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: lexical type declarations are now correctly reported by
8 SB-CLTL2. (reported by Larry D'Anna)
9 * bug fix: STRING-TO-OCTETS did not handle :START properly when
10 using UTF-8 as external format. (thanks to Luis Oliveira)
11 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
12 are signalled correctly. (thanks to Stas Boukarev)
13 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
14 designator. (thanks to Tobias Rittweiler)
15 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
16 designator, and returns T instead of the function. (thanks to
18 * bug fix: direct superclasses of STANDARD-CLASS and
19 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
20 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
21 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
22 when no class with the named slot yet exists no longer causes a
23 compile-time style-warning.
25 changes in sbcl-1.0.23 relative to 1.0.22:
26 * enhancement: when disassembling method functions, disassembly
27 for the associated fast function is also produced.
28 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
30 * optimization: printing with *PRINT-PRETTY* true is now more
31 efficient as long as the object being printed doesn't require
32 special handling by the pretty printer.
33 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
34 now interact correctly with type declarations.
35 * partial bug fix: PCL detects infinite recursion during wrapper
36 validation. (thanks to Attila Lendvai)
37 * bug fix: #426; nested function calls are inlined properly.
38 Previously if FOO was an inline function, in calls of the form
39 (FOO (FOO ...)) the outer call was not inlined.
40 * bug fix: long long arguments passed in registers to alien
41 functions on PowerPC Linux and NetBSD are now handled correctly
42 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
44 changes in sbcl-1.0.22 relative to 1.0.21:
45 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
46 for the shared object in the current directory, but passes the native
47 namestring of the designated pathname to the operation system's shared
48 object loading function as-it.
49 * minor incompatible change: --disable-debugger toplevel option now takes
50 effect before processing of initialization files and --eval or --load
52 * new feature: new commandline argument: --script, which supports
53 shebang lines. See documentation for details. (based on work by
55 * new feature: SAVE-LISP-AND-DIE can save current values of
56 --dynamic-space-size and --control-stack-size in the executable core,
57 causing it to skip normal runtime option processing. See documentation
58 for details. (thanks to Zach Beane)
59 * enhancement: inoccous calls to EVAL or generic functions dispatching
60 on subclasses of eg. STREAM no longer cause compiler notes to appear.
61 * enhancement: the system no longer resignals errors from --load and
62 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
63 associated with the original error to be lost. (thanks to Ariel
65 * enhancement: :DONT-SAVE keyword argument has been added to
66 LOAD-SHARED-OBJECT for controlling interaction with
67 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
68 the effects of an earlier LOAD-SHARED-OBJECT call.
69 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
70 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
71 provided. (reported by Cedric St-Jean)
72 * bug fix: circularity handling in the reader did not treat raw
73 structure slots correctly. (reported by Cedric St-Jean)
74 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
75 file descriptors when there were none.
76 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
77 was broken. (reporteed by Willem Broekema)
78 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
79 pathnames without a directory.
80 * bug fix: COMPILE-FILE did not warn about undefined variable
81 references at toplevel, and LOAD of the resulting fasl did
83 * bug fix: functions with non-required arguments used to end up with
84 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
85 * bug fix: redefining a function with non-required arguments didn't
86 update the system's knowledge about its call signature properly.
87 * bug fix: fixed #431; incompatible alien record type redefinitions
88 are detected and handled. (reported by Neil Haven)
89 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
90 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
92 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
93 after alien stack frames.
94 * bug fix: strings passed to mk{s,d}temp lacked null termination
96 changes in sbcl-1.0.21 relative to 1.0.20:
97 * new feature: the compiler is able to track the effective type of a
98 generic function across method addition and removal.
99 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
100 appropriately typed structure slots without locking.
101 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
102 information like those gathered by TIME using a programming-friendly
104 * new feature: TIME reports time taken even if the form performs a
105 non-local transfer of control.
106 * enhancement: reduced conservativism on GENCGC platforms: on
107 average 45% less pages pinned (measured from SBCL self build).
108 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
109 mutate constant symbols or violate declaimed type of the symbol.
110 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
111 sleeping on the semaphore in heavily contested semaphores.
112 * bug fix: semaphores and condition variables were not interrupt
114 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
115 owned by other threads anymore.
116 * bug fix: FIND on lists called KEY outside the specified
117 subsequence. (reported by budden)
118 * bug fix: LOG doesn't use single-float intermediate results when
119 given mixed integer and double-float arguments, leading to better
120 precision. (reported by Bob Felts)
121 * bug fix: LOG with base zero returned values of inconsistent type.
123 changes in sbcl-1.0.20 relative to 1.0.19:
124 * minor incompatible change: OPTIMIZE qualities
125 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
126 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
127 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
128 * documentation: some slot access efficiency guidelines have been
129 added to the user manual.
130 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
131 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
132 as ASSOC and MEMEBER.
133 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
134 to more efficient EQ-comparison versions more often.
135 * optimization: enhanced derivation of DOLIST iteration variable type
137 * optimization: constant folding of simple (LIST ...) forms as DOLIST
139 * optimization: runtime lookup of function definitions can be
140 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
141 * optimization: compiler is able to derive the return type of
142 (AREF (THE STRING X) Y) as being CHARACTER.
143 * optimization: CLRHASH on empty hash-tables no longer does pointless
144 work. (thanks to Alec Berryman)
145 * optimization: REPLACE deftransforms don't punt when :START1 or
147 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
148 no longer emits a code deletion note. (reported by Andrew
150 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
151 functions with an odd number of &OPTIONAL arguments, a &REST
152 argument, and one or more &KEY arguments at the call site.
153 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
154 arguments appeared at call sites as well.
155 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
156 READ-LINE &co can no longer read from them afterwards. (reported
158 * bug fix: fixed #427: unused local aliens no longer cause compiler
159 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
161 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
162 alien-stack leakage. (reported by Andy Hefner)
163 * bug fix: PROGV signals an error when an attempt to violate declared
164 type of a variable or bind a constant is made.
165 * bug fix: SET signals an error when an attempt to violate declared
166 type of a variable is made.
167 * bug fix: restart computation during the execution of a restart
168 test function no longer causes infinite recursion. (reported by
170 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
171 signals an error. (thanks to Pierre Mai)
172 * bug fix: EXPORT left symbol unexported in conflict situations.
173 (thanks to Michael Weber)
174 * bug fix: correctly handle name conflicts involving CL:NIL.
175 (thanks to Michael Weber)
176 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
177 conflicts arising from USEing package with conflicting symbols
178 correctly. (thanks to Michael Weber)
180 changes in sbcl-1.0.19 relative to 1.0.18:
181 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
182 warnings that go otherwise unhandled will be muffled if they are
183 of the type that's the value of this variable.
184 * optimization: stack allocation is slightly more efficient on x86
186 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
187 where a raw slot always is initialized using the initform whose
188 type is not know sufficiently well a compile-time are now compiled
189 correctly. (reported by John Morrison)
190 * bug fix: compiler no longer makes erronous assumptions in the
191 presense of non-foldable SATISFIES types.
192 * bug fix: stack analysis missed cleanups of dynamic-extent
193 arguments in non-let-converted calls to local functions.
194 * improvements to the Windows port:
195 ** adjusted address spaces for building on both Win32 and
196 Win64. (thanks for John Connors)
197 * fixed some bugs revealed by Paul Dietz' test suite:
198 ** interval arithmetic during type derivation used inexact integer
199 to single-float coercions.
200 ** arithmetic operations involving large integers and single
201 floats give the same results in compiled and interpreted code.
202 ** deriving the result type of COERCE no longer signals an error
203 if the derived type of the second argument is a MEMBER type
204 containing invalid type specifiers.
205 ** ADJOIN with constant NIL as second argument works correctly.
206 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
208 changes in sbcl-1.0.18 relative to 1.0.17:
209 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
210 profiles only the current thread.
211 * minor incompatible change: changes to SYMBOL-VALUE of constants
212 defined with DEFCONSTANT now signal an error.
213 * enhancement: SB-SPROF now has support for wallclock profiling,
214 and is also able to profile specific threads. REPORT output
215 has also additional sorting options.
216 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
218 * optimization: structure allocation has been improved
219 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
220 ** out of line constructors are ~10% faster.
221 ** inline constructors are ~15% faster.
222 ** inline constructors are capable of dynamic extent allocation
223 (generally on x86 and x86-64, in some cases on other platforms
225 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
227 * optimization: file compiler is now able to coalesce non-circular
228 lists, non-base strings, and bit-vectors. Additionally, constants
229 are never referenced through SYMBOL-VALUE at runtime.
230 * optimization: code defining methods on PRINT-OBJECT (and other
231 generic functions in the COMMON-LISP package) now loads faster.
232 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
234 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
235 fasl is now deleted. (reported by Attila Lendvai)
236 * bug fix: READ-LINE always returned NIL for the last line in files.
237 (reported by Yoshinori Tahara)
238 * bug fix: more accurate disassembly annotations of foreign function
239 calls. (thanks to Andy Hefner)
240 * bug fix: trimming non-simple strings and non-string string
241 designators when the there is nothing to trim works properly.
242 (thanks to James Knight)
243 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
244 (thanks to Travis Cross)
245 * fixed some bugs revealed by Paul Dietz' test suite:
246 ** NIL is a valid function name (regression at 1.0.13.38)
247 ** FILL on lists was missing its return value (regression at 1.0.12.27)
248 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
249 fill pointers properly (regression at 1.0.12.23)
250 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
251 displacement indices properly (regression at 1.0.12.23)
253 changes in sbcl-1.0.17 relative to 1.0.16:
254 * temporary regression: user code can no longer allocate closure
255 variable storage on stack, due to bug 419 without explicitly
256 requesting it. Please consult sbcl-devel for advice if you need to
257 use this feature in the meanwhile.
258 * new feature: runtime argument --control-stack-size can be used to
259 adjust thread default control stack size.
260 * enhancement: improved TIME output
261 ** all times are reported using the measured accuracy (milliseconds
262 for real and GC times, microseconds for everything else.)
263 ** processor cycle counts on x86 and x86-64.
264 ** interpreted forms are counted for both evaluator modes.
265 ** number of lambdas converted by the compiler is reported.
266 ** CPU percentage report (computed from real and total run time.)
267 ** more comprehensive run time reporting, using a condenced format
268 ** interperted form, lambda, and page fault counts are omitted
270 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
272 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
273 * optimization: two argument forms of LAST are upto ~10% faster
274 in normal SPEED policies.
275 * optimization: NCONC no longer needs to heap cons its &REST list
276 in normal SPEED policies.
277 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
279 * bug fix: UNION and NUNION work with :TEST-NOT once more,
280 regression since 1.0.9.1. (thanks to Eric Marsden)
281 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
282 since 1.0.15.36. (thanks to Paul Khuong)
283 * bug fix: LAST when always returned the whole list when given a bignum
284 as the second argument.
285 * bug fix: dynamic extent allocation of nested lists and vectors
286 could leak to otherwise accessible parts.
287 * bug fix: invalid optimization of heap-allocated alien variable
289 * bug fix: fasl header checking is less vulnerable to different
290 platform word lengths.
291 * bug fix: more correct assembler syntax for GNU binutils
292 2.18.50.0.4 support. (thanks to Marijn Schouten)
293 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
295 * bug fix: the fopcompiler can handle LOCALLY forms (with no
296 declarations) successfully. (reported by Attila Lendvai)
298 changes in sbcl-1.0.16 relative to 1.0.15:
299 * minor incompatible change: revert the changes to sb-posix's error
300 signaling added in 1.0.14.
301 * minor incompatible change: change PROBE-FILE back to returning
302 NIL whenever we can't get a truename, as was the case before 1.0.14.
303 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
304 inherits from ERROR instead of just CONDITION.
305 * new feature: SB-INTROSPECT can provide source locations for instances
306 as well. (thanks to Tobias Rittweiler)
307 * optimization: binding special variables now generates smaller code
308 on threaded platforms.
309 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
310 and cases where no :TEST is given but the compiler can infer that
311 the element to search is of type (OR FIXNUM (NOT NUMBER)).
312 * optimization: better LOGNOT on fixnums.
313 * optimization: modular arithmetic for a particular requested width
314 is implemented using a tagged representation unless a better
315 representation is available.
316 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
317 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
318 for wellformedness and returns a specialized vector. (reported by
319 Francois-Rene Rideau)
320 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
321 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
322 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
323 unscheduling timer at the same time as another timer fires.
324 * bug fix: don't reschedule timers for dead threads.
325 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
326 * bug fix: copying output from RUN-PROGRAM to a stream signalled
327 bogus errors if select() was interrupted.
328 * enhancement: add support for fcntl's struct flock to SB-POSIX.
330 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
331 * enhancement: cleaner backtraces for interactive interrupts, as
332 well as other cases where the interesting frames used to be
333 obscured by interrupt handling frames.
334 * enhancement: untracing a whole package using (UNTRACE "FOO") is
335 now supported, and tracing a whole package using (TRACE "FOO") now
336 traces SETF-functions as well.
337 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
338 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
339 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
340 * unreadably printed representation of hash-tables now includes
342 * bug fix: partially fixed #188: type propagation from assignments
343 is now more efficient.
344 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
345 'DOUBLE-FLOAT) are not flushable.
346 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
347 full address of the object, and none of the tag bits.
348 * bug fix: readably printing hash-tables now respects other printer
349 control variables. (reported by Cedric St-Jean)
350 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
351 keyword with MAKE-HASH-TABLE.
352 * bug fix: export SB-POSIX:MKSTEMP.
353 * bug fix: SORT was not interrupt safe.
354 * bug fix: XREF accounts for the last node of each basic-block as
356 * bug fix: MAKE-INSTANCE optimizations interacted badly with
357 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
358 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
359 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
360 create obsolete instances in the case of redefinition or
361 obsoletion of a superclass. (thanks to Andy Hefner)
362 * bug fix: Support for the Alpha architecture has been revived; it had
363 suffered somewhat from lack of maintenance since sbcl-1.0.
364 * improvements to the Windows port:
365 ** The system detects the codepage to use at startup, instead of
366 using the value from the saved core. (thanks to Kei Suzuki)
368 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
369 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
370 (see documentation for details.)
371 * revived support for OpenBSD (contributed by Josh Elsasser)
372 * partially fixed bug #108: ROOM no longer suffers from occasional
373 (AVER (SAP= CURRENT END)) failures.
374 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
375 bodies no longer cause a WARNING to be signalled. (reported by
377 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
378 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
379 the bug in TRUNCATE.) (reported by Michael Weber)
380 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
381 no samples. (reported by Andy Hefner)
382 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
383 no longer appear as (NIL ...) frames in backtraces.
384 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
385 is now actually exported from SB-EXT as documented. (reported by
387 * bug fix: sb-aclrepl now correctly understands how to inspect
388 single-floats on 64-bit platforms where single-floats are not boxed.
389 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
390 yet been finalized. (reported by Levente Meszaros)
391 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
392 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
393 SBCL-specific optimize qualities.
395 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
396 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
397 an executable in the search path, and does so in the child
398 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
399 been removed; it can be found in the CVS history, for somebody who
400 needs that search behavior (see the manual).
401 * minor incompatible change: compiler policy re. weakening type
402 checks has changed: now type checks are weakened only if SAFETY < 2
404 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
405 unparsing of directory pathnames as files. Analogously,
406 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
407 filename to parse into a directory pathname.
408 * enhancement: implicit generic function creation now signals a
409 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
410 users can bind handlers for and muffle around calls to LOAD.
411 * enhancement: RUN-PROGRAM allows unicode arguments and environments
412 to be used (using the default stream external format), and allows
413 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
414 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
415 strings and vectors whose element-type or simplicity is not fully
416 known at compile-time.
417 * optimization: STRING-TRIM and related functions no longer allocate
418 a new string when no trimming needs to be performed. These functions
419 are also faster than before when the input string has been declared
421 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
422 * optimization: READ-LINE is significantly faster for files containing
424 * optimization: non-open coded uses of character comparison operators
425 (e.g. char=) no longer cons when called with more than one parameter
426 on platforms supporting dynamic-extent allocation.
427 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
428 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
429 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
431 * bug fix: some sequence functions elided bounds checking when
433 * bug fix: too liberal weakening of union-type checks when SPEED >
435 * bug fix: more bogus fixnum declarations in ROOM implementation
438 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
439 * new feature: MAKE-HASH-TABLE now experimentally accepts a
440 :SYNCHRONIZED argument, which makes the hash-table safe for
441 concurrent accesses (but not iteration.) See also:
442 SB-EXT:WITH-LOCKED-HASH-TABLE, and
443 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
444 * optimization: CONCATENATE on strings is an order of magnitude faster
445 in code compiled with (> SPEED SPACE).
446 * optimization: SUBSEQ is ~50% faster on lists.
447 * bug fix: bug 417 fixed -- source location reporting is now more robust.
448 * bug fix: SUBSEQ on a list will now correctly signal an error if if
449 END is smaller then START.
450 * bug fix: SB-PROFILE will no longer report extra consing for nested
451 calls to profiled functions.
452 * bug fix: ROOM implementation had bogus fixnum declarations which
453 could cause type-errors when calling ROOM on large images.
454 * bug fix: if file compilation is aborted, the partial fasl is now
455 deleted, and COMPILE-FILE returns NIL as the primary value.
456 * bug fix: number of thread safety issues relating to SBCL's internal
457 hash-table usage have been fixed.
458 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
459 be returned from its body when the values were being returned
460 using unknown-values return convection and the W-P-O was wrapped
461 inside an UNWIND-PROTECT.
462 * bug fix: sb-posix should now compile again under Windows, enabling
465 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
466 * incompatible change: hash-table accessor functions are no longer
467 automatically protected by locks. Concurrent accesses on the same hash-table
468 from multiple threads can give inconsistent results or even corrupt the
469 hash-table completely. Multi-threaded applications should do their own
470 locking at the correct granularity. In the current implementation it is
471 still safe to have multiple readers access the same table, but it's not
472 guaranteed that this property will be maintained in future releases.
473 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
474 and will signal an error at runtime.
475 * enhancement: SB-THREAD package now exports a semaphore interface.
476 * enhancement: CONS can now stack-allocate on x86 and
477 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
479 * enhancement: nested lists can now be stack allocated on
480 platforms providing stack allocation support.
481 * enhancement: dynamic-extent support has been extended to support
482 cases where there are multiple possible sources for the stack
484 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
485 if the mutex is uncontested on Linux.
486 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
487 as specified by the CLHS. (thanks to Tobias Rittweiler)
488 * bug fix: NaN comparison now works on x86-64.
489 * bug fix: CLOSE :ABORT T on a stream with pending output now
491 * bug fix: instances of non-standard metaclasses using standard
492 instance structure protocol sometimes missed the slot type checks
494 * bug fix: known functions can be inlined in high-debug code.
496 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
497 * minor incompatible change: the MSI installer on Windows no longer
498 associates .lisp and .fasl files with the installed SBCL.
499 * minor incompatible change: :UNIX is no longer present in *FEATURES*
500 on Windows. (thanks to Luis Oliviera)
501 * new feature: SB-CLTL2 contrib module now implements
502 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
503 * optimization: scavenging weak pointers is now more efficient,
504 requiring O(1) instead of O(N) per weak pointer to identify
505 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
506 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
507 method bodies using constant slot-names when the first argument is
508 a specializer parameter for the method.
509 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
510 names, when the class of the instance is a direct instance
511 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
512 as slow as the constant slot-name case.)
513 * optimization: member type construction is now O(N) instead
515 * optimization: UNION and NUNION are now O(N+M) for large
516 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
518 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
519 now more readable in environments like Slime which display it.
520 (thanks to Tobias C. Rittweiler)
521 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
522 was able to infer the correct argument type for the object on which
523 the CAS operation was being performed.
524 * bug fix: copy propagation interfered with parallel assignment
525 semantics in local calls. (reported by Paul Khuong)
526 * bug fix: the signed modular fixnum shift compiled to wrong code on
527 x86 and x86-64. (spotted by a slight modification to some of
530 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
531 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
532 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
533 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
535 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
536 and generic function now print the object identity for anonymous
537 instances. (thanks to Attila Lendvai)
538 * enhancement: as an extension to MOP, SBCL now supports SETF of
539 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
540 (thanks to Attila Lendvai)
541 * enhancement: sb-cover has an alternate annotation mode which puts
542 the form annotations at the car of the form, instead of annotating
543 it completely. The benefit of this mode is that it shows better
544 which forms were instrumented by the compiler.
545 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
546 by printer control variables. (reported by Dan Corkill)
547 * bug fix: system leaked memory when delayed output was performed by
548 the OS in smaller chunks then expected. (thanks to David Smith)
549 * bug fix: system leaked memory when file streams were not closed
551 * bug fix: large objects written to slow streams that were modified
552 after the write could end up with the modified state written to
553 the underlying file descriptor.
554 * bug fix: multiple threads operating in parallel on the same stream
555 could cause buffer-overflows.
556 * bug fix: source location information is stored correctly
557 (broken since 1.0.6). This bug would generally show up as the
558 Slime debugger highlighting the wrong form when the sldb-show-source
560 * bug fix: Branch forms are again annotated as branches in the sb-cover
562 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
563 on x86-64. (reported by Gregory Vanuxem)
564 * bug fix: EQUALP could return wrong results for structures with raw
565 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
566 word). (reported by Vjacheslav Fyodorov)
567 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
570 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
571 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
572 atomic compare-and-swap operations on threaded platforms.
573 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
574 allows assigning a global minimum value to optimization qualities
575 (overriding proclamations and declarations).
576 * enhancement: closed over variables can be stack-allocated on x86
578 * performance bug fix: GETHASH and (SETF GETHASH) are once again
580 * optimization: slot definition lookup is now O(1). This speeds up
581 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
582 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
583 * optimization: ASSOC and MEMBER can now be open-coded for all
584 combinations of keyword arguments when second argument is constant
585 and SPEED >= SPACE. In other cases a specialized version is
587 * bug fix: using obsoleted structure instances with TYPEP and
588 generic functions now signals a sensible error.
589 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
590 (reported by Kristoffer Kvello)
591 * bug fix: backtrace construction is now more careful when making
592 lisp-objects from pointers on the stack, to avoid creating bogus
593 objects that can be seen by the GC.
594 * bug fix: defaulting of values in contexts expecting more than 7
595 variables now works on x86-64. (reported by Christopher Laux)
596 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
598 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
599 as the property-list of a symbol.
600 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
601 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
602 situations requested, are once again file-compileable. (reported
605 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
606 * MOP improvement: support for user-defined subclasses of
607 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
608 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
609 the expansion of DEFMETHOD, is responsible for generating a form
610 which creates a list of specializers when evaluated. Additional
611 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
612 debugging and introspective support.
613 * minor incompatible change: the (unsupported) spinlock interface
614 has changed: free spinlock now has the value NIL, and a held spinlock
615 has the owning thread as its value.
616 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
617 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
619 * enhancement: name of a socket-stream is now "a socket" instead of
621 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
622 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
623 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
624 for generic functions. (Thanks to Tobias C. Rittweiler)
625 * optimization: bignum printing speed has been improved by 20-40%
626 (depending on the bignum size.)
627 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
629 * bug fix: the cache used by the CLOS to store precomputed effective
630 methods, slot offsets, and constant return values is now thread and
632 * bug fix: generic function dispatch function updating is now thread
633 and interrupt safe (in the sense that the known issues have been
635 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
636 * bug fix: interning EQL-specializers is now thread and interrupt safe.
637 * bug fix: asdf systems with dependencies to the SB-POSIX or
638 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
639 * bug fix: interrupt safety of applicable method computation has been
642 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
643 * new contrib: sb-cover, an experimental code coverage tool, is included
645 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
646 significantly faster.
647 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
648 produce more efficient code on x86-64 if the compiler can determine
649 that (+ INDEX <constant>) does not require a bounds check and FOO
650 has an element type at least 8 bits wide.
651 * enhancement: a new, experimental synchronous timeout facility is
652 provided. Refer to SB-SYS:WITH-DEADLINE for details.
653 * enhancement: when a symbol name conflict error arises, the
654 conflicting symbols are always printed with a package prefix.
655 (thanks to Kevin Reid)
656 * enhancement: stepping is now once again supported on the SPARC and
657 MIPS platforms. (It is also now more likely to work on CheneyGC
659 * enhancement: sb-sprof can now also track and report accurate call
661 * bug fixes: the treatment of non-standard subclasses of
662 SB-MOP:SPECIALIZER is more correct.
663 * incompatible change: PURIFY no longer copies the data from the
664 dynamic space into the static and read-only spaces on platforms
665 that use the generational garbage collector
666 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
668 * bug fix: GC race condition occasionally resulting in crashes with
669 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
671 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
673 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
674 a STYLE-WARNING to be signalled (regression from 1.0.4.)
675 * bug fix: an asynchronous interrupt could previously leave the
676 system running with GC inhibited.
677 * bug fix: a DECLARE form evaluated at top-level now causes an error
678 rather than silently (or verbosely) returning NIL.
679 * bug fix: trying to dissassemble functions compiled at high DEBUG could
680 result in a error being signalled due to source form lookup errors.
681 (reported by Peter Graves)
683 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
684 * incompatible change: removed writer methods for host-ent-name,
685 host-ent-addresses -- changing the values did not update the DNS
687 * minor incompatible change: changed experimental JOIN-THREAD interface
688 * documentation: the manual now lists reader and writer methods
689 in class slot documentation sections. (thanks to Richard M Kreuter)
690 * documentation: unwinding from asyncronous events has been
691 documented as unsafe.
692 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
693 in multithreaded application code.
694 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
695 platforms. (thanks to James Anderson for the optimization hint)
696 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
698 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
699 variants no longer cons.
700 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
701 their NOT- variants no longer cons.
702 * optimization: EQUAL hash tables no longer use SXHASH for objects
703 of all data types, but instead use an EQL hash for types for which
704 EQUAL is the same as EQL.
705 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
706 are significantly faster.
707 * optimization: new STRING-OUTPUT-STREAM implementation is much
708 faster for large outputs and conses 30% less on average.
709 * enhancement: XREF information is now collected for references made
710 to global variables using SYMBOL-VALUE and a constant argument.
711 * enhancement: SIGINT now causes a specific condition
712 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
713 * bug fix: FILE-POSITION used to signal an error in some cases where
714 ANSI requires it to return NIL.
715 * bug fix: ADJUST-ARRAY is now interrupt-safe.
716 * bug fix: adding and removing fd-handlers is now interrupt-safe.
717 * bug fix: inlined calls to C now ensure 16byte stack alignment on
719 * bug fix: bad type declaration in the CLOS implementation has
720 been fixed. (reported by James Anderson)
721 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
722 (thanks to Lutz Euler)
723 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
724 required by the CLHS. (reported by Samium Gromoff)
725 * bug fix: dead unbound variable references now signal an error.
726 (reported by Marco Monteiro)
727 * bug fix: / with an unused value was being deleted in safe code.
728 (thanks to Marco Monteiro and Kevin Reid)
729 * bug fix: number of characters that can be written onto a single
730 line in a file is unlimited.
731 * bug fix: some GC deadlocks caused by asynchronous interrupts have
732 been fixed by inhibiting interrupts for when GC is disabled.
733 * bug fix: some interrupt safety issues with GETHASH, (SETF
734 GETHASH), CLRHASH and REMHASH have been fixed.
735 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
736 specifier no longer causes infinite recursion.
737 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
738 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
739 * bug fix: an &environment argument with the correct variable information
740 is passed to macros that are expanded during byte compilation.
741 (reported by Samium Gromoff)
742 * bug fix: a logic error was causing the hash function for bignums to
743 have excessive amounts of collisions. (reported by Faré Rideau)
744 * bug fix: modifying the contents of an array could change the return
745 value of SXHASH on that array, which is only allowed for strings
746 and bit vectors. (bug introduced in 0.9.16)
747 * improvement: the x86-64/darwin port now passes all tests (except
748 for the debugger tests) but should still be considered
749 experimental until this is fixed.
750 * improvement: a style-warning is signaled for CASE (etc) clauses with
751 duplicate keys. (thanks to Kevin Reid)
752 * improvement: macos/x86 and macos/x86-64 now use mach exception
753 handlers for dealing with illegal instructions (for trapping and
754 error handling) and memory protection violations (for GC).
756 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
757 * new platform: experimental support for x86-64/darwin (MacOS).
758 * incompatible change: the thread-safe (on most platforms) getaddrinfo
759 and getnameinfo sockets functions are used instead of gethostbyaddr
760 and gethostbyname, on platforms where the newer functions are available.
761 As a result, the ALIASES field of HOST-ENT will always be NIL on these
763 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
764 don't print the startup banner, but behave as if --noinform was passed
765 as a command line argument. (thanks to Kevin Reid)
766 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
767 * optimization: code using alien values with undeclared types is much faster.
768 * optimization: the compiler is now able to open code SEARCH in more cases.
769 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
770 * bug fix: using standardized COMMON-LISP special variables as loop
771 variables no longer signals bogus package lock violations. (reported
773 * bug fix: declaring local loop variables to be of a range-limited type
774 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
775 (reported by Andras Simon)
776 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
777 bugs remain on x86-64.)
778 * bug fix: the #= and ## reader macros now interact reasonably with
779 funcallable instances.
780 * bug fix: type-checks for function arguments were compiled using the
781 compiler policy settings of the wrong lexical environment (in 1.0.2
783 * bug fix: SHADOW accepts characters as string designators, as required
784 by the spec (thanks to Eric Marsden)
785 * bug fix: fixed GC safety issues when foreign functions are called with
786 non-base strings as arguments
787 * bug fix: more consistent error output for fatal-compiler-warnings, like
789 * bug fix: functions with proper names were showing up as NIL in
790 backtraces (reported by Edi Weitz, regression in 1.0.2)
792 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
793 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
794 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
795 produce more efficient code on the x86 if the compiler can determine
796 that (+ INDEX <constant>) does not require a bounds check and FOO
797 has an element type at least 8 bits wide.
798 * bug fix: references to undefined variables are handled the same way
799 in toplevel forms as in the normal compiler
800 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
802 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
803 (thanks to Jon Buller)
804 * improvement: faster compilation times for complex functions
805 * improvement: added readlink support to SB-POSIX (thanks to Richard
808 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
809 * improvement: experimental support for mach exception handling on
810 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
812 * improvement: support for GBK external format.
813 (thanks to Chun Tian (binghe))
814 * improvement: the debugger now displays variables that have been closed
815 over, in code compiled with (DEBUG 2) or higher
816 * improvement: support for executable cores on NetBSD (thanks to
818 * new feature: added a RESTART-FRAME debugger command
819 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
820 be used to provide an implementation for FILE-POSITION on Gray streams
821 (thanks to Eric Marsden)
822 * new feature: add syslog, openlog and closelog support to SB-POSIX
823 (thanks to Richard Kreuter)
824 * optimization: the function call overhead in code compiled with
825 a high DEBUG optimization setting is significantly
826 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
827 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
828 (thanks to Tony Martinez)
829 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
830 evaluated once (reported by Kevin Reid)
831 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
832 works again (thanks to Kilian Sprotte)
833 * bug fix: an error is signaled for tagbodies with duplicate tags
834 (thanks to Stephen Wilson)
835 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
836 * bug fix: Win32 port can now handle foreign code unwinding Lisp
837 stack frames from alien callbacks.
838 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
839 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
840 65k pages (thanks to David Woodhouse)
841 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
843 changes in sbcl-1.0.1 relative to sbcl-1.0:
844 * new platform: FreeBSD/x86-64, including support for threading.
845 * new feature: the compiler stores cross-referencing information
846 about function calls (who-calls), macroexpansion (who-macroexpands)
847 and special variables (who-binds, who-sets, who-references) for code
848 compiled with (< SPACE 3). This information is available through the
849 sb-introspect contrib.
850 * new feature: users may subclass SEQUENCE, and have instances of
851 these classes interoperate with standard Common Lisp functions if
852 a number of methods are defined. (This feature is experimental
853 and the interface subject to change based on feedback from SBCL
854 users and the general community)
855 * improvement: sb-sprof traces call stacks to an arbitrary depth on
856 x86/x86-64, rather than the previous fixed depth of 8
857 * improvement: another pthread back-end of mutex "pthread-futex".
858 * bug fix: non-ascii command-line arguments are processed correctly
859 (thanks to Yaroslav Kavenchuk)
860 * bug fix: non-required arguments were not passed correctly when a method
861 defined using DEFMETHOD was called from a mop-generated method using
862 CALL-NEXT-METHOD (reported by Pascal Costanza)
863 * bug fix: recursion is now permitted in accessors through
864 SLOT-UNBOUND. (reported by Pascal Costanza)
865 * bug fix: an error was signaled at startup if the HOME environment
866 variable was defined, but had an empty value (reported by Peter Van Eynde)
867 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
868 signal a PROGRAM-ERROR, not a BUG.
869 * bug fix: SB-POSIX:READDIR works when built with large file support.
870 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
872 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
873 for better automatic indentation support. (thanks to Matt Pillsbury)
874 * optimization: loading generic functions no longer takes O(n^2) time,
875 proportional to the amount of methods in the generic function
876 (reported by Todd Sabin and Jeremy Brown)
877 * optimization: the FIND and POSITION family of sequence functions
878 are significantly faster on arrays whose element types have been
880 * improvements to the Windows port:
881 ** Intermittent heap corruption problems have been fixed. (thanks
882 to Alastair Bridgewater)
883 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
885 ** Lisp is able to unwind foreign exception frames from alien
886 callbacks. (thanks to Alastair Bridgewater)
888 changes in sbcl-1.0 relative to sbcl-0.9.18:
889 * improvement: experimental support for threading on FreeBSD/x86.
890 (thanks to NIIMI Satoshi)
891 * improvement: runtime option --dynamic-space-size can be used
892 to set the size of the dynamic space reserved on startup.
893 * improvement: floating point modes in effect are now saved in
894 core, and restored on startup.
895 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
896 startup, not time since first call to GET-INTERNAL-REAL-TIME.
897 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
898 threads are not running after *SAVE-HOOKS* have run.
899 * improvement: writes to CLOS instance slots are type-checked in code
900 compiled with (SAFETY 3)
901 * improvement: floating-point exception handling on FreeBSD (thanks to
903 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
904 (thanks to Zach Beane)
905 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
907 * improvement: added support for the Shift-JIS external format.
908 (contributed by NIIMI Satoshi)
909 * improvement: callbacks are supported on Linux/PPC. (thanks to
911 * bug fix: compiler bug triggered by a (non-standard) VALUES
912 declaration in a LET* was fixed. (reported by Kaersten Poeck)
913 * bug fix: file compiler no longer confuses validated and already
914 dumped structurres. (reported by Kaersten Poeck)
915 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
916 fill-pointer signals a type-error as required. (thanks to
918 * bug fix: disassemly of funcallable instances works.
919 * bug fix: single stepping on PPC.
920 * bug fix: fix thread-safety problems in the type system (generally
921 manifesting as nonsensical errors like "STRING is a bad type specifier
922 for sequences" or "The value 1 is not of type FIXNUM")
923 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
924 (reported by Josip Gracin)
925 * bug fix: an error is signaled for attempts to displace arrays with
926 incompatible element types (thanks to Mario Mommer)
927 * bug fix: more correct handling of wide characters in debug info
928 (bug reported by Attila Lendvai and fixed by Juho Snellman)
929 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
930 and don't cause extra consing
931 * optimization: MAP and MAP-INTO are significantly faster on vectors
932 whose elements types have been declared.
933 * Improvements to SB-SPROF:
934 ** Support for allocation profiling
935 ** Reduced profiling overhead, especially for long profiling runs
936 * Improvements to the Windows port:
937 ** floating point exceptions are now reported correctly.
938 ** stack exhaustion detection works partially.
939 ** more accurate GET-INTERNAL-REAL-TIME.
940 ** better RUN-PROGRAM behaviour in case of errors in the child
942 ** PROBE-FILE now simplifies pathnames correctly.
943 ** DIRECTORY now works correctly with :WILD-INFERIORS.
944 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
945 1st 1970 (although time timezone data will be unreliable).
946 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
948 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
949 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
950 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
952 * bug fix: two potential GC deadlocks affecting threaded builds.
953 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
954 returns T (reported by Anton Kazennikov)
955 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
956 with non-variable places
957 * bug fix: remove a race condition in the setting of
958 funcallable-instance functions, this should make threaded CLOS
959 code more stable against memory faults.
960 * bug fix: corruption of specials when unbinding is interrupted by an
961 asynchronous unwind (reported by Hannu Koivisto)
962 * improvement: the debugger will now also display local variables that
963 are only used once, for code compiled with a DEBUG optimization quality
966 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
967 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
968 * incompatible change: External-format support for FFI calls. The
969 SB-ALIEN:C-STRING no longer implies an ASCII
970 external-format. Instead the string is subject to external-format
971 conversion. Additionally return values of type SB-ALIEN:C-STRING
972 are by default of type (SIMPLE-ARRAY CHARACTER), not
973 SIMPLE-BASE-STRING. For an alien type that behaves like the old
974 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
975 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
976 * incompatible change: SB-EXT package no longer contains the
977 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
978 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
980 * incompatible change: the single-stepper is no longer available
981 on Alpha, Mips and Sparc platforms.
982 * minor incompatible change: the direct superclasses of
983 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
984 not (STANDARD-OBJECT FUNCTION). This makes the
985 class-precedence-lists of GENERIC-FUNCTION and
986 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
988 * minor incompatible change: the default stream external format on
989 non-unicode SBCL is no longer detected from the locale, but is always
991 * new feature: Add a version of evaluator that uses an interpreter instead
992 of the compiler. EVAL still uses the compiler by default, to switch it
993 to use the interpreter, set the value of the variable
994 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
995 * minor incompatible change: the single-stepper REPL has been merged
996 with the normal debugger (see the "Stepping" heading of the debugger help
997 for more details). The debugger command STEP will no longer switch
998 to the single-stepper REPL.
999 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1000 for a type now works.
1001 * bug fix: loading of default sysinit file works. (thanks to Leonid
1003 * bug fix: better detection of circularities in the file-compiler.
1004 (reported by Marco Monteiro)
1005 * bug fix: the CL pathname functions now work with files that have
1006 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1007 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1008 systems with Unix98 pty semantics.
1009 * bug fix: ASDF-INSTALL will now work with bsd tar.
1010 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1012 * bug fix: timers expiring in dead threads no longer cause a
1013 type-error (reported by Paul "Nonny Mouse").
1014 * bug fix: thanks to more lightweight single-stepper instrumentation,
1015 code compiled with (DEBUG 3) will compile and execute significantly faster,
1016 and will have more accurate type-inferencing than before
1017 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1018 whose bindings are modified
1019 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1020 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1021 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1022 CL:SOFTWARE-VERSION with proper version
1024 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1025 * feature: implemented the READER-METHOD-CLASS and
1026 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1027 as specified by AMOP.
1028 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1030 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1031 (thanks to Lutz Euler)
1032 * optimization: hashing of general arrays and vectors has been
1033 improved. (reported by Any Fingerhut)
1034 * enhancement: SB-INTROSPECT is now able to find definitions of
1035 profiled functions. (thanks to Troels Henriksen)
1036 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1037 as well, allowing compiler-macros for SETF-functions to expand.
1038 * enhancement: step-instrumentation no longer wraps known
1039 single-value functions with multiple-value context, allowing
1040 better type inference.
1041 * fixed bug #337: use of MAKE-METHOD in method combination now works
1042 even in the presence of user-defined method classes. (reported by
1043 Bruno Haible and Pascal Costanza)
1044 * fixed bug #339(c): if there are applicable methods not part of any
1045 long-form method-combination group, call INVALID-METHOD-ERROR.
1046 (reported by Bruno Haible)
1047 * fixed bug #361: the :FUNCTION initarg in the protocol for
1048 initialization of methods can now be used to override
1049 internally-produced optimized functions. (reported by Bruno
1051 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1052 system-provided lambda expression no longer cause warnings about
1053 unbound #:|pv-table| symbols.
1054 * bug fix: improved the handling of type declarations and the
1055 detection of violations for keyword arguments with non-constant
1057 * bug fix: potentially erronous calls to PATHNAME and
1058 MERGE-PATHNAMES were being flushed in some cases.
1059 (reported by Richard Kreuter)
1060 * bug fix: compiled calls to TYPEP were mishandling obsolete
1061 instances. (reported by James Bielman and Attila Lendvai)
1062 * bug fix: format strings with ~> without matching ~< no longer
1063 trigger an AVER, but signal an understandable error instead.
1064 (reported by Antonio Martinez)
1065 * bug fix: specifying an output-file without a pathname-type for
1066 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1067 of input-file instead of "fasl". (reported by Robert Dodier)
1068 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1069 (reported by James Y Knight).
1070 * bug fix: compiler-macros-function did not consider the environment
1071 argument for shadowing by local functions.
1072 * bug fix: compiler-macros expansion was inhibited by local INLINE
1074 * bug fix: inline expansions of known functions were subject to
1075 step-instrumentation in high debug policies, leading to problems
1076 with type-inference.
1077 * bug fix: compiler failed to differentiate between different CONS
1078 types in some cases.
1079 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1080 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1081 * bug fix: #368: incorrect use of expressed vs. upgraded array
1083 * bug fix: #306a: more precise unions of array types.
1084 * thread-safety improvements:
1085 ** CONDITION-WAIT could return early on Linux, if the thread was
1086 interrupted and subsequently continued with SIGCONT.
1087 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1089 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1090 * added support for the ucs-2 external format. (contributed by Ivan
1092 * minor incompatible change: pretty printing of objects of type
1093 (cons symbol) is, in the default pprint-dispatch-table, now
1094 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1096 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1097 called later in a class's lifetime, possibly as late as when the
1098 first instance of the class is created. Previously,
1099 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1100 class became finalizeable.
1101 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1102 for multibyte external-format streams. (thanks to "vbzoli")
1103 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1104 with :ALLOCATION :CLASS inherited from superclasses of the
1106 * fixed bug: anonymous classes can now be created using the :NAME
1107 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1108 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1109 * fixed bug: core-files saved with :EXECUTABLE T can again be
1110 executed when SBCL_HOME isn't set. (reported by James Knight)
1111 * fixed bug: toplevel LOCALLY forms with declarations could
1112 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1113 * fixed bug: printing from several different threads using different
1114 values of *print-case* could cause invalid output, due to
1115 some internal special variables of the printer not being bound
1116 thread-locally (reported by Max Mikhanosha)
1117 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1118 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1119 (reported by Pascal Costanza)
1120 * fixed bug: FINALIZE-INHERITANCE is called from
1121 REINITIALIZE-INSTANCE on classes when the class has previously
1122 been finalized, as required by AMOP.
1123 * minor code generation optimizations:
1124 ** better register allocation in CLOS dispatching functions
1125 ** overflow detection when coercing signed bytes to fixnums on x86-64
1126 ** is now implemented with one IMUL instruction instead of three shifts
1127 ** more efficient bit-vector access on x86 and x86-64
1128 ** more efficient access to raw structure slots on x86 and x86-64
1129 * fixed some bugs revealed by Paul Dietz' test suite:
1130 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1131 return its argument.
1133 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1134 * feature: thread support on Solaris/x86, and experimental thread support
1136 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1138 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1139 default method for SLOT-UNBOUND.
1140 * minor incompatible change: prevent the user from specializing the
1141 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1142 somewhat counter to the intent of the protocol, I (CSR) think, and
1143 additionally it just doesn't work in SBCL as currently
1144 implemented, thanks to optimizations (that are always valid for
1145 the other three SLOT-VALUEish functions, but not for the setter).
1146 * minor incompatible change: the :SB-LDB feature is now enabled by
1147 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1148 the low-level debugger.
1149 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1150 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
1151 down to an SB-SYS:FD-STREAM, allowing direct communication in
1152 more cases. Temporary files and pipes are still used as a fallback
1154 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1155 on the non-reentrant C functions localtime(3) and gmtime(3).
1156 * bug fix: global optimization policy was not visible in LOCALLY and
1158 * bug fix: class objects can be used as specializers in methods.
1159 (reported by Pascal Costanza)
1160 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1161 with a type error. (reported by blitz_ on #lisp)
1162 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1163 failed with a type error. (reported by Pascal Bourguignon)
1164 * bug fix: merging pathnames against defaults with :DIRECTORY
1165 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1166 (reported by James Y Knight)
1167 * bug fix: saving large (>2GB) cores on x86-64 now works
1168 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1169 constant index and a (simple-array (signed-byte 32)) array
1170 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1171 error (patch by Robert J. Macomber)
1172 * feature: TIME now displays the amount of run-time spent in GC
1173 * bug fix: The debugger now does a better job of respecting
1174 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1175 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1176 workaround for bug 403.)
1177 * bug fix: floating point exception handling now works on FreeBSD
1178 (thanks to NIIMI Satoshi)
1179 * fixed some bugs revealed by Paul Dietz' test suite:
1180 ** MISC.641: LET-conversion were not supposed to work in late
1182 * improvements to the Win32/x86 port:
1183 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1184 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1186 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1187 * new feature: source path information is generated for macro-expansion
1188 errors for use in IDE's like Slime (thanks to Helmut Eller)
1189 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1190 * bug fix: compiler does not loop forever on an invalid type in
1192 * improvement: compilation of most CLOS applications is significantly
1194 * optimization: added a limited bytecode compiler for simple toplevel
1195 forms, speeding up compilation and FASL loading
1196 * bug fix: the statistical profiler now properly distinguishes anonymous
1199 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1200 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1201 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1202 into subclasses of the finalized class. Now user calls to
1203 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1204 system return before any subclasses are finalized.
1205 * minor incompatible change: The reader no longer ignores errors
1206 regarding non-existent packages in #+ and #- feature tests.
1207 * new feature: command line options --no-sysinit, --no-userinit to
1208 inhibit loading the corresponding init files
1209 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1210 for sending data through UDP sockets (thanks to François-René Rideau)
1211 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1212 error is signalled instead (thanks to François-René Rideau)
1213 * minor incompatible change: Error signalling behaviour of lexical
1214 operations violating package locks has changed slightly. Refer to
1215 documentation on package locks for details.
1216 * enhancement: EVAL can process IF-expressions without resorting to the
1218 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1219 constant-folded properly due to missing out-of-line functions.
1220 (reported by Mika Pihlajamäki)
1221 * bug fix: LISTEN sometimes returned T even in cases where no data was
1222 immediately available from the stream
1223 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1224 were reversed. (reported by Levente Mészáros)
1225 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1226 when given a vector displaced to an adjustable array. (reported
1228 * bug fix: derivation of float boundaries from numbers outside the
1229 appropriate float range (reported by John Wiseman)
1230 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1232 * bug fix: precomputing cache entries for generic functions with
1233 some subclasses of specializers as yet invalid does not attempt to
1234 fill a cache line with a negative offset. (reported by Levente
1236 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1237 allow condition class objects as arguments to DOCUMENTATION and
1238 (SETF DOCUMENTATION); only find and set documentation for
1239 structure names for the STRUCTURE doc-type. (suggested by Gary
1241 * improvements to the Win32/x86 port:
1242 ** (user-homedir-pathname) and default initialization file
1243 locations now know about the user's "Documents and Settings"
1244 directory (thanks to Yaroslav Kavenchuk)
1245 ** run-program is implemented (thanks to Mike Thomas)
1246 ** sockets support (thanks to Timothy Ritchey)
1247 ** better backtrace support (thanks to Alastair Bridgewater)
1248 ** sb-grovel supported
1249 ** asdf-install and sb-posix work somewhat
1250 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1251 * improvements to the Solaris/x86 port:
1252 ** works on Solaris 11/Solaris Express
1253 ** floating-point exception handling support
1254 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1255 * fixed some bugs revealed by Paul Dietz' test suite:
1256 ** REMOVE-METHOD returns its generic function argument even when
1257 the method is not one of the generic functions' methods.
1258 ** objects declared as MEMBER types can be admissible arguments to
1259 structure accessors.
1260 ** printing characters should simply be printed by the FORMAT ~:C
1262 ** compiler failure when compiling functions with hairy constant
1263 defaults for optional parameters.
1264 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1265 function, which is already optimized.
1267 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1268 * new platform: experimental support for SBCL x86/Darwin, including
1269 MacOS X 10.4.5 on Intel.
1270 * new feature: Unicode character names are now known to the system
1271 (through CHAR-NAME and NAME-CHAR).
1272 * new feature: the filesystem location of SBCL's core file is
1273 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1274 * minor incompatible change: the contrib modules SB-POSIX and
1275 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1276 this change is to make it easier to distribute
1277 location-independent binaries.
1278 * bug fix: as implied by AMOP, standardized classes no longer have
1279 slots named by external symbols of public packages. (reported by
1281 * optimization: calling functions via constant symbols -- as in
1282 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1283 via the function object as in (FUNCALL #'FOO).
1284 * optimization: on x86 and x86-64, the calling convention for the
1285 case of dealing with an unknown number of values has been altered
1286 to be friendlier to the prediction heuristics implemented,
1287 particularly with reference to CALL and RET pairing. (thanks to
1288 Alastair Bridgewater)
1289 * optimization: on x86, the code for access to thread-local symbol
1290 values and binding/unbinding of thread-local symbols is smaller.
1291 (thanks to Alastair Bridgewater)
1292 * enhancement: CONSTANTP is now able to determine constantness of
1293 more complex forms, including calls to constant-foldable standardized
1294 functions and some special forms beyond QUOTE.
1295 * fixed bug: occasional GC crashes on Solaris/x86
1296 * optimization: x86-64 supports stack allocation of results of simple
1297 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1298 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1299 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1300 (thanks to James Knight)
1301 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1302 by the standard (thanks to Stephen Compall)
1304 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1305 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1306 be used for bundling the runtime and the core file into one
1307 executable binary. This feature is not currently supported on all SBCL
1308 platforms. (thanks to James Bielman and NIIMI Satoshi)
1309 * new feature: a generational or ephemeral garbage collector is now
1310 the default on the PowerPC platform (both Linux and Darwin). The
1311 old Cheney (stop and copy) collector is a build-time option.
1312 (thanks to Cyrus Harmon, after Raymond Toy)
1313 * minor incompatible change: the method by which SBCL finds its
1314 contributed modules has changed; it no longer relies on symbolic
1315 links from an $SBCL_HOME/systems directory, but searches directly
1316 in the subdirectories of $SBCL_HOME.
1317 * enhancement: the dynamic heap size on the Linux/PPC platform is
1318 markedly larger, even using the older Cheney garbage collector.
1319 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1320 certain complicated string types. (reported by Gary King)
1321 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1322 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1323 * fixed bug: DOCUMENTATION on structures no longer signals an
1324 error if no structure type of the right name exists. (reported by
1326 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1327 applicable non-standard primary or :AROUND method on
1328 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1329 no longer cause unbound variable errors. (reported by Kevin Reid)
1330 * fixed bug: metacircle resolution in cases where methods have slots
1331 added before the slots from STANDARD-METHOD. (reported by Jean
1333 * fixed bug: the Power PC assembly code for calling into lisp
1334 sometimes computed its return address wrongly (depending on the
1335 15th bit of the address, fixed at link time). This used to
1336 manifest itself in a segmentation violation while building PCL.
1337 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1338 many others over the years)
1339 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1340 the stack pointer (treated as a signed integer) is negative.
1341 (thanks to Peter van Eynde)
1343 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1344 * new platform: experimental support for the Windows operating
1345 system has been added. (thanks to Alastair Bridgewater)
1346 * fixed several bugs in and robustified the PPC FFI (including
1347 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1348 * bug fix: allow non-simple string symbol names (reported by Paul
1350 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1352 * bug fix: saving a core corrupted callbacks on x86/x86-64
1353 * bug fix: closed a loophole in metacircularity detection and
1354 grounding in the PCL implementation of CLOS.
1355 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1356 (reported by tomppa on #lisp)
1357 * bug fix: clear the direction flag on Lisp -> C transitions, as
1358 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1359 (reported by Andrej Grozin and Hendrik Maryns)
1360 * optimization: major improvements to GC efficiency on GENCGC platforms
1361 * optimization: faster implementation of EQUAL
1362 * optimization: emit more efficient opcodes for some common
1363 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1364 * optimization: several other minor code-generation improvements on x86-64
1365 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1367 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1368 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1369 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1370 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1371 by ANSI as a generic function, and for consistency (SETF
1372 GENERIC-FUNCTION-NAME) is treated likewise.
1373 * fixed bug #233.b: make constraint propagation notice when a variable
1374 value is changed after it is referenced but before it is used
1375 * fixed bug #296: no more arbitrary behaviour from filenames with
1376 odd characters as --load arguments. (reported by Adam Warner)
1377 * fixed bug #390: :CHARACTER-SET pathname components now work as
1378 expected. (reported by Tim Daly Jr)
1379 * fixed bug #391: complicated :TYPE intersections in slot
1380 definitions no longer cause an error in PCL internals.
1381 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1382 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1383 returning the number of octets which would be written to the
1384 file-stream. (thanks to Robert J. Macomber)
1385 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1386 arguments to the internal stream functions. (thanks to David
1388 * bug fix: stack exhaustion is now handled on the x86/SunOS
1389 platform. (thanks to Daisuke Homma)
1390 * bug fix: more accurate ROOM results on GENCGC platforms
1391 * optimization: improved type inference for arithmetic-for
1392 index variables in LOOP
1393 * optimization: faster floating-point SQRT on x86-64
1394 * fixed some bugs revealed by Paul Dietz' test suite:
1395 ** DOCUMENTATION returns NIL instead of "" for method combinations
1396 that don't have a docstring
1398 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1399 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1400 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1401 therefore are not customizeable by user code (as seems to be at
1402 least permitted and maybe required by AMOP). As a consolation,
1403 however, the SBCL implementation of these functions now calls
1404 REINITIALIZE-INSTANCE as specified by AMOP.
1405 * bug fix: slot-definition documentation is propagated as per ANSI
1406 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1407 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1408 argument, as do eslotd initialization methods. (from Pascal
1409 Costanza's "Closer" project)
1410 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1411 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1413 * bug fix: it is now possible to have more than one subclass of
1414 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1415 (reported by Bruno Haible, Pascal Costanza and others)
1416 * bug fix: the dependent update protocol now works for generic
1417 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1418 and Pascal Costanza)
1419 * bug fix: condition-class instances corresponding to
1420 DEFINE-CONDITION forms are now created eagerly. (reported by
1421 Kalle Olavi Niemitalo on comp.lang.lisp)
1422 * bug fix: floating point printing is more accurate in some
1423 circumstances. (thanks to Simon Alexander)
1424 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1425 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1426 * bug fix: callbacks on OS X now preserve stack-alignment.
1427 (thanks to Cyrus Harmon)
1428 * enhancement: the x86-64 disassembler is much better at
1429 disassembling SSE instructions. (thanks to Lutz Euler)
1430 * enhancement: CHECK-TYPE on a variable now allows type-inference
1431 (thanks to Vincent Arkesteijn)
1432 * optimization: improved performance of EUC-JP external format.
1433 (thanks to NIIMI Satoshi)
1434 * optimization: performance improvements to IO on file streams of
1435 :ELEMENT-TYPE CHARACTER
1436 * optimization: much faster memory allocation on x86-64
1437 * optimization: faster garbage collections (latency and throughput)
1439 * optimization: faster bignum subtraction and division on x86 and x86-64
1440 (thanks to Lutz Euler)
1441 * optimization: more accurate type-inference for loops that use a
1442 floating point index variable or a negative step.
1444 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1445 * bug fix: add a workaround to SBCL looping infinitely at startup on
1446 Linux kernels with apparently buggy implementations of personality().
1447 (thanks to Svein Ove Aas)
1448 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1449 (thanks to David Lichteblau)
1450 * bug fix: local bindings shadow global symbol macros for
1451 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1452 * optimization: non-open coded uses of numeric comparison operators
1453 (e.g. >) no longer cons when called with more than one parameter
1454 on platforms supporting dynamic-extent allocation.
1455 * enhancement: saving cores with foreign code loaded is now supported
1456 on MIPS/Linux in addition to the previously supported platforms.
1457 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1458 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1459 * bug fix: division by zero in sb-sprof when no samples were collected
1460 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1461 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1462 (thanks to Alexander Kjeldaas)
1463 * new feature: ignoring the return values of destructive functions
1464 like NREVERSE signals a compile-time style-warning.
1465 (thanks to Kevin Reid)
1466 * new feature: the alignment of alien structure fields can be
1467 explicitly specified. (thanks to Cyrus Harmon)
1468 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1469 and dump core on SIGQUIT
1471 ** incompatible change: threads do not inherit values of specials
1472 from their parents (see manual)
1473 ** bug fix: threads stacks belonging to dead threads are freed by the
1474 next exiting thread, no need to gc to collect thread stacks anymore
1475 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1476 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1477 ** bug fix: dynamic variable and thread start related gc lossage
1478 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1480 * fixed some bugs revealed by Paul Dietz' test suite:
1481 ** SUBTYPEP is slightly more accurate on heinously complicated
1482 CONS types where some of the members have uncertain (in the
1483 NIL, NIL sense) type relationships to each other.
1485 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1486 no longer purified unless :PURIFY T is explicitly specified.
1487 ** Non-purified cores are significantly smaller than before
1489 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1490 * new feature: timers based on Zach Beane's excellent timer package
1491 * added support for the following external formats: koi8-u,
1492 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1493 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1494 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1495 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1496 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1497 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1498 * incompatible change: a threaded SBCL will no longer revert to
1499 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1500 * bug fix: interrupts are disabled until startup is complete; no
1501 more sigsegvs when receiving a signal to soon
1502 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1504 * bug fix: add a workaround for the memory randomization features in
1505 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1506 workaround will only be in effect on systems with the proc filesystem
1508 * bug fix: printing objects of type HASH-TABLE signals a
1509 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1511 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1512 have been running for over 50 days. (reported by Gilbert Baumann)
1513 * bug fix: the logic for getting names of functions gets less
1514 confused when confronded with alternate-metaclass
1515 funcallable-instances. (reported by Cyrus Harmon)
1516 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1517 consistent, even on internal alternate-metaclass objects.
1518 * bug fix: flush closure information collected by physical
1519 environment analysis prepass before the main pass. (bug reported
1521 * bug fix: compiler pack phase does not modify a hashtable, which is
1522 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1523 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1524 may be expanded. (reported by Alexander <malishev> on c.l.l)
1525 * bug fix: no more style-warnings when compiling code using LAST
1526 under high-SPEED low-SPACE settings. (reported by David Wallin
1528 * fixed some incompatibilities between SBCL's MOP and the MOP
1530 ** the METAOBJECT class is now implemented;
1531 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1532 STANDARD-OBJECT, as required;
1533 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1534 now compatible (as required by VALIDATE-SUPERCLASS); there
1535 remains a consistency requirement over the presence or absence
1536 of the FUNCTION class in the superclass list of finalized
1537 classes; see the manual for more details;
1538 ** the :AROUND method for COMPUTE-SLOTS on
1539 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1540 requested slot ordering.
1542 ** bug fix: parent thread now can be gc'ed even with a live
1544 ** bug fix: binding a special with PROGV to no value is not
1545 the same as that symbol not having been bound (thanks to
1547 ** bug fix: binding specials is thread safe (thanks to
1549 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1550 and SB-SPROF do not die with 'no handler for signal XX in
1551 interrupt_handle_now(..)' anymore
1552 ** bug fix: WITH-TIMEOUT works with multiple running threads
1553 * fixed some bugs revealed by Paul Dietz' test suite:
1554 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1555 the :method-class keyword argument.
1557 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1558 * new port: the Solaris operating system on x86 processors is now
1559 mostly supported, though some rough edges in the environment
1560 remain. (thanks to Daisuke Homma)
1561 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1562 space for its heap. (thanks to Thiemo Seufer)
1563 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1564 closures. (thanks to Thiemo Seufer)
1565 * minor incompatible change: eof selects abort in the debugger.
1566 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1567 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1569 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1570 deprecated, and will go away in a future revision of SBCL.
1571 * minor incompatible change: GC-ON and GC-OFF are no longer
1572 implemented with a counter, it does not matter how many times gc
1573 is switched on or off
1574 * bug fix: discriminating functions for generic function classes
1575 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1576 make invalid assumptions about method precedence order. (reported
1578 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1579 platforms. (thanks to Thiemo Seufer)
1580 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1581 * bug fix: correct pathname printing with printer escaping is on.
1582 (thanks to Kevin Reid)
1583 * bug fix: complex VOP definitions in "user-space" no longer trigger
1584 package locks. (reported by Zach Beane)
1585 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1586 for funcallable-instance functions, and is no different from
1588 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1589 characters in the current readtable. (reported by Nicholas Neuss)
1590 * bug fix: SUBTYPEP on various CONS types returns more a more
1591 accurate acknowledgment of its certainty.
1592 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1593 lists in some cases. This partially fixes bug 384.
1594 * flush all standard streams before prompting in the REPL and the
1596 * bug fix: signal handling and triggering gc do not conflict
1597 directly anymore, in particular a high frequency sb-sprof does
1598 not prevent gc from running
1599 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1600 approximation for timezone and DST information between the
1601 universal time epoch and the smallest negative 32-bit time_t.
1602 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1603 year 1899 so long as the encoded time is non-negative.
1604 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1605 the correct answer for non-constant rotate amounts when performing
1606 an inline 32-bit rotation.
1608 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1609 there is only one thread in the session
1610 ** bug fix: memory leak for streams created in one thread and
1611 written to in another
1612 ** bug fix: lockup when compiled with gcc4
1613 ** bug fix: race that allows the gc to be triggered when gc is
1615 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1616 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1618 ** bug fix: finished threads are gc'ed properly
1619 * fixed some bugs revealed by Paul Dietz' test suite:
1620 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1621 has arguments with a different set of applicable methods from
1622 the orignal arguments.
1623 ** The type error thrown by MAP now has a correct expected-type
1625 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1626 name a compiled function.
1627 ** Three MISC tests where a large bignum was improperly coerced to
1628 a float that couldn't represent that bignum during type
1629 derivation were fixed.
1630 ** SUBTYPEP can now handle types involving the negation of a
1631 list-form FUNCTION type.
1632 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1633 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1634 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1636 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1637 * New feature: Experimental support for bivalent streams: streams
1638 opened with :element-type :default now allow character and binary
1639 (unsigned-byte 8) I/O
1640 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1641 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1643 * bug fix: no more highly sporadic "couldn't check whether ~S is
1644 readable" when reading a stream and an interrupt hits in the middle
1645 of a select system call
1646 * compiler better recognizes complex arrays (reported by Eduardo
1648 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1649 for variables on SBCL built with linkage-tables. (reported by Luis
1651 * various error reporting improvements.
1652 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1653 (Thanks to Thiemo Seufer)
1654 * bug fix: nested reader invokations work correctly
1655 * bug fix: it is possible to have simultaneous references to foreign
1656 code and foreign data with the same name.
1658 ** added x86-64 support
1659 ** incompatible change: the threading api now works with thread
1660 objects instead of thread ids
1661 ** bug fix: threads are protected from signals and interruption when
1662 starting up or going down
1663 ** bug fix: a race where an exiting thread could lose its stack to gc
1664 ** bug fix: don't halt on infinite error in threads if possible
1665 ** fixed numerous gc deadlocks introduced in the pthread merge
1666 ** bug fix: fixed thread safety issues in read and print
1667 ** bug fix: debugger doesn't hang on session lock if interrupted at
1668 an inappropriate moment
1669 ** bug fix: run-program is now thread safe(r)
1670 ** bug fix: inner with-recursive-lock no longer releases the mutex
1671 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1672 * fixed some bugs revealed by Paul Dietz' test suite:
1673 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1674 EXPECTED-TYPE slots filled.
1675 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1677 ** MAKE-CONDITION accepts classes as type-designators.
1678 ** COMPILE may never return NIL.
1679 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1680 range before calling Unix time functions
1682 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1683 * numerous signal handling fixes to increase stability
1684 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1685 * minor incompatible change: we now correctly canonize default
1686 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1687 as per the MOP, rather than the historical (INITARG INITFUNCTION
1688 INITFORM). (reported by Bruno Haible)
1689 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1690 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1691 for more information.
1692 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1693 pathname is a directory pathname.
1694 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1695 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1697 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1698 :METACLASS argument in addition to a class name. (reported by
1699 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1700 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1701 (reported by Bruno Haible; patch from Gerd Moellmann)
1702 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1704 * bug fix: more cleanups to the floating point exception handling on
1705 x86-64 (thanks to James Knight)
1706 * bug fix: the compiler does not try to constant fold calls of
1707 COERCE and BIT-* functions when they return freshly constructed
1708 objects. (reported by Nikodemus Siivola and Paul Dietz)
1709 * optimization: improved the MIPS versions of generic (in the
1710 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1711 * optimization: direct conversion of (unsigned-byte 32) to floats on
1712 the PowerPC platform.
1713 * optimization: structure instances with raw slots now use less
1714 memory, and probably show better memory locality. (thanks to
1716 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1717 are treated as requests for stack allocation on the x86-64,
1718 Alpha-32, PPC and SPARC platforms.
1719 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1720 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1721 (thanks to Tony Martinez)
1723 ** gcing a dead thread can no longer lead to lockups
1724 ** threads block signals until they are set up properly
1725 ** errno is no longer shared by threads
1726 ** interrupt-thread restores the eflags register on x86
1727 ** fixed some lockups due to gc/thread interaction
1728 * fixed some bugs revealed by Paul Dietz' test suite:
1729 ** invalid dotted lists no longer raise a read error when
1730 *READ-SUPPRESS* is T
1731 ** signal an error if a symbol that names a declaration is used
1732 as the name of a type, or vice versa
1733 ** allow using the (declare (typespec var*)) abbreviation for
1734 (declare (type typespec var*)) with all type specifiers
1735 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1736 ** always return NIL from PPRINT-POP when OBJECT is NIL
1737 ** don't signal errors when pretty-printing malformed LABELS,
1738 FLET or MACROLET forms
1739 ** declarations in a DOLIST body are also in scope for the
1741 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1743 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1746 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1747 * fixed cross-compiler leakages that prevented building a 32-bit
1748 target with a 64-bit host compiler.
1749 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1750 opened with :IF-EXISTS :OVERWRITE.
1751 * fixed bug 281: error for an invalid qualifier in a short-form method
1752 combination method is not signalled until the faulty method is called.
1753 * bug fix: iteration variable type inferrer failed to deal with open
1754 intervals. (reported by Alan Shields)
1755 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1756 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1757 or more runtime options were provided to the sbcl binary.
1758 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1759 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1760 * optimization: there's now a fast-path for fixnum arguments in the
1761 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1762 * optimization: the code generated on x86-64 is more compact thanks
1763 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1764 * bug fix: floating-point exception handling now partly works on
1765 x86-64. (Thanks to James Knight)
1766 * improvement to the MIPS backend from Thiemo Seufer: C-style
1767 64-bit long long arguments and return values to alien functions
1769 * fixed some bugs revealed by Paul Dietz' test suite:
1770 ** the type-error signalled from WARN has a filled-in DATUM slot.
1771 ** the type-error required when a stream is not associated with
1772 a file has the stream as its datum.
1773 ** type-errors on single-floats on x86-64 no longer have
1774 :INVALID-OBJECT as the datum
1775 ** the type-errors signalled for invalid function names now have
1776 a correct expected type
1777 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1778 for structures defined with a :TYPE. Documentation strings for
1779 typed structures are no longer immediately discarded
1780 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1781 broadcast streams and synonym streams. FILE-LENGTH now also works
1782 on broadcast streams.
1784 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1785 * incompatible change: the --noprogrammer option, deprecated since
1786 version 0.7.5, has been removed. Please use the equivalent
1787 --disable-debugger option instead.
1788 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1790 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1791 inoperational for a while now) has been completely removed.
1792 * null lexical environments are now printed as #<NULL-LEXENV>,
1793 significantly reducing the amount of clutter in typical backtraces.
1794 * documentation on weak pointers, finalization, and after GC hooks
1795 has been added to the manual.
1796 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1797 as other specialized array types, is much faster. SUBSEQ and
1798 COPY-SEQ on such arrays have also been sped up.
1799 * optimization: EQL is now more efficient when at least other argument
1800 is known to be of type (OR FIXNUM (NOT NUMBER)).
1801 * fixed bug: the runtime is now less vulnerable to changes in the
1802 size of the SBCL object on OS X, and virtual memory is reserved for
1803 all spaces that need to be at a fixed address.
1804 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1805 * fixed bug: finalizers and after GC hooks that cause consing are now
1807 * fixed bug: compiler error messages and summaries are now printed to
1808 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1809 * fixed inference of the upper bound of an iteration variable.
1810 (reported by Rajat Datta).
1811 * fixed bug 211e: calling local functions with duplicated constant
1812 keyword argument no longer causes a bogus style warning about an
1814 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1815 ftype declaration to be disregarded. (reported by Dave Roberts)
1816 * fixed bug 373: caused by erronous compilation of references to alien
1817 variables in the runtime on ppc/darwin.
1818 * fixed bug 376: CONJUGATE type deriver.
1819 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1820 (reported by Baughn on #lisp)
1821 * a cross-compiler bug on non-x86 platforms has been identified and
1822 fixed. (thanks to Bruno Haible)
1823 * improvements to the MIPS runtime code for increased stability.
1824 (thanks to Thiemo Seufer)
1825 * increased the maximimum compact environment size to allow
1826 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1827 * partial workaround for bug 135: don't name the function we're
1828 calling for hairy cases of EVAL, so as not to accumulate one environment
1829 entry per call to EVAL. (reported by Kevin Reid)
1830 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1831 * optimization: type testing for non-vector arrays should be faster.
1832 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1834 * bug fix: setting 31st element of a bit vector to zero did not work
1836 * bug fix: redefining a class definition which failed due to a
1837 previous accessor / function clash now works (but see BUGS entry
1838 #380 for more problems in this area). (thanks to Zach Beane)
1839 * the long form of DEFINE-METHOD-COMBINATION disables method group
1840 checking when given a single method group with pattern *. (thanks
1842 * on x86 compiler supports stack allocation of results of simple
1843 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1844 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1845 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1846 * fixed some bugs related to Unicode integration:
1847 ** the restarts for recovering from input and output encoding
1848 errors only appear when there is in fact such an error to
1850 * fixed some bugs revealed by Paul Dietz' test suite:
1851 ** MISC.549 and similar: late transformation of unsafe type
1852 assertions into derived types caused unexpected code
1854 ** SCALE-FLOAT type deriver is less wrong.
1855 ** type derivers for EXP, LOG and similar functions compute result
1856 types for complex arguments better.
1857 ** (MISC.563) CONJUGATE type deriver works for very restricted
1859 ** out-of-line type testers for character strings are available.
1860 ** EQUAL compiler transform understands specialness of objects
1862 ** accessing double-floats stored on the stack now works on x86-64.
1863 ** debugger internals could sometimes create invalid lispobjs,
1864 resulting in GC crashes.
1865 ** MISC.548: type check weakening can convert required type into
1867 ** initialization forms for bindings are not in scope of free special
1870 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1871 * incompatible change: thread support for non-NPTL systems has
1872 been removed - locking is buggy and unreliable. A threaded
1873 SBCL build will now warn at startup and refuse to create
1874 new threads, unless futex support is detected in the kernel
1875 * incompatible change: the top level REPL now has only an ABORT
1876 restart associated with it, not TOPLEVEL and ABORT as it used to.
1877 TOP and TOPLEVEL are now available as debugger commands for
1878 returning to the top level.
1879 * incompatible change: forms evaluated in the REPL now use the
1880 global optimization policy.
1881 * incompatible change: user- and system-initialization files are
1882 no longer processed with LOAD, but by READ and EVAL; hence the
1883 global optimization policy, startup package, readtable, etc,
1885 * The .fasl file format number has been incremented because of
1886 various incompatible changes.
1887 * internal entry point details and argument counts no longer appear
1888 in backtraces unless explicitly requested by setting
1889 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1890 * built-in and standard functions no longer have names like "top
1891 level local call to FOO".
1892 * fixed bug 32: functions defined in non-null lexical environments
1893 now have more legible printed representation
1894 * fixed bug 33: functions defined in non-null lexical environemnts
1895 are now more amenable to inspection by INSPECT.
1896 * workaround for bug 354: XEPs no longer appear in backtraces unless
1897 explicitly requested.
1898 * fixed bug: receiving the signal which results from attempting to
1899 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1900 SIGBUS on other *BSDs) on architectures where the C stack is also
1901 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1902 to debugger confusion or wild instability. (reported by Cheuksan
1904 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1905 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1906 (reported by Lutz Euler)
1907 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1908 compiled code. (reported by Paul Dietz)
1909 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1910 specialized parameter to a method to something that is not TYPEP
1911 the specializer is now possible.
1912 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1913 face of package deletion.
1914 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1915 pathname. (reported by David Tolpin on c.l.l)
1916 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1917 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1918 STRING-STREAM and FILE-STREAM, respectively.
1919 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1920 than previously; in addition, its test suite is now run on build.
1921 (thanks to Luke Gorrie)
1922 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1923 * optimization: added a immediate representation for single-floats
1925 * fixed some bugs revealed by Paul Dietz' test suite:
1926 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1927 ** attempting to create a package with a colliding nickname causes
1928 correctable errors to be signalled.
1929 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1930 ** several x86-64 backend bugs related to sign-extension of immediate
1933 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1934 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1935 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1937 * fixed loading of multiply forward-referenced layouts.
1938 (thanks to Cheuksan Wang)
1939 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1940 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1941 (see COMPILE-FILE documentation for details of :PRINT option)
1942 * fixed bugs 19 and 317: fixed-format floating point printing is
1943 more accurate. This also fixes a bug reported by Adam Warner
1944 related to the ~@F format directive.
1945 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1947 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1948 dispatch table if the from-char is a dispatch macro character.
1949 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1950 by the wordsize no longer ignore the last word. (reported by Lutz
1952 * fixed bug in type checking of dynamic-extent variables. (reported
1954 * optimization: sequence traversal functions use their freedom to
1955 coerce function designators to functions.
1956 * optimization: code with many calls to CLOS methods specialized on
1957 CLOS classes has had redundant type checks removed.
1958 * optimization: added declarations to speed up operations that access
1959 the internal character database (for example STRING-UPCASE)
1960 * optimization: comparison operations between floats and sufficiently small
1961 fixnums no longer create extra rationals
1962 * fixed some bugs related to Unicode integration:
1963 ** portions of multibyte characters at the end of buffers for
1964 character-based file input are correctly transferred to the
1965 start of the buffer at the next read.
1966 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1967 passing it through to OPEN.
1968 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1969 argument given to internal calls to OPEN.
1970 ** the built-in comment readers (introduced by character sequences
1971 ";" and "#|") are more forgiving to encoding errors; they will
1972 STYLE-WARN and then attempt to resync the stream at a character
1973 boundary. (thanks to Teemu Kalvas)
1974 * fixed some bugs in the x86-64 port:
1975 ** Negative short int return values from c-calls are sign-extended
1977 ** The stack is aligned to 16-bytes for c-calls, as required by
1978 the ABI. (thanks to Cheuksan Wang)
1979 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1980 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1981 for enums. (thanks to Vincent Arkesteijn)
1982 ** Multiple small optimizations and bugfixes for floating point
1984 * fixed some bugs revealed by Paul Dietz' test suite:
1985 ** Space, Tab, Linefeed, Return and Page have the invalid
1986 secondary constituent character trait.
1987 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1989 ** WITH-INPUT-FROM-STRING should only update the index place on
1991 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1992 works more reliably.
1993 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1994 with one-dimensional arrays with fill pointers.
1995 ** TYPE-OF failed on a complex with an integer realpart and a
1997 ** compiler failure during type inference for the code of form
1998 (IF (EQL X (THE ...)) ...) (MISC.535).
2000 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2001 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2002 platform. The port supports 61-bit fixnums, large memory spaces
2003 and reloading shared object files.
2004 * enhancement: saving cores with foreign code loaded is now
2005 supported on ppc/Darwin in addition to the previously supported
2007 * enhancement: the statistical profiler now walks deeper into the
2008 call stack for more meaningful call-graphs and accrued time
2009 reports (x86/x86-64 only). It also now reports time spent in
2011 * enhancement: it is now possible to trace most individual methods
2012 of a generic function in addition to tracing the generic function
2014 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2016 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2017 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2018 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2019 produces an error. (thanks to Vincent Arkesteijn)
2020 * bug fix: NAMESTRING on pathnames with :WILD components in their
2021 directories works correctly. (thanks to Artem V. Andreev)
2022 * fixed bug 125: compiler preserves identity of closures. (reported
2024 * bug fixed: functions with &REST arguments sometimes failed with
2025 "Undefined function" when compiled with (DEBUG 3). (reported by
2027 * bug fix: overflow during compiling of setting element of a bit
2028 vector with constant index and value. (reported by Timmy Douglas)
2029 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2030 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2031 * on x86 compiler partially supports stack allocation of dynamic-extent
2033 * GO and RETURN-FROM do not check the extent of their exit points
2034 when compiled with SAFETY 0.
2035 * fixed some bugs related to Unicode integration:
2036 ** encoding and decoding errors are now much more robustly
2037 handled; it should now be possible to recover even from invalid
2038 input or output to the terminal. (thanks to Teemu Kalvas)
2039 ** provided a first cut at implementing STRING-TO-OCTETS and
2040 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2041 ** altered the SB-MD5 contributed module slightly, changing the
2042 interface just enough for it to be supportable for builds where
2043 lisp characters are not eight bits.
2044 * fixed some bugs revealed by Paul Dietz' test suite:
2045 ** the FORMATTER-generated functions for ~V[ conditionals require
2046 the correct number of arguments.
2047 ** READ-FROM-STRING returns the mandated second value when applied
2048 to displaced strings.
2049 ** the #\Rubout and #\Backspace characters are treated as invalid
2050 constituent characters by the tokenizer.
2052 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2053 * new feature: reloading changed shared object files with
2054 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2055 * new feature: references to foreign variables and functions
2056 can now be compiled and loaded before the corresponding shared
2057 object file is loaded, as long as the foreign definitions are
2058 available at runtime.
2059 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2060 supported. (thanks to Dan Debertin)
2061 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2062 just keywords. (thanks to Vincent Arkesteijn)
2063 * fixed bug #331: structure-class instances corresponding to
2064 DEFSTRUCT forms are now created eagerly.
2065 * fixed bug #345: backtraces from calls to undefined functions work
2066 on x86 as well. Related bug #61 is now also partially fixed on x86
2067 (backtraces from throws to unknown catch tags.)
2068 * bug fix: lambda-list parsing is now stricter vrt. order and number
2069 of lambda-list keywords.
2070 * bug fix: as specified by AMOP, an error is signalled if a
2071 class-option appears multiple times in a DEFCLASS form. (reported
2073 * bug fix: RANDOM can be compiled when the compiler derives the type
2074 of its numeric argument as a disjoint set of small integers.
2075 (reported by Paul Dietz)
2076 * bug fix: starting a core saved with shared objects loaded when
2077 those objects are not available no longer causes threaded SBCL to
2078 hang. (reported by Sean Ross)
2079 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2081 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2082 argument, which must always be NIL. (reported by Kalle Niemitalo)
2083 * bug fix: printing 1.0d+23 no longer results in an error.
2084 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2085 * bug fix: structure slot setters preserve evaluation order. (thanks
2087 * fixed some bugs related to Unicode integration:
2088 ** RUN-PROGRAM can allow its child to take input from a Lisp
2089 stream. (reported by Stefan Scholl)
2090 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2091 locales. (reported by Ken Causey)
2092 * fixed some bugs revealed by Paul Dietz' test suite:
2093 ** INCF, DECF and REMF evaluate their place form as specified in
2095 ** FORMATTER expands ~{ ~} iteration directives with V or #
2096 parameters correctly.
2097 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2098 consequent uses no arguments correctly.
2099 ** the system has a partial understanding of the (COMPLEX RATIO)
2101 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2104 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2105 * new feature: a build-time option (controlled by the :SB-UNICODE
2106 keyword feature, enabled by default) for building the system with
2107 support for the entire 21-bit character space defined by the
2109 * new feature: the system now has rudimentary external-format
2110 support; the primary user-visible change at this time is that
2111 characters with the high bit set (such as lower-case-e-acute) will
2112 print correctly to a terminal in a UTF-8 environment.
2113 * minor incompatible change: BASE-CHAR no longer names a class;
2114 however, CHARACTER continues to do so, as required by ANSI.
2115 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2116 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2117 has been moved to the SB-EXT package (temporarily re-exported from
2119 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2120 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2122 * fixed bug #351: better error-handlind and reporting for malformed
2124 * fixed bug #350: bignum-printing is now more memory-efficient,
2125 allowing printing of very large bignums, eg. (expt 2 10000000).
2126 (reported by Bruno Haible)
2127 * fixed bug #302: better primitive-type selection for intersection
2129 * fixed bug #308: non-graphic characters now all have names, as
2130 required. (reported by Bruno Haible)
2131 * bug fix: redefining a class with different superclasses now correctly
2132 removes it from the direct-subclasses of its previous superclasses.
2133 (reported by David Morse)
2134 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2135 new value now works. (reported by Bruno Haible)
2136 * bug fix: correct canonicalization of multiple non-standard slot
2137 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2138 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2139 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2140 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2141 now exists, an signals an error.
2142 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2143 during macroexpansion for non-iteration variables as well. (reported
2144 by Bruno Haible for CMUCL)
2145 * bug fix: Cyclic structures and unprintable objects in compiler
2146 messages no longer cause errors. (reported by Bruno Haible)
2147 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2148 and READ-FROM-STRING all now return a primary value of NIL if
2149 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2150 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2151 (reported by Bruno Haible for CMUCL)
2152 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2153 do not designate a condition. (reported by Bruno Haible for
2155 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2156 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2157 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2158 permitting resolution in favour of any of the conflicting symbols.
2159 (reported by Bruno Haible for CMUCL)
2160 * bug fix: EQUAL compiler optimizations is less aggressive on
2161 strings which can potentially compare true despite having distinct
2162 specialized array element types.
2163 * bug fix: unit enumerations can be defined without dividing by
2164 zero. (thanks to Vincent Arkesteijn)
2165 * FORMAT compile-time argument count checking has been enhanced.
2166 (report from Bruno Haible for CMUCL)
2167 * a partial workaround for the bug 262: the compiler does not try to
2168 inline-expand a local function doing RETURN-FROM from a deleted
2169 BLOCK. (thanks to Peter Denno for the bug report and to David
2170 Wragg for the simple test case)
2171 * fixed some bugs revealed by Paul Dietz' test suite:
2172 ** RENAME-PACKAGE allows all package designators as new package
2174 ** constraint propagation and lambda variable substitution are
2175 more cautious in dealing with partially deleted code.
2176 ** compiler sometimes lost reoptimization passes.
2177 ** CERROR, given a condition as condition designator, passes its
2178 remaining arguments to the continue format control without
2180 ** Case-altering FORMAT directives work correctly on non-ASCII
2182 ** The REAL type specifier handles bounds outside the floating
2183 point ranges without signalling FLOATING-POINT-OVERFLOW.
2184 ** Functions with IR1-transformations can create intercomponent
2185 references to global functions.
2186 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2188 ** FORMAT ~R treats a nil value for its first parameter correctly.
2190 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2191 * enhancement: saving cores with foreign code loaded is now
2192 supported on x86/NetBSD and sparc/Linux in addition to the previously
2193 supported platforms.
2194 * bug fix: on some platforms repeated installations caused multiple
2195 copies of HTML documentation to be installed -- should not happen
2196 any more. (reported by Stefan Scholl)
2197 * bug fix: parsing self-recursive alien record types multiple times
2198 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2199 original patch by Helmut Eller for CMUCL)
2200 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2201 (thanks to Richard Kreuter)
2202 * bug fix: defining classes whose accessors are methods on existing
2203 generic functions in other (locked) packages no longer signals
2204 bogus package lock violations. (reported by François-René Rideau)
2205 * bug fix: special variables as DEFMETHOD parameters no longer have
2206 associated bogus type declarations. (reported by David Wragg and
2208 * bug fix: read-write consistency on streams of element-type
2209 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2210 * bug fix: redefiniton of the only method of a generic function with
2211 no DEFGENERIC no longer emits a full WARNING. In addition,
2212 redefinition of generic functions with no DEFGENERIC to an
2213 incompatible lambda list now signals an error. (thanks to Zach
2215 * bug fix: DEFGENERIC now works even when there's a function of the
2216 same name in an enclosing lexical environment. (thanks to Zach
2218 * fixed compiler failure, caused by instrumenting code during
2219 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2220 * optimization: added loop analysis and improved register allocation
2221 * fixed some bugs revealed by Paul Dietz' test suite:
2222 ** POSITION on displaced vectors with non-zero displacement
2223 returns the right answer.
2224 ** (SIMPLE-STRING) is a valid type specifier for sequence
2226 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2228 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2229 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2231 ** The justification version of the FORMAT ~< directive treats
2232 non-zero minpad parameter correctly.
2234 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2235 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2236 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2237 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2238 the supported interface.
2239 * new feature: Single-stepping of code compiled with DEBUG 2 or
2240 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2241 * new feature: saving cores with foreign code loaded is now
2242 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2243 Timothy Moore's work for CMUCL)
2244 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2245 parameters to * instead of NIL if no initform is supplied.
2246 (reported by Johan Bockgaard)
2247 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2248 correctly when FUNCALL appears as the car of the form. Note:
2249 despite this FUNCALL forms are not currently subject to
2250 compiler-macro expansion. (port of Raymond Toy's fix for the
2251 same from CMUCL, reported by Johan Bockgaard)
2252 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2253 (thanks for Teemu Kalvas)
2254 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2255 case instead of terminating the iteration (thanks for Julian
2256 Squires, Sean Champ and Raymond Toy)
2257 * bug fix: incorrect expansion of defgeneric that caused a style
2258 warning. (thanks for Zach Beane)
2259 * bug fix: slot accessor effective method computation works properly
2260 for classes with multiple non-standard applicable methods on
2261 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2262 * on x86 compiler supports stack allocation of results of LIST and
2263 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2264 CMUCL implementation by Gerd Moellmann)
2265 * fixed some bugs revealed by Paul Dietz' test suite:
2266 ** FORMAT strings with both the ~<~:;~> form of the justification
2267 directive and pretty-printing directives cause an error.
2269 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2270 * incompatible change: the internal functions
2271 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2272 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2273 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2274 instead of the old functions.
2275 * new feature: on platforms where "dladdr" is available foreign
2276 function names now appear in backtraces. (based on Helmut Eller's
2278 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2279 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2281 * documentation: ASDF manual is now distributed with SBCL.
2282 * bug fix: SBCL can now load its contributed modules with REQUIRE
2283 even if the system-provided entries have been removed from
2284 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2286 * bug fix: backtraces involving undefined functions or assembly
2287 routines are more informative. (thanks to Brian Downing)
2288 * bug fix: mutually referent alien structures now work correctly.
2289 (reported by Rick Taube)
2290 * bug fix: structures defined by WITH-ALIEN can be referred to
2291 within other definitions in the same WITH-ALIEN.
2292 * bug fix: division operators (MOD, TRUNCATE and the like) with
2293 constant zero divisors and integer dividends no longer generate
2295 * bug fix: provide default methods for INPUT-STREAM-P and
2296 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2297 * bug fix: improve the detection and resolution of MOP metacycles
2298 (where effective method computation depends on the generic function
2299 having its effective method computed). (reported by Bruno Haible)
2300 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2301 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2302 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2303 * bug fix: pathnames with relative directory components can be
2304 represented relative to default pathnames.
2305 * optimization: in taking the GCD of bignums, reduce the two bignums
2306 to approximately the same size (using Euclid's algorithm) before
2307 applying the more sophisticated binary GCD. (thanks to Juho
2309 * optimization: COUNT on bitvectors now operates word-at-a-time.
2310 * optimization: ASH with a positive, but not necessarily constant,
2311 (leftwards) shift, when in a modular context, is compiled to a
2313 * fixed some bugs revealed by Paul Dietz' test suite:
2314 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2315 if the corresponding argument is NIL.
2316 ** FORMAT directives accepting a minpad parameter treat negative
2318 ** literal commas as character parameters to FORMAT directives are
2320 ** literal spaces directly after ~<Newline> directives within a
2321 format-logical-block (~:< ~@:>) do not induce :FILL-style
2322 conditional newlines.
2323 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2324 as specified: it no longer includes conditional newlines).
2325 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2327 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2328 :PER-LINE-PREFIX argument does not evaluate to a string.
2330 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2331 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2332 the manual for details; for now, package locks can be disabled by
2333 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2334 if no major problems are found then it is likely that they will be
2335 compiled in unconditionally.
2336 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2337 unsupported operators on all platforms. To load a shared library
2338 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2339 object file, link it into a shared library outside of SBCL and
2340 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2342 * bug workaround: ROOM T and the GC were not working together
2343 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2344 reporting facility aren't preserved. That reporting has been
2345 disabled, so now until and unless someone figures out how to make it
2346 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2347 * minor incompatible change: as threatened around sbcl-0.8.0, the
2348 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2349 The symbols are also exported from SB-PCL for backwards
2350 compatibility, but more so than before SB-PCL should be treated as
2351 an implementation-internal package.
2352 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2354 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2355 It is known as of this release not to work on the Alpha, however.
2356 * fixed bug #167: errors signalled due to illegal syntax in method
2357 bodies are now more legible.
2358 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2359 designators and can hence be used with TYPEP.
2360 * fixed bug #333: CHECK-TYPE now ensures that the type error
2361 signalled, if any, has the right object to be accessed by
2362 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2363 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2364 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2366 * fixed bug #334: programmatic addition of slots using specialized
2367 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2368 and :ALLOCATION :CLASS slots.
2369 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2370 float exponents. (rereported by Peter Seibel)
2371 * fixed a bug: #\Space (and other whitespace characters) are no
2372 longer considered to be macro characters in standard syntax by
2373 GET-MACRO-CHARACTER.
2374 * fixed bug: initialization of condition class metaobjects no longer
2375 causes an instance of the condition to be created. (reported by
2377 * fixed bug: it is now possible to have slots such that
2378 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2379 description is neither :INSTANCE nor :CLASS.
2380 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2381 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2382 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2383 non-standard SLOT-DEFINITION-ALLOCATION values.
2384 * fixed bugs: various race conditions handling exiting threads.
2385 CL-PPCRE's thread torture test now passes.
2386 * fixed arguably-a-bug: GC time proportional to number of threads in
2387 system even when most of them are idle
2388 * optimization: improved performance of BIT and SBIT on bit-vectors.
2389 * .fasl file incompatibility: The fasl file version number has
2390 been incremented because of changes associated with package locks.
2392 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2393 * minor incompatible change: the system no longer provides
2394 optimization hints (conditions which are TYPEP
2395 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2396 mode; these hints are still emitted when higher SPEED optimization
2398 * new contrib module: a sampling profiler (profiling by statistical
2399 sampling, rather than by instrumenting functions) is available as
2400 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2401 * the behaviour of the standard function ED is now customizeable by
2402 third parties through a hook variable: see ED's documentation
2403 string for information on the protocol.
2404 * the compiler no longer emits efficiency notes for (FUNCALL X)
2405 when the type of X is uncertain under default optimization
2407 * fixed bug 276: mutating a binding of a specialized parameter to a
2408 method to something that is not TYPEP the specializer is now
2410 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2411 exhibit the required behaviour on the x86 platform. (thanks to
2412 Peter van Eynde, Eric Marsden and Bruno Haible)
2413 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2414 even for difficult arguments. (reported by Peter Graves)
2415 * fixed bug 141a: the backquote printer now descends quoted
2417 * fixed another bug in backquote printing: no more destructive
2418 modification of the form's list structure. (reported by Brian
2420 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2421 move between its address being taken and the call to
2422 interrupt_thread, fixing a crashing race condition.
2423 * the SB-POSIX contrib implementation has been adjusted so that it
2424 no longer exhibits ridiculously poor performance when constructing
2425 instances corresponding to C structs.
2427 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2428 * minor incompatible change: the sb-grovel contrib now treats C
2429 structures as alien (in the sense of SB-ALIEN) objects rather than
2430 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2431 has implications for memory management of client code
2432 (sb-grovel-returned objects must now be manually managed) and for
2433 type safety (alien objects now have full types).
2434 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2435 used to control emission of compiler diagnostics, rather than the
2436 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2437 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2438 quality should be considered deprecated.
2439 * install.sh now installs the user manual as well
2440 * (not quite a new documentable feature, but worth considering in
2441 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2442 beginnings of a semantically meaningful condition hierarchy is
2443 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2445 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2446 designator as the defaults argument.
2447 * fixed bug: Displaced arrays whose displaced-to array has become
2448 too small now cause ARRAY-DIMENSION to signal an error, providing
2449 for safer bounds-checking. (reported by Bruno Haible)
2450 * fixed bug: DEFCLASS slot definitions with identical :READER and
2451 :WRITER names now signal a reasonable error. (reported by Thomas
2453 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2455 * fixed bug: Invalid slot specification errors now print correctly.
2456 (thanks to Zach Beane)
2457 * fixed bug 320: Shared to local slot value transfers in class
2458 redefinitions now happen corrently from superclasses as
2459 well. (reported by Bruno Haible)
2460 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2462 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2463 improper lists correctly. (reported by Bruno Haible)
2464 * fixed bug 313: source-transform for <fun-name> was erroneously
2465 applied to a call of a value of a variable with name <fun-name>.
2466 (reported by Antonio Menezes Leitao)
2467 * fixed bug 307: The obsolete instance protocol ensures that
2468 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2469 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2470 remove dead unknown-values globs from the middle of the stack.
2471 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2472 easier to resume long computations after using *BREAK-ON-SIGNALS*
2473 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2474 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2475 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2476 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2477 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2478 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2480 * fixed a (fairly theoretical) bug in string printing: if
2481 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2482 does not have array-element-type equal to the most general string
2484 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2485 function name. (thanks to Nikodemus Siivola)
2486 * fixed bug: compile-time format string checker failed on
2487 non-closed ~{. (reported by Thomas F Burdick)
2488 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2489 don't warn on legal loop code involving more than one aggregate
2490 boolean. (thanks to Nikodemus Siivola)
2491 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2492 in keyword position to MAKE-PACKAGE was not being reported as
2494 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2495 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2497 * fixed bugs 280 and 312: the checking for multiple definitions in a
2498 file is less likely to become confused by uses of inline
2500 * fixed bug: the #S reader macro performs the keyword coercion
2501 specified for slot names. (reported by Kalle Niemitalo)
2502 * fixed bug: lambda lists may contain symbols whose names start with
2503 & but are not lambda-list-keywords; their occurrence triggers a
2505 * fixed bug 321: define-method-combination argument lambda lists do
2506 not cause invalid code to be generated when &optional or &aux
2507 variables have default values. (reported by Bruno Haible)
2508 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2509 have CLOS classes; this appears also to have fixed reported
2510 instability in stack exhaustion detection.
2511 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2512 MUFFLE-WARNING when no associated restart is present is now
2514 * optimization: rearranged the expansion of various defining macros
2515 so that each expands into only one top-level form in a
2516 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2518 * optimization: used a previously little-used slot in symbols to
2519 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2521 * fixed some bugs revealed by Paul Dietz' test suite:
2522 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2524 ** Fixed an optimization bug related to inheritance of initforms
2525 from local to shared slots.
2526 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2527 ** CAST optimizer forgot to flush argument derived type.
2528 ** print/read consistency on floats is now orders of magnitude
2529 more likely. (thanks also to Bruno Haible for a similar report
2531 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2532 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2533 for objects of type REAL. Make it so.
2534 ** SXHASH is specified (infelicitously) to respect similarity,
2535 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2536 it so. (thanks to Markus Ziegler)
2537 ** on the Alpha, the compiler succeeds in compiling functions
2538 returning a known number of arguments greater than 63.
2539 ** fixed handling of invalid NIL arguments in keyword position
2541 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2543 ** provided a readably-printable representation for RANDOM-STATE
2545 ** ensured that pathnames, where they have a namestring, always
2546 print using #P"..." syntax.
2548 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2549 * Support for the forthcoming 2.0 version of the NetBSD kernel
2550 running on x86 hardware has been added. (thanks to Perry
2551 E. Metzger most immediately, and others for their past work)
2552 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2553 current release version; SBCL's OpenBSD support had been broken
2554 since about the time of OpenBSD's switch to ELF binary format.)
2555 * [placeholder for DX summary]
2556 ** user code with &REST lists declared dynamic-extent, under high
2557 speed or space and low safety and debug optimization policy.
2558 * The manual has been converted to Texinfo format and the debugger
2559 chapter from the cmucl manual has been added.
2560 * A facility has been added to extract documentation strings from
2561 sbcl and store them as Texinfo-formatted snippets for inclusion in
2562 the manual (via Texinfo's @include directive)
2563 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2564 the test case to Dave Roberts)
2565 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2566 pointers. (reported by Sean Ross)
2567 * bug fix: PROFILE output is printed nicely even for large numerical
2568 values. (thanks to Zach Beane)
2569 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2570 greater than 32 handle EOF correctly.
2571 * bug fix: on X86 an immediate argument of the IMUL instruction is
2572 correctly printed in disassembly. (thanks to Lutz Euler)
2573 * bug fix: class slots in redefined classes preserve their old
2574 values. (thanks to Bruno Haible and Nikodemus Siivola)
2575 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2576 succeeds. (reported by Marco Baringer)
2577 * fixed some bugs revealed by Paul Dietz' test suite:
2578 ** READ-SEQUENCE now works on ECHO-STREAMs.
2579 ** RATIONALIZE works more according to its specification. (thanks
2582 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2583 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2584 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2585 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2586 should matter to you only if you rebind the printer control
2587 variables and then find you want different bindings in the
2588 debugger than in the ordinary execution of your program.)
2589 * The runtime build system has been tweaked to support building
2590 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2591 assembler and linker. (thanks to Nikodemus Siivola)
2592 * Unbound, undefined, undeclared variables now trigger full
2593 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2594 more often programmer error than deliberate exploitation of undefined
2596 * optimization: the hash algorithm for strings has changed to one
2597 that is less vulnerable to spurious collisions. (thanks to Juho
2599 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2600 needless bounds checking. (thanks to Juho Snellman)
2601 * optimization: implemented multiplication as a modular
2602 (UNSIGNED-BYTE 32) operation on the PPC backend.
2603 * fixed some bugs revealed by Paul Dietz' test suite:
2604 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2606 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2607 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2608 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2610 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2612 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2614 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2615 their output stream on EOF from read.
2616 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2617 have been read to end-of-file.
2618 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2620 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2621 description of determination of which consecutive characters
2623 ** Printing the "Space" character with escaping on now yields "#\\ ",
2624 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2625 ** Reading floating-point numbers with *READ-BASE* set to a number
2626 less than 10 works correctly.
2627 ** Reading floating-point numbers with *READ-BASE* set to a number
2628 more than 10 works correctly.
2629 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2630 the readtable currently in effect.
2632 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2633 * minor incompatible change: parsing of namestrings on a physical
2634 (Unix) host has changed; numbers after the final #\. in a
2635 namestring are no longer interpreted as a version field. This is
2636 intented to be largely invisible to the user, except that the
2637 meaning of the namestring "*.*.*" has changed: it now refers to a
2638 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2639 should usually be replaced by
2640 (make-pathname :name :wild :type :wild :version :wild)
2641 with the added benefit that this is more likely to be portable.
2642 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2643 option to OPEN now signals an error if the file being opened
2644 exists; this may have an impact on existing code.
2645 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2646 signals received, on the PowerPC platforms (both Linux and
2647 Darwin). (thanks to Pierre Mai for pointing out the location of
2649 * several fixes on OS X: The system now builds and runs cleanly on
2650 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2651 (thanks to Brian Mastenbrook)
2652 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2653 second-resolution: integer multiples of 1/3600 between -24 and 24.
2654 (thanks to Vincent Arkesteijn)
2655 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2656 type when called with 1 argument; PEEK-CHAR checked type of
2657 PEEK-TYPE only after having read first character from a
2658 stream. (reported by Peter Graves)
2659 * bug fix: the garbage collector now has much better locality
2660 behaviour, and in particular no longer treats all memory as being
2661 exhausted when many small objects point to each other in a deeply
2663 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2664 recognized as being TYPEP their class.
2665 * bug fix: the PUSHNEW documentation string has been corrected.
2666 (thanks to Vincent Arkesteijn)
2667 * bug fix: defaulting of the value for the last of an atypically
2668 large number of multiple values being bound was not being
2669 performed correctly on the Alpha or PPC platforms
2670 * optimization: implemented multiplication as a modular
2671 (UNSIGNED-BYTE 32) operation on the x86 backend.
2672 * optimization: SEARCH on simple-base-strings can now be open-coded.
2673 (see also contrib/compiler-extras.lisp for inspiration for
2674 teaching the compiler about the Boyer-Moore algorithm).
2675 * value, returned by MAX (and MIN) called with several EQUALP, but
2676 not EQL, arguments now does not depend on compiler settings.
2677 * fixed some bugs revealed by Paul Dietz' test suite:
2678 ** in stack analysis liveness information is propagated from
2679 non-local entry points.
2680 ** pathwise CAST removing failed when the CAST node did not start
2682 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2683 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2685 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2686 host is already defined.
2687 ** RENAME-FILE works on streams instead of signalling an internal
2689 ** PEEK-CHAR uses the current readtable when determining whether
2690 or not a character is whitespace.
2691 ** MERGE-PATHNAMES handles the case when the pathname does not
2692 specify a name while the default-pathname specifies a version.
2693 ** Pathnames now stand a better chance of respecting print/read
2695 ** Attempting to use standardized file system operators with a
2696 pathname with invalid :DIRECTORY components signals a
2698 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2700 ** DIRECTORY on logical pathnames is more correct.
2701 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2702 signal a TYPE-ERROR if their argument is not a stream.
2703 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2704 designator argument does not designate a stream.
2705 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2706 examining the synonym.
2707 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2709 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2710 element-type larger than ([UN]SIGNED-BYTE 32).
2712 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2713 * When built with the :SB-FUTEX feature, threaded builds now take
2714 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2715 for faster/more reliable mutex and condition variable support.
2716 * Incompatible change (but one you probably shouldn't have been using
2717 anyway): the interface and code for arbitrating between multiple
2718 threads in the same user session has been redesigned.
2719 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2720 error when called without an explicit environment argument.
2721 (thanks to Nikodemus Siivola)
2722 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2723 confused about their position. (thanks to Adam Warner and Gerd
2725 * bug fix: Pretty printing backquoted forms with unquotations in the
2726 argument list position of various code constructs such as LAMBDA
2727 now works correctly. (reported by Paul Dietz)
2728 * bug fix: Pretty printing unquotations no longer loses all
2729 stream position information.
2730 * optimization: performance of string output streams is now less
2731 poor for multiple small sequence writes.
2732 * optimization: performance of CSUBTYPEP in the presence of complex
2733 expressions involving CONS and NOT many times has been improved.
2734 (reported by Paul Dietz)
2735 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2737 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2738 streams for the REPL, for the debugger, and so on. (thanks to
2740 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2741 * fixed some bugs revealed by Paul Dietz' test suite:
2742 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2743 is ignored if it is too small, rather than propagating through
2744 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2745 ** extremely complex negations of CONS types were not being
2746 sufficiently canonicalized, leading to inconsistencies in
2748 ** VALUES tranformer lost derived type.
2750 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2751 * fixed a bootstrapping bug: the build process no longer assumes
2752 that the various BOOLE-related constants have the same value in
2753 host and target lisps. (noted by Paul Dietz' test suite on an
2754 SBCL binary built from CLISP)
2755 * The system can now be dynamically linked on the MIPS platform,
2756 which enables dynamic loading of foreign code from Lisp. (thanks
2757 to Ralf Baechle for discussions on the MIPS ABI)
2758 * The system now records debugging information for its own source
2759 files in a filesystem-position-independent manner, relative to
2760 the "SYS" logical host.
2761 * fixed a compiler bug: MV-LET convertion did not check references
2762 to the "max args" entry point. (reported by Brian Downing)
2763 * tweaked disassembly notes to be less confident about proclaiming
2764 some instruction as an LRA. (thanks to Brian Downing)
2765 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2766 now each have their own history, command character, and other
2767 characteristics. (thanks to David Lichteblau)
2768 * fixed some bugs revealed by Paul Dietz' test suite:
2769 ** compiler failure in compiling LOGAND expressions including a
2771 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2772 shift greater than 32.
2773 ** FLUSH-DEST did not mark blocks for type check regeneration.
2774 ** HANDLER-CASE failed to accept declarations in handler clauses
2775 in some circumstances.
2777 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2778 * New code in contrib/sb-introspect (still probably not entirely
2779 stable yet) provides some support for smart Lisp development
2780 environments like SLIME.
2781 * The conditions signalled for errors occurring when loading .fasl
2782 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2783 in a way which should help ASDF recover gracefully.
2784 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2785 stuff has been cleaned up. If you code contrib/ stuff, this might
2786 affect you, and you can look at contrib/README, contrib/STANDARDS,
2787 and/or the 0.8.4.27 diff to check.
2788 * In full calls the compiler now does not generate checks for declared
2789 argument types for all arguments.
2790 * various threading fixes
2791 ** and some experimental patches which didn't make it into
2792 the main tree for this release, but which are shipped in
2793 contrib/experimental-thread.patch as a possible fix for some
2794 failures (deadlock, spinning...) in GC-intensive multithreaded
2796 * fixed PPC build problem (source code incompatibility of different
2797 library versions): added offsetof() hackery which attempts to divine
2798 where glibc maintainers put uc_mcontext today
2799 * fixed bug 282: compiler does not trust type assertions while passing
2800 arguments to a full call.
2801 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2802 &OPTIONAL VALUES type parameter.
2803 * fix bug 214: algorithm for noting rejected templates is now more
2804 similar to that of template seletion. (also reported by rydis on
2806 * fixed bug 141b: printing backquoted information readably and prettily
2807 inserts a space where necessary.
2808 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2809 (CHARACTER 10) are now reported as errors, rather than propagated
2810 as unknown types. (reported by piso on #lisp)
2811 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2812 with values NIL and :ERROR. (thanks to Milan Zamazal)
2813 * fixed bug 191c: CLOS now does proper keyword argument checking as
2814 described in CLHS 7.6.5 and 7.6.5.1.
2815 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2816 longer raise an error; further, using a list as a for-as-arithmetic
2817 counter now raises a meaningful error.
2818 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2819 now understood by sequence creation functions such as MAKE-SEQUENCE
2821 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2822 a STRING-INPUT-STREAM.
2823 * compiler enhancement: SIGNUM is now better able to derive the type
2825 * type declarations inside WITH-SLOTS are checked. (reported by
2827 * fixed some bugs revealed by Paul Dietz' test suite:
2828 ** incorrect optimization of TRUNCATE for a positive first
2829 argument and negative second.
2830 ** compiler failure in let-convertion during flushing dead code.
2831 ** compiler failure while deriving type of TRUNCATE on an
2832 interval, containing 0.
2833 ** ASH of a negative bignum by a negative bignum count now returns
2835 ** intersection of CONS types now canonicalizes properly, fixing
2836 inconsistencies in SUBTYPEP.
2838 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2839 * incompatible change: The --disable-debugger command line
2840 option now clobbers the debugger at a more fundamental
2841 level, by redefining #'INVOKE-DEBUGGER instead of by
2842 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2843 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2844 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2845 enter the debugger REPL and then suffer recursive errors
2846 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2847 while under the new system, BREAK in --disable-debugger mode
2848 terminates the system just as an unhandled error would.
2849 * fixed compiler performance when processing loops with a step >1;
2850 * bug fix: DOCUMENTATION now retrieves generic function
2851 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2852 support has been systematized, and now supports the methods
2853 specified by ANSI, along with a default method and a method for
2854 slot documentation. (reported by Nathan Froyd)
2855 * bug fix: effective methods associated with a generic function are
2856 no longer cached over a change of that generic function's method
2857 combination. (reported by Andreas Fuchs)
2858 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2859 names a non-existent directory. (thanks to Andreas Fuchs)
2860 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2861 the PPC platform, lead to stack corruption; this has been fixed.
2862 (reported by Rainer Joswig)
2863 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2864 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2865 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2866 arithmetic in general, is now much more reliable on the PPC
2868 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2869 platform now returns the right answer.
2870 * optimization: restored some effective method precomputation in
2871 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2872 precomputation is now tunable.
2873 * optimization: compiler-internal data structure use has been
2874 reviewed, and changes have been made that should improve the
2875 performance of the compiler by about 20%.
2876 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2877 simple-base-strings and simple-bit-vectors is improved.
2878 * optimization: the optimization of 32-bit logical and arithmetic
2879 functions introduced in version 0.8.3 on the x86 has been
2880 implemented on the mips, ppc and sparc platforms; an
2881 implementation of the same facility, but for 64-bit arithmetic,
2882 has been added for the alpha.
2883 * microoptimization: the compiler is better able to make use of the
2884 x86 LEA instruction for multiplication by constants.
2885 * bug fix: in some situations compiler did not report usage of
2886 generic arithmetic in (SPEED 3) policy.
2887 * bug 145b fix: compiler used wrong type specifier while converting
2888 MEMBER-types to numeric.
2889 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2891 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2892 index argument now works properly on the Alpha platform.
2893 * bug fix: floating point exception treatment on the Alpha platform
2895 * bug fix: FILE-POSITION works much better on string input and
2896 output streams. (thanks to Nikodemus Siivola)
2897 * bug fix: many threading/garbage collection symptoms sorted.
2898 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2899 might be pseudo-atomic.
2900 * internal change: Stopping for GC is now done with signals not
2901 ptrace. GC is now done in whichever thread wanted it, instead of
2903 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2905 * bug fix: result form in DO is not contained in the implicit
2907 * incompatible change: ICR structure is changed; the value part of
2908 CONTINUATION is now called LVAR; corresponding functions are
2909 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2910 * added type deriver for ISQRT (thanks to Robert E. Brown).
2911 * bug fix: better support for loading from the command line when an
2912 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2914 * fixed some bugs revealed by Paul Dietz' test suite:
2915 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2916 ** ROUND and FROUND now give the right answer when given very
2917 small float arguments.
2918 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2920 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2921 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2922 ** LCM should return a non-negative integer.
2923 ** PARSE-INTEGER returned the index of a terminator instead of the
2924 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2925 ** PARSE-INTEGER returned an incorrect index being applied to a
2927 ** LCM with two arguments of 0 returns 0 rather than signalling
2929 ** unsigned addition of a 32-bit constant with the high bit set no
2930 longer causes an internal compiler error on the x86.
2931 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2932 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2933 with negative last argument.
2934 ** byte specifiers with zero size and position no longer cause
2935 an error during type derivation.
2936 ** bignum multiplication on the Alpha platform now returns the
2938 * porting: The system now builds on SuSE AMD64, although it still
2939 generates a 32-bit binary.
2940 * .fasl file incompatibility: The fasl file version number has
2941 been incremented (because of the changes to internal compiler
2942 data structures referred to above).
2944 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2945 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2946 more accurately, on the Darwin kernel running on PowerPC hardware.
2947 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2948 * Compiler code deletion notes now signal a condition of type
2949 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2950 an associated MUFFLE-WARNING restart.
2951 * The compiler now performs limited argument count validation of
2952 constant format strings in FORMAT, and where appropriate in ERROR,
2953 CERROR and WARN. (thanks to Gerd Moellmann)
2954 * New ASDF-INSTALL contrib can be used for automatic download and
2955 installation of third-party Lisp code from CCLAN or other sites
2957 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2958 which forces another thread to execute a function supplied by the
2960 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2961 now accept and act upon their :ELEMENT-TYPE keyword argument.
2962 (reported by Martin Atzmueller, Edi Weitz)
2963 * bug fix: FILE-POSITION now accepts position designators up to
2964 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2965 is the greater. (thanks to Patrik Nordebo)
2966 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2967 Kalle Olavi Niemitalo)
2968 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2969 printable. (reported by Eric Marsden)
2970 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2971 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2972 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2973 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2974 (thanks to Stig Sandoe)
2975 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2976 UNREAD-CHAR now correctly includes the unread character in the
2977 target sequence. (thanks to Gerd Moellmann)
2978 * bug fix in threaded builds: the system can now be suspended and
2979 resumed by shell job control with minimal disruption.
2980 * bug fixes in times and timezones >2038AD
2981 * better handling of "where is GNU make?" problem in build scripts
2982 (thanks to Nikodemus Siivola)
2983 * new optimization: inside a named function any reference to a
2984 function with the same name is considered to be a self-reference;
2985 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2986 optimization quality.
2987 * new optimization on x86: logical functions and + now have
2988 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2989 used when the result is truncated to 32 bits.
2990 * VALUES declaration is partially enabled.
2991 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2992 * fixed some bugs revealed by Paul Dietz' test suite:
2993 ** The system now obeys the constraint imposed by
2994 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2995 types form a lattice under type intersection.
2996 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2997 ** ASSOC now ignores NIL elements in an alist.
2998 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2999 and (1+ MOST-POSITIVE-FIXNUM) answers.
3000 ** The addition of a method with invalid qualifiers to a generic
3001 function does not cause an error to be signalled immediately;
3002 a warning is signalled, and the error is generated only on
3003 calling the generic function.
3004 * changed .fasl file version number, in part to add type codes for
3005 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3006 obscure ANSI requirements
3008 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3009 * fixed bug 148: failure to inline-expand a local function left
3010 garbage, confusing the compiler.
3011 * fixed bugs 3cd: structure slot readers perform type check if the
3012 slot can have an invalid value (i.e. it is either not initialized
3013 or can be written with a less specific slot writer).
3014 * bug fix: the compiler now traps array references to elements off
3015 the end of an array; previously, the bounds checking in some
3016 circumstances could go off-by-one.
3017 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3019 * type declarations for array element types now obey the description
3020 on the CLHS page "Declaration TYPE", as per discussions on
3021 sbcl-help around 2003-05-08. This means that a declaration
3022 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3023 declaration, all references to BAR will be asserted or assumed
3024 (with THE, so dependent on compiler policy) to involve objects of
3025 type FOO. Note that no such declaration is implied in
3026 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3027 * declared types of functions from the "Conditions"
3028 chapter. (reported by Paul Dietz)
3029 * bug fix: CERROR accepts a function as its first argument.
3030 * bug fix: NTH an NTHCDR accept a bignum as index
3031 arguments. (reported by Adam Warner)
3032 * optimization: character compare routines now optimize comparing
3033 against a constant character. (reported by Gilbert Baumann)
3034 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3035 argument now works properly on the MIPS platform.
3036 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3037 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3038 declared to have a functional type, does not cause an error
3040 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3041 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3042 * fixed bug: if last continuation of a deleted block has a
3043 destination, this destination should be deleted too. (reported by
3045 * fixed a bug in the bootstrap process: the host compiler's values
3046 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3047 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3048 test case from Patrik Nordebo)
3049 * improved the ability of the disassembler on the PPC platform to
3050 provide helpful disassembly notes.
3051 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3052 the class in more cases than previously.
3053 * bug fix: FILE-POSITION now understands :START and :END for
3054 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3055 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3056 8) data. (thanks to David Lichteblau)
3057 * bug fix: it is possible to add a method to a generic function
3058 without lambda list.
3059 * bug fix: reader failed to signal END-OF-FILE inside an
3060 object representation. (reported by Nikodemus Siivola)
3061 * fixed some bugs revealed by Paul Dietz' test suite:
3062 ** LAST and [N]BUTLAST should accept a bignum.
3063 ** condition slot accessors are methods.
3064 ** (VECTOR NIL) is a subtype of STRING.
3066 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3067 * minor incompatible change: some nonsensical specialized lambda
3068 lists (used in DEFMETHOD) which were previously ignored now signal
3070 * minor incompatible change: the system is now aware of the types of
3071 variables in the COMMON-LISP package, and will signal errors for
3072 most violations of these type constraints (where previously they
3073 were silently accepted).
3074 * minor incompatible change: COMPILE-FILE now uses the freedom
3075 afforded (ANSI 3.2.2.3) to use derived function types for
3076 functions defined in the same file. This also permits the system
3077 to warn on static type mismatches and function
3078 redefinition. (Currently it does not work with high DEBUG level.)
3079 * minor incompatible change: VALUES declaration is disabled.
3080 * When issuing notes, the compiler now signals a condition of type
3081 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3082 restart for use in user handlers. It is expected that the
3083 COMPILER-NOTE condition will eventually become a condition
3084 supertype to a hierarchy of note types, which will then be
3085 handleable in a similar fashion. However, at the moment, no such
3086 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3087 but it's an implementation detail, not a classification for the
3089 * Changes in type checking closed the following bugs:
3090 ** type checking of unused values (192b, 194d, 203);
3091 ** template selection based on unsafe type assertions (192c, 236);
3092 ** type checking in branches (194bc).
3093 * A short form of VALUES type specifier has ANSI meaning (it has
3094 increased the number of situations when SBCL cannot perform type
3096 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3097 keywords or constants is permissible.
3098 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3099 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3100 classes. (thanks to Antonio Martinez)
3101 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3102 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3103 argument to a pretty-print stream. Instead, it leaves any such
3104 operations to DESCRIBE-OBJECT methods.
3105 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3107 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3108 lambda lists. (thanks to David Lichteblau)
3109 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3110 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3111 (thanks to Gerd Moellmann)
3112 * fixed bug 246: increased compilation speed of long
3113 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3115 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3117 * DEFCONSTANT now throws a condition of type
3118 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3119 constant to a non-EQL value; CONTINUE and ABORT restarts
3120 respectively change and preserve the value.
3121 * fixed bug 63: The code walker, part of the implementation of CLOS,
3122 is now better at handling symbol macros.
3123 * bug fix: There is no longer an internal implementation type named
3124 CL:LENGTH. (reported by Raymond Toy)
3125 * bug fix: In macro-like defining macros/special operators the
3126 implicit block does not enclose the lambda list.
3127 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3128 enclosed in parentheses) are not suitable as type specifiers, and
3129 their use properly signals an error now.
3130 * bug fix: An argument count mismatch for a type specifier in code
3131 being compiled no longer causes an unhandled error at compile
3132 time, but signals a compile-time warning.
3133 * fixed simple vector readable printing
3134 * bug fix: DESCRIBE takes more care over whether the class
3135 precedence list slot of a class is bound before accessing it.
3136 (reported by Markus Krummenacker)
3137 * bug fix: FORMATTER can successfully compile pretty-printer format
3138 strings which use variants of the ~* directive inside.
3139 * bug fix: SEARCH now applies its TEST predicate to the elements of
3140 the arguments in the correct order. (thanks to Wolfhard Buss)
3141 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3142 in type inference. (thanks to Robert E. Brown)
3143 * bug fix: Reading in symbols with an explicit package name of ""
3144 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3145 * fixed some bugs revealed by Paul Dietz' test suite:
3146 ** NIL is now allowed as a structure slot name.
3147 ** Arbitrary numbers, not just REALs, are allowed in certain
3148 circumstances in LOOP for-as-arithmetic clauses.
3149 ** Multiple class redefinitions before slot access no longer
3150 causes a type error.
3151 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3152 association between the name and a class.
3153 ** Generic functions with non-standard method-combination and over
3154 five methods all of which return constants no longer return NIL
3155 after the first few invocations. (thanks to Gerd Moellmann)
3156 ** CALL-NEXT-METHOD with no arguments now passes the original
3157 values of the arguments, even in the presence of assignment.
3158 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3160 ** DISASSEMBLE works with closures and funcallable instances.
3161 ** ADD-METHOD now returns the generic function, not the new method.
3162 ** FIND-METHOD signals an error if the lengths of the specializers
3163 is incompatible with the generic function, even if the ERRORP
3165 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3166 which its argument is a member.
3167 ** DEFCLASS only redefines the class named by its class-name
3168 argument if that name is the proper name of the class;
3169 otherwise, it creates a new class.
3170 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3171 of the UNBOUND-SLOT condition to the name of the slot.
3172 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3173 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3174 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3175 SLOT-MAKUNBOUND in the specified fashion.
3177 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3178 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3179 cross-compilation host. As a consequence, we can now bootstrap our
3180 way up to SBCL starting with a bare gcc toolchain and human-readable
3181 source code (first the source to CLISP, then the source to SBCL).
3182 * A contributed module containing a partial implementation of the
3183 simple-streams interface has been included. (thanks to Rudi
3185 * A contributed module implementing the RFC1321 Message Digest
3186 Algorithm, known as MD5, has been included.
3187 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3188 no longer has any effect, as the code controlled by this feature
3189 has been deleted. (As far as we know, no-one has ever built using
3190 this feature, and its semantics were confused in any case).
3191 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3192 work on conditions (as required by the ANSI specification),
3193 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3194 expected behaviour on conditions. Users should note, however,
3195 that such behaviour is not required by the ANSI specification,
3196 and so use of this behaviour may render their code unportable.
3197 * fixed some bugs revealed by Paul Dietz' test suite:
3198 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3200 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3201 ** SXHASH on condition objects no longer returns NIL.
3202 ** :ALLOCATION :CLASS slots are better treated; their values are
3203 updated on class redefinition, and initforms inherited from
3204 superclasses are applied.
3205 ** REMOVE-METHOD returns its generic function argument even when
3206 no method was removed.
3207 ** SHARED-INITIALIZE now initializes the values of the requested
3208 slots, including those with :ALLOCATION :CLASS.
3209 ** ALLOCATE-INSTANCE now works on structure classes defined via
3210 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3212 ** SLOT-EXISTS-P now works on conditions, as well as structures
3214 ** MAKE-LOAD-FORM now has the required methods on
3215 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3216 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3217 keyword, and now implements the SLOT-NAMES argument.
3218 ** methods with &OPTIONAL arguments no longer allow too many
3219 arguments to be passed in the call without error.
3220 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3221 option is consistent with the required arguments of the generic
3222 function lambda list.
3223 * bug fix: REQUIRE accepts a string designator. (Thanks to
3225 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3226 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3227 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3228 * bug fix: The compiler now checks for duplicated variables in macro
3230 * bug fix: SETQ on globals returns the correct value.
3231 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3232 not a COMPILER-ERROR (followed by some other strange error on
3233 choosing the CONTINUE restart).
3234 * bug fix: make.sh and friends are now more consistent in the way that
3235 they look for GNU "make".
3237 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3238 * experimental native threads support (on x86 Linux >=2.4 only).
3239 This is not compiled in by default: you need to add :SB-THREAD to
3240 the target features. See the "Beyond ANSI" chapter of the manual
3242 * fix for longstanding nonANSIism: The old distinction between
3243 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3244 The return value from CL:FIND-CLASS is now a CLOS class, and
3245 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3246 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3247 * An interface to the MetaObject Protocol, as described in Kiczales,
3248 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3249 MIT Press, 1991, is available from the SB-MOP package.
3250 * incompatible change: the SB-PCL package should now be considered
3251 a private implementation detail, and no longer a semi-private MOP
3253 * minor incompatible change: due to rearrangement for threads, the
3254 control stack and binding stack are now allocated at arbitrary
3255 addresses instead of being hardcoded per-port. Users affected by
3256 this probably have to be doing advanced things with shared
3257 libraries, and will know who they are.
3258 * minor incompatible change: Previously, all --eval forms used were
3259 processed with READ before any of them were processed with EVAL.
3260 Now each --eval form is processed with both READ and EVAL before
3261 the next --eval form is processed. (Thus package operations like
3262 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3263 work as the user might reasonably expect.)
3264 * minor incompatible change: *STANDARD-INPUT* is now only an
3265 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3267 * minor incompatible change: Y-OR-N-P is now character-oriented,
3268 not line oriented. Also, YES-OR-NO-P now works without errors.
3269 (thanks to Antonio Martinez)
3270 * sb-aclrepl module improvements: an integrated inspector, added
3271 repl features, and a bug fix to :trace command.
3272 * Known functions, which cannot be open coded by the backend, are
3273 considered to be able to check types of their arguments. (fixing
3274 a bug report by Nathan J. Froyd)
3275 * fixed a bug in computing method discriminating functions: It is
3276 now possible to define methods specialized on classes which have
3277 forward-referenced superclasses. (thanks to Gerd Moellmann)
3278 * fixed evaluation order in optional entries (reported by Gilbert
3280 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3281 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3282 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3283 required-by-AMOP NAME argument, as well as CLASS and
3284 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3285 * fixed bug 20: DEFMETHOD can define methods using names that are
3286 not the proper names of classes to designate class specializers.
3287 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3288 Unix file descriptors, instead of blowing up. (thanks to Antonio
3290 * Garbage collection refactoring: user-visible change is that a
3291 call to the GC function during WITHOUT-GCING will not do garbage
3292 collection until the end of the WITHOUT-GCING. If you were doing
3293 this you were probably losing anyway.
3294 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3295 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3296 TYPEP the latter but not the former.
3297 * The compiler issues a full WARNING for calls to undefined functions
3298 with names from the CL package.
3299 * MAP-INTO for a vector destination is open coded. (reported by
3300 Brian Downing on c.l.l)
3301 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3302 documentation string.
3303 * fixed some bugs revealed by Paul Dietz' test suite:
3304 ** COPY-ALIST now signals an error if its argument is a dotted
3306 ** Condition slots are now accessed more correctly in the presence
3307 of multiple initargs for a given slot.
3308 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3309 exclude restarts of the same name associated with a different
3311 ** DEFCLASS of forward-referenced classes with another
3312 forward-referenced class in the superclasses list no longer
3314 ** Condition slots are now initialized once each, not multiple
3315 times. (thanks to Gerd Moellmann)
3316 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3318 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3319 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3320 arguments contain duplicated elements.
3321 ** RESTART-CASE understands local macros.
3322 ** RESTART-CASE associates exactly its own restarts with a condition.
3323 ** ENDP in safe mode checks its argument to be of type LIST.
3324 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3325 in question is unbound.
3326 ** Optimized MAKE-INSTANCE functions no longer cause internal
3327 assertion failures in the presence of duplicate initargs.
3328 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3329 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3330 propagated even in the ctor optimized implementation of
3332 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3334 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3335 * a better implementation of SXHASH on (simple) bit vectors,
3336 measured both in execution speed and in distribution of results
3337 over the positive fixnums, has been installed. Likewise, a better
3338 implementation of EQUAL for simple bit vectors is now available.
3339 * fixed CEILING optimization for a divisor of form 2^k.
3340 * fixed bug 240 (emitting extra style warnings "using the lexical
3341 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3342 by Antonio Martinez)
3343 * fixed SXHASH, giving different results for NIL depending on type
3344 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3345 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3346 variable. (found by Rolf Wester)
3347 * SBCL does not ignore type declarations for special
3348 variables. (reported by rif on c.l.l 2003-03-05)
3349 * some bug fixes in contrib/sb-aclrepl/
3350 * fixed some bugs revealed by Paul Dietz' test suite:
3351 ** a bug in the CONS type specifier, whereby the CAR and CDR
3352 types got intertwined, has been fixed;
3353 ** the type system is now able to reason about the interaction
3354 between INTEGER and RATIO types more completely;
3355 ** APPEND, [N]REVERSE and NRECONC check that those their
3356 arguments, which must be proper lists, are really so;
3357 ** An array specialized to be unable to hold elements has been
3358 implemented, as required -- yes, really -- by ANSI;
3359 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3360 on malformed property lists;
3362 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3363 * incompatible packaging change: in line with Unix convention,
3364 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3365 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3366 * REQUIRE and PROVIDE are now optionally capable of doing something
3367 useful. See the documentation string for REQUIRE.
3368 * infrastructure for a managed SBCL contrib system: contributed
3369 modules in this release include:
3370 ** the ASDF system definition facility;
3371 ** an interface to the BSD Sockets API;
3372 ** an ACL-like convenience interface to the repl;
3373 (thanks to Kevin Rosenberg)
3374 ** an implementation of ROTATE-BYTE, with efficient implementation
3376 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3377 gives a closer approximation to the right answer than previously.
3378 (thanks to Raymond Toy)
3379 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3380 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3381 optional environment arguments, as required by ANSI.
3382 * fixed bugs in other functions taking environment objects, allowing
3383 calls with an explicit NIL environment argument to be compiled
3385 * fixed bug 228: primary return values from
3386 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3387 COMPILE or FUNCTION.
3388 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3389 :TYPE will no longer signal errors on innocuous objects.
3390 * fixed bug 231b: SETQ is better at respecting type declarations in
3391 the lexical environment.
3392 * fixed a bug in DEFCLASS: classes named by symbols with no or
3393 unprintable packages can now be defined.
3394 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3395 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3396 * fixed compiler failure related to checking types of functions.
3397 (reported by Robert E. Brown)
3398 * the compiler is now much more consistent in its error-checking
3399 treatment of bounding index arguments to sequence functions: in
3400 (SAFETY 3) code, errors will be signalled in almost all cases if
3401 invalid sequence bounding indices are passed to functions defined
3402 by ANSI to operate on sequences.
3403 * fixed a bug in the build procedure: documentation of SBCL-specific
3404 packages is now preserved and available in the final Lisp image.
3405 * lifted FDEFINITION lookup out of loops in the implementation of
3406 many list operations. (thanks to Robert E. Brown)
3407 * fixed a bug in the reader: the #n# reader macro now works for
3408 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3409 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3410 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3411 E. Brown and Tony Martinez respectively)
3412 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3413 SLOT-BOUNDP: in particular, it is now able to optimize them much
3414 better, and is now not vulnerable to having packages renamed.
3415 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3416 always called when a slot is not present in an instance. (thanks
3418 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3419 longer signal an error on unreading a character following EOF on
3420 the previous constituent stream. (thanks to Tony Martinez)
3421 * fixed some bugs revealed by Paul Dietz' test suite:
3422 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3423 not just nonnegative fixnums;
3424 ** the logical bit-array operators such as BIT-AND now accept an
3425 explicit NIL for their "opt-arg" argument (to indicate a
3426 freshly-consed result bit-array);
3427 ** ELT now signals an error on an invalid sequence index in safe
3429 ** the type system is now cleverer about negations of numeric
3430 types, and consequently understands the BIGNUM and RATIO types
3432 ** the type system is now cleverer about the interaction between
3433 INTEGER and RATIO types: while bugs still remain, many more
3434 cases are accurately computed;
3435 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3436 if it is in the last clause;
3437 ** CONSTANTLY now correctly returns a side-effect-free function in
3439 ** DECLARE is no longer treated as a special-operator; in
3440 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3441 * incremented fasl file version number due to the change in the
3442 DEFSTRUCT-SLOT-DESCRIPTION structure.
3444 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3445 * minor incompatible change: code processed by the "interpreter" or
3446 EVAL now has a compilation optimization policy of (DEBUG 2)
3447 (changed from (DEBUG 1)) to improve debuggability of interactive
3448 development, and to allow the use of the debug RETURN command in
3450 * an experimental implementation of the RETURN command for the
3451 debugger has been included. (thanks to Frederik Kuivinen)
3452 * fixed bug 62: constraints were not propagated into a loop.
3453 * fixed bug in embedded calls of SORT (reported and investigated by
3455 * fixed some bugs revealed by Paul Dietz' test suite:
3456 ** printing and reading of arrays with some dimensions having
3457 length 0 (thanks to Gerd Moellmann);
3458 ** BOA constructor with &AUX argument without a default value does
3459 not cause a type error;
3460 ** CONSTANTP now returns true for all self-evaluating objects.
3462 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3463 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3464 accessors that are related by inheritance, as specified in the
3465 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3466 Valtteri Vuorikoski)
3467 * The compiler is now able to inline functions that were defined in
3468 a complex lexical environment (e.g. inside a MACROLET).
3469 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3471 * Support for the upcoming FreeBSD-5.0 release has been included.
3472 (thanks to Dag-Erling Smorgrav)
3473 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3474 effect when it is not in a toplevel context.
3475 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3476 stand a better chance of being correct. (thanks to Gerd
3478 * fixed bug in COERCE, which now signals an error on coercing a
3479 rational to a bounded real type which excludes the expected
3481 * The compiler is now able to derive types more accurately from the
3482 COERCE and COMPILE functions.
3483 * fixed bug 223: functional binding is considered to be constant
3484 only for symbols in the CL package.
3485 * fixed bug 231: SETQ did not check the type of a variable being set
3486 (reported by Robert E. Brown)
3487 * A new optimization for MAKE-INSTANCE has been included, fixing
3488 various bugs (including relating to :ALLOCATION :CLASS slots and
3489 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3491 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3492 ** As required by ANSI, LOOP now disallows anonymous collection
3493 clauses such as COLLECT I in conjunction with aggregate boolean
3494 clauses such as THEREIS (= I 1);
3495 ** LOOP now signals an error when any variable is reused in the
3496 same loop (including the potentially useful construct analogous
3497 to WITH A = 1 WITH A = (1+ A);
3498 ** IT is only a special loop symbol within the first clause of a
3499 conditional loop clause;
3500 ** LOOP with a typed iteration variable over a hashtable now
3501 signals a type error iff it should.
3502 * fixed some other bugs revealed by Paul Dietz' test suite:
3503 ** FILE-STREAM now names the class previously known as FD-STREAM;
3504 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3505 argument) no longer signals an error;
3506 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3507 of the slot symbol, rather than using the current package
3508 ((:CONC-NAME "") continues to intern the slot's name in the
3510 * incremented fasl file version number, because of the incompatible
3511 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3512 of the new implementation of DEFINE-COMPILER-MACRO.
3514 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3515 * Support for building SBCL for MIPS platforms running in
3516 little-endian mode has now been checked in, and basic
3517 functionality on said platforms verified.
3518 * minor incompatible change: PCL now records the pathname of a file
3519 in which methods and the like are defined, rather than its
3521 * minor incompatible change: TRUENAME now considers the truename of
3522 a file naming a directory to be the pathname with :DIRECTORY
3523 component indicating that directory.
3524 * minor incompatible change: a NAMED clause in the extended form of
3525 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3526 reason for the previous behaviour is unclear.
3527 * more systematization and improvement of CLOS and MOP conformance
3528 in PCL (thanks to Gerd Moellman and Pierre Mai):
3529 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3531 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3532 primary methods with no specializers;
3533 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3535 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3536 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3537 FORWARD-REFERENCED-CLASSes; error reporting on
3538 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3540 ** SXHASH on CLOS instances now uses a slot internal to the
3541 instance to return different numbers on distinct instances,
3542 while preserving the same return value through invocations of
3544 ** DEFMETHOD signals errors when methods with longer incongruent
3545 lambda lists are added to generic functions;
3546 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3547 CLASS, as specified in AMOP;
3548 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3549 on the order returned by the primary method for classes of
3550 class STANDARD-CLASS;
3551 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3552 * fixed some bugs shown by Paul Dietz' test suite:
3553 ** DOLIST puts its body in TAGBODY;
3554 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3556 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3557 value producing form;
3558 ** if more variables are given to PROGV than values, extra
3559 variables are bound and made to have no value;
3560 ** NSUBSTITUTE on list arguments gets the right answer with
3562 ** ELT signals an error of type TYPE-ERROR when the index argument
3563 is not a valid sequence index;
3564 ** LOOP signals (at macroexpansion time) an error of type
3565 PROGRAM-ERROR when duplicate variable names are found;
3566 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3567 ** FUNCALL of special-operators now cause an error of type
3569 ** PSETQ now works as required in the presence of side-effecting
3570 symbol-macro places;
3571 ** NCONC accepts any object as its last argument;
3572 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3574 ** loop-for-as-package does not require a package to be explicitely
3576 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3578 * fixed bug 166: compiler preserves "there is a way to go"
3579 invariant when deleting code.
3580 * fixed bug 172: macro lambda lists with required arguments after
3581 &REST arguments now cause an error to be signalled. (thanks to
3583 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3584 bug. (thanks to Matthew Danish)
3585 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3587 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3588 arguments are lexically rebound. (thanks to Gerd Moellmann and
3590 * fixed bug 194: error messages are now more informative when there
3591 is no primary method applicable in a call to a generic
3592 function. (thanks to Gerd Moellmann)
3593 * fixed bug in command line argument checking (thanks to Julian
3595 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3596 (thanks to Matthew Danish)
3597 * incremented fasl file version number, because of the
3598 SXHASH-related changes in the layout of CLOS data structures
3600 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3601 * minor incompatible change: The runtime (the Unix executable named
3602 "sbcl") is now much pickier about the .core files it will load.
3603 Essentially it now requires .core files to descend from the same
3604 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3605 as the runtime does. (The intent is to prevent the crashes which
3606 can occur, and which can even be reported as mysterious failures,
3607 when people patch the sources or change the build parameters
3608 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3609 sbcl and .core files.)
3610 * fixed bug: VALUES-LIST is no longer optimized away.
3611 * fixed bug 142: The FFI conversion of C string values to Lisp
3612 string values no longer conses excessively. (thanks to Nathan
3613 Froyd porting Raymond Toy's fix to CMU CL)
3614 * began to systematize and improve MOP conformance in PCL (thanks to
3615 Nathan Froyd, Gerd Moellman and Pierre Mai):
3616 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3618 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3619 ** FINALIZE-INHERITANCE is now called on class finalization;
3620 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3621 argument precedence order.
3622 * fixed bug 202: The compiler no longer fails on functions whose
3623 derived types contradict their declared type.
3624 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3625 so it can be non-toplevel.
3626 * The fasl file version number has changed (because of the new
3627 implementation of DEFMACRO).
3628 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3629 safe code, that any length requirement by their type-specifier
3630 argument is valid. The exceptions to this are described in bug
3632 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3633 functions now check the types of their inputs as required by ANSI.
3634 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3635 introduced symbol is DECLAREd to be SPECIAL.
3636 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3637 * fixed bug: :COUNT argument to sequence functions may be negative
3638 * fixed bug: body of DO-SYMBOLS may contain declarations
3639 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3640 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3641 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3642 symbol macro only once
3643 * fixed printing of call frame when argument list is unavailable
3644 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3645 * compiler no longer signals WARNING on unknown keyword
3648 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3649 * A beta-quality port to the mips architecture running Linux,
3650 based on the old CMUCL backend, has been made. It has been tested
3651 on a big-endian kernel, and works sufficiently well to be able to
3652 rebuild itself; it has not been tested in little-endian mode.
3653 * fixed an inconsistency between gencgc.c and purify.c which made
3654 dumping/loading .core files unreliable
3655 * fixed bug 120a: The compiler now deals correctly with IFs where
3656 the consequent is the same as the alternative, instead of
3657 misderiving the return type. (thanks to Alexey Dejneka)
3658 * fixed bug 113: Logical pathnames are now dumpable (the logical
3659 host is resolved at load-time, throwing an error if it is not
3661 * fixed bug 174: FORMAT's error message is slightly clearer when a
3662 non-printing character is used in a format directive.
3663 * fixed several bugs in compiler checking of type declarations, i.e.
3664 violations of the Python "declarations are assertions" principle
3665 (thanks to Alexey Dejneka)
3666 * fixed several bugs in PCL's error checking (thanks to Gerd
3668 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3670 * fixed bug in compilation of functions as first class values
3671 (thanks to Antonio Martinez-Shotton)
3672 * The compiler's handling TYPE-ERRORs which it can prove will
3673 inevitably happen at runtime has been cleaned up and corrected
3674 in several ways. (thanks to Alexey Dejneka)
3675 * improved argument type checking for various basic arithmetic
3676 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3677 lavished on them in the past that they can be compiled in many
3678 ways in different special cases
3679 * fixed bug 181: compiler checks validity of user supplied type
3681 * cleaned up code flushing in optimization: Function calls which
3682 should signal errors for safety purposes (e.g. which ANSI says
3683 should signal errors when their arguments are of incorrect type)
3684 are no longer optimized away.
3685 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3686 * incremented fasl file version number, because changes in the
3687 implementation of sequence functions like COERCE caused
3688 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3689 in old inline expansions) to become undefined. (Actually these
3690 changes were later undone, so we might very well be binary
3691 compatible with 0.7.7 after all, but leaving the version number
3692 incremented seemed like the simplest and most conservative
3695 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3696 * An alpha-quality port to the parisc architecture running Linux,
3697 based on the old CMUCL backend, has been made. This, even more so
3698 than the other backends, should be considered still a work in
3699 progress; known problems include that the Linux kernel in 64-bit
3700 mode does not propagate the correct sigcontext structure to
3701 userspace, and consequently SBCL on a parisc64 kernel will not
3703 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3704 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3705 suppressed.) Also now that the compiler is looking at declarations
3706 in the environment, it checks optimization declarations as well,
3707 and suppresses inlining when (> DEBUG SPEED).
3708 * More fixes have been made to treatment of floating point exception
3709 treatment and other Unix signals. In particular, floating point
3710 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3711 * The detection and handling of control stack exhaustion (infinite
3712 or very deeply nested recursion) has changed. Stack exhaustion
3713 detection is now done by write-protecting pages at the OS level
3714 and applies at all optimization settings; when found, a
3715 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3716 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3717 be caught using IGNORE-ERRORS.
3718 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3719 correctly when transforming recursive LABELS functions to LETs.
3720 (thanks to Alexey Dejneka)
3721 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3722 that are names of constants or global variables.
3723 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3724 alien routines with docstrings.
3725 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3726 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3728 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3729 (thanks to Eric Marsden)
3730 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3731 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3732 * Bug fix: The SPARC backend can now compile functions involving
3733 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3734 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3735 to a functions expecting a PATHNAME-DESIGNATOR.
3736 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3737 lambda lists. (thanks to Alexey Dejneka)
3738 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3739 functions so that EXPORTing the name of the class doesn't cause
3740 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3741 to Antonio Martinez for reporting this)
3742 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3743 constant-folded without failing an assertion. (thanks to Einar
3744 Floystad Dorum for reporting this)
3745 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3746 types are now dealt with more correctly by the compiler.
3747 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3748 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3749 behaviour analogous to RENAME-FILE. This puts its behaviour more
3750 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3752 * The fasl file version number has changed again. (because of the
3753 bug fix involving the names of PCL MAKE-INSTANCE functions)
3755 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3756 * bug fix: Floating point exceptions are treated much more
3757 consistently on the x86/Linux and PPC/Linux platforms.
3758 * Array initialization with :INITIAL-ELEMENT is now much faster for
3759 cases when the compiler cannot open code the array creation, but
3760 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3761 array accesses have also seen a speed increase.
3762 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3763 specified. (This was at the root of some bad interactions between
3764 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3766 * bug fix: Internal error arguments for undefined functions are now
3767 computed correctly on the PPC/Linux platform.
3768 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3769 Raymond Toy's patch for CMU CL)
3770 * Support for the Solaris 9 operating environment has been included
3771 (thanks to Daniel Merritt)
3772 * A very ugly but hopefully complete draft of the missing FFI chapter
3773 of the manual has been created by reformatting the corresponding
3774 CMU CL manual chapter into (currently very ugly and incoherent)
3775 DocBook and bringing it up to date for SBCL behavior. Thus, the
3776 manual is now essentially complete, at least by my extreme
3777 once-and-only-once standards, whereby it's acceptable to refer to
3778 the doc strings of SB-EXT functions as the primary documentation.
3779 * The fasl file version number has changed again, due to cleanup of
3780 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3781 is no longer a static symbol.)
3783 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3784 * SBCL now builds with OpenMCL (version 0.12) as the
3785 cross-compilation host; also, more progress has been made toward
3786 bootstrapping under CLISP.
3787 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3789 * bug 158 fixed: The compiler can now deal with integer loop
3790 increments different from 1; fixing this turned out also to fix
3792 * bug 169 fixed: no more bogus warnings about using lexical bindings
3793 despite the presence of perfectly good SPECIAL declarations (thanks
3794 to David Lichteblau)
3795 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3796 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3797 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3799 * bug 180 fixed: Method combination specifications no longer ignore
3800 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3801 * bug fix: Structure type predicate functions now check their argument
3802 count as they should.
3803 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3804 correctly. (thanks to Pierre Mai)
3805 * minor incompatible change: The --noprogrammer option is deprecated
3806 in favor of the new --disable-debugger option, which is very similar.
3807 (The major difference is that it takes effect at a slightly different
3808 time at startup, causing handling of errors in --sysinit and
3809 --userinit files will be affected differently.) The
3810 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3811 been added to allow this functionality to be controlled from ordinary
3812 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3813 maintainers, who might want to run non-interactive scripts to
3814 build SBCL cores which will later be used interactively.)
3815 * minor incompatible change: The LOAD function no longer, when given
3816 a wild pathname to load, loads all files matching that pathname.
3817 Instead, an error of type FILE-ERROR is signalled.
3819 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3820 * bug 147 fixed: The compiler preserves its block link/count
3821 invariants more correctly now so that it doesn't crash. (thanks
3823 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3825 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3826 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3827 no-value-for-this-character as NIL (as specified by ANSI).
3828 * HOST-NAMESTRING on physical pathnames now returns a string that is
3829 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3830 (thanks to Christophe Rhodes)
3831 * The Alpha port handles icache flushing more correctly. (thanks to
3833 * More progress has been made toward bootstrapping under CLISP. (thanks
3834 to Christophe Rhodes)
3835 * The fasl file format has changed again, because dynamic loading
3836 on OpenBSD (which has non-ELF object files) motivated some cleanups
3837 in the way that foreign symbols are transformed and passed around.
3838 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3839 is no longer treated as whitespace by the reader, but instead as
3840 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3841 |A
\7fB|, instead of A as it used to.
3843 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3844 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3845 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3846 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3847 this as of 0.7.1.45, but was left out of the previous news section
3848 (thanks to Dan Barlow)
3849 * SBCL now runs on the Solaris operating system on SPARC architectures
3850 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3851 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3852 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3853 * SPARC backend cleanups, allowing builds of cores optimized for V8
3854 and V9 SPARCS, and also emission of code targeted to a particular
3855 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3857 * SBCL is closer to bootstrapping under CLISP, thanks to various
3858 fixes by Christophe Rhodes.
3859 * The fasl file format has changed again, to allow the compiler's
3860 INFO database to support symbol macros.
3861 * The user manual (in doc/) is formatted into HTML more nicely.
3862 (thanks to coreythomas)
3863 * The system is smarter about SUBTYPEP relationships, especially
3864 those involving NOT types (including types such as ATOM which are
3865 represented internally using NOT types). Thus SUBTYPEP is less
3866 likely to return (VALUES NIL NIL) in general, and in particular
3867 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3869 * The fasl file format has changed again, because the internal
3870 representation of types now includes a new slot to support the new
3871 SUBTYPEP-of-NOT-types logic.
3872 * (not a change in the main branch of SBCL, but a related prototype
3873 which can hopefully be merged into the main branch of SBCL in the
3874 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3875 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3876 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3877 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3878 dispatch macro character combinations. (thanks to Alexey Dejneka)
3879 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3880 that superficially look like logical namestrings correctly.
3881 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3883 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3884 default supplied-p) for &optional and &key arguments. (thanks to
3887 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3888 * incompatible change: The compiler is now less aggressive about
3889 tail call optimization, doing it only when (> SPACE DEBUG) or
3890 (> SPEED DEBUG). (This is an incompatible change because there are
3891 programs which relied on the old CMU-CL-style behavior to optimize
3892 away their unbounded recursion which will now die of stack overflow.)
3893 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3894 for non-GENCGC systems has been increased to 20M (since that
3895 seems much closer to the likely performance optimum for modern
3896 systems than the old 4M value was)
3897 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3898 and *DEBUG-PRINT-LEVEL*
3899 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3900 of CMU CL's support for SPARC, and various endianness and other
3901 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3902 * new syntactic sugar for the Unix command line: --load foo.bar is now
3903 an alternate notation for --eval '(load "foo.bar")'.
3905 ** The system now detects stack overflow and handles it gracefully,
3906 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3907 optimization settings. (This is a good thing in general, and
3908 its introduction in this version should be particularly timely
3909 for anyone whose code fails because of suppression of tail
3911 ** The system now hunts for the C variable "environ" in a more
3912 devious way, to avoid segfaults when the C library version differs
3913 between compile time and run time. (thanks to Christophe Rhodes)
3914 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3915 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3916 ** The compiler no longer issues bogus style warnings for undefined
3917 classes in the same source file as the DEFCLASSes which defined
3918 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3920 ** fixes in CONDITION class precedence list for undefined function
3921 errors (thanks to Alexei Dejneka)
3922 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3923 correctly. (thanks to Dan Barlow)
3924 ** portability fixes aiming at bootstrapping under CLISP (thanks
3925 to Dave McDonald and Christophe Rhodes)
3926 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3927 ** fixes in type translation and and type inference (thanks to
3929 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3930 ** various fixes in the new ports (thanks to Dan Barlow)
3931 * several changes related to debugging:
3932 ** suppression of tail recursion, as noted above
3933 ** stack overflow detection, as noted above
3934 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3935 is now the default. (For some time encapsulation has been more
3936 reliable than the breakpoint-based :ENCAPSULATE NIL
3937 implementation, at least on X86 systems; and I just noticed that
3938 encapsulation also seems closer to the spirit of the ANSI
3941 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3943 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3944 up properly again. (There was a packaging bug in 0.7.0 which
3945 left their definitions in SB-SYS::LOAD-FOREIGN and
3946 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3947 vital for most things which interface to C-level interfaces,
3948 like extensions working with sockets or databases or
3949 Perl-compatible regexes or whatever, and the need to fix
3950 this bug is the main reason that 0.7.1 was released so
3952 ** DEFGENERIC is now choosier about the methods it redefines, so that
3953 reLOADing a previously-LOADed file containing DEFGENERICs does
3954 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3955 cycle now works as it should. (thanks to Alexey Dejneka)
3956 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3957 fixed by Christophe Rhodes. (He actually submitted this patch
3958 months ago, and I delayed until after 0.7.0.)
3959 ** Bug 111 (internal compiler confusion about runtime checks on
3960 FUNCTION types) was fixed by Alexey Dejneka.
3961 * Some internal cleanups (getting rid of variables which aren't
3962 needed now that the byte interpreter is gone) caused the fasl
3963 file format number to change again.
3965 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3966 * major incompatible change: The default fasl file extension, i.e. the
3967 default extension for files produced by COMPILE-FILE, has changed
3968 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3970 ** There are many changes in the implementation of the compiler.
3971 SBCL is now essentially a compiler-only implementation of ANSI
3972 Common Lisp. EVAL still "interprets" a few special cases, but
3973 almost all the interesting cases are handled by creating
3974 a LAMBDA expression, calling COMPILE on it, then calling
3975 FUNCALL on the result.
3976 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3977 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3978 Since the code is newer, there might still be some new bugs
3979 (though not as many as before Martin Atzmueller's fixes:-). But
3980 the new code is substantially simpler and clearer, and hopefully
3981 any remaining bugs will be simpler, less fundamental, and more
3982 fixable then the bugs in the old code.
3983 ** The revised compiler is still a little unsteady on its feet.
3985 *** The debugging information it produces (particularly the names
3986 of FUNCTION objects) is sometimes much less useful than what
3987 the old compiler produced.
3988 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3989 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3990 within a MACROLET) has been temporarily weakened.
3991 ** There are new compiler optimizations for various functions:
3992 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3993 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3994 *** the math functions TRUNCATE, FLOOR, and CEILING
3995 *** the function-of-all-trades COERCE
3996 Mostly these should be transparent, but there's one
3997 potentially-annoying problem (bug 117): when the compiler
3998 inline-expands a function and does type analysis on the result,
3999 it can create control paths which have type mismatches, and
4000 when it can't prove that those control paths aren't taken,
4001 it will issue WARNINGs about the type mismatches. This is
4002 a particular problem in practice for the new sequence functions.
4003 It's not clear how this should be fixed, and for now, a
4004 workaround is given in the entry for 117 in the BUGS file.
4005 ** (Because of the interaction between the two previous items --
4006 occasional inlining problems and new inline expansions -- some
4007 of the new sequence function optimizations won't really kick in
4008 completely until debugging information, and then inlining, are
4009 straightened out in some future version.)
4010 * minor incompatible changes:
4011 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4012 DIRECTORY no longer implicitly promotes NIL slots of its
4013 pathname argument to :WILD. In particular, when you ask for the
4014 contents of a directory (which you used to be able to do without
4015 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4016 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4017 ** changes in behavior that ANSI explicitly defines to be
4018 implementation dependent:
4019 *** The new compiler-only implementation still conforms with ANSI,
4020 but acts a little different than before. Besides the obvious
4021 changes in performance tradeoffs (that the cost per form passed
4022 to EVAL has gone up, and the cost per form executed by EVAL
4023 has gone down), the behavior of the system changes a little
4024 because there are no longer any interpreted function objects.
4025 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4026 e.g. doing COMPILE on the output of interactive DEFUN is
4028 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4030 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4031 has changed from (:CL) to NIL.
4032 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4033 e.g. #\Newline and #\Tab, don't have names specified in the
4034 ANSI Common Lisp standard, is now based on their ASCII symbolic
4035 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4036 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4037 are no longer used for output.
4038 ** changes in internal implementation constants:
4039 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4040 4 million. (If your application spends a lot of time GCing and
4041 you have a lot of RAM, you might want to experiment with
4042 increasing it even more.)
4043 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4044 However, almost all old code should still continue to work without
4045 immediate update, as SB-C-CALL is now a (deprecated) nickname
4047 ** Old operator names in the style DEF-FOO are now deprecated in
4048 favor of new corresponding names DEFINE-FOO, for consistency with
4049 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4050 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4051 internal symbols, but a few supported extensions like
4052 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4053 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4054 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4055 etc. as you get deeper into recursive calls to the debugger
4056 command loop, instead of the old "5]", "5]]", "5]]]"
4057 sequence. (I was motivated to do this when squabbles between
4058 ILISP and SBCL left me very deeply nested in the debugger. In the
4059 short term, this change will probably provoke more ILISP/SBCL
4060 squabbles, but hopefully it will be an improvement in the long run.)
4061 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4062 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4063 function, since declaiming return types involving aliens is
4064 (1) annoyingly messy to do by hand and (2) vital to efficient
4065 compilation of code which calls such functions.
4066 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4067 longer reexported by the SB-EXT package. They're solely useful
4068 for alien code, so it seems more logical that you should get
4069 them from the SB-ALIEN package, not in SB-EXT.
4070 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4071 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4072 features. Instead, the code that they used to control is always
4073 built into the system.
4074 * many other bug fixes
4075 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4076 advantage of the new EVAL-WHEN stuff and to clean them up in
4077 general, and they are now more ANSI-compliant in a number of
4078 ways. Martin Atzmueller is responsible for a lot of this.
4079 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4081 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4082 *** correct ERROR type for various file operations
4083 *** some fixes for Lisp streams
4084 *** DEFMETHOD syntax checking
4085 *** changing old weird representation of debug information as
4086 strings (which, among their other deficiencies, don't transform
4087 correctly when you rename packages, and don't change their
4088 print representation when you change things like *PACKAGE*
4089 and *PRINT-LENGTH*) to symbols and lists of symbols
4090 He also made several improvements and fixed several bugs in DESCRIBE.
4091 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4093 *** misbehavior of WRITE-STRING/WRITE-LINE
4094 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4095 and several other LOOP problems as well
4096 *** DIRECTORY when similar filenames are present
4097 *** DEFGENERIC with :METHOD options
4098 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4099 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4100 *** argument ordering in FIND with :TEST option
4101 *** mishandled package designator argument in APROPOS-LIST
4102 *** various problems in the backquote readmacro
4103 *** a bug in APROPOS
4104 *** probably some others that I'm not describing very well here,
4105 since the CVS log documents them by reference to sbcl-devel
4106 messages, and the SourceForge archives aren't working well.:-(
4107 ** Dan Barlow improved the Alpha port (and is making progress on the
4108 PPC port, for those of you who think different).
4109 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4110 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4111 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4112 continues to work on the SPARC port (for those of you in a position
4113 to look down upon our little PC-compatible boxes from a great height).
4114 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4115 and uses that copy, rather than the current dynamic value, when
4116 it's trying to decide whether to truncate output. Thus e.g.
4117 (let ((*print-lines* 50))
4118 (pprint-logical-block (stream nil)
4120 (let ((*print-lines* 8))
4121 (print (aref possiblybigthings i) stream)))))
4122 should now truncate the logical block only at 50 lines, instead of
4123 often truncating it at 8 lines, as it did before.
4124 * The doc/cmucl/ directory, containing old CMU CL documentation
4125 from the time of the fork, is no longer part of the base system.
4126 SourceForge has shut down its anonymous FTP service, and with it
4127 my original plan for distributing the old CMU CL documentation
4128 there. For now, if you need these files you can download an old
4129 SBCL source release and extract them from it.
4130 * The fasl file version number changed again, for dozens of reasons,
4131 some of which are apparent above.
4133 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4134 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4135 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4136 patch, so that DISASSEMBLE output is much nicer.
4137 * The code in the SB-PROFILE package now seems reasonably stable.
4138 I still haven't decided what the final interface should look like
4139 (I'd like PROFILE to interact cleanly with TRACE, since both
4140 facilities use function encapsulation) but if you have a need
4141 for profiling now, you can probably use it successfully with
4142 the current CMU-CL-style interface.
4143 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4144 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4145 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4146 link now returns the dangling link itself, and for similar
4147 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4148 link itself. (In these cases the old code signalled an error and
4149 looped endlessly, respectively.) Thus, DIRECTORY now works even
4150 in the presence of dangling and cyclic symbolic links.
4151 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4152 is now a supported extension again, since the consensus on
4153 sbcl-devel was that it can be useful for ordinary development
4154 work, not just for debugging SBCL itself.
4155 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4156 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4157 that currently-defined functions might be redefined later with
4158 different return types.
4159 * Hash tables can be printed readably, as inspired by CMU CL code
4160 of Eric Marsden and SBCL code of Martin Atzmueller.
4161 * better error handling in CLOS method combination, thanks to
4162 Martin Atzmueller porting Pierre Mai's CMU CL patches
4163 * more overflow fixes for >16Mbyte I/O buffers
4164 * A bug in READ has been fixed, so that now a single Ctrl-D
4165 character suffices to cause end-of-file on character streams.
4166 In particular, now you only need one Ctrl-D at the command
4167 line (not two) to exit SBCL.
4168 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4170 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4171 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4172 does the right thing.
4173 * The implementation of some type tests, especially for CONDITION
4174 types, is now tidier and maybe faster, due to CMU CL code
4175 originally by Douglas Crosher, ported by Martin Atzmueller.
4176 * Some math functions have been fixed, and there are new
4177 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4178 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4179 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4180 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4181 likely to be built into sbcl-0.7.0.)
4182 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4183 CL, ported to SBCL by Martin Atzmueller)
4184 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4185 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4186 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4187 * There's a new slam.sh hack to shorten the edit/compile/debug
4188 cycle for low-level changes to SBCL itself, and a new
4189 :SB-AFTER-XC-CORE target feature to control the generation of
4190 the after-xc.core file needed by slam.sh.
4191 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4192 COMPILE-FILE is no longer supported, so that now every function
4193 gets an entry point, so that block compilation looks a little
4194 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4195 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4196 returns the number of bytes consed since the system started,
4197 rather than the number consed since the first time the function
4198 was called. (The new definition parallels ANSI functions like
4199 CL:GET-INTERNAL-RUN-TIME.)
4200 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4201 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4202 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4203 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4204 * Fasl file version numbers are now independent of the target CPU,
4205 since historically most system changes which required version
4206 number changes have affected all CPUs equally. Similarly,
4207 the byte fasl file version is now equal to the ordinary
4210 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4211 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4212 is no longer recognized. I apologize for this, because it was
4213 listed in SB-EXT as a supported extension, but I found that
4214 its existing behavior was poorly specified, as well as incorrectly
4215 specified, and it looked like too much of a mess to straighten it
4216 out. I have enough on my hands trying to get ANSI stuff to work..
4217 * many patches ported from CMU CL by Martin Atzmueller, with
4218 half a dozen bug fixes in pretty-printing and the debugger, and
4219 half a dozen others elsewhere
4220 * fixed bug 13: Floating point infinities are now supported again.
4221 They might still be a little bit flaky, but thanks to bug reports
4222 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4223 as flaky as they were.
4224 * The --noprogrammer command line option is now supported. (Its
4225 behavior is slightly different in detail from what the old man
4226 page claimed it would do, but it's still appropriate under the
4227 same circumstances that the man page talks about.)
4228 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4229 are now supported, and enabled by default. Thus, the compiler can
4230 handle many floating point and complex operations much less
4231 inefficiently. (Thus e.g. you can implement a complex FFT
4233 * The compiler now detects type mismatches between DECLAIM FTYPE
4234 and DEFUN better, and implements CHECK-TYPE more correctly, and
4235 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4236 thanks to patches from Martin Atzmueller.
4237 * various fixes to make the cross-compiler more portable to
4238 ANSI-conforming-but-different cross-compilation hosts (notably
4239 Lispworks for Windows, following bug reports from Arthur Lemmens)
4240 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4241 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4242 fixed thanks to Pierre Mai's CMU CL patches.
4243 * fixes to keep the system from overflowing internal counters when
4244 it tries to use i/o buffers larger than 16M bytes
4245 * fixed bug 45a: Various internal functions required to support
4246 complex special functions have been merged from CMU CL sources.
4247 (When I was first setting up SBCL, I misunderstood a compile-time
4248 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4249 * improved support for type intersection and union, fixing bug 12
4250 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4251 more obscure bugs as well
4252 * some steps toward byte-compiling non-performance-critical
4253 parts of the system, courtesy of patches from Martin Atzmueller
4254 * Christophe Rhodes has made some debian packages of sbcl at
4255 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4256 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4257 stable, but are nonetheless usable. When he's ready, I'd be happy
4258 to add them to the SourceForge "File Releases" section. (And if
4259 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4260 * new fasl file format version number (because of changes in
4261 internal representation of (OR ..) types to accommodate the new
4262 support for (AND ..) types, among other things)
4264 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4265 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4267 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4269 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4270 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4271 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4272 * DESCRIBE now works on structure objects again.
4273 * Most function call argument type mismatches are now handled as
4274 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4275 know whether the function will be redefined before the call is
4276 executed. (The compiler could flag local calls with full WARNINGs,
4277 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4278 it doesn't keep track of enough information to know whether calls
4279 are local in this sense.)
4280 * Compiler output is now more verbose, with messages truncated
4281 later than before. (There should be some supported way for users
4282 to override the default verbosity, but I haven't decided how to
4283 provide it yet, so this behavior is still controlled by the internal
4284 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4285 src/compiler/ir1util.lisp.)
4286 * Fasl file format version numbers have increased again, because
4287 support for the Gray streams extension changes the layout of the
4288 system's STREAM objects.
4289 * The Gray subclassable streams extension now works, thanks to a
4290 patch from Martin Atzmueller.
4291 * The full LOAD-FOREIGN extension (not just the primitive
4292 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4293 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4294 but like most other programs, it defaults to copying the Unix
4295 environment from the original process instead of starting the
4296 new process in an empty environment.
4297 * Extensions which manipulate the Unix environment now support
4298 an :ENVIRONMENT keyword option which doesn't smash case or
4299 do other bad things. The CMU-CL-style :ENV option is retained
4300 for porting convenience.
4301 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4302 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4304 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4306 * A patch from Martin Atzmueller seems to have solved the SIGINT
4307 problem, and as far as we know, signal-handling now works cleanly.
4308 (If you find any new bugs, please report them!)
4309 * The system no longer defaults Lisp source file names to types
4310 ".l", ".cl", or ".lsp", but only to ".lisp".
4311 * The compiler no longer uses special default file extensions for
4312 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4313 seems to expect a single default extension for all compiled code,
4314 and there's no compelling reason to try to stretch the standard
4315 to allow two different extensions.) Instead, byte-compiled files
4316 default to the same extension as native-compiled files.
4317 * Fasl file format version numbers have increased again, because
4318 a rearrangement of internal implementation packages made some
4319 dumped symbols in old fasl files unreadable in new cores.
4320 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4321 many fewer weird special cases.
4322 * Bug #17 (differing COMPILE-FILE behavior between logical and
4323 physical pathnames) has been fixed, and some related misbehavior too,
4324 thanks to a patch from Martin Atzmueller.
4325 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4326 by Tim Moore, ported to SBCL by Martin Atzmueller.
4327 * Martin Atzmueller fixed several filesystem-related problems,
4328 including bug #36, in part by porting CMU CL patches, which were
4329 written in part by Paul Werkowski.
4330 * More compiler warnings in src/runtime/ are gone, thanks to
4331 more patches from Martin Atzmueller.
4332 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4335 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4337 * DESCRIBE now works on CONDITION objects.
4338 * The debugger now handles errors which arise when trying to print
4339 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4341 * The build system now uses an additional file, customize-target-features.lisp,
4342 to allow local modifications to the target *FEATURES* list. (The point of
4343 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4344 debugging features enabled, without having to worry about propagating it
4345 into everyone's system when I do a "cvs update".) When no
4346 customize-target-features.lisp file exists, the target *FEATURES* list
4347 should be constructed the same way as before.
4348 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4349 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4350 warn about behavior which is undefined under the ANSI spec. Note: This
4351 is specified by ANSI, but it's not very popular with programmers.
4352 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4353 macro in the SBCL sources for an example of a workaround which you
4354 might use to make portable ANSI-standard code which does what you want.
4355 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4356 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4357 when it's used as a non-toplevel form. (This is required in order
4358 to implement the DEFCONSTANT-EQX macro.)
4359 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4360 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4361 funny things, due to bugs in the implementation of EVAL-WHEN
4362 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4363 non-toplevel DEFCONSTANTs are uncommon.)
4364 * The core file version number and fasl file version number have been
4365 incremented, because the old noncompliant DEFCONSTANT behavior involved
4366 calling functions which no longer exist, and because I also took the
4367 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4368 * fixed bug 1 (error handling before read-eval-print loop starts), and
4369 redid debugger restarts and related debugger commands somewhat while
4371 ** The QUIT debugger command is gone, since it did something
4372 rather different than the SB-EXT:QUIT command, and since it never
4373 worked properly outside the main toplevel read/eval/print loop.
4374 Invoking the new TOPLEVEL restart provides the same functionality.
4375 ** The GO debugger command is also gone, since you can just invoke
4376 the CONTINUE restart directly instead.
4377 ** The TOP debugger command is also gone, since it's redundant with the
4378 FRAME 0 command, and since it interfered with abbreviations for the
4380 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4382 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4383 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4384 some porting work by Martin Atzmueller)
4385 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4386 with a boatload of patches which he ported to SBCL. Now that those
4388 ** The system tries to make sure that its low-priority messages
4389 are prefixed by semicolons, to help people who like to use
4390 syntax highlighting in their ILISP buffer. (This patch
4391 was originally due to Raymond Toy.)
4392 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4393 patches originally written by Raymond Toy.
4394 ** The compiler understands coercion between single-value and
4395 multiple-VALUES type expressions better, getting rid of some very
4396 weird behavior, thanks to patches originally by Robert MacLachlan
4397 and Douglas Crosher.
4398 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4399 lambda lists, thanks to a patch originally by Pierre Mai.
4400 ** The system no longer bogusly warns about "abbreviated type
4402 ** The compiler gets less confused by inlining and RETURN-FROM,
4403 thanks to some patches originally by Tim Moore.
4404 ** The system no longer hangs when dumping circular lists to fasl
4405 files, thanks to a patch originally from Douglas Crosher.
4406 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4407 undefined function error.
4408 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4409 in structure slot initforms) for now, documented workaround instead:-|
4410 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4411 * fixed bug 5: added stubs for various Gray stream functions called
4412 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4413 installed, at least appropriate type errors are generated
4414 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4415 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4416 consistently in DEFMETHOD forms.
4417 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4418 it doesn't seem to affect SBCL after all
4419 * The C runtime system now builds with better optimization and many
4420 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4422 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4424 * The system is now under CVS at SourceForge (instead of the
4425 CVS repository on my home machine).
4426 * The new signal handling code has been tweaked to treat register
4427 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4428 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4429 downstream, e.g. in debug-int.lisp, has implicit dependencies
4430 on the unsignedness of integer representation of machine words,
4431 and that caused the system to bomb out with infinite regress
4432 when trying to recover from type errors involving signed values,
4433 e.g. (BUTLAST '(1 2 3) -1).)
4434 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4435 (This was one of the bugs Peter Van Eynde reported back in July.)
4436 * The system now uses code inspired by Colin Walters' O(N)
4437 implementation of MAP (from the cmucl-imp@cons.org mailing
4438 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4439 inline the MAP operation, and there is more than one
4440 sequence argument to the MAP call (so that it can't just
4441 do ETYPECASE once and for all based on the type of the
4442 single sequence argument). (The old non-inline implementation
4443 of the general M-argument sequence-of-length-N case required
4444 O(M*N*N) time when any of the sequence arguments were LISTs.)
4445 * The QUIT :UNIX-CODE keyword argument has been renamed to
4446 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4447 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4449 * Raymond Wiker's patches to port dynamic loading from Linux to
4450 FreeBSD have been added.
4451 * The BUGS file is now more nearly up to date, thanks in large part
4452 to Martin Atzmueller's review of it.
4453 * The debugger now flushes standard output streams before it begins
4454 its output ("debugger invoked" and so forth).
4455 * The core version number and fasl file version number have both
4456 been incremented, because of incompatible changes in the layout
4458 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4459 used to not be called for a saved Lisp image.)
4460 * Martin Atzmueller's version of a patch to fix a compiler crash,
4461 as posted on sbcl-devel 13 September 2000, has been installed.
4462 * Instead of installing Martin Atzmueller's patch for the
4463 compiler transform for SUBSEQ, I deleted the compiler transform,
4464 and transforms for some similar consing operations.
4465 * A bug in signal handling which kept TRACE from working on OpenBSD
4467 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4468 away by constant folding
4469 * The system now defines its address space constants in one place
4470 (in the Lisp sources), and propagates them automatically elsewhere
4471 (through GENESIS and the sbcl.h file). Therefore, patching the
4472 address map is less unnecessarily tedious and error-prone. The
4473 Lisp names of address space constants have also been systematized.
4474 * CVS tags like dollar-Header-dollar have been removed from
4475 the sources, because they have never saved me trouble and
4476 they've been source of trouble working with patches and other
4477 diff-related operations.
4478 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4479 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4481 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4483 * The system has been ported to OpenBSD.
4484 * The system now compiles with a simple "sh make.sh" on the systems
4485 that it's supported on. I.e., now you no longer need to tweak
4486 text in the target-features.lisp-expr and symlinks in src/runtime/
4487 by hand, the make.sh takes care of it for you.
4488 * The system is no longer so grossly inefficient when compiling code
4489 involving vectors implemented as general (not simple) vectors (VECTOR T),
4490 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4491 which dares to use the various sequence functions on non-simple
4492 vectors, takes less of a performance hit.
4493 * There is now a primitive type predicate VECTOR-T-P
4494 to test for the (VECTOR T) type, so that e.g.
4495 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4496 can now be compiled with some semblance of efficiency. (The old code
4497 turned the type declaration into a full call to %TYPEP at runtime!)
4498 * AREF on (VECTOR T) is still not fast, since it's still compiled
4499 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4500 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4501 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4502 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4503 without making full calls to SUBTYPEP at runtime.
4504 (Some analogous efficiency issues for non-simple vectors specialized to
4505 element types other than T, or for non-simple multidimensional arrays,
4506 have not been addressed. They could almost certainly be handled the
4507 same way if anyone is motivated to do so.)
4508 * The changes in array handling break binary compatibility, so
4509 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4510 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4511 instead of (VALUES T T).
4512 * By following the instructions that Dan Barlow posted to sbcl-devel
4513 on 2 July 2000, I was able to enable primitive dynamic object
4514 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4515 functionality is not implemented (since it calls ld to resolve
4516 library references automatically, requiring RUN-PROGRAM for its
4517 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4518 try to resolve library references) is now supported.
4519 * The system now flushes the standard output streams when it terminates,
4520 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4521 them at several other probably-convenient times, e.g. in each pass of
4522 the toplevel read-eval-print loop, and after evaluating a form given
4523 as an "--eval" command-line option. (These changes were motivated by a
4524 discussion of stream flushing issues on cmucl-imp in August 2000.)
4525 * The source transform for TYPEP of array types no longer assumes
4526 that an array whose element type is a not-yet-defined type
4527 is implemented as an array of T, but instead punts, so that the
4528 type will be interpreted at runtime.
4529 * There is now some support for cross-compiling in make.sh: each of
4530 the phases of make.sh has its own script. (This should be transparent
4531 to people doing ordinary, non-cross-compile builds.)
4532 * Since my laptop doesn't have hundreds of megabytes of memory like
4533 my desktop machine, I became more motivated to do some items on
4534 my to-do list in order to reduce the size of the system a little:
4535 ** Arrange for various needed-only-at-cold-init things to be
4536 uninterned after cold init. To support this, those things have
4537 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4538 symbols with such names are now uninterned after cold init).
4539 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4540 fasl files for cold load.
4541 ** Remove the old compiler structure pooling code (which used to
4542 be conditional on the target feature :SB-ALLOC) completely.
4543 ** Redo the representation of some data in cold init to be more compact.
4544 (I also looked into supporting byte compiled code at bootstrap time,
4545 which would probably reduce the size of the system a lot, but that
4546 looked too complicated, so I punted for now.)
4547 * The maximum signal nesting depth in the src/runtime/ support code has
4548 been reduced from 4096 to 256. (I don't know any reason for the very
4549 large old value. If the new smaller value turns out to break something,
4550 I'll probably just bump it back up.)
4551 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4553 * Many, many bugs reported by Peter Van Eynde have been added to
4554 the BUGS list; some have even been fixed.
4555 * While enabling dynamic object file loading, I tried to make the
4556 code easier to understand, renaming various functions and variables
4557 with less ambiguous names, and changing some function calling
4558 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4559 * While trying to figure out how to do the OpenBSD port, I tried to
4560 clean up some of the code in src/runtime/. In particular, I dropped
4561 support for non-POSIX signal handling, added various comments,
4562 tweaked the code to reduce the number of compilation warnings, and
4563 renamed some files to increase consistency.
4564 * To support the new automatic configuration functionality in make.sh,
4565 the source file target-features.lisp-expr has been replaced with the
4566 source file base-target-features.lisp-expr and the machine-generated
4567 file local-target-features.lisp-expr.
4568 * fixed a stupid quoting error in make.sh so that using CMU CL
4569 "lisp -batch" as cross-compilation host works again
4571 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4573 * DESCRIBE no longer tries to call itself recursively to describe
4574 bound/fbound values, so that it no longer fails on symbols which are
4575 bound to themselves (like keywords, T, and NIL).
4576 * DESCRIBE now works on generic functions.
4577 * The printer now prints less-screwed-up representations of closures
4578 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4579 * A private symbol is used instead of the :EMPTY keyword previously
4580 used to mark empty slots in hash tables. Thus
4581 (DEFVAR *HT* (MAKE-HASH-TABLE))
4582 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4583 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4584 now does what ANSI says that it should. (You can still get
4585 similar noncompliant behavior if bang on the hash table
4586 implementation with all the symbols you get back from
4587 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4588 This breaks binary compatibility, since tests for equality to
4589 :EMPTY are wired into things like the macroexpansion of
4590 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4592 * There's now a minimal placeholder implementation for CL:STEP,
4593 as required by ANSI.
4594 * An obscure bug in the interaction of the normal compiler, the byte
4595 compiler, inlining, and structure predicates has been patched
4596 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4597 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4599 * Missing ordinary arguments in a macro call are now detected even
4600 when the macro lambda list contains &KEY or &REST.
4601 * The debugger no longer complains about encountering the top of the
4602 stack when you type "FRAME 0" to explicitly instruct it to go to
4603 the top of the stack. And it now prints the frame you request even
4604 if it's the current frame (instead of saying "You are here.").
4605 * As specified by ANSI, the system now always prints keywords
4606 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4608 * The default initial SIZE of HASH-TABLEs is now smaller.
4609 * Type information from CLOS class dispatch is now propagated
4610 into DEFMETHOD bodies, so that e.g.
4611 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4613 is now basically equivalent to
4614 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4615 (DECLARE (TYPE SINGLE-FLOAT X))
4617 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4618 operation, without having to do run-time type dispatch.
4619 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4620 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4621 * Since I don't seem to be making big file reorganizations very often
4622 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4623 is overflowing my ability to conveniently back them up), I've finally
4624 checked the system into CVS. (The CVS repository is on my home system,
4625 not at SourceForge -- putting it on SourceForge might come later.)
4626 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4627 high-level GC-NOTIFY-FOO functions send their output. (There's
4628 still very little control of where low-level verbose GC functions
4629 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4630 less than it used to -- the GC-NOTIFY-FOO functions are now under
4631 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4632 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4633 in only one place in the source code, and propagates it automatically
4634 everywhere that it's needed. Thus e.g. when I bump the version from
4635 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4636 * The C source files now include boilerplate legalese and documentation
4637 at the head of each file (just as the Lisp source files already did).
4638 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4639 to his page will be replaced with a link to his new CLiki service.
4641 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4643 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4644 * The build process now looks for GNU make under the default name "gmake",
4645 instead of "make" as it used to. If GNU make is not available as "gmake"
4646 on your system, you can change this default behavior by setting the
4647 GNUMAKE environment variable.
4648 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4649 can build without error under CMU CL.
4651 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4653 * There is now a partial SBCL user manual (with some new text and some
4654 text cribbed from the CMU CL manual).
4655 * The beginnings of a profiler have been added (starting with the
4656 CMU CL profiler and simplifying and cleaning up). Eventually the
4657 main interface should be through the TRACE macro, but for now,
4658 it's still accessed through vaguely CMU-CL-style functions and macros
4659 exported from the package SB-PROFILE.
4660 * Some problems left over from porting CMU CL to the new
4661 cross-compilation bootstrap process have been cleaned up:
4662 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4663 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4664 part when getting rid of the compiler *BACKEND* stuff.)
4665 ** The value of *NULL-TYPE* was screwed up, because it was
4666 being initialized before the type system knew the final
4667 definition of the 'NULL type. This screwed up several key
4668 optimizations in the compiler, causing inefficiency in all sorts
4669 of places. (I found it because I wanted to understand why
4670 GET-INTERNAL-RUN-TIME was consing.)
4671 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4672 PROCLAIM FTYPE information. Unfortunately this broke binary
4673 compatibility again, since now the forms output by DEFGENERIC
4674 to refer to functions which didn't exist in 0.6.3.
4675 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4676 can use the new (as of 0.6.3) transform for SOME into MAP into
4678 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4679 values to (INTEGER 0 1000000), so that the time code will no longer
4680 occasionally get blown up by Linux returning 1000000 microseconds
4681 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4682 its output conform to the ANSI spec. (Alas, this makes its output
4683 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4684 * A full call to MAP NIL with a single sequence argument no longer conses.
4685 * fixes to problems pointed out by Martin Atzmueller:
4686 * The manual page no longer talks about multiprocessing as though
4687 it were currently supported.
4688 * The ILISP support patches have been removed from the distribution,
4689 because as of version 5.10.1, ILISP now supports SBCL without us
4690 having to maintain patches.
4691 * added a modified version of Raymond Toy's recent CMU CL patch for
4692 EQUALP comparison of HASH-TABLE
4694 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4696 * The system still can't cross-compile itself with
4697 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4698 entails), but at least it can compile more of itself that way
4699 than it used to be able to, and various buglets which were uncovered
4700 by trying to cross-compile itself that way have now been fixed.
4701 * This release breaks binary compatibility again. This time
4702 at least I've incremented the FASL file format version to 2, so that the
4703 problem can be detected reliably instead of just causing weird errors.
4704 * various new style warnings:
4705 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4706 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4707 ** using the lexical binding of a variable named in the *FOO* style
4708 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4709 as specified by ANSI.
4710 * *RANDOM-STATE* is no longer automatically initialized from
4711 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4712 default behavior of the system is to repeat its behavior every time
4713 it's run. If you'd like to change this behavior, you can always
4714 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4715 old convention there was no comparably easy way to get the system to
4716 repeat its behavior every time it was run.
4717 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4718 FTYPE declarations has been removed, in favor of their ANSI
4719 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4720 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4721 the types of their sequence arguments can be determined at compile time.
4722 This is done through a new open code expansion for MAP which eliminates
4723 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4724 argument types can be determined at compile time.
4725 * The optimizer now transforms COERCE into an identity operation when it
4726 can prove that the coerced object is already of the correct type. (This
4727 can be a win for machine generated code, including the output of other
4728 optimization transforms, such as the MAP transform above.)
4729 * Credit information has been moved from source file headers into CREDITS.
4730 * Source file headers have been made more standard.
4731 * The CASE macro now compiles without complaining even when it has
4734 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4736 * (Note that the way that the PCL macroexpansions were rewritten
4737 to accommodate the change in DEFGENERIC below breaks binary
4738 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4739 not run under sbcl-0.6.2. Once we get out of alpha releases,
4740 i.e. hit release 1.0.0, we'll probably try to maintain binary
4741 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4742 and sbcl-1.4.4. Until then, however, it might be fairly common
4743 for maintenance releases to break binary compatibility.)
4744 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4746 * The reporting of unhandled signals has been changed to print some
4747 explanatory text as well as the report form. (Previously only
4748 the report form was printed.)
4749 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4750 it defines, so that the compiler no longer issues undefined function
4751 warnings for compiled-but-not-yet-loaded generic functions.
4752 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4753 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4754 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4755 section of the ANSI spec are supported.
4756 * The "" nickname for the "KEYWORD" package has been removed.
4757 The reader still handles symbol tokens which begin with a package marker
4758 as keywords, but it doesn't expose its mechanism for doing so in the
4759 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4760 * The system now issues STYLE-WARNINGs for contradictory TYPE
4761 proclamations. (Warnings for contradictory FTYPE proclamations would
4762 be nice too, but those can't be done usefully unless the type system
4763 is made smarter about FUNCTION types.)
4764 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4765 systematized, so that "*target-*.lisp is supposed to exist only on the
4766 target and imply that there's a related file which exists on the
4767 host, and *host-*.lisp is supposed to exist only on the host and imply
4768 that there's a related file which exists on the target. This involves a
4769 lot of renaming. Hopefully the acute confusion caused by the renaming
4770 will be justified by the reduction in chronic confusion..
4771 ** runtime-type.lisp -> early-target-type.lisp
4772 ** target-type.lisp -> late-target-type.lisp
4773 ** early-host-format.lisp -> early-format.lisp
4774 ** late-host-format.lisp -> late-format.lisp
4775 ** host-error.lisp -> misc-error.lisp
4776 ** early-error.lisp -> early-target-error.lisp
4777 ** late-error.lisp -> late-target-error.lisp
4778 ** host-defboot.lisp -> early-defboot.lisp
4779 ** code/misc.lisp -> code/target-misc.lisp
4780 ** code/host-misc.lisp -> code/misc.lisp
4781 ** code/numbers.lisp -> code/target-numbers.lisp
4782 ** code/early-numbers.lisp -> numbers.lisp
4783 ** early-host-type.lisp -> early-type.lisp
4784 ** late-host-type.lisp -> late-type.lisp
4785 ** host-typep.lisp -> typep.lisp
4786 ** load.lisp -> target-load.lisp
4787 ** host-load.lisp -> load.lisp
4788 ** host-disassem.lisp -> disassem.lisp
4789 ** host-insts.lisp -> insts.lisp
4790 ** byte-comp.lisp -> target-byte-comp.lisp
4791 ** host-byte-comp.lisp -> byte-comp.lisp
4792 ** host-signal.lisp -> signal.lisp
4793 ** host-defstruct.lisp -> defstruct.lisp
4794 ** late-target-type.lisp -> deftypes-for-target.lisp
4795 Furthermore, several other previously target-only files foo.lisp (e.g.
4796 hash-table.lisp and random.lisp) have been split into a target-and-host
4797 foo.lisp file and a target-only target-foo.lisp file, with their key type
4798 definitions in the target-and-host part, so that the cross-compiler will
4799 know more about target types.
4800 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4801 gone away. In their place are various *BACKEND-FOO* variables
4802 corresponding to the slots of the old structure.
4803 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4804 into the target SBCL has been fixed.
4805 * The chill.lisp system for loading cold code into a running SBCL
4807 * Support for the CMU CL "scavenger hook" extension has been removed.
4808 (It was undocumented and unused in the CMU CL sources that SBCL was
4809 derived from, and stale in sbcl-0.6.1.)
4810 * Various errors in the cross-compiler type system were detected
4811 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4812 (enabling various consistency checks). Many of them were fixed,
4813 but some hard problems remain, so the compiler is back to
4814 running without *TYPE-SYSTEM-INITIALIZED* for now.
4815 * As part of the cross-compiler type system cleanup, I implemented
4816 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4817 * I have started adding UNCROSS calls throughout the type system
4818 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4819 on cross-compiler input files will be able to go away, and various
4821 * CONSTANTP now returns true for quoted forms (as explicitly required
4824 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4826 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4827 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4828 (MAKE-LIST -1). In the longer term, it ought to become true
4829 that declarations are assertions even at SAFETY 1. For now, it's not
4830 quite true even at SAFETY 3, but it's at least more nearly true..
4831 (Note that this change seems to increases the size of the system by
4832 O(5%) and to decrease the speed of the compiler by 20% or more.)
4833 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4834 for the problem of printing dozens of lines of distracting information
4835 about low-level system machinery as part of the top stack frame
4836 on entry to the debugger when an undefined function was called.
4837 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4838 is not reset to COMMON-LISP-USER.
4839 * Compilation of stuff related to dyncount.lisp has been made conditional
4840 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4841 smaller. The various dyncount-related symbols have been moved into
4842 a new "SB-DYNCOUNT" package.
4843 * tty-inspect.lisp has been renamed to inspect.lisp.
4844 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4845 feature has gone away. (When we eventually port to other flavors of
4846 libc and/or Unix, we'll try to make the differences between flavors
4847 invisible at the user level.)
4848 * Various other *FEATURES* tags, and/or their associated conditionals,
4849 have been removed if obsolescent, or given better documentation, or
4850 sometimes given more-mnemonic names.
4852 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4854 * tidied up "make.sh" script
4855 * tidied up system directory structure
4856 * better "clean.sh" behavior
4857 * added doc/FOR-CMUCL-DEVELOPERS
4858 * many many small tweaks to output format, e.g. removing possibly-confusing
4859 trailing #\. character in DESCRIBE-INSTANCE
4860 * (EQUALP #\A 'A) no longer signals an error.
4861 * new hashing code, including EQUALP hashing
4862 * tidied up Lisp initialization and toplevel
4863 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4864 * command line argument processing
4865 * added POSIX-GETENV function to deal with Unix-ish environment variables
4866 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4867 terminating SBCL on EOF
4868 * non-verbose GC by default
4869 * There is no more "sbcl" shell script; the sbcl file is now the C
4870 runtime executable (just like CMU CL).
4871 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4873 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4874 symbol and package information as Lisp native symbol and package objects
4875 instead of strings naming symbols and strings naming packages. This way,
4876 whenever packages are renamed (as in warm init), debug information is
4877 transformed along with everything else.
4878 * tweaked the optimization policy declarations which control the building
4879 of SBCL itself. Now, among other things, the system no longer saves
4880 source location debugging information. (This helps two problems at once
4881 by reducing SBCL size and by keeping SBCL from trying to look for its
4882 sources -- which may not exist -- when reporting errors.)
4883 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4884 debugging and testing purposes
4885 * cleaned up printing, making the printer call PRINT-OBJECT for
4886 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4887 methods, giving nearly-ANSI behavior
4888 * converted almost all special variables to use *FOO* naming convention
4889 * deleted PARSE-TIME functionality, since it can be done portably
4890 * moved some files out of cold init into warm init
4891 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4893 * regularized formatting of source files
4894 * added an install.sh script
4895 * fixed ridiculous memory usage of cross-compiler by making
4896 compiler/alloc.lisp not try to do pooling unless it can hook
4897 itself into the GC of the cross-compilation host. Now the system
4898 builds nicely on my old laptop.
4899 * added :SB-ALLOC in target-features.lisp-expr
4900 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4901 was not implemented)
4902 * re-did condition handling and note reporting in the compiler. Notes
4903 are no longer handled by signalling conditions. Style warnings
4904 and warnings are handled more correctly and reported in such a way
4905 that it's easy to find one or the other in your output (so that you
4906 can e.g. figure out which of many problems caused COMPILE-FILE to
4908 * changed the severity of several compiler warnings from full WARNING
4909 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4910 compiler note reporting so that it doesn't use the condition system
4911 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4912 COMPILE-FILE command)
4913 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4914 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4915 no longer supported, since their implementation was deeply intertwingled
4916 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4917 * removed bogus "support" for compiler macros named (SETF FOO), and
4918 removed the compiler macro for SETF INFO (but only after making a fool
4919 of myself on the cmucl-imp mailing list by posting a bogus patch for
4920 DEFINE-COMPILER-MACRO..)
4921 * Compiled files containing forms which have side effects on the Lisp
4922 reader (such as DEFPACKAGE forms) are now handled more correctly.
4923 (Compiler queuing of top level lambdas has been suppressed by setting
4924 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4925 * deleted various currently-unused source files, e.g. gengc.lisp. They
4926 may be added back at some point e.g. when porting to other architectures,
4927 but until they are it's distracting to distribute them and to try to
4929 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4930 there were so many of them they're just distractions, and UNCROSS is
4931 known to be able to handle the current sources
4932 * moved PROFILE functionality into TRACE, so that it will be clear
4933 how the wrapping and unwrapping of functions when you profile them
4934 interacts with the wrapping and unwrapping of functions when you
4935 trace them. (Actually, the functionality isn't there yet, but at least
4936 the interface specification is there. Hopefully, the functionality will
4937 arrive with some future maintenance release.)
4938 * removed host-oops.lisp
4939 * changed signature of QUIT function to allow UNIX-CODE argument
4940 * fixed READ-SEQUENCE bug
4941 * tweaked verbose GC output so that it looks more like the progress
4942 output that ANSI specifies for functions like LOAD
4943 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4944 * added <http://sbcl.sourceforge.com> to the banner information printed by