1 ;;;; -*- coding: utf-8; -*-
2 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
3 appropriately typed structure slots without locking.
4 * enhancement: reduced conservativism on GENCGC platforms: on
5 average 45% less pages pinned (measured from SBCL self build).
6 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
7 mutate constant symbols or violate declaimed type of the symbol.
9 changes in sbcl-1.0.20 relative to 1.0.19:
10 * minor incompatible change: OPTIMIZE qualities
11 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
12 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
13 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
14 * documentation: some slot access efficiency guidelines have been
15 added to the user manual.
16 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
17 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
19 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
20 to more efficient EQ-comparison versions more often.
21 * optimization: enhanced derivation of DOLIST iteration variable type
23 * optimization: constant folding of simple (LIST ...) forms as DOLIST
25 * optimization: runtime lookup of function definitions can be
26 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
27 * optimization: compiler is able to derive the return type of
28 (AREF (THE STRING X) Y) as being CHARACTER.
29 * optimization: CLRHASH on empty hash-tables no longer does pointless
30 work. (thanks to Alec Berryman)
31 * optimization: REPLACE deftransforms don't punt when :START1 or
33 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
34 no longer emits a code deletion note. (reported by Andrew
36 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
37 functions with an odd number of &OPTIONAL arguments, a &REST
38 argument, and one or more &KEY arguments at the call site.
39 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
40 arguments appeared at call sites as well.
41 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
42 READ-LINE &co can no longer read from them afterwards. (reported
44 * bug fix: fixed #427: unused local aliens no longer cause compiler
45 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
47 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
48 alien-stack leakage. (reported by Andy Hefner)
49 * bug fix: PROGV signals an error when an attempt to violate declared
50 type of a variable or bind a constant is made.
51 * bug fix: SET signals an error when an attempt to violate declared
52 type of a variable is made.
53 * bug fix: restart computation during the execution of a restart
54 test function no longer causes infinite recursion. (reported by
56 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
57 signals an error. (thanks to Pierre Mai)
58 * bug fix: EXPORT left symbol unexported in conflict situations.
59 (thanks to Michael Weber)
60 * bug fix: correctly handle name conflicts involving CL:NIL.
61 (thanks to Michael Weber)
62 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
63 conflicts arising from USEing package with conflicting symbols
64 correctly. (thanks to Michael Weber)
66 changes in sbcl-1.0.19 relative to 1.0.18:
67 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
68 warnings that go otherwise unhandled will be muffled if they are
69 of the type that's the value of this variable.
70 * optimization: stack allocation is slightly more efficient on x86
72 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
73 where a raw slot always is initialized using the initform whose
74 type is not know sufficiently well a compile-time are now compiled
75 correctly. (reported by John Morrison)
76 * bug fix: compiler no longer makes erronous assumptions in the
77 presense of non-foldable SATISFIES types.
78 * bug fix: stack analysis missed cleanups of dynamic-extent
79 arguments in non-let-converted calls to local functions.
80 * improvements to the Windows port:
81 ** adjusted address spaces for building on both Win32 and
82 Win64. (thanks for John Connors)
83 * fixed some bugs revealed by Paul Dietz' test suite:
84 ** interval arithmetic during type derivation used inexact integer
85 to single-float coercions.
86 ** arithmetic operations involving large integers and single
87 floats give the same results in compiled and interpreted code.
88 ** deriving the result type of COERCE no longer signals an error
89 if the derived type of the second argument is a MEMBER type
90 containing invalid type specifiers.
91 ** ADJOIN with constant NIL as second argument works correctly.
92 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
94 changes in sbcl-1.0.18 relative to 1.0.17:
95 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
96 profiles only the current thread.
97 * minor incompatible change: changes to SYMBOL-VALUE of constants
98 defined with DEFCONSTANT now signal an error.
99 * enhancement: SB-SPROF now has support for wallclock profiling,
100 and is also able to profile specific threads. REPORT output
101 has also additional sorting options.
102 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
104 * optimization: structure allocation has been improved
105 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
106 ** out of line constructors are ~10% faster.
107 ** inline constructors are ~15% faster.
108 ** inline constructors are capable of dynamic extent allocation
109 (generally on x86 and x86-64, in some cases on other platforms
111 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
113 * optimization: file compiler is now able to coalesce non-circular
114 lists, non-base strings, and bit-vectors. Additionally, constants
115 are never referenced through SYMBOL-VALUE at runtime.
116 * optimization: code defining methods on PRINT-OBJECT (and other
117 generic functions in the COMMON-LISP package) now loads faster.
118 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
120 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
121 fasl is now deleted. (reported by Attila Lendvai)
122 * bug fix: READ-LINE always returned NIL for the last line in files.
123 (reported by Yoshinori Tahara)
124 * bug fix: more accurate disassembly annotations of foreign function
125 calls. (thanks to Andy Hefner)
126 * bug fix: trimming non-simple strings and non-string string
127 designators when the there is nothing to trim works properly.
128 (thanks to James Knight)
129 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
130 (thanks to Travis Cross)
131 * fixed some bugs revealed by Paul Dietz' test suite:
132 ** NIL is a valid function name (regression at 1.0.13.38)
133 ** FILL on lists was missing its return value (regression at 1.0.12.27)
134 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
135 fill pointers properly (regression at 1.0.12.23)
136 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
137 displacement indices properly (regression at 1.0.12.23)
139 changes in sbcl-1.0.17 relative to 1.0.16:
140 * temporary regression: user code can no longer allocate closure
141 variable storage on stack, due to bug 419 without explicitly
142 requesting it. Please consult sbcl-devel for advice if you need to
143 use this feature in the meanwhile.
144 * new feature: runtime argument --control-stack-size can be used to
145 adjust thread default control stack size.
146 * enhancement: improved TIME output
147 ** all times are reported using the measured accuracy (milliseconds
148 for real and GC times, microseconds for everything else.)
149 ** processor cycle counts on x86 and x86-64.
150 ** interpreted forms are counted for both evaluator modes.
151 ** number of lambdas converted by the compiler is reported.
152 ** CPU percentage report (computed from real and total run time.)
153 ** more comprehensive run time reporting, using a condenced format
154 ** interperted form, lambda, and page fault counts are omitted
156 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
158 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
159 * optimization: two argument forms of LAST are upto ~10% faster
160 in normal SPEED policies.
161 * optimization: NCONC no longer needs to heap cons its &REST list
162 in normal SPEED policies.
163 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
165 * bug fix: UNION and NUNION work with :TEST-NOT once more,
166 regression since 1.0.9.1. (thanks to Eric Marsden)
167 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
168 since 1.0.15.36. (thanks to Paul Khuong)
169 * bug fix: LAST when always returned the whole list when given a bignum
170 as the second argument.
171 * bug fix: dynamic extent allocation of nested lists and vectors
172 could leak to otherwise accessible parts.
173 * bug fix: invalid optimization of heap-allocated alien variable
175 * bug fix: fasl header checking is less vulnerable to different
176 platform word lengths.
177 * bug fix: more correct assembler syntax for GNU binutils
178 2.18.50.0.4 support. (thanks to Marijn Schouten)
179 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
181 * bug fix: the fopcompiler can handle LOCALLY forms (with no
182 declarations) successfully. (reported by Attila Lendvai)
184 changes in sbcl-1.0.16 relative to 1.0.15:
185 * minor incompatible change: revert the changes to sb-posix's error
186 signaling added in 1.0.14.
187 * minor incompatible change: change PROBE-FILE back to returning
188 NIL whenever we can't get a truename, as was the case before 1.0.14.
189 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
190 inherits from ERROR instead of just CONDITION.
191 * new feature: SB-INTROSPECT can provide source locations for instances
192 as well. (thanks to Tobian Ritterweiler)
193 * optimization: binding special variables now generates smaller code
194 on threaded platforms.
195 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
196 and cases where no :TEST is given but the compiler can infer that
197 the element to search is of type (OR FIXNUM (NOT NUMBER)).
198 * optimization: better LOGNOT on fixnums.
199 * optimization: modular arithmetic for a particular requested width
200 is implemented using a tagged representation unless a better
201 representation is available.
202 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
203 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
204 for wellformedness and returns a specialized vector. (reported by
205 Francois-Rene Rideau)
206 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
207 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
208 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
209 unscheduling timer at the same time as another timer fires.
210 * bug fix: don't reschedule timers for dead threads.
211 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
212 * bug fix: copying output from RUN-PROGRAM to a stream signalled
213 bogus errors if select() was interrupted.
214 * enhancement: add support for fcntl's struct flock to SB-POSIX.
216 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
217 * enhancement: cleaner backtraces for interactive interrupts, as
218 well as other cases where the interesting frames used to be
219 obscured by interrupt handling frames.
220 * enhancement: untracing a whole package using (UNTRACE "FOO") is
221 now supported, and tracing a whole package using (TRACE "FOO") now
222 traces SETF-functions as well.
223 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
224 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
225 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
226 * unreadably printed representation of hash-tables now includes
228 * bug fix: partially fixed #188: type propagation from assignments
229 is now more efficient.
230 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
231 'DOUBLE-FLOAT) are not flushable.
232 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
233 full address of the object, and none of the tag bits.
234 * bug fix: readably printing hash-tables now respects other printer
235 control variables. (reported by Cedric St-Jean)
236 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
237 keyword with MAKE-HASH-TABLE.
238 * bug fix: export SB-POSIX:MKSTEMP.
239 * bug fix: SORT was not interrupt safe.
240 * bug fix: XREF accounts for the last node of each basic-block as
242 * bug fix: MAKE-INSTANCE optimizations interacted badly with
243 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
244 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
245 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
246 create obsolete instances in the case of redefinition or
247 obsoletion of a superclass. (thanks to Andy Hefner)
248 * bug fix: Support for the Alpha architecture has been revived; it had
249 suffered somewhat from lack of maintenance since sbcl-1.0.
250 * improvements to the Windows port:
251 ** The system detects the codepage to use at startup, instead of
252 using the value from the saved core. (thanks to Kei Suzuki)
254 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
255 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
256 (see documentation for details.)
257 * revived support for OpenBSD (contributed by Josh Elsasser)
258 * partially fixed bug #108: ROOM no longer suffers from occasional
259 (AVER (SAP= CURRENT END)) failures.
260 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
261 bodies no longer cause a WARNING to be signalled. (reported by
263 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
264 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
265 the bug in TRUNCATE.) (reported by Michael Weber)
266 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
267 no samples. (reported by Andy Hefner)
268 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
269 no longer appear as (NIL ...) frames in backtraces.
270 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
271 is now actually exported from SB-EXT as documented. (reported by
273 * bug fix: sb-aclrepl now correctly understands how to inspect
274 single-floats on 64-bit platforms where single-floats are not boxed.
275 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
276 yet been finalized. (reported by Levente Meszaros)
277 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
278 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
279 SBCL-specific optimize qualities.
281 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
282 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
283 an executable in the search path, and does so in the child
284 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
285 been removed; it can be found in the CVS history, for somebody who
286 needs that search behavior (see the manual).
287 * minor incompatible change: compiler policy re. weakening type
288 checks has changed: now type checks are weakened only if SAFETY < 2
290 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
291 unparsing of directory pathnames as files. Analogously,
292 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
293 filename to parse into a directory pathname.
294 * enhancement: implicit generic function creation now signals a
295 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
296 users can bind handlers for and muffle around calls to LOAD.
297 * enhancement: RUN-PROGRAM allows unicode arguments and environments
298 to be used (using the default stream external format), and allows
299 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
300 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
301 strings and vectors whose element-type or simplicity is not fully
302 known at compile-time.
303 * optimization: STRING-TRIM and related functions no longer allocate
304 a new string when no trimming needs to be performed. These functions
305 are also faster than before when the input string has been declared
307 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
308 * optimization: READ-LINE is significantly faster for files containing
310 * optimization: non-open coded uses of character comparison operators
311 (e.g. char=) no longer cons when called with more than one parameter
312 on platforms supporting dynamic-extent allocation.
313 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
314 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
315 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
317 * bug fix: some sequence functions elided bounds checking when
319 * bug fix: too liberal weakening of union-type checks when SPEED >
321 * bug fix: more bogus fixnum declarations in ROOM implementation
324 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
325 * new feature: MAKE-HASH-TABLE now experimentally accepts a
326 :SYNCHRONIZED argument, which makes the hash-table safe for
327 concurrent accesses (but not iteration.) See also:
328 SB-EXT:WITH-LOCKED-HASH-TABLE, and
329 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
330 * optimization: CONCATENATE on strings is an order of magnitude faster
331 in code compiled with (> SPEED SPACE).
332 * optimization: SUBSEQ is ~50% faster on lists.
333 * bug fix: bug 417 fixed -- source location reporting is now more robust.
334 * bug fix: SUBSEQ on a list will now correctly signal an error if if
335 END is smaller then START.
336 * bug fix: SB-PROFILE will no longer report extra consing for nested
337 calls to profiled functions.
338 * bug fix: ROOM implementation had bogus fixnum declarations which
339 could cause type-errors when calling ROOM on large images.
340 * bug fix: if file compilation is aborted, the partial fasl is now
341 deleted, and COMPILE-FILE returns NIL as the primary value.
342 * bug fix: number of thread safety issues relating to SBCL's internal
343 hash-table usage have been fixed.
344 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
345 be returned from its body when the values were being returned
346 using unknown-values return convection and the W-P-O was wrapped
347 inside an UNWIND-PROTECT.
348 * bug fix: sb-posix should now compile again under Windows, enabling
351 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
352 * incompatible change: hash-table accessor functions are no longer
353 automatically protected by locks. Concurrent accesses on the same hash-table
354 from multiple threads can give inconsistent results or even corrupt the
355 hash-table completely. Multi-threaded applications should do their own
356 locking at the correct granularity. In the current implementation it is
357 still safe to have multiple readers access the same table, but it's not
358 guaranteed that this property will be maintained in future releases.
359 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
360 and will signal an error at runtime.
361 * enhancement: SB-THREAD package now exports a semaphore interface.
362 * enhancement: CONS can now stack-allocate on x86 and
363 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
365 * enhancement: nested lists can now be stack allocated on
366 platforms providing stack allocation support.
367 * enhancement: dynamic-extent support has been extended to support
368 cases where there are multiple possible sources for the stack
370 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
371 if the mutex is uncontested on Linux.
372 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
373 as specified by the CLHS. (thanks to Tobias Rittweiler)
374 * bug fix: NaN comparison now works on x86-64.
375 * bug fix: CLOSE :ABORT T on a stream with pending output now
377 * bug fix: instances of non-standard metaclasses using standard
378 instance structure protocol sometimes missed the slot type checks
380 * bug fix: known functions can be inlined in high-debug code.
382 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
383 * minor incompatible change: the MSI installer on Windows no longer
384 associates .lisp and .fasl files with the installed SBCL.
385 * minor incompatible change: :UNIX is no longer present in *FEATURES*
386 on Windows. (thanks to Luis Oliviera)
387 * new feature: SB-CLTL2 contrib module now implements
388 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
389 * optimization: scavenging weak pointers is now more efficient,
390 requiring O(1) instead of O(N) per weak pointer to identify
391 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
392 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
393 method bodies using constant slot-names when the first argument is
394 a specializer parameter for the method.
395 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
396 names, when the class of the instance is a direct instance
397 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
398 as slow as the constant slot-name case.)
399 * optimization: member type construction is now O(N) instead
401 * optimization: UNION and NUNION are now O(N+M) for large
402 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
404 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
405 now more readable in environments like Slime which display it.
406 (thanks to Tobias C. Rittweiler)
407 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
408 was able to infer the correct argument type for the object on which
409 the CAS operation was being performed.
410 * bug fix: copy propagation interfered with parallel assignment
411 semantics in local calls. (reported by Paul Khuong)
412 * bug fix: the signed modular fixnum shift compiled to wrong code on
413 x86 and x86-64. (spotted by a slight modification to some of
416 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
417 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
418 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
419 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
421 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
422 and generic function now print the object identity for anonymous
423 instances. (thanks to Attila Lendvai)
424 * enhancement: as an extension to MOP, SBCL now supports SETF of
425 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
426 (thanks to Attila Lendvai)
427 * enhancement: sb-cover has an alternate annotation mode which puts
428 the form annotations at the car of the form, instead of annotating
429 it completely. The benefit of this mode is that it shows better
430 which forms were instrumented by the compiler.
431 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
432 by printer control variables. (reported by Dan Corkill)
433 * bug fix: system leaked memory when delayed output was performed by
434 the OS in smaller chunks then expected. (thanks to David Smith)
435 * bug fix: system leaked memory when file streams were not closed
437 * bug fix: large objects written to slow streams that were modified
438 after the write could end up with the modified state written to
439 the underlying file descriptor.
440 * bug fix: multiple threads operating in parallel on the same stream
441 could cause buffer-overflows.
442 * bug fix: source location information is stored correctly
443 (broken since 1.0.6). This bug would generally show up as the
444 Slime debugger highlighting the wrong form when the sldb-show-source
446 * bug fix: Branch forms are again annotated as branches in the sb-cover
448 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
449 on x86-64. (reported by Gregory Vanuxem)
450 * bug fix: EQUALP could return wrong results for structures with raw
451 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
452 word). (reported by Vjacheslav Fyodorov)
453 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
456 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
457 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
458 atomic compare-and-swap operations on threaded platforms.
459 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
460 allows assigning a global minimum value to optimization qualities
461 (overriding proclamations and declarations).
462 * enhancement: closed over variables can be stack-allocated on x86
464 * performance bug fix: GETHASH and (SETF GETHASH) are once again
466 * optimization: slot definition lookup is now O(1). This speeds up
467 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
468 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
469 * optimization: ASSOC and MEMBER can now be open-coded for all
470 combinations of keyword arguments when second argument is constant
471 and SPEED >= SPACE. In other cases a specialized version is
473 * bug fix: using obsoleted structure instances with TYPEP and
474 generic functions now signals a sensible error.
475 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
476 (reported by Kristoffer Kvello)
477 * bug fix: backtrace construction is now more careful when making
478 lisp-objects from pointers on the stack, to avoid creating bogus
479 objects that can be seen by the GC.
480 * bug fix: defaulting of values in contexts expecting more than 7
481 variables now works on x86-64. (reported by Christopher Laux)
482 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
484 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
485 as the property-list of a symbol.
486 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
487 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
488 situations requested, are once again file-compileable. (reported
491 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
492 * MOP improvement: support for user-defined subclasses of
493 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
494 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
495 the expansion of DEFMETHOD, is responsible for generating a form
496 which creates a list of specializers when evaluated. Additional
497 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
498 debugging and introspective support.
499 * minor incompatible change: the (unsupported) spinlock interface
500 has changed: free spinlock now has the value NIL, and a held spinlock
501 has the owning thread as its value.
502 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
503 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
505 * enhancement: name of a socket-stream is now "a socket" instead of
507 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
508 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
509 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
510 for generic functions. (Thanks to Tobias C. Rittweiler)
511 * optimization: bignum printing speed has been improved by 20-40%
512 (depending on the bignum size.)
513 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
515 * bug fix: the cache used by the CLOS to store precomputed effective
516 methods, slot offsets, and constant return values is now thread and
518 * bug fix: generic function dispatch function updating is now thread
519 and interrupt safe (in the sense that the known issues have been
521 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
522 * bug fix: interning EQL-specializers is now thread and interrupt safe.
523 * bug fix: asdf systems with dependencies to the SB-POSIX or
524 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
525 * bug fix: interrupt safety of applicable method computation has been
528 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
529 * new contrib: sb-cover, an experimental code coverage tool, is included
531 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
532 significantly faster.
533 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
534 produce more efficient code on x86-64 if the compiler can determine
535 that (+ INDEX <constant>) does not require a bounds check and FOO
536 has an element type at least 8 bits wide.
537 * enhancement: a new, experimental synchronous timeout facility is
538 provided. Refer to SB-SYS:WITH-DEADLINE for details.
539 * enhancement: when a symbol name conflict error arises, the
540 conflicting symbols are always printed with a package prefix.
541 (thanks to Kevin Reid)
542 * enhancement: stepping is now once again supported on the SPARC and
543 MIPS platforms. (It is also now more likely to work on CheneyGC
545 * enhancement: sb-sprof can now also track and report accurate call
547 * bug fixes: the treatment of non-standard subclasses of
548 SB-MOP:SPECIALIZER is more correct.
549 * incompatible change: PURIFY no longer copies the data from the
550 dynamic space into the static and read-only spaces on platforms
551 that use the generational garbage collector
552 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
554 * bug fix: GC race condition occasionally resulting in crashes with
555 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
557 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
559 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
560 a STYLE-WARNING to be signalled (regression from 1.0.4.)
561 * bug fix: an asynchronous interrupt could previously leave the
562 system running with GC inhibited.
563 * bug fix: a DECLARE form evaluated at top-level now causes an error
564 rather than silently (or verbosely) returning NIL.
565 * bug fix: trying to dissassemble functions compiled at high DEBUG could
566 result in a error being signalled due to source form lookup errors.
567 (reported by Peter Graves)
569 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
570 * incompatible change: removed writer methods for host-ent-name,
571 host-ent-addresses -- changing the values did not update the DNS
573 * minor incompatible change: changed experimental JOIN-THREAD interface
574 * documentation: the manual now lists reader and writer methods
575 in class slot documentation sections. (thanks to Richard M Kreuter)
576 * documentation: unwinding from asyncronous events has been
577 documented as unsafe.
578 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
579 in multithreaded application code.
580 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
581 platforms. (thanks to James Anderson for the optimization hint)
582 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
584 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
585 variants no longer cons.
586 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
587 their NOT- variants no longer cons.
588 * optimization: EQUAL hash tables no longer use SXHASH for objects
589 of all data types, but instead use an EQL hash for types for which
590 EQUAL is the same as EQL.
591 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
592 are significantly faster.
593 * optimization: new STRING-OUTPUT-STREAM implementation is much
594 faster for large outputs and conses 30% less on average.
595 * enhancement: XREF information is now collected for references made
596 to global variables using SYMBOL-VALUE and a constant argument.
597 * enhancement: SIGINT now causes a specific condition
598 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
599 * bug fix: FILE-POSITION used to signal an error in some cases where
600 ANSI requires it to return NIL.
601 * bug fix: ADJUST-ARRAY is now interrupt-safe.
602 * bug fix: adding and removing fd-handlers is now interrupt-safe.
603 * bug fix: inlined calls to C now ensure 16byte stack alignment on
605 * bug fix: bad type declaration in the CLOS implementation has
606 been fixed. (reported by James Anderson)
607 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
608 (thanks to Lutz Euler)
609 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
610 required by the CLHS. (reported by Samium Gromoff)
611 * bug fix: dead unbound variable references now signal an error.
612 (reported by Marco Monteiro)
613 * bug fix: / with an unused value was being deleted in safe code.
614 (thanks to Marco Monteiro and Kevin Reid)
615 * bug fix: number of characters that can be written onto a single
616 line in a file is unlimited.
617 * bug fix: some GC deadlocks caused by asynchronous interrupts have
618 been fixed by inhibiting interrupts for when GC is disabled.
619 * bug fix: some interrupt safety issues with GETHASH, (SETF
620 GETHASH), CLRHASH and REMHASH have been fixed.
621 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
622 specifier no longer causes infinite recursion.
623 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
624 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
625 * bug fix: an &environment argument with the correct variable information
626 is passed to macros that are expanded during byte compilation.
627 (reported by Samium Gromoff)
628 * bug fix: a logic error was causing the hash function for bignums to
629 have excessive amounts of collisions. (reported by Faré Rideau)
630 * bug fix: modifying the contents of an array could change the return
631 value of SXHASH on that array, which is only allowed for strings
632 and bit vectors. (bug introduced in 0.9.16)
633 * improvement: the x86-64/darwin port now passes all tests (except
634 for the debugger tests) but should still be considered
635 experimental until this is fixed.
636 * improvement: a style-warning is signaled for CASE (etc) clauses with
637 duplicate keys. (thanks to Kevin Reid)
638 * improvement: macos/x86 and macos/x86-64 now use mach exception
639 handlers for dealing with illegal instructions (for trapping and
640 error handling) and memory protection violations (for GC).
642 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
643 * new platform: experimental support for x86-64/darwin (MacOS).
644 * incompatible change: the thread-safe (on most platforms) getaddrinfo
645 and getnameinfo sockets functions are used instead of gethostbyaddr
646 and gethostbyname, on platforms where the newer functions are available.
647 As a result, the ALIASES field of HOST-ENT will always be NIL on these
649 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
650 don't print the startup banner, but behave as if --noinform was passed
651 as a command line argument. (thanks to Kevin Reid)
652 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
653 * optimization: code using alien values with undeclared types is much faster.
654 * optimization: the compiler is now able to open code SEARCH in more cases.
655 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
656 * bug fix: using standardized COMMON-LISP special variables as loop
657 variables no longer signals bogus package lock violations. (reported
659 * bug fix: declaring local loop variables to be of a range-limited type
660 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
661 (reported by Andras Simon)
662 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
663 bugs remain on x86-64.)
664 * bug fix: the #= and ## reader macros now interact reasonably with
665 funcallable instances.
666 * bug fix: type-checks for function arguments were compiled using the
667 compiler policy settings of the wrong lexical environment (in 1.0.2
669 * bug fix: SHADOW accepts characters as string designators, as required
670 by the spec (thanks to Eric Marsden)
671 * bug fix: fixed GC safety issues when foreign functions are called with
672 non-base strings as arguments
673 * bug fix: more consistent error output for fatal-compiler-warnings, like
675 * bug fix: functions with proper names were showing up as NIL in
676 backtraces (reported by Edi Weitz, regression in 1.0.2)
678 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
679 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
680 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
681 produce more efficient code on the x86 if the compiler can determine
682 that (+ INDEX <constant>) does not require a bounds check and FOO
683 has an element type at least 8 bits wide.
684 * bug fix: references to undefined variables are handled the same way
685 in toplevel forms as in the normal compiler
686 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
688 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
689 (thanks to Jon Buller)
690 * improvement: faster compilation times for complex functions
691 * improvement: added readlink support to SB-POSIX (thanks to Richard
694 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
695 * improvement: experimental support for mach exception handling on
696 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
698 * improvement: support for GBK external format.
699 (thanks to Chun Tian (binghe))
700 * improvement: the debugger now displays variables that have been closed
701 over, in code compiled with (DEBUG 2) or higher
702 * improvement: support for executable cores on NetBSD (thanks to
704 * new feature: added a RESTART-FRAME debugger command
705 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
706 be used to provide an implementation for FILE-POSITION on Gray streams
707 (thanks to Eric Marsden)
708 * new feature: add syslog, openlog and closelog support to SB-POSIX
709 (thanks to Richard Kreuter)
710 * optimization: the function call overhead in code compiled with
711 a high DEBUG optimization setting is significantly
712 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
713 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
714 (thanks to Tony Martinez)
715 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
716 evaluated once (reported by Kevin Reid)
717 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
718 works again (thanks to Kilian Sprotte)
719 * bug fix: an error is signaled for tagbodies with duplicate tags
720 (thanks to Stephen Wilson)
721 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
722 * bug fix: Win32 port can now handle foreign code unwinding Lisp
723 stack frames from alien callbacks.
724 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
725 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
726 65k pages (thanks to David Woodhouse)
727 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
729 changes in sbcl-1.0.1 relative to sbcl-1.0:
730 * new platform: FreeBSD/x86-64, including support for threading.
731 * new feature: the compiler stores cross-referencing information
732 about function calls (who-calls), macroexpansion (who-macroexpands)
733 and special variables (who-binds, who-sets, who-references) for code
734 compiled with (< SPACE 3). This information is available through the
735 sb-introspect contrib.
736 * new feature: users may subclass SEQUENCE, and have instances of
737 these classes interoperate with standard Common Lisp functions if
738 a number of methods are defined. (This feature is experimental
739 and the interface subject to change based on feedback from SBCL
740 users and the general community)
741 * improvement: sb-sprof traces call stacks to an arbitrary depth on
742 x86/x86-64, rather than the previous fixed depth of 8
743 * improvement: another pthread back-end of mutex "pthread-futex".
744 * bug fix: non-ascii command-line arguments are processed correctly
745 (thanks to Yaroslav Kavenchuk)
746 * bug fix: non-required arguments were not passed correctly when a method
747 defined using DEFMETHOD was called from a mop-generated method using
748 CALL-NEXT-METHOD (reported by Pascal Costanza)
749 * bug fix: recursion is now permitted in accessors through
750 SLOT-UNBOUND. (reported by Pascal Costanza)
751 * bug fix: an error was signaled at startup if the HOME environment
752 variable was defined, but had an empty value (reported by Peter Van Eynde)
753 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
754 signal a PROGRAM-ERROR, not a BUG.
755 * bug fix: SB-POSIX:READDIR works when built with large file support.
756 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
758 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
759 for better automatic indentation support. (thanks to Matt Pillsbury)
760 * optimization: loading generic functions no longer takes O(n^2) time,
761 proportional to the amount of methods in the generic function
762 (reported by Todd Sabin and Jeremy Brown)
763 * optimization: the FIND and POSITION family of sequence functions
764 are significantly faster on arrays whose element types have been
766 * improvements to the Windows port:
767 ** Intermittent heap corruption problems have been fixed. (thanks
768 to Alastair Bridgewater)
769 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
771 ** Lisp is able to unwind foreign exception frames from alien
772 callbacks. (thanks to Alastair Bridgewater)
774 changes in sbcl-1.0 relative to sbcl-0.9.18:
775 * improvement: experimental support for threading on FreeBSD/x86.
776 (thanks to NIIMI Satoshi)
777 * improvement: runtime option --dynamic-space-size can be used
778 to set the size of the dynamic space reserved on startup.
779 * improvement: floating point modes in effect are now saved in
780 core, and restored on startup.
781 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
782 startup, not time since first call to GET-INTERNAL-REAL-TIME.
783 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
784 threads are not running after *SAVE-HOOKS* have run.
785 * improvement: writes to CLOS instance slots are type-checked in code
786 compiled with (SAFETY 3)
787 * improvement: floating-point exception handling on FreeBSD (thanks to
789 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
790 (thanks to Zach Beane)
791 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
793 * improvement: added support for the Shift-JIS external format.
794 (contributed by NIIMI Satoshi)
795 * improvement: callbacks are supported on Linux/PPC. (thanks to
797 * bug fix: compiler bug triggered by a (non-standard) VALUES
798 declaration in a LET* was fixed. (reported by Kaersten Poeck)
799 * bug fix: file compiler no longer confuses validated and already
800 dumped structurres. (reported by Kaersten Poeck)
801 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
802 fill-pointer signals a type-error as required. (thanks to
804 * bug fix: disassemly of funcallable instances works.
805 * bug fix: single stepping on PPC.
806 * bug fix: fix thread-safety problems in the type system (generally
807 manifesting as nonsensical errors like "STRING is a bad type specifier
808 for sequences" or "The value 1 is not of type FIXNUM")
809 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
810 (reported by Josip Gracin)
811 * bug fix: an error is signaled for attempts to displace arrays with
812 incompatible element types (thanks to Mario Mommer)
813 * bug fix: more correct handling of wide characters in debug info
814 (bug reported by Attila Lendvai and fixed by Juho Snellman)
815 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
816 and don't cause extra consing
817 * optimization: MAP and MAP-INTO are significantly faster on vectors
818 whose elements types have been declared.
819 * Improvements to SB-SPROF:
820 ** Support for allocation profiling
821 ** Reduced profiling overhead, especially for long profiling runs
822 * Improvements to the Windows port:
823 ** floating point exceptions are now reported correctly.
824 ** stack exhaustion detection works partially.
825 ** more accurate GET-INTERNAL-REAL-TIME.
826 ** better RUN-PROGRAM behaviour in case of errors in the child
828 ** PROBE-FILE now simplifies pathnames correctly.
829 ** DIRECTORY now works correctly with :WILD-INFERIORS.
830 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
831 1st 1970 (although time timezone data will be unreliable).
832 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
834 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
835 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
836 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
838 * bug fix: two potential GC deadlocks affecting threaded builds.
839 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
840 returns T (reported by Anton Kazennikov)
841 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
842 with non-variable places
843 * bug fix: remove a race condition in the setting of
844 funcallable-instance functions, this should make threaded CLOS
845 code more stable against memory faults.
846 * bug fix: corruption of specials when unbinding is interrupted by an
847 asynchronous unwind (reported by Hannu Koivisto)
848 * improvement: the debugger will now also display local variables that
849 are only used once, for code compiled with a DEBUG optimization quality
852 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
853 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
854 * incompatible change: External-format support for FFI calls. The
855 SB-ALIEN:C-STRING no longer implies an ASCII
856 external-format. Instead the string is subject to external-format
857 conversion. Additionally return values of type SB-ALIEN:C-STRING
858 are by default of type (SIMPLE-ARRAY CHARACTER), not
859 SIMPLE-BASE-STRING. For an alien type that behaves like the old
860 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
861 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
862 * incompatible change: SB-EXT package no longer contains the
863 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
864 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
866 * incompatible change: the single-stepper is no longer available
867 on Alpha, Mips and Sparc platforms.
868 * minor incompatible change: the direct superclasses of
869 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
870 not (STANDARD-OBJECT FUNCTION). This makes the
871 class-precedence-lists of GENERIC-FUNCTION and
872 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
874 * minor incompatible change: the default stream external format on
875 non-unicode SBCL is no longer detected from the locale, but is always
877 * new feature: Add a version of evaluator that uses an interpreter instead
878 of the compiler. EVAL still uses the compiler by default, to switch it
879 to use the interpreter, set the value of the variable
880 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
881 * minor incompatible change: the single-stepper REPL has been merged
882 with the normal debugger (see the "Stepping" heading of the debugger help
883 for more details). The debugger command STEP will no longer switch
884 to the single-stepper REPL.
885 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
886 for a type now works.
887 * bug fix: loading of default sysinit file works. (thanks to Leonid
889 * bug fix: better detection of circularities in the file-compiler.
890 (reported by Marco Monteiro)
891 * bug fix: the CL pathname functions now work with files that have
892 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
893 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
894 systems with Unix98 pty semantics.
895 * bug fix: ASDF-INSTALL will now work with bsd tar.
896 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
898 * bug fix: timers expiring in dead threads no longer cause a
899 type-error (reported by Paul "Nonny Mouse").
900 * bug fix: thanks to more lightweight single-stepper instrumentation,
901 code compiled with (DEBUG 3) will compile and execute significantly faster,
902 and will have more accurate type-inferencing than before
903 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
904 whose bindings are modified
905 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
906 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
907 ** replace dummy implementations of CL:MACHINE-INSTANCE and
908 CL:SOFTWARE-VERSION with proper version
910 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
911 * feature: implemented the READER-METHOD-CLASS and
912 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
913 as specified by AMOP.
914 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
916 * optimization: faster LOGCOUNT implementation on x86 and x86-64
917 (thanks to Lutz Euler)
918 * optimization: hashing of general arrays and vectors has been
919 improved. (reported by Any Fingerhut)
920 * enhancement: SB-INTROSPECT is now able to find definitions of
921 profiled functions. (thanks to Troels Henriksen)
922 * enhancement: compiler-macro expansion applies now to FUNCALL forms
923 as well, allowing compiler-macros for SETF-functions to expand.
924 * enhancement: step-instrumentation no longer wraps known
925 single-value functions with multiple-value context, allowing
926 better type inference.
927 * fixed bug #337: use of MAKE-METHOD in method combination now works
928 even in the presence of user-defined method classes. (reported by
929 Bruno Haible and Pascal Costanza)
930 * fixed bug #339(c): if there are applicable methods not part of any
931 long-form method-combination group, call INVALID-METHOD-ERROR.
932 (reported by Bruno Haible)
933 * fixed bug #361: the :FUNCTION initarg in the protocol for
934 initialization of methods can now be used to override
935 internally-produced optimized functions. (reported by Bruno
937 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
938 system-provided lambda expression no longer cause warnings about
939 unbound #:|pv-table| symbols.
940 * bug fix: improved the handling of type declarations and the
941 detection of violations for keyword arguments with non-constant
943 * bug fix: potentially erronous calls to PATHNAME and
944 MERGE-PATHNAMES were being flushed in some cases.
945 (reported by Richard Kreuter)
946 * bug fix: compiled calls to TYPEP were mishandling obsolete
947 instances. (reported by James Bielman and Attila Lendvai)
948 * bug fix: format strings with ~> without matching ~< no longer
949 trigger an AVER, but signal an understandable error instead.
950 (reported by Antonio Martinez)
951 * bug fix: specifying an output-file without a pathname-type for
952 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
953 of input-file instead of "fasl". (reported by Robert Dodier)
954 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
955 (reported by James Y Knight).
956 * bug fix: compiler-macros-function did not consider the environment
957 argument for shadowing by local functions.
958 * bug fix: compiler-macros expansion was inhibited by local INLINE
960 * bug fix: inline expansions of known functions were subject to
961 step-instrumentation in high debug policies, leading to problems
963 * bug fix: compiler failed to differentiate between different CONS
965 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
966 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
967 * bug fix: #368: incorrect use of expressed vs. upgraded array
969 * bug fix: #306a: more precise unions of array types.
970 * thread-safety improvements:
971 ** CONDITION-WAIT could return early on Linux, if the thread was
972 interrupted and subsequently continued with SIGCONT.
973 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
975 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
976 * added support for the ucs-2 external format. (contributed by Ivan
978 * minor incompatible change: pretty printing of objects of type
979 (cons symbol) is, in the default pprint-dispatch-table, now
980 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
982 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
983 called later in a class's lifetime, possibly as late as when the
984 first instance of the class is created. Previously,
985 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
986 class became finalizeable.
987 * fixed bug: FILE-POSITION sometimes returned inconsistent results
988 for multibyte external-format streams. (thanks to "vbzoli")
989 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
990 with :ALLOCATION :CLASS inherited from superclasses of the
992 * fixed bug: anonymous classes can now be created using the :NAME
993 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
994 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
995 * fixed bug: core-files saved with :EXECUTABLE T can again be
996 executed when SBCL_HOME isn't set. (reported by James Knight)
997 * fixed bug: toplevel LOCALLY forms with declarations could
998 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
999 * fixed bug: printing from several different threads using different
1000 values of *print-case* could cause invalid output, due to
1001 some internal special variables of the printer not being bound
1002 thread-locally (reported by Max Mikhanosha)
1003 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1004 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1005 (reported by Pascal Costanza)
1006 * fixed bug: FINALIZE-INHERITANCE is called from
1007 REINITIALIZE-INSTANCE on classes when the class has previously
1008 been finalized, as required by AMOP.
1009 * minor code generation optimizations:
1010 ** better register allocation in CLOS dispatching functions
1011 ** overflow detection when coercing signed bytes to fixnums on x86-64
1012 ** is now implemented with one IMUL instruction instead of three shifts
1013 ** more efficient bit-vector access on x86 and x86-64
1014 ** more efficient access to raw structure slots on x86 and x86-64
1015 * fixed some bugs revealed by Paul Dietz' test suite:
1016 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1017 return its argument.
1019 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1020 * feature: thread support on Solaris/x86, and experimental thread support
1022 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1024 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1025 default method for SLOT-UNBOUND.
1026 * minor incompatible change: prevent the user from specializing the
1027 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1028 somewhat counter to the intent of the protocol, I (CSR) think, and
1029 additionally it just doesn't work in SBCL as currently
1030 implemented, thanks to optimizations (that are always valid for
1031 the other three SLOT-VALUEish functions, but not for the setter).
1032 * minor incompatible change: the :SB-LDB feature is now enabled by
1033 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1034 the low-level debugger.
1035 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1036 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
1037 down to an SB-SYS:FD-STREAM, allowing direct communication in
1038 more cases. Temporary files and pipes are still used as a fallback
1040 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1041 on the non-reentrant C functions localtime(3) and gmtime(3).
1042 * bug fix: global optimization policy was not visible in LOCALLY and
1044 * bug fix: class objects can be used as specializers in methods.
1045 (reported by Pascal Costanza)
1046 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1047 with a type error. (reported by blitz_ on #lisp)
1048 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1049 failed with a type error. (reported by Pascal Bourguignon)
1050 * bug fix: merging pathnames against defaults with :DIRECTORY
1051 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1052 (reported by James Y Knight)
1053 * bug fix: saving large (>2GB) cores on x86-64 now works
1054 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1055 constant index and a (simple-array (signed-byte 32)) array
1056 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1057 error (patch by Robert J. Macomber)
1058 * feature: TIME now displays the amount of run-time spent in GC
1059 * bug fix: The debugger now does a better job of respecting
1060 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1061 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1062 workaround for bug 403.)
1063 * bug fix: floating point exception handling now works on FreeBSD
1064 (thanks to NIIMI Satoshi)
1065 * fixed some bugs revealed by Paul Dietz' test suite:
1066 ** MISC.641: LET-conversion were not supposed to work in late
1068 * improvements to the Win32/x86 port:
1069 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1070 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1072 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1073 * new feature: source path information is generated for macro-expansion
1074 errors for use in IDE's like Slime (thanks to Helmut Eller)
1075 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1076 * bug fix: compiler does not loop forever on an invalid type in
1078 * improvement: compilation of most CLOS applications is significantly
1080 * optimization: added a limited bytecode compiler for simple toplevel
1081 forms, speeding up compilation and FASL loading
1082 * bug fix: the statistical profiler now properly distinguishes anonymous
1085 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1086 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1087 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1088 into subclasses of the finalized class. Now user calls to
1089 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1090 system return before any subclasses are finalized.
1091 * minor incompatible change: The reader no longer ignores errors
1092 regarding non-existent packages in #+ and #- feature tests.
1093 * new feature: command line options --no-sysinit, --no-userinit to
1094 inhibit loading the corresponding init files
1095 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1096 for sending data through UDP sockets (thanks to François-René Rideau)
1097 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1098 error is signalled instead (thanks to François-René Rideau)
1099 * minor incompatible change: Error signalling behaviour of lexical
1100 operations violating package locks has changed slightly. Refer to
1101 documentation on package locks for details.
1102 * enhancement: EVAL can process IF-expressions without resorting to the
1104 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1105 constant-folded properly due to missing out-of-line functions.
1106 (reported by Mika Pihlajamäki)
1107 * bug fix: LISTEN sometimes returned T even in cases where no data was
1108 immediately available from the stream
1109 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1110 were reversed. (reported by Levente Mészáros)
1111 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1112 when given a vector displaced to an adjustable array. (reported
1114 * bug fix: derivation of float boundaries from numbers outside the
1115 appropriate float range (reported by John Wiseman)
1116 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1118 * bug fix: precomputing cache entries for generic functions with
1119 some subclasses of specializers as yet invalid does not attempt to
1120 fill a cache line with a negative offset. (reported by Levente
1122 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1123 allow condition class objects as arguments to DOCUMENTATION and
1124 (SETF DOCUMENTATION); only find and set documentation for
1125 structure names for the STRUCTURE doc-type. (suggested by Gary
1127 * improvements to the Win32/x86 port:
1128 ** (user-homedir-pathname) and default initialization file
1129 locations now know about the user's "Documents and Settings"
1130 directory (thanks to Yaroslav Kavenchuk)
1131 ** run-program is implemented (thanks to Mike Thomas)
1132 ** sockets support (thanks to Timothy Ritchey)
1133 ** better backtrace support (thanks to Alastair Bridgewater)
1134 ** sb-grovel supported
1135 ** asdf-install and sb-posix work somewhat
1136 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1137 * improvements to the Solaris/x86 port:
1138 ** works on Solaris 11/Solaris Express
1139 ** floating-point exception handling support
1140 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1141 * fixed some bugs revealed by Paul Dietz' test suite:
1142 ** REMOVE-METHOD returns its generic function argument even when
1143 the method is not one of the generic functions' methods.
1144 ** objects declared as MEMBER types can be admissible arguments to
1145 structure accessors.
1146 ** printing characters should simply be printed by the FORMAT ~:C
1148 ** compiler failure when compiling functions with hairy constant
1149 defaults for optional parameters.
1150 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1151 function, which is already optimized.
1153 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1154 * new platform: experimental support for SBCL x86/Darwin, including
1155 MacOS X 10.4.5 on Intel.
1156 * new feature: Unicode character names are now known to the system
1157 (through CHAR-NAME and NAME-CHAR).
1158 * new feature: the filesystem location of SBCL's core file is
1159 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1160 * minor incompatible change: the contrib modules SB-POSIX and
1161 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1162 this change is to make it easier to distribute
1163 location-independent binaries.
1164 * bug fix: as implied by AMOP, standardized classes no longer have
1165 slots named by external symbols of public packages. (reported by
1167 * optimization: calling functions via constant symbols -- as in
1168 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1169 via the function object as in (FUNCALL #'FOO).
1170 * optimization: on x86 and x86-64, the calling convention for the
1171 case of dealing with an unknown number of values has been altered
1172 to be friendlier to the prediction heuristics implemented,
1173 particularly with reference to CALL and RET pairing. (thanks to
1174 Alastair Bridgewater)
1175 * optimization: on x86, the code for access to thread-local symbol
1176 values and binding/unbinding of thread-local symbols is smaller.
1177 (thanks to Alastair Bridgewater)
1178 * enhancement: CONSTANTP is now able to determine constantness of
1179 more complex forms, including calls to constant-foldable standardized
1180 functions and some special forms beyond QUOTE.
1181 * fixed bug: occasional GC crashes on Solaris/x86
1182 * optimization: x86-64 supports stack allocation of results of simple
1183 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1184 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1185 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1186 (thanks to James Knight)
1187 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1188 by the standard (thanks to Stephen Compall)
1190 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1191 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1192 be used for bundling the runtime and the core file into one
1193 executable binary. This feature is not currently supported on all SBCL
1194 platforms. (thanks to James Bielman and NIIMI Satoshi)
1195 * new feature: a generational or ephemeral garbage collector is now
1196 the default on the PowerPC platform (both Linux and Darwin). The
1197 old Cheney (stop and copy) collector is a build-time option.
1198 (thanks to Cyrus Harmon, after Raymond Toy)
1199 * minor incompatible change: the method by which SBCL finds its
1200 contributed modules has changed; it no longer relies on symbolic
1201 links from an $SBCL_HOME/systems directory, but searches directly
1202 in the subdirectories of $SBCL_HOME.
1203 * enhancement: the dynamic heap size on the Linux/PPC platform is
1204 markedly larger, even using the older Cheney garbage collector.
1205 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1206 certain complicated string types. (reported by Gary King)
1207 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1208 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1209 * fixed bug: DOCUMENTATION on structures no longer signals an
1210 error if no structure type of the right name exists. (reported by
1212 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1213 applicable non-standard primary or :AROUND method on
1214 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1215 no longer cause unbound variable errors. (reported by Kevin Reid)
1216 * fixed bug: metacircle resolution in cases where methods have slots
1217 added before the slots from STANDARD-METHOD. (reported by Jean
1219 * fixed bug: the Power PC assembly code for calling into lisp
1220 sometimes computed its return address wrongly (depending on the
1221 15th bit of the address, fixed at link time). This used to
1222 manifest itself in a segmentation violation while building PCL.
1223 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1224 many others over the years)
1225 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1226 the stack pointer (treated as a signed integer) is negative.
1227 (thanks to Peter van Eynde)
1229 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1230 * new platform: experimental support for the Windows operating
1231 system has been added. (thanks to Alastair Bridgewater)
1232 * fixed several bugs in and robustified the PPC FFI (including
1233 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1234 * bug fix: allow non-simple string symbol names (reported by Paul
1236 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1238 * bug fix: saving a core corrupted callbacks on x86/x86-64
1239 * bug fix: closed a loophole in metacircularity detection and
1240 grounding in the PCL implementation of CLOS.
1241 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1242 (reported by tomppa on #lisp)
1243 * bug fix: clear the direction flag on Lisp -> C transitions, as
1244 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1245 (reported by Andrej Grozin and Hendrik Maryns)
1246 * optimization: major improvements to GC efficiency on GENCGC platforms
1247 * optimization: faster implementation of EQUAL
1248 * optimization: emit more efficient opcodes for some common
1249 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1250 * optimization: several other minor code-generation improvements on x86-64
1251 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1253 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1254 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1255 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1256 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1257 by ANSI as a generic function, and for consistency (SETF
1258 GENERIC-FUNCTION-NAME) is treated likewise.
1259 * fixed bug #233.b: make constraint propagation notice when a variable
1260 value is changed after it is referenced but before it is used
1261 * fixed bug #296: no more arbitrary behaviour from filenames with
1262 odd characters as --load arguments. (reported by Adam Warner)
1263 * fixed bug #390: :CHARACTER-SET pathname components now work as
1264 expected. (reported by Tim Daly Jr)
1265 * fixed bug #391: complicated :TYPE intersections in slot
1266 definitions no longer cause an error in PCL internals.
1267 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1268 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1269 returning the number of octets which would be written to the
1270 file-stream. (thanks to Robert J. Macomber)
1271 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1272 arguments to the internal stream functions. (thanks to David
1274 * bug fix: stack exhaustion is now handled on the x86/SunOS
1275 platform. (thanks to Daisuke Homma)
1276 * bug fix: more accurate ROOM results on GENCGC platforms
1277 * optimization: improved type inference for arithmetic-for
1278 index variables in LOOP
1279 * optimization: faster floating-point SQRT on x86-64
1280 * fixed some bugs revealed by Paul Dietz' test suite:
1281 ** DOCUMENTATION returns NIL instead of "" for method combinations
1282 that don't have a docstring
1284 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1285 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1286 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1287 therefore are not customizeable by user code (as seems to be at
1288 least permitted and maybe required by AMOP). As a consolation,
1289 however, the SBCL implementation of these functions now calls
1290 REINITIALIZE-INSTANCE as specified by AMOP.
1291 * bug fix: slot-definition documentation is propagated as per ANSI
1292 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1293 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1294 argument, as do eslotd initialization methods. (from Pascal
1295 Costanza's "Closer" project)
1296 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1297 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1299 * bug fix: it is now possible to have more than one subclass of
1300 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1301 (reported by Bruno Haible, Pascal Costanza and others)
1302 * bug fix: the dependent update protocol now works for generic
1303 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1304 and Pascal Costanza)
1305 * bug fix: condition-class instances corresponding to
1306 DEFINE-CONDITION forms are now created eagerly. (reported by
1307 Kalle Olavi Niemitalo on comp.lang.lisp)
1308 * bug fix: floating point printing is more accurate in some
1309 circumstances. (thanks to Simon Alexander)
1310 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1311 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1312 * bug fix: callbacks on OS X now preserve stack-alignment.
1313 (thanks to Cyrus Harmon)
1314 * enhancement: the x86-64 disassembler is much better at
1315 disassembling SSE instructions. (thanks to Lutz Euler)
1316 * enhancement: CHECK-TYPE on a variable now allows type-inference
1317 (thanks to Vincent Arkesteijn)
1318 * optimization: improved performance of EUC-JP external format.
1319 (thanks to NIIMI Satoshi)
1320 * optimization: performance improvements to IO on file streams of
1321 :ELEMENT-TYPE CHARACTER
1322 * optimization: much faster memory allocation on x86-64
1323 * optimization: faster garbage collections (latency and throughput)
1325 * optimization: faster bignum subtraction and division on x86 and x86-64
1326 (thanks to Lutz Euler)
1327 * optimization: more accurate type-inference for loops that use a
1328 floating point index variable or a negative step.
1330 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1331 * bug fix: add a workaround to SBCL looping infinitely at startup on
1332 Linux kernels with apparently buggy implementations of personality().
1333 (thanks to Svein Ove Aas)
1334 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1335 (thanks to David Lichteblau)
1336 * bug fix: local bindings shadow global symbol macros for
1337 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1338 * optimization: non-open coded uses of numeric comparison operators
1339 (e.g. >) no longer cons when called with more than one parameter
1340 on platforms supporting dynamic-extent allocation.
1341 * enhancement: saving cores with foreign code loaded is now supported
1342 on MIPS/Linux in addition to the previously supported platforms.
1343 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1344 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1345 * bug fix: division by zero in sb-sprof when no samples were collected
1346 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1347 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1348 (thanks to Alexander Kjeldaas)
1349 * new feature: ignoring the return values of destructive functions
1350 like NREVERSE signals a compile-time style-warning.
1351 (thanks to Kevin Reid)
1352 * new feature: the alignment of alien structure fields can be
1353 explicitly specified. (thanks to Cyrus Harmon)
1354 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1355 and dump core on SIGQUIT
1357 ** incompatible change: threads do not inherit values of specials
1358 from their parents (see manual)
1359 ** bug fix: threads stacks belonging to dead threads are freed by the
1360 next exiting thread, no need to gc to collect thread stacks anymore
1361 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1362 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1363 ** bug fix: dynamic variable and thread start related gc lossage
1364 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1366 * fixed some bugs revealed by Paul Dietz' test suite:
1367 ** SUBTYPEP is slightly more accurate on heinously complicated
1368 CONS types where some of the members have uncertain (in the
1369 NIL, NIL sense) type relationships to each other.
1371 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1372 no longer purified unless :PURIFY T is explicitly specified.
1373 ** Non-purified cores are significantly smaller than before
1375 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1376 * new feature: timers based on Zach Beane's excellent timer package
1377 * added support for the following external formats: koi8-u,
1378 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1379 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1380 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1381 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1382 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1383 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1384 * incompatible change: a threaded SBCL will no longer revert to
1385 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1386 * bug fix: interrupts are disabled until startup is complete; no
1387 more sigsegvs when receiving a signal to soon
1388 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1390 * bug fix: add a workaround for the memory randomization features in
1391 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1392 workaround will only be in effect on systems with the proc filesystem
1394 * bug fix: printing objects of type HASH-TABLE signals a
1395 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1397 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1398 have been running for over 50 days. (reported by Gilbert Baumann)
1399 * bug fix: the logic for getting names of functions gets less
1400 confused when confronded with alternate-metaclass
1401 funcallable-instances. (reported by Cyrus Harmon)
1402 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1403 consistent, even on internal alternate-metaclass objects.
1404 * bug fix: flush closure information collected by physical
1405 environment analysis prepass before the main pass. (bug reported
1407 * bug fix: compiler pack phase does not modify a hashtable, which is
1408 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1409 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1410 may be expanded. (reported by Alexander <malishev> on c.l.l)
1411 * bug fix: no more style-warnings when compiling code using LAST
1412 under high-SPEED low-SPACE settings. (reported by David Wallin
1414 * fixed some incompatibilities between SBCL's MOP and the MOP
1416 ** the METAOBJECT class is now implemented;
1417 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1418 STANDARD-OBJECT, as required;
1419 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1420 now compatible (as required by VALIDATE-SUPERCLASS); there
1421 remains a consistency requirement over the presence or absence
1422 of the FUNCTION class in the superclass list of finalized
1423 classes; see the manual for more details;
1424 ** the :AROUND method for COMPUTE-SLOTS on
1425 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1426 requested slot ordering.
1428 ** bug fix: parent thread now can be gc'ed even with a live
1430 ** bug fix: binding a special with PROGV to no value is not
1431 the same as that symbol not having been bound (thanks to
1433 ** bug fix: binding specials is thread safe (thanks to
1435 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1436 and SB-SPROF do not die with 'no handler for signal XX in
1437 interrupt_handle_now(..)' anymore
1438 ** bug fix: WITH-TIMEOUT works with multiple running threads
1439 * fixed some bugs revealed by Paul Dietz' test suite:
1440 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1441 the :method-class keyword argument.
1443 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1444 * new port: the Solaris operating system on x86 processors is now
1445 mostly supported, though some rough edges in the environment
1446 remain. (thanks to Daisuke Homma)
1447 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1448 space for its heap. (thanks to Thiemo Seufer)
1449 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1450 closures. (thanks to Thiemo Seufer)
1451 * minor incompatible change: eof selects abort in the debugger.
1452 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1453 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1455 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1456 deprecated, and will go away in a future revision of SBCL.
1457 * minor incompatible change: GC-ON and GC-OFF are no longer
1458 implemented with a counter, it does not matter how many times gc
1459 is switched on or off
1460 * bug fix: discriminating functions for generic function classes
1461 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1462 make invalid assumptions about method precedence order. (reported
1464 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1465 platforms. (thanks to Thiemo Seufer)
1466 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1467 * bug fix: correct pathname printing with printer escaping is on.
1468 (thanks to Kevin Reid)
1469 * bug fix: complex VOP definitions in "user-space" no longer trigger
1470 package locks. (reported by Zach Beane)
1471 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1472 for funcallable-instance functions, and is no different from
1474 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1475 characters in the current readtable. (reported by Nicholas Neuss)
1476 * bug fix: SUBTYPEP on various CONS types returns more a more
1477 accurate acknowledgment of its certainty.
1478 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1479 lists in some cases. This partially fixes bug 384.
1480 * flush all standard streams before prompting in the REPL and the
1482 * bug fix: signal handling and triggering gc do not conflict
1483 directly anymore, in particular a high frequency sb-sprof does
1484 not prevent gc from running
1485 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1486 approximation for timezone and DST information between the
1487 universal time epoch and the smallest negative 32-bit time_t.
1488 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1489 year 1899 so long as the encoded time is non-negative.
1490 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1491 the correct answer for non-constant rotate amounts when performing
1492 an inline 32-bit rotation.
1494 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1495 there is only one thread in the session
1496 ** bug fix: memory leak for streams created in one thread and
1497 written to in another
1498 ** bug fix: lockup when compiled with gcc4
1499 ** bug fix: race that allows the gc to be triggered when gc is
1501 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1502 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1504 ** bug fix: finished threads are gc'ed properly
1505 * fixed some bugs revealed by Paul Dietz' test suite:
1506 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1507 has arguments with a different set of applicable methods from
1508 the orignal arguments.
1509 ** The type error thrown by MAP now has a correct expected-type
1511 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1512 name a compiled function.
1513 ** Three MISC tests where a large bignum was improperly coerced to
1514 a float that couldn't represent that bignum during type
1515 derivation were fixed.
1516 ** SUBTYPEP can now handle types involving the negation of a
1517 list-form FUNCTION type.
1518 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1519 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1520 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1522 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1523 * New feature: Experimental support for bivalent streams: streams
1524 opened with :element-type :default now allow character and binary
1525 (unsigned-byte 8) I/O
1526 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1527 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1529 * bug fix: no more highly sporadic "couldn't check whether ~S is
1530 readable" when reading a stream and an interrupt hits in the middle
1531 of a select system call
1532 * compiler better recognizes complex arrays (reported by Eduardo
1534 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1535 for variables on SBCL built with linkage-tables. (reported by Luis
1537 * various error reporting improvements.
1538 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1539 (Thanks to Thiemo Seufer)
1540 * bug fix: nested reader invokations work correctly
1541 * bug fix: it is possible to have simultaneous references to foreign
1542 code and foreign data with the same name.
1544 ** added x86-64 support
1545 ** incompatible change: the threading api now works with thread
1546 objects instead of thread ids
1547 ** bug fix: threads are protected from signals and interruption when
1548 starting up or going down
1549 ** bug fix: a race where an exiting thread could lose its stack to gc
1550 ** bug fix: don't halt on infinite error in threads if possible
1551 ** fixed numerous gc deadlocks introduced in the pthread merge
1552 ** bug fix: fixed thread safety issues in read and print
1553 ** bug fix: debugger doesn't hang on session lock if interrupted at
1554 an inappropriate moment
1555 ** bug fix: run-program is now thread safe(r)
1556 ** bug fix: inner with-recursive-lock no longer releases the mutex
1557 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1558 * fixed some bugs revealed by Paul Dietz' test suite:
1559 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1560 EXPECTED-TYPE slots filled.
1561 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1563 ** MAKE-CONDITION accepts classes as type-designators.
1564 ** COMPILE may never return NIL.
1565 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1566 range before calling Unix time functions
1568 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1569 * numerous signal handling fixes to increase stability
1570 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1571 * minor incompatible change: we now correctly canonize default
1572 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1573 as per the MOP, rather than the historical (INITARG INITFUNCTION
1574 INITFORM). (reported by Bruno Haible)
1575 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1576 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1577 for more information.
1578 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1579 pathname is a directory pathname.
1580 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1581 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1583 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1584 :METACLASS argument in addition to a class name. (reported by
1585 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1586 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1587 (reported by Bruno Haible; patch from Gerd Moellmann)
1588 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1590 * bug fix: more cleanups to the floating point exception handling on
1591 x86-64 (thanks to James Knight)
1592 * bug fix: the compiler does not try to constant fold calls of
1593 COERCE and BIT-* functions when they return freshly constructed
1594 objects. (reported by Nikodemus Siivola and Paul Dietz)
1595 * optimization: improved the MIPS versions of generic (in the
1596 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1597 * optimization: direct conversion of (unsigned-byte 32) to floats on
1598 the PowerPC platform.
1599 * optimization: structure instances with raw slots now use less
1600 memory, and probably show better memory locality. (thanks to
1602 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1603 are treated as requests for stack allocation on the x86-64,
1604 Alpha-32, PPC and SPARC platforms.
1605 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1606 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1607 (thanks to Tony Martinez)
1609 ** gcing a dead thread can no longer lead to lockups
1610 ** threads block signals until they are set up properly
1611 ** errno is no longer shared by threads
1612 ** interrupt-thread restores the eflags register on x86
1613 ** fixed some lockups due to gc/thread interaction
1614 * fixed some bugs revealed by Paul Dietz' test suite:
1615 ** invalid dotted lists no longer raise a read error when
1616 *READ-SUPPRESS* is T
1617 ** signal an error if a symbol that names a declaration is used
1618 as the name of a type, or vice versa
1619 ** allow using the (declare (typespec var*)) abbreviation for
1620 (declare (type typespec var*)) with all type specifiers
1621 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1622 ** always return NIL from PPRINT-POP when OBJECT is NIL
1623 ** don't signal errors when pretty-printing malformed LABELS,
1624 FLET or MACROLET forms
1625 ** declarations in a DOLIST body are also in scope for the
1627 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1629 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1632 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1633 * fixed cross-compiler leakages that prevented building a 32-bit
1634 target with a 64-bit host compiler.
1635 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1636 opened with :IF-EXISTS :OVERWRITE.
1637 * fixed bug 281: error for an invalid qualifier in a short-form method
1638 combination method is not signalled until the faulty method is called.
1639 * bug fix: iteration variable type inferrer failed to deal with open
1640 intervals. (reported by Alan Shields)
1641 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1642 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1643 or more runtime options were provided to the sbcl binary.
1644 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1645 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1646 * optimization: there's now a fast-path for fixnum arguments in the
1647 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1648 * optimization: the code generated on x86-64 is more compact thanks
1649 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1650 * bug fix: floating-point exception handling now partly works on
1651 x86-64. (Thanks to James Knight)
1652 * improvement to the MIPS backend from Thiemo Seufer: C-style
1653 64-bit long long arguments and return values to alien functions
1655 * fixed some bugs revealed by Paul Dietz' test suite:
1656 ** the type-error signalled from WARN has a filled-in DATUM slot.
1657 ** the type-error required when a stream is not associated with
1658 a file has the stream as its datum.
1659 ** type-errors on single-floats on x86-64 no longer have
1660 :INVALID-OBJECT as the datum
1661 ** the type-errors signalled for invalid function names now have
1662 a correct expected type
1663 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1664 for structures defined with a :TYPE. Documentation strings for
1665 typed structures are no longer immediately discarded
1666 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1667 broadcast streams and synonym streams. FILE-LENGTH now also works
1668 on broadcast streams.
1670 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1671 * incompatible change: the --noprogrammer option, deprecated since
1672 version 0.7.5, has been removed. Please use the equivalent
1673 --disable-debugger option instead.
1674 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1676 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1677 inoperational for a while now) has been completely removed.
1678 * null lexical environments are now printed as #<NULL-LEXENV>,
1679 significantly reducing the amount of clutter in typical backtraces.
1680 * documentation on weak pointers, finalization, and after GC hooks
1681 has been added to the manual.
1682 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1683 as other specialized array types, is much faster. SUBSEQ and
1684 COPY-SEQ on such arrays have also been sped up.
1685 * optimization: EQL is now more efficient when at least other argument
1686 is known to be of type (OR FIXNUM (NOT NUMBER)).
1687 * fixed bug: the runtime is now less vulnerable to changes in the
1688 size of the SBCL object on OS X, and virtual memory is reserved for
1689 all spaces that need to be at a fixed address.
1690 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1691 * fixed bug: finalizers and after GC hooks that cause consing are now
1693 * fixed bug: compiler error messages and summaries are now printed to
1694 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1695 * fixed inference of the upper bound of an iteration variable.
1696 (reported by Rajat Datta).
1697 * fixed bug 211e: calling local functions with duplicated constant
1698 keyword argument no longer causes a bogus style warning about an
1700 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1701 ftype declaration to be disregarded. (reported by Dave Roberts)
1702 * fixed bug 373: caused by erronous compilation of references to alien
1703 variables in the runtime on ppc/darwin.
1704 * fixed bug 376: CONJUGATE type deriver.
1705 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1706 (reported by Baughn on #lisp)
1707 * a cross-compiler bug on non-x86 platforms has been identified and
1708 fixed. (thanks to Bruno Haible)
1709 * improvements to the MIPS runtime code for increased stability.
1710 (thanks to Thiemo Seufer)
1711 * increased the maximimum compact environment size to allow
1712 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1713 * partial workaround for bug 135: don't name the function we're
1714 calling for hairy cases of EVAL, so as not to accumulate one environment
1715 entry per call to EVAL. (reported by Kevin Reid)
1716 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1717 * optimization: type testing for non-vector arrays should be faster.
1718 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1720 * bug fix: setting 31st element of a bit vector to zero did not work
1722 * bug fix: redefining a class definition which failed due to a
1723 previous accessor / function clash now works (but see BUGS entry
1724 #380 for more problems in this area). (thanks to Zach Beane)
1725 * the long form of DEFINE-METHOD-COMBINATION disables method group
1726 checking when given a single method group with pattern *. (thanks
1728 * on x86 compiler supports stack allocation of results of simple
1729 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1730 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1731 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1732 * fixed some bugs related to Unicode integration:
1733 ** the restarts for recovering from input and output encoding
1734 errors only appear when there is in fact such an error to
1736 * fixed some bugs revealed by Paul Dietz' test suite:
1737 ** MISC.549 and similar: late transformation of unsafe type
1738 assertions into derived types caused unexpected code
1740 ** SCALE-FLOAT type deriver is less wrong.
1741 ** type derivers for EXP, LOG and similar functions compute result
1742 types for complex arguments better.
1743 ** (MISC.563) CONJUGATE type deriver works for very restricted
1745 ** out-of-line type testers for character strings are available.
1746 ** EQUAL compiler transform understands specialness of objects
1748 ** accessing double-floats stored on the stack now works on x86-64.
1749 ** debugger internals could sometimes create invalid lispobjs,
1750 resulting in GC crashes.
1751 ** MISC.548: type check weakening can convert required type into
1753 ** initialization forms for bindings are not in scope of free special
1756 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1757 * incompatible change: thread support for non-NPTL systems has
1758 been removed - locking is buggy and unreliable. A threaded
1759 SBCL build will now warn at startup and refuse to create
1760 new threads, unless futex support is detected in the kernel
1761 * incompatible change: the top level REPL now has only an ABORT
1762 restart associated with it, not TOPLEVEL and ABORT as it used to.
1763 TOP and TOPLEVEL are now available as debugger commands for
1764 returning to the top level.
1765 * incompatible change: forms evaluated in the REPL now use the
1766 global optimization policy.
1767 * incompatible change: user- and system-initialization files are
1768 no longer processed with LOAD, but by READ and EVAL; hence the
1769 global optimization policy, startup package, readtable, etc,
1771 * The .fasl file format number has been incremented because of
1772 various incompatible changes.
1773 * internal entry point details and argument counts no longer appear
1774 in backtraces unless explicitly requested by setting
1775 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1776 * built-in and standard functions no longer have names like "top
1777 level local call to FOO".
1778 * fixed bug 32: functions defined in non-null lexical environments
1779 now have more legible printed representation
1780 * fixed bug 33: functions defined in non-null lexical environemnts
1781 are now more amenable to inspection by INSPECT.
1782 * workaround for bug 354: XEPs no longer appear in backtraces unless
1783 explicitly requested.
1784 * fixed bug: receiving the signal which results from attempting to
1785 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1786 SIGBUS on other *BSDs) on architectures where the C stack is also
1787 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1788 to debugger confusion or wild instability. (reported by Cheuksan
1790 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1791 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1792 (reported by Lutz Euler)
1793 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1794 compiled code. (reported by Paul Dietz)
1795 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1796 specialized parameter to a method to something that is not TYPEP
1797 the specializer is now possible.
1798 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1799 face of package deletion.
1800 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1801 pathname. (reported by David Tolpin on c.l.l)
1802 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1803 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1804 STRING-STREAM and FILE-STREAM, respectively.
1805 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1806 than previously; in addition, its test suite is now run on build.
1807 (thanks to Luke Gorrie)
1808 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1809 * optimization: added a immediate representation for single-floats
1811 * fixed some bugs revealed by Paul Dietz' test suite:
1812 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1813 ** attempting to create a package with a colliding nickname causes
1814 correctable errors to be signalled.
1815 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1816 ** several x86-64 backend bugs related to sign-extension of immediate
1819 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1820 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1821 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1823 * fixed loading of multiply forward-referenced layouts.
1824 (thanks to Cheuksan Wang)
1825 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1826 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1827 (see COMPILE-FILE documentation for details of :PRINT option)
1828 * fixed bugs 19 and 317: fixed-format floating point printing is
1829 more accurate. This also fixes a bug reported by Adam Warner
1830 related to the ~@F format directive.
1831 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1833 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1834 dispatch table if the from-char is a dispatch macro character.
1835 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1836 by the wordsize no longer ignore the last word. (reported by Lutz
1838 * fixed bug in type checking of dynamic-extent variables. (reported
1840 * optimization: sequence traversal functions use their freedom to
1841 coerce function designators to functions.
1842 * optimization: code with many calls to CLOS methods specialized on
1843 CLOS classes has had redundant type checks removed.
1844 * optimization: added declarations to speed up operations that access
1845 the internal character database (for example STRING-UPCASE)
1846 * optimization: comparison operations between floats and sufficiently small
1847 fixnums no longer create extra rationals
1848 * fixed some bugs related to Unicode integration:
1849 ** portions of multibyte characters at the end of buffers for
1850 character-based file input are correctly transferred to the
1851 start of the buffer at the next read.
1852 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1853 passing it through to OPEN.
1854 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1855 argument given to internal calls to OPEN.
1856 ** the built-in comment readers (introduced by character sequences
1857 ";" and "#|") are more forgiving to encoding errors; they will
1858 STYLE-WARN and then attempt to resync the stream at a character
1859 boundary. (thanks to Teemu Kalvas)
1860 * fixed some bugs in the x86-64 port:
1861 ** Negative short int return values from c-calls are sign-extended
1863 ** The stack is aligned to 16-bytes for c-calls, as required by
1864 the ABI. (thanks to Cheuksan Wang)
1865 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1866 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1867 for enums. (thanks to Vincent Arkesteijn)
1868 ** Multiple small optimizations and bugfixes for floating point
1870 * fixed some bugs revealed by Paul Dietz' test suite:
1871 ** Space, Tab, Linefeed, Return and Page have the invalid
1872 secondary constituent character trait.
1873 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1875 ** WITH-INPUT-FROM-STRING should only update the index place on
1877 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1878 works more reliably.
1879 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1880 with one-dimensional arrays with fill pointers.
1881 ** TYPE-OF failed on a complex with an integer realpart and a
1883 ** compiler failure during type inference for the code of form
1884 (IF (EQL X (THE ...)) ...) (MISC.535).
1886 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1887 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1888 platform. The port supports 61-bit fixnums, large memory spaces
1889 and reloading shared object files.
1890 * enhancement: saving cores with foreign code loaded is now
1891 supported on ppc/Darwin in addition to the previously supported
1893 * enhancement: the statistical profiler now walks deeper into the
1894 call stack for more meaningful call-graphs and accrued time
1895 reports (x86/x86-64 only). It also now reports time spent in
1897 * enhancement: it is now possible to trace most individual methods
1898 of a generic function in addition to tracing the generic function
1900 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1902 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1903 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1904 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1905 produces an error. (thanks to Vincent Arkesteijn)
1906 * bug fix: NAMESTRING on pathnames with :WILD components in their
1907 directories works correctly. (thanks to Artem V. Andreev)
1908 * fixed bug 125: compiler preserves identity of closures. (reported
1910 * bug fixed: functions with &REST arguments sometimes failed with
1911 "Undefined function" when compiled with (DEBUG 3). (reported by
1913 * bug fix: overflow during compiling of setting element of a bit
1914 vector with constant index and value. (reported by Timmy Douglas)
1915 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1916 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1917 * on x86 compiler partially supports stack allocation of dynamic-extent
1919 * GO and RETURN-FROM do not check the extent of their exit points
1920 when compiled with SAFETY 0.
1921 * fixed some bugs related to Unicode integration:
1922 ** encoding and decoding errors are now much more robustly
1923 handled; it should now be possible to recover even from invalid
1924 input or output to the terminal. (thanks to Teemu Kalvas)
1925 ** provided a first cut at implementing STRING-TO-OCTETS and
1926 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1927 ** altered the SB-MD5 contributed module slightly, changing the
1928 interface just enough for it to be supportable for builds where
1929 lisp characters are not eight bits.
1930 * fixed some bugs revealed by Paul Dietz' test suite:
1931 ** the FORMATTER-generated functions for ~V[ conditionals require
1932 the correct number of arguments.
1933 ** READ-FROM-STRING returns the mandated second value when applied
1934 to displaced strings.
1935 ** the #\Rubout and #\Backspace characters are treated as invalid
1936 constituent characters by the tokenizer.
1938 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1939 * new feature: reloading changed shared object files with
1940 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1941 * new feature: references to foreign variables and functions
1942 can now be compiled and loaded before the corresponding shared
1943 object file is loaded, as long as the foreign definitions are
1944 available at runtime.
1945 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1946 supported. (thanks to Dan Debertin)
1947 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1948 just keywords. (thanks to Vincent Arkesteijn)
1949 * fixed bug #331: structure-class instances corresponding to
1950 DEFSTRUCT forms are now created eagerly.
1951 * fixed bug #345: backtraces from calls to undefined functions work
1952 on x86 as well. Related bug #61 is now also partially fixed on x86
1953 (backtraces from throws to unknown catch tags.)
1954 * bug fix: lambda-list parsing is now stricter vrt. order and number
1955 of lambda-list keywords.
1956 * bug fix: as specified by AMOP, an error is signalled if a
1957 class-option appears multiple times in a DEFCLASS form. (reported
1959 * bug fix: RANDOM can be compiled when the compiler derives the type
1960 of its numeric argument as a disjoint set of small integers.
1961 (reported by Paul Dietz)
1962 * bug fix: starting a core saved with shared objects loaded when
1963 those objects are not available no longer causes threaded SBCL to
1964 hang. (reported by Sean Ross)
1965 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1967 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1968 argument, which must always be NIL. (reported by Kalle Niemitalo)
1969 * bug fix: printing 1.0d+23 no longer results in an error.
1970 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1971 * bug fix: structure slot setters preserve evaluation order. (thanks
1973 * fixed some bugs related to Unicode integration:
1974 ** RUN-PROGRAM can allow its child to take input from a Lisp
1975 stream. (reported by Stefan Scholl)
1976 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1977 locales. (reported by Ken Causey)
1978 * fixed some bugs revealed by Paul Dietz' test suite:
1979 ** INCF, DECF and REMF evaluate their place form as specified in
1981 ** FORMATTER expands ~{ ~} iteration directives with V or #
1982 parameters correctly.
1983 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1984 consequent uses no arguments correctly.
1985 ** the system has a partial understanding of the (COMPLEX RATIO)
1987 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1990 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1991 * new feature: a build-time option (controlled by the :SB-UNICODE
1992 keyword feature, enabled by default) for building the system with
1993 support for the entire 21-bit character space defined by the
1995 * new feature: the system now has rudimentary external-format
1996 support; the primary user-visible change at this time is that
1997 characters with the high bit set (such as lower-case-e-acute) will
1998 print correctly to a terminal in a UTF-8 environment.
1999 * minor incompatible change: BASE-CHAR no longer names a class;
2000 however, CHARACTER continues to do so, as required by ANSI.
2001 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2002 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2003 has been moved to the SB-EXT package (temporarily re-exported from
2005 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2006 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2008 * fixed bug #351: better error-handlind and reporting for malformed
2010 * fixed bug #350: bignum-printing is now more memory-efficient,
2011 allowing printing of very large bignums, eg. (expt 2 10000000).
2012 (reported by Bruno Haible)
2013 * fixed bug #302: better primitive-type selection for intersection
2015 * fixed bug #308: non-graphic characters now all have names, as
2016 required. (reported by Bruno Haible)
2017 * bug fix: redefining a class with different superclasses now correctly
2018 removes it from the direct-subclasses of its previous superclasses.
2019 (reported by David Morse)
2020 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2021 new value now works. (reported by Bruno Haible)
2022 * bug fix: correct canonicalization of multiple non-standard slot
2023 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2024 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2025 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2026 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2027 now exists, an signals an error.
2028 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2029 during macroexpansion for non-iteration variables as well. (reported
2030 by Bruno Haible for CMUCL)
2031 * bug fix: Cyclic structures and unprintable objects in compiler
2032 messages no longer cause errors. (reported by Bruno Haible)
2033 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2034 and READ-FROM-STRING all now return a primary value of NIL if
2035 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2036 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2037 (reported by Bruno Haible for CMUCL)
2038 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2039 do not designate a condition. (reported by Bruno Haible for
2041 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2042 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2043 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2044 permitting resolution in favour of any of the conflicting symbols.
2045 (reported by Bruno Haible for CMUCL)
2046 * bug fix: EQUAL compiler optimizations is less aggressive on
2047 strings which can potentially compare true despite having distinct
2048 specialized array element types.
2049 * bug fix: unit enumerations can be defined without dividing by
2050 zero. (thanks to Vincent Arkesteijn)
2051 * FORMAT compile-time argument count checking has been enhanced.
2052 (report from Bruno Haible for CMUCL)
2053 * a partial workaround for the bug 262: the compiler does not try to
2054 inline-expand a local function doing RETURN-FROM from a deleted
2055 BLOCK. (thanks to Peter Denno for the bug report and to David
2056 Wragg for the simple test case)
2057 * fixed some bugs revealed by Paul Dietz' test suite:
2058 ** RENAME-PACKAGE allows all package designators as new package
2060 ** constraint propagation and lambda variable substitution are
2061 more cautious in dealing with partially deleted code.
2062 ** compiler sometimes lost reoptimization passes.
2063 ** CERROR, given a condition as condition designator, passes its
2064 remaining arguments to the continue format control without
2066 ** Case-altering FORMAT directives work correctly on non-ASCII
2068 ** The REAL type specifier handles bounds outside the floating
2069 point ranges without signalling FLOATING-POINT-OVERFLOW.
2070 ** Functions with IR1-transformations can create intercomponent
2071 references to global functions.
2072 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2074 ** FORMAT ~R treats a nil value for its first parameter correctly.
2076 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2077 * enhancement: saving cores with foreign code loaded is now
2078 supported on x86/NetBSD and sparc/Linux in addition to the previously
2079 supported platforms.
2080 * bug fix: on some platforms repeated installations caused multiple
2081 copies of HTML documentation to be installed -- should not happen
2082 any more. (reported by Stefan Scholl)
2083 * bug fix: parsing self-recursive alien record types multiple times
2084 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2085 original patch by Helmut Eller for CMUCL)
2086 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2087 (thanks to Richard Kreuter)
2088 * bug fix: defining classes whose accessors are methods on existing
2089 generic functions in other (locked) packages no longer signals
2090 bogus package lock violations. (reported by François-René Rideau)
2091 * bug fix: special variables as DEFMETHOD parameters no longer have
2092 associated bogus type declarations. (reported by David Wragg and
2094 * bug fix: read-write consistency on streams of element-type
2095 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2096 * bug fix: redefiniton of the only method of a generic function with
2097 no DEFGENERIC no longer emits a full WARNING. In addition,
2098 redefinition of generic functions with no DEFGENERIC to an
2099 incompatible lambda list now signals an error. (thanks to Zach
2101 * bug fix: DEFGENERIC now works even when there's a function of the
2102 same name in an enclosing lexical environment. (thanks to Zach
2104 * fixed compiler failure, caused by instrumenting code during
2105 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2106 * optimization: added loop analysis and improved register allocation
2107 * fixed some bugs revealed by Paul Dietz' test suite:
2108 ** POSITION on displaced vectors with non-zero displacement
2109 returns the right answer.
2110 ** (SIMPLE-STRING) is a valid type specifier for sequence
2112 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2114 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2115 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2117 ** The justification version of the FORMAT ~< directive treats
2118 non-zero minpad parameter correctly.
2120 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2121 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2122 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2123 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2124 the supported interface.
2125 * new feature: Single-stepping of code compiled with DEBUG 2 or
2126 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2127 * new feature: saving cores with foreign code loaded is now
2128 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2129 Timothy Moore's work for CMUCL)
2130 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2131 parameters to * instead of NIL if no initform is supplied.
2132 (reported by Johan Bockgaard)
2133 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2134 correctly when FUNCALL appears as the car of the form. Note:
2135 despite this FUNCALL forms are not currently subject to
2136 compiler-macro expansion. (port of Raymond Toy's fix for the
2137 same from CMUCL, reported by Johan Bockgaard)
2138 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2139 (thanks for Teemu Kalvas)
2140 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2141 case instead of terminating the iteration (thanks for Julian
2142 Squires, Sean Champ and Raymond Toy)
2143 * bug fix: incorrect expansion of defgeneric that caused a style
2144 warning. (thanks for Zach Beane)
2145 * bug fix: slot accessor effective method computation works properly
2146 for classes with multiple non-standard applicable methods on
2147 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2148 * on x86 compiler supports stack allocation of results of LIST and
2149 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2150 CMUCL implementation by Gerd Moellmann)
2151 * fixed some bugs revealed by Paul Dietz' test suite:
2152 ** FORMAT strings with both the ~<~:;~> form of the justification
2153 directive and pretty-printing directives cause an error.
2155 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2156 * incompatible change: the internal functions
2157 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2158 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2159 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2160 instead of the old functions.
2161 * new feature: on platforms where "dladdr" is available foreign
2162 function names now appear in backtraces. (based on Helmut Eller's
2164 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2165 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2167 * documentation: ASDF manual is now distributed with SBCL.
2168 * bug fix: SBCL can now load its contributed modules with REQUIRE
2169 even if the system-provided entries have been removed from
2170 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2172 * bug fix: backtraces involving undefined functions or assembly
2173 routines are more informative. (thanks to Brian Downing)
2174 * bug fix: mutually referent alien structures now work correctly.
2175 (reported by Rick Taube)
2176 * bug fix: structures defined by WITH-ALIEN can be referred to
2177 within other definitions in the same WITH-ALIEN.
2178 * bug fix: division operators (MOD, TRUNCATE and the like) with
2179 constant zero divisors and integer dividends no longer generate
2181 * bug fix: provide default methods for INPUT-STREAM-P and
2182 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2183 * bug fix: improve the detection and resolution of MOP metacycles
2184 (where effective method computation depends on the generic function
2185 having its effective method computed). (reported by Bruno Haible)
2186 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2187 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2188 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2189 * bug fix: pathnames with relative directory components can be
2190 represented relative to default pathnames.
2191 * optimization: in taking the GCD of bignums, reduce the two bignums
2192 to approximately the same size (using Euclid's algorithm) before
2193 applying the more sophisticated binary GCD. (thanks to Juho
2195 * optimization: COUNT on bitvectors now operates word-at-a-time.
2196 * optimization: ASH with a positive, but not necessarily constant,
2197 (leftwards) shift, when in a modular context, is compiled to a
2199 * fixed some bugs revealed by Paul Dietz' test suite:
2200 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2201 if the corresponding argument is NIL.
2202 ** FORMAT directives accepting a minpad parameter treat negative
2204 ** literal commas as character parameters to FORMAT directives are
2206 ** literal spaces directly after ~<Newline> directives within a
2207 format-logical-block (~:< ~@:>) do not induce :FILL-style
2208 conditional newlines.
2209 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2210 as specified: it no longer includes conditional newlines).
2211 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2213 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2214 :PER-LINE-PREFIX argument does not evaluate to a string.
2216 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2217 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2218 the manual for details; for now, package locks can be disabled by
2219 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2220 if no major problems are found then it is likely that they will be
2221 compiled in unconditionally.
2222 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2223 unsupported operators on all platforms. To load a shared library
2224 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2225 object file, link it into a shared library outside of SBCL and
2226 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2228 * bug workaround: ROOM T and the GC were not working together
2229 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2230 reporting facility aren't preserved. That reporting has been
2231 disabled, so now until and unless someone figures out how to make it
2232 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2233 * minor incompatible change: as threatened around sbcl-0.8.0, the
2234 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2235 The symbols are also exported from SB-PCL for backwards
2236 compatibility, but more so than before SB-PCL should be treated as
2237 an implementation-internal package.
2238 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2240 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2241 It is known as of this release not to work on the Alpha, however.
2242 * fixed bug #167: errors signalled due to illegal syntax in method
2243 bodies are now more legible.
2244 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2245 designators and can hence be used with TYPEP.
2246 * fixed bug #333: CHECK-TYPE now ensures that the type error
2247 signalled, if any, has the right object to be accessed by
2248 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2249 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2250 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2252 * fixed bug #334: programmatic addition of slots using specialized
2253 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2254 and :ALLOCATION :CLASS slots.
2255 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2256 float exponents. (rereported by Peter Seibel)
2257 * fixed a bug: #\Space (and other whitespace characters) are no
2258 longer considered to be macro characters in standard syntax by
2259 GET-MACRO-CHARACTER.
2260 * fixed bug: initialization of condition class metaobjects no longer
2261 causes an instance of the condition to be created. (reported by
2263 * fixed bug: it is now possible to have slots such that
2264 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2265 description is neither :INSTANCE nor :CLASS.
2266 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2267 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2268 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2269 non-standard SLOT-DEFINITION-ALLOCATION values.
2270 * fixed bugs: various race conditions handling exiting threads.
2271 CL-PPCRE's thread torture test now passes.
2272 * fixed arguably-a-bug: GC time proportional to number of threads in
2273 system even when most of them are idle
2274 * optimization: improved performance of BIT and SBIT on bit-vectors.
2275 * .fasl file incompatibility: The fasl file version number has
2276 been incremented because of changes associated with package locks.
2278 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2279 * minor incompatible change: the system no longer provides
2280 optimization hints (conditions which are TYPEP
2281 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2282 mode; these hints are still emitted when higher SPEED optimization
2284 * new contrib module: a sampling profiler (profiling by statistical
2285 sampling, rather than by instrumenting functions) is available as
2286 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2287 * the behaviour of the standard function ED is now customizeable by
2288 third parties through a hook variable: see ED's documentation
2289 string for information on the protocol.
2290 * the compiler no longer emits efficiency notes for (FUNCALL X)
2291 when the type of X is uncertain under default optimization
2293 * fixed bug 276: mutating a binding of a specialized parameter to a
2294 method to something that is not TYPEP the specializer is now
2296 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2297 exhibit the required behaviour on the x86 platform. (thanks to
2298 Peter van Eynde, Eric Marsden and Bruno Haible)
2299 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2300 even for difficult arguments. (reported by Peter Graves)
2301 * fixed bug 141a: the backquote printer now descends quoted
2303 * fixed another bug in backquote printing: no more destructive
2304 modification of the form's list structure. (reported by Brian
2306 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2307 move between its address being taken and the call to
2308 interrupt_thread, fixing a crashing race condition.
2309 * the SB-POSIX contrib implementation has been adjusted so that it
2310 no longer exhibits ridiculously poor performance when constructing
2311 instances corresponding to C structs.
2313 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2314 * minor incompatible change: the sb-grovel contrib now treats C
2315 structures as alien (in the sense of SB-ALIEN) objects rather than
2316 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2317 has implications for memory management of client code
2318 (sb-grovel-returned objects must now be manually managed) and for
2319 type safety (alien objects now have full types).
2320 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2321 used to control emission of compiler diagnostics, rather than the
2322 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2323 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2324 quality should be considered deprecated.
2325 * install.sh now installs the user manual as well
2326 * (not quite a new documentable feature, but worth considering in
2327 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2328 beginnings of a semantically meaningful condition hierarchy is
2329 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2331 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2332 designator as the defaults argument.
2333 * fixed bug: Displaced arrays whose displaced-to array has become
2334 too small now cause ARRAY-DIMENSION to signal an error, providing
2335 for safer bounds-checking. (reported by Bruno Haible)
2336 * fixed bug: DEFCLASS slot definitions with identical :READER and
2337 :WRITER names now signal a reasonable error. (reported by Thomas
2339 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2341 * fixed bug: Invalid slot specification errors now print correctly.
2342 (thanks to Zach Beane)
2343 * fixed bug 320: Shared to local slot value transfers in class
2344 redefinitions now happen corrently from superclasses as
2345 well. (reported by Bruno Haible)
2346 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2348 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2349 improper lists correctly. (reported by Bruno Haible)
2350 * fixed bug 313: source-transform for <fun-name> was erroneously
2351 applied to a call of a value of a variable with name <fun-name>.
2352 (reported by Antonio Menezes Leitao)
2353 * fixed bug 307: The obsolete instance protocol ensures that
2354 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2355 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2356 remove dead unknown-values globs from the middle of the stack.
2357 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2358 easier to resume long computations after using *BREAK-ON-SIGNALS*
2359 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2360 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2361 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2362 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2363 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2364 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2366 * fixed a (fairly theoretical) bug in string printing: if
2367 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2368 does not have array-element-type equal to the most general string
2370 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2371 function name. (thanks to Nikodemus Siivola)
2372 * fixed bug: compile-time format string checker failed on
2373 non-closed ~{. (reported by Thomas F Burdick)
2374 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2375 don't warn on legal loop code involving more than one aggregate
2376 boolean. (thanks to Nikodemus Siivola)
2377 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2378 in keyword position to MAKE-PACKAGE was not being reported as
2380 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2381 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2383 * fixed bugs 280 and 312: the checking for multiple definitions in a
2384 file is less likely to become confused by uses of inline
2386 * fixed bug: the #S reader macro performs the keyword coercion
2387 specified for slot names. (reported by Kalle Niemitalo)
2388 * fixed bug: lambda lists may contain symbols whose names start with
2389 & but are not lambda-list-keywords; their occurrence triggers a
2391 * fixed bug 321: define-method-combination argument lambda lists do
2392 not cause invalid code to be generated when &optional or &aux
2393 variables have default values. (reported by Bruno Haible)
2394 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2395 have CLOS classes; this appears also to have fixed reported
2396 instability in stack exhaustion detection.
2397 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2398 MUFFLE-WARNING when no associated restart is present is now
2400 * optimization: rearranged the expansion of various defining macros
2401 so that each expands into only one top-level form in a
2402 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2404 * optimization: used a previously little-used slot in symbols to
2405 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2407 * fixed some bugs revealed by Paul Dietz' test suite:
2408 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2410 ** Fixed an optimization bug related to inheritance of initforms
2411 from local to shared slots.
2412 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2413 ** CAST optimizer forgot to flush argument derived type.
2414 ** print/read consistency on floats is now orders of magnitude
2415 more likely. (thanks also to Bruno Haible for a similar report
2417 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2418 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2419 for objects of type REAL. Make it so.
2420 ** SXHASH is specified (infelicitously) to respect similarity,
2421 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2422 it so. (thanks to Markus Ziegler)
2423 ** on the Alpha, the compiler succeeds in compiling functions
2424 returning a known number of arguments greater than 63.
2425 ** fixed handling of invalid NIL arguments in keyword position
2427 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2429 ** provided a readably-printable representation for RANDOM-STATE
2431 ** ensured that pathnames, where they have a namestring, always
2432 print using #P"..." syntax.
2434 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2435 * Support for the forthcoming 2.0 version of the NetBSD kernel
2436 running on x86 hardware has been added. (thanks to Perry
2437 E. Metzger most immediately, and others for their past work)
2438 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2439 current release version; SBCL's OpenBSD support had been broken
2440 since about the time of OpenBSD's switch to ELF binary format.)
2441 * [placeholder for DX summary]
2442 ** user code with &REST lists declared dynamic-extent, under high
2443 speed or space and low safety and debug optimization policy.
2444 * The manual has been converted to Texinfo format and the debugger
2445 chapter from the cmucl manual has been added.
2446 * A facility has been added to extract documentation strings from
2447 sbcl and store them as Texinfo-formatted snippets for inclusion in
2448 the manual (via Texinfo's @include directive)
2449 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2450 the test case to Dave Roberts)
2451 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2452 pointers. (reported by Sean Ross)
2453 * bug fix: PROFILE output is printed nicely even for large numerical
2454 values. (thanks to Zach Beane)
2455 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2456 greater than 32 handle EOF correctly.
2457 * bug fix: on X86 an immediate argument of the IMUL instruction is
2458 correctly printed in disassembly. (thanks to Lutz Euler)
2459 * bug fix: class slots in redefined classes preserve their old
2460 values. (thanks to Bruno Haible and Nikodemus Siivola)
2461 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2462 succeeds. (reported by Marco Baringer)
2463 * fixed some bugs revealed by Paul Dietz' test suite:
2464 ** READ-SEQUENCE now works on ECHO-STREAMs.
2465 ** RATIONALIZE works more according to its specification. (thanks
2468 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2469 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2470 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2471 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2472 should matter to you only if you rebind the printer control
2473 variables and then find you want different bindings in the
2474 debugger than in the ordinary execution of your program.)
2475 * The runtime build system has been tweaked to support building
2476 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2477 assembler and linker. (thanks to Nikodemus Siivola)
2478 * Unbound, undefined, undeclared variables now trigger full
2479 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2480 more often programmer error than deliberate exploitation of undefined
2482 * optimization: the hash algorithm for strings has changed to one
2483 that is less vulnerable to spurious collisions. (thanks to Juho
2485 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2486 needless bounds checking. (thanks to Juho Snellman)
2487 * optimization: implemented multiplication as a modular
2488 (UNSIGNED-BYTE 32) operation on the PPC backend.
2489 * fixed some bugs revealed by Paul Dietz' test suite:
2490 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2492 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2493 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2494 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2496 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2498 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2500 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2501 their output stream on EOF from read.
2502 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2503 have been read to end-of-file.
2504 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2506 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2507 description of determination of which consecutive characters
2509 ** Printing the "Space" character with escaping on now yields "#\\ ",
2510 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2511 ** Reading floating-point numbers with *READ-BASE* set to a number
2512 less than 10 works correctly.
2513 ** Reading floating-point numbers with *READ-BASE* set to a number
2514 more than 10 works correctly.
2515 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2516 the readtable currently in effect.
2518 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2519 * minor incompatible change: parsing of namestrings on a physical
2520 (Unix) host has changed; numbers after the final #\. in a
2521 namestring are no longer interpreted as a version field. This is
2522 intented to be largely invisible to the user, except that the
2523 meaning of the namestring "*.*.*" has changed: it now refers to a
2524 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2525 should usually be replaced by
2526 (make-pathname :name :wild :type :wild :version :wild)
2527 with the added benefit that this is more likely to be portable.
2528 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2529 option to OPEN now signals an error if the file being opened
2530 exists; this may have an impact on existing code.
2531 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2532 signals received, on the PowerPC platforms (both Linux and
2533 Darwin). (thanks to Pierre Mai for pointing out the location of
2535 * several fixes on OS X: The system now builds and runs cleanly on
2536 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2537 (thanks to Brian Mastenbrook)
2538 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2539 second-resolution: integer multiples of 1/3600 between -24 and 24.
2540 (thanks to Vincent Arkesteijn)
2541 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2542 type when called with 1 argument; PEEK-CHAR checked type of
2543 PEEK-TYPE only after having read first character from a
2544 stream. (reported by Peter Graves)
2545 * bug fix: the garbage collector now has much better locality
2546 behaviour, and in particular no longer treats all memory as being
2547 exhausted when many small objects point to each other in a deeply
2549 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2550 recognized as being TYPEP their class.
2551 * bug fix: the PUSHNEW documentation string has been corrected.
2552 (thanks to Vincent Arkesteijn)
2553 * bug fix: defaulting of the value for the last of an atypically
2554 large number of multiple values being bound was not being
2555 performed correctly on the Alpha or PPC platforms
2556 * optimization: implemented multiplication as a modular
2557 (UNSIGNED-BYTE 32) operation on the x86 backend.
2558 * optimization: SEARCH on simple-base-strings can now be open-coded.
2559 (see also contrib/compiler-extras.lisp for inspiration for
2560 teaching the compiler about the Boyer-Moore algorithm).
2561 * value, returned by MAX (and MIN) called with several EQUALP, but
2562 not EQL, arguments now does not depend on compiler settings.
2563 * fixed some bugs revealed by Paul Dietz' test suite:
2564 ** in stack analysis liveness information is propagated from
2565 non-local entry points.
2566 ** pathwise CAST removing failed when the CAST node did not start
2568 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2569 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2571 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2572 host is already defined.
2573 ** RENAME-FILE works on streams instead of signalling an internal
2575 ** PEEK-CHAR uses the current readtable when determining whether
2576 or not a character is whitespace.
2577 ** MERGE-PATHNAMES handles the case when the pathname does not
2578 specify a name while the default-pathname specifies a version.
2579 ** Pathnames now stand a better chance of respecting print/read
2581 ** Attempting to use standardized file system operators with a
2582 pathname with invalid :DIRECTORY components signals a
2584 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2586 ** DIRECTORY on logical pathnames is more correct.
2587 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2588 signal a TYPE-ERROR if their argument is not a stream.
2589 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2590 designator argument does not designate a stream.
2591 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2592 examining the synonym.
2593 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2595 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2596 element-type larger than ([UN]SIGNED-BYTE 32).
2598 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2599 * When built with the :SB-FUTEX feature, threaded builds now take
2600 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2601 for faster/more reliable mutex and condition variable support.
2602 * Incompatible change (but one you probably shouldn't have been using
2603 anyway): the interface and code for arbitrating between multiple
2604 threads in the same user session has been redesigned.
2605 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2606 error when called without an explicit environment argument.
2607 (thanks to Nikodemus Siivola)
2608 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2609 confused about their position. (thanks to Adam Warner and Gerd
2611 * bug fix: Pretty printing backquoted forms with unquotations in the
2612 argument list position of various code constructs such as LAMBDA
2613 now works correctly. (reported by Paul Dietz)
2614 * bug fix: Pretty printing unquotations no longer loses all
2615 stream position information.
2616 * optimization: performance of string output streams is now less
2617 poor for multiple small sequence writes.
2618 * optimization: performance of CSUBTYPEP in the presence of complex
2619 expressions involving CONS and NOT many times has been improved.
2620 (reported by Paul Dietz)
2621 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2623 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2624 streams for the REPL, for the debugger, and so on. (thanks to
2626 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2627 * fixed some bugs revealed by Paul Dietz' test suite:
2628 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2629 is ignored if it is too small, rather than propagating through
2630 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2631 ** extremely complex negations of CONS types were not being
2632 sufficiently canonicalized, leading to inconsistencies in
2634 ** VALUES tranformer lost derived type.
2636 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2637 * fixed a bootstrapping bug: the build process no longer assumes
2638 that the various BOOLE-related constants have the same value in
2639 host and target lisps. (noted by Paul Dietz' test suite on an
2640 SBCL binary built from CLISP)
2641 * The system can now be dynamically linked on the MIPS platform,
2642 which enables dynamic loading of foreign code from Lisp. (thanks
2643 to Ralf Baechle for discussions on the MIPS ABI)
2644 * The system now records debugging information for its own source
2645 files in a filesystem-position-independent manner, relative to
2646 the "SYS" logical host.
2647 * fixed a compiler bug: MV-LET convertion did not check references
2648 to the "max args" entry point. (reported by Brian Downing)
2649 * tweaked disassembly notes to be less confident about proclaiming
2650 some instruction as an LRA. (thanks to Brian Downing)
2651 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2652 now each have their own history, command character, and other
2653 characteristics. (thanks to David Lichteblau)
2654 * fixed some bugs revealed by Paul Dietz' test suite:
2655 ** compiler failure in compiling LOGAND expressions including a
2657 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2658 shift greater than 32.
2659 ** FLUSH-DEST did not mark blocks for type check regeneration.
2660 ** HANDLER-CASE failed to accept declarations in handler clauses
2661 in some circumstances.
2663 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2664 * New code in contrib/sb-introspect (still probably not entirely
2665 stable yet) provides some support for smart Lisp development
2666 environments like SLIME.
2667 * The conditions signalled for errors occurring when loading .fasl
2668 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2669 in a way which should help ASDF recover gracefully.
2670 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2671 stuff has been cleaned up. If you code contrib/ stuff, this might
2672 affect you, and you can look at contrib/README, contrib/STANDARDS,
2673 and/or the 0.8.4.27 diff to check.
2674 * In full calls the compiler now does not generate checks for declared
2675 argument types for all arguments.
2676 * various threading fixes
2677 ** and some experimental patches which didn't make it into
2678 the main tree for this release, but which are shipped in
2679 contrib/experimental-thread.patch as a possible fix for some
2680 failures (deadlock, spinning...) in GC-intensive multithreaded
2682 * fixed PPC build problem (source code incompatibility of different
2683 library versions): added offsetof() hackery which attempts to divine
2684 where glibc maintainers put uc_mcontext today
2685 * fixed bug 282: compiler does not trust type assertions while passing
2686 arguments to a full call.
2687 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2688 &OPTIONAL VALUES type parameter.
2689 * fix bug 214: algorithm for noting rejected templates is now more
2690 similar to that of template seletion. (also reported by rydis on
2692 * fixed bug 141b: printing backquoted information readably and prettily
2693 inserts a space where necessary.
2694 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2695 (CHARACTER 10) are now reported as errors, rather than propagated
2696 as unknown types. (reported by piso on #lisp)
2697 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2698 with values NIL and :ERROR. (thanks to Milan Zamazal)
2699 * fixed bug 191c: CLOS now does proper keyword argument checking as
2700 described in CLHS 7.6.5 and 7.6.5.1.
2701 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2702 longer raise an error; further, using a list as a for-as-arithmetic
2703 counter now raises a meaningful error.
2704 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2705 now understood by sequence creation functions such as MAKE-SEQUENCE
2707 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2708 a STRING-INPUT-STREAM.
2709 * compiler enhancement: SIGNUM is now better able to derive the type
2711 * type declarations inside WITH-SLOTS are checked. (reported by
2713 * fixed some bugs revealed by Paul Dietz' test suite:
2714 ** incorrect optimization of TRUNCATE for a positive first
2715 argument and negative second.
2716 ** compiler failure in let-convertion during flushing dead code.
2717 ** compiler failure while deriving type of TRUNCATE on an
2718 interval, containing 0.
2719 ** ASH of a negative bignum by a negative bignum count now returns
2721 ** intersection of CONS types now canonicalizes properly, fixing
2722 inconsistencies in SUBTYPEP.
2724 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2725 * incompatible change: The --disable-debugger command line
2726 option now clobbers the debugger at a more fundamental
2727 level, by redefining #'INVOKE-DEBUGGER instead of by
2728 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2729 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2730 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2731 enter the debugger REPL and then suffer recursive errors
2732 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2733 while under the new system, BREAK in --disable-debugger mode
2734 terminates the system just as an unhandled error would.
2735 * fixed compiler performance when processing loops with a step >1;
2736 * bug fix: DOCUMENTATION now retrieves generic function
2737 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2738 support has been systematized, and now supports the methods
2739 specified by ANSI, along with a default method and a method for
2740 slot documentation. (reported by Nathan Froyd)
2741 * bug fix: effective methods associated with a generic function are
2742 no longer cached over a change of that generic function's method
2743 combination. (reported by Andreas Fuchs)
2744 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2745 names a non-existent directory. (thanks to Andreas Fuchs)
2746 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2747 the PPC platform, lead to stack corruption; this has been fixed.
2748 (reported by Rainer Joswig)
2749 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2750 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2751 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2752 arithmetic in general, is now much more reliable on the PPC
2754 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2755 platform now returns the right answer.
2756 * optimization: restored some effective method precomputation in
2757 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2758 precomputation is now tunable.
2759 * optimization: compiler-internal data structure use has been
2760 reviewed, and changes have been made that should improve the
2761 performance of the compiler by about 20%.
2762 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2763 simple-base-strings and simple-bit-vectors is improved.
2764 * optimization: the optimization of 32-bit logical and arithmetic
2765 functions introduced in version 0.8.3 on the x86 has been
2766 implemented on the mips, ppc and sparc platforms; an
2767 implementation of the same facility, but for 64-bit arithmetic,
2768 has been added for the alpha.
2769 * microoptimization: the compiler is better able to make use of the
2770 x86 LEA instruction for multiplication by constants.
2771 * bug fix: in some situations compiler did not report usage of
2772 generic arithmetic in (SPEED 3) policy.
2773 * bug 145b fix: compiler used wrong type specifier while converting
2774 MEMBER-types to numeric.
2775 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2777 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2778 index argument now works properly on the Alpha platform.
2779 * bug fix: floating point exception treatment on the Alpha platform
2781 * bug fix: FILE-POSITION works much better on string input and
2782 output streams. (thanks to Nikodemus Siivola)
2783 * bug fix: many threading/garbage collection symptoms sorted.
2784 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2785 might be pseudo-atomic.
2786 * internal change: Stopping for GC is now done with signals not
2787 ptrace. GC is now done in whichever thread wanted it, instead of
2789 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2791 * bug fix: result form in DO is not contained in the implicit
2793 * incompatible change: ICR structure is changed; the value part of
2794 CONTINUATION is now called LVAR; corresponding functions are
2795 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2796 * added type deriver for ISQRT (thanks to Robert E. Brown).
2797 * bug fix: better support for loading from the command line when an
2798 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2800 * fixed some bugs revealed by Paul Dietz' test suite:
2801 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2802 ** ROUND and FROUND now give the right answer when given very
2803 small float arguments.
2804 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2806 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2807 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2808 ** LCM should return a non-negative integer.
2809 ** PARSE-INTEGER returned the index of a terminator instead of the
2810 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2811 ** PARSE-INTEGER returned an incorrect index being applied to a
2813 ** LCM with two arguments of 0 returns 0 rather than signalling
2815 ** unsigned addition of a 32-bit constant with the high bit set no
2816 longer causes an internal compiler error on the x86.
2817 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2818 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2819 with negative last argument.
2820 ** byte specifiers with zero size and position no longer cause
2821 an error during type derivation.
2822 ** bignum multiplication on the Alpha platform now returns the
2824 * porting: The system now builds on SuSE AMD64, although it still
2825 generates a 32-bit binary.
2826 * .fasl file incompatibility: The fasl file version number has
2827 been incremented (because of the changes to internal compiler
2828 data structures referred to above).
2830 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2831 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2832 more accurately, on the Darwin kernel running on PowerPC hardware.
2833 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2834 * Compiler code deletion notes now signal a condition of type
2835 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2836 an associated MUFFLE-WARNING restart.
2837 * The compiler now performs limited argument count validation of
2838 constant format strings in FORMAT, and where appropriate in ERROR,
2839 CERROR and WARN. (thanks to Gerd Moellmann)
2840 * New ASDF-INSTALL contrib can be used for automatic download and
2841 installation of third-party Lisp code from CCLAN or other sites
2843 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2844 which forces another thread to execute a function supplied by the
2846 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2847 now accept and act upon their :ELEMENT-TYPE keyword argument.
2848 (reported by Martin Atzmueller, Edi Weitz)
2849 * bug fix: FILE-POSITION now accepts position designators up to
2850 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2851 is the greater. (thanks to Patrik Nordebo)
2852 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2853 Kalle Olavi Niemitalo)
2854 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2855 printable. (reported by Eric Marsden)
2856 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2857 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2858 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2859 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2860 (thanks to Stig Sandoe)
2861 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2862 UNREAD-CHAR now correctly includes the unread character in the
2863 target sequence. (thanks to Gerd Moellmann)
2864 * bug fix in threaded builds: the system can now be suspended and
2865 resumed by shell job control with minimal disruption.
2866 * bug fixes in times and timezones >2038AD
2867 * better handling of "where is GNU make?" problem in build scripts
2868 (thanks to Nikodemus Siivola)
2869 * new optimization: inside a named function any reference to a
2870 function with the same name is considered to be a self-reference;
2871 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2872 optimization quality.
2873 * new optimization on x86: logical functions and + now have
2874 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2875 used when the result is truncated to 32 bits.
2876 * VALUES declaration is partially enabled.
2877 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2878 * fixed some bugs revealed by Paul Dietz' test suite:
2879 ** The system now obeys the constraint imposed by
2880 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2881 types form a lattice under type intersection.
2882 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2883 ** ASSOC now ignores NIL elements in an alist.
2884 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2885 and (1+ MOST-POSITIVE-FIXNUM) answers.
2886 ** The addition of a method with invalid qualifiers to a generic
2887 function does not cause an error to be signalled immediately;
2888 a warning is signalled, and the error is generated only on
2889 calling the generic function.
2890 * changed .fasl file version number, in part to add type codes for
2891 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2892 obscure ANSI requirements
2894 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2895 * fixed bug 148: failure to inline-expand a local function left
2896 garbage, confusing the compiler.
2897 * fixed bugs 3cd: structure slot readers perform type check if the
2898 slot can have an invalid value (i.e. it is either not initialized
2899 or can be written with a less specific slot writer).
2900 * bug fix: the compiler now traps array references to elements off
2901 the end of an array; previously, the bounds checking in some
2902 circumstances could go off-by-one.
2903 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2905 * type declarations for array element types now obey the description
2906 on the CLHS page "Declaration TYPE", as per discussions on
2907 sbcl-help around 2003-05-08. This means that a declaration
2908 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2909 declaration, all references to BAR will be asserted or assumed
2910 (with THE, so dependent on compiler policy) to involve objects of
2911 type FOO. Note that no such declaration is implied in
2912 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2913 * declared types of functions from the "Conditions"
2914 chapter. (reported by Paul Dietz)
2915 * bug fix: CERROR accepts a function as its first argument.
2916 * bug fix: NTH an NTHCDR accept a bignum as index
2917 arguments. (reported by Adam Warner)
2918 * optimization: character compare routines now optimize comparing
2919 against a constant character. (reported by Gilbert Baumann)
2920 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2921 argument now works properly on the MIPS platform.
2922 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2923 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2924 declared to have a functional type, does not cause an error
2926 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2927 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2928 * fixed bug: if last continuation of a deleted block has a
2929 destination, this destination should be deleted too. (reported by
2931 * fixed a bug in the bootstrap process: the host compiler's values
2932 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2933 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2934 test case from Patrik Nordebo)
2935 * improved the ability of the disassembler on the PPC platform to
2936 provide helpful disassembly notes.
2937 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2938 the class in more cases than previously.
2939 * bug fix: FILE-POSITION now understands :START and :END for
2940 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2941 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2942 8) data. (thanks to David Lichteblau)
2943 * bug fix: it is possible to add a method to a generic function
2944 without lambda list.
2945 * bug fix: reader failed to signal END-OF-FILE inside an
2946 object representation. (reported by Nikodemus Siivola)
2947 * fixed some bugs revealed by Paul Dietz' test suite:
2948 ** LAST and [N]BUTLAST should accept a bignum.
2949 ** condition slot accessors are methods.
2950 ** (VECTOR NIL) is a subtype of STRING.
2952 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2953 * minor incompatible change: some nonsensical specialized lambda
2954 lists (used in DEFMETHOD) which were previously ignored now signal
2956 * minor incompatible change: the system is now aware of the types of
2957 variables in the COMMON-LISP package, and will signal errors for
2958 most violations of these type constraints (where previously they
2959 were silently accepted).
2960 * minor incompatible change: COMPILE-FILE now uses the freedom
2961 afforded (ANSI 3.2.2.3) to use derived function types for
2962 functions defined in the same file. This also permits the system
2963 to warn on static type mismatches and function
2964 redefinition. (Currently it does not work with high DEBUG level.)
2965 * minor incompatible change: VALUES declaration is disabled.
2966 * When issuing notes, the compiler now signals a condition of type
2967 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2968 restart for use in user handlers. It is expected that the
2969 COMPILER-NOTE condition will eventually become a condition
2970 supertype to a hierarchy of note types, which will then be
2971 handleable in a similar fashion. However, at the moment, no such
2972 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2973 but it's an implementation detail, not a classification for the
2975 * Changes in type checking closed the following bugs:
2976 ** type checking of unused values (192b, 194d, 203);
2977 ** template selection based on unsafe type assertions (192c, 236);
2978 ** type checking in branches (194bc).
2979 * A short form of VALUES type specifier has ANSI meaning (it has
2980 increased the number of situations when SBCL cannot perform type
2982 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2983 keywords or constants is permissible.
2984 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2985 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2986 classes. (thanks to Antonio Martinez)
2987 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2988 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2989 argument to a pretty-print stream. Instead, it leaves any such
2990 operations to DESCRIBE-OBJECT methods.
2991 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2993 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2994 lambda lists. (thanks to David Lichteblau)
2995 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2996 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2997 (thanks to Gerd Moellmann)
2998 * fixed bug 246: increased compilation speed of long
2999 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3001 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3003 * DEFCONSTANT now throws a condition of type
3004 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3005 constant to a non-EQL value; CONTINUE and ABORT restarts
3006 respectively change and preserve the value.
3007 * fixed bug 63: The code walker, part of the implementation of CLOS,
3008 is now better at handling symbol macros.
3009 * bug fix: There is no longer an internal implementation type named
3010 CL:LENGTH. (reported by Raymond Toy)
3011 * bug fix: In macro-like defining macros/special operators the
3012 implicit block does not enclose the lambda list.
3013 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3014 enclosed in parentheses) are not suitable as type specifiers, and
3015 their use properly signals an error now.
3016 * bug fix: An argument count mismatch for a type specifier in code
3017 being compiled no longer causes an unhandled error at compile
3018 time, but signals a compile-time warning.
3019 * fixed simple vector readable printing
3020 * bug fix: DESCRIBE takes more care over whether the class
3021 precedence list slot of a class is bound before accessing it.
3022 (reported by Markus Krummenacker)
3023 * bug fix: FORMATTER can successfully compile pretty-printer format
3024 strings which use variants of the ~* directive inside.
3025 * bug fix: SEARCH now applies its TEST predicate to the elements of
3026 the arguments in the correct order. (thanks to Wolfhard Buss)
3027 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3028 in type inference. (thanks to Robert E. Brown)
3029 * bug fix: Reading in symbols with an explicit package name of ""
3030 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3031 * fixed some bugs revealed by Paul Dietz' test suite:
3032 ** NIL is now allowed as a structure slot name.
3033 ** Arbitrary numbers, not just REALs, are allowed in certain
3034 circumstances in LOOP for-as-arithmetic clauses.
3035 ** Multiple class redefinitions before slot access no longer
3036 causes a type error.
3037 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3038 association between the name and a class.
3039 ** Generic functions with non-standard method-combination and over
3040 five methods all of which return constants no longer return NIL
3041 after the first few invocations. (thanks to Gerd Moellmann)
3042 ** CALL-NEXT-METHOD with no arguments now passes the original
3043 values of the arguments, even in the presence of assignment.
3044 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3046 ** DISASSEMBLE works with closures and funcallable instances.
3047 ** ADD-METHOD now returns the generic function, not the new method.
3048 ** FIND-METHOD signals an error if the lengths of the specializers
3049 is incompatible with the generic function, even if the ERRORP
3051 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3052 which its argument is a member.
3053 ** DEFCLASS only redefines the class named by its class-name
3054 argument if that name is the proper name of the class;
3055 otherwise, it creates a new class.
3056 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3057 of the UNBOUND-SLOT condition to the name of the slot.
3058 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3059 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3060 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3061 SLOT-MAKUNBOUND in the specified fashion.
3063 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3064 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3065 cross-compilation host. As a consequence, we can now bootstrap our
3066 way up to SBCL starting with a bare gcc toolchain and human-readable
3067 source code (first the source to CLISP, then the source to SBCL).
3068 * A contributed module containing a partial implementation of the
3069 simple-streams interface has been included. (thanks to Rudi
3071 * A contributed module implementing the RFC1321 Message Digest
3072 Algorithm, known as MD5, has been included.
3073 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3074 no longer has any effect, as the code controlled by this feature
3075 has been deleted. (As far as we know, no-one has ever built using
3076 this feature, and its semantics were confused in any case).
3077 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3078 work on conditions (as required by the ANSI specification),
3079 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3080 expected behaviour on conditions. Users should note, however,
3081 that such behaviour is not required by the ANSI specification,
3082 and so use of this behaviour may render their code unportable.
3083 * fixed some bugs revealed by Paul Dietz' test suite:
3084 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3086 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3087 ** SXHASH on condition objects no longer returns NIL.
3088 ** :ALLOCATION :CLASS slots are better treated; their values are
3089 updated on class redefinition, and initforms inherited from
3090 superclasses are applied.
3091 ** REMOVE-METHOD returns its generic function argument even when
3092 no method was removed.
3093 ** SHARED-INITIALIZE now initializes the values of the requested
3094 slots, including those with :ALLOCATION :CLASS.
3095 ** ALLOCATE-INSTANCE now works on structure classes defined via
3096 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3098 ** SLOT-EXISTS-P now works on conditions, as well as structures
3100 ** MAKE-LOAD-FORM now has the required methods on
3101 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3102 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3103 keyword, and now implements the SLOT-NAMES argument.
3104 ** methods with &OPTIONAL arguments no longer allow too many
3105 arguments to be passed in the call without error.
3106 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3107 option is consistent with the required arguments of the generic
3108 function lambda list.
3109 * bug fix: REQUIRE accepts a string designator. (Thanks to
3111 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3112 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3113 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3114 * bug fix: The compiler now checks for duplicated variables in macro
3116 * bug fix: SETQ on globals returns the correct value.
3117 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3118 not a COMPILER-ERROR (followed by some other strange error on
3119 choosing the CONTINUE restart).
3120 * bug fix: make.sh and friends are now more consistent in the way that
3121 they look for GNU "make".
3123 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3124 * experimental native threads support (on x86 Linux >=2.4 only).
3125 This is not compiled in by default: you need to add :SB-THREAD to
3126 the target features. See the "Beyond ANSI" chapter of the manual
3128 * fix for longstanding nonANSIism: The old distinction between
3129 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3130 The return value from CL:FIND-CLASS is now a CLOS class, and
3131 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3132 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3133 * An interface to the MetaObject Protocol, as described in Kiczales,
3134 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3135 MIT Press, 1991, is available from the SB-MOP package.
3136 * incompatible change: the SB-PCL package should now be considered
3137 a private implementation detail, and no longer a semi-private MOP
3139 * minor incompatible change: due to rearrangement for threads, the
3140 control stack and binding stack are now allocated at arbitrary
3141 addresses instead of being hardcoded per-port. Users affected by
3142 this probably have to be doing advanced things with shared
3143 libraries, and will know who they are.
3144 * minor incompatible change: Previously, all --eval forms used were
3145 processed with READ before any of them were processed with EVAL.
3146 Now each --eval form is processed with both READ and EVAL before
3147 the next --eval form is processed. (Thus package operations like
3148 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3149 work as the user might reasonably expect.)
3150 * minor incompatible change: *STANDARD-INPUT* is now only an
3151 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3153 * minor incompatible change: Y-OR-N-P is now character-oriented,
3154 not line oriented. Also, YES-OR-NO-P now works without errors.
3155 (thanks to Antonio Martinez)
3156 * sb-aclrepl module improvements: an integrated inspector, added
3157 repl features, and a bug fix to :trace command.
3158 * Known functions, which cannot be open coded by the backend, are
3159 considered to be able to check types of their arguments. (fixing
3160 a bug report by Nathan J. Froyd)
3161 * fixed a bug in computing method discriminating functions: It is
3162 now possible to define methods specialized on classes which have
3163 forward-referenced superclasses. (thanks to Gerd Moellmann)
3164 * fixed evaluation order in optional entries (reported by Gilbert
3166 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3167 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3168 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3169 required-by-AMOP NAME argument, as well as CLASS and
3170 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3171 * fixed bug 20: DEFMETHOD can define methods using names that are
3172 not the proper names of classes to designate class specializers.
3173 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3174 Unix file descriptors, instead of blowing up. (thanks to Antonio
3176 * Garbage collection refactoring: user-visible change is that a
3177 call to the GC function during WITHOUT-GCING will not do garbage
3178 collection until the end of the WITHOUT-GCING. If you were doing
3179 this you were probably losing anyway.
3180 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3181 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3182 TYPEP the latter but not the former.
3183 * The compiler issues a full WARNING for calls to undefined functions
3184 with names from the CL package.
3185 * MAP-INTO for a vector destination is open coded. (reported by
3186 Brian Downing on c.l.l)
3187 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3188 documentation string.
3189 * fixed some bugs revealed by Paul Dietz' test suite:
3190 ** COPY-ALIST now signals an error if its argument is a dotted
3192 ** Condition slots are now accessed more correctly in the presence
3193 of multiple initargs for a given slot.
3194 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3195 exclude restarts of the same name associated with a different
3197 ** DEFCLASS of forward-referenced classes with another
3198 forward-referenced class in the superclasses list no longer
3200 ** Condition slots are now initialized once each, not multiple
3201 times. (thanks to Gerd Moellmann)
3202 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3204 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3205 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3206 arguments contain duplicated elements.
3207 ** RESTART-CASE understands local macros.
3208 ** RESTART-CASE associates exactly its own restarts with a condition.
3209 ** ENDP in safe mode checks its argument to be of type LIST.
3210 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3211 in question is unbound.
3212 ** Optimized MAKE-INSTANCE functions no longer cause internal
3213 assertion failures in the presence of duplicate initargs.
3214 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3215 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3216 propagated even in the ctor optimized implementation of
3218 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3220 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3221 * a better implementation of SXHASH on (simple) bit vectors,
3222 measured both in execution speed and in distribution of results
3223 over the positive fixnums, has been installed. Likewise, a better
3224 implementation of EQUAL for simple bit vectors is now available.
3225 * fixed CEILING optimization for a divisor of form 2^k.
3226 * fixed bug 240 (emitting extra style warnings "using the lexical
3227 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3228 by Antonio Martinez)
3229 * fixed SXHASH, giving different results for NIL depending on type
3230 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3231 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3232 variable. (found by Rolf Wester)
3233 * SBCL does not ignore type declarations for special
3234 variables. (reported by rif on c.l.l 2003-03-05)
3235 * some bug fixes in contrib/sb-aclrepl/
3236 * fixed some bugs revealed by Paul Dietz' test suite:
3237 ** a bug in the CONS type specifier, whereby the CAR and CDR
3238 types got intertwined, has been fixed;
3239 ** the type system is now able to reason about the interaction
3240 between INTEGER and RATIO types more completely;
3241 ** APPEND, [N]REVERSE and NRECONC check that those their
3242 arguments, which must be proper lists, are really so;
3243 ** An array specialized to be unable to hold elements has been
3244 implemented, as required -- yes, really -- by ANSI;
3245 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3246 on malformed property lists;
3248 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3249 * incompatible packaging change: in line with Unix convention,
3250 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3251 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3252 * REQUIRE and PROVIDE are now optionally capable of doing something
3253 useful. See the documentation string for REQUIRE.
3254 * infrastructure for a managed SBCL contrib system: contributed
3255 modules in this release include:
3256 ** the ASDF system definition facility;
3257 ** an interface to the BSD Sockets API;
3258 ** an ACL-like convenience interface to the repl;
3259 (thanks to Kevin Rosenberg)
3260 ** an implementation of ROTATE-BYTE, with efficient implementation
3262 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3263 gives a closer approximation to the right answer than previously.
3264 (thanks to Raymond Toy)
3265 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3266 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3267 optional environment arguments, as required by ANSI.
3268 * fixed bugs in other functions taking environment objects, allowing
3269 calls with an explicit NIL environment argument to be compiled
3271 * fixed bug 228: primary return values from
3272 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3273 COMPILE or FUNCTION.
3274 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3275 :TYPE will no longer signal errors on innocuous objects.
3276 * fixed bug 231b: SETQ is better at respecting type declarations in
3277 the lexical environment.
3278 * fixed a bug in DEFCLASS: classes named by symbols with no or
3279 unprintable packages can now be defined.
3280 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3281 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3282 * fixed compiler failure related to checking types of functions.
3283 (reported by Robert E. Brown)
3284 * the compiler is now much more consistent in its error-checking
3285 treatment of bounding index arguments to sequence functions: in
3286 (SAFETY 3) code, errors will be signalled in almost all cases if
3287 invalid sequence bounding indices are passed to functions defined
3288 by ANSI to operate on sequences.
3289 * fixed a bug in the build procedure: documentation of SBCL-specific
3290 packages is now preserved and available in the final Lisp image.
3291 * lifted FDEFINITION lookup out of loops in the implementation of
3292 many list operations. (thanks to Robert E. Brown)
3293 * fixed a bug in the reader: the #n# reader macro now works for
3294 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3295 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3296 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3297 E. Brown and Tony Martinez respectively)
3298 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3299 SLOT-BOUNDP: in particular, it is now able to optimize them much
3300 better, and is now not vulnerable to having packages renamed.
3301 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3302 always called when a slot is not present in an instance. (thanks
3304 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3305 longer signal an error on unreading a character following EOF on
3306 the previous constituent stream. (thanks to Tony Martinez)
3307 * fixed some bugs revealed by Paul Dietz' test suite:
3308 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3309 not just nonnegative fixnums;
3310 ** the logical bit-array operators such as BIT-AND now accept an
3311 explicit NIL for their "opt-arg" argument (to indicate a
3312 freshly-consed result bit-array);
3313 ** ELT now signals an error on an invalid sequence index in safe
3315 ** the type system is now cleverer about negations of numeric
3316 types, and consequently understands the BIGNUM and RATIO types
3318 ** the type system is now cleverer about the interaction between
3319 INTEGER and RATIO types: while bugs still remain, many more
3320 cases are accurately computed;
3321 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3322 if it is in the last clause;
3323 ** CONSTANTLY now correctly returns a side-effect-free function in
3325 ** DECLARE is no longer treated as a special-operator; in
3326 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3327 * incremented fasl file version number due to the change in the
3328 DEFSTRUCT-SLOT-DESCRIPTION structure.
3330 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3331 * minor incompatible change: code processed by the "interpreter" or
3332 EVAL now has a compilation optimization policy of (DEBUG 2)
3333 (changed from (DEBUG 1)) to improve debuggability of interactive
3334 development, and to allow the use of the debug RETURN command in
3336 * an experimental implementation of the RETURN command for the
3337 debugger has been included. (thanks to Frederik Kuivinen)
3338 * fixed bug 62: constraints were not propagated into a loop.
3339 * fixed bug in embedded calls of SORT (reported and investigated by
3341 * fixed some bugs revealed by Paul Dietz' test suite:
3342 ** printing and reading of arrays with some dimensions having
3343 length 0 (thanks to Gerd Moellmann);
3344 ** BOA constructor with &AUX argument without a default value does
3345 not cause a type error;
3346 ** CONSTANTP now returns true for all self-evaluating objects.
3348 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3349 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3350 accessors that are related by inheritance, as specified in the
3351 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3352 Valtteri Vuorikoski)
3353 * The compiler is now able to inline functions that were defined in
3354 a complex lexical environment (e.g. inside a MACROLET).
3355 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3357 * Support for the upcoming FreeBSD-5.0 release has been included.
3358 (thanks to Dag-Erling Smorgrav)
3359 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3360 effect when it is not in a toplevel context.
3361 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3362 stand a better chance of being correct. (thanks to Gerd
3364 * fixed bug in COERCE, which now signals an error on coercing a
3365 rational to a bounded real type which excludes the expected
3367 * The compiler is now able to derive types more accurately from the
3368 COERCE and COMPILE functions.
3369 * fixed bug 223: functional binding is considered to be constant
3370 only for symbols in the CL package.
3371 * fixed bug 231: SETQ did not check the type of a variable being set
3372 (reported by Robert E. Brown)
3373 * A new optimization for MAKE-INSTANCE has been included, fixing
3374 various bugs (including relating to :ALLOCATION :CLASS slots and
3375 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3377 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3378 ** As required by ANSI, LOOP now disallows anonymous collection
3379 clauses such as COLLECT I in conjunction with aggregate boolean
3380 clauses such as THEREIS (= I 1);
3381 ** LOOP now signals an error when any variable is reused in the
3382 same loop (including the potentially useful construct analogous
3383 to WITH A = 1 WITH A = (1+ A);
3384 ** IT is only a special loop symbol within the first clause of a
3385 conditional loop clause;
3386 ** LOOP with a typed iteration variable over a hashtable now
3387 signals a type error iff it should.
3388 * fixed some other bugs revealed by Paul Dietz' test suite:
3389 ** FILE-STREAM now names the class previously known as FD-STREAM;
3390 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3391 argument) no longer signals an error;
3392 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3393 of the slot symbol, rather than using the current package
3394 ((:CONC-NAME "") continues to intern the slot's name in the
3396 * incremented fasl file version number, because of the incompatible
3397 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3398 of the new implementation of DEFINE-COMPILER-MACRO.
3400 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3401 * Support for building SBCL for MIPS platforms running in
3402 little-endian mode has now been checked in, and basic
3403 functionality on said platforms verified.
3404 * minor incompatible change: PCL now records the pathname of a file
3405 in which methods and the like are defined, rather than its
3407 * minor incompatible change: TRUENAME now considers the truename of
3408 a file naming a directory to be the pathname with :DIRECTORY
3409 component indicating that directory.
3410 * minor incompatible change: a NAMED clause in the extended form of
3411 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3412 reason for the previous behaviour is unclear.
3413 * more systematization and improvement of CLOS and MOP conformance
3414 in PCL (thanks to Gerd Moellman and Pierre Mai):
3415 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3417 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3418 primary methods with no specializers;
3419 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3421 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3422 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3423 FORWARD-REFERENCED-CLASSes; error reporting on
3424 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3426 ** SXHASH on CLOS instances now uses a slot internal to the
3427 instance to return different numbers on distinct instances,
3428 while preserving the same return value through invocations of
3430 ** DEFMETHOD signals errors when methods with longer incongruent
3431 lambda lists are added to generic functions;
3432 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3433 CLASS, as specified in AMOP;
3434 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3435 on the order returned by the primary method for classes of
3436 class STANDARD-CLASS;
3437 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3438 * fixed some bugs shown by Paul Dietz' test suite:
3439 ** DOLIST puts its body in TAGBODY;
3440 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3442 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3443 value producing form;
3444 ** if more variables are given to PROGV than values, extra
3445 variables are bound and made to have no value;
3446 ** NSUBSTITUTE on list arguments gets the right answer with
3448 ** ELT signals an error of type TYPE-ERROR when the index argument
3449 is not a valid sequence index;
3450 ** LOOP signals (at macroexpansion time) an error of type
3451 PROGRAM-ERROR when duplicate variable names are found;
3452 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3453 ** FUNCALL of special-operators now cause an error of type
3455 ** PSETQ now works as required in the presence of side-effecting
3456 symbol-macro places;
3457 ** NCONC accepts any object as its last argument;
3458 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3460 ** loop-for-as-package does not require a package to be explicitely
3462 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3464 * fixed bug 166: compiler preserves "there is a way to go"
3465 invariant when deleting code.
3466 * fixed bug 172: macro lambda lists with required arguments after
3467 &REST arguments now cause an error to be signalled. (thanks to
3469 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3470 bug. (thanks to Matthew Danish)
3471 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3473 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3474 arguments are lexically rebound. (thanks to Gerd Moellmann and
3476 * fixed bug 194: error messages are now more informative when there
3477 is no primary method applicable in a call to a generic
3478 function. (thanks to Gerd Moellmann)
3479 * fixed bug in command line argument checking (thanks to Julian
3481 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3482 (thanks to Matthew Danish)
3483 * incremented fasl file version number, because of the
3484 SXHASH-related changes in the layout of CLOS data structures
3486 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3487 * minor incompatible change: The runtime (the Unix executable named
3488 "sbcl") is now much pickier about the .core files it will load.
3489 Essentially it now requires .core files to descend from the same
3490 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3491 as the runtime does. (The intent is to prevent the crashes which
3492 can occur, and which can even be reported as mysterious failures,
3493 when people patch the sources or change the build parameters
3494 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3495 sbcl and .core files.)
3496 * fixed bug: VALUES-LIST is no longer optimized away.
3497 * fixed bug 142: The FFI conversion of C string values to Lisp
3498 string values no longer conses excessively. (thanks to Nathan
3499 Froyd porting Raymond Toy's fix to CMU CL)
3500 * began to systematize and improve MOP conformance in PCL (thanks to
3501 Nathan Froyd, Gerd Moellman and Pierre Mai):
3502 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3504 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3505 ** FINALIZE-INHERITANCE is now called on class finalization;
3506 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3507 argument precedence order.
3508 * fixed bug 202: The compiler no longer fails on functions whose
3509 derived types contradict their declared type.
3510 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3511 so it can be non-toplevel.
3512 * The fasl file version number has changed (because of the new
3513 implementation of DEFMACRO).
3514 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3515 safe code, that any length requirement by their type-specifier
3516 argument is valid. The exceptions to this are described in bug
3518 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3519 functions now check the types of their inputs as required by ANSI.
3520 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3521 introduced symbol is DECLAREd to be SPECIAL.
3522 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3523 * fixed bug: :COUNT argument to sequence functions may be negative
3524 * fixed bug: body of DO-SYMBOLS may contain declarations
3525 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3526 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3527 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3528 symbol macro only once
3529 * fixed printing of call frame when argument list is unavailable
3530 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3531 * compiler no longer signals WARNING on unknown keyword
3534 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3535 * A beta-quality port to the mips architecture running Linux,
3536 based on the old CMUCL backend, has been made. It has been tested
3537 on a big-endian kernel, and works sufficiently well to be able to
3538 rebuild itself; it has not been tested in little-endian mode.
3539 * fixed an inconsistency between gencgc.c and purify.c which made
3540 dumping/loading .core files unreliable
3541 * fixed bug 120a: The compiler now deals correctly with IFs where
3542 the consequent is the same as the alternative, instead of
3543 misderiving the return type. (thanks to Alexey Dejneka)
3544 * fixed bug 113: Logical pathnames are now dumpable (the logical
3545 host is resolved at load-time, throwing an error if it is not
3547 * fixed bug 174: FORMAT's error message is slightly clearer when a
3548 non-printing character is used in a format directive.
3549 * fixed several bugs in compiler checking of type declarations, i.e.
3550 violations of the Python "declarations are assertions" principle
3551 (thanks to Alexey Dejneka)
3552 * fixed several bugs in PCL's error checking (thanks to Gerd
3554 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3556 * fixed bug in compilation of functions as first class values
3557 (thanks to Antonio Martinez-Shotton)
3558 * The compiler's handling TYPE-ERRORs which it can prove will
3559 inevitably happen at runtime has been cleaned up and corrected
3560 in several ways. (thanks to Alexey Dejneka)
3561 * improved argument type checking for various basic arithmetic
3562 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3563 lavished on them in the past that they can be compiled in many
3564 ways in different special cases
3565 * fixed bug 181: compiler checks validity of user supplied type
3567 * cleaned up code flushing in optimization: Function calls which
3568 should signal errors for safety purposes (e.g. which ANSI says
3569 should signal errors when their arguments are of incorrect type)
3570 are no longer optimized away.
3571 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3572 * incremented fasl file version number, because changes in the
3573 implementation of sequence functions like COERCE caused
3574 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3575 in old inline expansions) to become undefined. (Actually these
3576 changes were later undone, so we might very well be binary
3577 compatible with 0.7.7 after all, but leaving the version number
3578 incremented seemed like the simplest and most conservative
3581 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3582 * An alpha-quality port to the parisc architecture running Linux,
3583 based on the old CMUCL backend, has been made. This, even more so
3584 than the other backends, should be considered still a work in
3585 progress; known problems include that the Linux kernel in 64-bit
3586 mode does not propagate the correct sigcontext structure to
3587 userspace, and consequently SBCL on a parisc64 kernel will not
3589 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3590 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3591 suppressed.) Also now that the compiler is looking at declarations
3592 in the environment, it checks optimization declarations as well,
3593 and suppresses inlining when (> DEBUG SPEED).
3594 * More fixes have been made to treatment of floating point exception
3595 treatment and other Unix signals. In particular, floating point
3596 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3597 * The detection and handling of control stack exhaustion (infinite
3598 or very deeply nested recursion) has changed. Stack exhaustion
3599 detection is now done by write-protecting pages at the OS level
3600 and applies at all optimization settings; when found, a
3601 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3602 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3603 be caught using IGNORE-ERRORS.
3604 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3605 correctly when transforming recursive LABELS functions to LETs.
3606 (thanks to Alexey Dejneka)
3607 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3608 that are names of constants or global variables.
3609 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3610 alien routines with docstrings.
3611 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3612 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3614 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3615 (thanks to Eric Marsden)
3616 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3617 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3618 * Bug fix: The SPARC backend can now compile functions involving
3619 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3620 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3621 to a functions expecting a PATHNAME-DESIGNATOR.
3622 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3623 lambda lists. (thanks to Alexey Dejneka)
3624 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3625 functions so that EXPORTing the name of the class doesn't cause
3626 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3627 to Antonio Martinez for reporting this)
3628 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3629 constant-folded without failing an assertion. (thanks to Einar
3630 Floystad Dorum for reporting this)
3631 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3632 types are now dealt with more correctly by the compiler.
3633 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3634 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3635 behaviour analogous to RENAME-FILE. This puts its behaviour more
3636 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3638 * The fasl file version number has changed again. (because of the
3639 bug fix involving the names of PCL MAKE-INSTANCE functions)
3641 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3642 * bug fix: Floating point exceptions are treated much more
3643 consistently on the x86/Linux and PPC/Linux platforms.
3644 * Array initialization with :INITIAL-ELEMENT is now much faster for
3645 cases when the compiler cannot open code the array creation, but
3646 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3647 array accesses have also seen a speed increase.
3648 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3649 specified. (This was at the root of some bad interactions between
3650 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3652 * bug fix: Internal error arguments for undefined functions are now
3653 computed correctly on the PPC/Linux platform.
3654 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3655 Raymond Toy's patch for CMU CL)
3656 * Support for the Solaris 9 operating environment has been included
3657 (thanks to Daniel Merritt)
3658 * A very ugly but hopefully complete draft of the missing FFI chapter
3659 of the manual has been created by reformatting the corresponding
3660 CMU CL manual chapter into (currently very ugly and incoherent)
3661 DocBook and bringing it up to date for SBCL behavior. Thus, the
3662 manual is now essentially complete, at least by my extreme
3663 once-and-only-once standards, whereby it's acceptable to refer to
3664 the doc strings of SB-EXT functions as the primary documentation.
3665 * The fasl file version number has changed again, due to cleanup of
3666 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3667 is no longer a static symbol.)
3669 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3670 * SBCL now builds with OpenMCL (version 0.12) as the
3671 cross-compilation host; also, more progress has been made toward
3672 bootstrapping under CLISP.
3673 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3675 * bug 158 fixed: The compiler can now deal with integer loop
3676 increments different from 1; fixing this turned out also to fix
3678 * bug 169 fixed: no more bogus warnings about using lexical bindings
3679 despite the presence of perfectly good SPECIAL declarations (thanks
3680 to David Lichteblau)
3681 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3682 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3683 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3685 * bug 180 fixed: Method combination specifications no longer ignore
3686 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3687 * bug fix: Structure type predicate functions now check their argument
3688 count as they should.
3689 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3690 correctly. (thanks to Pierre Mai)
3691 * minor incompatible change: The --noprogrammer option is deprecated
3692 in favor of the new --disable-debugger option, which is very similar.
3693 (The major difference is that it takes effect at a slightly different
3694 time at startup, causing handling of errors in --sysinit and
3695 --userinit files will be affected differently.) The
3696 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3697 been added to allow this functionality to be controlled from ordinary
3698 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3699 maintainers, who might want to run non-interactive scripts to
3700 build SBCL cores which will later be used interactively.)
3701 * minor incompatible change: The LOAD function no longer, when given
3702 a wild pathname to load, loads all files matching that pathname.
3703 Instead, an error of type FILE-ERROR is signalled.
3705 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3706 * bug 147 fixed: The compiler preserves its block link/count
3707 invariants more correctly now so that it doesn't crash. (thanks
3709 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3711 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3712 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3713 no-value-for-this-character as NIL (as specified by ANSI).
3714 * HOST-NAMESTRING on physical pathnames now returns a string that is
3715 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3716 (thanks to Christophe Rhodes)
3717 * The Alpha port handles icache flushing more correctly. (thanks to
3719 * More progress has been made toward bootstrapping under CLISP. (thanks
3720 to Christophe Rhodes)
3721 * The fasl file format has changed again, because dynamic loading
3722 on OpenBSD (which has non-ELF object files) motivated some cleanups
3723 in the way that foreign symbols are transformed and passed around.
3724 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3725 is no longer treated as whitespace by the reader, but instead as
3726 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
3727 |A
\x7fB|, instead of A as it used to.
3729 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3730 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3731 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3732 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3733 this as of 0.7.1.45, but was left out of the previous news section
3734 (thanks to Dan Barlow)
3735 * SBCL now runs on the Solaris operating system on SPARC architectures
3736 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3737 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3738 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3739 * SPARC backend cleanups, allowing builds of cores optimized for V8
3740 and V9 SPARCS, and also emission of code targeted to a particular
3741 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3743 * SBCL is closer to bootstrapping under CLISP, thanks to various
3744 fixes by Christophe Rhodes.
3745 * The fasl file format has changed again, to allow the compiler's
3746 INFO database to support symbol macros.
3747 * The user manual (in doc/) is formatted into HTML more nicely.
3748 (thanks to coreythomas)
3749 * The system is smarter about SUBTYPEP relationships, especially
3750 those involving NOT types (including types such as ATOM which are
3751 represented internally using NOT types). Thus SUBTYPEP is less
3752 likely to return (VALUES NIL NIL) in general, and in particular
3753 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3755 * The fasl file format has changed again, because the internal
3756 representation of types now includes a new slot to support the new
3757 SUBTYPEP-of-NOT-types logic.
3758 * (not a change in the main branch of SBCL, but a related prototype
3759 which can hopefully be merged into the main branch of SBCL in the
3760 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3761 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3762 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3763 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3764 dispatch macro character combinations. (thanks to Alexey Dejneka)
3765 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3766 that superficially look like logical namestrings correctly.
3767 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3769 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3770 default supplied-p) for &optional and &key arguments. (thanks to
3773 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3774 * incompatible change: The compiler is now less aggressive about
3775 tail call optimization, doing it only when (> SPACE DEBUG) or
3776 (> SPEED DEBUG). (This is an incompatible change because there are
3777 programs which relied on the old CMU-CL-style behavior to optimize
3778 away their unbounded recursion which will now die of stack overflow.)
3779 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3780 for non-GENCGC systems has been increased to 20M (since that
3781 seems much closer to the likely performance optimum for modern
3782 systems than the old 4M value was)
3783 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3784 and *DEBUG-PRINT-LEVEL*
3785 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3786 of CMU CL's support for SPARC, and various endianness and other
3787 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3788 * new syntactic sugar for the Unix command line: --load foo.bar is now
3789 an alternate notation for --eval '(load "foo.bar")'.
3791 ** The system now detects stack overflow and handles it gracefully,
3792 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3793 optimization settings. (This is a good thing in general, and
3794 its introduction in this version should be particularly timely
3795 for anyone whose code fails because of suppression of tail
3797 ** The system now hunts for the C variable "environ" in a more
3798 devious way, to avoid segfaults when the C library version differs
3799 between compile time and run time. (thanks to Christophe Rhodes)
3800 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3801 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3802 ** The compiler no longer issues bogus style warnings for undefined
3803 classes in the same source file as the DEFCLASSes which defined
3804 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3806 ** fixes in CONDITION class precedence list for undefined function
3807 errors (thanks to Alexei Dejneka)
3808 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3809 correctly. (thanks to Dan Barlow)
3810 ** portability fixes aiming at bootstrapping under CLISP (thanks
3811 to Dave McDonald and Christophe Rhodes)
3812 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3813 ** fixes in type translation and and type inference (thanks to
3815 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3816 ** various fixes in the new ports (thanks to Dan Barlow)
3817 * several changes related to debugging:
3818 ** suppression of tail recursion, as noted above
3819 ** stack overflow detection, as noted above
3820 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3821 is now the default. (For some time encapsulation has been more
3822 reliable than the breakpoint-based :ENCAPSULATE NIL
3823 implementation, at least on X86 systems; and I just noticed that
3824 encapsulation also seems closer to the spirit of the ANSI
3827 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3829 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3830 up properly again. (There was a packaging bug in 0.7.0 which
3831 left their definitions in SB-SYS::LOAD-FOREIGN and
3832 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3833 vital for most things which interface to C-level interfaces,
3834 like extensions working with sockets or databases or
3835 Perl-compatible regexes or whatever, and the need to fix
3836 this bug is the main reason that 0.7.1 was released so
3838 ** DEFGENERIC is now choosier about the methods it redefines, so that
3839 reLOADing a previously-LOADed file containing DEFGENERICs does
3840 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3841 cycle now works as it should. (thanks to Alexey Dejneka)
3842 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3843 fixed by Christophe Rhodes. (He actually submitted this patch
3844 months ago, and I delayed until after 0.7.0.)
3845 ** Bug 111 (internal compiler confusion about runtime checks on
3846 FUNCTION types) was fixed by Alexey Dejneka.
3847 * Some internal cleanups (getting rid of variables which aren't
3848 needed now that the byte interpreter is gone) caused the fasl
3849 file format number to change again.
3851 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3852 * major incompatible change: The default fasl file extension, i.e. the
3853 default extension for files produced by COMPILE-FILE, has changed
3854 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3856 ** There are many changes in the implementation of the compiler.
3857 SBCL is now essentially a compiler-only implementation of ANSI
3858 Common Lisp. EVAL still "interprets" a few special cases, but
3859 almost all the interesting cases are handled by creating
3860 a LAMBDA expression, calling COMPILE on it, then calling
3861 FUNCALL on the result.
3862 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3863 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3864 Since the code is newer, there might still be some new bugs
3865 (though not as many as before Martin Atzmueller's fixes:-). But
3866 the new code is substantially simpler and clearer, and hopefully
3867 any remaining bugs will be simpler, less fundamental, and more
3868 fixable then the bugs in the old code.
3869 ** The revised compiler is still a little unsteady on its feet.
3871 *** The debugging information it produces (particularly the names
3872 of FUNCTION objects) is sometimes much less useful than what
3873 the old compiler produced.
3874 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3875 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3876 within a MACROLET) has been temporarily weakened.
3877 ** There are new compiler optimizations for various functions:
3878 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3879 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3880 *** the math functions TRUNCATE, FLOOR, and CEILING
3881 *** the function-of-all-trades COERCE
3882 Mostly these should be transparent, but there's one
3883 potentially-annoying problem (bug 117): when the compiler
3884 inline-expands a function and does type analysis on the result,
3885 it can create control paths which have type mismatches, and
3886 when it can't prove that those control paths aren't taken,
3887 it will issue WARNINGs about the type mismatches. This is
3888 a particular problem in practice for the new sequence functions.
3889 It's not clear how this should be fixed, and for now, a
3890 workaround is given in the entry for 117 in the BUGS file.
3891 ** (Because of the interaction between the two previous items --
3892 occasional inlining problems and new inline expansions -- some
3893 of the new sequence function optimizations won't really kick in
3894 completely until debugging information, and then inlining, are
3895 straightened out in some future version.)
3896 * minor incompatible changes:
3897 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3898 DIRECTORY no longer implicitly promotes NIL slots of its
3899 pathname argument to :WILD. In particular, when you ask for the
3900 contents of a directory (which you used to be able to do without
3901 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3902 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3903 ** changes in behavior that ANSI explicitly defines to be
3904 implementation dependent:
3905 *** The new compiler-only implementation still conforms with ANSI,
3906 but acts a little different than before. Besides the obvious
3907 changes in performance tradeoffs (that the cost per form passed
3908 to EVAL has gone up, and the cost per form executed by EVAL
3909 has gone down), the behavior of the system changes a little
3910 because there are no longer any interpreted function objects.
3911 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3912 e.g. doing COMPILE on the output of interactive DEFUN is
3914 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3916 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3917 has changed from (:CL) to NIL.
3918 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3919 e.g. #\Newline and #\Tab, don't have names specified in the
3920 ANSI Common Lisp standard, is now based on their ASCII symbolic
3921 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3922 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3923 are no longer used for output.
3924 ** changes in internal implementation constants:
3925 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3926 4 million. (If your application spends a lot of time GCing and
3927 you have a lot of RAM, you might want to experiment with
3928 increasing it even more.)
3929 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3930 However, almost all old code should still continue to work without
3931 immediate update, as SB-C-CALL is now a (deprecated) nickname
3933 ** Old operator names in the style DEF-FOO are now deprecated in
3934 favor of new corresponding names DEFINE-FOO, for consistency with
3935 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3936 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3937 internal symbols, but a few supported extensions like
3938 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3939 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3940 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3941 etc. as you get deeper into recursive calls to the debugger
3942 command loop, instead of the old "5]", "5]]", "5]]]"
3943 sequence. (I was motivated to do this when squabbles between
3944 ILISP and SBCL left me very deeply nested in the debugger. In the
3945 short term, this change will probably provoke more ILISP/SBCL
3946 squabbles, but hopefully it will be an improvement in the long run.)
3947 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3948 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3949 function, since declaiming return types involving aliens is
3950 (1) annoyingly messy to do by hand and (2) vital to efficient
3951 compilation of code which calls such functions.
3952 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3953 longer reexported by the SB-EXT package. They're solely useful
3954 for alien code, so it seems more logical that you should get
3955 them from the SB-ALIEN package, not in SB-EXT.
3956 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3957 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3958 features. Instead, the code that they used to control is always
3959 built into the system.
3960 * many other bug fixes
3961 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3962 advantage of the new EVAL-WHEN stuff and to clean them up in
3963 general, and they are now more ANSI-compliant in a number of
3964 ways. Martin Atzmueller is responsible for a lot of this.
3965 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3967 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3968 *** correct ERROR type for various file operations
3969 *** some fixes for Lisp streams
3970 *** DEFMETHOD syntax checking
3971 *** changing old weird representation of debug information as
3972 strings (which, among their other deficiencies, don't transform
3973 correctly when you rename packages, and don't change their
3974 print representation when you change things like *PACKAGE*
3975 and *PRINT-LENGTH*) to symbols and lists of symbols
3976 He also made several improvements and fixed several bugs in DESCRIBE.
3977 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3979 *** misbehavior of WRITE-STRING/WRITE-LINE
3980 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3981 and several other LOOP problems as well
3982 *** DIRECTORY when similar filenames are present
3983 *** DEFGENERIC with :METHOD options
3984 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3985 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3986 *** argument ordering in FIND with :TEST option
3987 *** mishandled package designator argument in APROPOS-LIST
3988 *** various problems in the backquote readmacro
3989 *** a bug in APROPOS
3990 *** probably some others that I'm not describing very well here,
3991 since the CVS log documents them by reference to sbcl-devel
3992 messages, and the SourceForge archives aren't working well.:-(
3993 ** Dan Barlow improved the Alpha port (and is making progress on the
3994 PPC port, for those of you who think different).
3995 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3996 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3997 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3998 continues to work on the SPARC port (for those of you in a position
3999 to look down upon our little PC-compatible boxes from a great height).
4000 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4001 and uses that copy, rather than the current dynamic value, when
4002 it's trying to decide whether to truncate output. Thus e.g.
4003 (let ((*print-lines* 50))
4004 (pprint-logical-block (stream nil)
4006 (let ((*print-lines* 8))
4007 (print (aref possiblybigthings i) stream)))))
4008 should now truncate the logical block only at 50 lines, instead of
4009 often truncating it at 8 lines, as it did before.
4010 * The doc/cmucl/ directory, containing old CMU CL documentation
4011 from the time of the fork, is no longer part of the base system.
4012 SourceForge has shut down its anonymous FTP service, and with it
4013 my original plan for distributing the old CMU CL documentation
4014 there. For now, if you need these files you can download an old
4015 SBCL source release and extract them from it.
4016 * The fasl file version number changed again, for dozens of reasons,
4017 some of which are apparent above.
4019 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4020 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4021 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4022 patch, so that DISASSEMBLE output is much nicer.
4023 * The code in the SB-PROFILE package now seems reasonably stable.
4024 I still haven't decided what the final interface should look like
4025 (I'd like PROFILE to interact cleanly with TRACE, since both
4026 facilities use function encapsulation) but if you have a need
4027 for profiling now, you can probably use it successfully with
4028 the current CMU-CL-style interface.
4029 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4030 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4031 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4032 link now returns the dangling link itself, and for similar
4033 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4034 link itself. (In these cases the old code signalled an error and
4035 looped endlessly, respectively.) Thus, DIRECTORY now works even
4036 in the presence of dangling and cyclic symbolic links.
4037 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4038 is now a supported extension again, since the consensus on
4039 sbcl-devel was that it can be useful for ordinary development
4040 work, not just for debugging SBCL itself.
4041 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4042 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4043 that currently-defined functions might be redefined later with
4044 different return types.
4045 * Hash tables can be printed readably, as inspired by CMU CL code
4046 of Eric Marsden and SBCL code of Martin Atzmueller.
4047 * better error handling in CLOS method combination, thanks to
4048 Martin Atzmueller porting Pierre Mai's CMU CL patches
4049 * more overflow fixes for >16Mbyte I/O buffers
4050 * A bug in READ has been fixed, so that now a single Ctrl-D
4051 character suffices to cause end-of-file on character streams.
4052 In particular, now you only need one Ctrl-D at the command
4053 line (not two) to exit SBCL.
4054 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4056 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4057 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4058 does the right thing.
4059 * The implementation of some type tests, especially for CONDITION
4060 types, is now tidier and maybe faster, due to CMU CL code
4061 originally by Douglas Crosher, ported by Martin Atzmueller.
4062 * Some math functions have been fixed, and there are new
4063 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4064 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4065 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4066 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4067 likely to be built into sbcl-0.7.0.)
4068 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4069 CL, ported to SBCL by Martin Atzmueller)
4070 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4071 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4072 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4073 * There's a new slam.sh hack to shorten the edit/compile/debug
4074 cycle for low-level changes to SBCL itself, and a new
4075 :SB-AFTER-XC-CORE target feature to control the generation of
4076 the after-xc.core file needed by slam.sh.
4077 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4078 COMPILE-FILE is no longer supported, so that now every function
4079 gets an entry point, so that block compilation looks a little
4080 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4081 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4082 returns the number of bytes consed since the system started,
4083 rather than the number consed since the first time the function
4084 was called. (The new definition parallels ANSI functions like
4085 CL:GET-INTERNAL-RUN-TIME.)
4086 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4087 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4088 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4089 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4090 * Fasl file version numbers are now independent of the target CPU,
4091 since historically most system changes which required version
4092 number changes have affected all CPUs equally. Similarly,
4093 the byte fasl file version is now equal to the ordinary
4096 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4097 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4098 is no longer recognized. I apologize for this, because it was
4099 listed in SB-EXT as a supported extension, but I found that
4100 its existing behavior was poorly specified, as well as incorrectly
4101 specified, and it looked like too much of a mess to straighten it
4102 out. I have enough on my hands trying to get ANSI stuff to work..
4103 * many patches ported from CMU CL by Martin Atzmueller, with
4104 half a dozen bug fixes in pretty-printing and the debugger, and
4105 half a dozen others elsewhere
4106 * fixed bug 13: Floating point infinities are now supported again.
4107 They might still be a little bit flaky, but thanks to bug reports
4108 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4109 as flaky as they were.
4110 * The --noprogrammer command line option is now supported. (Its
4111 behavior is slightly different in detail from what the old man
4112 page claimed it would do, but it's still appropriate under the
4113 same circumstances that the man page talks about.)
4114 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4115 are now supported, and enabled by default. Thus, the compiler can
4116 handle many floating point and complex operations much less
4117 inefficiently. (Thus e.g. you can implement a complex FFT
4119 * The compiler now detects type mismatches between DECLAIM FTYPE
4120 and DEFUN better, and implements CHECK-TYPE more correctly, and
4121 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4122 thanks to patches from Martin Atzmueller.
4123 * various fixes to make the cross-compiler more portable to
4124 ANSI-conforming-but-different cross-compilation hosts (notably
4125 Lispworks for Windows, following bug reports from Arthur Lemmens)
4126 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4127 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4128 fixed thanks to Pierre Mai's CMU CL patches.
4129 * fixes to keep the system from overflowing internal counters when
4130 it tries to use i/o buffers larger than 16M bytes
4131 * fixed bug 45a: Various internal functions required to support
4132 complex special functions have been merged from CMU CL sources.
4133 (When I was first setting up SBCL, I misunderstood a compile-time
4134 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4135 * improved support for type intersection and union, fixing bug 12
4136 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4137 more obscure bugs as well
4138 * some steps toward byte-compiling non-performance-critical
4139 parts of the system, courtesy of patches from Martin Atzmueller
4140 * Christophe Rhodes has made some debian packages of sbcl at
4141 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4142 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4143 stable, but are nonetheless usable. When he's ready, I'd be happy
4144 to add them to the SourceForge "File Releases" section. (And if
4145 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4146 * new fasl file format version number (because of changes in
4147 internal representation of (OR ..) types to accommodate the new
4148 support for (AND ..) types, among other things)
4150 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4151 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4153 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4155 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4156 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4157 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4158 * DESCRIBE now works on structure objects again.
4159 * Most function call argument type mismatches are now handled as
4160 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4161 know whether the function will be redefined before the call is
4162 executed. (The compiler could flag local calls with full WARNINGs,
4163 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4164 it doesn't keep track of enough information to know whether calls
4165 are local in this sense.)
4166 * Compiler output is now more verbose, with messages truncated
4167 later than before. (There should be some supported way for users
4168 to override the default verbosity, but I haven't decided how to
4169 provide it yet, so this behavior is still controlled by the internal
4170 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4171 src/compiler/ir1util.lisp.)
4172 * Fasl file format version numbers have increased again, because
4173 support for the Gray streams extension changes the layout of the
4174 system's STREAM objects.
4175 * The Gray subclassable streams extension now works, thanks to a
4176 patch from Martin Atzmueller.
4177 * The full LOAD-FOREIGN extension (not just the primitive
4178 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4179 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4180 but like most other programs, it defaults to copying the Unix
4181 environment from the original process instead of starting the
4182 new process in an empty environment.
4183 * Extensions which manipulate the Unix environment now support
4184 an :ENVIRONMENT keyword option which doesn't smash case or
4185 do other bad things. The CMU-CL-style :ENV option is retained
4186 for porting convenience.
4187 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4188 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4190 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4192 * A patch from Martin Atzmueller seems to have solved the SIGINT
4193 problem, and as far as we know, signal-handling now works cleanly.
4194 (If you find any new bugs, please report them!)
4195 * The system no longer defaults Lisp source file names to types
4196 ".l", ".cl", or ".lsp", but only to ".lisp".
4197 * The compiler no longer uses special default file extensions for
4198 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4199 seems to expect a single default extension for all compiled code,
4200 and there's no compelling reason to try to stretch the standard
4201 to allow two different extensions.) Instead, byte-compiled files
4202 default to the same extension as native-compiled files.
4203 * Fasl file format version numbers have increased again, because
4204 a rearrangement of internal implementation packages made some
4205 dumped symbols in old fasl files unreadable in new cores.
4206 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4207 many fewer weird special cases.
4208 * Bug #17 (differing COMPILE-FILE behavior between logical and
4209 physical pathnames) has been fixed, and some related misbehavior too,
4210 thanks to a patch from Martin Atzmueller.
4211 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4212 by Tim Moore, ported to SBCL by Martin Atzmueller.
4213 * Martin Atzmueller fixed several filesystem-related problems,
4214 including bug #36, in part by porting CMU CL patches, which were
4215 written in part by Paul Werkowski.
4216 * More compiler warnings in src/runtime/ are gone, thanks to
4217 more patches from Martin Atzmueller.
4218 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4221 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4223 * DESCRIBE now works on CONDITION objects.
4224 * The debugger now handles errors which arise when trying to print
4225 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4227 * The build system now uses an additional file, customize-target-features.lisp,
4228 to allow local modifications to the target *FEATURES* list. (The point of
4229 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4230 debugging features enabled, without having to worry about propagating it
4231 into everyone's system when I do a "cvs update".) When no
4232 customize-target-features.lisp file exists, the target *FEATURES* list
4233 should be constructed the same way as before.
4234 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4235 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4236 warn about behavior which is undefined under the ANSI spec. Note: This
4237 is specified by ANSI, but it's not very popular with programmers.
4238 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4239 macro in the SBCL sources for an example of a workaround which you
4240 might use to make portable ANSI-standard code which does what you want.
4241 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4242 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4243 when it's used as a non-toplevel form. (This is required in order
4244 to implement the DEFCONSTANT-EQX macro.)
4245 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4246 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4247 funny things, due to bugs in the implementation of EVAL-WHEN
4248 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4249 non-toplevel DEFCONSTANTs are uncommon.)
4250 * The core file version number and fasl file version number have been
4251 incremented, because the old noncompliant DEFCONSTANT behavior involved
4252 calling functions which no longer exist, and because I also took the
4253 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4254 * fixed bug 1 (error handling before read-eval-print loop starts), and
4255 redid debugger restarts and related debugger commands somewhat while
4257 ** The QUIT debugger command is gone, since it did something
4258 rather different than the SB-EXT:QUIT command, and since it never
4259 worked properly outside the main toplevel read/eval/print loop.
4260 Invoking the new TOPLEVEL restart provides the same functionality.
4261 ** The GO debugger command is also gone, since you can just invoke
4262 the CONTINUE restart directly instead.
4263 ** The TOP debugger command is also gone, since it's redundant with the
4264 FRAME 0 command, and since it interfered with abbreviations for the
4266 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4268 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4269 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4270 some porting work by Martin Atzmueller)
4271 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4272 with a boatload of patches which he ported to SBCL. Now that those
4274 ** The system tries to make sure that its low-priority messages
4275 are prefixed by semicolons, to help people who like to use
4276 syntax highlighting in their ILISP buffer. (This patch
4277 was originally due to Raymond Toy.)
4278 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4279 patches originally written by Raymond Toy.
4280 ** The compiler understands coercion between single-value and
4281 multiple-VALUES type expressions better, getting rid of some very
4282 weird behavior, thanks to patches originally by Robert MacLachlan
4283 and Douglas Crosher.
4284 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4285 lambda lists, thanks to a patch originally by Pierre Mai.
4286 ** The system no longer bogusly warns about "abbreviated type
4288 ** The compiler gets less confused by inlining and RETURN-FROM,
4289 thanks to some patches originally by Tim Moore.
4290 ** The system no longer hangs when dumping circular lists to fasl
4291 files, thanks to a patch originally from Douglas Crosher.
4292 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4293 undefined function error.
4294 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4295 in structure slot initforms) for now, documented workaround instead:-|
4296 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4297 * fixed bug 5: added stubs for various Gray stream functions called
4298 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4299 installed, at least appropriate type errors are generated
4300 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4301 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4302 consistently in DEFMETHOD forms.
4303 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4304 it doesn't seem to affect SBCL after all
4305 * The C runtime system now builds with better optimization and many
4306 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4308 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4310 * The system is now under CVS at SourceForge (instead of the
4311 CVS repository on my home machine).
4312 * The new signal handling code has been tweaked to treat register
4313 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4314 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4315 downstream, e.g. in debug-int.lisp, has implicit dependencies
4316 on the unsignedness of integer representation of machine words,
4317 and that caused the system to bomb out with infinite regress
4318 when trying to recover from type errors involving signed values,
4319 e.g. (BUTLAST '(1 2 3) -1).)
4320 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4321 (This was one of the bugs Peter Van Eynde reported back in July.)
4322 * The system now uses code inspired by Colin Walters' O(N)
4323 implementation of MAP (from the cmucl-imp@cons.org mailing
4324 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4325 inline the MAP operation, and there is more than one
4326 sequence argument to the MAP call (so that it can't just
4327 do ETYPECASE once and for all based on the type of the
4328 single sequence argument). (The old non-inline implementation
4329 of the general M-argument sequence-of-length-N case required
4330 O(M*N*N) time when any of the sequence arguments were LISTs.)
4331 * The QUIT :UNIX-CODE keyword argument has been renamed to
4332 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4333 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4335 * Raymond Wiker's patches to port dynamic loading from Linux to
4336 FreeBSD have been added.
4337 * The BUGS file is now more nearly up to date, thanks in large part
4338 to Martin Atzmueller's review of it.
4339 * The debugger now flushes standard output streams before it begins
4340 its output ("debugger invoked" and so forth).
4341 * The core version number and fasl file version number have both
4342 been incremented, because of incompatible changes in the layout
4344 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4345 used to not be called for a saved Lisp image.)
4346 * Martin Atzmueller's version of a patch to fix a compiler crash,
4347 as posted on sbcl-devel 13 September 2000, has been installed.
4348 * Instead of installing Martin Atzmueller's patch for the
4349 compiler transform for SUBSEQ, I deleted the compiler transform,
4350 and transforms for some similar consing operations.
4351 * A bug in signal handling which kept TRACE from working on OpenBSD
4353 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4354 away by constant folding
4355 * The system now defines its address space constants in one place
4356 (in the Lisp sources), and propagates them automatically elsewhere
4357 (through GENESIS and the sbcl.h file). Therefore, patching the
4358 address map is less unnecessarily tedious and error-prone. The
4359 Lisp names of address space constants have also been systematized.
4360 * CVS tags like dollar-Header-dollar have been removed from
4361 the sources, because they have never saved me trouble and
4362 they've been source of trouble working with patches and other
4363 diff-related operations.
4364 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4365 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4367 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4369 * The system has been ported to OpenBSD.
4370 * The system now compiles with a simple "sh make.sh" on the systems
4371 that it's supported on. I.e., now you no longer need to tweak
4372 text in the target-features.lisp-expr and symlinks in src/runtime/
4373 by hand, the make.sh takes care of it for you.
4374 * The system is no longer so grossly inefficient when compiling code
4375 involving vectors implemented as general (not simple) vectors (VECTOR T),
4376 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4377 which dares to use the various sequence functions on non-simple
4378 vectors, takes less of a performance hit.
4379 * There is now a primitive type predicate VECTOR-T-P
4380 to test for the (VECTOR T) type, so that e.g.
4381 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4382 can now be compiled with some semblance of efficiency. (The old code
4383 turned the type declaration into a full call to %TYPEP at runtime!)
4384 * AREF on (VECTOR T) is still not fast, since it's still compiled
4385 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4386 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4387 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4388 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4389 without making full calls to SUBTYPEP at runtime.
4390 (Some analogous efficiency issues for non-simple vectors specialized to
4391 element types other than T, or for non-simple multidimensional arrays,
4392 have not been addressed. They could almost certainly be handled the
4393 same way if anyone is motivated to do so.)
4394 * The changes in array handling break binary compatibility, so
4395 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4396 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4397 instead of (VALUES T T).
4398 * By following the instructions that Dan Barlow posted to sbcl-devel
4399 on 2 July 2000, I was able to enable primitive dynamic object
4400 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4401 functionality is not implemented (since it calls ld to resolve
4402 library references automatically, requiring RUN-PROGRAM for its
4403 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4404 try to resolve library references) is now supported.
4405 * The system now flushes the standard output streams when it terminates,
4406 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4407 them at several other probably-convenient times, e.g. in each pass of
4408 the toplevel read-eval-print loop, and after evaluating a form given
4409 as an "--eval" command-line option. (These changes were motivated by a
4410 discussion of stream flushing issues on cmucl-imp in August 2000.)
4411 * The source transform for TYPEP of array types no longer assumes
4412 that an array whose element type is a not-yet-defined type
4413 is implemented as an array of T, but instead punts, so that the
4414 type will be interpreted at runtime.
4415 * There is now some support for cross-compiling in make.sh: each of
4416 the phases of make.sh has its own script. (This should be transparent
4417 to people doing ordinary, non-cross-compile builds.)
4418 * Since my laptop doesn't have hundreds of megabytes of memory like
4419 my desktop machine, I became more motivated to do some items on
4420 my to-do list in order to reduce the size of the system a little:
4421 ** Arrange for various needed-only-at-cold-init things to be
4422 uninterned after cold init. To support this, those things have
4423 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4424 symbols with such names are now uninterned after cold init).
4425 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4426 fasl files for cold load.
4427 ** Remove the old compiler structure pooling code (which used to
4428 be conditional on the target feature :SB-ALLOC) completely.
4429 ** Redo the representation of some data in cold init to be more compact.
4430 (I also looked into supporting byte compiled code at bootstrap time,
4431 which would probably reduce the size of the system a lot, but that
4432 looked too complicated, so I punted for now.)
4433 * The maximum signal nesting depth in the src/runtime/ support code has
4434 been reduced from 4096 to 256. (I don't know any reason for the very
4435 large old value. If the new smaller value turns out to break something,
4436 I'll probably just bump it back up.)
4437 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4439 * Many, many bugs reported by Peter Van Eynde have been added to
4440 the BUGS list; some have even been fixed.
4441 * While enabling dynamic object file loading, I tried to make the
4442 code easier to understand, renaming various functions and variables
4443 with less ambiguous names, and changing some function calling
4444 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4445 * While trying to figure out how to do the OpenBSD port, I tried to
4446 clean up some of the code in src/runtime/. In particular, I dropped
4447 support for non-POSIX signal handling, added various comments,
4448 tweaked the code to reduce the number of compilation warnings, and
4449 renamed some files to increase consistency.
4450 * To support the new automatic configuration functionality in make.sh,
4451 the source file target-features.lisp-expr has been replaced with the
4452 source file base-target-features.lisp-expr and the machine-generated
4453 file local-target-features.lisp-expr.
4454 * fixed a stupid quoting error in make.sh so that using CMU CL
4455 "lisp -batch" as cross-compilation host works again
4457 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4459 * DESCRIBE no longer tries to call itself recursively to describe
4460 bound/fbound values, so that it no longer fails on symbols which are
4461 bound to themselves (like keywords, T, and NIL).
4462 * DESCRIBE now works on generic functions.
4463 * The printer now prints less-screwed-up representations of closures
4464 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4465 * A private symbol is used instead of the :EMPTY keyword previously
4466 used to mark empty slots in hash tables. Thus
4467 (DEFVAR *HT* (MAKE-HASH-TABLE))
4468 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4469 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4470 now does what ANSI says that it should. (You can still get
4471 similar noncompliant behavior if bang on the hash table
4472 implementation with all the symbols you get back from
4473 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4474 This breaks binary compatibility, since tests for equality to
4475 :EMPTY are wired into things like the macroexpansion of
4476 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4478 * There's now a minimal placeholder implementation for CL:STEP,
4479 as required by ANSI.
4480 * An obscure bug in the interaction of the normal compiler, the byte
4481 compiler, inlining, and structure predicates has been patched
4482 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4483 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4485 * Missing ordinary arguments in a macro call are now detected even
4486 when the macro lambda list contains &KEY or &REST.
4487 * The debugger no longer complains about encountering the top of the
4488 stack when you type "FRAME 0" to explicitly instruct it to go to
4489 the top of the stack. And it now prints the frame you request even
4490 if it's the current frame (instead of saying "You are here.").
4491 * As specified by ANSI, the system now always prints keywords
4492 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4494 * The default initial SIZE of HASH-TABLEs is now smaller.
4495 * Type information from CLOS class dispatch is now propagated
4496 into DEFMETHOD bodies, so that e.g.
4497 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4499 is now basically equivalent to
4500 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4501 (DECLARE (TYPE SINGLE-FLOAT X))
4503 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4504 operation, without having to do run-time type dispatch.
4505 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4506 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4507 * Since I don't seem to be making big file reorganizations very often
4508 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4509 is overflowing my ability to conveniently back them up), I've finally
4510 checked the system into CVS. (The CVS repository is on my home system,
4511 not at SourceForge -- putting it on SourceForge might come later.)
4512 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4513 high-level GC-NOTIFY-FOO functions send their output. (There's
4514 still very little control of where low-level verbose GC functions
4515 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4516 less than it used to -- the GC-NOTIFY-FOO functions are now under
4517 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4518 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4519 in only one place in the source code, and propagates it automatically
4520 everywhere that it's needed. Thus e.g. when I bump the version from
4521 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4522 * The C source files now include boilerplate legalese and documentation
4523 at the head of each file (just as the Lisp source files already did).
4524 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4525 to his page will be replaced with a link to his new CLiki service.
4527 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4529 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4530 * The build process now looks for GNU make under the default name "gmake",
4531 instead of "make" as it used to. If GNU make is not available as "gmake"
4532 on your system, you can change this default behavior by setting the
4533 GNUMAKE environment variable.
4534 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4535 can build without error under CMU CL.
4537 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4539 * There is now a partial SBCL user manual (with some new text and some
4540 text cribbed from the CMU CL manual).
4541 * The beginnings of a profiler have been added (starting with the
4542 CMU CL profiler and simplifying and cleaning up). Eventually the
4543 main interface should be through the TRACE macro, but for now,
4544 it's still accessed through vaguely CMU-CL-style functions and macros
4545 exported from the package SB-PROFILE.
4546 * Some problems left over from porting CMU CL to the new
4547 cross-compilation bootstrap process have been cleaned up:
4548 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4549 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4550 part when getting rid of the compiler *BACKEND* stuff.)
4551 ** The value of *NULL-TYPE* was screwed up, because it was
4552 being initialized before the type system knew the final
4553 definition of the 'NULL type. This screwed up several key
4554 optimizations in the compiler, causing inefficiency in all sorts
4555 of places. (I found it because I wanted to understand why
4556 GET-INTERNAL-RUN-TIME was consing.)
4557 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4558 PROCLAIM FTYPE information. Unfortunately this broke binary
4559 compatibility again, since now the forms output by DEFGENERIC
4560 to refer to functions which didn't exist in 0.6.3.
4561 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4562 can use the new (as of 0.6.3) transform for SOME into MAP into
4564 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4565 values to (INTEGER 0 1000000), so that the time code will no longer
4566 occasionally get blown up by Linux returning 1000000 microseconds
4567 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4568 its output conform to the ANSI spec. (Alas, this makes its output
4569 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4570 * A full call to MAP NIL with a single sequence argument no longer conses.
4571 * fixes to problems pointed out by Martin Atzmueller:
4572 * The manual page no longer talks about multiprocessing as though
4573 it were currently supported.
4574 * The ILISP support patches have been removed from the distribution,
4575 because as of version 5.10.1, ILISP now supports SBCL without us
4576 having to maintain patches.
4577 * added a modified version of Raymond Toy's recent CMU CL patch for
4578 EQUALP comparison of HASH-TABLE
4580 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4582 * The system still can't cross-compile itself with
4583 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4584 entails), but at least it can compile more of itself that way
4585 than it used to be able to, and various buglets which were uncovered
4586 by trying to cross-compile itself that way have now been fixed.
4587 * This release breaks binary compatibility again. This time
4588 at least I've incremented the FASL file format version to 2, so that the
4589 problem can be detected reliably instead of just causing weird errors.
4590 * various new style warnings:
4591 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4592 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4593 ** using the lexical binding of a variable named in the *FOO* style
4594 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4595 as specified by ANSI.
4596 * *RANDOM-STATE* is no longer automatically initialized from
4597 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4598 default behavior of the system is to repeat its behavior every time
4599 it's run. If you'd like to change this behavior, you can always
4600 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4601 old convention there was no comparably easy way to get the system to
4602 repeat its behavior every time it was run.
4603 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4604 FTYPE declarations has been removed, in favor of their ANSI
4605 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4606 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4607 the types of their sequence arguments can be determined at compile time.
4608 This is done through a new open code expansion for MAP which eliminates
4609 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4610 argument types can be determined at compile time.
4611 * The optimizer now transforms COERCE into an identity operation when it
4612 can prove that the coerced object is already of the correct type. (This
4613 can be a win for machine generated code, including the output of other
4614 optimization transforms, such as the MAP transform above.)
4615 * Credit information has been moved from source file headers into CREDITS.
4616 * Source file headers have been made more standard.
4617 * The CASE macro now compiles without complaining even when it has
4620 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4622 * (Note that the way that the PCL macroexpansions were rewritten
4623 to accommodate the change in DEFGENERIC below breaks binary
4624 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4625 not run under sbcl-0.6.2. Once we get out of alpha releases,
4626 i.e. hit release 1.0.0, we'll probably try to maintain binary
4627 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4628 and sbcl-1.4.4. Until then, however, it might be fairly common
4629 for maintenance releases to break binary compatibility.)
4630 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4632 * The reporting of unhandled signals has been changed to print some
4633 explanatory text as well as the report form. (Previously only
4634 the report form was printed.)
4635 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4636 it defines, so that the compiler no longer issues undefined function
4637 warnings for compiled-but-not-yet-loaded generic functions.
4638 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4639 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4640 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4641 section of the ANSI spec are supported.
4642 * The "" nickname for the "KEYWORD" package has been removed.
4643 The reader still handles symbol tokens which begin with a package marker
4644 as keywords, but it doesn't expose its mechanism for doing so in the
4645 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4646 * The system now issues STYLE-WARNINGs for contradictory TYPE
4647 proclamations. (Warnings for contradictory FTYPE proclamations would
4648 be nice too, but those can't be done usefully unless the type system
4649 is made smarter about FUNCTION types.)
4650 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4651 systematized, so that "*target-*.lisp is supposed to exist only on the
4652 target and imply that there's a related file which exists on the
4653 host, and *host-*.lisp is supposed to exist only on the host and imply
4654 that there's a related file which exists on the target. This involves a
4655 lot of renaming. Hopefully the acute confusion caused by the renaming
4656 will be justified by the reduction in chronic confusion..
4657 ** runtime-type.lisp -> early-target-type.lisp
4658 ** target-type.lisp -> late-target-type.lisp
4659 ** early-host-format.lisp -> early-format.lisp
4660 ** late-host-format.lisp -> late-format.lisp
4661 ** host-error.lisp -> misc-error.lisp
4662 ** early-error.lisp -> early-target-error.lisp
4663 ** late-error.lisp -> late-target-error.lisp
4664 ** host-defboot.lisp -> early-defboot.lisp
4665 ** code/misc.lisp -> code/target-misc.lisp
4666 ** code/host-misc.lisp -> code/misc.lisp
4667 ** code/numbers.lisp -> code/target-numbers.lisp
4668 ** code/early-numbers.lisp -> numbers.lisp
4669 ** early-host-type.lisp -> early-type.lisp
4670 ** late-host-type.lisp -> late-type.lisp
4671 ** host-typep.lisp -> typep.lisp
4672 ** load.lisp -> target-load.lisp
4673 ** host-load.lisp -> load.lisp
4674 ** host-disassem.lisp -> disassem.lisp
4675 ** host-insts.lisp -> insts.lisp
4676 ** byte-comp.lisp -> target-byte-comp.lisp
4677 ** host-byte-comp.lisp -> byte-comp.lisp
4678 ** host-signal.lisp -> signal.lisp
4679 ** host-defstruct.lisp -> defstruct.lisp
4680 ** late-target-type.lisp -> deftypes-for-target.lisp
4681 Furthermore, several other previously target-only files foo.lisp (e.g.
4682 hash-table.lisp and random.lisp) have been split into a target-and-host
4683 foo.lisp file and a target-only target-foo.lisp file, with their key type
4684 definitions in the target-and-host part, so that the cross-compiler will
4685 know more about target types.
4686 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4687 gone away. In their place are various *BACKEND-FOO* variables
4688 corresponding to the slots of the old structure.
4689 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4690 into the target SBCL has been fixed.
4691 * The chill.lisp system for loading cold code into a running SBCL
4693 * Support for the CMU CL "scavenger hook" extension has been removed.
4694 (It was undocumented and unused in the CMU CL sources that SBCL was
4695 derived from, and stale in sbcl-0.6.1.)
4696 * Various errors in the cross-compiler type system were detected
4697 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4698 (enabling various consistency checks). Many of them were fixed,
4699 but some hard problems remain, so the compiler is back to
4700 running without *TYPE-SYSTEM-INITIALIZED* for now.
4701 * As part of the cross-compiler type system cleanup, I implemented
4702 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4703 * I have started adding UNCROSS calls throughout the type system
4704 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4705 on cross-compiler input files will be able to go away, and various
4707 * CONSTANTP now returns true for quoted forms (as explicitly required
4710 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4712 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4713 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4714 (MAKE-LIST -1). In the longer term, it ought to become true
4715 that declarations are assertions even at SAFETY 1. For now, it's not
4716 quite true even at SAFETY 3, but it's at least more nearly true..
4717 (Note that this change seems to increases the size of the system by
4718 O(5%) and to decrease the speed of the compiler by 20% or more.)
4719 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4720 for the problem of printing dozens of lines of distracting information
4721 about low-level system machinery as part of the top stack frame
4722 on entry to the debugger when an undefined function was called.
4723 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4724 is not reset to COMMON-LISP-USER.
4725 * Compilation of stuff related to dyncount.lisp has been made conditional
4726 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4727 smaller. The various dyncount-related symbols have been moved into
4728 a new "SB-DYNCOUNT" package.
4729 * tty-inspect.lisp has been renamed to inspect.lisp.
4730 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4731 feature has gone away. (When we eventually port to other flavors of
4732 libc and/or Unix, we'll try to make the differences between flavors
4733 invisible at the user level.)
4734 * Various other *FEATURES* tags, and/or their associated conditionals,
4735 have been removed if obsolescent, or given better documentation, or
4736 sometimes given more-mnemonic names.
4738 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4740 * tidied up "make.sh" script
4741 * tidied up system directory structure
4742 * better "clean.sh" behavior
4743 * added doc/FOR-CMUCL-DEVELOPERS
4744 * many many small tweaks to output format, e.g. removing possibly-confusing
4745 trailing #\. character in DESCRIBE-INSTANCE
4746 * (EQUALP #\A 'A) no longer signals an error.
4747 * new hashing code, including EQUALP hashing
4748 * tidied up Lisp initialization and toplevel
4749 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4750 * command line argument processing
4751 * added POSIX-GETENV function to deal with Unix-ish environment variables
4752 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4753 terminating SBCL on EOF
4754 * non-verbose GC by default
4755 * There is no more "sbcl" shell script; the sbcl file is now the C
4756 runtime executable (just like CMU CL).
4757 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4759 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4760 symbol and package information as Lisp native symbol and package objects
4761 instead of strings naming symbols and strings naming packages. This way,
4762 whenever packages are renamed (as in warm init), debug information is
4763 transformed along with everything else.
4764 * tweaked the optimization policy declarations which control the building
4765 of SBCL itself. Now, among other things, the system no longer saves
4766 source location debugging information. (This helps two problems at once
4767 by reducing SBCL size and by keeping SBCL from trying to look for its
4768 sources -- which may not exist -- when reporting errors.)
4769 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4770 debugging and testing purposes
4771 * cleaned up printing, making the printer call PRINT-OBJECT for
4772 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4773 methods, giving nearly-ANSI behavior
4774 * converted almost all special variables to use *FOO* naming convention
4775 * deleted PARSE-TIME functionality, since it can be done portably
4776 * moved some files out of cold init into warm init
4777 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4779 * regularized formatting of source files
4780 * added an install.sh script
4781 * fixed ridiculous memory usage of cross-compiler by making
4782 compiler/alloc.lisp not try to do pooling unless it can hook
4783 itself into the GC of the cross-compilation host. Now the system
4784 builds nicely on my old laptop.
4785 * added :SB-ALLOC in target-features.lisp-expr
4786 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4787 was not implemented)
4788 * re-did condition handling and note reporting in the compiler. Notes
4789 are no longer handled by signalling conditions. Style warnings
4790 and warnings are handled more correctly and reported in such a way
4791 that it's easy to find one or the other in your output (so that you
4792 can e.g. figure out which of many problems caused COMPILE-FILE to
4794 * changed the severity of several compiler warnings from full WARNING
4795 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4796 compiler note reporting so that it doesn't use the condition system
4797 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4798 COMPILE-FILE command)
4799 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4800 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4801 no longer supported, since their implementation was deeply intertwingled
4802 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4803 * removed bogus "support" for compiler macros named (SETF FOO), and
4804 removed the compiler macro for SETF INFO (but only after making a fool
4805 of myself on the cmucl-imp mailing list by posting a bogus patch for
4806 DEFINE-COMPILER-MACRO..)
4807 * Compiled files containing forms which have side effects on the Lisp
4808 reader (such as DEFPACKAGE forms) are now handled more correctly.
4809 (Compiler queuing of top level lambdas has been suppressed by setting
4810 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4811 * deleted various currently-unused source files, e.g. gengc.lisp. They
4812 may be added back at some point e.g. when porting to other architectures,
4813 but until they are it's distracting to distribute them and to try to
4815 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4816 there were so many of them they're just distractions, and UNCROSS is
4817 known to be able to handle the current sources
4818 * moved PROFILE functionality into TRACE, so that it will be clear
4819 how the wrapping and unwrapping of functions when you profile them
4820 interacts with the wrapping and unwrapping of functions when you
4821 trace them. (Actually, the functionality isn't there yet, but at least
4822 the interface specification is there. Hopefully, the functionality will
4823 arrive with some future maintenance release.)
4824 * removed host-oops.lisp
4825 * changed signature of QUIT function to allow UNIX-CODE argument
4826 * fixed READ-SEQUENCE bug
4827 * tweaked verbose GC output so that it looks more like the progress
4828 output that ANSI specifies for functions like LOAD
4829 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4830 * added <http://sbcl.sourceforge.com> to the banner information printed by