a primary value of NIL if
2154 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2155 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2156 (reported by Bruno Haible for CMUCL)
2157 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2158 do not designate a condition. (reported by Bruno Haible for
2160 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2161 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2162 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2163 permitting resolution in favour of any of the conflicting symbols.
2164 (reported by Bruno Haible for CMUCL)
2165 * bug fix: EQUAL compiler optimizations is less aggressive on
2166 strings which can potentially compare true despite having distinct
2167 specialized array element types.
2168 * bug fix: unit enumerations can be defined without dividing by
2169 zero. (thanks to Vincent Arkesteijn)
2170 * FORMAT compile-time argument count checking has been enhanced.
2171 (report from Bruno Haible for CMUCL)
2172 * a partial workaround for the bug 262: the compiler does not try to
2173 inline-expand a local function doing RETURN-FROM from a deleted
2174 BLOCK. (thanks to Peter Denno for the bug report and to David
2175 Wragg for the simple test case)
2176 * fixed some bugs revealed by Paul Dietz' test suite:
2177 ** RENAME-PACKAGE allows all package designators as new package
2179 ** constraint propagation and lambda variable substitution are
2180 more cautious in dealing with partially deleted code.
2181 ** compiler sometimes lost reoptimization passes.
2182 ** CERROR, given a condition as condition designator, passes its
2183 remaining arguments to the continue format control without
2185 ** Case-altering FORMAT directives work correctly on non-ASCII
2187 ** The REAL type specifier handles bounds outside the floating
2188 point ranges without signalling FLOATING-POINT-OVERFLOW.
2189 ** Functions with IR1-transformations can create intercomponent
2190 references to global functions.
2191 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2193 ** FORMAT ~R treats a nil value for its first parameter correctly.
2195 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2196 * enhancement: saving cores with foreign code loaded is now
2197 supported on x86/NetBSD and sparc/Linux in addition to the previously
2198 supported platforms.
2199 * bug fix: on some platforms repeated installations caused multiple
2200 copies of HTML documentation to be installed -- should not happen
2201 any more. (reported by Stefan Scholl)
2202 * bug fix: parsing self-recursive alien record types multiple times
2203 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2204 original patch by Helmut Eller for CMUCL)
2205 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2206 (thanks to Richard Kreuter)
2207 * bug fix: defining classes whose accessors are methods on existing
2208 generic functions in other (locked) packages no longer signals
2209 bogus package lock violations. (reported by François-René Rideau)
2210 * bug fix: special variables as DEFMETHOD parameters no longer have
2211 associated bogus type declarations. (reported by David Wragg and
2213 * bug fix: read-write consistency on streams of element-type
2214 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2215 * bug fix: redefiniton of the only method of a generic function with
2216 no DEFGENERIC no longer emits a full WARNING. In addition,
2217 redefinition of generic functions with no DEFGENERIC to an
2218 incompatible lambda list now signals an error. (thanks to Zach
2220 * bug fix: DEFGENERIC now works even when there's a function of the
2221 same name in an enclosing lexical environment. (thanks to Zach
2223 * fixed compiler failure, caused by instrumenting code during
2224 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2225 * optimization: added loop analysis and improved register allocation
2226 * fixed some bugs revealed by Paul Dietz' test suite:
2227 ** POSITION on displaced vectors with non-zero displacement
2228 returns the right answer.
2229 ** (SIMPLE-STRING) is a valid type specifier for sequence
2231 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2233 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2234 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2236 ** The justification version of the FORMAT ~< directive treats
2237 non-zero minpad parameter correctly.
2239 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2240 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2241 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2242 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2243 the supported interface.
2244 * new feature: Single-stepping of code compiled with DEBUG 2 or
2245 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2246 * new feature: saving cores with foreign code loaded is now
2247 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2248 Timothy Moore's work for CMUCL)
2249 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2250 parameters to * instead of NIL if no initform is supplied.
2251 (reported by Johan Bockgaard)
2252 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2253 correctly when FUNCALL appears as the car of the form. Note:
2254 despite this FUNCALL forms are not currently subject to
2255 compiler-macro expansion. (port of Raymond Toy's fix for the
2256 same from CMUCL, reported by Johan Bockgaard)
2257 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2258 (thanks for Teemu Kalvas)
2259 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2260 case instead of terminating the iteration (thanks for Julian
2261 Squires, Sean Champ and Raymond Toy)
2262 * bug fix: incorrect expansion of defgeneric that caused a style
2263 warning. (thanks for Zach Beane)
2264 * bug fix: slot accessor effective method computation works properly
2265 for classes with multiple non-standard applicable methods on
2266 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2267 * on x86 compiler supports stack allocation of results of LIST and
2268 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2269 CMUCL implementation by Gerd Moellmann)
2270 * fixed some bugs revealed by Paul Dietz' test suite:
2271 ** FORMAT strings with both the ~<~:;~> form of the justification
2272 directive and pretty-printing directives cause an error.
2274 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2275 * incompatible change: the internal functions
2276 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2277 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2278 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2279 instead of the old functions.
2280 * new feature: on platforms where "dladdr" is available foreign
2281 function names now appear in backtraces. (based on Helmut Eller's
2283 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2284 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2286 * documentation: ASDF manual is now distributed with SBCL.
2287 * bug fix: SBCL can now load its contributed modules with REQUIRE
2288 even if the system-provided entries have been removed from
2289 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2291 * bug fix: backtraces involving undefined functions or assembly
2292 routines are more informative. (thanks to Brian Downing)
2293 * bug fix: mutually referent alien structures now work correctly.
2294 (reported by Rick Taube)
2295 * bug fix: structures defined by WITH-ALIEN can be referred to
2296 within other definitions in the same WITH-ALIEN.
2297 * bug fix: division operators (MOD, TRUNCATE and the like) with
2298 constant zero divisors and integer dividends no longer generate
2300 * bug fix: provide default methods for INPUT-STREAM-P and
2301 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2302 * bug fix: improve the detection and resolution of MOP metacycles
2303 (where effective method computation depends on the generic function
2304 having its effective method computed). (reported by Bruno Haible)
2305 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2306 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2307 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2308 * bug fix: pathnames with relative directory components can be
2309 represented relative to default pathnames.
2310 * optimization: in taking the GCD of bignums, reduce the two bignums
2311 to approximately the same size (using Euclid's algorithm) before
2312 applying the more sophisticated binary GCD. (thanks to Juho
2314 * optimization: COUNT on bitvectors now operates word-at-a-time.
2315 * optimization: ASH with a positive, but not necessarily constant,
2316 (leftwards) shift, when in a modular context, is compiled to a
2318 * fixed some bugs revealed by Paul Dietz' test suite:
2319 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2320 if the corresponding argument is NIL.
2321 ** FORMAT directives accepting a minpad parameter treat negative
2323 ** literal commas as character parameters to FORMAT directives are
2325 ** literal spaces directly after ~<Newline> directives within a
2326 format-logical-block (~:< ~@:>) do not induce :FILL-style
2327 conditional newlines.
2328 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2329 as specified: it no longer includes conditional newlines).
2330 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2332 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2333 :PER-LINE-PREFIX argument does not evaluate to a string.
2335 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2336 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2337 the manual for details; for now, package locks can be disabled by
2338 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2339 if no major problems are found then it is likely that they will be
2340 compiled in unconditionally.
2341 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2342 unsupported operators on all platforms. To load a shared library
2343 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2344 object file, link it into a shared library outside of SBCL and
2345 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2347 * bug workaround: ROOM T and the GC were not working together
2348 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2349 reporting facility aren't preserved. That reporting has been
2350 disabled, so now until and unless someone figures out how to make it
2351 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2352 * minor incompatible change: as threatened around sbcl-0.8.0, the
2353 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2354 The symbols are also exported from SB-PCL for backwards
2355 compatibility, but more so than before SB-PCL should be treated as
2356 an implementation-internal package.
2357 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2359 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2360 It is known as of this release not to work on the Alpha, however.
2361 * fixed bug #167: errors signalled due to illegal syntax in method
2362 bodies are now more legible.
2363 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2364 designators and can hence be used with TYPEP.
2365 * fixed bug #333: CHECK-TYPE now ensures that the type error
2366 signalled, if any, has the right object to be accessed by
2367 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2368 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2369 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2371 * fixed bug #334: programmatic addition of slots using specialized
2372 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2373 and :ALLOCATION :CLASS slots.
2374 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2375 float exponents. (rereported by Peter Seibel)
2376 * fixed a bug: #\Space (and other whitespace characters) are no
2377 longer considered to be macro characters in standard syntax by
2378 GET-MACRO-CHARACTER.
2379 * fixed bug: initialization of condition class metaobjects no longer
2380 causes an instance of the condition to be created. (reported by
2382 * fixed bug: it is now possible to have slots such that
2383 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2384 description is neither :INSTANCE nor :CLASS.
2385 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2386 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2387 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2388 non-standard SLOT-DEFINITION-ALLOCATION values.
2389 * fixed bugs: various race conditions handling exiting threads.
2390 CL-PPCRE's thread torture test now passes.
2391 * fixed arguably-a-bug: GC time proportional to number of threads in
2392 system even when most of them are idle
2393 * optimization: improved performance of BIT and SBIT on bit-vectors.
2394 * .fasl file incompatibility: The fasl file version number has
2395 been incremented because of changes associated with package locks.
2397 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2398 * minor incompatible change: the system no longer provides
2399 optimization hints (conditions which are TYPEP
2400 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2401 mode; these hints are still emitted when higher SPEED optimization
2403 * new contrib module: a sampling profiler (profiling by statistical
2404 sampling, rather than by instrumenting functions) is available as
2405 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2406 * the behaviour of the standard function ED is now customizeable by
2407 third parties through a hook variable: see ED's documentation
2408 string for information on the protocol.
2409 * the compiler no longer emits efficiency notes for (FUNCALL X)
2410 when the type of X is uncertain under default optimization
2412 * fixed bug 276: mutating a binding of a specialized parameter to a
2413 method to something that is not TYPEP the specializer is now
2415 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2416 exhibit the required behaviour on the x86 platform. (thanks to
2417 Peter van Eynde, Eric Marsden and Bruno Haible)
2418 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2419 even for difficult arguments. (reported by Peter Graves)
2420 * fixed bug 141a: the backquote printer now descends quoted
2422 * fixed another bug in backquote printing: no more destructive
2423 modification of the form's list structure. (reported by Brian
2425 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2426 move between its address being taken and the call to
2427 interrupt_thread, fixing a crashing race condition.
2428 * the SB-POSIX contrib implementation has been adjusted so that it
2429 no longer exhibits ridiculously poor performance when constructing
2430 instances corresponding to C structs.
2432 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2433 * minor incompatible change: the sb-grovel contrib now treats C
2434 structures as alien (in the sense of SB-ALIEN) objects rather than
2435 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2436 has implications for memory management of client code
2437 (sb-grovel-returned objects must now be manually managed) and for
2438 type safety (alien objects now have full types).
2439 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2440 used to control emission of compiler diagnostics, rather than the
2441 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2442 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2443 quality should be considered deprecated.
2444 * install.sh now installs the user manual as well
2445 * (not quite a new documentable feature, but worth considering in
2446 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2447 beginnings of a semantically meaningful condition hierarchy is
2448 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2450 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2451 designator as the defaults argument.
2452 * fixed bug: Displaced arrays whose displaced-to array has become
2453 too small now cause ARRAY-DIMENSION to signal an error, providing
2454 for safer bounds-checking. (reported by Bruno Haible)
2455 * fixed bug: DEFCLASS slot definitions with identical :READER and
2456 :WRITER names now signal a reasonable error. (reported by Thomas
2458 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2460 * fixed bug: Invalid slot specification errors now print correctly.
2461 (thanks to Zach Beane)
2462 * fixed bug 320: Shared to local slot value transfers in class
2463 redefinitions now happen corrently from superclasses as
2464 well. (reported by Bruno Haible)
2465 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2467 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2468 improper lists correctly. (reported by Bruno Haible)
2469 * fixed bug 313: source-transform for <fun-name> was erroneously
2470 applied to a call of a value of a variable with name <fun-name>.
2471 (reported by Antonio Menezes Leitao)
2472 * fixed bug 307: The obsolete instance protocol ensures that
2473 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2474 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2475 remove dead unknown-values globs from the middle of the stack.
2476 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2477 easier to resume long computations after using *BREAK-ON-SIGNALS*
2478 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2479 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2480 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2481 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2482 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2483 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2485 * fixed a (fairly theoretical) bug in string printing: if
2486 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2487 does not have array-element-type equal to the most general string
2489 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2490 function name. (thanks to Nikodemus Siivola)
2491 * fixed bug: compile-time format string checker failed on
2492 non-closed ~{. (reported by Thomas F Burdick)
2493 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2494 don't warn on legal loop code involving more than one aggregate
2495 boolean. (thanks to Nikodemus Siivola)
2496 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2497 in keyword position to MAKE-PACKAGE was not being reported as
2499 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2500 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2502 * fixed bugs 280 and 312: the checking for multiple definitions in a
2503 file is less likely to become confused by uses of inline
2505 * fixed bug: the #S reader macro performs the keyword coercion
2506 specified for slot names. (reported by Kalle Niemitalo)
2507 * fixed bug: lambda lists may contain symbols whose names start with
2508 & but are not lambda-list-keywords; their occurrence triggers a
2510 * fixed bug 321: define-method-combination argument lambda lists do
2511 not cause invalid code to be generated when &optional or &aux
2512 variables have default values. (reported by Bruno Haible)
2513 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2514 have CLOS classes; this appears also to have fixed reported
2515 instability in stack exhaustion detection.
2516 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2517 MUFFLE-WARNING when no associated restart is present is now
2519 * optimization: rearranged the expansion of various defining macros
2520 so that each expands into only one top-level form in a
2521 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2523 * optimization: used a previously little-used slot in symbols to
2524 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2526 * fixed some bugs revealed by Paul Dietz' test suite:
2527 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2529 ** Fixed an optimization bug related to inheritance of initforms
2530 from local to shared slots.
2531 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2532 ** CAST optimizer forgot to flush argument derived type.
2533 ** print/read consistency on floats is now orders of magnitude
2534 more likely. (thanks also to Bruno Haible for a similar report
2536 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2537 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2538 for objects of type REAL. Make it so.
2539 ** SXHASH is specified (infelicitously) to respect similarity,
2540 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2541 it so. (thanks to Markus Ziegler)
2542 ** on the Alpha, the compiler succeeds in compiling functions
2543 returning a known number of arguments greater than 63.
2544 ** fixed handling of invalid NIL arguments in keyword position
2546 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2548 ** provided a readably-printable representation for RANDOM-STATE
2550 ** ensured that pathnames, where they have a namestring, always
2551 print using #P"..." syntax.
2553 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2554 * Support for the forthcoming 2.0 version of the NetBSD kernel
2555 running on x86 hardware has been added. (thanks to Perry
2556 E. Metzger most immediately, and others for their past work)
2557 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2558 current release version; SBCL's OpenBSD support had been broken
2559 since about the time of OpenBSD's switch to ELF binary format.)
2560 * [placeholder for DX summary]
2561 ** user code with &REST lists declared dynamic-extent, under high
2562 speed or space and low safety and debug optimization policy.
2563 * The manual has been converted to Texinfo format and the debugger
2564 chapter from the cmucl manual has been added.
2565 * A facility has been added to extract documentation strings from
2566 sbcl and store them as Texinfo-formatted snippets for inclusion in
2567 the manual (via Texinfo's @include directive)
2568 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2569 the test case to Dave Roberts)
2570 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2571 pointers. (reported by Sean Ross)
2572 * bug fix: PROFILE output is printed nicely even for large numerical
2573 values. (thanks to Zach Beane)
2574 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2575 greater than 32 handle EOF correctly.
2576 * bug fix: on X86 an immediate argument of the IMUL instruction is
2577 correctly printed in disassembly. (thanks to Lutz Euler)
2578 * bug fix: class slots in redefined classes preserve their old
2579 values. (thanks to Bruno Haible and Nikodemus Siivola)
2580 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2581 succeeds. (reported by Marco Baringer)
2582 * fixed some bugs revealed by Paul Dietz' test suite:
2583 ** READ-SEQUENCE now works on ECHO-STREAMs.
2584 ** RATIONALIZE works more according to its specification. (thanks
2587 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2588 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2589 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2590 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2591 should matter to you only if you rebind the printer control
2592 variables and then find you want different bindings in the
2593 debugger than in the ordinary execution of your program.)
2594 * The runtime build system has been tweaked to support building
2595 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2596 assembler and linker. (thanks to Nikodemus Siivola)
2597 * Unbound, undefined, undeclared variables now trigger full
2598 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2599 more often programmer error than deliberate exploitation of undefined
2601 * optimization: the hash algorithm for strings has changed to one
2602 that is less vulnerable to spurious collisions. (thanks to Juho
2604 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2605 needless bounds checking. (thanks to Juho Snellman)
2606 * optimization: implemented multiplication as a modular
2607 (UNSIGNED-BYTE 32) operation on the PPC backend.
2608 * fixed some bugs revealed by Paul Dietz' test suite:
2609 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2611 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2612 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2613 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2615 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2617 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2619 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2620 their output stream on EOF from read.
2621 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2622 have been read to end-of-file.
2623 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2625 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2626 description of determination of which consecutive characters
2628 ** Printing the "Space" character with escaping on now yields "#\\ ",
2629 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2630 ** Reading floating-point numbers with *READ-BASE* set to a number
2631 less than 10 works correctly.
2632 ** Reading floating-point numbers with *READ-BASE* set to a number
2633 more than 10 works correctly.
2634 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2635 the readtable currently in effect.
2637 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2638 * minor incompatible change: parsing of namestrings on a physical
2639 (Unix) host has changed; numbers after the final #\. in a
2640 namestring are no longer interpreted as a version field. This is
2641 intented to be largely invisible to the user, except that the
2642 meaning of the namestring "*.*.*" has changed: it now refers to a
2643 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2644 should usually be replaced by
2645 (make-pathname :name :wild :type :wild :version :wild)
2646 with the added benefit that this is more likely to be portable.
2647 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2648 option to OPEN now signals an error if the file being opened
2649 exists; this may have an impact on existing code.
2650 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2651 signals received, on the PowerPC platforms (both Linux and
2652 Darwin). (thanks to Pierre Mai for pointing out the location of
2654 * several fixes on OS X: The system now builds and runs cleanly on
2655 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2656 (thanks to Brian Mastenbrook)
2657 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2658 second-resolution: integer multiples of 1/3600 between -24 and 24.
2659 (thanks to Vincent Arkesteijn)
2660 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2661 type when called with 1 argument; PEEK-CHAR checked type of
2662 PEEK-TYPE only after having read first character from a
2663 stream. (reported by Peter Graves)
2664 * bug fix: the garbage collector now has much better locality
2665 behaviour, and in particular no longer treats all memory as being
2666 exhausted when many small objects point to each other in a deeply
2668 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2669 recognized as being TYPEP their class.
2670 * bug fix: the PUSHNEW documentation string has been corrected.
2671 (thanks to Vincent Arkesteijn)
2672 * bug fix: defaulting of the value for the last of an atypically
2673 large number of multiple values being bound was not being
2674 performed correctly on the Alpha or PPC platforms
2675 * optimization: implemented multiplication as a modular
2676 (UNSIGNED-BYTE 32) operation on the x86 backend.
2677 * optimization: SEARCH on simple-base-strings can now be open-coded.
2678 (see also contrib/compiler-extras.lisp for inspiration for
2679 teaching the compiler about the Boyer-Moore algorithm).
2680 * value, returned by MAX (and MIN) called with several EQUALP, but
2681 not EQL, arguments now does not depend on compiler settings.
2682 * fixed some bugs revealed by Paul Dietz' test suite:
2683 ** in stack analysis liveness information is propagated from
2684 non-local entry points.
2685 ** pathwise CAST removing failed when the CAST node did not start
2687 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2688 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2690 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2691 host is already defined.
2692 ** RENAME-FILE works on streams instead of signalling an internal
2694 ** PEEK-CHAR uses the current readtable when determining whether
2695 or not a character is whitespace.
2696 ** MERGE-PATHNAMES handles the case when the pathname does not
2697 specify a name while the default-pathname specifies a version.
2698 ** Pathnames now stand a better chance of respecting print/read
2700 ** Attempting to use standardized file system operators with a
2701 pathname with invalid :DIRECTORY components signals a
2703 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2705 ** DIRECTORY on logical pathnames is more correct.
2706 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2707 signal a TYPE-ERROR if their argument is not a stream.
2708 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2709 designator argument does not designate a stream.
2710 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2711 examining the synonym.
2712 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2714 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2715 element-type larger than ([UN]SIGNED-BYTE 32).
2717 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2718 * When built with the :SB-FUTEX feature, threaded builds now take
2719 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2720 for faster/more reliable mutex and condition variable support.
2721 * Incompatible change (but one you probably shouldn't have been using
2722 anyway): the interface and code for arbitrating between multiple
2723 threads in the same user session has been redesigned.
2724 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2725 error when called without an explicit environment argument.
2726 (thanks to Nikodemus Siivola)
2727 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2728 confused about their position. (thanks to Adam Warner and Gerd
2730 * bug fix: Pretty printing backquoted forms with unquotations in the
2731 argument list position of various code constructs such as LAMBDA
2732 now works correctly. (reported by Paul Dietz)
2733 * bug fix: Pretty printing unquotations no longer loses all
2734 stream position information.
2735 * optimization: performance of string output streams is now less
2736 poor for multiple small sequence writes.
2737 * optimization: performance of CSUBTYPEP in the presence of complex
2738 expressions involving CONS and NOT many times has been improved.
2739 (reported by Paul Dietz)
2740 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2742 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2743 streams for the REPL, for the debugger, and so on. (thanks to
2745 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2746 * fixed some bugs revealed by Paul Dietz' test suite:
2747 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2748 is ignored if it is too small, rather than propagating through
2749 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2750 ** extremely complex negations of CONS types were not being
2751 sufficiently canonicalized, leading to inconsistencies in
2753 ** VALUES tranformer lost derived type.
2755 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2756 * fixed a bootstrapping bug: the build process no longer assumes
2757 that the various BOOLE-related constants have the same value in
2758 host and target lisps. (noted by Paul Dietz' test suite on an
2759 SBCL binary built from CLISP)
2760 * The system can now be dynamically linked on the MIPS platform,
2761 which enables dynamic loading of foreign code from Lisp. (thanks
2762 to Ralf Baechle for discussions on the MIPS ABI)
2763 * The system now records debugging information for its own source
2764 files in a filesystem-position-independent manner, relative to
2765 the "SYS" logical host.
2766 * fixed a compiler bug: MV-LET convertion did not check references
2767 to the "max args" entry point. (reported by Brian Downing)
2768 * tweaked disassembly notes to be less confident about proclaiming
2769 some instruction as an LRA. (thanks to Brian Downing)
2770 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2771 now each have their own history, command character, and other
2772 characteristics. (thanks to David Lichteblau)
2773 * fixed some bugs revealed by Paul Dietz' test suite:
2774 ** compiler failure in compiling LOGAND expressions including a
2776 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2777 shift greater than 32.
2778 ** FLUSH-DEST did not mark blocks for type check regeneration.
2779 ** HANDLER-CASE failed to accept declarations in handler clauses
2780 in some circumstances.
2782 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2783 * New code in contrib/sb-introspect (still probably not entirely
2784 stable yet) provides some support for smart Lisp development
2785 environments like SLIME.
2786 * The conditions signalled for errors occurring when loading .fasl
2787 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2788 in a way which should help ASDF recover gracefully.
2789 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2790 stuff has been cleaned up. If you code contrib/ stuff, this might
2791 affect you, and you can look at contrib/README, contrib/STANDARDS,
2792 and/or the 0.8.4.27 diff to check.
2793 * In full calls the compiler now does not generate checks for declared
2794 argument types for all arguments.
2795 * various threading fixes
2796 ** and some experimental patches which didn't make it into
2797 the main tree for this release, but which are shipped in
2798 contrib/experimental-thread.patch as a possible fix for some
2799 failures (deadlock, spinning...) in GC-intensive multithreaded
2801 * fixed PPC build problem (source code incompatibility of different
2802 library versions): added offsetof() hackery which attempts to divine
2803 where glibc maintainers put uc_mcontext today
2804 * fixed bug 282: compiler does not trust type assertions while passing
2805 arguments to a full call.
2806 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2807 &OPTIONAL VALUES type parameter.
2808 * fix bug 214: algorithm for noting rejected templates is now more
2809 similar to that of template seletion. (also reported by rydis on
2811 * fixed bug 141b: printing backquoted information readably and prettily
2812 inserts a space where necessary.
2813 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2814 (CHARACTER 10) are now reported as errors, rather than propagated
2815 as unknown types. (reported by piso on #lisp)
2816 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2817 with values NIL and :ERROR. (thanks to Milan Zamazal)
2818 * fixed bug 191c: CLOS now does proper keyword argument checking as
2819 described in CLHS 7.6.5 and 7.6.5.1.
2820 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2821 longer raise an error; further, using a list as a for-as-arithmetic
2822 counter now raises a meaningful error.
2823 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2824 now understood by sequence creation functions such as MAKE-SEQUENCE
2826 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2827 a STRING-INPUT-STREAM.
2828 * compiler enhancement: SIGNUM is now better able to derive the type
2830 * type declarations inside WITH-SLOTS are checked. (reported by
2832 * fixed some bugs revealed by Paul Dietz' test suite:
2833 ** incorrect optimization of TRUNCATE for a positive first
2834 argument and negative second.
2835 ** compiler failure in let-convertion during flushing dead code.
2836 ** compiler failure while deriving type of TRUNCATE on an
2837 interval, containing 0.
2838 ** ASH of a negative bignum by a negative bignum count now returns
2840 ** intersection of CONS types now canonicalizes properly, fixing
2841 inconsistencies in SUBTYPEP.
2843 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2844 * incompatible change: The --disable-debugger command line
2845 option now clobbers the debugger at a more fundamental
2846 level, by redefining #'INVOKE-DEBUGGER instead of by
2847 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2848 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2849 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2850 enter the debugger REPL and then suffer recursive errors
2851 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2852 while under the new system, BREAK in --disable-debugger mode
2853 terminates the system just as an unhandled error would.
2854 * fixed compiler performance when processing loops with a step >1;
2855 * bug fix: DOCUMENTATION now retrieves generic function
2856 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2857 support has been systematized, and now supports the methods
2858 specified by ANSI, along with a default method and a method for
2859 slot documentation. (reported by Nathan Froyd)
2860 * bug fix: effective methods associated with a generic function are
2861 no longer cached over a change of that generic function's method
2862 combination. (reported by Andreas Fuchs)
2863 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2864 names a non-existent directory. (thanks to Andreas Fuchs)
2865 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2866 the PPC platform, lead to stack corruption; this has been fixed.
2867 (reported by Rainer Joswig)
2868 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2869 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2870 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2871 arithmetic in general, is now much more reliable on the PPC
2873 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2874 platform now returns the right answer.
2875 * optimization: restored some effective method precomputation in
2876 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2877 precomputation is now tunable.
2878 * optimization: compiler-internal data structure use has been
2879 reviewed, and changes have been made that should improve the
2880 performance of the compiler by about 20%.
2881 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2882 simple-base-strings and simple-bit-vectors is improved.
2883 * optimization: the optimization of 32-bit logical and arithmetic
2884 functions introduced in version 0.8.3 on the x86 has been
2885 implemented on the mips, ppc and sparc platforms; an
2886 implementation of the same facility, but for 64-bit arithmetic,
2887 has been added for the alpha.
2888 * microoptimization: the compiler is better able to make use of the
2889 x86 LEA instruction for multiplication by constants.
2890 * bug fix: in some situations compiler did not report usage of
2891 generic arithmetic in (SPEED 3) policy.
2892 * bug 145b fix: compiler used wrong type specifier while converting
2893 MEMBER-types to numeric.
2894 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2896 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2897 index argument now works properly on the Alpha platform.
2898 * bug fix: floating point exception treatment on the Alpha platform
2900 * bug fix: FILE-POSITION works much better on string input and
2901 output streams. (thanks to Nikodemus Siivola)
2902 * bug fix: many threading/garbage collection symptoms sorted.
2903 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2904 might be pseudo-atomic.
2905 * internal change: Stopping for GC is now done with signals not
2906 ptrace. GC is now done in whichever thread wanted it, instead of
2908 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2910 * bug fix: result form in DO is not contained in the implicit
2912 * incompatible change: ICR structure is changed; the value part of
2913 CONTINUATION is now called LVAR; corresponding functions are
2914 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2915 * added type deriver for ISQRT (thanks to Robert E. Brown).
2916 * bug fix: better support for loading from the command line when an
2917 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2919 * fixed some bugs revealed by Paul Dietz' test suite:
2920 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2921 ** ROUND and FROUND now give the right answer when given very
2922 small float arguments.
2923 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2925 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2926 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2927 ** LCM should return a non-negative integer.
2928 ** PARSE-INTEGER returned the index of a terminator instead of the
2929 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2930 ** PARSE-INTEGER returned an incorrect index being applied to a
2932 ** LCM with two arguments of 0 returns 0 rather than signalling
2934 ** unsigned addition of a 32-bit constant with the high bit set no
2935 longer causes an internal compiler error on the x86.
2936 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2937 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2938 with negative last argument.
2939 ** byte specifiers with zero size and position no longer cause
2940 an error during type derivation.
2941 ** bignum multiplication on the Alpha platform now returns the
2943 * porting: The system now builds on SuSE AMD64, although it still
2944 generates a 32-bit binary.
2945 * .fasl file incompatibility: The fasl file version number has
2946 been incremented (because of the changes to internal compiler
2947 data structures referred to above).
2949 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2950 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2951 more accurately, on the Darwin kernel running on PowerPC hardware.
2952 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2953 * Compiler code deletion notes now signal a condition of type
2954 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2955 an associated MUFFLE-WARNING restart.
2956 * The compiler now performs limited argument count validation of
2957 constant format strings in FORMAT, and where appropriate in ERROR,
2958 CERROR and WARN. (thanks to Gerd Moellmann)
2959 * New ASDF-INSTALL contrib can be used for automatic download and
2960 installation of third-party Lisp code from CCLAN or other sites
2962 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2963 which forces another thread to execute a function supplied by the
2965 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2966 now accept and act upon their :ELEMENT-TYPE keyword argument.
2967 (reported by Martin Atzmueller, Edi Weitz)
2968 * bug fix: FILE-POSITION now accepts position designators up to
2969 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2970 is the greater. (thanks to Patrik Nordebo)
2971 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2972 Kalle Olavi Niemitalo)
2973 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2974 printable. (reported by Eric Marsden)
2975 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2976 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2977 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2978 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2979 (thanks to Stig Sandoe)
2980 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2981 UNREAD-CHAR now correctly includes the unread character in the
2982 target sequence. (thanks to Gerd Moellmann)
2983 * bug fix in threaded builds: the system can now be suspended and
2984 resumed by shell job control with minimal disruption.
2985 * bug fixes in times and timezones >2038AD
2986 * better handling of "where is GNU make?" problem in build scripts
2987 (thanks to Nikodemus Siivola)
2988 * new optimization: inside a named function any reference to a
2989 function with the same name is considered to be a self-reference;
2990 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2991 optimization quality.
2992 * new optimization on x86: logical functions and + now have
2993 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2994 used when the result is truncated to 32 bits.
2995 * VALUES declaration is partially enabled.
2996 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2997 * fixed some bugs revealed by Paul Dietz' test suite:
2998 ** The system now obeys the constraint imposed by
2999 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3000 types form a lattice under type intersection.
3001 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3002 ** ASSOC now ignores NIL elements in an alist.
3003 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3004 and (1+ MOST-POSITIVE-FIXNUM) answers.
3005 ** The addition of a method with invalid qualifiers to a generic
3006 function does not cause an error to be signalled immediately;
3007 a warning is signalled, and the error is generated only on
3008 calling the generic function.
3009 * changed .fasl file version number, in part to add type codes for
3010 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3011 obscure ANSI requirements
3013 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3014 * fixed bug 148: failure to inline-expand a local function left
3015 garbage, confusing the compiler.
3016 * fixed bugs 3cd: structure slot readers perform type check if the
3017 slot can have an invalid value (i.e. it is either not initialized
3018 or can be written with a less specific slot writer).
3019 * bug fix: the compiler now traps array references to elements off
3020 the end of an array; previously, the bounds checking in some
3021 circumstances could go off-by-one.
3022 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3024 * type declarations for array element types now obey the description
3025 on the CLHS page "Declaration TYPE", as per discussions on
3026 sbcl-help around 2003-05-08. This means that a declaration
3027 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3028 declaration, all references to BAR will be asserted or assumed
3029 (with THE, so dependent on compiler policy) to involve objects of
3030 type FOO. Note that no such declaration is implied in
3031 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3032 * declared types of functions from the "Conditions"
3033 chapter. (reported by Paul Dietz)
3034 * bug fix: CERROR accepts a function as its first argument.
3035 * bug fix: NTH an NTHCDR accept a bignum as index
3036 arguments. (reported by Adam Warner)
3037 * optimization: character compare routines now optimize comparing
3038 against a constant character. (reported by Gilbert Baumann)
3039 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3040 argument now works properly on the MIPS platform.
3041 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3042 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3043 declared to have a functional type, does not cause an error
3045 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3046 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3047 * fixed bug: if last continuation of a deleted block has a
3048 destination, this destination should be deleted too. (reported by
3050 * fixed a bug in the bootstrap process: the host compiler's values
3051 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3052 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3053 test case from Patrik Nordebo)
3054 * improved the ability of the disassembler on the PPC platform to
3055 provide helpful disassembly notes.
3056 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3057 the class in more cases than previously.
3058 * bug fix: FILE-POSITION now understands :START and :END for
3059 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3060 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3061 8) data. (thanks to David Lichteblau)
3062 * bug fix: it is possible to add a method to a generic function
3063 without lambda list.
3064 * bug fix: reader failed to signal END-OF-FILE inside an
3065 object representation. (reported by Nikodemus Siivola)
3066 * fixed some bugs revealed by Paul Dietz' test suite:
3067 ** LAST and [N]BUTLAST should accept a bignum.
3068 ** condition slot accessors are methods.
3069 ** (VECTOR NIL) is a subtype of STRING.
3071 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3072 * minor incompatible change: some nonsensical specialized lambda
3073 lists (used in DEFMETHOD) which were previously ignored now signal
3075 * minor incompatible change: the system is now aware of the types of
3076 variables in the COMMON-LISP package, and will signal errors for
3077 most violations of these type constraints (where previously they
3078 were silently accepted).
3079 * minor incompatible change: COMPILE-FILE now uses the freedom
3080 afforded (ANSI 3.2.2.3) to use derived function types for
3081 functions defined in the same file. This also permits the system
3082 to warn on static type mismatches and function
3083 redefinition. (Currently it does not work with high DEBUG level.)
3084 * minor incompatible change: VALUES declaration is disabled.
3085 * When issuing notes, the compiler now signals a condition of type
3086 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3087 restart for use in user handlers. It is expected that the
3088 COMPILER-NOTE condition will eventually become a condition
3089 supertype to a hierarchy of note types, which will then be
3090 handleable in a similar fashion. However, at the moment, no such
3091 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3092 but it's an implementation detail, not a classification for the
3094 * Changes in type checking closed the following bugs:
3095 ** type checking of unused values (192b, 194d, 203);
3096 ** template selection based on unsafe type assertions (192c, 236);
3097 ** type checking in branches (194bc).
3098 * A short form of VALUES type specifier has ANSI meaning (it has
3099 increased the number of situations when SBCL cannot perform type
3101 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3102 keywords or constants is permissible.
3103 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3104 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3105 classes. (thanks to Antonio Martinez)
3106 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3107 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3108 argument to a pretty-print stream. Instead, it leaves any such
3109 operations to DESCRIBE-OBJECT methods.
3110 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3112 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3113 lambda lists. (thanks to David Lichteblau)
3114 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3115 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3116 (thanks to Gerd Moellmann)
3117 * fixed bug 246: increased compilation speed of long
3118 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3120 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3122 * DEFCONSTANT now throws a condition of type
3123 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3124 constant to a non-EQL value; CONTINUE and ABORT restarts
3125 respectively change and preserve the value.
3126 * fixed bug 63: The code walker, part of the implementation of CLOS,
3127 is now better at handling symbol macros.
3128 * bug fix: There is no longer an internal implementation type named
3129 CL:LENGTH. (reported by Raymond Toy)
3130 * bug fix: In macro-like defining macros/special operators the
3131 implicit block does not enclose the lambda list.
3132 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3133 enclosed in parentheses) are not suitable as type specifiers, and
3134 their use properly signals an error now.
3135 * bug fix: An argument count mismatch for a type specifier in code
3136 being compiled no longer causes an unhandled error at compile
3137 time, but signals a compile-time warning.
3138 * fixed simple vector readable printing
3139 * bug fix: DESCRIBE takes more care over whether the class
3140 precedence list slot of a class is bound before accessing it.
3141 (reported by Markus Krummenacker)
3142 * bug fix: FORMATTER can successfully compile pretty-printer format
3143 strings which use variants of the ~* directive inside.
3144 * bug fix: SEARCH now applies its TEST predicate to the elements of
3145 the arguments in the correct order. (thanks to Wolfhard Buss)
3146 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3147 in type inference. (thanks to Robert E. Brown)
3148 * bug fix: Reading in symbols with an explicit package name of ""
3149 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3150 * fixed some bugs revealed by Paul Dietz' test suite:
3151 ** NIL is now allowed as a structure slot name.
3152 ** Arbitrary numbers, not just REALs, are allowed in certain
3153 circumstances in LOOP for-as-arithmetic clauses.
3154 ** Multiple class redefinitions before slot access no longer
3155 causes a type error.
3156 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3157 association between the name and a class.
3158 ** Generic functions with non-standard method-combination and over
3159 five methods all of which return constants no longer return NIL
3160 after the first few invocations. (thanks to Gerd Moellmann)
3161 ** CALL-NEXT-METHOD with no arguments now passes the original
3162 values of the arguments, even in the presence of assignment.
3163 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3165 ** DISASSEMBLE works with closures and funcallable instances.
3166 ** ADD-METHOD now returns the generic function, not the new method.
3167 ** FIND-METHOD signals an error if the lengths of the specializers
3168 is incompatible with the generic function, even if the ERRORP
3170 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3171 which its argument is a member.
3172 ** DEFCLASS only redefines the class named by its class-name
3173 argument if that name is the proper name of the class;
3174 otherwise, it creates a new class.
3175 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3176 of the UNBOUND-SLOT condition to the name of the slot.
3177 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3178 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3179 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3180 SLOT-MAKUNBOUND in the specified fashion.
3182 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3183 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3184 cross-compilation host. As a consequence, we can now bootstrap our
3185 way up to SBCL starting with a bare gcc toolchain and human-readable
3186 source code (first the source to CLISP, then the source to SBCL).
3187 * A contributed module containing a partial implementation of the
3188 simple-streams interface has been included. (thanks to Rudi
3190 * A contributed module implementing the RFC1321 Message Digest
3191 Algorithm, known as MD5, has been included.
3192 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3193 no longer has any effect, as the code controlled by this feature
3194 has been deleted. (As far as we know, no-one has ever built using
3195 this feature, and its semantics were confused in any case).
3196 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3197 work on conditions (as required by the ANSI specification),
3198 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3199 expected behaviour on conditions. Users should note, however,
3200 that such behaviour is not required by the ANSI specification,
3201 and so use of this behaviour may render their code unportable.
3202 * fixed some bugs revealed by Paul Dietz' test suite:
3203 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3205 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3206 ** SXHASH on condition objects no longer returns NIL.
3207 ** :ALLOCATION :CLASS slots are better treated; their values are
3208 updated on class redefinition, and initforms inherited from
3209 superclasses are applied.
3210 ** REMOVE-METHOD returns its generic function argument even when
3211 no method was removed.
3212 ** SHARED-INITIALIZE now initializes the values of the requested
3213 slots, including those with :ALLOCATION :CLASS.
3214 ** ALLOCATE-INSTANCE now works on structure classes defined via
3215 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3217 ** SLOT-EXISTS-P now works on conditions, as well as structures
3219 ** MAKE-LOAD-FORM now has the required methods on
3220 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3221 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3222 keyword, and now implements the SLOT-NAMES argument.
3223 ** methods with &OPTIONAL arguments no longer allow too many
3224 arguments to be passed in the call without error.
3225 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3226 option is consistent with the required arguments of the generic
3227 function lambda list.
3228 * bug fix: REQUIRE accepts a string designator. (Thanks to
3230 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3231 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3232 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3233 * bug fix: The compiler now checks for duplicated variables in macro
3235 * bug fix: SETQ on globals returns the correct value.
3236 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3237 not a COMPILER-ERROR (followed by some other strange error on
3238 choosing the CONTINUE restart).
3239 * bug fix: make.sh and friends are now more consistent in the way that
3240 they look for GNU "make".
3242 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3243 * experimental native threads support (on x86 Linux >=2.4 only).
3244 This is not compiled in by default: you need to add :SB-THREAD to
3245 the target features. See the "Beyond ANSI" chapter of the manual
3247 * fix for longstanding nonANSIism: The old distinction between
3248 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3249 The return value from CL:FIND-CLASS is now a CLOS class, and
3250 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3251 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3252 * An interface to the MetaObject Protocol, as described in Kiczales,
3253 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3254 MIT Press, 1991, is available from the SB-MOP package.
3255 * incompatible change: the SB-PCL package should now be considered
3256 a private implementation detail, and no longer a semi-private MOP
3258 * minor incompatible change: due to rearrangement for threads, the
3259 control stack and binding stack are now allocated at arbitrary
3260 addresses instead of being hardcoded per-port. Users affected by
3261 this probably have to be doing advanced things with shared
3262 libraries, and will know who they are.
3263 * minor incompatible change: Previously, all --eval forms used were
3264 processed with READ before any of them were processed with EVAL.
3265 Now each --eval form is processed with both READ and EVAL before
3266 the next --eval form is processed. (Thus package operations like
3267 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3268 work as the user might reasonably expect.)
3269 * minor incompatible change: *STANDARD-INPUT* is now only an
3270 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3272 * minor incompatible change: Y-OR-N-P is now character-oriented,
3273 not line oriented. Also, YES-OR-NO-P now works without errors.
3274 (thanks to Antonio Martinez)
3275 * sb-aclrepl module improvements: an integrated inspector, added
3276 repl features, and a bug fix to :trace command.
3277 * Known functions, which cannot be open coded by the backend, are
3278 considered to be able to check types of their arguments. (fixing
3279 a bug report by Nathan J. Froyd)
3280 * fixed a bug in computing method discriminating functions: It is
3281 now possible to define methods specialized on classes which have
3282 forward-referenced superclasses. (thanks to Gerd Moellmann)
3283 * fixed evaluation order in optional entries (reported by Gilbert
3285 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3286 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3287 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3288 required-by-AMOP NAME argument, as well as CLASS and
3289 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3290 * fixed bug 20: DEFMETHOD can define methods using names that are
3291 not the proper names of classes to designate class specializers.
3292 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3293 Unix file descriptors, instead of blowing up. (thanks to Antonio
3295 * Garbage collection refactoring: user-visible change is that a
3296 call to the GC function during WITHOUT-GCING will not do garbage
3297 collection until the end of the WITHOUT-GCING. If you were doing
3298 this you were probably losing anyway.
3299 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3300 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3301 TYPEP the latter but not the former.
3302 * The compiler issues a full WARNING for calls to undefined functions
3303 with names from the CL package.
3304 * MAP-INTO for a vector destination is open coded. (reported by
3305 Brian Downing on c.l.l)
3306 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3307 documentation string.
3308 * fixed some bugs revealed by Paul Dietz' test suite:
3309 ** COPY-ALIST now signals an error if its argument is a dotted
3311 ** Condition slots are now accessed more correctly in the presence
3312 of multiple initargs for a given slot.
3313 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3314 exclude restarts of the same name associated with a different
3316 ** DEFCLASS of forward-referenced classes with another
3317 forward-referenced class in the superclasses list no longer
3319 ** Condition slots are now initialized once each, not multiple
3320 times. (thanks to Gerd Moellmann)
3321 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3323 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3324 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3325 arguments contain duplicated elements.
3326 ** RESTART-CASE understands local macros.
3327 ** RESTART-CASE associates exactly its own restarts with a condition.
3328 ** ENDP in safe mode checks its argument to be of type LIST.
3329 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3330 in question is unbound.
3331 ** Optimized MAKE-INSTANCE functions no longer cause internal
3332 assertion failures in the presence of duplicate initargs.
3333 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3334 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3335 propagated even in the ctor optimized implementation of
3337 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3339 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3340 * a better implementation of SXHASH on (simple) bit vectors,
3341 measured both in execution speed and in distribution of results
3342 over the positive fixnums, has been installed. Likewise, a better
3343 implementation of EQUAL for simple bit vectors is now available.
3344 * fixed CEILING optimization for a divisor of form 2^k.
3345 * fixed bug 240 (emitting extra style warnings "using the lexical
3346 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3347 by Antonio Martinez)
3348 * fixed SXHASH, giving different results for NIL depending on type
3349 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3350 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3351 variable. (found by Rolf Wester)
3352 * SBCL does not ignore type declarations for special
3353 variables. (reported by rif on c.l.l 2003-03-05)
3354 * some bug fixes in contrib/sb-aclrepl/
3355 * fixed some bugs revealed by Paul Dietz' test suite:
3356 ** a bug in the CONS type specifier, whereby the CAR and CDR
3357 types got intertwined, has been fixed;
3358 ** the type system is now able to reason about the interaction
3359 between INTEGER and RATIO types more completely;
3360 ** APPEND, [N]REVERSE and NRECONC check that those their
3361 arguments, which must be proper lists, are really so;
3362 ** An array specialized to be unable to hold elements has been
3363 implemented, as required -- yes, really -- by ANSI;
3364 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3365 on malformed property lists;
3367 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3368 * incompatible packaging change: in line with Unix convention,
3369 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3370 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3371 * REQUIRE and PROVIDE are now optionally capable of doing something
3372 useful. See the documentation string for REQUIRE.
3373 * infrastructure for a managed SBCL contrib system: contributed
3374 modules in this release include:
3375 ** the ASDF system definition facility;
3376 ** an interface to the BSD Sockets API;
3377 ** an ACL-like convenience interface to the repl;
3378 (thanks to Kevin Rosenberg)
3379 ** an implementation of ROTATE-BYTE, with efficient implementation
3381 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3382 gives a closer approximation to the right answer than previously.
3383 (thanks to Raymond Toy)
3384 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3385 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3386 optional environment arguments, as required by ANSI.
3387 * fixed bugs in other functions taking environment objects, allowing
3388 calls with an explicit NIL environment argument to be compiled
3390 * fixed bug 228: primary return values from
3391 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3392 COMPILE or FUNCTION.
3393 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3394 :TYPE will no longer signal errors on innocuous objects.
3395 * fixed bug 231b: SETQ is better at respecting type declarations in
3396 the lexical environment.
3397 * fixed a bug in DEFCLASS: classes named by symbols with no or
3398 unprintable packages can now be defined.
3399 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3400 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3401 * fixed compiler failure related to checking types of functions.
3402 (reported by Robert E. Brown)
3403 * the compiler is now much more consistent in its error-checking
3404 treatment of bounding index arguments to sequence functions: in
3405 (SAFETY 3) code, errors will be signalled in almost all cases if
3406 invalid sequence bounding indices are passed to functions defined
3407 by ANSI to operate on sequences.
3408 * fixed a bug in the build procedure: documentation of SBCL-specific
3409 packages is now preserved and available in the final Lisp image.
3410 * lifted FDEFINITION lookup out of loops in the implementation of
3411 many list operations. (thanks to Robert E. Brown)
3412 * fixed a bug in the reader: the #n# reader macro now works for
3413 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3414 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3415 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3416 E. Brown and Tony Martinez respectively)
3417 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3418 SLOT-BOUNDP: in particular, it is now able to optimize them much
3419 better, and is now not vulnerable to having packages renamed.
3420 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3421 always called when a slot is not present in an instance. (thanks
3423 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3424 longer signal an error on unreading a character following EOF on
3425 the previous constituent stream. (thanks to Tony Martinez)
3426 * fixed some bugs revealed by Paul Dietz' test suite:
3427 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3428 not just nonnegative fixnums;
3429 ** the logical bit-array operators such as BIT-AND now accept an
3430 explicit NIL for their "opt-arg" argument (to indicate a
3431 freshly-consed result bit-array);
3432 ** ELT now signals an error on an invalid sequence index in safe
3434 ** the type system is now cleverer about negations of numeric
3435 types, and consequently understands the BIGNUM and RATIO types
3437 ** the type system is now cleverer about the interaction between
3438 INTEGER and RATIO types: while bugs still remain, many more
3439 cases are accurately computed;
3440 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3441 if it is in the last clause;
3442 ** CONSTANTLY now correctly returns a side-effect-free function in
3444 ** DECLARE is no longer treated as a special-operator; in
3445 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3446 * incremented fasl file version number due to the change in the
3447 DEFSTRUCT-SLOT-DESCRIPTION structure.
3449 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3450 * minor incompatible change: code processed by the "interpreter" or
3451 EVAL now has a compilation optimization policy of (DEBUG 2)
3452 (changed from (DEBUG 1)) to improve debuggability of interactive
3453 development, and to allow the use of the debug RETURN command in
3455 * an experimental implementation of the RETURN command for the
3456 debugger has been included. (thanks to Frederik Kuivinen)
3457 * fixed bug 62: constraints were not propagated into a loop.
3458 * fixed bug in embedded calls of SORT (reported and investigated by
3460 * fixed some bugs revealed by Paul Dietz' test suite:
3461 ** printing and reading of arrays with some dimensions having
3462 length 0 (thanks to Gerd Moellmann);
3463 ** BOA constructor with &AUX argument without a default value does
3464 not cause a type error;
3465 ** CONSTANTP now returns true for all self-evaluating objects.
3467 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3468 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3469 accessors that are related by inheritance, as specified in the
3470 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3471 Valtteri Vuorikoski)
3472 * The compiler is now able to inline functions that were defined in
3473 a complex lexical environment (e.g. inside a MACROLET).
3474 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3476 * Support for the upcoming FreeBSD-5.0 release has been included.
3477 (thanks to Dag-Erling Smorgrav)
3478 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3479 effect when it is not in a toplevel context.
3480 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3481 stand a better chance of being correct. (thanks to Gerd
3483 * fixed bug in COERCE, which now signals an error on coercing a
3484 rational to a bounded real type which excludes the expected
3486 * The compiler is now able to derive types more accurately from the
3487 COERCE and COMPILE functions.
3488 * fixed bug 223: functional binding is considered to be constant
3489 only for symbols in the CL package.
3490 * fixed bug 231: SETQ did not check the type of a variable being set
3491 (reported by Robert E. Brown)
3492 * A new optimization for MAKE-INSTANCE has been included, fixing
3493 various bugs (including relating to :ALLOCATION :CLASS slots and
3494 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3496 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3497 ** As required by ANSI, LOOP now disallows anonymous collection
3498 clauses such as COLLECT I in conjunction with aggregate boolean
3499 clauses such as THEREIS (= I 1);
3500 ** LOOP now signals an error when any variable is reused in the
3501 same loop (including the potentially useful construct analogous
3502 to WITH A = 1 WITH A = (1+ A);
3503 ** IT is only a special loop symbol within the first clause of a
3504 conditional loop clause;
3505 ** LOOP with a typed iteration variable over a hashtable now
3506 signals a type error iff it should.
3507 * fixed some other bugs revealed by Paul Dietz' test suite:
3508 ** FILE-STREAM now names the class previously known as FD-STREAM;
3509 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3510 argument) no longer signals an error;
3511 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3512 of the slot symbol, rather than using the current package
3513 ((:CONC-NAME "") continues to intern the slot's name in the
3515 * incremented fasl file version number, because of the incompatible
3516 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3517 of the new implementation of DEFINE-COMPILER-MACRO.
3519 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3520 * Support for building SBCL for MIPS platforms running in
3521 little-endian mode has now been checked in, and basic
3522 functionality on said platforms verified.
3523 * minor incompatible change: PCL now records the pathname of a file
3524 in which methods and the like are defined, rather than its
3526 * minor incompatible change: TRUENAME now considers the truename of
3527 a file naming a directory to be the pathname with :DIRECTORY
3528 component indicating that directory.
3529 * minor incompatible change: a NAMED clause in the extended form of
3530 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3531 reason for the previous behaviour is unclear.
3532 * more systematization and improvement of CLOS and MOP conformance
3533 in PCL (thanks to Gerd Moellman and Pierre Mai):
3534 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3536 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3537 primary methods with no specializers;
3538 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3540 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3541 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3542 FORWARD-REFERENCED-CLASSes; error reporting on
3543 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3545 ** SXHASH on CLOS instances now uses a slot internal to the
3546 instance to return different numbers on distinct instances,
3547 while preserving the same return value through invocations of
3549 ** DEFMETHOD signals errors when methods with longer incongruent
3550 lambda lists are added to generic functions;
3551 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3552 CLASS, as specified in AMOP;
3553 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3554 on the order returned by the primary method for classes of
3555 class STANDARD-CLASS;
3556 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3557 * fixed some bugs shown by Paul Dietz' test suite:
3558 ** DOLIST puts its body in TAGBODY;
3559 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3561 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3562 value producing form;
3563 ** if more variables are given to PROGV than values, extra
3564 variables are bound and made to have no value;
3565 ** NSUBSTITUTE on list arguments gets the right answer with
3567 ** ELT signals an error of type TYPE-ERROR when the index argument
3568 is not a valid sequence index;
3569 ** LOOP signals (at macroexpansion time) an error of type
3570 PROGRAM-ERROR when duplicate variable names are found;
3571 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3572 ** FUNCALL of special-operators now cause an error of type
3574 ** PSETQ now works as required in the presence of side-effecting
3575 symbol-macro places;
3576 ** NCONC accepts any object as its last argument;
3577 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3579 ** loop-for-as-package does not require a package to be explicitely
3581 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3583 * fixed bug 166: compiler preserves "there is a way to go"
3584 invariant when deleting code.
3585 * fixed bug 172: macro lambda lists with required arguments after
3586 &REST arguments now cause an error to be signalled. (thanks to
3588 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3589 bug. (thanks to Matthew Danish)
3590 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3592 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3593 arguments are lexically rebound. (thanks to Gerd Moellmann and
3595 * fixed bug 194: error messages are now more informative when there
3596 is no primary method applicable in a call to a generic
3597 function. (thanks to Gerd Moellmann)
3598 * fixed bug in command line argument checking (thanks to Julian
3600 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3601 (thanks to Matthew Danish)
3602 * incremented fasl file version number, because of the
3603 SXHASH-related changes in the layout of CLOS data structures
3605 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3606 * minor incompatible change: The runtime (the Unix executable named
3607 "sbcl") is now much pickier about the .core files it will load.
3608 Essentially it now requires .core files to descend from the same
3609 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3610 as the runtime does. (The intent is to prevent the crashes which
3611 can occur, and which can even be reported as mysterious failures,
3612 when people patch the sources or change the build parameters
3613 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3614 sbcl and .core files.)
3615 * fixed bug: VALUES-LIST is no longer optimized away.
3616 * fixed bug 142: The FFI conversion of C string values to Lisp
3617 string values no longer conses excessively. (thanks to Nathan
3618 Froyd porting Raymond Toy's fix to CMU CL)
3619 * began to systematize and improve MOP conformance in PCL (thanks to
3620 Nathan Froyd, Gerd Moellman and Pierre Mai):
3621 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3623 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3624 ** FINALIZE-INHERITANCE is now called on class finalization;
3625 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3626 argument precedence order.
3627 * fixed bug 202: The compiler no longer fails on functions whose
3628 derived types contradict their declared type.
3629 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3630 so it can be non-toplevel.
3631 * The fasl file version number has changed (because of the new
3632 implementation of DEFMACRO).
3633 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3634 safe code, that any length requirement by their type-specifier
3635 argument is valid. The exceptions to this are described in bug
3637 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3638 functions now check the types of their inputs as required by ANSI.
3639 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3640 introduced symbol is DECLAREd to be SPECIAL.
3641 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3642 * fixed bug: :COUNT argument to sequence functions may be negative
3643 * fixed bug: body of DO-SYMBOLS may contain declarations
3644 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3645 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3646 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3647 symbol macro only once
3648 * fixed printing of call frame when argument list is unavailable
3649 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3650 * compiler no longer signals WARNING on unknown keyword
3653 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3654 * A beta-quality port to the mips architecture running Linux,
3655 based on the old CMUCL backend, has been made. It has been tested
3656 on a big-endian kernel, and works sufficiently well to be able to
3657 rebuild itself; it has not been tested in little-endian mode.
3658 * fixed an inconsistency between gencgc.c and purify.c which made
3659 dumping/loading .core files unreliable
3660 * fixed bug 120a: The compiler now deals correctly with IFs where
3661 the consequent is the same as the alternative, instead of
3662 misderiving the return type. (thanks to Alexey Dejneka)
3663 * fixed bug 113: Logical pathnames are now dumpable (the logical
3664 host is resolved at load-time, throwing an error if it is not
3666 * fixed bug 174: FORMAT's error message is slightly clearer when a
3667 non-printing character is used in a format directive.
3668 * fixed several bugs in compiler checking of type declarations, i.e.
3669 violations of the Python "declarations are assertions" principle
3670 (thanks to Alexey Dejneka)
3671 * fixed several bugs in PCL's error checking (thanks to Gerd
3673 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3675 * fixed bug in compilation of functions as first class values
3676 (thanks to Antonio Martinez-Shotton)
3677 * The compiler's handling TYPE-ERRORs which it can prove will
3678 inevitably happen at runtime has been cleaned up and corrected
3679 in several ways. (thanks to Alexey Dejneka)
3680 * improved argument type checking for various basic arithmetic
3681 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3682 lavished on them in the past that they can be compiled in many
3683 ways in different special cases
3684 * fixed bug 181: compiler checks validity of user supplied type
3686 * cleaned up code flushing in optimization: Function calls which
3687 should signal errors for safety purposes (e.g. which ANSI says
3688 should signal errors when their arguments are of incorrect type)
3689 are no longer optimized away.
3690 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3691 * incremented fasl file version number, because changes in the
3692 implementation of sequence functions like COERCE caused
3693 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3694 in old inline expansions) to become undefined. (Actually these
3695 changes were later undone, so we might very well be binary
3696 compatible with 0.7.7 after all, but leaving the version number
3697 incremented seemed like the simplest and most conservative
3700 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3701 * An alpha-quality port to the parisc architecture running Linux,
3702 based on the old CMUCL backend, has been made. This, even more so
3703 than the other backends, should be considered still a work in
3704 progress; known problems include that the Linux kernel in 64-bit
3705 mode does not propagate the correct sigcontext structure to
3706 userspace, and consequently SBCL on a parisc64 kernel will not
3708 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3709 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3710 suppressed.) Also now that the compiler is looking at declarations
3711 in the environment, it checks optimization declarations as well,
3712 and suppresses inlining when (> DEBUG SPEED).
3713 * More fixes have been made to treatment of floating point exception
3714 treatment and other Unix signals. In particular, floating point
3715 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3716 * The detection and handling of control stack exhaustion (infinite
3717 or very deeply nested recursion) has changed. Stack exhaustion
3718 detection is now done by write-protecting pages at the OS level
3719 and applies at all optimization settings; when found, a
3720 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3721 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3722 be caught using IGNORE-ERRORS.
3723 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3724 correctly when transforming recursive LABELS functions to LETs.
3725 (thanks to Alexey Dejneka)
3726 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3727 that are names of constants or global variables.
3728 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3729 alien routines with docstrings.
3730 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3731 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3733 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3734 (thanks to Eric Marsden)
3735 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3736 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3737 * Bug fix: The SPARC backend can now compile functions involving
3738 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3739 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3740 to a functions expecting a PATHNAME-DESIGNATOR.
3741 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3742 lambda lists. (thanks to Alexey Dejneka)
3743 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3744 functions so that EXPORTing the name of the class doesn't cause
3745 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3746 to Antonio Martinez for reporting this)
3747 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3748 constant-folded without failing an assertion. (thanks to Einar
3749 Floystad Dorum for reporting this)
3750 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3751 types are now dealt with more correctly by the compiler.
3752 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3753 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3754 behaviour analogous to RENAME-FILE. This puts its behaviour more
3755 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3757 * The fasl file version number has changed again. (because of the
3758 bug fix involving the names of PCL MAKE-INSTANCE functions)
3760 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3761 * bug fix: Floating point exceptions are treated much more
3762 consistently on the x86/Linux and PPC/Linux platforms.
3763 * Array initialization with :INITIAL-ELEMENT is now much faster for
3764 cases when the compiler cannot open code the array creation, but
3765 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3766 array accesses have also seen a speed increase.
3767 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3768 specified. (This was at the root of some bad interactions between
3769 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3771 * bug fix: Internal error arguments for undefined functions are now
3772 computed correctly on the PPC/Linux platform.
3773 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3774 Raymond Toy's patch for CMU CL)
3775 * Support for the Solaris 9 operating environment has been included
3776 (thanks to Daniel Merritt)
3777 * A very ugly but hopefully complete draft of the missing FFI chapter
3778 of the manual has been created by reformatting the corresponding
3779 CMU CL manual chapter into (currently very ugly and incoherent)
3780 DocBook and bringing it up to date for SBCL behavior. Thus, the
3781 manual is now essentially complete, at least by my extreme
3782 once-and-only-once standards, whereby it's acceptable to refer to
3783 the doc strings of SB-EXT functions as the primary documentation.
3784 * The fasl file version number has changed again, due to cleanup of
3785 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3786 is no longer a static symbol.)
3788 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3789 * SBCL now builds with OpenMCL (version 0.12) as the
3790 cross-compilation host; also, more progress has been made toward
3791 bootstrapping under CLISP.
3792 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3794 * bug 158 fixed: The compiler can now deal with integer loop
3795 increments different from 1; fixing this turned out also to fix
3797 * bug 169 fixed: no more bogus warnings about using lexical bindings
3798 despite the presence of perfectly good SPECIAL declarations (thanks
3799 to David Lichteblau)
3800 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3801 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3802 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3804 * bug 180 fixed: Method combination specifications no longer ignore
3805 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3806 * bug fix: Structure type predicate functions now check their argument
3807 count as they should.
3808 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3809 correctly. (thanks to Pierre Mai)
3810 * minor incompatible change: The --noprogrammer option is deprecated
3811 in favor of the new --disable-debugger option, which is very similar.
3812 (The major difference is that it takes effect at a slightly different
3813 time at startup, causing handling of errors in --sysinit and
3814 --userinit files will be affected differently.) The
3815 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3816 been added to allow this functionality to be controlled from ordinary
3817 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3818 maintainers, who might want to run non-interactive scripts to
3819 build SBCL cores which will later be used interactively.)
3820 * minor incompatible change: The LOAD function no longer, when given
3821 a wild pathname to load, loads all files matching that pathname.
3822 Instead, an error of type FILE-ERROR is signalled.
3824 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3825 * bug 147 fixed: The compiler preserves its block link/count
3826 invariants more correctly now so that it doesn't crash. (thanks
3828 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3830 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3831 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3832 no-value-for-this-character as NIL (as specified by ANSI).
3833 * HOST-NAMESTRING on physical pathnames now returns a string that is
3834 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3835 (thanks to Christophe Rhodes)
3836 * The Alpha port handles icache flushing more correctly. (thanks to
3838 * More progress has been made toward bootstrapping under CLISP. (thanks
3839 to Christophe Rhodes)
3840 * The fasl file format has changed again, because dynamic loading
3841 on OpenBSD (which has non-ELF object files) motivated some cleanups
3842 in the way that foreign symbols are transformed and passed around.
3843 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3844 is no longer treated as whitespace by the reader, but instead as
3845 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3846 |A
\7fB|, instead of A as it used to.
3848 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3849 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3850 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3851 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3852 this as of 0.7.1.45, but was left out of the previous news section
3853 (thanks to Dan Barlow)
3854 * SBCL now runs on the Solaris operating system on SPARC architectures
3855 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3856 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3857 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3858 * SPARC backend cleanups, allowing builds of cores optimized for V8
3859 and V9 SPARCS, and also emission of code targeted to a particular
3860 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3862 * SBCL is closer to bootstrapping under CLISP, thanks to various
3863 fixes by Christophe Rhodes.
3864 * The fasl file format has changed again, to allow the compiler's
3865 INFO database to support symbol macros.
3866 * The user manual (in doc/) is formatted into HTML more nicely.
3867 (thanks to coreythomas)
3868 * The system is smarter about SUBTYPEP relationships, especially
3869 those involving NOT types (including types such as ATOM which are
3870 represented internally using NOT types). Thus SUBTYPEP is less
3871 likely to return (VALUES NIL NIL) in general, and in particular
3872 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3874 * The fasl file format has changed again, because the internal
3875 representation of types now includes a new slot to support the new
3876 SUBTYPEP-of-NOT-types logic.
3877 * (not a change in the main branch of SBCL, but a related prototype
3878 which can hopefully be merged into the main branch of SBCL in the
3879 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3880 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3881 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3882 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3883 dispatch macro character combinations. (thanks to Alexey Dejneka)
3884 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3885 that superficially look like logical namestrings correctly.
3886 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3888 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3889 default supplied-p) for &optional and &key arguments. (thanks to
3892 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3893 * incompatible change: The compiler is now less aggressive about
3894 tail call optimization, doing it only when (> SPACE DEBUG) or
3895 (> SPEED DEBUG). (This is an incompatible change because there are
3896 programs which relied on the old CMU-CL-style behavior to optimize
3897 away their unbounded recursion which will now die of stack overflow.)
3898 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3899 for non-GENCGC systems has been increased to 20M (since that
3900 seems much closer to the likely performance optimum for modern
3901 systems than the old 4M value was)
3902 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3903 and *DEBUG-PRINT-LEVEL*
3904 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3905 of CMU CL's support for SPARC, and various endianness and other
3906 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3907 * new syntactic sugar for the Unix command line: --load foo.bar is now
3908 an alternate notation for --eval '(load "foo.bar")'.
3910 ** The system now detects stack overflow and handles it gracefully,
3911 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3912 optimization settings. (This is a good thing in general, and
3913 its introduction in this version should be particularly timely
3914 for anyone whose code fails because of suppression of tail
3916 ** The system now hunts for the C variable "environ" in a more
3917 devious way, to avoid segfaults when the C library version differs
3918 between compile time and run time. (thanks to Christophe Rhodes)
3919 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3920 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3921 ** The compiler no longer issues bogus style warnings for undefined
3922 classes in the same source file as the DEFCLASSes which defined
3923 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3925 ** fixes in CONDITION class precedence list for undefined function
3926 errors (thanks to Alexei Dejneka)
3927 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3928 correctly. (thanks to Dan Barlow)
3929 ** portability fixes aiming at bootstrapping under CLISP (thanks
3930 to Dave McDonald and Christophe Rhodes)
3931 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3932 ** fixes in type translation and and type inference (thanks to
3934 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3935 ** various fixes in the new ports (thanks to Dan Barlow)
3936 * several changes related to debugging:
3937 ** suppression of tail recursion, as noted above
3938 ** stack overflow detection, as noted above
3939 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3940 is now the default. (For some time encapsulation has been more
3941 reliable than the breakpoint-based :ENCAPSULATE NIL
3942 implementation, at least on X86 systems; and I just noticed that
3943 encapsulation also seems closer to the spirit of the ANSI
3946 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3948 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3949 up properly again. (There was a packaging bug in 0.7.0 which
3950 left their definitions in SB-SYS::LOAD-FOREIGN and
3951 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3952 vital for most things which interface to C-level interfaces,
3953 like extensions working with sockets or databases or
3954 Perl-compatible regexes or whatever, and the need to fix
3955 this bug is the main reason that 0.7.1 was released so
3957 ** DEFGENERIC is now choosier about the methods it redefines, so that
3958 reLOADing a previously-LOADed file containing DEFGENERICs does
3959 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3960 cycle now works as it should. (thanks to Alexey Dejneka)
3961 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3962 fixed by Christophe Rhodes. (He actually submitted this patch
3963 months ago, and I delayed until after 0.7.0.)
3964 ** Bug 111 (internal compiler confusion about runtime checks on
3965 FUNCTION types) was fixed by Alexey Dejneka.
3966 * Some internal cleanups (getting rid of variables which aren't
3967 needed now that the byte interpreter is gone) caused the fasl
3968 file format number to change again.
3970 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3971 * major incompatible change: The default fasl file extension, i.e. the
3972 default extension for files produced by COMPILE-FILE, has changed
3973 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3975 ** There are many changes in the implementation of the compiler.
3976 SBCL is now essentially a compiler-only implementation of ANSI
3977 Common Lisp. EVAL still "interprets" a few special cases, but
3978 almost all the interesting cases are handled by creating
3979 a LAMBDA expression, calling COMPILE on it, then calling
3980 FUNCALL on the result.
3981 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3982 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3983 Since the code is newer, there might still be some new bugs
3984 (though not as many as before Martin Atzmueller's fixes:-). But
3985 the new code is substantially simpler and clearer, and hopefully
3986 any remaining bugs will be simpler, less fundamental, and more
3987 fixable then the bugs in the old code.
3988 ** The revised compiler is still a little unsteady on its feet.
3990 *** The debugging information it produces (particularly the names
3991 of FUNCTION objects) is sometimes much less useful than what
3992 the old compiler produced.
3993 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3994 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3995 within a MACROLET) has been temporarily weakened.
3996 ** There are new compiler optimizations for various functions:
3997 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3998 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3999 *** the math functions TRUNCATE, FLOOR, and CEILING
4000 *** the function-of-all-trades COERCE
4001 Mostly these should be transparent, but there's one
4002 potentially-annoying problem (bug 117): when the compiler
4003 inline-expands a function and does type analysis on the result,
4004 it can create control paths which have type mismatches, and
4005 when it can't prove that those control paths aren't taken,
4006 it will issue WARNINGs about the type mismatches. This is
4007 a particular problem in practice for the new sequence functions.
4008 It's not clear how this should be fixed, and for now, a
4009 workaround is given in the entry for 117 in the BUGS file.
4010 ** (Because of the interaction between the two previous items --
4011 occasional inlining problems and new inline expansions -- some
4012 of the new sequence function optimizations won't really kick in
4013 completely until debugging information, and then inlining, are
4014 straightened out in some future version.)
4015 * minor incompatible changes:
4016 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4017 DIRECTORY no longer implicitly promotes NIL slots of its
4018 pathname argument to :WILD. In particular, when you ask for the
4019 contents of a directory (which you used to be able to do without
4020 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4021 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4022 ** changes in behavior that ANSI explicitly defines to be
4023 implementation dependent:
4024 *** The new compiler-only implementation still conforms with ANSI,
4025 but acts a little different than before. Besides the obvious
4026 changes in performance tradeoffs (that the cost per form passed
4027 to EVAL has gone up, and the cost per form executed by EVAL
4028 has gone down), the behavior of the system changes a little
4029 because there are no longer any interpreted function objects.
4030 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4031 e.g. doing COMPILE on the output of interactive DEFUN is
4033 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4035 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4036 has changed from (:CL) to NIL.
4037 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4038 e.g. #\Newline and #\Tab, don't have names specified in the
4039 ANSI Common Lisp standard, is now based on their ASCII symbolic
4040 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4041 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4042 are no longer used for output.
4043 ** changes in internal implementation constants:
4044 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4045 4 million. (If your application spends a lot of time GCing and
4046 you have a lot of RAM, you might want to experiment with
4047 increasing it even more.)
4048 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4049 However, almost all old code should still continue to work without
4050 immediate update, as SB-C-CALL is now a (deprecated) nickname
4052 ** Old operator names in the style DEF-FOO are now deprecated in
4053 favor of new corresponding names DEFINE-FOO, for consistency with
4054 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4055 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4056 internal symbols, but a few supported extensions like
4057 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4058 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4059 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4060 etc. as you get deeper into recursive calls to the debugger
4061 command loop, instead of the old "5]", "5]]", "5]]]"
4062 sequence. (I was motivated to do this when squabbles between
4063 ILISP and SBCL left me very deeply nested in the debugger. In the
4064 short term, this change will probably provoke more ILISP/SBCL
4065 squabbles, but hopefully it will be an improvement in the long run.)
4066 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4067 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4068 function, since declaiming return types involving aliens is
4069 (1) annoyingly messy to do by hand and (2) vital to efficient
4070 compilation of code which calls such functions.
4071 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4072 longer reexported by the SB-EXT package. They're solely useful
4073 for alien code, so it seems more logical that you should get
4074 them from the SB-ALIEN package, not in SB-EXT.
4075 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4076 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4077 features. Instead, the code that they used to control is always
4078 built into the system.
4079 * many other bug fixes
4080 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4081 advantage of the new EVAL-WHEN stuff and to clean them up in
4082 general, and they are now more ANSI-compliant in a number of
4083 ways. Martin Atzmueller is responsible for a lot of this.
4084 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4086 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4087 *** correct ERROR type for various file operations
4088 *** some fixes for Lisp streams
4089 *** DEFMETHOD syntax checking
4090 *** changing old weird representation of debug information as
4091 strings (which, among their other deficiencies, don't transform
4092 correctly when you rename packages, and don't change their
4093 print representation when you change things like *PACKAGE*
4094 and *PRINT-LENGTH*) to symbols and lists of symbols
4095 He also made several improvements and fixed several bugs in DESCRIBE.
4096 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4098 *** misbehavior of WRITE-STRING/WRITE-LINE
4099 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4100 and several other LOOP problems as well
4101 *** DIRECTORY when similar filenames are present
4102 *** DEFGENERIC with :METHOD options
4103 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4104 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4105 *** argument ordering in FIND with :TEST option
4106 *** mishandled package designator argument in APROPOS-LIST
4107 *** various problems in the backquote readmacro
4108 *** a bug in APROPOS
4109 *** probably some others that I'm not describing very well here,
4110 since the CVS log documents them by reference to sbcl-devel
4111 messages, and the SourceForge archives aren't working well.:-(
4112 ** Dan Barlow improved the Alpha port (and is making progress on the
4113 PPC port, for those of you who think different).
4114 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4115 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4116 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4117 continues to work on the SPARC port (for those of you in a position
4118 to look down upon our little PC-compatible boxes from a great height).
4119 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4120 and uses that copy, rather than the current dynamic value, when
4121 it's trying to decide whether to truncate output. Thus e.g.
4122 (let ((*print-lines* 50))
4123 (pprint-logical-block (stream nil)
4125 (let ((*print-lines* 8))
4126 (print (aref possiblybigthings i) stream)))))
4127 should now truncate the logical block only at 50 lines, instead of
4128 often truncating it at 8 lines, as it did before.
4129 * The doc/cmucl/ directory, containing old CMU CL documentation
4130 from the time of the fork, is no longer part of the base system.
4131 SourceForge has shut down its anonymous FTP service, and with it
4132 my original plan for distributing the old CMU CL documentation
4133 there. For now, if you need these files you can download an old
4134 SBCL source release and extract them from it.
4135 * The fasl file version number changed again, for dozens of reasons,
4136 some of which are apparent above.
4138 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4139 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4140 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4141 patch, so that DISASSEMBLE output is much nicer.
4142 * The code in the SB-PROFILE package now seems reasonably stable.
4143 I still haven't decided what the final interface should look like
4144 (I'd like PROFILE to interact cleanly with TRACE, since both
4145 facilities use function encapsulation) but if you have a need
4146 for profiling now, you can probably use it successfully with
4147 the current CMU-CL-style interface.
4148 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4149 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4150 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4151 link now returns the dangling link itself, and for similar
4152 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4153 link itself. (In these cases the old code signalled an error and
4154 looped endlessly, respectively.) Thus, DIRECTORY now works even
4155 in the presence of dangling and cyclic symbolic links.
4156 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4157 is now a supported extension again, since the consensus on
4158 sbcl-devel was that it can be useful for ordinary development
4159 work, not just for debugging SBCL itself.
4160 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4161 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4162 that currently-defined functions might be redefined later with
4163 different return types.
4164 * Hash tables can be printed readably, as inspired by CMU CL code
4165 of Eric Marsden and SBCL code of Martin Atzmueller.
4166 * better error handling in CLOS method combination, thanks to
4167 Martin Atzmueller porting Pierre Mai's CMU CL patches
4168 * more overflow fixes for >16Mbyte I/O buffers
4169 * A bug in READ has been fixed, so that now a single Ctrl-D
4170 character suffices to cause end-of-file on character streams.
4171 In particular, now you only need one Ctrl-D at the command
4172 line (not two) to exit SBCL.
4173 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4175 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4176 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4177 does the right thing.
4178 * The implementation of some type tests, especially for CONDITION
4179 types, is now tidier and maybe faster, due to CMU CL code
4180 originally by Douglas Crosher, ported by Martin Atzmueller.
4181 * Some math functions have been fixed, and there are new
4182 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4183 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4184 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4185 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4186 likely to be built into sbcl-0.7.0.)
4187 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4188 CL, ported to SBCL by Martin Atzmueller)
4189 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4190 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4191 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4192 * There's a new slam.sh hack to shorten the edit/compile/debug
4193 cycle for low-level changes to SBCL itself, and a new
4194 :SB-AFTER-XC-CORE target feature to control the generation of
4195 the after-xc.core file needed by slam.sh.
4196 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4197 COMPILE-FILE is no longer supported, so that now every function
4198 gets an entry point, so that block compilation looks a little
4199 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4200 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4201 returns the number of bytes consed since the system started,
4202 rather than the number consed since the first time the function
4203 was called. (The new definition parallels ANSI functions like
4204 CL:GET-INTERNAL-RUN-TIME.)
4205 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4206 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4207 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4208 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4209 * Fasl file version numbers are now independent of the target CPU,
4210 since historically most system changes which required version
4211 number changes have affected all CPUs equally. Similarly,
4212 the byte fasl file version is now equal to the ordinary
4215 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4216 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4217 is no longer recognized. I apologize for this, because it was
4218 listed in SB-EXT as a supported extension, but I found that
4219 its existing behavior was poorly specified, as well as incorrectly
4220 specified, and it looked like too much of a mess to straighten it
4221 out. I have enough on my hands trying to get ANSI stuff to work..
4222 * many patches ported from CMU CL by Martin Atzmueller, with
4223 half a dozen bug fixes in pretty-printing and the debugger, and
4224 half a dozen others elsewhere
4225 * fixed bug 13: Floating point infinities are now supported again.
4226 They might still be a little bit flaky, but thanks to bug reports
4227 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4228 as flaky as they were.
4229 * The --noprogrammer command line option is now supported. (Its
4230 behavior is slightly different in detail from what the old man
4231 page claimed it would do, but it's still appropriate under the
4232 same circumstances that the man page talks about.)
4233 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4234 are now supported, and enabled by default. Thus, the compiler can
4235 handle many floating point and complex operations much less
4236 inefficiently. (Thus e.g. you can implement a complex FFT
4238 * The compiler now detects type mismatches between DECLAIM FTYPE
4239 and DEFUN better, and implements CHECK-TYPE more correctly, and
4240 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4241 thanks to patches from Martin Atzmueller.
4242 * various fixes to make the cross-compiler more portable to
4243 ANSI-conforming-but-different cross-compilation hosts (notably
4244 Lispworks for Windows, following bug reports from Arthur Lemmens)
4245 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4246 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4247 fixed thanks to Pierre Mai's CMU CL patches.
4248 * fixes to keep the system from overflowing internal counters when
4249 it tries to use i/o buffers larger than 16M bytes
4250 * fixed bug 45a: Various internal functions required to support
4251 complex special functions have been merged from CMU CL sources.
4252 (When I was first setting up SBCL, I misunderstood a compile-time
4253 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4254 * improved support for type intersection and union, fixing bug 12
4255 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4256 more obscure bugs as well
4257 * some steps toward byte-compiling non-performance-critical
4258 parts of the system, courtesy of patches from Martin Atzmueller
4259 * Christophe Rhodes has made some debian packages of sbcl at
4260 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4261 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4262 stable, but are nonetheless usable. When he's ready, I'd be happy
4263 to add them to the SourceForge "File Releases" section. (And if
4264 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4265 * new fasl file format version number (because of changes in
4266 internal representation of (OR ..) types to accommodate the new
4267 support for (AND ..) types, among other things)
4269 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4270 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4272 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4274 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4275 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4276 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4277 * DESCRIBE now works on structure objects again.
4278 * Most function call argument type mismatches are now handled as
4279 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4280 know whether the function will be redefined before the call is
4281 executed. (The compiler could flag local calls with full WARNINGs,
4282 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4283 it doesn't keep track of enough information to know whether calls
4284 are local in this sense.)
4285 * Compiler output is now more verbose, with messages truncated
4286 later than before. (There should be some supported way for users
4287 to override the default verbosity, but I haven't decided how to
4288 provide it yet, so this behavior is still controlled by the internal
4289 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4290 src/compiler/ir1util.lisp.)
4291 * Fasl file format version numbers have increased again, because
4292 support for the Gray streams extension changes the layout of the
4293 system's STREAM objects.
4294 * The Gray subclassable streams extension now works, thanks to a
4295 patch from Martin Atzmueller.
4296 * The full LOAD-FOREIGN extension (not just the primitive
4297 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4298 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4299 but like most other programs, it defaults to copying the Unix
4300 environment from the original process instead of starting the
4301 new process in an empty environment.
4302 * Extensions which manipulate the Unix environment now support
4303 an :ENVIRONMENT keyword option which doesn't smash case or
4304 do other bad things. The CMU-CL-style :ENV option is retained
4305 for porting convenience.
4306 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4307 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4309 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4311 * A patch from Martin Atzmueller seems to have solved the SIGINT
4312 problem, and as far as we know, signal-handling now works cleanly.
4313 (If you find any new bugs, please report them!)
4314 * The system no longer defaults Lisp source file names to types
4315 ".l", ".cl", or ".lsp", but only to ".lisp".
4316 * The compiler no longer uses special default file extensions for
4317 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4318 seems to expect a single default extension for all compiled code,
4319 and there's no compelling reason to try to stretch the standard
4320 to allow two different extensions.) Instead, byte-compiled files
4321 default to the same extension as native-compiled files.
4322 * Fasl file format version numbers have increased again, because
4323 a rearrangement of internal implementation packages made some
4324 dumped symbols in old fasl files unreadable in new cores.
4325 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4326 many fewer weird special cases.
4327 * Bug #17 (differing COMPILE-FILE behavior between logical and
4328 physical pathnames) has been fixed, and some related misbehavior too,
4329 thanks to a patch from Martin Atzmueller.
4330 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4331 by Tim Moore, ported to SBCL by Martin Atzmueller.
4332 * Martin Atzmueller fixed several filesystem-related problems,
4333 including bug #36, in part by porting CMU CL patches, which were
4334 written in part by Paul Werkowski.
4335 * More compiler warnings in src/runtime/ are gone, thanks to
4336 more patches from Martin Atzmueller.
4337 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4340 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4342 * DESCRIBE now works on CONDITION objects.
4343 * The debugger now handles errors which arise when trying to print
4344 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4346 * The build system now uses an additional file, customize-target-features.lisp,
4347 to allow local modifications to the target *FEATURES* list. (The point of
4348 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4349 debugging features enabled, without having to worry about propagating it
4350 into everyone's system when I do a "cvs update".) When no
4351 customize-target-features.lisp file exists, the target *FEATURES* list
4352 should be constructed the same way as before.
4353 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4354 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4355 warn about behavior which is undefined under the ANSI spec. Note: This
4356 is specified by ANSI, but it's not very popular with programmers.
4357 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4358 macro in the SBCL sources for an example of a workaround which you
4359 might use to make portable ANSI-standard code which does what you want.
4360 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4361 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4362 when it's used as a non-toplevel form. (This is required in order
4363 to implement the DEFCONSTANT-EQX macro.)
4364 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4365 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4366 funny things, due to bugs in the implementation of EVAL-WHEN
4367 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4368 non-toplevel DEFCONSTANTs are uncommon.)
4369 * The core file version number and fasl file version number have been
4370 incremented, because the old noncompliant DEFCONSTANT behavior involved
4371 calling functions which no longer exist, and because I also took the
4372 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4373 * fixed bug 1 (error handling before read-eval-print loop starts), and
4374 redid debugger restarts and related debugger commands somewhat while
4376 ** The QUIT debugger command is gone, since it did something
4377 rather different than the SB-EXT:QUIT command, and since it never
4378 worked properly outside the main toplevel read/eval/print loop.
4379 Invoking the new TOPLEVEL restart provides the same functionality.
4380 ** The GO debugger command is also gone, since you can just invoke
4381 the CONTINUE restart directly instead.
4382 ** The TOP debugger command is also gone, since it's redundant with the
4383 FRAME 0 command, and since it interfered with abbreviations for the
4385 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4387 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4388 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4389 some porting work by Martin Atzmueller)
4390 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4391 with a boatload of patches which he ported to SBCL. Now that those
4393 ** The system tries to make sure that its low-priority messages
4394 are prefixed by semicolons, to help people who like to use
4395 syntax highlighting in their ILISP buffer. (This patch
4396 was originally due to Raymond Toy.)
4397 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4398 patches originally written by Raymond Toy.
4399 ** The compiler understands coercion between single-value and
4400 multiple-VALUES type expressions better, getting rid of some very
4401 weird behavior, thanks to patches originally by Robert MacLachlan
4402 and Douglas Crosher.
4403 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4404 lambda lists, thanks to a patch originally by Pierre Mai.
4405 ** The system no longer bogusly warns about "abbreviated type
4407 ** The compiler gets less confused by inlining and RETURN-FROM,
4408 thanks to some patches originally by Tim Moore.
4409 ** The system no longer hangs when dumping circular lists to fasl
4410 files, thanks to a patch originally from Douglas Crosher.
4411 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4412 undefined function error.
4413 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4414 in structure slot initforms) for now, documented workaround instead:-|
4415 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4416 * fixed bug 5: added stubs for various Gray stream functions called
4417 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4418 installed, at least appropriate type errors are generated
4419 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4420 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4421 consistently in DEFMETHOD forms.
4422 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4423 it doesn't seem to affect SBCL after all
4424 * The C runtime system now builds with better optimization and many
4425 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4427 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4429 * The system is now under CVS at SourceForge (instead of the
4430 CVS repository on my home machine).
4431 * The new signal handling code has been tweaked to treat register
4432 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4433 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4434 downstream, e.g. in debug-int.lisp, has implicit dependencies
4435 on the unsignedness of integer representation of machine words,
4436 and that caused the system to bomb out with infinite regress
4437 when trying to recover from type errors involving signed values,
4438 e.g. (BUTLAST '(1 2 3) -1).)
4439 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4440 (This was one of the bugs Peter Van Eynde reported back in July.)
4441 * The system now uses code inspired by Colin Walters' O(N)
4442 implementation of MAP (from the cmucl-imp@cons.org mailing
4443 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4444 inline the MAP operation, and there is more than one
4445 sequence argument to the MAP call (so that it can't just
4446 do ETYPECASE once and for all based on the type of the
4447 single sequence argument). (The old non-inline implementation
4448 of the general M-argument sequence-of-length-N case required
4449 O(M*N*N) time when any of the sequence arguments were LISTs.)
4450 * The QUIT :UNIX-CODE keyword argument has been renamed to
4451 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4452 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4454 * Raymond Wiker's patches to port dynamic loading from Linux to
4455 FreeBSD have been added.
4456 * The BUGS file is now more nearly up to date, thanks in large part
4457 to Martin Atzmueller's review of it.
4458 * The debugger now flushes standard output streams before it begins
4459 its output ("debugger invoked" and so forth).
4460 * The core version number and fasl file version number have both
4461 been incremented, because of incompatible changes in the layout
4463 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4464 used to not be called for a saved Lisp image.)
4465 * Martin Atzmueller's version of a patch to fix a compiler crash,
4466 as posted on sbcl-devel 13 September 2000, has been installed.
4467 * Instead of installing Martin Atzmueller's patch for the
4468 compiler transform for SUBSEQ, I deleted the compiler transform,
4469 and transforms for some similar consing operations.
4470 * A bug in signal handling which kept TRACE from working on OpenBSD
4472 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4473 away by constant folding
4474 * The system now defines its address space constants in one place
4475 (in the Lisp sources), and propagates them automatically elsewhere
4476 (through GENESIS and the sbcl.h file). Therefore, patching the
4477 address map is less unnecessarily tedious and error-prone. The
4478 Lisp names of address space constants have also been systematized.
4479 * CVS tags like dollar-Header-dollar have been removed from
4480 the sources, because they have never saved me trouble and
4481 they've been source of trouble working with patches and other
4482 diff-related operations.
4483 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4484 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4486 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4488 * The system has been ported to OpenBSD.
4489 * The system now compiles with a simple "sh make.sh" on the systems
4490 that it's supported on. I.e., now you no longer need to tweak
4491 text in the target-features.lisp-expr and symlinks in src/runtime/
4492 by hand, the make.sh takes care of it for you.
4493 * The system is no longer so grossly inefficient when compiling code
4494 involving vectors implemented as general (not simple) vectors (VECTOR T),
4495 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4496 which dares to use the various sequence functions on non-simple
4497 vectors, takes less of a performance hit.
4498 * There is now a primitive type predicate VECTOR-T-P
4499 to test for the (VECTOR T) type, so that e.g.
4500 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4501 can now be compiled with some semblance of efficiency. (The old code
4502 turned the type declaration into a full call to %TYPEP at runtime!)
4503 * AREF on (VECTOR T) is still not fast, since it's still compiled
4504 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4505 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4506 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4507 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4508 without making full calls to SUBTYPEP at runtime.
4509 (Some analogous efficiency issues for non-simple vectors specialized to
4510 element types other than T, or for non-simple multidimensional arrays,
4511 have not been addressed. They could almost certainly be handled the
4512 same way if anyone is motivated to do so.)
4513 * The changes in array handling break binary compatibility, so
4514 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4515 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4516 instead of (VALUES T T).
4517 * By following the instructions that Dan Barlow posted to sbcl-devel
4518 on 2 July 2000, I was able to enable primitive dynamic object
4519 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4520 functionality is not implemented (since it calls ld to resolve
4521 library references automatically, requiring RUN-PROGRAM for its
4522 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4523 try to resolve library references) is now supported.
4524 * The system now flushes the standard output streams when it terminates,
4525 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4526 them at several other probably-convenient times, e.g. in each pass of
4527 the toplevel read-eval-print loop, and after evaluating a form given
4528 as an "--eval" command-line option. (These changes were motivated by a
4529 discussion of stream flushing issues on cmucl-imp in August 2000.)
4530 * The source transform for TYPEP of array types no longer assumes
4531 that an array whose element type is a not-yet-defined type
4532 is implemented as an array of T, but instead punts, so that the
4533 type will be interpreted at runtime.
4534 * There is now some support for cross-compiling in make.sh: each of
4535 the phases of make.sh has its own script. (This should be transparent
4536 to people doing ordinary, non-cross-compile builds.)
4537 * Since my laptop doesn't have hundreds of megabytes of memory like
4538 my desktop machine, I became more motivated to do some items on
4539 my to-do list in order to reduce the size of the system a little:
4540 ** Arrange for various needed-only-at-cold-init things to be
4541 uninterned after cold init. To support this, those things have
4542 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4543 symbols with such names are now uninterned after cold init).
4544 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4545 fasl files for cold load.
4546 ** Remove the old compiler structure pooling code (which used to
4547 be conditional on the target feature :SB-ALLOC) completely.
4548 ** Redo the representation of some data in cold init to be more compact.
4549 (I also looked into supporting byte compiled code at bootstrap time,
4550 which would probably reduce the size of the system a lot, but that
4551 looked too complicated, so I punted for now.)
4552 * The maximum signal nesting depth in the src/runtime/ support code has
4553 been reduced from 4096 to 256. (I don't know any reason for the very
4554 large old value. If the new smaller value turns out to break something,
4555 I'll probably just bump it back up.)
4556 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4558 * Many, many bugs reported by Peter Van Eynde have been added to
4559 the BUGS list; some have even been fixed.
4560 * While enabling dynamic object file loading, I tried to make the
4561 code easier to understand, renaming various functions and variables
4562 with less ambiguous names, and changing some function calling
4563 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4564 * While trying to figure out how to do the OpenBSD port, I tried to
4565 clean up some of the code in src/runtime/. In particular, I dropped
4566 support for non-POSIX signal handling, added various comments,
4567 tweaked the code to reduce the number of compilation warnings, and
4568 renamed some files to increase consistency.
4569 * To support the new automatic configuration functionality in make.sh,
4570 the source file target-features.lisp-expr has been replaced with the
4571 source file base-target-features.lisp-expr and the machine-generated
4572 file local-target-features.lisp-expr.
4573 * fixed a stupid quoting error in make.sh so that using CMU CL
4574 "lisp -batch" as cross-compilation host works again
4576 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4578 * DESCRIBE no longer tries to call itself recursively to describe
4579 bound/fbound values, so that it no longer fails on symbols which are
4580 bound to themselves (like keywords, T, and NIL).
4581 * DESCRIBE now works on generic functions.
4582 * The printer now prints less-screwed-up representations of closures
4583 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4584 * A private symbol is used instead of the :EMPTY keyword previously
4585 used to mark empty slots in hash tables. Thus
4586 (DEFVAR *HT* (MAKE-HASH-TABLE))
4587 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4588 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4589 now does what ANSI says that it should. (You can still get
4590 similar noncompliant behavior if bang on the hash table
4591 implementation with all the symbols you get back from
4592 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4593 This breaks binary compatibility, since tests for equality to
4594 :EMPTY are wired into things like the macroexpansion of
4595 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4597 * There's now a minimal placeholder implementation for CL:STEP,
4598 as required by ANSI.
4599 * An obscure bug in the interaction of the normal compiler, the byte
4600 compiler, inlining, and structure predicates has been patched
4601 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4602 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4604 * Missing ordinary arguments in a macro call are now detected even
4605 when the macro lambda list contains &KEY or &REST.
4606 * The debugger no longer complains about encountering the top of the
4607 stack when you type "FRAME 0" to explicitly instruct it to go to
4608 the top of the stack. And it now prints the frame you request even
4609 if it's the current frame (instead of saying "You are here.").
4610 * As specified by ANSI, the system now always prints keywords
4611 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4613 * The default initial SIZE of HASH-TABLEs is now smaller.
4614 * Type information from CLOS class dispatch is now propagated
4615 into DEFMETHOD bodies, so that e.g.
4616 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4618 is now basically equivalent to
4619 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4620 (DECLARE (TYPE SINGLE-FLOAT X))
4622 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4623 operation, without having to do run-time type dispatch.
4624 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4625 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4626 * Since I don't seem to be making big file reorganizations very often
4627 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4628 is overflowing my ability to conveniently back them up), I've finally
4629 checked the system into CVS. (The CVS repository is on my home system,
4630 not at SourceForge -- putting it on SourceForge might come later.)
4631 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4632 high-level GC-NOTIFY-FOO functions send their output. (There's
4633 still very little control of where low-level verbose GC functions
4634 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4635 less than it used to -- the GC-NOTIFY-FOO functions are now under
4636 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4637 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4638 in only one place in the source code, and propagates it automatically
4639 everywhere that it's needed. Thus e.g. when I bump the version from
4640 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4641 * The C source files now include boilerplate legalese and documentation
4642 at the head of each file (just as the Lisp source files already did).
4643 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4644 to his page will be replaced with a link to his new CLiki service.
4646 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4648 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4649 * The build process now looks for GNU make under the default name "gmake",
4650 instead of "make" as it used to. If GNU make is not available as "gmake"
4651 on your system, you can change this default behavior by setting the
4652 GNUMAKE environment variable.
4653 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4654 can build without error under CMU CL.
4656 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4658 * There is now a partial SBCL user manual (with some new text and some
4659 text cribbed from the CMU CL manual).
4660 * The beginnings of a profiler have been added (starting with the
4661 CMU CL profiler and simplifying and cleaning up). Eventually the
4662 main interface should be through the TRACE macro, but for now,
4663 it's still accessed through vaguely CMU-CL-style functions and macros
4664 exported from the package SB-PROFILE.
4665 * Some problems left over from porting CMU CL to the new
4666 cross-compilation bootstrap process have been cleaned up:
4667 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4668 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4669 part when getting rid of the compiler *BACKEND* stuff.)
4670 ** The value of *NULL-TYPE* was screwed up, because it was
4671 being initialized before the type system knew the final
4672 definition of the 'NULL type. This screwed up several key
4673 optimizations in the compiler, causing inefficiency in all sorts
4674 of places. (I found it because I wanted to understand why
4675 GET-INTERNAL-RUN-TIME was consing.)
4676 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4677 PROCLAIM FTYPE information. Unfortunately this broke binary
4678 compatibility again, since now the forms output by DEFGENERIC
4679 to refer to functions which didn't exist in 0.6.3.
4680 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4681 can use the new (as of 0.6.3) transform for SOME into MAP into
4683 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4684 values to (INTEGER 0 1000000), so that the time code will no longer
4685 occasionally get blown up by Linux returning 1000000 microseconds
4686 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4687 its output conform to the ANSI spec. (Alas, this makes its output
4688 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4689 * A full call to MAP NIL with a single sequence argument no longer conses.
4690 * fixes to problems pointed out by Martin Atzmueller:
4691 * The manual page no longer talks about multiprocessing as though
4692 it were currently supported.
4693 * The ILISP support patches have been removed from the distribution,
4694 because as of version 5.10.1, ILISP now supports SBCL without us
4695 having to maintain patches.
4696 * added a modified version of Raymond Toy's recent CMU CL patch for
4697 EQUALP comparison of HASH-TABLE
4699 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4701 * The system still can't cross-compile itself with
4702 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4703 entails), but at least it can compile more of itself that way
4704 than it used to be able to, and various buglets which were uncovered
4705 by trying to cross-compile itself that way have now been fixed.
4706 * This release breaks binary compatibility again. This time
4707 at least I've incremented the FASL file format version to 2, so that the
4708 problem can be detected reliably instead of just causing weird errors.
4709 * various new style warnings:
4710 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4711 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4712 ** using the lexical binding of a variable named in the *FOO* style
4713 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4714 as specified by ANSI.
4715 * *RANDOM-STATE* is no longer automatically initialized from
4716 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4717 default behavior of the system is to repeat its behavior every time
4718 it's run. If you'd like to change this behavior, you can always
4719 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4720 old convention there was no comparably easy way to get the system to
4721 repeat its behavior every time it was run.
4722 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4723 FTYPE declarations has been removed, in favor of their ANSI
4724 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4725 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4726 the types of their sequence arguments can be determined at compile time.
4727 This is done through a new open code expansion for MAP which eliminates
4728 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4729 argument types can be determined at compile time.
4730 * The optimizer now transforms COERCE into an identity operation when it
4731 can prove that the coerced object is already of the correct type. (This
4732 can be a win for machine generated code, including the output of other
4733 optimization transforms, such as the MAP transform above.)
4734 * Credit information has been moved from source file headers into CREDITS.
4735 * Source file headers have been made more standard.
4736 * The CASE macro now compiles without complaining even when it has
4739 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4741 * (Note that the way that the PCL macroexpansions were rewritten
4742 to accommodate the change in DEFGENERIC below breaks binary
4743 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4744 not run under sbcl-0.6.2. Once we get out of alpha releases,
4745 i.e. hit release 1.0.0, we'll probably try to maintain binary
4746 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4747 and sbcl-1.4.4. Until then, however, it might be fairly common
4748 for maintenance releases to break binary compatibility.)
4749 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4751 * The reporting of unhandled signals has been changed to print some
4752 explanatory text as well as the report form. (Previously only
4753 the report form was printed.)
4754 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4755 it defines, so that the compiler no longer issues undefined function
4756 warnings for compiled-but-not-yet-loaded generic functions.
4757 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4758 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4759 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4760 section of the ANSI spec are supported.
4761 * The "" nickname for the "KEYWORD" package has been removed.
4762 The reader still handles symbol tokens which begin with a package marker
4763 as keywords, but it doesn't expose its mechanism for doing so in the
4764 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4765 * The system now issues STYLE-WARNINGs for contradictory TYPE
4766 proclamations. (Warnings for contradictory FTYPE proclamations would
4767 be nice too, but those can't be done usefully unless the type system
4768 is made smarter about FUNCTION types.)
4769 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4770 systematized, so that "*target-*.lisp is supposed to exist only on the
4771 target and imply that there's a related file which exists on the
4772 host, and *host-*.lisp is supposed to exist only on the host and imply
4773 that there's a related file which exists on the target. This involves a
4774 lot of renaming. Hopefully the acute confusion caused by the renaming
4775 will be justified by the reduction in chronic confusion..
4776 ** runtime-type.lisp -> early-target-type.lisp
4777 ** target-type.lisp -> late-target-type.lisp
4778 ** early-host-format.lisp -> early-format.lisp
4779 ** late-host-format.lisp -> late-format.lisp
4780 ** host-error.lisp -> misc-error.lisp
4781 ** early-error.lisp -> early-target-error.lisp
4782 ** late-error.lisp -> late-target-error.lisp
4783 ** host-defboot.lisp -> early-defboot.lisp
4784 ** code/misc.lisp -> code/target-misc.lisp
4785 ** code/host-misc.lisp -> code/misc.lisp
4786 ** code/numbers.lisp -> code/target-numbers.lisp
4787 ** code/early-numbers.lisp -> numbers.lisp
4788 ** early-host-type.lisp -> early-type.lisp
4789 ** late-host-type.lisp -> late-type.lisp
4790 ** host-typep.lisp -> typep.lisp
4791 ** load.lisp -> target-load.lisp
4792 ** host-load.lisp -> load.lisp
4793 ** host-disassem.lisp -> disassem.lisp
4794 ** host-insts.lisp -> insts.lisp
4795 ** byte-comp.lisp -> target-byte-comp.lisp
4796 ** host-byte-comp.lisp -> byte-comp.lisp
4797 ** host-signal.lisp -> signal.lisp
4798 ** host-defstruct.lisp -> defstruct.lisp
4799 ** late-target-type.lisp -> deftypes-for-target.lisp
4800 Furthermore, several other previously target-only files foo.lisp (e.g.
4801 hash-table.lisp and random.lisp) have been split into a target-and-host
4802 foo.lisp file and a target-only target-foo.lisp file, with their key type
4803 definitions in the target-and-host part, so that the cross-compiler will
4804 know more about target types.
4805 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4806 gone away. In their place are various *BACKEND-FOO* variables
4807 corresponding to the slots of the old structure.
4808 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4809 into the target SBCL has been fixed.
4810 * The chill.lisp system for loading cold code into a running SBCL
4812 * Support for the CMU CL "scavenger hook" extension has been removed.
4813 (It was undocumented and unused in the CMU CL sources that SBCL was
4814 derived from, and stale in sbcl-0.6.1.)
4815 * Various errors in the cross-compiler type system were detected
4816 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4817 (enabling various consistency checks). Many of them were fixed,
4818 but some hard problems remain, so the compiler is back to
4819 running without *TYPE-SYSTEM-INITIALIZED* for now.
4820 * As part of the cross-compiler type system cleanup, I implemented
4821 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4822 * I have started adding UNCROSS calls throughout the type system
4823 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4824 on cross-compiler input files will be able to go away, and various
4826 * CONSTANTP now returns true for quoted forms (as explicitly required
4829 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4831 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4832 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4833 (MAKE-LIST -1). In the longer term, it ought to become true
4834 that declarations are assertions even at SAFETY 1. For now, it's not
4835 quite true even at SAFETY 3, but it's at least more nearly true..
4836 (Note that this change seems to increases the size of the system by
4837 O(5%) and to decrease the speed of the compiler by 20% or more.)
4838 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4839 for the problem of printing dozens of lines of distracting information
4840 about low-level system machinery as part of the top stack frame
4841 on entry to the debugger when an undefined function was called.
4842 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4843 is not reset to COMMON-LISP-USER.
4844 * Compilation of stuff related to dyncount.lisp has been made conditional
4845 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4846 smaller. The various dyncount-related symbols have been moved into
4847 a new "SB-DYNCOUNT" package.
4848 * tty-inspect.lisp has been renamed to inspect.lisp.
4849 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4850 feature has gone away. (When we eventually port to other flavors of
4851 libc and/or Unix, we'll try to make the differences between flavors
4852 invisible at the user level.)
4853 * Various other *FEATURES* tags, and/or their associated conditionals,
4854 have been removed if obsolescent, or given better documentation, or
4855 sometimes given more-mnemonic names.
4857 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4859 * tidied up "make.sh" script
4860 * tidied up system directory structure
4861 * better "clean.sh" behavior
4862 * added doc/FOR-CMUCL-DEVELOPERS
4863 * many many small tweaks to output format, e.g. removing possibly-confusing
4864 trailing #\. character in DESCRIBE-INSTANCE
4865 * (EQUALP #\A 'A) no longer signals an error.
4866 * new hashing code, including EQUALP hashing
4867 * tidied up Lisp initialization and toplevel
4868 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4869 * command line argument processing
4870 * added POSIX-GETENV function to deal with Unix-ish environment variables
4871 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4872 terminating SBCL on EOF
4873 * non-verbose GC by default
4874 * There is no more "sbcl" shell script; the sbcl file is now the C
4875 runtime executable (just like CMU CL).
4876 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4878 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4879 symbol and package information as Lisp native symbol and package objects
4880 instead of strings naming symbols and strings naming packages. This way,
4881 whenever packages are renamed (as in warm init), debug information is
4882 transformed along with everything else.
4883 * tweaked the optimization policy declarations which control the building
4884 of SBCL itself. Now, among other things, the system no longer saves
4885 source location debugging information. (This helps two problems at once
4886 by reducing SBCL size and by keeping SBCL from trying to look for its
4887 sources -- which may not exist -- when reporting errors.)
4888 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4889 debugging and testing purposes
4890 * cleaned up printing, making the printer call PRINT-OBJECT for
4891 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4892 methods, giving nearly-ANSI behavior
4893 * converted almost all special variables to use *FOO* naming convention
4894 * deleted PARSE-TIME functionality, since it can be done portably
4895 * moved some files out of cold init into warm init
4896 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4898 * regularized formatting of source files
4899 * added an install.sh script
4900 * fixed ridiculous memory usage of cross-compiler by making
4901 compiler/alloc.lisp not try to do pooling unless it can hook
4902 itself into the GC of the cross-compilation host. Now the system
4903 builds nicely on my old laptop.
4904 * added :SB-ALLOC in target-features.lisp-expr
4905 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4906 was not implemented)
4907 * re-did condition handling and note reporting in the compiler. Notes
4908 are no longer handled by signalling conditions. Style warnings
4909 and warnings are handled more correctly and reported in such a way
4910 that it's easy to find one or the other in your output (so that you
4911 can e.g. figure out which of many problems caused COMPILE-FILE to
4913 * changed the severity of several compiler warnings from full WARNING
4914 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4915 compiler note reporting so that it doesn't use the condition system
4916 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4917 COMPILE-FILE command)
4918 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4919 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4920 no longer supported, since their implementation was deeply intertwingled
4921 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4922 * removed bogus "support" for compiler macros named (SETF FOO), and
4923 removed the compiler macro for SETF INFO (but only after making a fool
4924 of myself on the cmucl-imp mailing list by posting a bogus patch for
4925 DEFINE-COMPILER-MACRO..)
4926 * Compiled files containing forms which have side effects on the Lisp
4927 reader (such as DEFPACKAGE forms) are now handled more correctly.
4928 (Compiler queuing of top level lambdas has been suppressed by setting
4929 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4930 * deleted various currently-unused source files, e.g. gengc.lisp. They
4931 may be added back at some point e.g. when porting to other architectures,
4932 but until they are it's distracting to distribute them and to try to
4934 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4935 there were so many of them they're just distractions, and UNCROSS is
4936 known to be able to handle the current sources
4937 * moved PROFILE functionality into TRACE, so that it will be clear
4938 how the wrapping and unwrapping of functions when you profile them
4939 interacts with the wrapping and unwrapping of functions when you
4940 trace them. (Actually, the functionality isn't there yet, but at least
4941 the interface specification is there. Hopefully, the functionality will
4942 arrive with some future maintenance release.)
4943 * removed host-oops.lisp
4944 * changed signature of QUIT function to allow UNIX-CODE argument
4945 * fixed READ-SEQUENCE bug
4946 * tweaked verbose GC output so that it looks more like the progress
4947 output that ANSI specifies for functions like LOAD
4948 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4949 * added <http://sbcl.sourceforge.com> to the banner information printed by