1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.23 relative to 1.0.22:
3 * optimization: printing with *PRINT-PRETTY* true is now more
4 efficient as long as the object being printed doesn't require
5 special handling by the pretty printer.
7 changes in sbcl-1.0.22 relative to 1.0.21:
8 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
9 for the shared object in the current directory, but passes the native
10 namestring of the designated pathname to the operation system's shared
11 object loading function as-it.
12 * minor incompatible change: --disable-debugger toplevel option now takes
13 effect before processing of initialization files and --eval or --load
15 * new feature: new commandline argument: --script, which supports
16 shebang lines. See documentation for details. (based on work by
18 * new feature: SAVE-LISP-AND-DIE can save current values of
19 --dynamic-space-size and --control-stack-size in the executable core,
20 causing it to skip normal runtime option processing. See documentation
21 for details. (thanks to Zach Beane)
22 * enhancement: inoccous calls to EVAL or generic functions dispatching
23 on subclasses of eg. STREAM no longer cause compiler notes to appear.
24 * enhancement: the system no longer resignals errors from --load and
25 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
26 associated with the original error to be lost. (thanks to Ariel
28 * enhancement: :DONT-SAVE keyword argument has been added to
29 LOAD-SHARED-OBJECT for controlling interaction with
30 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
31 the effects of an earlier LOAD-SHARED-OBJECT call.
32 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
33 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
34 provided. (reported by Cedric St-Jean)
35 * bug fix: circularity handling in the reader did not treat raw
36 structure slots correctly. (reported by Cedric St-Jean)
37 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
38 file descriptors when there were none.
39 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
40 was broken. (reporteed by Willem Broekema)
41 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
42 pathnames without a directory.
43 * bug fix: COMPILE-FILE did not warn about undefined variable
44 references at toplevel, and LOAD of the resulting fasl did
46 * bug fix: functions with non-required arguments used to end up with
47 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
48 * bug fix: redefining a function with non-required arguments didn't
49 update the system's knowledge about its call signature properly.
50 * bug fix: fixed #431; incompatible alien record type redefinitions
51 are detected and handled. (reported by Neil Haven)
52 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
53 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
55 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
56 after alien stack frames.
57 * bug fix: strings passed to mk{s,d}temp lacked null termination
59 changes in sbcl-1.0.21 relative to 1.0.20:
60 * new feature: the compiler is able to track the effective type of a
61 generic function across method addition and removal.
62 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
63 appropriately typed structure slots without locking.
64 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
65 information like those gathered by TIME using a programming-friendly
67 * new feature: TIME reports time taken even if the form performs a
68 non-local transfer of control.
69 * enhancement: reduced conservativism on GENCGC platforms: on
70 average 45% less pages pinned (measured from SBCL self build).
71 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
72 mutate constant symbols or violate declaimed type of the symbol.
73 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
74 sleeping on the semaphore in heavily contested semaphores.
75 * bug fix: semaphores and condition variables were not interrupt
77 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
78 owned by other threads anymore.
79 * bug fix: FIND on lists called KEY outside the specified
80 subsequence. (reported by budden)
81 * bug fix: LOG doesn't use single-float intermediate results when
82 given mixed integer and double-float arguments, leading to better
83 precision. (reported by Bob Felts)
84 * bug fix: LOG with base zero returned values of inconsistent type.
86 changes in sbcl-1.0.20 relative to 1.0.19:
87 * minor incompatible change: OPTIMIZE qualities
88 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
89 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
90 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
91 * documentation: some slot access efficiency guidelines have been
92 added to the user manual.
93 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
94 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
96 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
97 to more efficient EQ-comparison versions more often.
98 * optimization: enhanced derivation of DOLIST iteration variable type
100 * optimization: constant folding of simple (LIST ...) forms as DOLIST
102 * optimization: runtime lookup of function definitions can be
103 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
104 * optimization: compiler is able to derive the return type of
105 (AREF (THE STRING X) Y) as being CHARACTER.
106 * optimization: CLRHASH on empty hash-tables no longer does pointless
107 work. (thanks to Alec Berryman)
108 * optimization: REPLACE deftransforms don't punt when :START1 or
110 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
111 no longer emits a code deletion note. (reported by Andrew
113 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
114 functions with an odd number of &OPTIONAL arguments, a &REST
115 argument, and one or more &KEY arguments at the call site.
116 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
117 arguments appeared at call sites as well.
118 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
119 READ-LINE &co can no longer read from them afterwards. (reported
121 * bug fix: fixed #427: unused local aliens no longer cause compiler
122 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
124 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
125 alien-stack leakage. (reported by Andy Hefner)
126 * bug fix: PROGV signals an error when an attempt to violate declared
127 type of a variable or bind a constant is made.
128 * bug fix: SET signals an error when an attempt to violate declared
129 type of a variable is made.
130 * bug fix: restart computation during the execution of a restart
131 test function no longer causes infinite recursion. (reported by
133 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
134 signals an error. (thanks to Pierre Mai)
135 * bug fix: EXPORT left symbol unexported in conflict situations.
136 (thanks to Michael Weber)
137 * bug fix: correctly handle name conflicts involving CL:NIL.
138 (thanks to Michael Weber)
139 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
140 conflicts arising from USEing package with conflicting symbols
141 correctly. (thanks to Michael Weber)
143 changes in sbcl-1.0.19 relative to 1.0.18:
144 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
145 warnings that go otherwise unhandled will be muffled if they are
146 of the type that's the value of this variable.
147 * optimization: stack allocation is slightly more efficient on x86
149 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
150 where a raw slot always is initialized using the initform whose
151 type is not know sufficiently well a compile-time are now compiled
152 correctly. (reported by John Morrison)
153 * bug fix: compiler no longer makes erronous assumptions in the
154 presense of non-foldable SATISFIES types.
155 * bug fix: stack analysis missed cleanups of dynamic-extent
156 arguments in non-let-converted calls to local functions.
157 * improvements to the Windows port:
158 ** adjusted address spaces for building on both Win32 and
159 Win64. (thanks for John Connors)
160 * fixed some bugs revealed by Paul Dietz' test suite:
161 ** interval arithmetic during type derivation used inexact integer
162 to single-float coercions.
163 ** arithmetic operations involving large integers and single
164 floats give the same results in compiled and interpreted code.
165 ** deriving the result type of COERCE no longer signals an error
166 if the derived type of the second argument is a MEMBER type
167 containing invalid type specifiers.
168 ** ADJOIN with constant NIL as second argument works correctly.
169 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
171 changes in sbcl-1.0.18 relative to 1.0.17:
172 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
173 profiles only the current thread.
174 * minor incompatible change: changes to SYMBOL-VALUE of constants
175 defined with DEFCONSTANT now signal an error.
176 * enhancement: SB-SPROF now has support for wallclock profiling,
177 and is also able to profile specific threads. REPORT output
178 has also additional sorting options.
179 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
181 * optimization: structure allocation has been improved
182 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
183 ** out of line constructors are ~10% faster.
184 ** inline constructors are ~15% faster.
185 ** inline constructors are capable of dynamic extent allocation
186 (generally on x86 and x86-64, in some cases on other platforms
188 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
190 * optimization: file compiler is now able to coalesce non-circular
191 lists, non-base strings, and bit-vectors. Additionally, constants
192 are never referenced through SYMBOL-VALUE at runtime.
193 * optimization: code defining methods on PRINT-OBJECT (and other
194 generic functions in the COMMON-LISP package) now loads faster.
195 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
197 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
198 fasl is now deleted. (reported by Attila Lendvai)
199 * bug fix: READ-LINE always returned NIL for the last line in files.
200 (reported by Yoshinori Tahara)
201 * bug fix: more accurate disassembly annotations of foreign function
202 calls. (thanks to Andy Hefner)
203 * bug fix: trimming non-simple strings and non-string string
204 designators when the there is nothing to trim works properly.
205 (thanks to James Knight)
206 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
207 (thanks to Travis Cross)
208 * fixed some bugs revealed by Paul Dietz' test suite:
209 ** NIL is a valid function name (regression at 1.0.13.38)
210 ** FILL on lists was missing its return value (regression at 1.0.12.27)
211 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
212 fill pointers properly (regression at 1.0.12.23)
213 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
214 displacement indices properly (regression at 1.0.12.23)
216 changes in sbcl-1.0.17 relative to 1.0.16:
217 * temporary regression: user code can no longer allocate closure
218 variable storage on stack, due to bug 419 without explicitly
219 requesting it. Please consult sbcl-devel for advice if you need to
220 use this feature in the meanwhile.
221 * new feature: runtime argument --control-stack-size can be used to
222 adjust thread default control stack size.
223 * enhancement: improved TIME output
224 ** all times are reported using the measured accuracy (milliseconds
225 for real and GC times, microseconds for everything else.)
226 ** processor cycle counts on x86 and x86-64.
227 ** interpreted forms are counted for both evaluator modes.
228 ** number of lambdas converted by the compiler is reported.
229 ** CPU percentage report (computed from real and total run time.)
230 ** more comprehensive run time reporting, using a condenced format
231 ** interperted form, lambda, and page fault counts are omitted
233 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
235 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
236 * optimization: two argument forms of LAST are upto ~10% faster
237 in normal SPEED policies.
238 * optimization: NCONC no longer needs to heap cons its &REST list
239 in normal SPEED policies.
240 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
242 * bug fix: UNION and NUNION work with :TEST-NOT once more,
243 regression since 1.0.9.1. (thanks to Eric Marsden)
244 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
245 since 1.0.15.36. (thanks to Paul Khuong)
246 * bug fix: LAST when always returned the whole list when given a bignum
247 as the second argument.
248 * bug fix: dynamic extent allocation of nested lists and vectors
249 could leak to otherwise accessible parts.
250 * bug fix: invalid optimization of heap-allocated alien variable
252 * bug fix: fasl header checking is less vulnerable to different
253 platform word lengths.
254 * bug fix: more correct assembler syntax for GNU binutils
255 2.18.50.0.4 support. (thanks to Marijn Schouten)
256 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
258 * bug fix: the fopcompiler can handle LOCALLY forms (with no
259 declarations) successfully. (reported by Attila Lendvai)
261 changes in sbcl-1.0.16 relative to 1.0.15:
262 * minor incompatible change: revert the changes to sb-posix's error
263 signaling added in 1.0.14.
264 * minor incompatible change: change PROBE-FILE back to returning
265 NIL whenever we can't get a truename, as was the case before 1.0.14.
266 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
267 inherits from ERROR instead of just CONDITION.
268 * new feature: SB-INTROSPECT can provide source locations for instances
269 as well. (thanks to Tobian Ritterweiler)
270 * optimization: binding special variables now generates smaller code
271 on threaded platforms.
272 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
273 and cases where no :TEST is given but the compiler can infer that
274 the element to search is of type (OR FIXNUM (NOT NUMBER)).
275 * optimization: better LOGNOT on fixnums.
276 * optimization: modular arithmetic for a particular requested width
277 is implemented using a tagged representation unless a better
278 representation is available.
279 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
280 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
281 for wellformedness and returns a specialized vector. (reported by
282 Francois-Rene Rideau)
283 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
284 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
285 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
286 unscheduling timer at the same time as another timer fires.
287 * bug fix: don't reschedule timers for dead threads.
288 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
289 * bug fix: copying output from RUN-PROGRAM to a stream signalled
290 bogus errors if select() was interrupted.
291 * enhancement: add support for fcntl's struct flock to SB-POSIX.
293 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
294 * enhancement: cleaner backtraces for interactive interrupts, as
295 well as other cases where the interesting frames used to be
296 obscured by interrupt handling frames.
297 * enhancement: untracing a whole package using (UNTRACE "FOO") is
298 now supported, and tracing a whole package using (TRACE "FOO") now
299 traces SETF-functions as well.
300 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
301 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
302 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
303 * unreadably printed representation of hash-tables now includes
305 * bug fix: partially fixed #188: type propagation from assignments
306 is now more efficient.
307 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
308 'DOUBLE-FLOAT) are not flushable.
309 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
310 full address of the object, and none of the tag bits.
311 * bug fix: readably printing hash-tables now respects other printer
312 control variables. (reported by Cedric St-Jean)
313 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
314 keyword with MAKE-HASH-TABLE.
315 * bug fix: export SB-POSIX:MKSTEMP.
316 * bug fix: SORT was not interrupt safe.
317 * bug fix: XREF accounts for the last node of each basic-block as
319 * bug fix: MAKE-INSTANCE optimizations interacted badly with
320 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
321 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
322 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
323 create obsolete instances in the case of redefinition or
324 obsoletion of a superclass. (thanks to Andy Hefner)
325 * bug fix: Support for the Alpha architecture has been revived; it had
326 suffered somewhat from lack of maintenance since sbcl-1.0.
327 * improvements to the Windows port:
328 ** The system detects the codepage to use at startup, instead of
329 using the value from the saved core. (thanks to Kei Suzuki)
331 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
332 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
333 (see documentation for details.)
334 * revived support for OpenBSD (contributed by Josh Elsasser)
335 * partially fixed bug #108: ROOM no longer suffers from occasional
336 (AVER (SAP= CURRENT END)) failures.
337 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
338 bodies no longer cause a WARNING to be signalled. (reported by
340 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
341 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
342 the bug in TRUNCATE.) (reported by Michael Weber)
343 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
344 no samples. (reported by Andy Hefner)
345 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
346 no longer appear as (NIL ...) frames in backtraces.
347 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
348 is now actually exported from SB-EXT as documented. (reported by
350 * bug fix: sb-aclrepl now correctly understands how to inspect
351 single-floats on 64-bit platforms where single-floats are not boxed.
352 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
353 yet been finalized. (reported by Levente Meszaros)
354 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
355 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
356 SBCL-specific optimize qualities.
358 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
359 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
360 an executable in the search path, and does so in the child
361 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
362 been removed; it can be found in the CVS history, for somebody who
363 needs that search behavior (see the manual).
364 * minor incompatible change: compiler policy re. weakening type
365 checks has changed: now type checks are weakened only if SAFETY < 2
367 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
368 unparsing of directory pathnames as files. Analogously,
369 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
370 filename to parse into a directory pathname.
371 * enhancement: implicit generic function creation now signals a
372 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
373 users can bind handlers for and muffle around calls to LOAD.
374 * enhancement: RUN-PROGRAM allows unicode arguments and environments
375 to be used (using the default stream external format), and allows
376 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
377 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
378 strings and vectors whose element-type or simplicity is not fully
379 known at compile-time.
380 * optimization: STRING-TRIM and related functions no longer allocate
381 a new string when no trimming needs to be performed. These functions
382 are also faster than before when the input string has been declared
384 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
385 * optimization: READ-LINE is significantly faster for files containing
387 * optimization: non-open coded uses of character comparison operators
388 (e.g. char=) no longer cons when called with more than one parameter
389 on platforms supporting dynamic-extent allocation.
390 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
391 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
392 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
394 * bug fix: some sequence functions elided bounds checking when
396 * bug fix: too liberal weakening of union-type checks when SPEED >
398 * bug fix: more bogus fixnum declarations in ROOM implementation
401 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
402 * new feature: MAKE-HASH-TABLE now experimentally accepts a
403 :SYNCHRONIZED argument, which makes the hash-table safe for
404 concurrent accesses (but not iteration.) See also:
405 SB-EXT:WITH-LOCKED-HASH-TABLE, and
406 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
407 * optimization: CONCATENATE on strings is an order of magnitude faster
408 in code compiled with (> SPEED SPACE).
409 * optimization: SUBSEQ is ~50% faster on lists.
410 * bug fix: bug 417 fixed -- source location reporting is now more robust.
411 * bug fix: SUBSEQ on a list will now correctly signal an error if if
412 END is smaller then START.
413 * bug fix: SB-PROFILE will no longer report extra consing for nested
414 calls to profiled functions.
415 * bug fix: ROOM implementation had bogus fixnum declarations which
416 could cause type-errors when calling ROOM on large images.
417 * bug fix: if file compilation is aborted, the partial fasl is now
418 deleted, and COMPILE-FILE returns NIL as the primary value.
419 * bug fix: number of thread safety issues relating to SBCL's internal
420 hash-table usage have been fixed.
421 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
422 be returned from its body when the values were being returned
423 using unknown-values return convection and the W-P-O was wrapped
424 inside an UNWIND-PROTECT.
425 * bug fix: sb-posix should now compile again under Windows, enabling
428 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
429 * incompatible change: hash-table accessor functions are no longer
430 automatically protected by locks. Concurrent accesses on the same hash-table
431 from multiple threads can give inconsistent results or even corrupt the
432 hash-table completely. Multi-threaded applications should do their own
433 locking at the correct granularity. In the current implementation it is
434 still safe to have multiple readers access the same table, but it's not
435 guaranteed that this property will be maintained in future releases.
436 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
437 and will signal an error at runtime.
438 * enhancement: SB-THREAD package now exports a semaphore interface.
439 * enhancement: CONS can now stack-allocate on x86 and
440 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
442 * enhancement: nested lists can now be stack allocated on
443 platforms providing stack allocation support.
444 * enhancement: dynamic-extent support has been extended to support
445 cases where there are multiple possible sources for the stack
447 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
448 if the mutex is uncontested on Linux.
449 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
450 as specified by the CLHS. (thanks to Tobias Rittweiler)
451 * bug fix: NaN comparison now works on x86-64.
452 * bug fix: CLOSE :ABORT T on a stream with pending output now
454 * bug fix: instances of non-standard metaclasses using standard
455 instance structure protocol sometimes missed the slot type checks
457 * bug fix: known functions can be inlined in high-debug code.
459 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
460 * minor incompatible change: the MSI installer on Windows no longer
461 associates .lisp and .fasl files with the installed SBCL.
462 * minor incompatible change: :UNIX is no longer present in *FEATURES*
463 on Windows. (thanks to Luis Oliviera)
464 * new feature: SB-CLTL2 contrib module now implements
465 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
466 * optimization: scavenging weak pointers is now more efficient,
467 requiring O(1) instead of O(N) per weak pointer to identify
468 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
469 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
470 method bodies using constant slot-names when the first argument is
471 a specializer parameter for the method.
472 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
473 names, when the class of the instance is a direct instance
474 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
475 as slow as the constant slot-name case.)
476 * optimization: member type construction is now O(N) instead
478 * optimization: UNION and NUNION are now O(N+M) for large
479 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
481 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
482 now more readable in environments like Slime which display it.
483 (thanks to Tobias C. Rittweiler)
484 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
485 was able to infer the correct argument type for the object on which
486 the CAS operation was being performed.
487 * bug fix: copy propagation interfered with parallel assignment
488 semantics in local calls. (reported by Paul Khuong)
489 * bug fix: the signed modular fixnum shift compiled to wrong code on
490 x86 and x86-64. (spotted by a slight modification to some of
493 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
494 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
495 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
496 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
498 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
499 and generic function now print the object identity for anonymous
500 instances. (thanks to Attila Lendvai)
501 * enhancement: as an extension to MOP, SBCL now supports SETF of
502 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
503 (thanks to Attila Lendvai)
504 * enhancement: sb-cover has an alternate annotation mode which puts
505 the form annotations at the car of the form, instead of annotating
506 it completely. The benefit of this mode is that it shows better
507 which forms were instrumented by the compiler.
508 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
509 by printer control variables. (reported by Dan Corkill)
510 * bug fix: system leaked memory when delayed output was performed by
511 the OS in smaller chunks then expected. (thanks to David Smith)
512 * bug fix: system leaked memory when file streams were not closed
514 * bug fix: large objects written to slow streams that were modified
515 after the write could end up with the modified state written to
516 the underlying file descriptor.
517 * bug fix: multiple threads operating in parallel on the same stream
518 could cause buffer-overflows.
519 * bug fix: source location information is stored correctly
520 (broken since 1.0.6). This bug would generally show up as the
521 Slime debugger highlighting the wrong form when the sldb-show-source
523 * bug fix: Branch forms are again annotated as branches in the sb-cover
525 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
526 on x86-64. (reported by Gregory Vanuxem)
527 * bug fix: EQUALP could return wrong results for structures with raw
528 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
529 word). (reported by Vjacheslav Fyodorov)
530 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
533 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
534 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
535 atomic compare-and-swap operations on threaded platforms.
536 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
537 allows assigning a global minimum value to optimization qualities
538 (overriding proclamations and declarations).
539 * enhancement: closed over variables can be stack-allocated on x86
541 * performance bug fix: GETHASH and (SETF GETHASH) are once again
543 * optimization: slot definition lookup is now O(1). This speeds up
544 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
545 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
546 * optimization: ASSOC and MEMBER can now be open-coded for all
547 combinations of keyword arguments when second argument is constant
548 and SPEED >= SPACE. In other cases a specialized version is
550 * bug fix: using obsoleted structure instances with TYPEP and
551 generic functions now signals a sensible error.
552 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
553 (reported by Kristoffer Kvello)
554 * bug fix: backtrace construction is now more careful when making
555 lisp-objects from pointers on the stack, to avoid creating bogus
556 objects that can be seen by the GC.
557 * bug fix: defaulting of values in contexts expecting more than 7
558 variables now works on x86-64. (reported by Christopher Laux)
559 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
561 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
562 as the property-list of a symbol.
563 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
564 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
565 situations requested, are once again file-compileable. (reported
568 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
569 * MOP improvement: support for user-defined subclasses of
570 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
571 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
572 the expansion of DEFMETHOD, is responsible for generating a form
573 which creates a list of specializers when evaluated. Additional
574 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
575 debugging and introspective support.
576 * minor incompatible change: the (unsupported) spinlock interface
577 has changed: free spinlock now has the value NIL, and a held spinlock
578 has the owning thread as its value.
579 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
580 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
582 * enhancement: name of a socket-stream is now "a socket" instead of
584 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
585 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
586 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
587 for generic functions. (Thanks to Tobias C. Rittweiler)
588 * optimization: bignum printing speed has been improved by 20-40%
589 (depending on the bignum size.)
590 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
592 * bug fix: the cache used by the CLOS to store precomputed effective
593 methods, slot offsets, and constant return values is now thread and
595 * bug fix: generic function dispatch function updating is now thread
596 and interrupt safe (in the sense that the known issues have been
598 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
599 * bug fix: interning EQL-specializers is now thread and interrupt safe.
600 * bug fix: asdf systems with dependencies to the SB-POSIX or
601 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
602 * bug fix: interrupt safety of applicable method computation has been
605 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
606 * new contrib: sb-cover, an experimental code coverage tool, is included
608 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
609 significantly faster.
610 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
611 produce more efficient code on x86-64 if the compiler can determine
612 that (+ INDEX <constant>) does not require a bounds check and FOO
613 has an element type at least 8 bits wide.
614 * enhancement: a new, experimental synchronous timeout facility is
615 provided. Refer to SB-SYS:WITH-DEADLINE for details.
616 * enhancement: when a symbol name conflict error arises, the
617 conflicting symbols are always printed with a package prefix.
618 (thanks to Kevin Reid)
619 * enhancement: stepping is now once again supported on the SPARC and
620 MIPS platforms. (It is also now more likely to work on CheneyGC
622 * enhancement: sb-sprof can now also track and report accurate call
624 * bug fixes: the treatment of non-standard subclasses of
625 SB-MOP:SPECIALIZER is more correct.
626 * incompatible change: PURIFY no longer copies the data from the
627 dynamic space into the static and read-only spaces on platforms
628 that use the generational garbage collector
629 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
631 * bug fix: GC race condition occasionally resulting in crashes with
632 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
634 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
636 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
637 a STYLE-WARNING to be signalled (regression from 1.0.4.)
638 * bug fix: an asynchronous interrupt could previously leave the
639 system running with GC inhibited.
640 * bug fix: a DECLARE form evaluated at top-level now causes an error
641 rather than silently (or verbosely) returning NIL.
642 * bug fix: trying to dissassemble functions compiled at high DEBUG could
643 result in a error being signalled due to source form lookup errors.
644 (reported by Peter Graves)
646 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
647 * incompatible change: removed writer methods for host-ent-name,
648 host-ent-addresses -- changing the values did not update the DNS
650 * minor incompatible change: changed experimental JOIN-THREAD interface
651 * documentation: the manual now lists reader and writer methods
652 in class slot documentation sections. (thanks to Richard M Kreuter)
653 * documentation: unwinding from asyncronous events has been
654 documented as unsafe.
655 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
656 in multithreaded application code.
657 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
658 platforms. (thanks to James Anderson for the optimization hint)
659 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
661 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
662 variants no longer cons.
663 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
664 their NOT- variants no longer cons.
665 * optimization: EQUAL hash tables no longer use SXHASH for objects
666 of all data types, but instead use an EQL hash for types for which
667 EQUAL is the same as EQL.
668 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
669 are significantly faster.
670 * optimization: new STRING-OUTPUT-STREAM implementation is much
671 faster for large outputs and conses 30% less on average.
672 * enhancement: XREF information is now collected for references made
673 to global variables using SYMBOL-VALUE and a constant argument.
674 * enhancement: SIGINT now causes a specific condition
675 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
676 * bug fix: FILE-POSITION used to signal an error in some cases where
677 ANSI requires it to return NIL.
678 * bug fix: ADJUST-ARRAY is now interrupt-safe.
679 * bug fix: adding and removing fd-handlers is now interrupt-safe.
680 * bug fix: inlined calls to C now ensure 16byte stack alignment on
682 * bug fix: bad type declaration in the CLOS implementation has
683 been fixed. (reported by James Anderson)
684 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
685 (thanks to Lutz Euler)
686 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
687 required by the CLHS. (reported by Samium Gromoff)
688 * bug fix: dead unbound variable references now signal an error.
689 (reported by Marco Monteiro)
690 * bug fix: / with an unused value was being deleted in safe code.
691 (thanks to Marco Monteiro and Kevin Reid)
692 * bug fix: number of characters that can be written onto a single
693 line in a file is unlimited.
694 * bug fix: some GC deadlocks caused by asynchronous interrupts have
695 been fixed by inhibiting interrupts for when GC is disabled.
696 * bug fix: some interrupt safety issues with GETHASH, (SETF
697 GETHASH), CLRHASH and REMHASH have been fixed.
698 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
699 specifier no longer causes infinite recursion.
700 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
701 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
702 * bug fix: an &environment argument with the correct variable information
703 is passed to macros that are expanded during byte compilation.
704 (reported by Samium Gromoff)
705 * bug fix: a logic error was causing the hash function for bignums to
706 have excessive amounts of collisions. (reported by Faré Rideau)
707 * bug fix: modifying the contents of an array could change the return
708 value of SXHASH on that array, which is only allowed for strings
709 and bit vectors. (bug introduced in 0.9.16)
710 * improvement: the x86-64/darwin port now passes all tests (except
711 for the debugger tests) but should still be considered
712 experimental until this is fixed.
713 * improvement: a style-warning is signaled for CASE (etc) clauses with
714 duplicate keys. (thanks to Kevin Reid)
715 * improvement: macos/x86 and macos/x86-64 now use mach exception
716 handlers for dealing with illegal instructions (for trapping and
717 error handling) and memory protection violations (for GC).
719 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
720 * new platform: experimental support for x86-64/darwin (MacOS).
721 * incompatible change: the thread-safe (on most platforms) getaddrinfo
722 and getnameinfo sockets functions are used instead of gethostbyaddr
723 and gethostbyname, on platforms where the newer functions are available.
724 As a result, the ALIASES field of HOST-ENT will always be NIL on these
726 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
727 don't print the startup banner, but behave as if --noinform was passed
728 as a command line argument. (thanks to Kevin Reid)
729 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
730 * optimization: code using alien values with undeclared types is much faster.
731 * optimization: the compiler is now able to open code SEARCH in more cases.
732 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
733 * bug fix: using standardized COMMON-LISP special variables as loop
734 variables no longer signals bogus package lock violations. (reported
736 * bug fix: declaring local loop variables to be of a range-limited type
737 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
738 (reported by Andras Simon)
739 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
740 bugs remain on x86-64.)
741 * bug fix: the #= and ## reader macros now interact reasonably with
742 funcallable instances.
743 * bug fix: type-checks for function arguments were compiled using the
744 compiler policy settings of the wrong lexical environment (in 1.0.2
746 * bug fix: SHADOW accepts characters as string designators, as required
747 by the spec (thanks to Eric Marsden)
748 * bug fix: fixed GC safety issues when foreign functions are called with
749 non-base strings as arguments
750 * bug fix: more consistent error output for fatal-compiler-warnings, like
752 * bug fix: functions with proper names were showing up as NIL in
753 backtraces (reported by Edi Weitz, regression in 1.0.2)
755 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
756 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
757 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
758 produce more efficient code on the x86 if the compiler can determine
759 that (+ INDEX <constant>) does not require a bounds check and FOO
760 has an element type at least 8 bits wide.
761 * bug fix: references to undefined variables are handled the same way
762 in toplevel forms as in the normal compiler
763 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
765 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
766 (thanks to Jon Buller)
767 * improvement: faster compilation times for complex functions
768 * improvement: added readlink support to SB-POSIX (thanks to Richard
771 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
772 * improvement: experimental support for mach exception handling on
773 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
775 * improvement: support for GBK external format.
776 (thanks to Chun Tian (binghe))
777 * improvement: the debugger now displays variables that have been closed
778 over, in code compiled with (DEBUG 2) or higher
779 * improvement: support for executable cores on NetBSD (thanks to
781 * new feature: added a RESTART-FRAME debugger command
782 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
783 be used to provide an implementation for FILE-POSITION on Gray streams
784 (thanks to Eric Marsden)
785 * new feature: add syslog, openlog and closelog support to SB-POSIX
786 (thanks to Richard Kreuter)
787 * optimization: the function call overhead in code compiled with
788 a high DEBUG optimization setting is significantly
789 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
790 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
791 (thanks to Tony Martinez)
792 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
793 evaluated once (reported by Kevin Reid)
794 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
795 works again (thanks to Kilian Sprotte)
796 * bug fix: an error is signaled for tagbodies with duplicate tags
797 (thanks to Stephen Wilson)
798 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
799 * bug fix: Win32 port can now handle foreign code unwinding Lisp
800 stack frames from alien callbacks.
801 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
802 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
803 65k pages (thanks to David Woodhouse)
804 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
806 changes in sbcl-1.0.1 relative to sbcl-1.0:
807 * new platform: FreeBSD/x86-64, including support for threading.
808 * new feature: the compiler stores cross-referencing information
809 about function calls (who-calls), macroexpansion (who-macroexpands)
810 and special variables (who-binds, who-sets, who-references) for code
811 compiled with (< SPACE 3). This information is available through the
812 sb-introspect contrib.
813 * new feature: users may subclass SEQUENCE, and have instances of
814 these classes interoperate with standard Common Lisp functions if
815 a number of methods are defined. (This feature is experimental
816 and the interface subject to change based on feedback from SBCL
817 users and the general community)
818 * improvement: sb-sprof traces call stacks to an arbitrary depth on
819 x86/x86-64, rather than the previous fixed depth of 8
820 * improvement: another pthread back-end of mutex "pthread-futex".
821 * bug fix: non-ascii command-line arguments are processed correctly
822 (thanks to Yaroslav Kavenchuk)
823 * bug fix: non-required arguments were not passed correctly when a method
824 defined using DEFMETHOD was called from a mop-generated method using
825 CALL-NEXT-METHOD (reported by Pascal Costanza)
826 * bug fix: recursion is now permitted in accessors through
827 SLOT-UNBOUND. (reported by Pascal Costanza)
828 * bug fix: an error was signaled at startup if the HOME environment
829 variable was defined, but had an empty value (reported by Peter Van Eynde)
830 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
831 signal a PROGRAM-ERROR, not a BUG.
832 * bug fix: SB-POSIX:READDIR works when built with large file support.
833 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
835 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
836 for better automatic indentation support. (thanks to Matt Pillsbury)
837 * optimization: loading generic functions no longer takes O(n^2) time,
838 proportional to the amount of methods in the generic function
839 (reported by Todd Sabin and Jeremy Brown)
840 * optimization: the FIND and POSITION family of sequence functions
841 are significantly faster on arrays whose element types have been
843 * improvements to the Windows port:
844 ** Intermittent heap corruption problems have been fixed. (thanks
845 to Alastair Bridgewater)
846 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
848 ** Lisp is able to unwind foreign exception frames from alien
849 callbacks. (thanks to Alastair Bridgewater)
851 changes in sbcl-1.0 relative to sbcl-0.9.18:
852 * improvement: experimental support for threading on FreeBSD/x86.
853 (thanks to NIIMI Satoshi)
854 * improvement: runtime option --dynamic-space-size can be used
855 to set the size of the dynamic space reserved on startup.
856 * improvement: floating point modes in effect are now saved in
857 core, and restored on startup.
858 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
859 startup, not time since first call to GET-INTERNAL-REAL-TIME.
860 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
861 threads are not running after *SAVE-HOOKS* have run.
862 * improvement: writes to CLOS instance slots are type-checked in code
863 compiled with (SAFETY 3)
864 * improvement: floating-point exception handling on FreeBSD (thanks to
866 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
867 (thanks to Zach Beane)
868 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
870 * improvement: added support for the Shift-JIS external format.
871 (contributed by NIIMI Satoshi)
872 * improvement: callbacks are supported on Linux/PPC. (thanks to
874 * bug fix: compiler bug triggered by a (non-standard) VALUES
875 declaration in a LET* was fixed. (reported by Kaersten Poeck)
876 * bug fix: file compiler no longer confuses validated and already
877 dumped structurres. (reported by Kaersten Poeck)
878 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
879 fill-pointer signals a type-error as required. (thanks to
881 * bug fix: disassemly of funcallable instances works.
882 * bug fix: single stepping on PPC.
883 * bug fix: fix thread-safety problems in the type system (generally
884 manifesting as nonsensical errors like "STRING is a bad type specifier
885 for sequences" or "The value 1 is not of type FIXNUM")
886 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
887 (reported by Josip Gracin)
888 * bug fix: an error is signaled for attempts to displace arrays with
889 incompatible element types (thanks to Mario Mommer)
890 * bug fix: more correct handling of wide characters in debug info
891 (bug reported by Attila Lendvai and fixed by Juho Snellman)
892 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
893 and don't cause extra consing
894 * optimization: MAP and MAP-INTO are significantly faster on vectors
895 whose elements types have been declared.
896 * Improvements to SB-SPROF:
897 ** Support for allocation profiling
898 ** Reduced profiling overhead, especially for long profiling runs
899 * Improvements to the Windows port:
900 ** floating point exceptions are now reported correctly.
901 ** stack exhaustion detection works partially.
902 ** more accurate GET-INTERNAL-REAL-TIME.
903 ** better RUN-PROGRAM behaviour in case of errors in the child
905 ** PROBE-FILE now simplifies pathnames correctly.
906 ** DIRECTORY now works correctly with :WILD-INFERIORS.
907 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
908 1st 1970 (although time timezone data will be unreliable).
909 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
911 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
912 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
913 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
915 * bug fix: two potential GC deadlocks affecting threaded builds.
916 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
917 returns T (reported by Anton Kazennikov)
918 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
919 with non-variable places
920 * bug fix: remove a race condition in the setting of
921 funcallable-instance functions, this should make threaded CLOS
922 code more stable against memory faults.
923 * bug fix: corruption of specials when unbinding is interrupted by an
924 asynchronous unwind (reported by Hannu Koivisto)
925 * improvement: the debugger will now also display local variables that
926 are only used once, for code compiled with a DEBUG optimization quality
929 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
930 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
931 * incompatible change: External-format support for FFI calls. The
932 SB-ALIEN:C-STRING no longer implies an ASCII
933 external-format. Instead the string is subject to external-format
934 conversion. Additionally return values of type SB-ALIEN:C-STRING
935 are by default of type (SIMPLE-ARRAY CHARACTER), not
936 SIMPLE-BASE-STRING. For an alien type that behaves like the old
937 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
938 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
939 * incompatible change: SB-EXT package no longer contains the
940 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
941 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
943 * incompatible change: the single-stepper is no longer available
944 on Alpha, Mips and Sparc platforms.
945 * minor incompatible change: the direct superclasses of
946 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
947 not (STANDARD-OBJECT FUNCTION). This makes the
948 class-precedence-lists of GENERIC-FUNCTION and
949 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
951 * minor incompatible change: the default stream external format on
952 non-unicode SBCL is no longer detected from the locale, but is always
954 * new feature: Add a version of evaluator that uses an interpreter instead
955 of the compiler. EVAL still uses the compiler by default, to switch it
956 to use the interpreter, set the value of the variable
957 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
958 * minor incompatible change: the single-stepper REPL has been merged
959 with the normal debugger (see the "Stepping" heading of the debugger help
960 for more details). The debugger command STEP will no longer switch
961 to the single-stepper REPL.
962 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
963 for a type now works.
964 * bug fix: loading of default sysinit file works. (thanks to Leonid
966 * bug fix: better detection of circularities in the file-compiler.
967 (reported by Marco Monteiro)
968 * bug fix: the CL pathname functions now work with files that have
969 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
970 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
971 systems with Unix98 pty semantics.
972 * bug fix: ASDF-INSTALL will now work with bsd tar.
973 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
975 * bug fix: timers expiring in dead threads no longer cause a
976 type-error (reported by Paul "Nonny Mouse").
977 * bug fix: thanks to more lightweight single-stepper instrumentation,
978 code compiled with (DEBUG 3) will compile and execute significantly faster,
979 and will have more accurate type-inferencing than before
980 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
981 whose bindings are modified
982 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
983 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
984 ** replace dummy implementations of CL:MACHINE-INSTANCE and
985 CL:SOFTWARE-VERSION with proper version
987 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
988 * feature: implemented the READER-METHOD-CLASS and
989 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
990 as specified by AMOP.
991 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
993 * optimization: faster LOGCOUNT implementation on x86 and x86-64
994 (thanks to Lutz Euler)
995 * optimization: hashing of general arrays and vectors has been
996 improved. (reported by Any Fingerhut)
997 * enhancement: SB-INTROSPECT is now able to find definitions of
998 profiled functions. (thanks to Troels Henriksen)
999 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1000 as well, allowing compiler-macros for SETF-functions to expand.
1001 * enhancement: step-instrumentation no longer wraps known
1002 single-value functions with multiple-value context, allowing
1003 better type inference.
1004 * fixed bug #337: use of MAKE-METHOD in method combination now works
1005 even in the presence of user-defined method classes. (reported by
1006 Bruno Haible and Pascal Costanza)
1007 * fixed bug #339(c): if there are applicable methods not part of any
1008 long-form method-combination group, call INVALID-METHOD-ERROR.
1009 (reported by Bruno Haible)
1010 * fixed bug #361: the :FUNCTION initarg in the protocol for
1011 initialization of methods can now be used to override
1012 internally-produced optimized functions. (reported by Bruno
1014 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1015 system-provided lambda expression no longer cause warnings about
1016 unbound #:|pv-table| symbols.
1017 * bug fix: improved the handling of type declarations and the
1018 detection of violations for keyword arguments with non-constant
1020 * bug fix: potentially erronous calls to PATHNAME and
1021 MERGE-PATHNAMES were being flushed in some cases.
1022 (reported by Richard Kreuter)
1023 * bug fix: compiled calls to TYPEP were mishandling obsolete
1024 instances. (reported by James Bielman and Attila Lendvai)
1025 * bug fix: format strings with ~> without matching ~< no longer
1026 trigger an AVER, but signal an understandable error instead.
1027 (reported by Antonio Martinez)
1028 * bug fix: specifying an output-file without a pathname-type for
1029 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1030 of input-file instead of "fasl". (reported by Robert Dodier)
1031 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1032 (reported by James Y Knight).
1033 * bug fix: compiler-macros-function did not consider the environment
1034 argument for shadowing by local functions.
1035 * bug fix: compiler-macros expansion was inhibited by local INLINE
1037 * bug fix: inline expansions of known functions were subject to
1038 step-instrumentation in high debug policies, leading to problems
1039 with type-inference.
1040 * bug fix: compiler failed to differentiate between different CONS
1041 types in some cases.
1042 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1043 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1044 * bug fix: #368: incorrect use of expressed vs. upgraded array
1046 * bug fix: #306a: more precise unions of array types.
1047 * thread-safety improvements:
1048 ** CONDITION-WAIT could return early on Linux, if the thread was
1049 interrupted and subsequently continued with SIGCONT.
1050 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1052 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1053 * added support for the ucs-2 external format. (contributed by Ivan
1055 * minor incompatible change: pretty printing of objects of type
1056 (cons symbol) is, in the default pprint-dispatch-table, now
1057 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1059 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1060 called later in a class's lifetime, possibly as late as when the
1061 first instance of the class is created. Previously,
1062 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1063 class became finalizeable.
1064 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1065 for multibyte external-format streams. (thanks to "vbzoli")
1066 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1067 with :ALLOCATION :CLASS inherited from superclasses of the
1069 * fixed bug: anonymous classes can now be created using the :NAME
1070 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1071 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1072 * fixed bug: core-files saved with :EXECUTABLE T can again be
1073 executed when SBCL_HOME isn't set. (reported by James Knight)
1074 * fixed bug: toplevel LOCALLY forms with declarations could
1075 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1076 * fixed bug: printing from several different threads using different
1077 values of *print-case* could cause invalid output, due to
1078 some internal special variables of the printer not being bound
1079 thread-locally (reported by Max Mikhanosha)
1080 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1081 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1082 (reported by Pascal Costanza)
1083 * fixed bug: FINALIZE-INHERITANCE is called from
1084 REINITIALIZE-INSTANCE on classes when the class has previously
1085 been finalized, as required by AMOP.
1086 * minor code generation optimizations:
1087 ** better register allocation in CLOS dispatching functions
1088 ** overflow detection when coercing signed bytes to fixnums on x86-64
1089 ** is now implemented with one IMUL instruction instead of three shifts
1090 ** more efficient bit-vector access on x86 and x86-64
1091 ** more efficient access to raw structure slots on x86 and x86-64
1092 * fixed some bugs revealed by Paul Dietz' test suite:
1093 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1094 return its argument.
1096 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1097 * feature: thread support on Solaris/x86, and experimental thread support
1099 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1101 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1102 default method for SLOT-UNBOUND.
1103 * minor incompatible change: prevent the user from specializing the
1104 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1105 somewhat counter to the intent of the protocol, I (CSR) think, and
1106 additionally it just doesn't work in SBCL as currently
1107 implemented, thanks to optimizations (that are always valid for
1108 the other three SLOT-VALUEish functions, but not for the setter).
1109 * minor incompatible change: the :SB-LDB feature is now enabled by
1110 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1111 the low-level debugger.
1112 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1113 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
1114 down to an SB-SYS:FD-STREAM, allowing direct communication in
1115 more cases. Temporary files and pipes are still used as a fallback
1117 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1118 on the non-reentrant C functions localtime(3) and gmtime(3).
1119 * bug fix: global optimization policy was not visible in LOCALLY and
1121 * bug fix: class objects can be used as specializers in methods.
1122 (reported by Pascal Costanza)
1123 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1124 with a type error. (reported by blitz_ on #lisp)
1125 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1126 failed with a type error. (reported by Pascal Bourguignon)
1127 * bug fix: merging pathnames against defaults with :DIRECTORY
1128 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1129 (reported by James Y Knight)
1130 * bug fix: saving large (>2GB) cores on x86-64 now works
1131 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1132 constant index and a (simple-array (signed-byte 32)) array
1133 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1134 error (patch by Robert J. Macomber)
1135 * feature: TIME now displays the amount of run-time spent in GC
1136 * bug fix: The debugger now does a better job of respecting
1137 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1138 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1139 workaround for bug 403.)
1140 * bug fix: floating point exception handling now works on FreeBSD
1141 (thanks to NIIMI Satoshi)
1142 * fixed some bugs revealed by Paul Dietz' test suite:
1143 ** MISC.641: LET-conversion were not supposed to work in late
1145 * improvements to the Win32/x86 port:
1146 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1147 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1149 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1150 * new feature: source path information is generated for macro-expansion
1151 errors for use in IDE's like Slime (thanks to Helmut Eller)
1152 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1153 * bug fix: compiler does not loop forever on an invalid type in
1155 * improvement: compilation of most CLOS applications is significantly
1157 * optimization: added a limited bytecode compiler for simple toplevel
1158 forms, speeding up compilation and FASL loading
1159 * bug fix: the statistical profiler now properly distinguishes anonymous
1162 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1163 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1164 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1165 into subclasses of the finalized class. Now user calls to
1166 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1167 system return before any subclasses are finalized.
1168 * minor incompatible change: The reader no longer ignores errors
1169 regarding non-existent packages in #+ and #- feature tests.
1170 * new feature: command line options --no-sysinit, --no-userinit to
1171 inhibit loading the corresponding init files
1172 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1173 for sending data through UDP sockets (thanks to François-René Rideau)
1174 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1175 error is signalled instead (thanks to François-René Rideau)
1176 * minor incompatible change: Error signalling behaviour of lexical
1177 operations violating package locks has changed slightly. Refer to
1178 documentation on package locks for details.
1179 * enhancement: EVAL can process IF-expressions without resorting to the
1181 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1182 constant-folded properly due to missing out-of-line functions.
1183 (reported by Mika Pihlajamäki)
1184 * bug fix: LISTEN sometimes returned T even in cases where no data was
1185 immediately available from the stream
1186 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1187 were reversed. (reported by Levente Mészáros)
1188 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1189 when given a vector displaced to an adjustable array. (reported
1191 * bug fix: derivation of float boundaries from numbers outside the
1192 appropriate float range (reported by John Wiseman)
1193 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1195 * bug fix: precomputing cache entries for generic functions with
1196 some subclasses of specializers as yet invalid does not attempt to
1197 fill a cache line with a negative offset. (reported by Levente
1199 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1200 allow condition class objects as arguments to DOCUMENTATION and
1201 (SETF DOCUMENTATION); only find and set documentation for
1202 structure names for the STRUCTURE doc-type. (suggested by Gary
1204 * improvements to the Win32/x86 port:
1205 ** (user-homedir-pathname) and default initialization file
1206 locations now know about the user's "Documents and Settings"
1207 directory (thanks to Yaroslav Kavenchuk)
1208 ** run-program is implemented (thanks to Mike Thomas)
1209 ** sockets support (thanks to Timothy Ritchey)
1210 ** better backtrace support (thanks to Alastair Bridgewater)
1211 ** sb-grovel supported
1212 ** asdf-install and sb-posix work somewhat
1213 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1214 * improvements to the Solaris/x86 port:
1215 ** works on Solaris 11/Solaris Express
1216 ** floating-point exception handling support
1217 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1218 * fixed some bugs revealed by Paul Dietz' test suite:
1219 ** REMOVE-METHOD returns its generic function argument even when
1220 the method is not one of the generic functions' methods.
1221 ** objects declared as MEMBER types can be admissible arguments to
1222 structure accessors.
1223 ** printing characters should simply be printed by the FORMAT ~:C
1225 ** compiler failure when compiling functions with hairy constant
1226 defaults for optional parameters.
1227 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1228 function, which is already optimized.
1230 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1231 * new platform: experimental support for SBCL x86/Darwin, including
1232 MacOS X 10.4.5 on Intel.
1233 * new feature: Unicode character names are now known to the system
1234 (through CHAR-NAME and NAME-CHAR).
1235 * new feature: the filesystem location of SBCL's core file is
1236 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1237 * minor incompatible change: the contrib modules SB-POSIX and
1238 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1239 this change is to make it easier to distribute
1240 location-independent binaries.
1241 * bug fix: as implied by AMOP, standardized classes no longer have
1242 slots named by external symbols of public packages. (reported by
1244 * optimization: calling functions via constant symbols -- as in
1245 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1246 via the function object as in (FUNCALL #'FOO).
1247 * optimization: on x86 and x86-64, the calling convention for the
1248 case of dealing with an unknown number of values has been altered
1249 to be friendlier to the prediction heuristics implemented,
1250 particularly with reference to CALL and RET pairing. (thanks to
1251 Alastair Bridgewater)
1252 * optimization: on x86, the code for access to thread-local symbol
1253 values and binding/unbinding of thread-local symbols is smaller.
1254 (thanks to Alastair Bridgewater)
1255 * enhancement: CONSTANTP is now able to determine constantness of
1256 more complex forms, including calls to constant-foldable standardized
1257 functions and some special forms beyond QUOTE.
1258 * fixed bug: occasional GC crashes on Solaris/x86
1259 * optimization: x86-64 supports stack allocation of results of simple
1260 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1261 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1262 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1263 (thanks to James Knight)
1264 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1265 by the standard (thanks to Stephen Compall)
1267 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1268 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1269 be used for bundling the runtime and the core file into one
1270 executable binary. This feature is not currently supported on all SBCL
1271 platforms. (thanks to James Bielman and NIIMI Satoshi)
1272 * new feature: a generational or ephemeral garbage collector is now
1273 the default on the PowerPC platform (both Linux and Darwin). The
1274 old Cheney (stop and copy) collector is a build-time option.
1275 (thanks to Cyrus Harmon, after Raymond Toy)
1276 * minor incompatible change: the method by which SBCL finds its
1277 contributed modules has changed; it no longer relies on symbolic
1278 links from an $SBCL_HOME/systems directory, but searches directly
1279 in the subdirectories of $SBCL_HOME.
1280 * enhancement: the dynamic heap size on the Linux/PPC platform is
1281 markedly larger, even using the older Cheney garbage collector.
1282 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1283 certain complicated string types. (reported by Gary King)
1284 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1285 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1286 * fixed bug: DOCUMENTATION on structures no longer signals an
1287 error if no structure type of the right name exists. (reported by
1289 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1290 applicable non-standard primary or :AROUND method on
1291 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1292 no longer cause unbound variable errors. (reported by Kevin Reid)
1293 * fixed bug: metacircle resolution in cases where methods have slots
1294 added before the slots from STANDARD-METHOD. (reported by Jean
1296 * fixed bug: the Power PC assembly code for calling into lisp
1297 sometimes computed its return address wrongly (depending on the
1298 15th bit of the address, fixed at link time). This used to
1299 manifest itself in a segmentation violation while building PCL.
1300 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1301 many others over the years)
1302 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1303 the stack pointer (treated as a signed integer) is negative.
1304 (thanks to Peter van Eynde)
1306 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1307 * new platform: experimental support for the Windows operating
1308 system has been added. (thanks to Alastair Bridgewater)
1309 * fixed several bugs in and robustified the PPC FFI (including
1310 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1311 * bug fix: allow non-simple string symbol names (reported by Paul
1313 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1315 * bug fix: saving a core corrupted callbacks on x86/x86-64
1316 * bug fix: closed a loophole in metacircularity detection and
1317 grounding in the PCL implementation of CLOS.
1318 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1319 (reported by tomppa on #lisp)
1320 * bug fix: clear the direction flag on Lisp -> C transitions, as
1321 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1322 (reported by Andrej Grozin and Hendrik Maryns)
1323 * optimization: major improvements to GC efficiency on GENCGC platforms
1324 * optimization: faster implementation of EQUAL
1325 * optimization: emit more efficient opcodes for some common
1326 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1327 * optimization: several other minor code-generation improvements on x86-64
1328 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1330 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1331 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1332 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1333 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1334 by ANSI as a generic function, and for consistency (SETF
1335 GENERIC-FUNCTION-NAME) is treated likewise.
1336 * fixed bug #233.b: make constraint propagation notice when a variable
1337 value is changed after it is referenced but before it is used
1338 * fixed bug #296: no more arbitrary behaviour from filenames with
1339 odd characters as --load arguments. (reported by Adam Warner)
1340 * fixed bug #390: :CHARACTER-SET pathname components now work as
1341 expected. (reported by Tim Daly Jr)
1342 * fixed bug #391: complicated :TYPE intersections in slot
1343 definitions no longer cause an error in PCL internals.
1344 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1345 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1346 returning the number of octets which would be written to the
1347 file-stream. (thanks to Robert J. Macomber)
1348 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1349 arguments to the internal stream functions. (thanks to David
1351 * bug fix: stack exhaustion is now handled on the x86/SunOS
1352 platform. (thanks to Daisuke Homma)
1353 * bug fix: more accurate ROOM results on GENCGC platforms
1354 * optimization: improved type inference for arithmetic-for
1355 index variables in LOOP
1356 * optimization: faster floating-point SQRT on x86-64
1357 * fixed some bugs revealed by Paul Dietz' test suite:
1358 ** DOCUMENTATION returns NIL instead of "" for method combinations
1359 that don't have a docstring
1361 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1362 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1363 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1364 therefore are not customizeable by user code (as seems to be at
1365 least permitted and maybe required by AMOP). As a consolation,
1366 however, the SBCL implementation of these functions now calls
1367 REINITIALIZE-INSTANCE as specified by AMOP.
1368 * bug fix: slot-definition documentation is propagated as per ANSI
1369 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1370 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1371 argument, as do eslotd initialization methods. (from Pascal
1372 Costanza's "Closer" project)
1373 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1374 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1376 * bug fix: it is now possible to have more than one subclass of
1377 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1378 (reported by Bruno Haible, Pascal Costanza and others)
1379 * bug fix: the dependent update protocol now works for generic
1380 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1381 and Pascal Costanza)
1382 * bug fix: condition-class instances corresponding to
1383 DEFINE-CONDITION forms are now created eagerly. (reported by
1384 Kalle Olavi Niemitalo on comp.lang.lisp)
1385 * bug fix: floating point printing is more accurate in some
1386 circumstances. (thanks to Simon Alexander)
1387 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1388 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1389 * bug fix: callbacks on OS X now preserve stack-alignment.
1390 (thanks to Cyrus Harmon)
1391 * enhancement: the x86-64 disassembler is much better at
1392 disassembling SSE instructions. (thanks to Lutz Euler)
1393 * enhancement: CHECK-TYPE on a variable now allows type-inference
1394 (thanks to Vincent Arkesteijn)
1395 * optimization: improved performance of EUC-JP external format.
1396 (thanks to NIIMI Satoshi)
1397 * optimization: performance improvements to IO on file streams of
1398 :ELEMENT-TYPE CHARACTER
1399 * optimization: much faster memory allocation on x86-64
1400 * optimization: faster garbage collections (latency and throughput)
1402 * optimization: faster bignum subtraction and division on x86 and x86-64
1403 (thanks to Lutz Euler)
1404 * optimization: more accurate type-inference for loops that use a
1405 floating point index variable or a negative step.
1407 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1408 * bug fix: add a workaround to SBCL looping infinitely at startup on
1409 Linux kernels with apparently buggy implementations of personality().
1410 (thanks to Svein Ove Aas)
1411 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1412 (thanks to David Lichteblau)
1413 * bug fix: local bindings shadow global symbol macros for
1414 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1415 * optimization: non-open coded uses of numeric comparison operators
1416 (e.g. >) no longer cons when called with more than one parameter
1417 on platforms supporting dynamic-extent allocation.
1418 * enhancement: saving cores with foreign code loaded is now supported
1419 on MIPS/Linux in addition to the previously supported platforms.
1420 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1421 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1422 * bug fix: division by zero in sb-sprof when no samples were collected
1423 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1424 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1425 (thanks to Alexander Kjeldaas)
1426 * new feature: ignoring the return values of destructive functions
1427 like NREVERSE signals a compile-time style-warning.
1428 (thanks to Kevin Reid)
1429 * new feature: the alignment of alien structure fields can be
1430 explicitly specified. (thanks to Cyrus Harmon)
1431 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1432 and dump core on SIGQUIT
1434 ** incompatible change: threads do not inherit values of specials
1435 from their parents (see manual)
1436 ** bug fix: threads stacks belonging to dead threads are freed by the
1437 next exiting thread, no need to gc to collect thread stacks anymore
1438 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1439 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1440 ** bug fix: dynamic variable and thread start related gc lossage
1441 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1443 * fixed some bugs revealed by Paul Dietz' test suite:
1444 ** SUBTYPEP is slightly more accurate on heinously complicated
1445 CONS types where some of the members have uncertain (in the
1446 NIL, NIL sense) type relationships to each other.
1448 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1449 no longer purified unless :PURIFY T is explicitly specified.
1450 ** Non-purified cores are significantly smaller than before
1452 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1453 * new feature: timers based on Zach Beane's excellent timer package
1454 * added support for the following external formats: koi8-u,
1455 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1456 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1457 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1458 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1459 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1460 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1461 * incompatible change: a threaded SBCL will no longer revert to
1462 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1463 * bug fix: interrupts are disabled until startup is complete; no
1464 more sigsegvs when receiving a signal to soon
1465 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1467 * bug fix: add a workaround for the memory randomization features in
1468 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1469 workaround will only be in effect on systems with the proc filesystem
1471 * bug fix: printing objects of type HASH-TABLE signals a
1472 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1474 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1475 have been running for over 50 days. (reported by Gilbert Baumann)
1476 * bug fix: the logic for getting names of functions gets less
1477 confused when confronded with alternate-metaclass
1478 funcallable-instances. (reported by Cyrus Harmon)
1479 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1480 consistent, even on internal alternate-metaclass objects.
1481 * bug fix: flush closure information collected by physical
1482 environment analysis prepass before the main pass. (bug reported
1484 * bug fix: compiler pack phase does not modify a hashtable, which is
1485 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1486 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1487 may be expanded. (reported by Alexander <malishev> on c.l.l)
1488 * bug fix: no more style-warnings when compiling code using LAST
1489 under high-SPEED low-SPACE settings. (reported by David Wallin
1491 * fixed some incompatibilities between SBCL's MOP and the MOP
1493 ** the METAOBJECT class is now implemented;
1494 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1495 STANDARD-OBJECT, as required;
1496 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1497 now compatible (as required by VALIDATE-SUPERCLASS); there
1498 remains a consistency requirement over the presence or absence
1499 of the FUNCTION class in the superclass list of finalized
1500 classes; see the manual for more details;
1501 ** the :AROUND method for COMPUTE-SLOTS on
1502 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1503 requested slot ordering.
1505 ** bug fix: parent thread now can be gc'ed even with a live
1507 ** bug fix: binding a special with PROGV to no value is not
1508 the same as that symbol not having been bound (thanks to
1510 ** bug fix: binding specials is thread safe (thanks to
1512 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1513 and SB-SPROF do not die with 'no handler for signal XX in
1514 interrupt_handle_now(..)' anymore
1515 ** bug fix: WITH-TIMEOUT works with multiple running threads
1516 * fixed some bugs revealed by Paul Dietz' test suite:
1517 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1518 the :method-class keyword argument.
1520 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1521 * new port: the Solaris operating system on x86 processors is now
1522 mostly supported, though some rough edges in the environment
1523 remain. (thanks to Daisuke Homma)
1524 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1525 space for its heap. (thanks to Thiemo Seufer)
1526 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1527 closures. (thanks to Thiemo Seufer)
1528 * minor incompatible change: eof selects abort in the debugger.
1529 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1530 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1532 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1533 deprecated, and will go away in a future revision of SBCL.
1534 * minor incompatible change: GC-ON and GC-OFF are no longer
1535 implemented with a counter, it does not matter how many times gc
1536 is switched on or off
1537 * bug fix: discriminating functions for generic function classes
1538 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1539 make invalid assumptions about method precedence order. (reported
1541 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1542 platforms. (thanks to Thiemo Seufer)
1543 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1544 * bug fix: correct pathname printing with printer escaping is on.
1545 (thanks to Kevin Reid)
1546 * bug fix: complex VOP definitions in "user-space" no longer trigger
1547 package locks. (reported by Zach Beane)
1548 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1549 for funcallable-instance functions, and is no different from
1551 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1552 characters in the current readtable. (reported by Nicholas Neuss)
1553 * bug fix: SUBTYPEP on various CONS types returns more a more
1554 accurate acknowledgment of its certainty.
1555 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1556 lists in some cases. This partially fixes bug 384.
1557 * flush all standard streams before prompting in the REPL and the
1559 * bug fix: signal handling and triggering gc do not conflict
1560 directly anymore, in particular a high frequency sb-sprof does
1561 not prevent gc from running
1562 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1563 approximation for timezone and DST information between the
1564 universal time epoch and the smallest negative 32-bit time_t.
1565 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1566 year 1899 so long as the encoded time is non-negative.
1567 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1568 the correct answer for non-constant rotate amounts when performing
1569 an inline 32-bit rotation.
1571 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1572 there is only one thread in the session
1573 ** bug fix: memory leak for streams created in one thread and
1574 written to in another
1575 ** bug fix: lockup when compiled with gcc4
1576 ** bug fix: race that allows the gc to be triggered when gc is
1578 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1579 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1581 ** bug fix: finished threads are gc'ed properly
1582 * fixed some bugs revealed by Paul Dietz' test suite:
1583 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1584 has arguments with a different set of applicable methods from
1585 the orignal arguments.
1586 ** The type error thrown by MAP now has a correct expected-type
1588 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1589 name a compiled function.
1590 ** Three MISC tests where a large bignum was improperly coerced to
1591 a float that couldn't represent that bignum during type
1592 derivation were fixed.
1593 ** SUBTYPEP can now handle types involving the negation of a
1594 list-form FUNCTION type.
1595 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1596 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1597 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1599 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1600 * New feature: Experimental support for bivalent streams: streams
1601 opened with :element-type :default now allow character and binary
1602 (unsigned-byte 8) I/O
1603 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1604 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1606 * bug fix: no more highly sporadic "couldn't check whether ~S is
1607 readable" when reading a stream and an interrupt hits in the middle
1608 of a select system call
1609 * compiler better recognizes complex arrays (reported by Eduardo
1611 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1612 for variables on SBCL built with linkage-tables. (reported by Luis
1614 * various error reporting improvements.
1615 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1616 (Thanks to Thiemo Seufer)
1617 * bug fix: nested reader invokations work correctly
1618 * bug fix: it is possible to have simultaneous references to foreign
1619 code and foreign data with the same name.
1621 ** added x86-64 support
1622 ** incompatible change: the threading api now works with thread
1623 objects instead of thread ids
1624 ** bug fix: threads are protected from signals and interruption when
1625 starting up or going down
1626 ** bug fix: a race where an exiting thread could lose its stack to gc
1627 ** bug fix: don't halt on infinite error in threads if possible
1628 ** fixed numerous gc deadlocks introduced in the pthread merge
1629 ** bug fix: fixed thread safety issues in read and print
1630 ** bug fix: debugger doesn't hang on session lock if interrupted at
1631 an inappropriate moment
1632 ** bug fix: run-program is now thread safe(r)
1633 ** bug fix: inner with-recursive-lock no longer releases the mutex
1634 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1635 * fixed some bugs revealed by Paul Dietz' test suite:
1636 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1637 EXPECTED-TYPE slots filled.
1638 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1640 ** MAKE-CONDITION accepts classes as type-designators.
1641 ** COMPILE may never return NIL.
1642 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1643 range before calling Unix time functions
1645 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1646 * numerous signal handling fixes to increase stability
1647 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1648 * minor incompatible change: we now correctly canonize default
1649 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1650 as per the MOP, rather than the historical (INITARG INITFUNCTION
1651 INITFORM). (reported by Bruno Haible)
1652 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1653 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1654 for more information.
1655 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1656 pathname is a directory pathname.
1657 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1658 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1660 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1661 :METACLASS argument in addition to a class name. (reported by
1662 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1663 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1664 (reported by Bruno Haible; patch from Gerd Moellmann)
1665 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1667 * bug fix: more cleanups to the floating point exception handling on
1668 x86-64 (thanks to James Knight)
1669 * bug fix: the compiler does not try to constant fold calls of
1670 COERCE and BIT-* functions when they return freshly constructed
1671 objects. (reported by Nikodemus Siivola and Paul Dietz)
1672 * optimization: improved the MIPS versions of generic (in the
1673 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1674 * optimization: direct conversion of (unsigned-byte 32) to floats on
1675 the PowerPC platform.
1676 * optimization: structure instances with raw slots now use less
1677 memory, and probably show better memory locality. (thanks to
1679 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1680 are treated as requests for stack allocation on the x86-64,
1681 Alpha-32, PPC and SPARC platforms.
1682 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1683 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1684 (thanks to Tony Martinez)
1686 ** gcing a dead thread can no longer lead to lockups
1687 ** threads block signals until they are set up properly
1688 ** errno is no longer shared by threads
1689 ** interrupt-thread restores the eflags register on x86
1690 ** fixed some lockups due to gc/thread interaction
1691 * fixed some bugs revealed by Paul Dietz' test suite:
1692 ** invalid dotted lists no longer raise a read error when
1693 *READ-SUPPRESS* is T
1694 ** signal an error if a symbol that names a declaration is used
1695 as the name of a type, or vice versa
1696 ** allow using the (declare (typespec var*)) abbreviation for
1697 (declare (type typespec var*)) with all type specifiers
1698 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1699 ** always return NIL from PPRINT-POP when OBJECT is NIL
1700 ** don't signal errors when pretty-printing malformed LABELS,
1701 FLET or MACROLET forms
1702 ** declarations in a DOLIST body are also in scope for the
1704 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1706 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1709 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1710 * fixed cross-compiler leakages that prevented building a 32-bit
1711 target with a 64-bit host compiler.
1712 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1713 opened with :IF-EXISTS :OVERWRITE.
1714 * fixed bug 281: error for an invalid qualifier in a short-form method
1715 combination method is not signalled until the faulty method is called.
1716 * bug fix: iteration variable type inferrer failed to deal with open
1717 intervals. (reported by Alan Shields)
1718 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1719 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1720 or more runtime options were provided to the sbcl binary.
1721 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1722 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1723 * optimization: there's now a fast-path for fixnum arguments in the
1724 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1725 * optimization: the code generated on x86-64 is more compact thanks
1726 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1727 * bug fix: floating-point exception handling now partly works on
1728 x86-64. (Thanks to James Knight)
1729 * improvement to the MIPS backend from Thiemo Seufer: C-style
1730 64-bit long long arguments and return values to alien functions
1732 * fixed some bugs revealed by Paul Dietz' test suite:
1733 ** the type-error signalled from WARN has a filled-in DATUM slot.
1734 ** the type-error required when a stream is not associated with
1735 a file has the stream as its datum.
1736 ** type-errors on single-floats on x86-64 no longer have
1737 :INVALID-OBJECT as the datum
1738 ** the type-errors signalled for invalid function names now have
1739 a correct expected type
1740 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1741 for structures defined with a :TYPE. Documentation strings for
1742 typed structures are no longer immediately discarded
1743 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1744 broadcast streams and synonym streams. FILE-LENGTH now also works
1745 on broadcast streams.
1747 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1748 * incompatible change: the --noprogrammer option, deprecated since
1749 version 0.7.5, has been removed. Please use the equivalent
1750 --disable-debugger option instead.
1751 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1753 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1754 inoperational for a while now) has been completely removed.
1755 * null lexical environments are now printed as #<NULL-LEXENV>,
1756 significantly reducing the amount of clutter in typical backtraces.
1757 * documentation on weak pointers, finalization, and after GC hooks
1758 has been added to the manual.
1759 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1760 as other specialized array types, is much faster. SUBSEQ and
1761 COPY-SEQ on such arrays have also been sped up.
1762 * optimization: EQL is now more efficient when at least other argument
1763 is known to be of type (OR FIXNUM (NOT NUMBER)).
1764 * fixed bug: the runtime is now less vulnerable to changes in the
1765 size of the SBCL object on OS X, and virtual memory is reserved for
1766 all spaces that need to be at a fixed address.
1767 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1768 * fixed bug: finalizers and after GC hooks that cause consing are now
1770 * fixed bug: compiler error messages and summaries are now printed to
1771 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1772 * fixed inference of the upper bound of an iteration variable.
1773 (reported by Rajat Datta).
1774 * fixed bug 211e: calling local functions with duplicated constant
1775 keyword argument no longer causes a bogus style warning about an
1777 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1778 ftype declaration to be disregarded. (reported by Dave Roberts)
1779 * fixed bug 373: caused by erronous compilation of references to alien
1780 variables in the runtime on ppc/darwin.
1781 * fixed bug 376: CONJUGATE type deriver.
1782 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1783 (reported by Baughn on #lisp)
1784 * a cross-compiler bug on non-x86 platforms has been identified and
1785 fixed. (thanks to Bruno Haible)
1786 * improvements to the MIPS runtime code for increased stability.
1787 (thanks to Thiemo Seufer)
1788 * increased the maximimum compact environment size to allow
1789 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1790 * partial workaround for bug 135: don't name the function we're
1791 calling for hairy cases of EVAL, so as not to accumulate one environment
1792 entry per call to EVAL. (reported by Kevin Reid)
1793 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1794 * optimization: type testing for non-vector arrays should be faster.
1795 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1797 * bug fix: setting 31st element of a bit vector to zero did not work
1799 * bug fix: redefining a class definition which failed due to a
1800 previous accessor / function clash now works (but see BUGS entry
1801 #380 for more problems in this area). (thanks to Zach Beane)
1802 * the long form of DEFINE-METHOD-COMBINATION disables method group
1803 checking when given a single method group with pattern *. (thanks
1805 * on x86 compiler supports stack allocation of results of simple
1806 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1807 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1808 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1809 * fixed some bugs related to Unicode integration:
1810 ** the restarts for recovering from input and output encoding
1811 errors only appear when there is in fact such an error to
1813 * fixed some bugs revealed by Paul Dietz' test suite:
1814 ** MISC.549 and similar: late transformation of unsafe type
1815 assertions into derived types caused unexpected code
1817 ** SCALE-FLOAT type deriver is less wrong.
1818 ** type derivers for EXP, LOG and similar functions compute result
1819 types for complex arguments better.
1820 ** (MISC.563) CONJUGATE type deriver works for very restricted
1822 ** out-of-line type testers for character strings are available.
1823 ** EQUAL compiler transform understands specialness of objects
1825 ** accessing double-floats stored on the stack now works on x86-64.
1826 ** debugger internals could sometimes create invalid lispobjs,
1827 resulting in GC crashes.
1828 ** MISC.548: type check weakening can convert required type into
1830 ** initialization forms for bindings are not in scope of free special
1833 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1834 * incompatible change: thread support for non-NPTL systems has
1835 been removed - locking is buggy and unreliable. A threaded
1836 SBCL build will now warn at startup and refuse to create
1837 new threads, unless futex support is detected in the kernel
1838 * incompatible change: the top level REPL now has only an ABORT
1839 restart associated with it, not TOPLEVEL and ABORT as it used to.
1840 TOP and TOPLEVEL are now available as debugger commands for
1841 returning to the top level.
1842 * incompatible change: forms evaluated in the REPL now use the
1843 global optimization policy.
1844 * incompatible change: user- and system-initialization files are
1845 no longer processed with LOAD, but by READ and EVAL; hence the
1846 global optimization policy, startup package, readtable, etc,
1848 * The .fasl file format number has been incremented because of
1849 various incompatible changes.
1850 * internal entry point details and argument counts no longer appear
1851 in backtraces unless explicitly requested by setting
1852 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1853 * built-in and standard functions no longer have names like "top
1854 level local call to FOO".
1855 * fixed bug 32: functions defined in non-null lexical environments
1856 now have more legible printed representation
1857 * fixed bug 33: functions defined in non-null lexical environemnts
1858 are now more amenable to inspection by INSPECT.
1859 * workaround for bug 354: XEPs no longer appear in backtraces unless
1860 explicitly requested.
1861 * fixed bug: receiving the signal which results from attempting to
1862 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1863 SIGBUS on other *BSDs) on architectures where the C stack is also
1864 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1865 to debugger confusion or wild instability. (reported by Cheuksan
1867 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1868 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1869 (reported by Lutz Euler)
1870 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1871 compiled code. (reported by Paul Dietz)
1872 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1873 specialized parameter to a method to something that is not TYPEP
1874 the specializer is now possible.
1875 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1876 face of package deletion.
1877 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1878 pathname. (reported by David Tolpin on c.l.l)
1879 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1880 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1881 STRING-STREAM and FILE-STREAM, respectively.
1882 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1883 than previously; in addition, its test suite is now run on build.
1884 (thanks to Luke Gorrie)
1885 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1886 * optimization: added a immediate representation for single-floats
1888 * fixed some bugs revealed by Paul Dietz' test suite:
1889 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1890 ** attempting to create a package with a colliding nickname causes
1891 correctable errors to be signalled.
1892 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1893 ** several x86-64 backend bugs related to sign-extension of immediate
1896 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1897 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1898 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1900 * fixed loading of multiply forward-referenced layouts.
1901 (thanks to Cheuksan Wang)
1902 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1903 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1904 (see COMPILE-FILE documentation for details of :PRINT option)
1905 * fixed bugs 19 and 317: fixed-format floating point printing is
1906 more accurate. This also fixes a bug reported by Adam Warner
1907 related to the ~@F format directive.
1908 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1910 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1911 dispatch table if the from-char is a dispatch macro character.
1912 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1913 by the wordsize no longer ignore the last word. (reported by Lutz
1915 * fixed bug in type checking of dynamic-extent variables. (reported
1917 * optimization: sequence traversal functions use their freedom to
1918 coerce function designators to functions.
1919 * optimization: code with many calls to CLOS methods specialized on
1920 CLOS classes has had redundant type checks removed.
1921 * optimization: added declarations to speed up operations that access
1922 the internal character database (for example STRING-UPCASE)
1923 * optimization: comparison operations between floats and sufficiently small
1924 fixnums no longer create extra rationals
1925 * fixed some bugs related to Unicode integration:
1926 ** portions of multibyte characters at the end of buffers for
1927 character-based file input are correctly transferred to the
1928 start of the buffer at the next read.
1929 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1930 passing it through to OPEN.
1931 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1932 argument given to internal calls to OPEN.
1933 ** the built-in comment readers (introduced by character sequences
1934 ";" and "#|") are more forgiving to encoding errors; they will
1935 STYLE-WARN and then attempt to resync the stream at a character
1936 boundary. (thanks to Teemu Kalvas)
1937 * fixed some bugs in the x86-64 port:
1938 ** Negative short int return values from c-calls are sign-extended
1940 ** The stack is aligned to 16-bytes for c-calls, as required by
1941 the ABI. (thanks to Cheuksan Wang)
1942 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1943 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1944 for enums. (thanks to Vincent Arkesteijn)
1945 ** Multiple small optimizations and bugfixes for floating point
1947 * fixed some bugs revealed by Paul Dietz' test suite:
1948 ** Space, Tab, Linefeed, Return and Page have the invalid
1949 secondary constituent character trait.
1950 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1952 ** WITH-INPUT-FROM-STRING should only update the index place on
1954 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1955 works more reliably.
1956 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1957 with one-dimensional arrays with fill pointers.
1958 ** TYPE-OF failed on a complex with an integer realpart and a
1960 ** compiler failure during type inference for the code of form
1961 (IF (EQL X (THE ...)) ...) (MISC.535).
1963 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1964 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1965 platform. The port supports 61-bit fixnums, large memory spaces
1966 and reloading shared object files.
1967 * enhancement: saving cores with foreign code loaded is now
1968 supported on ppc/Darwin in addition to the previously supported
1970 * enhancement: the statistical profiler now walks deeper into the
1971 call stack for more meaningful call-graphs and accrued time
1972 reports (x86/x86-64 only). It also now reports time spent in
1974 * enhancement: it is now possible to trace most individual methods
1975 of a generic function in addition to tracing the generic function
1977 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1979 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1980 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1981 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1982 produces an error. (thanks to Vincent Arkesteijn)
1983 * bug fix: NAMESTRING on pathnames with :WILD components in their
1984 directories works correctly. (thanks to Artem V. Andreev)
1985 * fixed bug 125: compiler preserves identity of closures. (reported
1987 * bug fixed: functions with &REST arguments sometimes failed with
1988 "Undefined function" when compiled with (DEBUG 3). (reported by
1990 * bug fix: overflow during compiling of setting element of a bit
1991 vector with constant index and value. (reported by Timmy Douglas)
1992 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1993 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1994 * on x86 compiler partially supports stack allocation of dynamic-extent
1996 * GO and RETURN-FROM do not check the extent of their exit points
1997 when compiled with SAFETY 0.
1998 * fixed some bugs related to Unicode integration:
1999 ** encoding and decoding errors are now much more robustly
2000 handled; it should now be possible to recover even from invalid
2001 input or output to the terminal. (thanks to Teemu Kalvas)
2002 ** provided a first cut at implementing STRING-TO-OCTETS and
2003 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2004 ** altered the SB-MD5 contributed module slightly, changing the
2005 interface just enough for it to be supportable for builds where
2006 lisp characters are not eight bits.
2007 * fixed some bugs revealed by Paul Dietz' test suite:
2008 ** the FORMATTER-generated functions for ~V[ conditionals require
2009 the correct number of arguments.
2010 ** READ-FROM-STRING returns the mandated second value when applied
2011 to displaced strings.
2012 ** the #\Rubout and #\Backspace characters are treated as invalid
2013 constituent characters by the tokenizer.
2015 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2016 * new feature: reloading changed shared object files with
2017 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2018 * new feature: references to foreign variables and functions
2019 can now be compiled and loaded before the corresponding shared
2020 object file is loaded, as long as the foreign definitions are
2021 available at runtime.
2022 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2023 supported. (thanks to Dan Debertin)
2024 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2025 just keywords. (thanks to Vincent Arkesteijn)
2026 * fixed bug #331: structure-class instances corresponding to
2027 DEFSTRUCT forms are now created eagerly.
2028 * fixed bug #345: backtraces from calls to undefined functions work
2029 on x86 as well. Related bug #61 is now also partially fixed on x86
2030 (backtraces from throws to unknown catch tags.)
2031 * bug fix: lambda-list parsing is now stricter vrt. order and number
2032 of lambda-list keywords.
2033 * bug fix: as specified by AMOP, an error is signalled if a
2034 class-option appears multiple times in a DEFCLASS form. (reported
2036 * bug fix: RANDOM can be compiled when the compiler derives the type
2037 of its numeric argument as a disjoint set of small integers.
2038 (reported by Paul Dietz)
2039 * bug fix: starting a core saved with shared objects loaded when
2040 those objects are not available no longer causes threaded SBCL to
2041 hang. (reported by Sean Ross)
2042 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2044 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2045 argument, which must always be NIL. (reported by Kalle Niemitalo)
2046 * bug fix: printing 1.0d+23 no longer results in an error.
2047 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2048 * bug fix: structure slot setters preserve evaluation order. (thanks
2050 * fixed some bugs related to Unicode integration:
2051 ** RUN-PROGRAM can allow its child to take input from a Lisp
2052 stream. (reported by Stefan Scholl)
2053 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2054 locales. (reported by Ken Causey)
2055 * fixed some bugs revealed by Paul Dietz' test suite:
2056 ** INCF, DECF and REMF evaluate their place form as specified in
2058 ** FORMATTER expands ~{ ~} iteration directives with V or #
2059 parameters correctly.
2060 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2061 consequent uses no arguments correctly.
2062 ** the system has a partial understanding of the (COMPLEX RATIO)
2064 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2067 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2068 * new feature: a build-time option (controlled by the :SB-UNICODE
2069 keyword feature, enabled by default) for building the system with
2070 support for the entire 21-bit character space defined by the
2072 * new feature: the system now has rudimentary external-format
2073 support; the primary user-visible change at this time is that
2074 characters with the high bit set (such as lower-case-e-acute) will
2075 print correctly to a terminal in a UTF-8 environment.
2076 * minor incompatible change: BASE-CHAR no longer names a class;
2077 however, CHARACTER continues to do so, as required by ANSI.
2078 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2079 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2080 has been moved to the SB-EXT package (temporarily re-exported from
2082 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2083 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2085 * fixed bug #351: better error-handlind and reporting for malformed
2087 * fixed bug #350: bignum-printing is now more memory-efficient,
2088 allowing printing of very large bignums, eg. (expt 2 10000000).
2089 (reported by Bruno Haible)
2090 * fixed bug #302: better primitive-type selection for intersection
2092 * fixed bug #308: non-graphic characters now all have names, as
2093 required. (reported by Bruno Haible)
2094 * bug fix: redefining a class with different superclasses now correctly
2095 removes it from the direct-subclasses of its previous superclasses.
2096 (reported by David Morse)
2097 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2098 new value now works. (reported by Bruno Haible)
2099 * bug fix: correct canonicalization of multiple non-standard slot
2100 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2101 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2102 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2103 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2104 now exists, an signals an error.
2105 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2106 during macroexpansion for non-iteration variables as well. (reported
2107 by Bruno Haible for CMUCL)
2108 * bug fix: Cyclic structures and unprintable objects in compiler
2109 messages no longer cause errors. (reported by Bruno Haible)
2110 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2111 and READ-FROM-STRING all now return a primary value of NIL if
2112 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2113 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2114 (reported by Bruno Haible for CMUCL)
2115 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2116 do not designate a condition. (reported by Bruno Haible for
2118 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2119 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2120 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2121 permitting resolution in favour of any of the conflicting symbols.
2122 (reported by Bruno Haible for CMUCL)
2123 * bug fix: EQUAL compiler optimizations is less aggressive on
2124 strings which can potentially compare true despite having distinct
2125 specialized array element types.
2126 * bug fix: unit enumerations can be defined without dividing by
2127 zero. (thanks to Vincent Arkesteijn)
2128 * FORMAT compile-time argument count checking has been enhanced.
2129 (report from Bruno Haible for CMUCL)
2130 * a partial workaround for the bug 262: the compiler does not try to
2131 inline-expand a local function doing RETURN-FROM from a deleted
2132 BLOCK. (thanks to Peter Denno for the bug report and to David
2133 Wragg for the simple test case)
2134 * fixed some bugs revealed by Paul Dietz' test suite:
2135 ** RENAME-PACKAGE allows all package designators as new package
2137 ** constraint propagation and lambda variable substitution are
2138 more cautious in dealing with partially deleted code.
2139 ** compiler sometimes lost reoptimization passes.
2140 ** CERROR, given a condition as condition designator, passes its
2141 remaining arguments to the continue format control without
2143 ** Case-altering FORMAT directives work correctly on non-ASCII
2145 ** The REAL type specifier handles bounds outside the floating
2146 point ranges without signalling FLOATING-POINT-OVERFLOW.
2147 ** Functions with IR1-transformations can create intercomponent
2148 references to global functions.
2149 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2151 ** FORMAT ~R treats a nil value for its first parameter correctly.
2153 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2154 * enhancement: saving cores with foreign code loaded is now
2155 supported on x86/NetBSD and sparc/Linux in addition to the previously
2156 supported platforms.
2157 * bug fix: on some platforms repeated installations caused multiple
2158 copies of HTML documentation to be installed -- should not happen
2159 any more. (reported by Stefan Scholl)
2160 * bug fix: parsing self-recursive alien record types multiple times
2161 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2162 original patch by Helmut Eller for CMUCL)
2163 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2164 (thanks to Richard Kreuter)
2165 * bug fix: defining classes whose accessors are methods on existing
2166 generic functions in other (locked) packages no longer signals
2167 bogus package lock violations. (reported by François-René Rideau)
2168 * bug fix: special variables as DEFMETHOD parameters no longer have
2169 associated bogus type declarations. (reported by David Wragg and
2171 * bug fix: read-write consistency on streams of element-type
2172 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2173 * bug fix: redefiniton of the only method of a generic function with
2174 no DEFGENERIC no longer emits a full WARNING. In addition,
2175 redefinition of generic functions with no DEFGENERIC to an
2176 incompatible lambda list now signals an error. (thanks to Zach
2178 * bug fix: DEFGENERIC now works even when there's a function of the
2179 same name in an enclosing lexical environment. (thanks to Zach
2181 * fixed compiler failure, caused by instrumenting code during
2182 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2183 * optimization: added loop analysis and improved register allocation
2184 * fixed some bugs revealed by Paul Dietz' test suite:
2185 ** POSITION on displaced vectors with non-zero displacement
2186 returns the right answer.
2187 ** (SIMPLE-STRING) is a valid type specifier for sequence
2189 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2191 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2192 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2194 ** The justification version of the FORMAT ~< directive treats
2195 non-zero minpad parameter correctly.
2197 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2198 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2199 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2200 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2201 the supported interface.
2202 * new feature: Single-stepping of code compiled with DEBUG 2 or
2203 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2204 * new feature: saving cores with foreign code loaded is now
2205 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2206 Timothy Moore's work for CMUCL)
2207 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2208 parameters to * instead of NIL if no initform is supplied.
2209 (reported by Johan Bockgaard)
2210 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2211 correctly when FUNCALL appears as the car of the form. Note:
2212 despite this FUNCALL forms are not currently subject to
2213 compiler-macro expansion. (port of Raymond Toy's fix for the
2214 same from CMUCL, reported by Johan Bockgaard)
2215 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2216 (thanks for Teemu Kalvas)
2217 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2218 case instead of terminating the iteration (thanks for Julian
2219 Squires, Sean Champ and Raymond Toy)
2220 * bug fix: incorrect expansion of defgeneric that caused a style
2221 warning. (thanks for Zach Beane)
2222 * bug fix: slot accessor effective method computation works properly
2223 for classes with multiple non-standard applicable methods on
2224 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2225 * on x86 compiler supports stack allocation of results of LIST and
2226 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2227 CMUCL implementation by Gerd Moellmann)
2228 * fixed some bugs revealed by Paul Dietz' test suite:
2229 ** FORMAT strings with both the ~<~:;~> form of the justification
2230 directive and pretty-printing directives cause an error.
2232 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2233 * incompatible change: the internal functions
2234 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2235 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2236 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2237 instead of the old functions.
2238 * new feature: on platforms where "dladdr" is available foreign
2239 function names now appear in backtraces. (based on Helmut Eller's
2241 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2242 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2244 * documentation: ASDF manual is now distributed with SBCL.
2245 * bug fix: SBCL can now load its contributed modules with REQUIRE
2246 even if the system-provided entries have been removed from
2247 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2249 * bug fix: backtraces involving undefined functions or assembly
2250 routines are more informative. (thanks to Brian Downing)
2251 * bug fix: mutually referent alien structures now work correctly.
2252 (reported by Rick Taube)
2253 * bug fix: structures defined by WITH-ALIEN can be referred to
2254 within other definitions in the same WITH-ALIEN.
2255 * bug fix: division operators (MOD, TRUNCATE and the like) with
2256 constant zero divisors and integer dividends no longer generate
2258 * bug fix: provide default methods for INPUT-STREAM-P and
2259 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2260 * bug fix: improve the detection and resolution of MOP metacycles
2261 (where effective method computation depends on the generic function
2262 having its effective method computed). (reported by Bruno Haible)
2263 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2264 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2265 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2266 * bug fix: pathnames with relative directory components can be
2267 represented relative to default pathnames.
2268 * optimization: in taking the GCD of bignums, reduce the two bignums
2269 to approximately the same size (using Euclid's algorithm) before
2270 applying the more sophisticated binary GCD. (thanks to Juho
2272 * optimization: COUNT on bitvectors now operates word-at-a-time.
2273 * optimization: ASH with a positive, but not necessarily constant,
2274 (leftwards) shift, when in a modular context, is compiled to a
2276 * fixed some bugs revealed by Paul Dietz' test suite:
2277 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2278 if the corresponding argument is NIL.
2279 ** FORMAT directives accepting a minpad parameter treat negative
2281 ** literal commas as character parameters to FORMAT directives are
2283 ** literal spaces directly after ~<Newline> directives within a
2284 format-logical-block (~:< ~@:>) do not induce :FILL-style
2285 conditional newlines.
2286 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2287 as specified: it no longer includes conditional newlines).
2288 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2290 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2291 :PER-LINE-PREFIX argument does not evaluate to a string.
2293 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2294 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2295 the manual for details; for now, package locks can be disabled by
2296 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2297 if no major problems are found then it is likely that they will be
2298 compiled in unconditionally.
2299 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2300 unsupported operators on all platforms. To load a shared library
2301 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2302 object file, link it into a shared library outside of SBCL and
2303 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2305 * bug workaround: ROOM T and the GC were not working together
2306 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2307 reporting facility aren't preserved. That reporting has been
2308 disabled, so now until and unless someone figures out how to make it
2309 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2310 * minor incompatible change: as threatened around sbcl-0.8.0, the
2311 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2312 The symbols are also exported from SB-PCL for backwards
2313 compatibility, but more so than before SB-PCL should be treated as
2314 an implementation-internal package.
2315 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2317 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2318 It is known as of this release not to work on the Alpha, however.
2319 * fixed bug #167: errors signalled due to illegal syntax in method
2320 bodies are now more legible.
2321 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2322 designators and can hence be used with TYPEP.
2323 * fixed bug #333: CHECK-TYPE now ensures that the type error
2324 signalled, if any, has the right object to be accessed by
2325 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2326 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2327 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2329 * fixed bug #334: programmatic addition of slots using specialized
2330 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2331 and :ALLOCATION :CLASS slots.
2332 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2333 float exponents. (rereported by Peter Seibel)
2334 * fixed a bug: #\Space (and other whitespace characters) are no
2335 longer considered to be macro characters in standard syntax by
2336 GET-MACRO-CHARACTER.
2337 * fixed bug: initialization of condition class metaobjects no longer
2338 causes an instance of the condition to be created. (reported by
2340 * fixed bug: it is now possible to have slots such that
2341 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2342 description is neither :INSTANCE nor :CLASS.
2343 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2344 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2345 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2346 non-standard SLOT-DEFINITION-ALLOCATION values.
2347 * fixed bugs: various race conditions handling exiting threads.
2348 CL-PPCRE's thread torture test now passes.
2349 * fixed arguably-a-bug: GC time proportional to number of threads in
2350 system even when most of them are idle
2351 * optimization: improved performance of BIT and SBIT on bit-vectors.
2352 * .fasl file incompatibility: The fasl file version number has
2353 been incremented because of changes associated with package locks.
2355 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2356 * minor incompatible change: the system no longer provides
2357 optimization hints (conditions which are TYPEP
2358 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2359 mode; these hints are still emitted when higher SPEED optimization
2361 * new contrib module: a sampling profiler (profiling by statistical
2362 sampling, rather than by instrumenting functions) is available as
2363 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2364 * the behaviour of the standard function ED is now customizeable by
2365 third parties through a hook variable: see ED's documentation
2366 string for information on the protocol.
2367 * the compiler no longer emits efficiency notes for (FUNCALL X)
2368 when the type of X is uncertain under default optimization
2370 * fixed bug 276: mutating a binding of a specialized parameter to a
2371 method to something that is not TYPEP the specializer is now
2373 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2374 exhibit the required behaviour on the x86 platform. (thanks to
2375 Peter van Eynde, Eric Marsden and Bruno Haible)
2376 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2377 even for difficult arguments. (reported by Peter Graves)
2378 * fixed bug 141a: the backquote printer now descends quoted
2380 * fixed another bug in backquote printing: no more destructive
2381 modification of the form's list structure. (reported by Brian
2383 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2384 move between its address being taken and the call to
2385 interrupt_thread, fixing a crashing race condition.
2386 * the SB-POSIX contrib implementation has been adjusted so that it
2387 no longer exhibits ridiculously poor performance when constructing
2388 instances corresponding to C structs.
2390 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2391 * minor incompatible change: the sb-grovel contrib now treats C
2392 structures as alien (in the sense of SB-ALIEN) objects rather than
2393 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2394 has implications for memory management of client code
2395 (sb-grovel-returned objects must now be manually managed) and for
2396 type safety (alien objects now have full types).
2397 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2398 used to control emission of compiler diagnostics, rather than the
2399 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2400 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2401 quality should be considered deprecated.
2402 * install.sh now installs the user manual as well
2403 * (not quite a new documentable feature, but worth considering in
2404 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2405 beginnings of a semantically meaningful condition hierarchy is
2406 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2408 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2409 designator as the defaults argument.
2410 * fixed bug: Displaced arrays whose displaced-to array has become
2411 too small now cause ARRAY-DIMENSION to signal an error, providing
2412 for safer bounds-checking. (reported by Bruno Haible)
2413 * fixed bug: DEFCLASS slot definitions with identical :READER and
2414 :WRITER names now signal a reasonable error. (reported by Thomas
2416 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2418 * fixed bug: Invalid slot specification errors now print correctly.
2419 (thanks to Zach Beane)
2420 * fixed bug 320: Shared to local slot value transfers in class
2421 redefinitions now happen corrently from superclasses as
2422 well. (reported by Bruno Haible)
2423 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2425 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2426 improper lists correctly. (reported by Bruno Haible)
2427 * fixed bug 313: source-transform for <fun-name> was erroneously
2428 applied to a call of a value of a variable with name <fun-name>.
2429 (reported by Antonio Menezes Leitao)
2430 * fixed bug 307: The obsolete instance protocol ensures that
2431 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2432 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2433 remove dead unknown-values globs from the middle of the stack.
2434 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2435 easier to resume long computations after using *BREAK-ON-SIGNALS*
2436 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2437 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2438 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2439 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2440 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2441 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2443 * fixed a (fairly theoretical) bug in string printing: if
2444 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2445 does not have array-element-type equal to the most general string
2447 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2448 function name. (thanks to Nikodemus Siivola)
2449 * fixed bug: compile-time format string checker failed on
2450 non-closed ~{. (reported by Thomas F Burdick)
2451 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2452 don't warn on legal loop code involving more than one aggregate
2453 boolean. (thanks to Nikodemus Siivola)
2454 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2455 in keyword position to MAKE-PACKAGE was not being reported as
2457 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2458 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2460 * fixed bugs 280 and 312: the checking for multiple definitions in a
2461 file is less likely to become confused by uses of inline
2463 * fixed bug: the #S reader macro performs the keyword coercion
2464 specified for slot names. (reported by Kalle Niemitalo)
2465 * fixed bug: lambda lists may contain symbols whose names start with
2466 & but are not lambda-list-keywords; their occurrence triggers a
2468 * fixed bug 321: define-method-combination argument lambda lists do
2469 not cause invalid code to be generated when &optional or &aux
2470 variables have default values. (reported by Bruno Haible)
2471 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2472 have CLOS classes; this appears also to have fixed reported
2473 instability in stack exhaustion detection.
2474 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2475 MUFFLE-WARNING when no associated restart is present is now
2477 * optimization: rearranged the expansion of various defining macros
2478 so that each expands into only one top-level form in a
2479 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2481 * optimization: used a previously little-used slot in symbols to
2482 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2484 * fixed some bugs revealed by Paul Dietz' test suite:
2485 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2487 ** Fixed an optimization bug related to inheritance of initforms
2488 from local to shared slots.
2489 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2490 ** CAST optimizer forgot to flush argument derived type.
2491 ** print/read consistency on floats is now orders of magnitude
2492 more likely. (thanks also to Bruno Haible for a similar report
2494 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2495 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2496 for objects of type REAL. Make it so.
2497 ** SXHASH is specified (infelicitously) to respect similarity,
2498 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2499 it so. (thanks to Markus Ziegler)
2500 ** on the Alpha, the compiler succeeds in compiling functions
2501 returning a known number of arguments greater than 63.
2502 ** fixed handling of invalid NIL arguments in keyword position
2504 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2506 ** provided a readably-printable representation for RANDOM-STATE
2508 ** ensured that pathnames, where they have a namestring, always
2509 print using #P"..." syntax.
2511 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2512 * Support for the forthcoming 2.0 version of the NetBSD kernel
2513 running on x86 hardware has been added. (thanks to Perry
2514 E. Metzger most immediately, and others for their past work)
2515 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2516 current release version; SBCL's OpenBSD support had been broken
2517 since about the time of OpenBSD's switch to ELF binary format.)
2518 * [placeholder for DX summary]
2519 ** user code with &REST lists declared dynamic-extent, under high
2520 speed or space and low safety and debug optimization policy.
2521 * The manual has been converted to Texinfo format and the debugger
2522 chapter from the cmucl manual has been added.
2523 * A facility has been added to extract documentation strings from
2524 sbcl and store them as Texinfo-formatted snippets for inclusion in
2525 the manual (via Texinfo's @include directive)
2526 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2527 the test case to Dave Roberts)
2528 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2529 pointers. (reported by Sean Ross)
2530 * bug fix: PROFILE output is printed nicely even for large numerical
2531 values. (thanks to Zach Beane)
2532 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2533 greater than 32 handle EOF correctly.
2534 * bug fix: on X86 an immediate argument of the IMUL instruction is
2535 correctly printed in disassembly. (thanks to Lutz Euler)
2536 * bug fix: class slots in redefined classes preserve their old
2537 values. (thanks to Bruno Haible and Nikodemus Siivola)
2538 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2539 succeeds. (reported by Marco Baringer)
2540 * fixed some bugs revealed by Paul Dietz' test suite:
2541 ** READ-SEQUENCE now works on ECHO-STREAMs.
2542 ** RATIONALIZE works more according to its specification. (thanks
2545 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2546 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2547 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2548 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2549 should matter to you only if you rebind the printer control
2550 variables and then find you want different bindings in the
2551 debugger than in the ordinary execution of your program.)
2552 * The runtime build system has been tweaked to support building
2553 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2554 assembler and linker. (thanks to Nikodemus Siivola)
2555 * Unbound, undefined, undeclared variables now trigger full
2556 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2557 more often programmer error than deliberate exploitation of undefined
2559 * optimization: the hash algorithm for strings has changed to one
2560 that is less vulnerable to spurious collisions. (thanks to Juho
2562 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2563 needless bounds checking. (thanks to Juho Snellman)
2564 * optimization: implemented multiplication as a modular
2565 (UNSIGNED-BYTE 32) operation on the PPC backend.
2566 * fixed some bugs revealed by Paul Dietz' test suite:
2567 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2569 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2570 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2571 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2573 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2575 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2577 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2578 their output stream on EOF from read.
2579 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2580 have been read to end-of-file.
2581 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2583 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2584 description of determination of which consecutive characters
2586 ** Printing the "Space" character with escaping on now yields "#\\ ",
2587 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2588 ** Reading floating-point numbers with *READ-BASE* set to a number
2589 less than 10 works correctly.
2590 ** Reading floating-point numbers with *READ-BASE* set to a number
2591 more than 10 works correctly.
2592 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2593 the readtable currently in effect.
2595 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2596 * minor incompatible change: parsing of namestrings on a physical
2597 (Unix) host has changed; numbers after the final #\. in a
2598 namestring are no longer interpreted as a version field. This is
2599 intented to be largely invisible to the user, except that the
2600 meaning of the namestring "*.*.*" has changed: it now refers to a
2601 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2602 should usually be replaced by
2603 (make-pathname :name :wild :type :wild :version :wild)
2604 with the added benefit that this is more likely to be portable.
2605 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2606 option to OPEN now signals an error if the file being opened
2607 exists; this may have an impact on existing code.
2608 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2609 signals received, on the PowerPC platforms (both Linux and
2610 Darwin). (thanks to Pierre Mai for pointing out the location of
2612 * several fixes on OS X: The system now builds and runs cleanly on
2613 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2614 (thanks to Brian Mastenbrook)
2615 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2616 second-resolution: integer multiples of 1/3600 between -24 and 24.
2617 (thanks to Vincent Arkesteijn)
2618 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2619 type when called with 1 argument; PEEK-CHAR checked type of
2620 PEEK-TYPE only after having read first character from a
2621 stream. (reported by Peter Graves)
2622 * bug fix: the garbage collector now has much better locality
2623 behaviour, and in particular no longer treats all memory as being
2624 exhausted when many small objects point to each other in a deeply
2626 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2627 recognized as being TYPEP their class.
2628 * bug fix: the PUSHNEW documentation string has been corrected.
2629 (thanks to Vincent Arkesteijn)
2630 * bug fix: defaulting of the value for the last of an atypically
2631 large number of multiple values being bound was not being
2632 performed correctly on the Alpha or PPC platforms
2633 * optimization: implemented multiplication as a modular
2634 (UNSIGNED-BYTE 32) operation on the x86 backend.
2635 * optimization: SEARCH on simple-base-strings can now be open-coded.
2636 (see also contrib/compiler-extras.lisp for inspiration for
2637 teaching the compiler about the Boyer-Moore algorithm).
2638 * value, returned by MAX (and MIN) called with several EQUALP, but
2639 not EQL, arguments now does not depend on compiler settings.
2640 * fixed some bugs revealed by Paul Dietz' test suite:
2641 ** in stack analysis liveness information is propagated from
2642 non-local entry points.
2643 ** pathwise CAST removing failed when the CAST node did not start
2645 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2646 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2648 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2649 host is already defined.
2650 ** RENAME-FILE works on streams instead of signalling an internal
2652 ** PEEK-CHAR uses the current readtable when determining whether
2653 or not a character is whitespace.
2654 ** MERGE-PATHNAMES handles the case when the pathname does not
2655 specify a name while the default-pathname specifies a version.
2656 ** Pathnames now stand a better chance of respecting print/read
2658 ** Attempting to use standardized file system operators with a
2659 pathname with invalid :DIRECTORY components signals a
2661 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2663 ** DIRECTORY on logical pathnames is more correct.
2664 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2665 signal a TYPE-ERROR if their argument is not a stream.
2666 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2667 designator argument does not designate a stream.
2668 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2669 examining the synonym.
2670 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2672 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2673 element-type larger than ([UN]SIGNED-BYTE 32).
2675 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2676 * When built with the :SB-FUTEX feature, threaded builds now take
2677 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2678 for faster/more reliable mutex and condition variable support.
2679 * Incompatible change (but one you probably shouldn't have been using
2680 anyway): the interface and code for arbitrating between multiple
2681 threads in the same user session has been redesigned.
2682 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2683 error when called without an explicit environment argument.
2684 (thanks to Nikodemus Siivola)
2685 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2686 confused about their position. (thanks to Adam Warner and Gerd
2688 * bug fix: Pretty printing backquoted forms with unquotations in the
2689 argument list position of various code constructs such as LAMBDA
2690 now works correctly. (reported by Paul Dietz)
2691 * bug fix: Pretty printing unquotations no longer loses all
2692 stream position information.
2693 * optimization: performance of string output streams is now less
2694 poor for multiple small sequence writes.
2695 * optimization: performance of CSUBTYPEP in the presence of complex
2696 expressions involving CONS and NOT many times has been improved.
2697 (reported by Paul Dietz)
2698 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2700 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2701 streams for the REPL, for the debugger, and so on. (thanks to
2703 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2704 * fixed some bugs revealed by Paul Dietz' test suite:
2705 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2706 is ignored if it is too small, rather than propagating through
2707 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2708 ** extremely complex negations of CONS types were not being
2709 sufficiently canonicalized, leading to inconsistencies in
2711 ** VALUES tranformer lost derived type.
2713 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2714 * fixed a bootstrapping bug: the build process no longer assumes
2715 that the various BOOLE-related constants have the same value in
2716 host and target lisps. (noted by Paul Dietz' test suite on an
2717 SBCL binary built from CLISP)
2718 * The system can now be dynamically linked on the MIPS platform,
2719 which enables dynamic loading of foreign code from Lisp. (thanks
2720 to Ralf Baechle for discussions on the MIPS ABI)
2721 * The system now records debugging information for its own source
2722 files in a filesystem-position-independent manner, relative to
2723 the "SYS" logical host.
2724 * fixed a compiler bug: MV-LET convertion did not check references
2725 to the "max args" entry point. (reported by Brian Downing)
2726 * tweaked disassembly notes to be less confident about proclaiming
2727 some instruction as an LRA. (thanks to Brian Downing)
2728 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2729 now each have their own history, command character, and other
2730 characteristics. (thanks to David Lichteblau)
2731 * fixed some bugs revealed by Paul Dietz' test suite:
2732 ** compiler failure in compiling LOGAND expressions including a
2734 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2735 shift greater than 32.
2736 ** FLUSH-DEST did not mark blocks for type check regeneration.
2737 ** HANDLER-CASE failed to accept declarations in handler clauses
2738 in some circumstances.
2740 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2741 * New code in contrib/sb-introspect (still probably not entirely
2742 stable yet) provides some support for smart Lisp development
2743 environments like SLIME.
2744 * The conditions signalled for errors occurring when loading .fasl
2745 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2746 in a way which should help ASDF recover gracefully.
2747 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2748 stuff has been cleaned up. If you code contrib/ stuff, this might
2749 affect you, and you can look at contrib/README, contrib/STANDARDS,
2750 and/or the 0.8.4.27 diff to check.
2751 * In full calls the compiler now does not generate checks for declared
2752 argument types for all arguments.
2753 * various threading fixes
2754 ** and some experimental patches which didn't make it into
2755 the main tree for this release, but which are shipped in
2756 contrib/experimental-thread.patch as a possible fix for some
2757 failures (deadlock, spinning...) in GC-intensive multithreaded
2759 * fixed PPC build problem (source code incompatibility of different
2760 library versions): added offsetof() hackery which attempts to divine
2761 where glibc maintainers put uc_mcontext today
2762 * fixed bug 282: compiler does not trust type assertions while passing
2763 arguments to a full call.
2764 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2765 &OPTIONAL VALUES type parameter.
2766 * fix bug 214: algorithm for noting rejected templates is now more
2767 similar to that of template seletion. (also reported by rydis on
2769 * fixed bug 141b: printing backquoted information readably and prettily
2770 inserts a space where necessary.
2771 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2772 (CHARACTER 10) are now reported as errors, rather than propagated
2773 as unknown types. (reported by piso on #lisp)
2774 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2775 with values NIL and :ERROR. (thanks to Milan Zamazal)
2776 * fixed bug 191c: CLOS now does proper keyword argument checking as
2777 described in CLHS 7.6.5 and 7.6.5.1.
2778 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2779 longer raise an error; further, using a list as a for-as-arithmetic
2780 counter now raises a meaningful error.
2781 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2782 now understood by sequence creation functions such as MAKE-SEQUENCE
2784 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2785 a STRING-INPUT-STREAM.
2786 * compiler enhancement: SIGNUM is now better able to derive the type
2788 * type declarations inside WITH-SLOTS are checked. (reported by
2790 * fixed some bugs revealed by Paul Dietz' test suite:
2791 ** incorrect optimization of TRUNCATE for a positive first
2792 argument and negative second.
2793 ** compiler failure in let-convertion during flushing dead code.
2794 ** compiler failure while deriving type of TRUNCATE on an
2795 interval, containing 0.
2796 ** ASH of a negative bignum by a negative bignum count now returns
2798 ** intersection of CONS types now canonicalizes properly, fixing
2799 inconsistencies in SUBTYPEP.
2801 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2802 * incompatible change: The --disable-debugger command line
2803 option now clobbers the debugger at a more fundamental
2804 level, by redefining #'INVOKE-DEBUGGER instead of by
2805 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2806 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2807 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2808 enter the debugger REPL and then suffer recursive errors
2809 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2810 while under the new system, BREAK in --disable-debugger mode
2811 terminates the system just as an unhandled error would.
2812 * fixed compiler performance when processing loops with a step >1;
2813 * bug fix: DOCUMENTATION now retrieves generic function
2814 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2815 support has been systematized, and now supports the methods
2816 specified by ANSI, along with a default method and a method for
2817 slot documentation. (reported by Nathan Froyd)
2818 * bug fix: effective methods associated with a generic function are
2819 no longer cached over a change of that generic function's method
2820 combination. (reported by Andreas Fuchs)
2821 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2822 names a non-existent directory. (thanks to Andreas Fuchs)
2823 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2824 the PPC platform, lead to stack corruption; this has been fixed.
2825 (reported by Rainer Joswig)
2826 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2827 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2828 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2829 arithmetic in general, is now much more reliable on the PPC
2831 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2832 platform now returns the right answer.
2833 * optimization: restored some effective method precomputation in
2834 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2835 precomputation is now tunable.
2836 * optimization: compiler-internal data structure use has been
2837 reviewed, and changes have been made that should improve the
2838 performance of the compiler by about 20%.
2839 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2840 simple-base-strings and simple-bit-vectors is improved.
2841 * optimization: the optimization of 32-bit logical and arithmetic
2842 functions introduced in version 0.8.3 on the x86 has been
2843 implemented on the mips, ppc and sparc platforms; an
2844 implementation of the same facility, but for 64-bit arithmetic,
2845 has been added for the alpha.
2846 * microoptimization: the compiler is better able to make use of the
2847 x86 LEA instruction for multiplication by constants.
2848 * bug fix: in some situations compiler did not report usage of
2849 generic arithmetic in (SPEED 3) policy.
2850 * bug 145b fix: compiler used wrong type specifier while converting
2851 MEMBER-types to numeric.
2852 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2854 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2855 index argument now works properly on the Alpha platform.
2856 * bug fix: floating point exception treatment on the Alpha platform
2858 * bug fix: FILE-POSITION works much better on string input and
2859 output streams. (thanks to Nikodemus Siivola)
2860 * bug fix: many threading/garbage collection symptoms sorted.
2861 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2862 might be pseudo-atomic.
2863 * internal change: Stopping for GC is now done with signals not
2864 ptrace. GC is now done in whichever thread wanted it, instead of
2866 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2868 * bug fix: result form in DO is not contained in the implicit
2870 * incompatible change: ICR structure is changed; the value part of
2871 CONTINUATION is now called LVAR; corresponding functions are
2872 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2873 * added type deriver for ISQRT (thanks to Robert E. Brown).
2874 * bug fix: better support for loading from the command line when an
2875 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2877 * fixed some bugs revealed by Paul Dietz' test suite:
2878 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2879 ** ROUND and FROUND now give the right answer when given very
2880 small float arguments.
2881 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2883 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2884 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2885 ** LCM should return a non-negative integer.
2886 ** PARSE-INTEGER returned the index of a terminator instead of the
2887 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2888 ** PARSE-INTEGER returned an incorrect index being applied to a
2890 ** LCM with two arguments of 0 returns 0 rather than signalling
2892 ** unsigned addition of a 32-bit constant with the high bit set no
2893 longer causes an internal compiler error on the x86.
2894 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2895 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2896 with negative last argument.
2897 ** byte specifiers with zero size and position no longer cause
2898 an error during type derivation.
2899 ** bignum multiplication on the Alpha platform now returns the
2901 * porting: The system now builds on SuSE AMD64, although it still
2902 generates a 32-bit binary.
2903 * .fasl file incompatibility: The fasl file version number has
2904 been incremented (because of the changes to internal compiler
2905 data structures referred to above).
2907 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2908 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2909 more accurately, on the Darwin kernel running on PowerPC hardware.
2910 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2911 * Compiler code deletion notes now signal a condition of type
2912 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2913 an associated MUFFLE-WARNING restart.
2914 * The compiler now performs limited argument count validation of
2915 constant format strings in FORMAT, and where appropriate in ERROR,
2916 CERROR and WARN. (thanks to Gerd Moellmann)
2917 * New ASDF-INSTALL contrib can be used for automatic download and
2918 installation of third-party Lisp code from CCLAN or other sites
2920 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2921 which forces another thread to execute a function supplied by the
2923 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2924 now accept and act upon their :ELEMENT-TYPE keyword argument.
2925 (reported by Martin Atzmueller, Edi Weitz)
2926 * bug fix: FILE-POSITION now accepts position designators up to
2927 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2928 is the greater. (thanks to Patrik Nordebo)
2929 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2930 Kalle Olavi Niemitalo)
2931 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2932 printable. (reported by Eric Marsden)
2933 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2934 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2935 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2936 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2937 (thanks to Stig Sandoe)
2938 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2939 UNREAD-CHAR now correctly includes the unread character in the
2940 target sequence. (thanks to Gerd Moellmann)
2941 * bug fix in threaded builds: the system can now be suspended and
2942 resumed by shell job control with minimal disruption.
2943 * bug fixes in times and timezones >2038AD
2944 * better handling of "where is GNU make?" problem in build scripts
2945 (thanks to Nikodemus Siivola)
2946 * new optimization: inside a named function any reference to a
2947 function with the same name is considered to be a self-reference;
2948 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2949 optimization quality.
2950 * new optimization on x86: logical functions and + now have
2951 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2952 used when the result is truncated to 32 bits.
2953 * VALUES declaration is partially enabled.
2954 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2955 * fixed some bugs revealed by Paul Dietz' test suite:
2956 ** The system now obeys the constraint imposed by
2957 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2958 types form a lattice under type intersection.
2959 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2960 ** ASSOC now ignores NIL elements in an alist.
2961 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2962 and (1+ MOST-POSITIVE-FIXNUM) answers.
2963 ** The addition of a method with invalid qualifiers to a generic
2964 function does not cause an error to be signalled immediately;
2965 a warning is signalled, and the error is generated only on
2966 calling the generic function.
2967 * changed .fasl file version number, in part to add type codes for
2968 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2969 obscure ANSI requirements
2971 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2972 * fixed bug 148: failure to inline-expand a local function left
2973 garbage, confusing the compiler.
2974 * fixed bugs 3cd: structure slot readers perform type check if the
2975 slot can have an invalid value (i.e. it is either not initialized
2976 or can be written with a less specific slot writer).
2977 * bug fix: the compiler now traps array references to elements off
2978 the end of an array; previously, the bounds checking in some
2979 circumstances could go off-by-one.
2980 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2982 * type declarations for array element types now obey the description
2983 on the CLHS page "Declaration TYPE", as per discussions on
2984 sbcl-help around 2003-05-08. This means that a declaration
2985 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2986 declaration, all references to BAR will be asserted or assumed
2987 (with THE, so dependent on compiler policy) to involve objects of
2988 type FOO. Note that no such declaration is implied in
2989 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2990 * declared types of functions from the "Conditions"
2991 chapter. (reported by Paul Dietz)
2992 * bug fix: CERROR accepts a function as its first argument.
2993 * bug fix: NTH an NTHCDR accept a bignum as index
2994 arguments. (reported by Adam Warner)
2995 * optimization: character compare routines now optimize comparing
2996 against a constant character. (reported by Gilbert Baumann)
2997 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2998 argument now works properly on the MIPS platform.
2999 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3000 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3001 declared to have a functional type, does not cause an error
3003 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3004 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3005 * fixed bug: if last continuation of a deleted block has a
3006 destination, this destination should be deleted too. (reported by
3008 * fixed a bug in the bootstrap process: the host compiler's values
3009 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3010 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3011 test case from Patrik Nordebo)
3012 * improved the ability of the disassembler on the PPC platform to
3013 provide helpful disassembly notes.
3014 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3015 the class in more cases than previously.
3016 * bug fix: FILE-POSITION now understands :START and :END for
3017 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3018 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3019 8) data. (thanks to David Lichteblau)
3020 * bug fix: it is possible to add a method to a generic function
3021 without lambda list.
3022 * bug fix: reader failed to signal END-OF-FILE inside an
3023 object representation. (reported by Nikodemus Siivola)
3024 * fixed some bugs revealed by Paul Dietz' test suite:
3025 ** LAST and [N]BUTLAST should accept a bignum.
3026 ** condition slot accessors are methods.
3027 ** (VECTOR NIL) is a subtype of STRING.
3029 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3030 * minor incompatible change: some nonsensical specialized lambda
3031 lists (used in DEFMETHOD) which were previously ignored now signal
3033 * minor incompatible change: the system is now aware of the types of
3034 variables in the COMMON-LISP package, and will signal errors for
3035 most violations of these type constraints (where previously they
3036 were silently accepted).
3037 * minor incompatible change: COMPILE-FILE now uses the freedom
3038 afforded (ANSI 3.2.2.3) to use derived function types for
3039 functions defined in the same file. This also permits the system
3040 to warn on static type mismatches and function
3041 redefinition. (Currently it does not work with high DEBUG level.)
3042 * minor incompatible change: VALUES declaration is disabled.
3043 * When issuing notes, the compiler now signals a condition of type
3044 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3045 restart for use in user handlers. It is expected that the
3046 COMPILER-NOTE condition will eventually become a condition
3047 supertype to a hierarchy of note types, which will then be
3048 handleable in a similar fashion. However, at the moment, no such
3049 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3050 but it's an implementation detail, not a classification for the
3052 * Changes in type checking closed the following bugs:
3053 ** type checking of unused values (192b, 194d, 203);
3054 ** template selection based on unsafe type assertions (192c, 236);
3055 ** type checking in branches (194bc).
3056 * A short form of VALUES type specifier has ANSI meaning (it has
3057 increased the number of situations when SBCL cannot perform type
3059 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3060 keywords or constants is permissible.
3061 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3062 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3063 classes. (thanks to Antonio Martinez)
3064 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3065 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3066 argument to a pretty-print stream. Instead, it leaves any such
3067 operations to DESCRIBE-OBJECT methods.
3068 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3070 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3071 lambda lists. (thanks to David Lichteblau)
3072 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3073 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3074 (thanks to Gerd Moellmann)
3075 * fixed bug 246: increased compilation speed of long
3076 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3078 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3080 * DEFCONSTANT now throws a condition of type
3081 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3082 constant to a non-EQL value; CONTINUE and ABORT restarts
3083 respectively change and preserve the value.
3084 * fixed bug 63: The code walker, part of the implementation of CLOS,
3085 is now better at handling symbol macros.
3086 * bug fix: There is no longer an internal implementation type named
3087 CL:LENGTH. (reported by Raymond Toy)
3088 * bug fix: In macro-like defining macros/special operators the
3089 implicit block does not enclose the lambda list.
3090 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3091 enclosed in parentheses) are not suitable as type specifiers, and
3092 their use properly signals an error now.
3093 * bug fix: An argument count mismatch for a type specifier in code
3094 being compiled no longer causes an unhandled error at compile
3095 time, but signals a compile-time warning.
3096 * fixed simple vector readable printing
3097 * bug fix: DESCRIBE takes more care over whether the class
3098 precedence list slot of a class is bound before accessing it.
3099 (reported by Markus Krummenacker)
3100 * bug fix: FORMATTER can successfully compile pretty-printer format
3101 strings which use variants of the ~* directive inside.
3102 * bug fix: SEARCH now applies its TEST predicate to the elements of
3103 the arguments in the correct order. (thanks to Wolfhard Buss)
3104 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3105 in type inference. (thanks to Robert E. Brown)
3106 * bug fix: Reading in symbols with an explicit package name of ""
3107 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3108 * fixed some bugs revealed by Paul Dietz' test suite:
3109 ** NIL is now allowed as a structure slot name.
3110 ** Arbitrary numbers, not just REALs, are allowed in certain
3111 circumstances in LOOP for-as-arithmetic clauses.
3112 ** Multiple class redefinitions before slot access no longer
3113 causes a type error.
3114 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3115 association between the name and a class.
3116 ** Generic functions with non-standard method-combination and over
3117 five methods all of which return constants no longer return NIL
3118 after the first few invocations. (thanks to Gerd Moellmann)
3119 ** CALL-NEXT-METHOD with no arguments now passes the original
3120 values of the arguments, even in the presence of assignment.
3121 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3123 ** DISASSEMBLE works with closures and funcallable instances.
3124 ** ADD-METHOD now returns the generic function, not the new method.
3125 ** FIND-METHOD signals an error if the lengths of the specializers
3126 is incompatible with the generic function, even if the ERRORP
3128 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3129 which its argument is a member.
3130 ** DEFCLASS only redefines the class named by its class-name
3131 argument if that name is the proper name of the class;
3132 otherwise, it creates a new class.
3133 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3134 of the UNBOUND-SLOT condition to the name of the slot.
3135 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3136 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3137 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3138 SLOT-MAKUNBOUND in the specified fashion.
3140 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3141 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3142 cross-compilation host. As a consequence, we can now bootstrap our
3143 way up to SBCL starting with a bare gcc toolchain and human-readable
3144 source code (first the source to CLISP, then the source to SBCL).
3145 * A contributed module containing a partial implementation of the
3146 simple-streams interface has been included. (thanks to Rudi
3148 * A contributed module implementing the RFC1321 Message Digest
3149 Algorithm, known as MD5, has been included.
3150 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3151 no longer has any effect, as the code controlled by this feature
3152 has been deleted. (As far as we know, no-one has ever built using
3153 this feature, and its semantics were confused in any case).
3154 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3155 work on conditions (as required by the ANSI specification),
3156 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3157 expected behaviour on conditions. Users should note, however,
3158 that such behaviour is not required by the ANSI specification,
3159 and so use of this behaviour may render their code unportable.
3160 * fixed some bugs revealed by Paul Dietz' test suite:
3161 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3163 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3164 ** SXHASH on condition objects no longer returns NIL.
3165 ** :ALLOCATION :CLASS slots are better treated; their values are
3166 updated on class redefinition, and initforms inherited from
3167 superclasses are applied.
3168 ** REMOVE-METHOD returns its generic function argument even when
3169 no method was removed.
3170 ** SHARED-INITIALIZE now initializes the values of the requested
3171 slots, including those with :ALLOCATION :CLASS.
3172 ** ALLOCATE-INSTANCE now works on structure classes defined via
3173 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3175 ** SLOT-EXISTS-P now works on conditions, as well as structures
3177 ** MAKE-LOAD-FORM now has the required methods on
3178 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3179 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3180 keyword, and now implements the SLOT-NAMES argument.
3181 ** methods with &OPTIONAL arguments no longer allow too many
3182 arguments to be passed in the call without error.
3183 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3184 option is consistent with the required arguments of the generic
3185 function lambda list.
3186 * bug fix: REQUIRE accepts a string designator. (Thanks to
3188 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3189 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3190 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3191 * bug fix: The compiler now checks for duplicated variables in macro
3193 * bug fix: SETQ on globals returns the correct value.
3194 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3195 not a COMPILER-ERROR (followed by some other strange error on
3196 choosing the CONTINUE restart).
3197 * bug fix: make.sh and friends are now more consistent in the way that
3198 they look for GNU "make".
3200 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3201 * experimental native threads support (on x86 Linux >=2.4 only).
3202 This is not compiled in by default: you need to add :SB-THREAD to
3203 the target features. See the "Beyond ANSI" chapter of the manual
3205 * fix for longstanding nonANSIism: The old distinction between
3206 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3207 The return value from CL:FIND-CLASS is now a CLOS class, and
3208 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3209 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3210 * An interface to the MetaObject Protocol, as described in Kiczales,
3211 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3212 MIT Press, 1991, is available from the SB-MOP package.
3213 * incompatible change: the SB-PCL package should now be considered
3214 a private implementation detail, and no longer a semi-private MOP
3216 * minor incompatible change: due to rearrangement for threads, the
3217 control stack and binding stack are now allocated at arbitrary
3218 addresses instead of being hardcoded per-port. Users affected by
3219 this probably have to be doing advanced things with shared
3220 libraries, and will know who they are.
3221 * minor incompatible change: Previously, all --eval forms used were
3222 processed with READ before any of them were processed with EVAL.
3223 Now each --eval form is processed with both READ and EVAL before
3224 the next --eval form is processed. (Thus package operations like
3225 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3226 work as the user might reasonably expect.)
3227 * minor incompatible change: *STANDARD-INPUT* is now only an
3228 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3230 * minor incompatible change: Y-OR-N-P is now character-oriented,
3231 not line oriented. Also, YES-OR-NO-P now works without errors.
3232 (thanks to Antonio Martinez)
3233 * sb-aclrepl module improvements: an integrated inspector, added
3234 repl features, and a bug fix to :trace command.
3235 * Known functions, which cannot be open coded by the backend, are
3236 considered to be able to check types of their arguments. (fixing
3237 a bug report by Nathan J. Froyd)
3238 * fixed a bug in computing method discriminating functions: It is
3239 now possible to define methods specialized on classes which have
3240 forward-referenced superclasses. (thanks to Gerd Moellmann)
3241 * fixed evaluation order in optional entries (reported by Gilbert
3243 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3244 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3245 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3246 required-by-AMOP NAME argument, as well as CLASS and
3247 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3248 * fixed bug 20: DEFMETHOD can define methods using names that are
3249 not the proper names of classes to designate class specializers.
3250 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3251 Unix file descriptors, instead of blowing up. (thanks to Antonio
3253 * Garbage collection refactoring: user-visible change is that a
3254 call to the GC function during WITHOUT-GCING will not do garbage
3255 collection until the end of the WITHOUT-GCING. If you were doing
3256 this you were probably losing anyway.
3257 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3258 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3259 TYPEP the latter but not the former.
3260 * The compiler issues a full WARNING for calls to undefined functions
3261 with names from the CL package.
3262 * MAP-INTO for a vector destination is open coded. (reported by
3263 Brian Downing on c.l.l)
3264 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3265 documentation string.
3266 * fixed some bugs revealed by Paul Dietz' test suite:
3267 ** COPY-ALIST now signals an error if its argument is a dotted
3269 ** Condition slots are now accessed more correctly in the presence
3270 of multiple initargs for a given slot.
3271 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3272 exclude restarts of the same name associated with a different
3274 ** DEFCLASS of forward-referenced classes with another
3275 forward-referenced class in the superclasses list no longer
3277 ** Condition slots are now initialized once each, not multiple
3278 times. (thanks to Gerd Moellmann)
3279 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3281 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3282 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3283 arguments contain duplicated elements.
3284 ** RESTART-CASE understands local macros.
3285 ** RESTART-CASE associates exactly its own restarts with a condition.
3286 ** ENDP in safe mode checks its argument to be of type LIST.
3287 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3288 in question is unbound.
3289 ** Optimized MAKE-INSTANCE functions no longer cause internal
3290 assertion failures in the presence of duplicate initargs.
3291 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3292 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3293 propagated even in the ctor optimized implementation of
3295 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3297 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3298 * a better implementation of SXHASH on (simple) bit vectors,
3299 measured both in execution speed and in distribution of results
3300 over the positive fixnums, has been installed. Likewise, a better
3301 implementation of EQUAL for simple bit vectors is now available.
3302 * fixed CEILING optimization for a divisor of form 2^k.
3303 * fixed bug 240 (emitting extra style warnings "using the lexical
3304 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3305 by Antonio Martinez)
3306 * fixed SXHASH, giving different results for NIL depending on type
3307 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3308 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3309 variable. (found by Rolf Wester)
3310 * SBCL does not ignore type declarations for special
3311 variables. (reported by rif on c.l.l 2003-03-05)
3312 * some bug fixes in contrib/sb-aclrepl/
3313 * fixed some bugs revealed by Paul Dietz' test suite:
3314 ** a bug in the CONS type specifier, whereby the CAR and CDR
3315 types got intertwined, has been fixed;
3316 ** the type system is now able to reason about the interaction
3317 between INTEGER and RATIO types more completely;
3318 ** APPEND, [N]REVERSE and NRECONC check that those their
3319 arguments, which must be proper lists, are really so;
3320 ** An array specialized to be unable to hold elements has been
3321 implemented, as required -- yes, really -- by ANSI;
3322 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3323 on malformed property lists;
3325 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3326 * incompatible packaging change: in line with Unix convention,
3327 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3328 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3329 * REQUIRE and PROVIDE are now optionally capable of doing something
3330 useful. See the documentation string for REQUIRE.
3331 * infrastructure for a managed SBCL contrib system: contributed
3332 modules in this release include:
3333 ** the ASDF system definition facility;
3334 ** an interface to the BSD Sockets API;
3335 ** an ACL-like convenience interface to the repl;
3336 (thanks to Kevin Rosenberg)
3337 ** an implementation of ROTATE-BYTE, with efficient implementation
3339 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3340 gives a closer approximation to the right answer than previously.
3341 (thanks to Raymond Toy)
3342 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3343 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3344 optional environment arguments, as required by ANSI.
3345 * fixed bugs in other functions taking environment objects, allowing
3346 calls with an explicit NIL environment argument to be compiled
3348 * fixed bug 228: primary return values from
3349 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3350 COMPILE or FUNCTION.
3351 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3352 :TYPE will no longer signal errors on innocuous objects.
3353 * fixed bug 231b: SETQ is better at respecting type declarations in
3354 the lexical environment.
3355 * fixed a bug in DEFCLASS: classes named by symbols with no or
3356 unprintable packages can now be defined.
3357 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3358 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3359 * fixed compiler failure related to checking types of functions.
3360 (reported by Robert E. Brown)
3361 * the compiler is now much more consistent in its error-checking
3362 treatment of bounding index arguments to sequence functions: in
3363 (SAFETY 3) code, errors will be signalled in almost all cases if
3364 invalid sequence bounding indices are passed to functions defined
3365 by ANSI to operate on sequences.
3366 * fixed a bug in the build procedure: documentation of SBCL-specific
3367 packages is now preserved and available in the final Lisp image.
3368 * lifted FDEFINITION lookup out of loops in the implementation of
3369 many list operations. (thanks to Robert E. Brown)
3370 * fixed a bug in the reader: the #n# reader macro now works for
3371 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3372 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3373 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3374 E. Brown and Tony Martinez respectively)
3375 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3376 SLOT-BOUNDP: in particular, it is now able to optimize them much
3377 better, and is now not vulnerable to having packages renamed.
3378 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3379 always called when a slot is not present in an instance. (thanks
3381 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3382 longer signal an error on unreading a character following EOF on
3383 the previous constituent stream. (thanks to Tony Martinez)
3384 * fixed some bugs revealed by Paul Dietz' test suite:
3385 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3386 not just nonnegative fixnums;
3387 ** the logical bit-array operators such as BIT-AND now accept an
3388 explicit NIL for their "opt-arg" argument (to indicate a
3389 freshly-consed result bit-array);
3390 ** ELT now signals an error on an invalid sequence index in safe
3392 ** the type system is now cleverer about negations of numeric
3393 types, and consequently understands the BIGNUM and RATIO types
3395 ** the type system is now cleverer about the interaction between
3396 INTEGER and RATIO types: while bugs still remain, many more
3397 cases are accurately computed;
3398 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3399 if it is in the last clause;
3400 ** CONSTANTLY now correctly returns a side-effect-free function in
3402 ** DECLARE is no longer treated as a special-operator; in
3403 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3404 * incremented fasl file version number due to the change in the
3405 DEFSTRUCT-SLOT-DESCRIPTION structure.
3407 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3408 * minor incompatible change: code processed by the "interpreter" or
3409 EVAL now has a compilation optimization policy of (DEBUG 2)
3410 (changed from (DEBUG 1)) to improve debuggability of interactive
3411 development, and to allow the use of the debug RETURN command in
3413 * an experimental implementation of the RETURN command for the
3414 debugger has been included. (thanks to Frederik Kuivinen)
3415 * fixed bug 62: constraints were not propagated into a loop.
3416 * fixed bug in embedded calls of SORT (reported and investigated by
3418 * fixed some bugs revealed by Paul Dietz' test suite:
3419 ** printing and reading of arrays with some dimensions having
3420 length 0 (thanks to Gerd Moellmann);
3421 ** BOA constructor with &AUX argument without a default value does
3422 not cause a type error;
3423 ** CONSTANTP now returns true for all self-evaluating objects.
3425 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3426 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3427 accessors that are related by inheritance, as specified in the
3428 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3429 Valtteri Vuorikoski)
3430 * The compiler is now able to inline functions that were defined in
3431 a complex lexical environment (e.g. inside a MACROLET).
3432 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3434 * Support for the upcoming FreeBSD-5.0 release has been included.
3435 (thanks to Dag-Erling Smorgrav)
3436 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3437 effect when it is not in a toplevel context.
3438 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3439 stand a better chance of being correct. (thanks to Gerd
3441 * fixed bug in COERCE, which now signals an error on coercing a
3442 rational to a bounded real type which excludes the expected
3444 * The compiler is now able to derive types more accurately from the
3445 COERCE and COMPILE functions.
3446 * fixed bug 223: functional binding is considered to be constant
3447 only for symbols in the CL package.
3448 * fixed bug 231: SETQ did not check the type of a variable being set
3449 (reported by Robert E. Brown)
3450 * A new optimization for MAKE-INSTANCE has been included, fixing
3451 various bugs (including relating to :ALLOCATION :CLASS slots and
3452 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3454 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3455 ** As required by ANSI, LOOP now disallows anonymous collection
3456 clauses such as COLLECT I in conjunction with aggregate boolean
3457 clauses such as THEREIS (= I 1);
3458 ** LOOP now signals an error when any variable is reused in the
3459 same loop (including the potentially useful construct analogous
3460 to WITH A = 1 WITH A = (1+ A);
3461 ** IT is only a special loop symbol within the first clause of a
3462 conditional loop clause;
3463 ** LOOP with a typed iteration variable over a hashtable now
3464 signals a type error iff it should.
3465 * fixed some other bugs revealed by Paul Dietz' test suite:
3466 ** FILE-STREAM now names the class previously known as FD-STREAM;
3467 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3468 argument) no longer signals an error;
3469 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3470 of the slot symbol, rather than using the current package
3471 ((:CONC-NAME "") continues to intern the slot's name in the
3473 * incremented fasl file version number, because of the incompatible
3474 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3475 of the new implementation of DEFINE-COMPILER-MACRO.
3477 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3478 * Support for building SBCL for MIPS platforms running in
3479 little-endian mode has now been checked in, and basic
3480 functionality on said platforms verified.
3481 * minor incompatible change: PCL now records the pathname of a file
3482 in which methods and the like are defined, rather than its
3484 * minor incompatible change: TRUENAME now considers the truename of
3485 a file naming a directory to be the pathname with :DIRECTORY
3486 component indicating that directory.
3487 * minor incompatible change: a NAMED clause in the extended form of
3488 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3489 reason for the previous behaviour is unclear.
3490 * more systematization and improvement of CLOS and MOP conformance
3491 in PCL (thanks to Gerd Moellman and Pierre Mai):
3492 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3494 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3495 primary methods with no specializers;
3496 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3498 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3499 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3500 FORWARD-REFERENCED-CLASSes; error reporting on
3501 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3503 ** SXHASH on CLOS instances now uses a slot internal to the
3504 instance to return different numbers on distinct instances,
3505 while preserving the same return value through invocations of
3507 ** DEFMETHOD signals errors when methods with longer incongruent
3508 lambda lists are added to generic functions;
3509 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3510 CLASS, as specified in AMOP;
3511 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3512 on the order returned by the primary method for classes of
3513 class STANDARD-CLASS;
3514 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3515 * fixed some bugs shown by Paul Dietz' test suite:
3516 ** DOLIST puts its body in TAGBODY;
3517 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3519 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3520 value producing form;
3521 ** if more variables are given to PROGV than values, extra
3522 variables are bound and made to have no value;
3523 ** NSUBSTITUTE on list arguments gets the right answer with
3525 ** ELT signals an error of type TYPE-ERROR when the index argument
3526 is not a valid sequence index;
3527 ** LOOP signals (at macroexpansion time) an error of type
3528 PROGRAM-ERROR when duplicate variable names are found;
3529 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3530 ** FUNCALL of special-operators now cause an error of type
3532 ** PSETQ now works as required in the presence of side-effecting
3533 symbol-macro places;
3534 ** NCONC accepts any object as its last argument;
3535 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3537 ** loop-for-as-package does not require a package to be explicitely
3539 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3541 * fixed bug 166: compiler preserves "there is a way to go"
3542 invariant when deleting code.
3543 * fixed bug 172: macro lambda lists with required arguments after
3544 &REST arguments now cause an error to be signalled. (thanks to
3546 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3547 bug. (thanks to Matthew Danish)
3548 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3550 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3551 arguments are lexically rebound. (thanks to Gerd Moellmann and
3553 * fixed bug 194: error messages are now more informative when there
3554 is no primary method applicable in a call to a generic
3555 function. (thanks to Gerd Moellmann)
3556 * fixed bug in command line argument checking (thanks to Julian
3558 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3559 (thanks to Matthew Danish)
3560 * incremented fasl file version number, because of the
3561 SXHASH-related changes in the layout of CLOS data structures
3563 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3564 * minor incompatible change: The runtime (the Unix executable named
3565 "sbcl") is now much pickier about the .core files it will load.
3566 Essentially it now requires .core files to descend from the same
3567 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3568 as the runtime does. (The intent is to prevent the crashes which
3569 can occur, and which can even be reported as mysterious failures,
3570 when people patch the sources or change the build parameters
3571 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3572 sbcl and .core files.)
3573 * fixed bug: VALUES-LIST is no longer optimized away.
3574 * fixed bug 142: The FFI conversion of C string values to Lisp
3575 string values no longer conses excessively. (thanks to Nathan
3576 Froyd porting Raymond Toy's fix to CMU CL)
3577 * began to systematize and improve MOP conformance in PCL (thanks to
3578 Nathan Froyd, Gerd Moellman and Pierre Mai):
3579 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3581 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3582 ** FINALIZE-INHERITANCE is now called on class finalization;
3583 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3584 argument precedence order.
3585 * fixed bug 202: The compiler no longer fails on functions whose
3586 derived types contradict their declared type.
3587 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3588 so it can be non-toplevel.
3589 * The fasl file version number has changed (because of the new
3590 implementation of DEFMACRO).
3591 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3592 safe code, that any length requirement by their type-specifier
3593 argument is valid. The exceptions to this are described in bug
3595 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3596 functions now check the types of their inputs as required by ANSI.
3597 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3598 introduced symbol is DECLAREd to be SPECIAL.
3599 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3600 * fixed bug: :COUNT argument to sequence functions may be negative
3601 * fixed bug: body of DO-SYMBOLS may contain declarations
3602 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3603 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3604 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3605 symbol macro only once
3606 * fixed printing of call frame when argument list is unavailable
3607 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3608 * compiler no longer signals WARNING on unknown keyword
3611 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3612 * A beta-quality port to the mips architecture running Linux,
3613 based on the old CMUCL backend, has been made. It has been tested
3614 on a big-endian kernel, and works sufficiently well to be able to
3615 rebuild itself; it has not been tested in little-endian mode.
3616 * fixed an inconsistency between gencgc.c and purify.c which made
3617 dumping/loading .core files unreliable
3618 * fixed bug 120a: The compiler now deals correctly with IFs where
3619 the consequent is the same as the alternative, instead of
3620 misderiving the return type. (thanks to Alexey Dejneka)
3621 * fixed bug 113: Logical pathnames are now dumpable (the logical
3622 host is resolved at load-time, throwing an error if it is not
3624 * fixed bug 174: FORMAT's error message is slightly clearer when a
3625 non-printing character is used in a format directive.
3626 * fixed several bugs in compiler checking of type declarations, i.e.
3627 violations of the Python "declarations are assertions" principle
3628 (thanks to Alexey Dejneka)
3629 * fixed several bugs in PCL's error checking (thanks to Gerd
3631 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3633 * fixed bug in compilation of functions as first class values
3634 (thanks to Antonio Martinez-Shotton)
3635 * The compiler's handling TYPE-ERRORs which it can prove will
3636 inevitably happen at runtime has been cleaned up and corrected
3637 in several ways. (thanks to Alexey Dejneka)
3638 * improved argument type checking for various basic arithmetic
3639 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3640 lavished on them in the past that they can be compiled in many
3641 ways in different special cases
3642 * fixed bug 181: compiler checks validity of user supplied type
3644 * cleaned up code flushing in optimization: Function calls which
3645 should signal errors for safety purposes (e.g. which ANSI says
3646 should signal errors when their arguments are of incorrect type)
3647 are no longer optimized away.
3648 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3649 * incremented fasl file version number, because changes in the
3650 implementation of sequence functions like COERCE caused
3651 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3652 in old inline expansions) to become undefined. (Actually these
3653 changes were later undone, so we might very well be binary
3654 compatible with 0.7.7 after all, but leaving the version number
3655 incremented seemed like the simplest and most conservative
3658 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3659 * An alpha-quality port to the parisc architecture running Linux,
3660 based on the old CMUCL backend, has been made. This, even more so
3661 than the other backends, should be considered still a work in
3662 progress; known problems include that the Linux kernel in 64-bit
3663 mode does not propagate the correct sigcontext structure to
3664 userspace, and consequently SBCL on a parisc64 kernel will not
3666 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3667 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3668 suppressed.) Also now that the compiler is looking at declarations
3669 in the environment, it checks optimization declarations as well,
3670 and suppresses inlining when (> DEBUG SPEED).
3671 * More fixes have been made to treatment of floating point exception
3672 treatment and other Unix signals. In particular, floating point
3673 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3674 * The detection and handling of control stack exhaustion (infinite
3675 or very deeply nested recursion) has changed. Stack exhaustion
3676 detection is now done by write-protecting pages at the OS level
3677 and applies at all optimization settings; when found, a
3678 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3679 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3680 be caught using IGNORE-ERRORS.
3681 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3682 correctly when transforming recursive LABELS functions to LETs.
3683 (thanks to Alexey Dejneka)
3684 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3685 that are names of constants or global variables.
3686 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3687 alien routines with docstrings.
3688 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3689 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3691 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3692 (thanks to Eric Marsden)
3693 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3694 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3695 * Bug fix: The SPARC backend can now compile functions involving
3696 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3697 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3698 to a functions expecting a PATHNAME-DESIGNATOR.
3699 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3700 lambda lists. (thanks to Alexey Dejneka)
3701 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3702 functions so that EXPORTing the name of the class doesn't cause
3703 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3704 to Antonio Martinez for reporting this)
3705 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3706 constant-folded without failing an assertion. (thanks to Einar
3707 Floystad Dorum for reporting this)
3708 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3709 types are now dealt with more correctly by the compiler.
3710 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3711 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3712 behaviour analogous to RENAME-FILE. This puts its behaviour more
3713 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3715 * The fasl file version number has changed again. (because of the
3716 bug fix involving the names of PCL MAKE-INSTANCE functions)
3718 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3719 * bug fix: Floating point exceptions are treated much more
3720 consistently on the x86/Linux and PPC/Linux platforms.
3721 * Array initialization with :INITIAL-ELEMENT is now much faster for
3722 cases when the compiler cannot open code the array creation, but
3723 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3724 array accesses have also seen a speed increase.
3725 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3726 specified. (This was at the root of some bad interactions between
3727 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3729 * bug fix: Internal error arguments for undefined functions are now
3730 computed correctly on the PPC/Linux platform.
3731 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3732 Raymond Toy's patch for CMU CL)
3733 * Support for the Solaris 9 operating environment has been included
3734 (thanks to Daniel Merritt)
3735 * A very ugly but hopefully complete draft of the missing FFI chapter
3736 of the manual has been created by reformatting the corresponding
3737 CMU CL manual chapter into (currently very ugly and incoherent)
3738 DocBook and bringing it up to date for SBCL behavior. Thus, the
3739 manual is now essentially complete, at least by my extreme
3740 once-and-only-once standards, whereby it's acceptable to refer to
3741 the doc strings of SB-EXT functions as the primary documentation.
3742 * The fasl file version number has changed again, due to cleanup of
3743 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3744 is no longer a static symbol.)
3746 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3747 * SBCL now builds with OpenMCL (version 0.12) as the
3748 cross-compilation host; also, more progress has been made toward
3749 bootstrapping under CLISP.
3750 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3752 * bug 158 fixed: The compiler can now deal with integer loop
3753 increments different from 1; fixing this turned out also to fix
3755 * bug 169 fixed: no more bogus warnings about using lexical bindings
3756 despite the presence of perfectly good SPECIAL declarations (thanks
3757 to David Lichteblau)
3758 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3759 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3760 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3762 * bug 180 fixed: Method combination specifications no longer ignore
3763 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3764 * bug fix: Structure type predicate functions now check their argument
3765 count as they should.
3766 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3767 correctly. (thanks to Pierre Mai)
3768 * minor incompatible change: The --noprogrammer option is deprecated
3769 in favor of the new --disable-debugger option, which is very similar.
3770 (The major difference is that it takes effect at a slightly different
3771 time at startup, causing handling of errors in --sysinit and
3772 --userinit files will be affected differently.) The
3773 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3774 been added to allow this functionality to be controlled from ordinary
3775 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3776 maintainers, who might want to run non-interactive scripts to
3777 build SBCL cores which will later be used interactively.)
3778 * minor incompatible change: The LOAD function no longer, when given
3779 a wild pathname to load, loads all files matching that pathname.
3780 Instead, an error of type FILE-ERROR is signalled.
3782 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3783 * bug 147 fixed: The compiler preserves its block link/count
3784 invariants more correctly now so that it doesn't crash. (thanks
3786 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3788 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3789 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3790 no-value-for-this-character as NIL (as specified by ANSI).
3791 * HOST-NAMESTRING on physical pathnames now returns a string that is
3792 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3793 (thanks to Christophe Rhodes)
3794 * The Alpha port handles icache flushing more correctly. (thanks to
3796 * More progress has been made toward bootstrapping under CLISP. (thanks
3797 to Christophe Rhodes)
3798 * The fasl file format has changed again, because dynamic loading
3799 on OpenBSD (which has non-ELF object files) motivated some cleanups
3800 in the way that foreign symbols are transformed and passed around.
3801 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3802 is no longer treated as whitespace by the reader, but instead as
3803 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3804 |A
\7fB|, instead of A as it used to.
3806 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3807 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3808 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3809 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3810 this as of 0.7.1.45, but was left out of the previous news section
3811 (thanks to Dan Barlow)
3812 * SBCL now runs on the Solaris operating system on SPARC architectures
3813 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3814 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3815 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3816 * SPARC backend cleanups, allowing builds of cores optimized for V8
3817 and V9 SPARCS, and also emission of code targeted to a particular
3818 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3820 * SBCL is closer to bootstrapping under CLISP, thanks to various
3821 fixes by Christophe Rhodes.
3822 * The fasl file format has changed again, to allow the compiler's
3823 INFO database to support symbol macros.
3824 * The user manual (in doc/) is formatted into HTML more nicely.
3825 (thanks to coreythomas)
3826 * The system is smarter about SUBTYPEP relationships, especially
3827 those involving NOT types (including types such as ATOM which are
3828 represented internally using NOT types). Thus SUBTYPEP is less
3829 likely to return (VALUES NIL NIL) in general, and in particular
3830 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3832 * The fasl file format has changed again, because the internal
3833 representation of types now includes a new slot to support the new
3834 SUBTYPEP-of-NOT-types logic.
3835 * (not a change in the main branch of SBCL, but a related prototype
3836 which can hopefully be merged into the main branch of SBCL in the
3837 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3838 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3839 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3840 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3841 dispatch macro character combinations. (thanks to Alexey Dejneka)
3842 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3843 that superficially look like logical namestrings correctly.
3844 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3846 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3847 default supplied-p) for &optional and &key arguments. (thanks to
3850 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3851 * incompatible change: The compiler is now less aggressive about
3852 tail call optimization, doing it only when (> SPACE DEBUG) or
3853 (> SPEED DEBUG). (This is an incompatible change because there are
3854 programs which relied on the old CMU-CL-style behavior to optimize
3855 away their unbounded recursion which will now die of stack overflow.)
3856 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3857 for non-GENCGC systems has been increased to 20M (since that
3858 seems much closer to the likely performance optimum for modern
3859 systems than the old 4M value was)
3860 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3861 and *DEBUG-PRINT-LEVEL*
3862 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3863 of CMU CL's support for SPARC, and various endianness and other
3864 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3865 * new syntactic sugar for the Unix command line: --load foo.bar is now
3866 an alternate notation for --eval '(load "foo.bar")'.
3868 ** The system now detects stack overflow and handles it gracefully,
3869 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3870 optimization settings. (This is a good thing in general, and
3871 its introduction in this version should be particularly timely
3872 for anyone whose code fails because of suppression of tail
3874 ** The system now hunts for the C variable "environ" in a more
3875 devious way, to avoid segfaults when the C library version differs
3876 between compile time and run time. (thanks to Christophe Rhodes)
3877 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3878 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3879 ** The compiler no longer issues bogus style warnings for undefined
3880 classes in the same source file as the DEFCLASSes which defined
3881 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3883 ** fixes in CONDITION class precedence list for undefined function
3884 errors (thanks to Alexei Dejneka)
3885 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3886 correctly. (thanks to Dan Barlow)
3887 ** portability fixes aiming at bootstrapping under CLISP (thanks
3888 to Dave McDonald and Christophe Rhodes)
3889 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3890 ** fixes in type translation and and type inference (thanks to
3892 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3893 ** various fixes in the new ports (thanks to Dan Barlow)
3894 * several changes related to debugging:
3895 ** suppression of tail recursion, as noted above
3896 ** stack overflow detection, as noted above
3897 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3898 is now the default. (For some time encapsulation has been more
3899 reliable than the breakpoint-based :ENCAPSULATE NIL
3900 implementation, at least on X86 systems; and I just noticed that
3901 encapsulation also seems closer to the spirit of the ANSI
3904 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3906 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3907 up properly again. (There was a packaging bug in 0.7.0 which
3908 left their definitions in SB-SYS::LOAD-FOREIGN and
3909 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3910 vital for most things which interface to C-level interfaces,
3911 like extensions working with sockets or databases or
3912 Perl-compatible regexes or whatever, and the need to fix
3913 this bug is the main reason that 0.7.1 was released so
3915 ** DEFGENERIC is now choosier about the methods it redefines, so that
3916 reLOADing a previously-LOADed file containing DEFGENERICs does
3917 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3918 cycle now works as it should. (thanks to Alexey Dejneka)
3919 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3920 fixed by Christophe Rhodes. (He actually submitted this patch
3921 months ago, and I delayed until after 0.7.0.)
3922 ** Bug 111 (internal compiler confusion about runtime checks on
3923 FUNCTION types) was fixed by Alexey Dejneka.
3924 * Some internal cleanups (getting rid of variables which aren't
3925 needed now that the byte interpreter is gone) caused the fasl
3926 file format number to change again.
3928 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3929 * major incompatible change: The default fasl file extension, i.e. the
3930 default extension for files produced by COMPILE-FILE, has changed
3931 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3933 ** There are many changes in the implementation of the compiler.
3934 SBCL is now essentially a compiler-only implementation of ANSI
3935 Common Lisp. EVAL still "interprets" a few special cases, but
3936 almost all the interesting cases are handled by creating
3937 a LAMBDA expression, calling COMPILE on it, then calling
3938 FUNCALL on the result.
3939 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3940 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3941 Since the code is newer, there might still be some new bugs
3942 (though not as many as before Martin Atzmueller's fixes:-). But
3943 the new code is substantially simpler and clearer, and hopefully
3944 any remaining bugs will be simpler, less fundamental, and more
3945 fixable then the bugs in the old code.
3946 ** The revised compiler is still a little unsteady on its feet.
3948 *** The debugging information it produces (particularly the names
3949 of FUNCTION objects) is sometimes much less useful than what
3950 the old compiler produced.
3951 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3952 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3953 within a MACROLET) has been temporarily weakened.
3954 ** There are new compiler optimizations for various functions:
3955 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3956 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3957 *** the math functions TRUNCATE, FLOOR, and CEILING
3958 *** the function-of-all-trades COERCE
3959 Mostly these should be transparent, but there's one
3960 potentially-annoying problem (bug 117): when the compiler
3961 inline-expands a function and does type analysis on the result,
3962 it can create control paths which have type mismatches, and
3963 when it can't prove that those control paths aren't taken,
3964 it will issue WARNINGs about the type mismatches. This is
3965 a particular problem in practice for the new sequence functions.
3966 It's not clear how this should be fixed, and for now, a
3967 workaround is given in the entry for 117 in the BUGS file.
3968 ** (Because of the interaction between the two previous items --
3969 occasional inlining problems and new inline expansions -- some
3970 of the new sequence function optimizations won't really kick in
3971 completely until debugging information, and then inlining, are
3972 straightened out in some future version.)
3973 * minor incompatible changes:
3974 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3975 DIRECTORY no longer implicitly promotes NIL slots of its
3976 pathname argument to :WILD. In particular, when you ask for the
3977 contents of a directory (which you used to be able to do without
3978 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3979 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3980 ** changes in behavior that ANSI explicitly defines to be
3981 implementation dependent:
3982 *** The new compiler-only implementation still conforms with ANSI,
3983 but acts a little different than before. Besides the obvious
3984 changes in performance tradeoffs (that the cost per form passed
3985 to EVAL has gone up, and the cost per form executed by EVAL
3986 has gone down), the behavior of the system changes a little
3987 because there are no longer any interpreted function objects.
3988 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3989 e.g. doing COMPILE on the output of interactive DEFUN is
3991 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3993 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3994 has changed from (:CL) to NIL.
3995 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3996 e.g. #\Newline and #\Tab, don't have names specified in the
3997 ANSI Common Lisp standard, is now based on their ASCII symbolic
3998 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3999 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4000 are no longer used for output.
4001 ** changes in internal implementation constants:
4002 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4003 4 million. (If your application spends a lot of time GCing and
4004 you have a lot of RAM, you might want to experiment with
4005 increasing it even more.)
4006 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4007 However, almost all old code should still continue to work without
4008 immediate update, as SB-C-CALL is now a (deprecated) nickname
4010 ** Old operator names in the style DEF-FOO are now deprecated in
4011 favor of new corresponding names DEFINE-FOO, for consistency with
4012 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4013 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4014 internal symbols, but a few supported extensions like
4015 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4016 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4017 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4018 etc. as you get deeper into recursive calls to the debugger
4019 command loop, instead of the old "5]", "5]]", "5]]]"
4020 sequence. (I was motivated to do this when squabbles between
4021 ILISP and SBCL left me very deeply nested in the debugger. In the
4022 short term, this change will probably provoke more ILISP/SBCL
4023 squabbles, but hopefully it will be an improvement in the long run.)
4024 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4025 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4026 function, since declaiming return types involving aliens is
4027 (1) annoyingly messy to do by hand and (2) vital to efficient
4028 compilation of code which calls such functions.
4029 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4030 longer reexported by the SB-EXT package. They're solely useful
4031 for alien code, so it seems more logical that you should get
4032 them from the SB-ALIEN package, not in SB-EXT.
4033 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4034 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4035 features. Instead, the code that they used to control is always
4036 built into the system.
4037 * many other bug fixes
4038 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4039 advantage of the new EVAL-WHEN stuff and to clean them up in
4040 general, and they are now more ANSI-compliant in a number of
4041 ways. Martin Atzmueller is responsible for a lot of this.
4042 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4044 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4045 *** correct ERROR type for various file operations
4046 *** some fixes for Lisp streams
4047 *** DEFMETHOD syntax checking
4048 *** changing old weird representation of debug information as
4049 strings (which, among their other deficiencies, don't transform
4050 correctly when you rename packages, and don't change their
4051 print representation when you change things like *PACKAGE*
4052 and *PRINT-LENGTH*) to symbols and lists of symbols
4053 He also made several improvements and fixed several bugs in DESCRIBE.
4054 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4056 *** misbehavior of WRITE-STRING/WRITE-LINE
4057 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4058 and several other LOOP problems as well
4059 *** DIRECTORY when similar filenames are present
4060 *** DEFGENERIC with :METHOD options
4061 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4062 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4063 *** argument ordering in FIND with :TEST option
4064 *** mishandled package designator argument in APROPOS-LIST
4065 *** various problems in the backquote readmacro
4066 *** a bug in APROPOS
4067 *** probably some others that I'm not describing very well here,
4068 since the CVS log documents them by reference to sbcl-devel
4069 messages, and the SourceForge archives aren't working well.:-(
4070 ** Dan Barlow improved the Alpha port (and is making progress on the
4071 PPC port, for those of you who think different).
4072 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4073 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4074 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4075 continues to work on the SPARC port (for those of you in a position
4076 to look down upon our little PC-compatible boxes from a great height).
4077 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4078 and uses that copy, rather than the current dynamic value, when
4079 it's trying to decide whether to truncate output. Thus e.g.
4080 (let ((*print-lines* 50))
4081 (pprint-logical-block (stream nil)
4083 (let ((*print-lines* 8))
4084 (print (aref possiblybigthings i) stream)))))
4085 should now truncate the logical block only at 50 lines, instead of
4086 often truncating it at 8 lines, as it did before.
4087 * The doc/cmucl/ directory, containing old CMU CL documentation
4088 from the time of the fork, is no longer part of the base system.
4089 SourceForge has shut down its anonymous FTP service, and with it
4090 my original plan for distributing the old CMU CL documentation
4091 there. For now, if you need these files you can download an old
4092 SBCL source release and extract them from it.
4093 * The fasl file version number changed again, for dozens of reasons,
4094 some of which are apparent above.
4096 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4097 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4098 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4099 patch, so that DISASSEMBLE output is much nicer.
4100 * The code in the SB-PROFILE package now seems reasonably stable.
4101 I still haven't decided what the final interface should look like
4102 (I'd like PROFILE to interact cleanly with TRACE, since both
4103 facilities use function encapsulation) but if you have a need
4104 for profiling now, you can probably use it successfully with
4105 the current CMU-CL-style interface.
4106 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4107 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4108 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4109 link now returns the dangling link itself, and for similar
4110 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4111 link itself. (In these cases the old code signalled an error and
4112 looped endlessly, respectively.) Thus, DIRECTORY now works even
4113 in the presence of dangling and cyclic symbolic links.
4114 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4115 is now a supported extension again, since the consensus on
4116 sbcl-devel was that it can be useful for ordinary development
4117 work, not just for debugging SBCL itself.
4118 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4119 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4120 that currently-defined functions might be redefined later with
4121 different return types.
4122 * Hash tables can be printed readably, as inspired by CMU CL code
4123 of Eric Marsden and SBCL code of Martin Atzmueller.
4124 * better error handling in CLOS method combination, thanks to
4125 Martin Atzmueller porting Pierre Mai's CMU CL patches
4126 * more overflow fixes for >16Mbyte I/O buffers
4127 * A bug in READ has been fixed, so that now a single Ctrl-D
4128 character suffices to cause end-of-file on character streams.
4129 In particular, now you only need one Ctrl-D at the command
4130 line (not two) to exit SBCL.
4131 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4133 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4134 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4135 does the right thing.
4136 * The implementation of some type tests, especially for CONDITION
4137 types, is now tidier and maybe faster, due to CMU CL code
4138 originally by Douglas Crosher, ported by Martin Atzmueller.
4139 * Some math functions have been fixed, and there are new
4140 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4141 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4142 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4143 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4144 likely to be built into sbcl-0.7.0.)
4145 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4146 CL, ported to SBCL by Martin Atzmueller)
4147 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4148 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4149 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4150 * There's a new slam.sh hack to shorten the edit/compile/debug
4151 cycle for low-level changes to SBCL itself, and a new
4152 :SB-AFTER-XC-CORE target feature to control the generation of
4153 the after-xc.core file needed by slam.sh.
4154 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4155 COMPILE-FILE is no longer supported, so that now every function
4156 gets an entry point, so that block compilation looks a little
4157 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4158 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4159 returns the number of bytes consed since the system started,
4160 rather than the number consed since the first time the function
4161 was called. (The new definition parallels ANSI functions like
4162 CL:GET-INTERNAL-RUN-TIME.)
4163 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4164 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4165 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4166 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4167 * Fasl file version numbers are now independent of the target CPU,
4168 since historically most system changes which required version
4169 number changes have affected all CPUs equally. Similarly,
4170 the byte fasl file version is now equal to the ordinary
4173 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4174 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4175 is no longer recognized. I apologize for this, because it was
4176 listed in SB-EXT as a supported extension, but I found that
4177 its existing behavior was poorly specified, as well as incorrectly
4178 specified, and it looked like too much of a mess to straighten it
4179 out. I have enough on my hands trying to get ANSI stuff to work..
4180 * many patches ported from CMU CL by Martin Atzmueller, with
4181 half a dozen bug fixes in pretty-printing and the debugger, and
4182 half a dozen others elsewhere
4183 * fixed bug 13: Floating point infinities are now supported again.
4184 They might still be a little bit flaky, but thanks to bug reports
4185 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4186 as flaky as they were.
4187 * The --noprogrammer command line option is now supported. (Its
4188 behavior is slightly different in detail from what the old man
4189 page claimed it would do, but it's still appropriate under the
4190 same circumstances that the man page talks about.)
4191 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4192 are now supported, and enabled by default. Thus, the compiler can
4193 handle many floating point and complex operations much less
4194 inefficiently. (Thus e.g. you can implement a complex FFT
4196 * The compiler now detects type mismatches between DECLAIM FTYPE
4197 and DEFUN better, and implements CHECK-TYPE more correctly, and
4198 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4199 thanks to patches from Martin Atzmueller.
4200 * various fixes to make the cross-compiler more portable to
4201 ANSI-conforming-but-different cross-compilation hosts (notably
4202 Lispworks for Windows, following bug reports from Arthur Lemmens)
4203 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4204 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4205 fixed thanks to Pierre Mai's CMU CL patches.
4206 * fixes to keep the system from overflowing internal counters when
4207 it tries to use i/o buffers larger than 16M bytes
4208 * fixed bug 45a: Various internal functions required to support
4209 complex special functions have been merged from CMU CL sources.
4210 (When I was first setting up SBCL, I misunderstood a compile-time
4211 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4212 * improved support for type intersection and union, fixing bug 12
4213 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4214 more obscure bugs as well
4215 * some steps toward byte-compiling non-performance-critical
4216 parts of the system, courtesy of patches from Martin Atzmueller
4217 * Christophe Rhodes has made some debian packages of sbcl at
4218 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4219 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4220 stable, but are nonetheless usable. When he's ready, I'd be happy
4221 to add them to the SourceForge "File Releases" section. (And if
4222 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4223 * new fasl file format version number (because of changes in
4224 internal representation of (OR ..) types to accommodate the new
4225 support for (AND ..) types, among other things)
4227 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4228 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4230 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4232 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4233 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4234 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4235 * DESCRIBE now works on structure objects again.
4236 * Most function call argument type mismatches are now handled as
4237 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4238 know whether the function will be redefined before the call is
4239 executed. (The compiler could flag local calls with full WARNINGs,
4240 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4241 it doesn't keep track of enough information to know whether calls
4242 are local in this sense.)
4243 * Compiler output is now more verbose, with messages truncated
4244 later than before. (There should be some supported way for users
4245 to override the default verbosity, but I haven't decided how to
4246 provide it yet, so this behavior is still controlled by the internal
4247 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4248 src/compiler/ir1util.lisp.)
4249 * Fasl file format version numbers have increased again, because
4250 support for the Gray streams extension changes the layout of the
4251 system's STREAM objects.
4252 * The Gray subclassable streams extension now works, thanks to a
4253 patch from Martin Atzmueller.
4254 * The full LOAD-FOREIGN extension (not just the primitive
4255 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4256 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4257 but like most other programs, it defaults to copying the Unix
4258 environment from the original process instead of starting the
4259 new process in an empty environment.
4260 * Extensions which manipulate the Unix environment now support
4261 an :ENVIRONMENT keyword option which doesn't smash case or
4262 do other bad things. The CMU-CL-style :ENV option is retained
4263 for porting convenience.
4264 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4265 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4267 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4269 * A patch from Martin Atzmueller seems to have solved the SIGINT
4270 problem, and as far as we know, signal-handling now works cleanly.
4271 (If you find any new bugs, please report them!)
4272 * The system no longer defaults Lisp source file names to types
4273 ".l", ".cl", or ".lsp", but only to ".lisp".
4274 * The compiler no longer uses special default file extensions for
4275 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4276 seems to expect a single default extension for all compiled code,
4277 and there's no compelling reason to try to stretch the standard
4278 to allow two different extensions.) Instead, byte-compiled files
4279 default to the same extension as native-compiled files.
4280 * Fasl file format version numbers have increased again, because
4281 a rearrangement of internal implementation packages made some
4282 dumped symbols in old fasl files unreadable in new cores.
4283 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4284 many fewer weird special cases.
4285 * Bug #17 (differing COMPILE-FILE behavior between logical and
4286 physical pathnames) has been fixed, and some related misbehavior too,
4287 thanks to a patch from Martin Atzmueller.
4288 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4289 by Tim Moore, ported to SBCL by Martin Atzmueller.
4290 * Martin Atzmueller fixed several filesystem-related problems,
4291 including bug #36, in part by porting CMU CL patches, which were
4292 written in part by Paul Werkowski.
4293 * More compiler warnings in src/runtime/ are gone, thanks to
4294 more patches from Martin Atzmueller.
4295 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4298 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4300 * DESCRIBE now works on CONDITION objects.
4301 * The debugger now handles errors which arise when trying to print
4302 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4304 * The build system now uses an additional file, customize-target-features.lisp,
4305 to allow local modifications to the target *FEATURES* list. (The point of
4306 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4307 debugging features enabled, without having to worry about propagating it
4308 into everyone's system when I do a "cvs update".) When no
4309 customize-target-features.lisp file exists, the target *FEATURES* list
4310 should be constructed the same way as before.
4311 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4312 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4313 warn about behavior which is undefined under the ANSI spec. Note: This
4314 is specified by ANSI, but it's not very popular with programmers.
4315 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4316 macro in the SBCL sources for an example of a workaround which you
4317 might use to make portable ANSI-standard code which does what you want.
4318 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4319 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4320 when it's used as a non-toplevel form. (This is required in order
4321 to implement the DEFCONSTANT-EQX macro.)
4322 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4323 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4324 funny things, due to bugs in the implementation of EVAL-WHEN
4325 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4326 non-toplevel DEFCONSTANTs are uncommon.)
4327 * The core file version number and fasl file version number have been
4328 incremented, because the old noncompliant DEFCONSTANT behavior involved
4329 calling functions which no longer exist, and because I also took the
4330 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4331 * fixed bug 1 (error handling before read-eval-print loop starts), and
4332 redid debugger restarts and related debugger commands somewhat while
4334 ** The QUIT debugger command is gone, since it did something
4335 rather different than the SB-EXT:QUIT command, and since it never
4336 worked properly outside the main toplevel read/eval/print loop.
4337 Invoking the new TOPLEVEL restart provides the same functionality.
4338 ** The GO debugger command is also gone, since you can just invoke
4339 the CONTINUE restart directly instead.
4340 ** The TOP debugger command is also gone, since it's redundant with the
4341 FRAME 0 command, and since it interfered with abbreviations for the
4343 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4345 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4346 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4347 some porting work by Martin Atzmueller)
4348 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4349 with a boatload of patches which he ported to SBCL. Now that those
4351 ** The system tries to make sure that its low-priority messages
4352 are prefixed by semicolons, to help people who like to use
4353 syntax highlighting in their ILISP buffer. (This patch
4354 was originally due to Raymond Toy.)
4355 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4356 patches originally written by Raymond Toy.
4357 ** The compiler understands coercion between single-value and
4358 multiple-VALUES type expressions better, getting rid of some very
4359 weird behavior, thanks to patches originally by Robert MacLachlan
4360 and Douglas Crosher.
4361 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4362 lambda lists, thanks to a patch originally by Pierre Mai.
4363 ** The system no longer bogusly warns about "abbreviated type
4365 ** The compiler gets less confused by inlining and RETURN-FROM,
4366 thanks to some patches originally by Tim Moore.
4367 ** The system no longer hangs when dumping circular lists to fasl
4368 files, thanks to a patch originally from Douglas Crosher.
4369 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4370 undefined function error.
4371 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4372 in structure slot initforms) for now, documented workaround instead:-|
4373 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4374 * fixed bug 5: added stubs for various Gray stream functions called
4375 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4376 installed, at least appropriate type errors are generated
4377 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4378 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4379 consistently in DEFMETHOD forms.
4380 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4381 it doesn't seem to affect SBCL after all
4382 * The C runtime system now builds with better optimization and many
4383 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4385 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4387 * The system is now under CVS at SourceForge (instead of the
4388 CVS repository on my home machine).
4389 * The new signal handling code has been tweaked to treat register
4390 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4391 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4392 downstream, e.g. in debug-int.lisp, has implicit dependencies
4393 on the unsignedness of integer representation of machine words,
4394 and that caused the system to bomb out with infinite regress
4395 when trying to recover from type errors involving signed values,
4396 e.g. (BUTLAST '(1 2 3) -1).)
4397 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4398 (This was one of the bugs Peter Van Eynde reported back in July.)
4399 * The system now uses code inspired by Colin Walters' O(N)
4400 implementation of MAP (from the cmucl-imp@cons.org mailing
4401 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4402 inline the MAP operation, and there is more than one
4403 sequence argument to the MAP call (so that it can't just
4404 do ETYPECASE once and for all based on the type of the
4405 single sequence argument). (The old non-inline implementation
4406 of the general M-argument sequence-of-length-N case required
4407 O(M*N*N) time when any of the sequence arguments were LISTs.)
4408 * The QUIT :UNIX-CODE keyword argument has been renamed to
4409 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4410 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4412 * Raymond Wiker's patches to port dynamic loading from Linux to
4413 FreeBSD have been added.
4414 * The BUGS file is now more nearly up to date, thanks in large part
4415 to Martin Atzmueller's review of it.
4416 * The debugger now flushes standard output streams before it begins
4417 its output ("debugger invoked" and so forth).
4418 * The core version number and fasl file version number have both
4419 been incremented, because of incompatible changes in the layout
4421 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4422 used to not be called for a saved Lisp image.)
4423 * Martin Atzmueller's version of a patch to fix a compiler crash,
4424 as posted on sbcl-devel 13 September 2000, has been installed.
4425 * Instead of installing Martin Atzmueller's patch for the
4426 compiler transform for SUBSEQ, I deleted the compiler transform,
4427 and transforms for some similar consing operations.
4428 * A bug in signal handling which kept TRACE from working on OpenBSD
4430 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4431 away by constant folding
4432 * The system now defines its address space constants in one place
4433 (in the Lisp sources), and propagates them automatically elsewhere
4434 (through GENESIS and the sbcl.h file). Therefore, patching the
4435 address map is less unnecessarily tedious and error-prone. The
4436 Lisp names of address space constants have also been systematized.
4437 * CVS tags like dollar-Header-dollar have been removed from
4438 the sources, because they have never saved me trouble and
4439 they've been source of trouble working with patches and other
4440 diff-related operations.
4441 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4442 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4444 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4446 * The system has been ported to OpenBSD.
4447 * The system now compiles with a simple "sh make.sh" on the systems
4448 that it's supported on. I.e., now you no longer need to tweak
4449 text in the target-features.lisp-expr and symlinks in src/runtime/
4450 by hand, the make.sh takes care of it for you.
4451 * The system is no longer so grossly inefficient when compiling code
4452 involving vectors implemented as general (not simple) vectors (VECTOR T),
4453 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4454 which dares to use the various sequence functions on non-simple
4455 vectors, takes less of a performance hit.
4456 * There is now a primitive type predicate VECTOR-T-P
4457 to test for the (VECTOR T) type, so that e.g.
4458 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4459 can now be compiled with some semblance of efficiency. (The old code
4460 turned the type declaration into a full call to %TYPEP at runtime!)
4461 * AREF on (VECTOR T) is still not fast, since it's still compiled
4462 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4463 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4464 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4465 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4466 without making full calls to SUBTYPEP at runtime.
4467 (Some analogous efficiency issues for non-simple vectors specialized to
4468 element types other than T, or for non-simple multidimensional arrays,
4469 have not been addressed. They could almost certainly be handled the
4470 same way if anyone is motivated to do so.)
4471 * The changes in array handling break binary compatibility, so
4472 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4473 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4474 instead of (VALUES T T).
4475 * By following the instructions that Dan Barlow posted to sbcl-devel
4476 on 2 July 2000, I was able to enable primitive dynamic object
4477 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4478 functionality is not implemented (since it calls ld to resolve
4479 library references automatically, requiring RUN-PROGRAM for its
4480 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4481 try to resolve library references) is now supported.
4482 * The system now flushes the standard output streams when it terminates,
4483 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4484 them at several other probably-convenient times, e.g. in each pass of
4485 the toplevel read-eval-print loop, and after evaluating a form given
4486 as an "--eval" command-line option. (These changes were motivated by a
4487 discussion of stream flushing issues on cmucl-imp in August 2000.)
4488 * The source transform for TYPEP of array types no longer assumes
4489 that an array whose element type is a not-yet-defined type
4490 is implemented as an array of T, but instead punts, so that the
4491 type will be interpreted at runtime.
4492 * There is now some support for cross-compiling in make.sh: each of
4493 the phases of make.sh has its own script. (This should be transparent
4494 to people doing ordinary, non-cross-compile builds.)
4495 * Since my laptop doesn't have hundreds of megabytes of memory like
4496 my desktop machine, I became more motivated to do some items on
4497 my to-do list in order to reduce the size of the system a little:
4498 ** Arrange for various needed-only-at-cold-init things to be
4499 uninterned after cold init. To support this, those things have
4500 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4501 symbols with such names are now uninterned after cold init).
4502 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4503 fasl files for cold load.
4504 ** Remove the old compiler structure pooling code (which used to
4505 be conditional on the target feature :SB-ALLOC) completely.
4506 ** Redo the representation of some data in cold init to be more compact.
4507 (I also looked into supporting byte compiled code at bootstrap time,
4508 which would probably reduce the size of the system a lot, but that
4509 looked too complicated, so I punted for now.)
4510 * The maximum signal nesting depth in the src/runtime/ support code has
4511 been reduced from 4096 to 256. (I don't know any reason for the very
4512 large old value. If the new smaller value turns out to break something,
4513 I'll probably just bump it back up.)
4514 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4516 * Many, many bugs reported by Peter Van Eynde have been added to
4517 the BUGS list; some have even been fixed.
4518 * While enabling dynamic object file loading, I tried to make the
4519 code easier to understand, renaming various functions and variables
4520 with less ambiguous names, and changing some function calling
4521 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4522 * While trying to figure out how to do the OpenBSD port, I tried to
4523 clean up some of the code in src/runtime/. In particular, I dropped
4524 support for non-POSIX signal handling, added various comments,
4525 tweaked the code to reduce the number of compilation warnings, and
4526 renamed some files to increase consistency.
4527 * To support the new automatic configuration functionality in make.sh,
4528 the source file target-features.lisp-expr has been replaced with the
4529 source file base-target-features.lisp-expr and the machine-generated
4530 file local-target-features.lisp-expr.
4531 * fixed a stupid quoting error in make.sh so that using CMU CL
4532 "lisp -batch" as cross-compilation host works again
4534 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4536 * DESCRIBE no longer tries to call itself recursively to describe
4537 bound/fbound values, so that it no longer fails on symbols which are
4538 bound to themselves (like keywords, T, and NIL).
4539 * DESCRIBE now works on generic functions.
4540 * The printer now prints less-screwed-up representations of closures
4541 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4542 * A private symbol is used instead of the :EMPTY keyword previously
4543 used to mark empty slots in hash tables. Thus
4544 (DEFVAR *HT* (MAKE-HASH-TABLE))
4545 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4546 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4547 now does what ANSI says that it should. (You can still get
4548 similar noncompliant behavior if bang on the hash table
4549 implementation with all the symbols you get back from
4550 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4551 This breaks binary compatibility, since tests for equality to
4552 :EMPTY are wired into things like the macroexpansion of
4553 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4555 * There's now a minimal placeholder implementation for CL:STEP,
4556 as required by ANSI.
4557 * An obscure bug in the interaction of the normal compiler, the byte
4558 compiler, inlining, and structure predicates has been patched
4559 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4560 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4562 * Missing ordinary arguments in a macro call are now detected even
4563 when the macro lambda list contains &KEY or &REST.
4564 * The debugger no longer complains about encountering the top of the
4565 stack when you type "FRAME 0" to explicitly instruct it to go to
4566 the top of the stack. And it now prints the frame you request even
4567 if it's the current frame (instead of saying "You are here.").
4568 * As specified by ANSI, the system now always prints keywords
4569 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4571 * The default initial SIZE of HASH-TABLEs is now smaller.
4572 * Type information from CLOS class dispatch is now propagated
4573 into DEFMETHOD bodies, so that e.g.
4574 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4576 is now basically equivalent to
4577 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4578 (DECLARE (TYPE SINGLE-FLOAT X))
4580 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4581 operation, without having to do run-time type dispatch.
4582 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4583 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4584 * Since I don't seem to be making big file reorganizations very often
4585 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4586 is overflowing my ability to conveniently back them up), I've finally
4587 checked the system into CVS. (The CVS repository is on my home system,
4588 not at SourceForge -- putting it on SourceForge might come later.)
4589 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4590 high-level GC-NOTIFY-FOO functions send their output. (There's
4591 still very little control of where low-level verbose GC functions
4592 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4593 less than it used to -- the GC-NOTIFY-FOO functions are now under
4594 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4595 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4596 in only one place in the source code, and propagates it automatically
4597 everywhere that it's needed. Thus e.g. when I bump the version from
4598 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4599 * The C source files now include boilerplate legalese and documentation
4600 at the head of each file (just as the Lisp source files already did).
4601 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4602 to his page will be replaced with a link to his new CLiki service.
4604 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4606 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4607 * The build process now looks for GNU make under the default name "gmake",
4608 instead of "make" as it used to. If GNU make is not available as "gmake"
4609 on your system, you can change this default behavior by setting the
4610 GNUMAKE environment variable.
4611 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4612 can build without error under CMU CL.
4614 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4616 * There is now a partial SBCL user manual (with some new text and some
4617 text cribbed from the CMU CL manual).
4618 * The beginnings of a profiler have been added (starting with the
4619 CMU CL profiler and simplifying and cleaning up). Eventually the
4620 main interface should be through the TRACE macro, but for now,
4621 it's still accessed through vaguely CMU-CL-style functions and macros
4622 exported from the package SB-PROFILE.
4623 * Some problems left over from porting CMU CL to the new
4624 cross-compilation bootstrap process have been cleaned up:
4625 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4626 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4627 part when getting rid of the compiler *BACKEND* stuff.)
4628 ** The value of *NULL-TYPE* was screwed up, because it was
4629 being initialized before the type system knew the final
4630 definition of the 'NULL type. This screwed up several key
4631 optimizations in the compiler, causing inefficiency in all sorts
4632 of places. (I found it because I wanted to understand why
4633 GET-INTERNAL-RUN-TIME was consing.)
4634 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4635 PROCLAIM FTYPE information. Unfortunately this broke binary
4636 compatibility again, since now the forms output by DEFGENERIC
4637 to refer to functions which didn't exist in 0.6.3.
4638 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4639 can use the new (as of 0.6.3) transform for SOME into MAP into
4641 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4642 values to (INTEGER 0 1000000), so that the time code will no longer
4643 occasionally get blown up by Linux returning 1000000 microseconds
4644 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4645 its output conform to the ANSI spec. (Alas, this makes its output
4646 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4647 * A full call to MAP NIL with a single sequence argument no longer conses.
4648 * fixes to problems pointed out by Martin Atzmueller:
4649 * The manual page no longer talks about multiprocessing as though
4650 it were currently supported.
4651 * The ILISP support patches have been removed from the distribution,
4652 because as of version 5.10.1, ILISP now supports SBCL without us
4653 having to maintain patches.
4654 * added a modified version of Raymond Toy's recent CMU CL patch for
4655 EQUALP comparison of HASH-TABLE
4657 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4659 * The system still can't cross-compile itself with
4660 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4661 entails), but at least it can compile more of itself that way
4662 than it used to be able to, and various buglets which were uncovered
4663 by trying to cross-compile itself that way have now been fixed.
4664 * This release breaks binary compatibility again. This time
4665 at least I've incremented the FASL file format version to 2, so that the
4666 problem can be detected reliably instead of just causing weird errors.
4667 * various new style warnings:
4668 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4669 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4670 ** using the lexical binding of a variable named in the *FOO* style
4671 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4672 as specified by ANSI.
4673 * *RANDOM-STATE* is no longer automatically initialized from
4674 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4675 default behavior of the system is to repeat its behavior every time
4676 it's run. If you'd like to change this behavior, you can always
4677 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4678 old convention there was no comparably easy way to get the system to
4679 repeat its behavior every time it was run.
4680 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4681 FTYPE declarations has been removed, in favor of their ANSI
4682 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4683 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4684 the types of their sequence arguments can be determined at compile time.
4685 This is done through a new open code expansion for MAP which eliminates
4686 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4687 argument types can be determined at compile time.
4688 * The optimizer now transforms COERCE into an identity operation when it
4689 can prove that the coerced object is already of the correct type. (This
4690 can be a win for machine generated code, including the output of other
4691 optimization transforms, such as the MAP transform above.)
4692 * Credit information has been moved from source file headers into CREDITS.
4693 * Source file headers have been made more standard.
4694 * The CASE macro now compiles without complaining even when it has
4697 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4699 * (Note that the way that the PCL macroexpansions were rewritten
4700 to accommodate the change in DEFGENERIC below breaks binary
4701 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4702 not run under sbcl-0.6.2. Once we get out of alpha releases,
4703 i.e. hit release 1.0.0, we'll probably try to maintain binary
4704 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4705 and sbcl-1.4.4. Until then, however, it might be fairly common
4706 for maintenance releases to break binary compatibility.)
4707 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4709 * The reporting of unhandled signals has been changed to print some
4710 explanatory text as well as the report form. (Previously only
4711 the report form was printed.)
4712 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4713 it defines, so that the compiler no longer issues undefined function
4714 warnings for compiled-but-not-yet-loaded generic functions.
4715 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4716 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4717 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4718 section of the ANSI spec are supported.
4719 * The "" nickname for the "KEYWORD" package has been removed.
4720 The reader still handles symbol tokens which begin with a package marker
4721 as keywords, but it doesn't expose its mechanism for doing so in the
4722 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4723 * The system now issues STYLE-WARNINGs for contradictory TYPE
4724 proclamations. (Warnings for contradictory FTYPE proclamations would
4725 be nice too, but those can't be done usefully unless the type system
4726 is made smarter about FUNCTION types.)
4727 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4728 systematized, so that "*target-*.lisp is supposed to exist only on the
4729 target and imply that there's a related file which exists on the
4730 host, and *host-*.lisp is supposed to exist only on the host and imply
4731 that there's a related file which exists on the target. This involves a
4732 lot of renaming. Hopefully the acute confusion caused by the renaming
4733 will be justified by the reduction in chronic confusion..
4734 ** runtime-type.lisp -> early-target-type.lisp
4735 ** target-type.lisp -> late-target-type.lisp
4736 ** early-host-format.lisp -> early-format.lisp
4737 ** late-host-format.lisp -> late-format.lisp
4738 ** host-error.lisp -> misc-error.lisp
4739 ** early-error.lisp -> early-target-error.lisp
4740 ** late-error.lisp -> late-target-error.lisp
4741 ** host-defboot.lisp -> early-defboot.lisp
4742 ** code/misc.lisp -> code/target-misc.lisp
4743 ** code/host-misc.lisp -> code/misc.lisp
4744 ** code/numbers.lisp -> code/target-numbers.lisp
4745 ** code/early-numbers.lisp -> numbers.lisp
4746 ** early-host-type.lisp -> early-type.lisp
4747 ** late-host-type.lisp -> late-type.lisp
4748 ** host-typep.lisp -> typep.lisp
4749 ** load.lisp -> target-load.lisp
4750 ** host-load.lisp -> load.lisp
4751 ** host-disassem.lisp -> disassem.lisp
4752 ** host-insts.lisp -> insts.lisp
4753 ** byte-comp.lisp -> target-byte-comp.lisp
4754 ** host-byte-comp.lisp -> byte-comp.lisp
4755 ** host-signal.lisp -> signal.lisp
4756 ** host-defstruct.lisp -> defstruct.lisp
4757 ** late-target-type.lisp -> deftypes-for-target.lisp
4758 Furthermore, several other previously target-only files foo.lisp (e.g.
4759 hash-table.lisp and random.lisp) have been split into a target-and-host
4760 foo.lisp file and a target-only target-foo.lisp file, with their key type
4761 definitions in the target-and-host part, so that the cross-compiler will
4762 know more about target types.
4763 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4764 gone away. In their place are various *BACKEND-FOO* variables
4765 corresponding to the slots of the old structure.
4766 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4767 into the target SBCL has been fixed.
4768 * The chill.lisp system for loading cold code into a running SBCL
4770 * Support for the CMU CL "scavenger hook" extension has been removed.
4771 (It was undocumented and unused in the CMU CL sources that SBCL was
4772 derived from, and stale in sbcl-0.6.1.)
4773 * Various errors in the cross-compiler type system were detected
4774 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4775 (enabling various consistency checks). Many of them were fixed,
4776 but some hard problems remain, so the compiler is back to
4777 running without *TYPE-SYSTEM-INITIALIZED* for now.
4778 * As part of the cross-compiler type system cleanup, I implemented
4779 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4780 * I have started adding UNCROSS calls throughout the type system
4781 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4782 on cross-compiler input files will be able to go away, and various
4784 * CONSTANTP now returns true for quoted forms (as explicitly required
4787 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4789 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4790 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4791 (MAKE-LIST -1). In the longer term, it ought to become true
4792 that declarations are assertions even at SAFETY 1. For now, it's not
4793 quite true even at SAFETY 3, but it's at least more nearly true..
4794 (Note that this change seems to increases the size of the system by
4795 O(5%) and to decrease the speed of the compiler by 20% or more.)
4796 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4797 for the problem of printing dozens of lines of distracting information
4798 about low-level system machinery as part of the top stack frame
4799 on entry to the debugger when an undefined function was called.
4800 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4801 is not reset to COMMON-LISP-USER.
4802 * Compilation of stuff related to dyncount.lisp has been made conditional
4803 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4804 smaller. The various dyncount-related symbols have been moved into
4805 a new "SB-DYNCOUNT" package.
4806 * tty-inspect.lisp has been renamed to inspect.lisp.
4807 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4808 feature has gone away. (When we eventually port to other flavors of
4809 libc and/or Unix, we'll try to make the differences between flavors
4810 invisible at the user level.)
4811 * Various other *FEATURES* tags, and/or their associated conditionals,
4812 have been removed if obsolescent, or given better documentation, or
4813 sometimes given more-mnemonic names.
4815 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4817 * tidied up "make.sh" script
4818 * tidied up system directory structure
4819 * better "clean.sh" behavior
4820 * added doc/FOR-CMUCL-DEVELOPERS
4821 * many many small tweaks to output format, e.g. removing possibly-confusing
4822 trailing #\. character in DESCRIBE-INSTANCE
4823 * (EQUALP #\A 'A) no longer signals an error.
4824 * new hashing code, including EQUALP hashing
4825 * tidied up Lisp initialization and toplevel
4826 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4827 * command line argument processing
4828 * added POSIX-GETENV function to deal with Unix-ish environment variables
4829 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4830 terminating SBCL on EOF
4831 * non-verbose GC by default
4832 * There is no more "sbcl" shell script; the sbcl file is now the C
4833 runtime executable (just like CMU CL).
4834 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4836 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4837 symbol and package information as Lisp native symbol and package objects
4838 instead of strings naming symbols and strings naming packages. This way,
4839 whenever packages are renamed (as in warm init), debug information is
4840 transformed along with everything else.
4841 * tweaked the optimization policy declarations which control the building
4842 of SBCL itself. Now, among other things, the system no longer saves
4843 source location debugging information. (This helps two problems at once
4844 by reducing SBCL size and by keeping SBCL from trying to look for its
4845 sources -- which may not exist -- when reporting errors.)
4846 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4847 debugging and testing purposes
4848 * cleaned up printing, making the printer call PRINT-OBJECT for
4849 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4850 methods, giving nearly-ANSI behavior
4851 * converted almost all special variables to use *FOO* naming convention
4852 * deleted PARSE-TIME functionality, since it can be done portably
4853 * moved some files out of cold init into warm init
4854 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4856 * regularized formatting of source files
4857 * added an install.sh script
4858 * fixed ridiculous memory usage of cross-compiler by making
4859 compiler/alloc.lisp not try to do pooling unless it can hook
4860 itself into the GC of the cross-compilation host. Now the system
4861 builds nicely on my old laptop.
4862 * added :SB-ALLOC in target-features.lisp-expr
4863 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4864 was not implemented)
4865 * re-did condition handling and note reporting in the compiler. Notes
4866 are no longer handled by signalling conditions. Style warnings
4867 and warnings are handled more correctly and reported in such a way
4868 that it's easy to find one or the other in your output (so that you
4869 can e.g. figure out which of many problems caused COMPILE-FILE to
4871 * changed the severity of several compiler warnings from full WARNING
4872 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4873 compiler note reporting so that it doesn't use the condition system
4874 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4875 COMPILE-FILE command)
4876 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4877 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4878 no longer supported, since their implementation was deeply intertwingled
4879 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4880 * removed bogus "support" for compiler macros named (SETF FOO), and
4881 removed the compiler macro for SETF INFO (but only after making a fool
4882 of myself on the cmucl-imp mailing list by posting a bogus patch for
4883 DEFINE-COMPILER-MACRO..)
4884 * Compiled files containing forms which have side effects on the Lisp
4885 reader (such as DEFPACKAGE forms) are now handled more correctly.
4886 (Compiler queuing of top level lambdas has been suppressed by setting
4887 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4888 * deleted various currently-unused source files, e.g. gengc.lisp. They
4889 may be added back at some point e.g. when porting to other architectures,
4890 but until they are it's distracting to distribute them and to try to
4892 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4893 there were so many of them they're just distractions, and UNCROSS is
4894 known to be able to handle the current sources
4895 * moved PROFILE functionality into TRACE, so that it will be clear
4896 how the wrapping and unwrapping of functions when you profile them
4897 interacts with the wrapping and unwrapping of functions when you
4898 trace them. (Actually, the functionality isn't there yet, but at least
4899 the interface specification is there. Hopefully, the functionality will
4900 arrive with some future maintenance release.)
4901 * removed host-oops.lisp
4902 * changed signature of QUIT function to allow UNIX-CODE argument
4903 * fixed READ-SEQUENCE bug
4904 * tweaked verbose GC output so that it looks more like the progress
4905 output that ANSI specifies for functions like LOAD
4906 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4907 * added <http://sbcl.sourceforge.com> to the banner information printed by