1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.20 relative to 1.0.19:
3 * bug fix: fixed #427: unused local aliens no longer cause compiler
4 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
6 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
7 alien-stack leakage. (reported by Andy Hefner)
9 changes in sbcl-1.0.19 relative to 1.0.18:
10 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
11 warnings that go otherwise unhandled will be muffled if they are
12 of the type that's the value of this variable.
13 * optimization: stack allocation is slightly more efficient on x86
15 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
16 where a raw slot always is initialized using the initform whose
17 type is not know sufficiently well a compile-time are now compiled
18 correctly. (reported by John Morrison)
19 * bug fix: compiler no longer makes erronous assumptions in the
20 presense of non-foldable SATISFIES types.
21 * bug fix: stack analysis missed cleanups of dynamic-extent
22 arguments in non-let-converted calls to local functions.
23 * improvements to the Windows port:
24 ** adjusted address spaces for building on both Win32 and
25 Win64. (thanks for John Connors)
26 * fixed some bugs revealed by Paul Dietz' test suite:
27 ** interval arithmetic during type derivation used inexact integer
28 to single-float coercions.
29 ** arithmetic operations involving large integers and single
30 floats give the same results in compiled and interpreted code.
31 ** deriving the result type of COERCE no longer signals an error
32 if the derived type of the second argument is a MEMBER type
33 containing invalid type specifiers.
34 ** ADJOIN with constant NIL as second argument works correctly.
35 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
37 changes in sbcl-1.0.18 relative to 1.0.17:
38 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
39 profiles only the current thread.
40 * minor incompatible change: changes to SYMBOL-VALUE of constants
41 defined with DEFCONSTANT now signal an error.
42 * enhancement: SB-SPROF now has support for wallclock profiling,
43 and is also able to profile specific threads. REPORT output
44 has also additional sorting options.
45 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
47 * optimization: structure allocation has been improved
48 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
49 ** out of line constructors are ~10% faster.
50 ** inline constructors are ~15% faster.
51 ** inline constructors are capable of dynamic extent allocation
52 (generally on x86 and x86-64, in some cases on other platforms
54 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
56 * optimization: file compiler is now able to coalesce non-circular
57 lists, non-base strings, and bit-vectors. Additionally, constants
58 are never referenced through SYMBOL-VALUE at runtime.
59 * optimization: code defining methods on PRINT-OBJECT (and other
60 generic functions in the COMMON-LISP package) now loads faster.
61 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
63 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
64 fasl is now deleted. (reported by Attila Lendvai)
65 * bug fix: READ-LINE always returned NIL for the last line in files.
66 (reported by Yoshinori Tahara)
67 * bug fix: more accurate disassembly annotations of foreign function
68 calls. (thanks to Andy Hefner)
69 * bug fix: trimming non-simple strings and non-string string
70 designators when the there is nothing to trim works properly.
71 (thanks to James Knight)
72 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
73 (thanks to Travis Cross)
74 * fixed some bugs revealed by Paul Dietz' test suite:
75 ** NIL is a valid function name (regression at 1.0.13.38)
76 ** FILL on lists was missing its return value (regression at 1.0.12.27)
77 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
78 fill pointers properly (regression at 1.0.12.23)
79 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
80 displacement indices properly (regression at 1.0.12.23)
82 changes in sbcl-1.0.17 relative to 1.0.16:
83 * temporary regression: user code can no longer allocate closure
84 variable storage on stack, due to bug 419 without explicitly
85 requesting it. Please consult sbcl-devel for advice if you need to
86 use this feature in the meanwhile.
87 * new feature: runtime argument --control-stack-size can be used to
88 adjust thread default control stack size.
89 * enhancement: improved TIME output
90 ** all times are reported using the measured accuracy (milliseconds
91 for real and GC times, microseconds for everything else.)
92 ** processor cycle counts on x86 and x86-64.
93 ** interpreted forms are counted for both evaluator modes.
94 ** number of lambdas converted by the compiler is reported.
95 ** CPU percentage report (computed from real and total run time.)
96 ** more comprehensive run time reporting, using a condenced format
97 ** interperted form, lambda, and page fault counts are omitted
99 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
101 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
102 * optimization: two argument forms of LAST are upto ~10% faster
103 in normal SPEED policies.
104 * optimization: NCONC no longer needs to heap cons its &REST list
105 in normal SPEED policies.
106 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
108 * bug fix: UNION and NUNION work with :TEST-NOT once more,
109 regression since 1.0.9.1. (thanks to Eric Marsden)
110 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
111 since 1.0.15.36. (thanks to Paul Khuong)
112 * bug fix: LAST when always returned the whole list when given a bignum
113 as the second argument.
114 * bug fix: dynamic extent allocation of nested lists and vectors
115 could leak to otherwise accessible parts.
116 * bug fix: invalid optimization of heap-allocated alien variable
118 * bug fix: fasl header checking is less vulnerable to different
119 platform word lengths.
120 * bug fix: more correct assembler syntax for GNU binutils
121 2.18.50.0.4 support. (thanks to Marijn Schouten)
122 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
124 * bug fix: the fopcompiler can handle LOCALLY forms (with no
125 declarations) successfully. (reported by Attila Lendvai)
127 changes in sbcl-1.0.16 relative to 1.0.15:
128 * minor incompatible change: revert the changes to sb-posix's error
129 signaling added in 1.0.14.
130 * minor incompatible change: change PROBE-FILE back to returning
131 NIL whenever we can't get a truename, as was the case before 1.0.14.
132 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
133 inherits from ERROR instead of just CONDITION.
134 * new feature: SB-INTROSPECT can provide source locations for instances
135 as well. (thanks to Tobian Ritterweiler)
136 * optimization: binding special variables now generates smaller code
137 on threaded platforms.
138 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
139 and cases where no :TEST is given but the compiler can infer that
140 the element to search is of type (OR FIXNUM (NOT NUMBER)).
141 * optimization: better LOGNOT on fixnums.
142 * optimization: modular arithmetic for a particular requested width
143 is implemented using a tagged representation unless a better
144 representation is available.
145 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
146 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
147 for wellformedness and returns a specialized vector. (reported by
148 Francois-Rene Rideau)
149 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
150 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
151 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
152 unscheduling timer at the same time as another timer fires.
153 * bug fix: don't reschedule timers for dead threads.
154 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
155 * bug fix: copying output from RUN-PROGRAM to a stream signalled
156 bogus errors if select() was interrupted.
157 * enhancement: add support for fcntl's struct flock to SB-POSIX.
159 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
160 * enhancement: cleaner backtraces for interactive interrupts, as
161 well as other cases where the interesting frames used to be
162 obscured by interrupt handling frames.
163 * enhancement: untracing a whole package using (UNTRACE "FOO") is
164 now supported, and tracing a whole package using (TRACE "FOO") now
165 traces SETF-functions as well.
166 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
167 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
168 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
169 * unreadably printed representation of hash-tables now includes
171 * bug fix: partially fixed #188: type propagation from assignments
172 is now more efficient.
173 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
174 'DOUBLE-FLOAT) are not flushable.
175 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
176 full address of the object, and none of the tag bits.
177 * bug fix: readably printing hash-tables now respects other printer
178 control variables. (reported by Cedric St-Jean)
179 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
180 keyword with MAKE-HASH-TABLE.
181 * bug fix: export SB-POSIX:MKSTEMP.
182 * bug fix: SORT was not interrupt safe.
183 * bug fix: XREF accounts for the last node of each basic-block as
185 * bug fix: MAKE-INSTANCE optimizations interacted badly with
186 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
187 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
188 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
189 create obsolete instances in the case of redefinition or
190 obsoletion of a superclass. (thanks to Andy Hefner)
191 * bug fix: Support for the Alpha architecture has been revived; it had
192 suffered somewhat from lack of maintenance since sbcl-1.0.
193 * improvements to the Windows port:
194 ** The system detects the codepage to use at startup, instead of
195 using the value from the saved core. (thanks to Kei Suzuki)
197 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
198 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
199 (see documentation for details.)
200 * revived support for OpenBSD (contributed by Josh Elsasser)
201 * partially fixed bug #108: ROOM no longer suffers from occasional
202 (AVER (SAP= CURRENT END)) failures.
203 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
204 bodies no longer cause a WARNING to be signalled. (reported by
206 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
207 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
208 the bug in TRUNCATE.) (reported by Michael Weber)
209 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
210 no samples. (reported by Andy Hefner)
211 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
212 no longer appear as (NIL ...) frames in backtraces.
213 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
214 is now actually exported from SB-EXT as documented. (reported by
216 * bug fix: sb-aclrepl now correctly understands how to inspect
217 single-floats on 64-bit platforms where single-floats are not boxed.
218 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
219 yet been finalized. (reported by Levente Meszaros)
220 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
221 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
222 SBCL-specific optimize qualities.
224 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
225 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
226 an executable in the search path, and does so in the child
227 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
228 been removed; it can be found in the CVS history, for somebody who
229 needs that search behavior (see the manual).
230 * minor incompatible change: compiler policy re. weakening type
231 checks has changed: now type checks are weakened only if SAFETY < 2
233 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
234 unparsing of directory pathnames as files. Analogously,
235 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
236 filename to parse into a directory pathname.
237 * enhancement: implicit generic function creation now signals a
238 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
239 users can bind handlers for and muffle around calls to LOAD.
240 * enhancement: RUN-PROGRAM allows unicode arguments and environments
241 to be used (using the default stream external format), and allows
242 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
243 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
244 strings and vectors whose element-type or simplicity is not fully
245 known at compile-time.
246 * optimization: STRING-TRIM and related functions no longer allocate
247 a new string when no trimming needs to be performed. These functions
248 are also faster than before when the input string has been declared
250 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
251 * optimization: READ-LINE is significantly faster for files containing
253 * optimization: non-open coded uses of character comparison operators
254 (e.g. char=) no longer cons when called with more than one parameter
255 on platforms supporting dynamic-extent allocation.
256 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
257 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
258 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
260 * bug fix: some sequence functions elided bounds checking when
262 * bug fix: too liberal weakening of union-type checks when SPEED >
264 * bug fix: more bogus fixnum declarations in ROOM implementation
267 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
268 * new feature: MAKE-HASH-TABLE now experimentally accepts a
269 :SYNCHRONIZED argument, which makes the hash-table safe for
270 concurrent accesses (but not iteration.) See also:
271 SB-EXT:WITH-LOCKED-HASH-TABLE, and
272 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
273 * optimization: CONCATENATE on strings is an order of magnitude faster
274 in code compiled with (> SPEED SPACE).
275 * optimization: SUBSEQ is ~50% faster on lists.
276 * bug fix: bug 417 fixed -- source location reporting is now more robust.
277 * bug fix: SUBSEQ on a list will now correctly signal an error if if
278 END is smaller then START.
279 * bug fix: SB-PROFILE will no longer report extra consing for nested
280 calls to profiled functions.
281 * bug fix: ROOM implementation had bogus fixnum declarations which
282 could cause type-errors when calling ROOM on large images.
283 * bug fix: if file compilation is aborted, the partial fasl is now
284 deleted, and COMPILE-FILE returns NIL as the primary value.
285 * bug fix: number of thread safety issues relating to SBCL's internal
286 hash-table usage have been fixed.
287 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
288 be returned from its body when the values were being returned
289 using unknown-values return convection and the W-P-O was wrapped
290 inside an UNWIND-PROTECT.
291 * bug fix: sb-posix should now compile again under Windows, enabling
294 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
295 * incompatible change: hash-table accessor functions are no longer
296 automatically protected by locks. Concurrent accesses on the same hash-table
297 from multiple threads can give inconsistent results or even corrupt the
298 hash-table completely. Multi-threaded applications should do their own
299 locking at the correct granularity. In the current implementation it is
300 still safe to have multiple readers access the same table, but it's not
301 guaranteed that this property will be maintained in future releases.
302 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
303 and will signal an error at runtime.
304 * enhancement: SB-THREAD package now exports a semaphore interface.
305 * enhancement: CONS can now stack-allocate on x86 and
306 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
308 * enhancement: nested lists can now be stack allocated on
309 platforms providing stack allocation support.
310 * enhancement: dynamic-extent support has been extended to support
311 cases where there are multiple possible sources for the stack
313 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
314 if the mutex is uncontested on Linux.
315 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
316 as specified by the CLHS. (thanks to Tobias Rittweiler)
317 * bug fix: NaN comparison now works on x86-64.
318 * bug fix: CLOSE :ABORT T on a stream with pending output now
320 * bug fix: instances of non-standard metaclasses using standard
321 instance structure protocol sometimes missed the slot type checks
323 * bug fix: known functions can be inlined in high-debug code.
325 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
326 * minor incompatible change: the MSI installer on Windows no longer
327 associates .lisp and .fasl files with the installed SBCL.
328 * minor incompatible change: :UNIX is no longer present in *FEATURES*
329 on Windows. (thanks to Luis Oliviera)
330 * new feature: SB-CLTL2 contrib module now implements
331 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
332 * optimization: scavenging weak pointers is now more efficient,
333 requiring O(1) instead of O(N) per weak pointer to identify
334 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
335 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
336 method bodies using constant slot-names when the first argument is
337 a specializer parameter for the method.
338 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
339 names, when the class of the instance is a direct instance
340 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
341 as slow as the constant slot-name case.)
342 * optimization: member type construction is now O(N) instead
344 * optimization: UNION and NUNION are now O(N+M) for large
345 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
347 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
348 now more readable in environments like Slime which display it.
349 (thanks to Tobias C. Rittweiler)
350 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
351 was able to infer the correct argument type for the object on which
352 the CAS operation was being performed.
353 * bug fix: copy propagation interfered with parallel assignment
354 semantics in local calls. (reported by Paul Khuong)
355 * bug fix: the signed modular fixnum shift compiled to wrong code on
356 x86 and x86-64. (spotted by a slight modification to some of
359 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
360 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
361 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
362 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
364 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
365 and generic function now print the object identity for anonymous
366 instances. (thanks to Attila Lendvai)
367 * enhancement: as an extension to MOP, SBCL now supports SETF of
368 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
369 (thanks to Attila Lendvai)
370 * enhancement: sb-cover has an alternate annotation mode which puts
371 the form annotations at the car of the form, instead of annotating
372 it completely. The benefit of this mode is that it shows better
373 which forms were instrumented by the compiler.
374 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
375 by printer control variables. (reported by Dan Corkill)
376 * bug fix: system leaked memory when delayed output was performed by
377 the OS in smaller chunks then expected. (thanks to David Smith)
378 * bug fix: system leaked memory when file streams were not closed
380 * bug fix: large objects written to slow streams that were modified
381 after the write could end up with the modified state written to
382 the underlying file descriptor.
383 * bug fix: multiple threads operating in parallel on the same stream
384 could cause buffer-overflows.
385 * bug fix: source location information is stored correctly
386 (broken since 1.0.6). This bug would generally show up as the
387 Slime debugger highlighting the wrong form when the sldb-show-source
389 * bug fix: Branch forms are again annotated as branches in the sb-cover
391 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
392 on x86-64. (reported by Gregory Vanuxem)
393 * bug fix: EQUALP could return wrong results for structures with raw
394 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
395 word). (reported by Vjacheslav Fyodorov)
396 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
399 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
400 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
401 atomic compare-and-swap operations on threaded platforms.
402 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
403 allows assigning a global minimum value to optimization qualities
404 (overriding proclamations and declarations).
405 * enhancement: closed over variables can be stack-allocated on x86
407 * performance bug fix: GETHASH and (SETF GETHASH) are once again
409 * optimization: slot definition lookup is now O(1). This speeds up
410 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
411 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
412 * optimization: ASSOC and MEMBER can now be open-coded for all
413 combinations of keyword arguments when second argument is constant
414 and SPEED >= SPACE. In other cases a specialized version is
416 * bug fix: using obsoleted structure instances with TYPEP and
417 generic functions now signals a sensible error.
418 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
419 (reported by Kristoffer Kvello)
420 * bug fix: backtrace construction is now more careful when making
421 lisp-objects from pointers on the stack, to avoid creating bogus
422 objects that can be seen by the GC.
423 * bug fix: defaulting of values in contexts expecting more than 7
424 variables now works on x86-64. (reported by Christopher Laux)
425 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
427 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
428 as the property-list of a symbol.
429 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
430 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
431 situations requested, are once again file-compileable. (reported
434 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
435 * MOP improvement: support for user-defined subclasses of
436 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
437 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
438 the expansion of DEFMETHOD, is responsible for generating a form
439 which creates a list of specializers when evaluated. Additional
440 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
441 debugging and introspective support.
442 * minor incompatible change: the (unsupported) spinlock interface
443 has changed: free spinlock now has the value NIL, and a held spinlock
444 has the owning thread as its value.
445 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
446 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
448 * enhancement: name of a socket-stream is now "a socket" instead of
450 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
451 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
452 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
453 for generic functions. (Thanks to Tobias C. Rittweiler)
454 * optimization: bignum printing speed has been improved by 20-40%
455 (depending on the bignum size.)
456 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
458 * bug fix: the cache used by the CLOS to store precomputed effective
459 methods, slot offsets, and constant return values is now thread and
461 * bug fix: generic function dispatch function updating is now thread
462 and interrupt safe (in the sense that the known issues have been
464 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
465 * bug fix: interning EQL-specializers is now thread and interrupt safe.
466 * bug fix: asdf systems with dependencies to the SB-POSIX or
467 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
468 * bug fix: interrupt safety of applicable method computation has been
471 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
472 * new contrib: sb-cover, an experimental code coverage tool, is included
474 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
475 significantly faster.
476 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
477 produce more efficient code on x86-64 if the compiler can determine
478 that (+ INDEX <constant>) does not require a bounds check and FOO
479 has an element type at least 8 bits wide.
480 * enhancement: a new, experimental synchronous timeout facility is
481 provided. Refer to SB-SYS:WITH-DEADLINE for details.
482 * enhancement: when a symbol name conflict error arises, the
483 conflicting symbols are always printed with a package prefix.
484 (thanks to Kevin Reid)
485 * enhancement: stepping is now once again supported on the SPARC and
486 MIPS platforms. (It is also now more likely to work on CheneyGC
488 * enhancement: sb-sprof can now also track and report accurate call
490 * bug fixes: the treatment of non-standard subclasses of
491 SB-MOP:SPECIALIZER is more correct.
492 * incompatible change: PURIFY no longer copies the data from the
493 dynamic space into the static and read-only spaces on platforms
494 that use the generational garbage collector
495 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
497 * bug fix: GC race condition occasionally resulting in crashes with
498 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
500 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
502 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
503 a STYLE-WARNING to be signalled (regression from 1.0.4.)
504 * bug fix: an asynchronous interrupt could previously leave the
505 system running with GC inhibited.
506 * bug fix: a DECLARE form evaluated at top-level now causes an error
507 rather than silently (or verbosely) returning NIL.
508 * bug fix: trying to dissassemble functions compiled at high DEBUG could
509 result in a error being signalled due to source form lookup errors.
510 (reported by Peter Graves)
512 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
513 * incompatible change: removed writer methods for host-ent-name,
514 host-ent-addresses -- changing the values did not update the DNS
516 * minor incompatible change: changed experimental JOIN-THREAD interface
517 * documentation: the manual now lists reader and writer methods
518 in class slot documentation sections. (thanks to Richard M Kreuter)
519 * documentation: unwinding from asyncronous events has been
520 documented as unsafe.
521 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
522 in multithreaded application code.
523 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
524 platforms. (thanks to James Anderson for the optimization hint)
525 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
527 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
528 variants no longer cons.
529 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
530 their NOT- variants no longer cons.
531 * optimization: EQUAL hash tables no longer use SXHASH for objects
532 of all data types, but instead use an EQL hash for types for which
533 EQUAL is the same as EQL.
534 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
535 are significantly faster.
536 * optimization: new STRING-OUTPUT-STREAM implementation is much
537 faster for large outputs and conses 30% less on average.
538 * enhancement: XREF information is now collected for references made
539 to global variables using SYMBOL-VALUE and a constant argument.
540 * enhancement: SIGINT now causes a specific condition
541 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
542 * bug fix: FILE-POSITION used to signal an error in some cases where
543 ANSI requires it to return NIL.
544 * bug fix: ADJUST-ARRAY is now interrupt-safe.
545 * bug fix: adding and removing fd-handlers is now interrupt-safe.
546 * bug fix: inlined calls to C now ensure 16byte stack alignment on
548 * bug fix: bad type declaration in the CLOS implementation has
549 been fixed. (reported by James Anderson)
550 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
551 (thanks to Lutz Euler)
552 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
553 required by the CLHS. (reported by Samium Gromoff)
554 * bug fix: dead unbound variable references now signal an error.
555 (reported by Marco Monteiro)
556 * bug fix: / with an unused value was being deleted in safe code.
557 (thanks to Marco Monteiro and Kevin Reid)
558 * bug fix: number of characters that can be written onto a single
559 line in a file is unlimited.
560 * bug fix: some GC deadlocks caused by asynchronous interrupts have
561 been fixed by inhibiting interrupts for when GC is disabled.
562 * bug fix: some interrupt safety issues with GETHASH, (SETF
563 GETHASH), CLRHASH and REMHASH have been fixed.
564 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
565 specifier no longer causes infinite recursion.
566 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
567 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
568 * bug fix: an &environment argument with the correct variable information
569 is passed to macros that are expanded during byte compilation.
570 (reported by Samium Gromoff)
571 * bug fix: a logic error was causing the hash function for bignums to
572 have excessive amounts of collisions. (reported by Faré Rideau)
573 * bug fix: modifying the contents of an array could change the return
574 value of SXHASH on that array, which is only allowed for strings
575 and bit vectors. (bug introduced in 0.9.16)
576 * improvement: the x86-64/darwin port now passes all tests (except
577 for the debugger tests) but should still be considered
578 experimental until this is fixed.
579 * improvement: a style-warning is signaled for CASE (etc) clauses with
580 duplicate keys. (thanks to Kevin Reid)
581 * improvement: macos/x86 and macos/x86-64 now use mach exception
582 handlers for dealing with illegal instructions (for trapping and
583 error handling) and memory protection violations (for GC).
585 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
586 * new platform: experimental support for x86-64/darwin (MacOS).
587 * incompatible change: the thread-safe (on most platforms) getaddrinfo
588 and getnameinfo sockets functions are used instead of gethostbyaddr
589 and gethostbyname, on platforms where the newer functions are available.
590 As a result, the ALIASES field of HOST-ENT will always be NIL on these
592 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
593 don't print the startup banner, but behave as if --noinform was passed
594 as a command line argument. (thanks to Kevin Reid)
595 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
596 * optimization: code using alien values with undeclared types is much faster.
597 * optimization: the compiler is now able to open code SEARCH in more cases.
598 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
599 * bug fix: using standardized COMMON-LISP special variables as loop
600 variables no longer signals bogus package lock violations. (reported
602 * bug fix: declaring local loop variables to be of a range-limited type
603 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
604 (reported by Andras Simon)
605 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
606 bugs remain on x86-64.)
607 * bug fix: the #= and ## reader macros now interact reasonably with
608 funcallable instances.
609 * bug fix: type-checks for function arguments were compiled using the
610 compiler policy settings of the wrong lexical environment (in 1.0.2
612 * bug fix: SHADOW accepts characters as string designators, as required
613 by the spec (thanks to Eric Marsden)
614 * bug fix: fixed GC safety issues when foreign functions are called with
615 non-base strings as arguments
616 * bug fix: more consistent error output for fatal-compiler-warnings, like
618 * bug fix: functions with proper names were showing up as NIL in
619 backtraces (reported by Edi Weitz, regression in 1.0.2)
621 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
622 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
623 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
624 produce more efficient code on the x86 if the compiler can determine
625 that (+ INDEX <constant>) does not require a bounds check and FOO
626 has an element type at least 8 bits wide.
627 * bug fix: references to undefined variables are handled the same way
628 in toplevel forms as in the normal compiler
629 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
631 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
632 (thanks to Jon Buller)
633 * improvement: faster compilation times for complex functions
634 * improvement: added readlink support to SB-POSIX (thanks to Richard
637 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
638 * improvement: experimental support for mach exception handling on
639 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
641 * improvement: support for GBK external format.
642 (thanks to Chun Tian (binghe))
643 * improvement: the debugger now displays variables that have been closed
644 over, in code compiled with (DEBUG 2) or higher
645 * improvement: support for executable cores on NetBSD (thanks to
647 * new feature: added a RESTART-FRAME debugger command
648 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
649 be used to provide an implementation for FILE-POSITION on Gray streams
650 (thanks to Eric Marsden)
651 * new feature: add syslog, openlog and closelog support to SB-POSIX
652 (thanks to Richard Kreuter)
653 * optimization: the function call overhead in code compiled with
654 a high DEBUG optimization setting is significantly
655 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
656 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
657 (thanks to Tony Martinez)
658 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
659 evaluated once (reported by Kevin Reid)
660 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
661 works again (thanks to Kilian Sprotte)
662 * bug fix: an error is signaled for tagbodies with duplicate tags
663 (thanks to Stephen Wilson)
664 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
665 * bug fix: Win32 port can now handle foreign code unwinding Lisp
666 stack frames from alien callbacks.
667 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
668 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
669 65k pages (thanks to David Woodhouse)
670 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
672 changes in sbcl-1.0.1 relative to sbcl-1.0:
673 * new platform: FreeBSD/x86-64, including support for threading.
674 * new feature: the compiler stores cross-referencing information
675 about function calls (who-calls), macroexpansion (who-macroexpands)
676 and special variables (who-binds, who-sets, who-references) for code
677 compiled with (< SPACE 3). This information is available through the
678 sb-introspect contrib.
679 * new feature: users may subclass SEQUENCE, and have instances of
680 these classes interoperate with standard Common Lisp functions if
681 a number of methods are defined. (This feature is experimental
682 and the interface subject to change based on feedback from SBCL
683 users and the general community)
684 * improvement: sb-sprof traces call stacks to an arbitrary depth on
685 x86/x86-64, rather than the previous fixed depth of 8
686 * improvement: another pthread back-end of mutex "pthread-futex".
687 * bug fix: non-ascii command-line arguments are processed correctly
688 (thanks to Yaroslav Kavenchuk)
689 * bug fix: non-required arguments were not passed correctly when a method
690 defined using DEFMETHOD was called from a mop-generated method using
691 CALL-NEXT-METHOD (reported by Pascal Costanza)
692 * bug fix: recursion is now permitted in accessors through
693 SLOT-UNBOUND. (reported by Pascal Costanza)
694 * bug fix: an error was signaled at startup if the HOME environment
695 variable was defined, but had an empty value (reported by Peter Van Eynde)
696 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
697 signal a PROGRAM-ERROR, not a BUG.
698 * bug fix: SB-POSIX:READDIR works when built with large file support.
699 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
701 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
702 for better automatic indentation support. (thanks to Matt Pillsbury)
703 * optimization: loading generic functions no longer takes O(n^2) time,
704 proportional to the amount of methods in the generic function
705 (reported by Todd Sabin and Jeremy Brown)
706 * optimization: the FIND and POSITION family of sequence functions
707 are significantly faster on arrays whose element types have been
709 * improvements to the Windows port:
710 ** Intermittent heap corruption problems have been fixed. (thanks
711 to Alastair Bridgewater)
712 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
714 ** Lisp is able to unwind foreign exception frames from alien
715 callbacks. (thanks to Alastair Bridgewater)
717 changes in sbcl-1.0 relative to sbcl-0.9.18:
718 * improvement: experimental support for threading on FreeBSD/x86.
719 (thanks to NIIMI Satoshi)
720 * improvement: runtime option --dynamic-space-size can be used
721 to set the size of the dynamic space reserved on startup.
722 * improvement: floating point modes in effect are now saved in
723 core, and restored on startup.
724 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
725 startup, not time since first call to GET-INTERNAL-REAL-TIME.
726 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
727 threads are not running after *SAVE-HOOKS* have run.
728 * improvement: writes to CLOS instance slots are type-checked in code
729 compiled with (SAFETY 3)
730 * improvement: floating-point exception handling on FreeBSD (thanks to
732 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
733 (thanks to Zach Beane)
734 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
736 * improvement: added support for the Shift-JIS external format.
737 (contributed by NIIMI Satoshi)
738 * improvement: callbacks are supported on Linux/PPC. (thanks to
740 * bug fix: compiler bug triggered by a (non-standard) VALUES
741 declaration in a LET* was fixed. (reported by Kaersten Poeck)
742 * bug fix: file compiler no longer confuses validated and already
743 dumped structurres. (reported by Kaersten Poeck)
744 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
745 fill-pointer signals a type-error as required. (thanks to
747 * bug fix: disassemly of funcallable instances works.
748 * bug fix: single stepping on PPC.
749 * bug fix: fix thread-safety problems in the type system (generally
750 manifesting as nonsensical errors like "STRING is a bad type specifier
751 for sequences" or "The value 1 is not of type FIXNUM")
752 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
753 (reported by Josip Gracin)
754 * bug fix: an error is signaled for attempts to displace arrays with
755 incompatible element types (thanks to Mario Mommer)
756 * bug fix: more correct handling of wide characters in debug info
757 (bug reported by Attila Lendvai and fixed by Juho Snellman)
758 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
759 and don't cause extra consing
760 * optimization: MAP and MAP-INTO are significantly faster on vectors
761 whose elements types have been declared.
762 * Improvements to SB-SPROF:
763 ** Support for allocation profiling
764 ** Reduced profiling overhead, especially for long profiling runs
765 * Improvements to the Windows port:
766 ** floating point exceptions are now reported correctly.
767 ** stack exhaustion detection works partially.
768 ** more accurate GET-INTERNAL-REAL-TIME.
769 ** better RUN-PROGRAM behaviour in case of errors in the child
771 ** PROBE-FILE now simplifies pathnames correctly.
772 ** DIRECTORY now works correctly with :WILD-INFERIORS.
773 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
774 1st 1970 (although time timezone data will be unreliable).
775 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
777 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
778 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
779 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
781 * bug fix: two potential GC deadlocks affecting threaded builds.
782 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
783 returns T (reported by Anton Kazennikov)
784 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
785 with non-variable places
786 * bug fix: remove a race condition in the setting of
787 funcallable-instance functions, this should make threaded CLOS
788 code more stable against memory faults.
789 * bug fix: corruption of specials when unbinding is interrupted by an
790 asynchronous unwind (reported by Hannu Koivisto)
791 * improvement: the debugger will now also display local variables that
792 are only used once, for code compiled with a DEBUG optimization quality
795 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
796 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
797 * incompatible change: External-format support for FFI calls. The
798 SB-ALIEN:C-STRING no longer implies an ASCII
799 external-format. Instead the string is subject to external-format
800 conversion. Additionally return values of type SB-ALIEN:C-STRING
801 are by default of type (SIMPLE-ARRAY CHARACTER), not
802 SIMPLE-BASE-STRING. For an alien type that behaves like the old
803 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
804 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
805 * incompatible change: SB-EXT package no longer contains the
806 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
807 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
809 * incompatible change: the single-stepper is no longer available
810 on Alpha, Mips and Sparc platforms.
811 * minor incompatible change: the direct superclasses of
812 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
813 not (STANDARD-OBJECT FUNCTION). This makes the
814 class-precedence-lists of GENERIC-FUNCTION and
815 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
817 * minor incompatible change: the default stream external format on
818 non-unicode SBCL is no longer detected from the locale, but is always
820 * new feature: Add a version of evaluator that uses an interpreter instead
821 of the compiler. EVAL still uses the compiler by default, to switch it
822 to use the interpreter, set the value of the variable
823 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
824 * minor incompatible change: the single-stepper REPL has been merged
825 with the normal debugger (see the "Stepping" heading of the debugger help
826 for more details). The debugger command STEP will no longer switch
827 to the single-stepper REPL.
828 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
829 for a type now works.
830 * bug fix: loading of default sysinit file works. (thanks to Leonid
832 * bug fix: better detection of circularities in the file-compiler.
833 (reported by Marco Monteiro)
834 * bug fix: the CL pathname functions now work with files that have
835 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
836 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
837 systems with Unix98 pty semantics.
838 * bug fix: ASDF-INSTALL will now work with bsd tar.
839 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
841 * bug fix: timers expiring in dead threads no longer cause a
842 type-error (reported by Paul "Nonny Mouse").
843 * bug fix: thanks to more lightweight single-stepper instrumentation,
844 code compiled with (DEBUG 3) will compile and execute significantly faster,
845 and will have more accurate type-inferencing than before
846 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
847 whose bindings are modified
848 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
849 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
850 ** replace dummy implementations of CL:MACHINE-INSTANCE and
851 CL:SOFTWARE-VERSION with proper version
853 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
854 * feature: implemented the READER-METHOD-CLASS and
855 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
856 as specified by AMOP.
857 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
859 * optimization: faster LOGCOUNT implementation on x86 and x86-64
860 (thanks to Lutz Euler)
861 * optimization: hashing of general arrays and vectors has been
862 improved. (reported by Any Fingerhut)
863 * enhancement: SB-INTROSPECT is now able to find definitions of
864 profiled functions. (thanks to Troels Henriksen)
865 * enhancement: compiler-macro expansion applies now to FUNCALL forms
866 as well, allowing compiler-macros for SETF-functions to expand.
867 * enhancement: step-instrumentation no longer wraps known
868 single-value functions with multiple-value context, allowing
869 better type inference.
870 * fixed bug #337: use of MAKE-METHOD in method combination now works
871 even in the presence of user-defined method classes. (reported by
872 Bruno Haible and Pascal Costanza)
873 * fixed bug #339(c): if there are applicable methods not part of any
874 long-form method-combination group, call INVALID-METHOD-ERROR.
875 (reported by Bruno Haible)
876 * fixed bug #361: the :FUNCTION initarg in the protocol for
877 initialization of methods can now be used to override
878 internally-produced optimized functions. (reported by Bruno
880 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
881 system-provided lambda expression no longer cause warnings about
882 unbound #:|pv-table| symbols.
883 * bug fix: improved the handling of type declarations and the
884 detection of violations for keyword arguments with non-constant
886 * bug fix: potentially erronous calls to PATHNAME and
887 MERGE-PATHNAMES were being flushed in some cases.
888 (reported by Richard Kreuter)
889 * bug fix: compiled calls to TYPEP were mishandling obsolete
890 instances. (reported by James Bielman and Attila Lendvai)
891 * bug fix: format strings with ~> without matching ~< no longer
892 trigger an AVER, but signal an understandable error instead.
893 (reported by Antonio Martinez)
894 * bug fix: specifying an output-file without a pathname-type for
895 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
896 of input-file instead of "fasl". (reported by Robert Dodier)
897 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
898 (reported by James Y Knight).
899 * bug fix: compiler-macros-function did not consider the environment
900 argument for shadowing by local functions.
901 * bug fix: compiler-macros expansion was inhibited by local INLINE
903 * bug fix: inline expansions of known functions were subject to
904 step-instrumentation in high debug policies, leading to problems
906 * bug fix: compiler failed to differentiate between different CONS
908 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
909 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
910 * bug fix: #368: incorrect use of expressed vs. upgraded array
912 * bug fix: #306a: more precise unions of array types.
913 * thread-safety improvements:
914 ** CONDITION-WAIT could return early on Linux, if the thread was
915 interrupted and subsequently continued with SIGCONT.
916 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
918 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
919 * added support for the ucs-2 external format. (contributed by Ivan
921 * minor incompatible change: pretty printing of objects of type
922 (cons symbol) is, in the default pprint-dispatch-table, now
923 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
925 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
926 called later in a class's lifetime, possibly as late as when the
927 first instance of the class is created. Previously,
928 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
929 class became finalizeable.
930 * fixed bug: FILE-POSITION sometimes returned inconsistent results
931 for multibyte external-format streams. (thanks to "vbzoli")
932 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
933 with :ALLOCATION :CLASS inherited from superclasses of the
935 * fixed bug: anonymous classes can now be created using the :NAME
936 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
937 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
938 * fixed bug: core-files saved with :EXECUTABLE T can again be
939 executed when SBCL_HOME isn't set. (reported by James Knight)
940 * fixed bug: toplevel LOCALLY forms with declarations could
941 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
942 * fixed bug: printing from several different threads using different
943 values of *print-case* could cause invalid output, due to
944 some internal special variables of the printer not being bound
945 thread-locally (reported by Max Mikhanosha)
946 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
947 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
948 (reported by Pascal Costanza)
949 * fixed bug: FINALIZE-INHERITANCE is called from
950 REINITIALIZE-INSTANCE on classes when the class has previously
951 been finalized, as required by AMOP.
952 * minor code generation optimizations:
953 ** better register allocation in CLOS dispatching functions
954 ** overflow detection when coercing signed bytes to fixnums on x86-64
955 ** is now implemented with one IMUL instruction instead of three shifts
956 ** more efficient bit-vector access on x86 and x86-64
957 ** more efficient access to raw structure slots on x86 and x86-64
958 * fixed some bugs revealed by Paul Dietz' test suite:
959 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
962 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
963 * feature: thread support on Solaris/x86, and experimental thread support
965 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
967 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
968 default method for SLOT-UNBOUND.
969 * minor incompatible change: prevent the user from specializing the
970 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
971 somewhat counter to the intent of the protocol, I (CSR) think, and
972 additionally it just doesn't work in SBCL as currently
973 implemented, thanks to optimizations (that are always valid for
974 the other three SLOT-VALUEish functions, but not for the setter).
975 * minor incompatible change: the :SB-LDB feature is now enabled by
976 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
977 the low-level debugger.
978 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
979 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
980 down to an SB-SYS:FD-STREAM, allowing direct communication in
981 more cases. Temporary files and pipes are still used as a fallback
983 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
984 on the non-reentrant C functions localtime(3) and gmtime(3).
985 * bug fix: global optimization policy was not visible in LOCALLY and
987 * bug fix: class objects can be used as specializers in methods.
988 (reported by Pascal Costanza)
989 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
990 with a type error. (reported by blitz_ on #lisp)
991 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
992 failed with a type error. (reported by Pascal Bourguignon)
993 * bug fix: merging pathnames against defaults with :DIRECTORY
994 starting with '(:RELATIVE :BACK) should preserve the :BACK.
995 (reported by James Y Knight)
996 * bug fix: saving large (>2GB) cores on x86-64 now works
997 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
998 constant index and a (simple-array (signed-byte 32)) array
999 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1000 error (patch by Robert J. Macomber)
1001 * feature: TIME now displays the amount of run-time spent in GC
1002 * bug fix: The debugger now does a better job of respecting
1003 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1004 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1005 workaround for bug 403.)
1006 * bug fix: floating point exception handling now works on FreeBSD
1007 (thanks to NIIMI Satoshi)
1008 * fixed some bugs revealed by Paul Dietz' test suite:
1009 ** MISC.641: LET-conversion were not supposed to work in late
1011 * improvements to the Win32/x86 port:
1012 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1013 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1015 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1016 * new feature: source path information is generated for macro-expansion
1017 errors for use in IDE's like Slime (thanks to Helmut Eller)
1018 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1019 * bug fix: compiler does not loop forever on an invalid type in
1021 * improvement: compilation of most CLOS applications is significantly
1023 * optimization: added a limited bytecode compiler for simple toplevel
1024 forms, speeding up compilation and FASL loading
1025 * bug fix: the statistical profiler now properly distinguishes anonymous
1028 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1029 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1030 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1031 into subclasses of the finalized class. Now user calls to
1032 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1033 system return before any subclasses are finalized.
1034 * minor incompatible change: The reader no longer ignores errors
1035 regarding non-existent packages in #+ and #- feature tests.
1036 * new feature: command line options --no-sysinit, --no-userinit to
1037 inhibit loading the corresponding init files
1038 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1039 for sending data through UDP sockets (thanks to François-René Rideau)
1040 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1041 error is signalled instead (thanks to François-René Rideau)
1042 * minor incompatible change: Error signalling behaviour of lexical
1043 operations violating package locks has changed slightly. Refer to
1044 documentation on package locks for details.
1045 * enhancement: EVAL can process IF-expressions without resorting to the
1047 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1048 constant-folded properly due to missing out-of-line functions.
1049 (reported by Mika Pihlajamäki)
1050 * bug fix: LISTEN sometimes returned T even in cases where no data was
1051 immediately available from the stream
1052 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1053 were reversed. (reported by Levente Mészáros)
1054 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1055 when given a vector displaced to an adjustable array. (reported
1057 * bug fix: derivation of float boundaries from numbers outside the
1058 appropriate float range (reported by John Wiseman)
1059 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1061 * bug fix: precomputing cache entries for generic functions with
1062 some subclasses of specializers as yet invalid does not attempt to
1063 fill a cache line with a negative offset. (reported by Levente
1065 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1066 allow condition class objects as arguments to DOCUMENTATION and
1067 (SETF DOCUMENTATION); only find and set documentation for
1068 structure names for the STRUCTURE doc-type. (suggested by Gary
1070 * improvements to the Win32/x86 port:
1071 ** (user-homedir-pathname) and default initialization file
1072 locations now know about the user's "Documents and Settings"
1073 directory (thanks to Yaroslav Kavenchuk)
1074 ** run-program is implemented (thanks to Mike Thomas)
1075 ** sockets support (thanks to Timothy Ritchey)
1076 ** better backtrace support (thanks to Alastair Bridgewater)
1077 ** sb-grovel supported
1078 ** asdf-install and sb-posix work somewhat
1079 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1080 * improvements to the Solaris/x86 port:
1081 ** works on Solaris 11/Solaris Express
1082 ** floating-point exception handling support
1083 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1084 * fixed some bugs revealed by Paul Dietz' test suite:
1085 ** REMOVE-METHOD returns its generic function argument even when
1086 the method is not one of the generic functions' methods.
1087 ** objects declared as MEMBER types can be admissible arguments to
1088 structure accessors.
1089 ** printing characters should simply be printed by the FORMAT ~:C
1091 ** compiler failure when compiling functions with hairy constant
1092 defaults for optional parameters.
1093 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1094 function, which is already optimized.
1096 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1097 * new platform: experimental support for SBCL x86/Darwin, including
1098 MacOS X 10.4.5 on Intel.
1099 * new feature: Unicode character names are now known to the system
1100 (through CHAR-NAME and NAME-CHAR).
1101 * new feature: the filesystem location of SBCL's core file is
1102 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1103 * minor incompatible change: the contrib modules SB-POSIX and
1104 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1105 this change is to make it easier to distribute
1106 location-independent binaries.
1107 * bug fix: as implied by AMOP, standardized classes no longer have
1108 slots named by external symbols of public packages. (reported by
1110 * optimization: calling functions via constant symbols -- as in
1111 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1112 via the function object as in (FUNCALL #'FOO).
1113 * optimization: on x86 and x86-64, the calling convention for the
1114 case of dealing with an unknown number of values has been altered
1115 to be friendlier to the prediction heuristics implemented,
1116 particularly with reference to CALL and RET pairing. (thanks to
1117 Alastair Bridgewater)
1118 * optimization: on x86, the code for access to thread-local symbol
1119 values and binding/unbinding of thread-local symbols is smaller.
1120 (thanks to Alastair Bridgewater)
1121 * enhancement: CONSTANTP is now able to determine constantness of
1122 more complex forms, including calls to constant-foldable standardized
1123 functions and some special forms beyond QUOTE.
1124 * fixed bug: occasional GC crashes on Solaris/x86
1125 * optimization: x86-64 supports stack allocation of results of simple
1126 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1127 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1128 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1129 (thanks to James Knight)
1130 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1131 by the standard (thanks to Stephen Compall)
1133 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1134 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1135 be used for bundling the runtime and the core file into one
1136 executable binary. This feature is not currently supported on all SBCL
1137 platforms. (thanks to James Bielman and NIIMI Satoshi)
1138 * new feature: a generational or ephemeral garbage collector is now
1139 the default on the PowerPC platform (both Linux and Darwin). The
1140 old Cheney (stop and copy) collector is a build-time option.
1141 (thanks to Cyrus Harmon, after Raymond Toy)
1142 * minor incompatible change: the method by which SBCL finds its
1143 contributed modules has changed; it no longer relies on symbolic
1144 links from an $SBCL_HOME/systems directory, but searches directly
1145 in the subdirectories of $SBCL_HOME.
1146 * enhancement: the dynamic heap size on the Linux/PPC platform is
1147 markedly larger, even using the older Cheney garbage collector.
1148 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1149 certain complicated string types. (reported by Gary King)
1150 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1151 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1152 * fixed bug: DOCUMENTATION on structures no longer signals an
1153 error if no structure type of the right name exists. (reported by
1155 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1156 applicable non-standard primary or :AROUND method on
1157 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1158 no longer cause unbound variable errors. (reported by Kevin Reid)
1159 * fixed bug: metacircle resolution in cases where methods have slots
1160 added before the slots from STANDARD-METHOD. (reported by Jean
1162 * fixed bug: the Power PC assembly code for calling into lisp
1163 sometimes computed its return address wrongly (depending on the
1164 15th bit of the address, fixed at link time). This used to
1165 manifest itself in a segmentation violation while building PCL.
1166 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1167 many others over the years)
1168 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1169 the stack pointer (treated as a signed integer) is negative.
1170 (thanks to Peter van Eynde)
1172 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1173 * new platform: experimental support for the Windows operating
1174 system has been added. (thanks to Alastair Bridgewater)
1175 * fixed several bugs in and robustified the PPC FFI (including
1176 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1177 * bug fix: allow non-simple string symbol names (reported by Paul
1179 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1181 * bug fix: saving a core corrupted callbacks on x86/x86-64
1182 * bug fix: closed a loophole in metacircularity detection and
1183 grounding in the PCL implementation of CLOS.
1184 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1185 (reported by tomppa on #lisp)
1186 * bug fix: clear the direction flag on Lisp -> C transitions, as
1187 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1188 (reported by Andrej Grozin and Hendrik Maryns)
1189 * optimization: major improvements to GC efficiency on GENCGC platforms
1190 * optimization: faster implementation of EQUAL
1191 * optimization: emit more efficient opcodes for some common
1192 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1193 * optimization: several other minor code-generation improvements on x86-64
1194 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1196 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1197 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1198 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1199 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1200 by ANSI as a generic function, and for consistency (SETF
1201 GENERIC-FUNCTION-NAME) is treated likewise.
1202 * fixed bug #233.b: make constraint propagation notice when a variable
1203 value is changed after it is referenced but before it is used
1204 * fixed bug #296: no more arbitrary behaviour from filenames with
1205 odd characters as --load arguments. (reported by Adam Warner)
1206 * fixed bug #390: :CHARACTER-SET pathname components now work as
1207 expected. (reported by Tim Daly Jr)
1208 * fixed bug #391: complicated :TYPE intersections in slot
1209 definitions no longer cause an error in PCL internals.
1210 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1211 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1212 returning the number of octets which would be written to the
1213 file-stream. (thanks to Robert J. Macomber)
1214 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1215 arguments to the internal stream functions. (thanks to David
1217 * bug fix: stack exhaustion is now handled on the x86/SunOS
1218 platform. (thanks to Daisuke Homma)
1219 * bug fix: more accurate ROOM results on GENCGC platforms
1220 * optimization: improved type inference for arithmetic-for
1221 index variables in LOOP
1222 * optimization: faster floating-point SQRT on x86-64
1223 * fixed some bugs revealed by Paul Dietz' test suite:
1224 ** DOCUMENTATION returns NIL instead of "" for method combinations
1225 that don't have a docstring
1227 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1228 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1229 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1230 therefore are not customizeable by user code (as seems to be at
1231 least permitted and maybe required by AMOP). As a consolation,
1232 however, the SBCL implementation of these functions now calls
1233 REINITIALIZE-INSTANCE as specified by AMOP.
1234 * bug fix: slot-definition documentation is propagated as per ANSI
1235 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1236 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1237 argument, as do eslotd initialization methods. (from Pascal
1238 Costanza's "Closer" project)
1239 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1240 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1242 * bug fix: it is now possible to have more than one subclass of
1243 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1244 (reported by Bruno Haible, Pascal Costanza and others)
1245 * bug fix: the dependent update protocol now works for generic
1246 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1247 and Pascal Costanza)
1248 * bug fix: condition-class instances corresponding to
1249 DEFINE-CONDITION forms are now created eagerly. (reported by
1250 Kalle Olavi Niemitalo on comp.lang.lisp)
1251 * bug fix: floating point printing is more accurate in some
1252 circumstances. (thanks to Simon Alexander)
1253 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1254 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1255 * bug fix: callbacks on OS X now preserve stack-alignment.
1256 (thanks to Cyrus Harmon)
1257 * enhancement: the x86-64 disassembler is much better at
1258 disassembling SSE instructions. (thanks to Lutz Euler)
1259 * enhancement: CHECK-TYPE on a variable now allows type-inference
1260 (thanks to Vincent Arkesteijn)
1261 * optimization: improved performance of EUC-JP external format.
1262 (thanks to NIIMI Satoshi)
1263 * optimization: performance improvements to IO on file streams of
1264 :ELEMENT-TYPE CHARACTER
1265 * optimization: much faster memory allocation on x86-64
1266 * optimization: faster garbage collections (latency and throughput)
1268 * optimization: faster bignum subtraction and division on x86 and x86-64
1269 (thanks to Lutz Euler)
1270 * optimization: more accurate type-inference for loops that use a
1271 floating point index variable or a negative step.
1273 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1274 * bug fix: add a workaround to SBCL looping infinitely at startup on
1275 Linux kernels with apparently buggy implementations of personality().
1276 (thanks to Svein Ove Aas)
1277 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1278 (thanks to David Lichteblau)
1279 * bug fix: local bindings shadow global symbol macros for
1280 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1281 * optimization: non-open coded uses of numeric comparison operators
1282 (e.g. >) no longer cons when called with more than one parameter
1283 on platforms supporting dynamic-extent allocation.
1284 * enhancement: saving cores with foreign code loaded is now supported
1285 on MIPS/Linux in addition to the previously supported platforms.
1286 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1287 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1288 * bug fix: division by zero in sb-sprof when no samples were collected
1289 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1290 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1291 (thanks to Alexander Kjeldaas)
1292 * new feature: ignoring the return values of destructive functions
1293 like NREVERSE signals a compile-time style-warning.
1294 (thanks to Kevin Reid)
1295 * new feature: the alignment of alien structure fields can be
1296 explicitly specified. (thanks to Cyrus Harmon)
1297 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1298 and dump core on SIGQUIT
1300 ** incompatible change: threads do not inherit values of specials
1301 from their parents (see manual)
1302 ** bug fix: threads stacks belonging to dead threads are freed by the
1303 next exiting thread, no need to gc to collect thread stacks anymore
1304 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1305 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1306 ** bug fix: dynamic variable and thread start related gc lossage
1307 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1309 * fixed some bugs revealed by Paul Dietz' test suite:
1310 ** SUBTYPEP is slightly more accurate on heinously complicated
1311 CONS types where some of the members have uncertain (in the
1312 NIL, NIL sense) type relationships to each other.
1314 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1315 no longer purified unless :PURIFY T is explicitly specified.
1316 ** Non-purified cores are significantly smaller than before
1318 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1319 * new feature: timers based on Zach Beane's excellent timer package
1320 * added support for the following external formats: koi8-u,
1321 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1322 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1323 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1324 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1325 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1326 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1327 * incompatible change: a threaded SBCL will no longer revert to
1328 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1329 * bug fix: interrupts are disabled until startup is complete; no
1330 more sigsegvs when receiving a signal to soon
1331 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1333 * bug fix: add a workaround for the memory randomization features in
1334 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1335 workaround will only be in effect on systems with the proc filesystem
1337 * bug fix: printing objects of type HASH-TABLE signals a
1338 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1340 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1341 have been running for over 50 days. (reported by Gilbert Baumann)
1342 * bug fix: the logic for getting names of functions gets less
1343 confused when confronded with alternate-metaclass
1344 funcallable-instances. (reported by Cyrus Harmon)
1345 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1346 consistent, even on internal alternate-metaclass objects.
1347 * bug fix: flush closure information collected by physical
1348 environment analysis prepass before the main pass. (bug reported
1350 * bug fix: compiler pack phase does not modify a hashtable, which is
1351 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1352 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1353 may be expanded. (reported by Alexander <malishev> on c.l.l)
1354 * bug fix: no more style-warnings when compiling code using LAST
1355 under high-SPEED low-SPACE settings. (reported by David Wallin
1357 * fixed some incompatibilities between SBCL's MOP and the MOP
1359 ** the METAOBJECT class is now implemented;
1360 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1361 STANDARD-OBJECT, as required;
1362 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1363 now compatible (as required by VALIDATE-SUPERCLASS); there
1364 remains a consistency requirement over the presence or absence
1365 of the FUNCTION class in the superclass list of finalized
1366 classes; see the manual for more details;
1367 ** the :AROUND method for COMPUTE-SLOTS on
1368 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1369 requested slot ordering.
1371 ** bug fix: parent thread now can be gc'ed even with a live
1373 ** bug fix: binding a special with PROGV to no value is not
1374 the same as that symbol not having been bound (thanks to
1376 ** bug fix: binding specials is thread safe (thanks to
1378 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1379 and SB-SPROF do not die with 'no handler for signal XX in
1380 interrupt_handle_now(..)' anymore
1381 ** bug fix: WITH-TIMEOUT works with multiple running threads
1382 * fixed some bugs revealed by Paul Dietz' test suite:
1383 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1384 the :method-class keyword argument.
1386 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1387 * new port: the Solaris operating system on x86 processors is now
1388 mostly supported, though some rough edges in the environment
1389 remain. (thanks to Daisuke Homma)
1390 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1391 space for its heap. (thanks to Thiemo Seufer)
1392 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1393 closures. (thanks to Thiemo Seufer)
1394 * minor incompatible change: eof selects abort in the debugger.
1395 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1396 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1398 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1399 deprecated, and will go away in a future revision of SBCL.
1400 * minor incompatible change: GC-ON and GC-OFF are no longer
1401 implemented with a counter, it does not matter how many times gc
1402 is switched on or off
1403 * bug fix: discriminating functions for generic function classes
1404 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1405 make invalid assumptions about method precedence order. (reported
1407 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1408 platforms. (thanks to Thiemo Seufer)
1409 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1410 * bug fix: correct pathname printing with printer escaping is on.
1411 (thanks to Kevin Reid)
1412 * bug fix: complex VOP definitions in "user-space" no longer trigger
1413 package locks. (reported by Zach Beane)
1414 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1415 for funcallable-instance functions, and is no different from
1417 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1418 characters in the current readtable. (reported by Nicholas Neuss)
1419 * bug fix: SUBTYPEP on various CONS types returns more a more
1420 accurate acknowledgment of its certainty.
1421 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1422 lists in some cases. This partially fixes bug 384.
1423 * flush all standard streams before prompting in the REPL and the
1425 * bug fix: signal handling and triggering gc do not conflict
1426 directly anymore, in particular a high frequency sb-sprof does
1427 not prevent gc from running
1428 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1429 approximation for timezone and DST information between the
1430 universal time epoch and the smallest negative 32-bit time_t.
1431 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1432 year 1899 so long as the encoded time is non-negative.
1433 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1434 the correct answer for non-constant rotate amounts when performing
1435 an inline 32-bit rotation.
1437 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1438 there is only one thread in the session
1439 ** bug fix: memory leak for streams created in one thread and
1440 written to in another
1441 ** bug fix: lockup when compiled with gcc4
1442 ** bug fix: race that allows the gc to be triggered when gc is
1444 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1445 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1447 ** bug fix: finished threads are gc'ed properly
1448 * fixed some bugs revealed by Paul Dietz' test suite:
1449 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1450 has arguments with a different set of applicable methods from
1451 the orignal arguments.
1452 ** The type error thrown by MAP now has a correct expected-type
1454 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1455 name a compiled function.
1456 ** Three MISC tests where a large bignum was improperly coerced to
1457 a float that couldn't represent that bignum during type
1458 derivation were fixed.
1459 ** SUBTYPEP can now handle types involving the negation of a
1460 list-form FUNCTION type.
1461 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1462 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1463 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1465 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1466 * New feature: Experimental support for bivalent streams: streams
1467 opened with :element-type :default now allow character and binary
1468 (unsigned-byte 8) I/O
1469 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1470 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1472 * bug fix: no more highly sporadic "couldn't check whether ~S is
1473 readable" when reading a stream and an interrupt hits in the middle
1474 of a select system call
1475 * compiler better recognizes complex arrays (reported by Eduardo
1477 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1478 for variables on SBCL built with linkage-tables. (reported by Luis
1480 * various error reporting improvements.
1481 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1482 (Thanks to Thiemo Seufer)
1483 * bug fix: nested reader invokations work correctly
1484 * bug fix: it is possible to have simultaneous references to foreign
1485 code and foreign data with the same name.
1487 ** added x86-64 support
1488 ** incompatible change: the threading api now works with thread
1489 objects instead of thread ids
1490 ** bug fix: threads are protected from signals and interruption when
1491 starting up or going down
1492 ** bug fix: a race where an exiting thread could lose its stack to gc
1493 ** bug fix: don't halt on infinite error in threads if possible
1494 ** fixed numerous gc deadlocks introduced in the pthread merge
1495 ** bug fix: fixed thread safety issues in read and print
1496 ** bug fix: debugger doesn't hang on session lock if interrupted at
1497 an inappropriate moment
1498 ** bug fix: run-program is now thread safe(r)
1499 ** bug fix: inner with-recursive-lock no longer releases the mutex
1500 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1501 * fixed some bugs revealed by Paul Dietz' test suite:
1502 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1503 EXPECTED-TYPE slots filled.
1504 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1506 ** MAKE-CONDITION accepts classes as type-designators.
1507 ** COMPILE may never return NIL.
1508 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1509 range before calling Unix time functions
1511 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1512 * numerous signal handling fixes to increase stability
1513 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1514 * minor incompatible change: we now correctly canonize default
1515 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1516 as per the MOP, rather than the historical (INITARG INITFUNCTION
1517 INITFORM). (reported by Bruno Haible)
1518 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1519 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1520 for more information.
1521 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1522 pathname is a directory pathname.
1523 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1524 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1526 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1527 :METACLASS argument in addition to a class name. (reported by
1528 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1529 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1530 (reported by Bruno Haible; patch from Gerd Moellmann)
1531 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1533 * bug fix: more cleanups to the floating point exception handling on
1534 x86-64 (thanks to James Knight)
1535 * bug fix: the compiler does not try to constant fold calls of
1536 COERCE and BIT-* functions when they return freshly constructed
1537 objects. (reported by Nikodemus Siivola and Paul Dietz)
1538 * optimization: improved the MIPS versions of generic (in the
1539 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1540 * optimization: direct conversion of (unsigned-byte 32) to floats on
1541 the PowerPC platform.
1542 * optimization: structure instances with raw slots now use less
1543 memory, and probably show better memory locality. (thanks to
1545 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1546 are treated as requests for stack allocation on the x86-64,
1547 Alpha-32, PPC and SPARC platforms.
1548 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1549 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1550 (thanks to Tony Martinez)
1552 ** gcing a dead thread can no longer lead to lockups
1553 ** threads block signals until they are set up properly
1554 ** errno is no longer shared by threads
1555 ** interrupt-thread restores the eflags register on x86
1556 ** fixed some lockups due to gc/thread interaction
1557 * fixed some bugs revealed by Paul Dietz' test suite:
1558 ** invalid dotted lists no longer raise a read error when
1559 *READ-SUPPRESS* is T
1560 ** signal an error if a symbol that names a declaration is used
1561 as the name of a type, or vice versa
1562 ** allow using the (declare (typespec var*)) abbreviation for
1563 (declare (type typespec var*)) with all type specifiers
1564 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1565 ** always return NIL from PPRINT-POP when OBJECT is NIL
1566 ** don't signal errors when pretty-printing malformed LABELS,
1567 FLET or MACROLET forms
1568 ** declarations in a DOLIST body are also in scope for the
1570 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1572 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1575 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1576 * fixed cross-compiler leakages that prevented building a 32-bit
1577 target with a 64-bit host compiler.
1578 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1579 opened with :IF-EXISTS :OVERWRITE.
1580 * fixed bug 281: error for an invalid qualifier in a short-form method
1581 combination method is not signalled until the faulty method is called.
1582 * bug fix: iteration variable type inferrer failed to deal with open
1583 intervals. (reported by Alan Shields)
1584 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1585 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1586 or more runtime options were provided to the sbcl binary.
1587 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1588 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1589 * optimization: there's now a fast-path for fixnum arguments in the
1590 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1591 * optimization: the code generated on x86-64 is more compact thanks
1592 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1593 * bug fix: floating-point exception handling now partly works on
1594 x86-64. (Thanks to James Knight)
1595 * improvement to the MIPS backend from Thiemo Seufer: C-style
1596 64-bit long long arguments and return values to alien functions
1598 * fixed some bugs revealed by Paul Dietz' test suite:
1599 ** the type-error signalled from WARN has a filled-in DATUM slot.
1600 ** the type-error required when a stream is not associated with
1601 a file has the stream as its datum.
1602 ** type-errors on single-floats on x86-64 no longer have
1603 :INVALID-OBJECT as the datum
1604 ** the type-errors signalled for invalid function names now have
1605 a correct expected type
1606 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1607 for structures defined with a :TYPE. Documentation strings for
1608 typed structures are no longer immediately discarded
1609 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1610 broadcast streams and synonym streams. FILE-LENGTH now also works
1611 on broadcast streams.
1613 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1614 * incompatible change: the --noprogrammer option, deprecated since
1615 version 0.7.5, has been removed. Please use the equivalent
1616 --disable-debugger option instead.
1617 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1619 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1620 inoperational for a while now) has been completely removed.
1621 * null lexical environments are now printed as #<NULL-LEXENV>,
1622 significantly reducing the amount of clutter in typical backtraces.
1623 * documentation on weak pointers, finalization, and after GC hooks
1624 has been added to the manual.
1625 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1626 as other specialized array types, is much faster. SUBSEQ and
1627 COPY-SEQ on such arrays have also been sped up.
1628 * optimization: EQL is now more efficient when at least other argument
1629 is known to be of type (OR FIXNUM (NOT NUMBER)).
1630 * fixed bug: the runtime is now less vulnerable to changes in the
1631 size of the SBCL object on OS X, and virtual memory is reserved for
1632 all spaces that need to be at a fixed address.
1633 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1634 * fixed bug: finalizers and after GC hooks that cause consing are now
1636 * fixed bug: compiler error messages and summaries are now printed to
1637 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1638 * fixed inference of the upper bound of an iteration variable.
1639 (reported by Rajat Datta).
1640 * fixed bug 211e: calling local functions with duplicated constant
1641 keyword argument no longer causes a bogus style warning about an
1643 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1644 ftype declaration to be disregarded. (reported by Dave Roberts)
1645 * fixed bug 373: caused by erronous compilation of references to alien
1646 variables in the runtime on ppc/darwin.
1647 * fixed bug 376: CONJUGATE type deriver.
1648 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1649 (reported by Baughn on #lisp)
1650 * a cross-compiler bug on non-x86 platforms has been identified and
1651 fixed. (thanks to Bruno Haible)
1652 * improvements to the MIPS runtime code for increased stability.
1653 (thanks to Thiemo Seufer)
1654 * increased the maximimum compact environment size to allow
1655 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1656 * partial workaround for bug 135: don't name the function we're
1657 calling for hairy cases of EVAL, so as not to accumulate one environment
1658 entry per call to EVAL. (reported by Kevin Reid)
1659 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1660 * optimization: type testing for non-vector arrays should be faster.
1661 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1663 * bug fix: setting 31st element of a bit vector to zero did not work
1665 * bug fix: redefining a class definition which failed due to a
1666 previous accessor / function clash now works (but see BUGS entry
1667 #380 for more problems in this area). (thanks to Zach Beane)
1668 * the long form of DEFINE-METHOD-COMBINATION disables method group
1669 checking when given a single method group with pattern *. (thanks
1671 * on x86 compiler supports stack allocation of results of simple
1672 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1673 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1674 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1675 * fixed some bugs related to Unicode integration:
1676 ** the restarts for recovering from input and output encoding
1677 errors only appear when there is in fact such an error to
1679 * fixed some bugs revealed by Paul Dietz' test suite:
1680 ** MISC.549 and similar: late transformation of unsafe type
1681 assertions into derived types caused unexpected code
1683 ** SCALE-FLOAT type deriver is less wrong.
1684 ** type derivers for EXP, LOG and similar functions compute result
1685 types for complex arguments better.
1686 ** (MISC.563) CONJUGATE type deriver works for very restricted
1688 ** out-of-line type testers for character strings are available.
1689 ** EQUAL compiler transform understands specialness of objects
1691 ** accessing double-floats stored on the stack now works on x86-64.
1692 ** debugger internals could sometimes create invalid lispobjs,
1693 resulting in GC crashes.
1694 ** MISC.548: type check weakening can convert required type into
1696 ** initialization forms for bindings are not in scope of free special
1699 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1700 * incompatible change: thread support for non-NPTL systems has
1701 been removed - locking is buggy and unreliable. A threaded
1702 SBCL build will now warn at startup and refuse to create
1703 new threads, unless futex support is detected in the kernel
1704 * incompatible change: the top level REPL now has only an ABORT
1705 restart associated with it, not TOPLEVEL and ABORT as it used to.
1706 TOP and TOPLEVEL are now available as debugger commands for
1707 returning to the top level.
1708 * incompatible change: forms evaluated in the REPL now use the
1709 global optimization policy.
1710 * incompatible change: user- and system-initialization files are
1711 no longer processed with LOAD, but by READ and EVAL; hence the
1712 global optimization policy, startup package, readtable, etc,
1714 * The .fasl file format number has been incremented because of
1715 various incompatible changes.
1716 * internal entry point details and argument counts no longer appear
1717 in backtraces unless explicitly requested by setting
1718 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1719 * built-in and standard functions no longer have names like "top
1720 level local call to FOO".
1721 * fixed bug 32: functions defined in non-null lexical environments
1722 now have more legible printed representation
1723 * fixed bug 33: functions defined in non-null lexical environemnts
1724 are now more amenable to inspection by INSPECT.
1725 * workaround for bug 354: XEPs no longer appear in backtraces unless
1726 explicitly requested.
1727 * fixed bug: receiving the signal which results from attempting to
1728 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1729 SIGBUS on other *BSDs) on architectures where the C stack is also
1730 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1731 to debugger confusion or wild instability. (reported by Cheuksan
1733 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1734 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1735 (reported by Lutz Euler)
1736 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1737 compiled code. (reported by Paul Dietz)
1738 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1739 specialized parameter to a method to something that is not TYPEP
1740 the specializer is now possible.
1741 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1742 face of package deletion.
1743 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1744 pathname. (reported by David Tolpin on c.l.l)
1745 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1746 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1747 STRING-STREAM and FILE-STREAM, respectively.
1748 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1749 than previously; in addition, its test suite is now run on build.
1750 (thanks to Luke Gorrie)
1751 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1752 * optimization: added a immediate representation for single-floats
1754 * fixed some bugs revealed by Paul Dietz' test suite:
1755 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1756 ** attempting to create a package with a colliding nickname causes
1757 correctable errors to be signalled.
1758 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1759 ** several x86-64 backend bugs related to sign-extension of immediate
1762 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1763 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1764 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1766 * fixed loading of multiply forward-referenced layouts.
1767 (thanks to Cheuksan Wang)
1768 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1769 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1770 (see COMPILE-FILE documentation for details of :PRINT option)
1771 * fixed bugs 19 and 317: fixed-format floating point printing is
1772 more accurate. This also fixes a bug reported by Adam Warner
1773 related to the ~@F format directive.
1774 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1776 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1777 dispatch table if the from-char is a dispatch macro character.
1778 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1779 by the wordsize no longer ignore the last word. (reported by Lutz
1781 * fixed bug in type checking of dynamic-extent variables. (reported
1783 * optimization: sequence traversal functions use their freedom to
1784 coerce function designators to functions.
1785 * optimization: code with many calls to CLOS methods specialized on
1786 CLOS classes has had redundant type checks removed.
1787 * optimization: added declarations to speed up operations that access
1788 the internal character database (for example STRING-UPCASE)
1789 * optimization: comparison operations between floats and sufficiently small
1790 fixnums no longer create extra rationals
1791 * fixed some bugs related to Unicode integration:
1792 ** portions of multibyte characters at the end of buffers for
1793 character-based file input are correctly transferred to the
1794 start of the buffer at the next read.
1795 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1796 passing it through to OPEN.
1797 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1798 argument given to internal calls to OPEN.
1799 ** the built-in comment readers (introduced by character sequences
1800 ";" and "#|") are more forgiving to encoding errors; they will
1801 STYLE-WARN and then attempt to resync the stream at a character
1802 boundary. (thanks to Teemu Kalvas)
1803 * fixed some bugs in the x86-64 port:
1804 ** Negative short int return values from c-calls are sign-extended
1806 ** The stack is aligned to 16-bytes for c-calls, as required by
1807 the ABI. (thanks to Cheuksan Wang)
1808 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1809 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1810 for enums. (thanks to Vincent Arkesteijn)
1811 ** Multiple small optimizations and bugfixes for floating point
1813 * fixed some bugs revealed by Paul Dietz' test suite:
1814 ** Space, Tab, Linefeed, Return and Page have the invalid
1815 secondary constituent character trait.
1816 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1818 ** WITH-INPUT-FROM-STRING should only update the index place on
1820 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1821 works more reliably.
1822 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1823 with one-dimensional arrays with fill pointers.
1824 ** TYPE-OF failed on a complex with an integer realpart and a
1826 ** compiler failure during type inference for the code of form
1827 (IF (EQL X (THE ...)) ...) (MISC.535).
1829 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1830 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1831 platform. The port supports 61-bit fixnums, large memory spaces
1832 and reloading shared object files.
1833 * enhancement: saving cores with foreign code loaded is now
1834 supported on ppc/Darwin in addition to the previously supported
1836 * enhancement: the statistical profiler now walks deeper into the
1837 call stack for more meaningful call-graphs and accrued time
1838 reports (x86/x86-64 only). It also now reports time spent in
1840 * enhancement: it is now possible to trace most individual methods
1841 of a generic function in addition to tracing the generic function
1843 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1845 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1846 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1847 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1848 produces an error. (thanks to Vincent Arkesteijn)
1849 * bug fix: NAMESTRING on pathnames with :WILD components in their
1850 directories works correctly. (thanks to Artem V. Andreev)
1851 * fixed bug 125: compiler preserves identity of closures. (reported
1853 * bug fixed: functions with &REST arguments sometimes failed with
1854 "Undefined function" when compiled with (DEBUG 3). (reported by
1856 * bug fix: overflow during compiling of setting element of a bit
1857 vector with constant index and value. (reported by Timmy Douglas)
1858 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1859 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1860 * on x86 compiler partially supports stack allocation of dynamic-extent
1862 * GO and RETURN-FROM do not check the extent of their exit points
1863 when compiled with SAFETY 0.
1864 * fixed some bugs related to Unicode integration:
1865 ** encoding and decoding errors are now much more robustly
1866 handled; it should now be possible to recover even from invalid
1867 input or output to the terminal. (thanks to Teemu Kalvas)
1868 ** provided a first cut at implementing STRING-TO-OCTETS and
1869 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1870 ** altered the SB-MD5 contributed module slightly, changing the
1871 interface just enough for it to be supportable for builds where
1872 lisp characters are not eight bits.
1873 * fixed some bugs revealed by Paul Dietz' test suite:
1874 ** the FORMATTER-generated functions for ~V[ conditionals require
1875 the correct number of arguments.
1876 ** READ-FROM-STRING returns the mandated second value when applied
1877 to displaced strings.
1878 ** the #\Rubout and #\Backspace characters are treated as invalid
1879 constituent characters by the tokenizer.
1881 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1882 * new feature: reloading changed shared object files with
1883 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1884 * new feature: references to foreign variables and functions
1885 can now be compiled and loaded before the corresponding shared
1886 object file is loaded, as long as the foreign definitions are
1887 available at runtime.
1888 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1889 supported. (thanks to Dan Debertin)
1890 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1891 just keywords. (thanks to Vincent Arkesteijn)
1892 * fixed bug #331: structure-class instances corresponding to
1893 DEFSTRUCT forms are now created eagerly.
1894 * fixed bug #345: backtraces from calls to undefined functions work
1895 on x86 as well. Related bug #61 is now also partially fixed on x86
1896 (backtraces from throws to unknown catch tags.)
1897 * bug fix: lambda-list parsing is now stricter vrt. order and number
1898 of lambda-list keywords.
1899 * bug fix: as specified by AMOP, an error is signalled if a
1900 class-option appears multiple times in a DEFCLASS form. (reported
1902 * bug fix: RANDOM can be compiled when the compiler derives the type
1903 of its numeric argument as a disjoint set of small integers.
1904 (reported by Paul Dietz)
1905 * bug fix: starting a core saved with shared objects loaded when
1906 those objects are not available no longer causes threaded SBCL to
1907 hang. (reported by Sean Ross)
1908 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1910 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1911 argument, which must always be NIL. (reported by Kalle Niemitalo)
1912 * bug fix: printing 1.0d+23 no longer results in an error.
1913 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1914 * bug fix: structure slot setters preserve evaluation order. (thanks
1916 * fixed some bugs related to Unicode integration:
1917 ** RUN-PROGRAM can allow its child to take input from a Lisp
1918 stream. (reported by Stefan Scholl)
1919 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1920 locales. (reported by Ken Causey)
1921 * fixed some bugs revealed by Paul Dietz' test suite:
1922 ** INCF, DECF and REMF evaluate their place form as specified in
1924 ** FORMATTER expands ~{ ~} iteration directives with V or #
1925 parameters correctly.
1926 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1927 consequent uses no arguments correctly.
1928 ** the system has a partial understanding of the (COMPLEX RATIO)
1930 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1933 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1934 * new feature: a build-time option (controlled by the :SB-UNICODE
1935 keyword feature, enabled by default) for building the system with
1936 support for the entire 21-bit character space defined by the
1938 * new feature: the system now has rudimentary external-format
1939 support; the primary user-visible change at this time is that
1940 characters with the high bit set (such as lower-case-e-acute) will
1941 print correctly to a terminal in a UTF-8 environment.
1942 * minor incompatible change: BASE-CHAR no longer names a class;
1943 however, CHARACTER continues to do so, as required by ANSI.
1944 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1945 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1946 has been moved to the SB-EXT package (temporarily re-exported from
1948 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1949 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1951 * fixed bug #351: better error-handlind and reporting for malformed
1953 * fixed bug #350: bignum-printing is now more memory-efficient,
1954 allowing printing of very large bignums, eg. (expt 2 10000000).
1955 (reported by Bruno Haible)
1956 * fixed bug #302: better primitive-type selection for intersection
1958 * fixed bug #308: non-graphic characters now all have names, as
1959 required. (reported by Bruno Haible)
1960 * bug fix: redefining a class with different superclasses now correctly
1961 removes it from the direct-subclasses of its previous superclasses.
1962 (reported by David Morse)
1963 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1964 new value now works. (reported by Bruno Haible)
1965 * bug fix: correct canonicalization of multiple non-standard slot
1966 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1967 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1968 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1969 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1970 now exists, an signals an error.
1971 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1972 during macroexpansion for non-iteration variables as well. (reported
1973 by Bruno Haible for CMUCL)
1974 * bug fix: Cyclic structures and unprintable objects in compiler
1975 messages no longer cause errors. (reported by Bruno Haible)
1976 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1977 and READ-FROM-STRING all now return a primary value of NIL if
1978 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1979 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1980 (reported by Bruno Haible for CMUCL)
1981 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1982 do not designate a condition. (reported by Bruno Haible for
1984 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1985 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1986 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1987 permitting resolution in favour of any of the conflicting symbols.
1988 (reported by Bruno Haible for CMUCL)
1989 * bug fix: EQUAL compiler optimizations is less aggressive on
1990 strings which can potentially compare true despite having distinct
1991 specialized array element types.
1992 * bug fix: unit enumerations can be defined without dividing by
1993 zero. (thanks to Vincent Arkesteijn)
1994 * FORMAT compile-time argument count checking has been enhanced.
1995 (report from Bruno Haible for CMUCL)
1996 * a partial workaround for the bug 262: the compiler does not try to
1997 inline-expand a local function doing RETURN-FROM from a deleted
1998 BLOCK. (thanks to Peter Denno for the bug report and to David
1999 Wragg for the simple test case)
2000 * fixed some bugs revealed by Paul Dietz' test suite:
2001 ** RENAME-PACKAGE allows all package designators as new package
2003 ** constraint propagation and lambda variable substitution are
2004 more cautious in dealing with partially deleted code.
2005 ** compiler sometimes lost reoptimization passes.
2006 ** CERROR, given a condition as condition designator, passes its
2007 remaining arguments to the continue format control without
2009 ** Case-altering FORMAT directives work correctly on non-ASCII
2011 ** The REAL type specifier handles bounds outside the floating
2012 point ranges without signalling FLOATING-POINT-OVERFLOW.
2013 ** Functions with IR1-transformations can create intercomponent
2014 references to global functions.
2015 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2017 ** FORMAT ~R treats a nil value for its first parameter correctly.
2019 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2020 * enhancement: saving cores with foreign code loaded is now
2021 supported on x86/NetBSD and sparc/Linux in addition to the previously
2022 supported platforms.
2023 * bug fix: on some platforms repeated installations caused multiple
2024 copies of HTML documentation to be installed -- should not happen
2025 any more. (reported by Stefan Scholl)
2026 * bug fix: parsing self-recursive alien record types multiple times
2027 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2028 original patch by Helmut Eller for CMUCL)
2029 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2030 (thanks to Richard Kreuter)
2031 * bug fix: defining classes whose accessors are methods on existing
2032 generic functions in other (locked) packages no longer signals
2033 bogus package lock violations. (reported by François-René Rideau)
2034 * bug fix: special variables as DEFMETHOD parameters no longer have
2035 associated bogus type declarations. (reported by David Wragg and
2037 * bug fix: read-write consistency on streams of element-type
2038 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2039 * bug fix: redefiniton of the only method of a generic function with
2040 no DEFGENERIC no longer emits a full WARNING. In addition,
2041 redefinition of generic functions with no DEFGENERIC to an
2042 incompatible lambda list now signals an error. (thanks to Zach
2044 * bug fix: DEFGENERIC now works even when there's a function of the
2045 same name in an enclosing lexical environment. (thanks to Zach
2047 * fixed compiler failure, caused by instrumenting code during
2048 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2049 * optimization: added loop analysis and improved register allocation
2050 * fixed some bugs revealed by Paul Dietz' test suite:
2051 ** POSITION on displaced vectors with non-zero displacement
2052 returns the right answer.
2053 ** (SIMPLE-STRING) is a valid type specifier for sequence
2055 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2057 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2058 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2060 ** The justification version of the FORMAT ~< directive treats
2061 non-zero minpad parameter correctly.
2063 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2064 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2065 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2066 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2067 the supported interface.
2068 * new feature: Single-stepping of code compiled with DEBUG 2 or
2069 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2070 * new feature: saving cores with foreign code loaded is now
2071 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2072 Timothy Moore's work for CMUCL)
2073 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2074 parameters to * instead of NIL if no initform is supplied.
2075 (reported by Johan Bockgaard)
2076 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2077 correctly when FUNCALL appears as the car of the form. Note:
2078 despite this FUNCALL forms are not currently subject to
2079 compiler-macro expansion. (port of Raymond Toy's fix for the
2080 same from CMUCL, reported by Johan Bockgaard)
2081 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2082 (thanks for Teemu Kalvas)
2083 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2084 case instead of terminating the iteration (thanks for Julian
2085 Squires, Sean Champ and Raymond Toy)
2086 * bug fix: incorrect expansion of defgeneric that caused a style
2087 warning. (thanks for Zach Beane)
2088 * bug fix: slot accessor effective method computation works properly
2089 for classes with multiple non-standard applicable methods on
2090 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2091 * on x86 compiler supports stack allocation of results of LIST and
2092 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2093 CMUCL implementation by Gerd Moellmann)
2094 * fixed some bugs revealed by Paul Dietz' test suite:
2095 ** FORMAT strings with both the ~<~:;~> form of the justification
2096 directive and pretty-printing directives cause an error.
2098 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2099 * incompatible change: the internal functions
2100 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2101 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2102 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2103 instead of the old functions.
2104 * new feature: on platforms where "dladdr" is available foreign
2105 function names now appear in backtraces. (based on Helmut Eller's
2107 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2108 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2110 * documentation: ASDF manual is now distributed with SBCL.
2111 * bug fix: SBCL can now load its contributed modules with REQUIRE
2112 even if the system-provided entries have been removed from
2113 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2115 * bug fix: backtraces involving undefined functions or assembly
2116 routines are more informative. (thanks to Brian Downing)
2117 * bug fix: mutually referent alien structures now work correctly.
2118 (reported by Rick Taube)
2119 * bug fix: structures defined by WITH-ALIEN can be referred to
2120 within other definitions in the same WITH-ALIEN.
2121 * bug fix: division operators (MOD, TRUNCATE and the like) with
2122 constant zero divisors and integer dividends no longer generate
2124 * bug fix: provide default methods for INPUT-STREAM-P and
2125 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2126 * bug fix: improve the detection and resolution of MOP metacycles
2127 (where effective method computation depends on the generic function
2128 having its effective method computed). (reported by Bruno Haible)
2129 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2130 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2131 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2132 * bug fix: pathnames with relative directory components can be
2133 represented relative to default pathnames.
2134 * optimization: in taking the GCD of bignums, reduce the two bignums
2135 to approximately the same size (using Euclid's algorithm) before
2136 applying the more sophisticated binary GCD. (thanks to Juho
2138 * optimization: COUNT on bitvectors now operates word-at-a-time.
2139 * optimization: ASH with a positive, but not necessarily constant,
2140 (leftwards) shift, when in a modular context, is compiled to a
2142 * fixed some bugs revealed by Paul Dietz' test suite:
2143 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2144 if the corresponding argument is NIL.
2145 ** FORMAT directives accepting a minpad parameter treat negative
2147 ** literal commas as character parameters to FORMAT directives are
2149 ** literal spaces directly after ~<Newline> directives within a
2150 format-logical-block (~:< ~@:>) do not induce :FILL-style
2151 conditional newlines.
2152 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2153 as specified: it no longer includes conditional newlines).
2154 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2156 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2157 :PER-LINE-PREFIX argument does not evaluate to a string.
2159 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2160 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2161 the manual for details; for now, package locks can be disabled by
2162 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2163 if no major problems are found then it is likely that they will be
2164 compiled in unconditionally.
2165 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2166 unsupported operators on all platforms. To load a shared library
2167 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2168 object file, link it into a shared library outside of SBCL and
2169 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2171 * bug workaround: ROOM T and the GC were not working together
2172 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2173 reporting facility aren't preserved. That reporting has been
2174 disabled, so now until and unless someone figures out how to make it
2175 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2176 * minor incompatible change: as threatened around sbcl-0.8.0, the
2177 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2178 The symbols are also exported from SB-PCL for backwards
2179 compatibility, but more so than before SB-PCL should be treated as
2180 an implementation-internal package.
2181 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2183 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2184 It is known as of this release not to work on the Alpha, however.
2185 * fixed bug #167: errors signalled due to illegal syntax in method
2186 bodies are now more legible.
2187 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2188 designators and can hence be used with TYPEP.
2189 * fixed bug #333: CHECK-TYPE now ensures that the type error
2190 signalled, if any, has the right object to be accessed by
2191 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2192 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2193 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2195 * fixed bug #334: programmatic addition of slots using specialized
2196 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2197 and :ALLOCATION :CLASS slots.
2198 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2199 float exponents. (rereported by Peter Seibel)
2200 * fixed a bug: #\Space (and other whitespace characters) are no
2201 longer considered to be macro characters in standard syntax by
2202 GET-MACRO-CHARACTER.
2203 * fixed bug: initialization of condition class metaobjects no longer
2204 causes an instance of the condition to be created. (reported by
2206 * fixed bug: it is now possible to have slots such that
2207 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2208 description is neither :INSTANCE nor :CLASS.
2209 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2210 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2211 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2212 non-standard SLOT-DEFINITION-ALLOCATION values.
2213 * fixed bugs: various race conditions handling exiting threads.
2214 CL-PPCRE's thread torture test now passes.
2215 * fixed arguably-a-bug: GC time proportional to number of threads in
2216 system even when most of them are idle
2217 * optimization: improved performance of BIT and SBIT on bit-vectors.
2218 * .fasl file incompatibility: The fasl file version number has
2219 been incremented because of changes associated with package locks.
2221 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2222 * minor incompatible change: the system no longer provides
2223 optimization hints (conditions which are TYPEP
2224 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2225 mode; these hints are still emitted when higher SPEED optimization
2227 * new contrib module: a sampling profiler (profiling by statistical
2228 sampling, rather than by instrumenting functions) is available as
2229 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2230 * the behaviour of the standard function ED is now customizeable by
2231 third parties through a hook variable: see ED's documentation
2232 string for information on the protocol.
2233 * the compiler no longer emits efficiency notes for (FUNCALL X)
2234 when the type of X is uncertain under default optimization
2236 * fixed bug 276: mutating a binding of a specialized parameter to a
2237 method to something that is not TYPEP the specializer is now
2239 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2240 exhibit the required behaviour on the x86 platform. (thanks to
2241 Peter van Eynde, Eric Marsden and Bruno Haible)
2242 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2243 even for difficult arguments. (reported by Peter Graves)
2244 * fixed bug 141a: the backquote printer now descends quoted
2246 * fixed another bug in backquote printing: no more destructive
2247 modification of the form's list structure. (reported by Brian
2249 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2250 move between its address being taken and the call to
2251 interrupt_thread, fixing a crashing race condition.
2252 * the SB-POSIX contrib implementation has been adjusted so that it
2253 no longer exhibits ridiculously poor performance when constructing
2254 instances corresponding to C structs.
2256 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2257 * minor incompatible change: the sb-grovel contrib now treats C
2258 structures as alien (in the sense of SB-ALIEN) objects rather than
2259 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2260 has implications for memory management of client code
2261 (sb-grovel-returned objects must now be manually managed) and for
2262 type safety (alien objects now have full types).
2263 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2264 used to control emission of compiler diagnostics, rather than the
2265 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2266 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2267 quality should be considered deprecated.
2268 * install.sh now installs the user manual as well
2269 * (not quite a new documentable feature, but worth considering in
2270 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2271 beginnings of a semantically meaningful condition hierarchy is
2272 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2274 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2275 designator as the defaults argument.
2276 * fixed bug: Displaced arrays whose displaced-to array has become
2277 too small now cause ARRAY-DIMENSION to signal an error, providing
2278 for safer bounds-checking. (reported by Bruno Haible)
2279 * fixed bug: DEFCLASS slot definitions with identical :READER and
2280 :WRITER names now signal a reasonable error. (reported by Thomas
2282 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2284 * fixed bug: Invalid slot specification errors now print correctly.
2285 (thanks to Zach Beane)
2286 * fixed bug 320: Shared to local slot value transfers in class
2287 redefinitions now happen corrently from superclasses as
2288 well. (reported by Bruno Haible)
2289 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2291 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2292 improper lists correctly. (reported by Bruno Haible)
2293 * fixed bug 313: source-transform for <fun-name> was erroneously
2294 applied to a call of a value of a variable with name <fun-name>.
2295 (reported by Antonio Menezes Leitao)
2296 * fixed bug 307: The obsolete instance protocol ensures that
2297 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2298 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2299 remove dead unknown-values globs from the middle of the stack.
2300 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2301 easier to resume long computations after using *BREAK-ON-SIGNALS*
2302 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2303 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2304 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2305 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2306 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2307 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2309 * fixed a (fairly theoretical) bug in string printing: if
2310 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2311 does not have array-element-type equal to the most general string
2313 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2314 function name. (thanks to Nikodemus Siivola)
2315 * fixed bug: compile-time format string checker failed on
2316 non-closed ~{. (reported by Thomas F Burdick)
2317 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2318 don't warn on legal loop code involving more than one aggregate
2319 boolean. (thanks to Nikodemus Siivola)
2320 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2321 in keyword position to MAKE-PACKAGE was not being reported as
2323 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2324 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2326 * fixed bugs 280 and 312: the checking for multiple definitions in a
2327 file is less likely to become confused by uses of inline
2329 * fixed bug: the #S reader macro performs the keyword coercion
2330 specified for slot names. (reported by Kalle Niemitalo)
2331 * fixed bug: lambda lists may contain symbols whose names start with
2332 & but are not lambda-list-keywords; their occurrence triggers a
2334 * fixed bug 321: define-method-combination argument lambda lists do
2335 not cause invalid code to be generated when &optional or &aux
2336 variables have default values. (reported by Bruno Haible)
2337 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2338 have CLOS classes; this appears also to have fixed reported
2339 instability in stack exhaustion detection.
2340 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2341 MUFFLE-WARNING when no associated restart is present is now
2343 * optimization: rearranged the expansion of various defining macros
2344 so that each expands into only one top-level form in a
2345 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2347 * optimization: used a previously little-used slot in symbols to
2348 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2350 * fixed some bugs revealed by Paul Dietz' test suite:
2351 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2353 ** Fixed an optimization bug related to inheritance of initforms
2354 from local to shared slots.
2355 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2356 ** CAST optimizer forgot to flush argument derived type.
2357 ** print/read consistency on floats is now orders of magnitude
2358 more likely. (thanks also to Bruno Haible for a similar report
2360 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2361 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2362 for objects of type REAL. Make it so.
2363 ** SXHASH is specified (infelicitously) to respect similarity,
2364 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2365 it so. (thanks to Markus Ziegler)
2366 ** on the Alpha, the compiler succeeds in compiling functions
2367 returning a known number of arguments greater than 63.
2368 ** fixed handling of invalid NIL arguments in keyword position
2370 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2372 ** provided a readably-printable representation for RANDOM-STATE
2374 ** ensured that pathnames, where they have a namestring, always
2375 print using #P"..." syntax.
2377 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2378 * Support for the forthcoming 2.0 version of the NetBSD kernel
2379 running on x86 hardware has been added. (thanks to Perry
2380 E. Metzger most immediately, and others for their past work)
2381 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2382 current release version; SBCL's OpenBSD support had been broken
2383 since about the time of OpenBSD's switch to ELF binary format.)
2384 * [placeholder for DX summary]
2385 ** user code with &REST lists declared dynamic-extent, under high
2386 speed or space and low safety and debug optimization policy.
2387 * The manual has been converted to Texinfo format and the debugger
2388 chapter from the cmucl manual has been added.
2389 * A facility has been added to extract documentation strings from
2390 sbcl and store them as Texinfo-formatted snippets for inclusion in
2391 the manual (via Texinfo's @include directive)
2392 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2393 the test case to Dave Roberts)
2394 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2395 pointers. (reported by Sean Ross)
2396 * bug fix: PROFILE output is printed nicely even for large numerical
2397 values. (thanks to Zach Beane)
2398 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2399 greater than 32 handle EOF correctly.
2400 * bug fix: on X86 an immediate argument of the IMUL instruction is
2401 correctly printed in disassembly. (thanks to Lutz Euler)
2402 * bug fix: class slots in redefined classes preserve their old
2403 values. (thanks to Bruno Haible and Nikodemus Siivola)
2404 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2405 succeeds. (reported by Marco Baringer)
2406 * fixed some bugs revealed by Paul Dietz' test suite:
2407 ** READ-SEQUENCE now works on ECHO-STREAMs.
2408 ** RATIONALIZE works more according to its specification. (thanks
2411 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2412 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2413 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2414 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2415 should matter to you only if you rebind the printer control
2416 variables and then find you want different bindings in the
2417 debugger than in the ordinary execution of your program.)
2418 * The runtime build system has been tweaked to support building
2419 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2420 assembler and linker. (thanks to Nikodemus Siivola)
2421 * Unbound, undefined, undeclared variables now trigger full
2422 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2423 more often programmer error than deliberate exploitation of undefined
2425 * optimization: the hash algorithm for strings has changed to one
2426 that is less vulnerable to spurious collisions. (thanks to Juho
2428 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2429 needless bounds checking. (thanks to Juho Snellman)
2430 * optimization: implemented multiplication as a modular
2431 (UNSIGNED-BYTE 32) operation on the PPC backend.
2432 * fixed some bugs revealed by Paul Dietz' test suite:
2433 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2435 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2436 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2437 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2439 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2441 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2443 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2444 their output stream on EOF from read.
2445 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2446 have been read to end-of-file.
2447 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2449 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2450 description of determination of which consecutive characters
2452 ** Printing the "Space" character with escaping on now yields "#\\ ",
2453 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2454 ** Reading floating-point numbers with *READ-BASE* set to a number
2455 less than 10 works correctly.
2456 ** Reading floating-point numbers with *READ-BASE* set to a number
2457 more than 10 works correctly.
2458 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2459 the readtable currently in effect.
2461 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2462 * minor incompatible change: parsing of namestrings on a physical
2463 (Unix) host has changed; numbers after the final #\. in a
2464 namestring are no longer interpreted as a version field. This is
2465 intented to be largely invisible to the user, except that the
2466 meaning of the namestring "*.*.*" has changed: it now refers to a
2467 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2468 should usually be replaced by
2469 (make-pathname :name :wild :type :wild :version :wild)
2470 with the added benefit that this is more likely to be portable.
2471 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2472 option to OPEN now signals an error if the file being opened
2473 exists; this may have an impact on existing code.
2474 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2475 signals received, on the PowerPC platforms (both Linux and
2476 Darwin). (thanks to Pierre Mai for pointing out the location of
2478 * several fixes on OS X: The system now builds and runs cleanly on
2479 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2480 (thanks to Brian Mastenbrook)
2481 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2482 second-resolution: integer multiples of 1/3600 between -24 and 24.
2483 (thanks to Vincent Arkesteijn)
2484 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2485 type when called with 1 argument; PEEK-CHAR checked type of
2486 PEEK-TYPE only after having read first character from a
2487 stream. (reported by Peter Graves)
2488 * bug fix: the garbage collector now has much better locality
2489 behaviour, and in particular no longer treats all memory as being
2490 exhausted when many small objects point to each other in a deeply
2492 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2493 recognized as being TYPEP their class.
2494 * bug fix: the PUSHNEW documentation string has been corrected.
2495 (thanks to Vincent Arkesteijn)
2496 * bug fix: defaulting of the value for the last of an atypically
2497 large number of multiple values being bound was not being
2498 performed correctly on the Alpha or PPC platforms
2499 * optimization: implemented multiplication as a modular
2500 (UNSIGNED-BYTE 32) operation on the x86 backend.
2501 * optimization: SEARCH on simple-base-strings can now be open-coded.
2502 (see also contrib/compiler-extras.lisp for inspiration for
2503 teaching the compiler about the Boyer-Moore algorithm).
2504 * value, returned by MAX (and MIN) called with several EQUALP, but
2505 not EQL, arguments now does not depend on compiler settings.
2506 * fixed some bugs revealed by Paul Dietz' test suite:
2507 ** in stack analysis liveness information is propagated from
2508 non-local entry points.
2509 ** pathwise CAST removing failed when the CAST node did not start
2511 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2512 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2514 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2515 host is already defined.
2516 ** RENAME-FILE works on streams instead of signalling an internal
2518 ** PEEK-CHAR uses the current readtable when determining whether
2519 or not a character is whitespace.
2520 ** MERGE-PATHNAMES handles the case when the pathname does not
2521 specify a name while the default-pathname specifies a version.
2522 ** Pathnames now stand a better chance of respecting print/read
2524 ** Attempting to use standardized file system operators with a
2525 pathname with invalid :DIRECTORY components signals a
2527 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2529 ** DIRECTORY on logical pathnames is more correct.
2530 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2531 signal a TYPE-ERROR if their argument is not a stream.
2532 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2533 designator argument does not designate a stream.
2534 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2535 examining the synonym.
2536 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2538 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2539 element-type larger than ([UN]SIGNED-BYTE 32).
2541 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2542 * When built with the :SB-FUTEX feature, threaded builds now take
2543 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2544 for faster/more reliable mutex and condition variable support.
2545 * Incompatible change (but one you probably shouldn't have been using
2546 anyway): the interface and code for arbitrating between multiple
2547 threads in the same user session has been redesigned.
2548 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2549 error when called without an explicit environment argument.
2550 (thanks to Nikodemus Siivola)
2551 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2552 confused about their position. (thanks to Adam Warner and Gerd
2554 * bug fix: Pretty printing backquoted forms with unquotations in the
2555 argument list position of various code constructs such as LAMBDA
2556 now works correctly. (reported by Paul Dietz)
2557 * bug fix: Pretty printing unquotations no longer loses all
2558 stream position information.
2559 * optimization: performance of string output streams is now less
2560 poor for multiple small sequence writes.
2561 * optimization: performance of CSUBTYPEP in the presence of complex
2562 expressions involving CONS and NOT many times has been improved.
2563 (reported by Paul Dietz)
2564 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2566 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2567 streams for the REPL, for the debugger, and so on. (thanks to
2569 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2570 * fixed some bugs revealed by Paul Dietz' test suite:
2571 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2572 is ignored if it is too small, rather than propagating through
2573 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2574 ** extremely complex negations of CONS types were not being
2575 sufficiently canonicalized, leading to inconsistencies in
2577 ** VALUES tranformer lost derived type.
2579 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2580 * fixed a bootstrapping bug: the build process no longer assumes
2581 that the various BOOLE-related constants have the same value in
2582 host and target lisps. (noted by Paul Dietz' test suite on an
2583 SBCL binary built from CLISP)
2584 * The system can now be dynamically linked on the MIPS platform,
2585 which enables dynamic loading of foreign code from Lisp. (thanks
2586 to Ralf Baechle for discussions on the MIPS ABI)
2587 * The system now records debugging information for its own source
2588 files in a filesystem-position-independent manner, relative to
2589 the "SYS" logical host.
2590 * fixed a compiler bug: MV-LET convertion did not check references
2591 to the "max args" entry point. (reported by Brian Downing)
2592 * tweaked disassembly notes to be less confident about proclaiming
2593 some instruction as an LRA. (thanks to Brian Downing)
2594 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2595 now each have their own history, command character, and other
2596 characteristics. (thanks to David Lichteblau)
2597 * fixed some bugs revealed by Paul Dietz' test suite:
2598 ** compiler failure in compiling LOGAND expressions including a
2600 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2601 shift greater than 32.
2602 ** FLUSH-DEST did not mark blocks for type check regeneration.
2603 ** HANDLER-CASE failed to accept declarations in handler clauses
2604 in some circumstances.
2606 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2607 * New code in contrib/sb-introspect (still probably not entirely
2608 stable yet) provides some support for smart Lisp development
2609 environments like SLIME.
2610 * The conditions signalled for errors occurring when loading .fasl
2611 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2612 in a way which should help ASDF recover gracefully.
2613 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2614 stuff has been cleaned up. If you code contrib/ stuff, this might
2615 affect you, and you can look at contrib/README, contrib/STANDARDS,
2616 and/or the 0.8.4.27 diff to check.
2617 * In full calls the compiler now does not generate checks for declared
2618 argument types for all arguments.
2619 * various threading fixes
2620 ** and some experimental patches which didn't make it into
2621 the main tree for this release, but which are shipped in
2622 contrib/experimental-thread.patch as a possible fix for some
2623 failures (deadlock, spinning...) in GC-intensive multithreaded
2625 * fixed PPC build problem (source code incompatibility of different
2626 library versions): added offsetof() hackery which attempts to divine
2627 where glibc maintainers put uc_mcontext today
2628 * fixed bug 282: compiler does not trust type assertions while passing
2629 arguments to a full call.
2630 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2631 &OPTIONAL VALUES type parameter.
2632 * fix bug 214: algorithm for noting rejected templates is now more
2633 similar to that of template seletion. (also reported by rydis on
2635 * fixed bug 141b: printing backquoted information readably and prettily
2636 inserts a space where necessary.
2637 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2638 (CHARACTER 10) are now reported as errors, rather than propagated
2639 as unknown types. (reported by piso on #lisp)
2640 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2641 with values NIL and :ERROR. (thanks to Milan Zamazal)
2642 * fixed bug 191c: CLOS now does proper keyword argument checking as
2643 described in CLHS 7.6.5 and 7.6.5.1.
2644 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2645 longer raise an error; further, using a list as a for-as-arithmetic
2646 counter now raises a meaningful error.
2647 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2648 now understood by sequence creation functions such as MAKE-SEQUENCE
2650 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2651 a STRING-INPUT-STREAM.
2652 * compiler enhancement: SIGNUM is now better able to derive the type
2654 * type declarations inside WITH-SLOTS are checked. (reported by
2656 * fixed some bugs revealed by Paul Dietz' test suite:
2657 ** incorrect optimization of TRUNCATE for a positive first
2658 argument and negative second.
2659 ** compiler failure in let-convertion during flushing dead code.
2660 ** compiler failure while deriving type of TRUNCATE on an
2661 interval, containing 0.
2662 ** ASH of a negative bignum by a negative bignum count now returns
2664 ** intersection of CONS types now canonicalizes properly, fixing
2665 inconsistencies in SUBTYPEP.
2667 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2668 * incompatible change: The --disable-debugger command line
2669 option now clobbers the debugger at a more fundamental
2670 level, by redefining #'INVOKE-DEBUGGER instead of by
2671 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2672 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2673 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2674 enter the debugger REPL and then suffer recursive errors
2675 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2676 while under the new system, BREAK in --disable-debugger mode
2677 terminates the system just as an unhandled error would.
2678 * fixed compiler performance when processing loops with a step >1;
2679 * bug fix: DOCUMENTATION now retrieves generic function
2680 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2681 support has been systematized, and now supports the methods
2682 specified by ANSI, along with a default method and a method for
2683 slot documentation. (reported by Nathan Froyd)
2684 * bug fix: effective methods associated with a generic function are
2685 no longer cached over a change of that generic function's method
2686 combination. (reported by Andreas Fuchs)
2687 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2688 names a non-existent directory. (thanks to Andreas Fuchs)
2689 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2690 the PPC platform, lead to stack corruption; this has been fixed.
2691 (reported by Rainer Joswig)
2692 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2693 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2694 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2695 arithmetic in general, is now much more reliable on the PPC
2697 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2698 platform now returns the right answer.
2699 * optimization: restored some effective method precomputation in
2700 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2701 precomputation is now tunable.
2702 * optimization: compiler-internal data structure use has been
2703 reviewed, and changes have been made that should improve the
2704 performance of the compiler by about 20%.
2705 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2706 simple-base-strings and simple-bit-vectors is improved.
2707 * optimization: the optimization of 32-bit logical and arithmetic
2708 functions introduced in version 0.8.3 on the x86 has been
2709 implemented on the mips, ppc and sparc platforms; an
2710 implementation of the same facility, but for 64-bit arithmetic,
2711 has been added for the alpha.
2712 * microoptimization: the compiler is better able to make use of the
2713 x86 LEA instruction for multiplication by constants.
2714 * bug fix: in some situations compiler did not report usage of
2715 generic arithmetic in (SPEED 3) policy.
2716 * bug 145b fix: compiler used wrong type specifier while converting
2717 MEMBER-types to numeric.
2718 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2720 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2721 index argument now works properly on the Alpha platform.
2722 * bug fix: floating point exception treatment on the Alpha platform
2724 * bug fix: FILE-POSITION works much better on string input and
2725 output streams. (thanks to Nikodemus Siivola)
2726 * bug fix: many threading/garbage collection symptoms sorted.
2727 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2728 might be pseudo-atomic.
2729 * internal change: Stopping for GC is now done with signals not
2730 ptrace. GC is now done in whichever thread wanted it, instead of
2732 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2734 * bug fix: result form in DO is not contained in the implicit
2736 * incompatible change: ICR structure is changed; the value part of
2737 CONTINUATION is now called LVAR; corresponding functions are
2738 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2739 * added type deriver for ISQRT (thanks to Robert E. Brown).
2740 * bug fix: better support for loading from the command line when an
2741 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2743 * fixed some bugs revealed by Paul Dietz' test suite:
2744 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2745 ** ROUND and FROUND now give the right answer when given very
2746 small float arguments.
2747 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2749 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2750 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2751 ** LCM should return a non-negative integer.
2752 ** PARSE-INTEGER returned the index of a terminator instead of the
2753 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2754 ** PARSE-INTEGER returned an incorrect index being applied to a
2756 ** LCM with two arguments of 0 returns 0 rather than signalling
2758 ** unsigned addition of a 32-bit constant with the high bit set no
2759 longer causes an internal compiler error on the x86.
2760 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2761 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2762 with negative last argument.
2763 ** byte specifiers with zero size and position no longer cause
2764 an error during type derivation.
2765 ** bignum multiplication on the Alpha platform now returns the
2767 * porting: The system now builds on SuSE AMD64, although it still
2768 generates a 32-bit binary.
2769 * .fasl file incompatibility: The fasl file version number has
2770 been incremented (because of the changes to internal compiler
2771 data structures referred to above).
2773 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2774 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2775 more accurately, on the Darwin kernel running on PowerPC hardware.
2776 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2777 * Compiler code deletion notes now signal a condition of type
2778 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2779 an associated MUFFLE-WARNING restart.
2780 * The compiler now performs limited argument count validation of
2781 constant format strings in FORMAT, and where appropriate in ERROR,
2782 CERROR and WARN. (thanks to Gerd Moellmann)
2783 * New ASDF-INSTALL contrib can be used for automatic download and
2784 installation of third-party Lisp code from CCLAN or other sites
2786 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2787 which forces another thread to execute a function supplied by the
2789 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2790 now accept and act upon their :ELEMENT-TYPE keyword argument.
2791 (reported by Martin Atzmueller, Edi Weitz)
2792 * bug fix: FILE-POSITION now accepts position designators up to
2793 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2794 is the greater. (thanks to Patrik Nordebo)
2795 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2796 Kalle Olavi Niemitalo)
2797 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2798 printable. (reported by Eric Marsden)
2799 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2800 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2801 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2802 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2803 (thanks to Stig Sandoe)
2804 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2805 UNREAD-CHAR now correctly includes the unread character in the
2806 target sequence. (thanks to Gerd Moellmann)
2807 * bug fix in threaded builds: the system can now be suspended and
2808 resumed by shell job control with minimal disruption.
2809 * bug fixes in times and timezones >2038AD
2810 * better handling of "where is GNU make?" problem in build scripts
2811 (thanks to Nikodemus Siivola)
2812 * new optimization: inside a named function any reference to a
2813 function with the same name is considered to be a self-reference;
2814 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2815 optimization quality.
2816 * new optimization on x86: logical functions and + now have
2817 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2818 used when the result is truncated to 32 bits.
2819 * VALUES declaration is partially enabled.
2820 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2821 * fixed some bugs revealed by Paul Dietz' test suite:
2822 ** The system now obeys the constraint imposed by
2823 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2824 types form a lattice under type intersection.
2825 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2826 ** ASSOC now ignores NIL elements in an alist.
2827 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2828 and (1+ MOST-POSITIVE-FIXNUM) answers.
2829 ** The addition of a method with invalid qualifiers to a generic
2830 function does not cause an error to be signalled immediately;
2831 a warning is signalled, and the error is generated only on
2832 calling the generic function.
2833 * changed .fasl file version number, in part to add type codes for
2834 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2835 obscure ANSI requirements
2837 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2838 * fixed bug 148: failure to inline-expand a local function left
2839 garbage, confusing the compiler.
2840 * fixed bugs 3cd: structure slot readers perform type check if the
2841 slot can have an invalid value (i.e. it is either not initialized
2842 or can be written with a less specific slot writer).
2843 * bug fix: the compiler now traps array references to elements off
2844 the end of an array; previously, the bounds checking in some
2845 circumstances could go off-by-one.
2846 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2848 * type declarations for array element types now obey the description
2849 on the CLHS page "Declaration TYPE", as per discussions on
2850 sbcl-help around 2003-05-08. This means that a declaration
2851 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2852 declaration, all references to BAR will be asserted or assumed
2853 (with THE, so dependent on compiler policy) to involve objects of
2854 type FOO. Note that no such declaration is implied in
2855 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2856 * declared types of functions from the "Conditions"
2857 chapter. (reported by Paul Dietz)
2858 * bug fix: CERROR accepts a function as its first argument.
2859 * bug fix: NTH an NTHCDR accept a bignum as index
2860 arguments. (reported by Adam Warner)
2861 * optimization: character compare routines now optimize comparing
2862 against a constant character. (reported by Gilbert Baumann)
2863 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2864 argument now works properly on the MIPS platform.
2865 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2866 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2867 declared to have a functional type, does not cause an error
2869 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2870 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2871 * fixed bug: if last continuation of a deleted block has a
2872 destination, this destination should be deleted too. (reported by
2874 * fixed a bug in the bootstrap process: the host compiler's values
2875 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2876 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2877 test case from Patrik Nordebo)
2878 * improved the ability of the disassembler on the PPC platform to
2879 provide helpful disassembly notes.
2880 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2881 the class in more cases than previously.
2882 * bug fix: FILE-POSITION now understands :START and :END for
2883 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2884 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2885 8) data. (thanks to David Lichteblau)
2886 * bug fix: it is possible to add a method to a generic function
2887 without lambda list.
2888 * bug fix: reader failed to signal END-OF-FILE inside an
2889 object representation. (reported by Nikodemus Siivola)
2890 * fixed some bugs revealed by Paul Dietz' test suite:
2891 ** LAST and [N]BUTLAST should accept a bignum.
2892 ** condition slot accessors are methods.
2893 ** (VECTOR NIL) is a subtype of STRING.
2895 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2896 * minor incompatible change: some nonsensical specialized lambda
2897 lists (used in DEFMETHOD) which were previously ignored now signal
2899 * minor incompatible change: the system is now aware of the types of
2900 variables in the COMMON-LISP package, and will signal errors for
2901 most violations of these type constraints (where previously they
2902 were silently accepted).
2903 * minor incompatible change: COMPILE-FILE now uses the freedom
2904 afforded (ANSI 3.2.2.3) to use derived function types for
2905 functions defined in the same file. This also permits the system
2906 to warn on static type mismatches and function
2907 redefinition. (Currently it does not work with high DEBUG level.)
2908 * minor incompatible change: VALUES declaration is disabled.
2909 * When issuing notes, the compiler now signals a condition of type
2910 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2911 restart for use in user handlers. It is expected that the
2912 COMPILER-NOTE condition will eventually become a condition
2913 supertype to a hierarchy of note types, which will then be
2914 handleable in a similar fashion. However, at the moment, no such
2915 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2916 but it's an implementation detail, not a classification for the
2918 * Changes in type checking closed the following bugs:
2919 ** type checking of unused values (192b, 194d, 203);
2920 ** template selection based on unsafe type assertions (192c, 236);
2921 ** type checking in branches (194bc).
2922 * A short form of VALUES type specifier has ANSI meaning (it has
2923 increased the number of situations when SBCL cannot perform type
2925 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2926 keywords or constants is permissible.
2927 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2928 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2929 classes. (thanks to Antonio Martinez)
2930 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2931 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2932 argument to a pretty-print stream. Instead, it leaves any such
2933 operations to DESCRIBE-OBJECT methods.
2934 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2936 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2937 lambda lists. (thanks to David Lichteblau)
2938 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2939 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2940 (thanks to Gerd Moellmann)
2941 * fixed bug 246: increased compilation speed of long
2942 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2944 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2946 * DEFCONSTANT now throws a condition of type
2947 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2948 constant to a non-EQL value; CONTINUE and ABORT restarts
2949 respectively change and preserve the value.
2950 * fixed bug 63: The code walker, part of the implementation of CLOS,
2951 is now better at handling symbol macros.
2952 * bug fix: There is no longer an internal implementation type named
2953 CL:LENGTH. (reported by Raymond Toy)
2954 * bug fix: In macro-like defining macros/special operators the
2955 implicit block does not enclose the lambda list.
2956 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2957 enclosed in parentheses) are not suitable as type specifiers, and
2958 their use properly signals an error now.
2959 * bug fix: An argument count mismatch for a type specifier in code
2960 being compiled no longer causes an unhandled error at compile
2961 time, but signals a compile-time warning.
2962 * fixed simple vector readable printing
2963 * bug fix: DESCRIBE takes more care over whether the class
2964 precedence list slot of a class is bound before accessing it.
2965 (reported by Markus Krummenacker)
2966 * bug fix: FORMATTER can successfully compile pretty-printer format
2967 strings which use variants of the ~* directive inside.
2968 * bug fix: SEARCH now applies its TEST predicate to the elements of
2969 the arguments in the correct order. (thanks to Wolfhard Buss)
2970 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2971 in type inference. (thanks to Robert E. Brown)
2972 * bug fix: Reading in symbols with an explicit package name of ""
2973 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2974 * fixed some bugs revealed by Paul Dietz' test suite:
2975 ** NIL is now allowed as a structure slot name.
2976 ** Arbitrary numbers, not just REALs, are allowed in certain
2977 circumstances in LOOP for-as-arithmetic clauses.
2978 ** Multiple class redefinitions before slot access no longer
2979 causes a type error.
2980 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2981 association between the name and a class.
2982 ** Generic functions with non-standard method-combination and over
2983 five methods all of which return constants no longer return NIL
2984 after the first few invocations. (thanks to Gerd Moellmann)
2985 ** CALL-NEXT-METHOD with no arguments now passes the original
2986 values of the arguments, even in the presence of assignment.
2987 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2989 ** DISASSEMBLE works with closures and funcallable instances.
2990 ** ADD-METHOD now returns the generic function, not the new method.
2991 ** FIND-METHOD signals an error if the lengths of the specializers
2992 is incompatible with the generic function, even if the ERRORP
2994 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2995 which its argument is a member.
2996 ** DEFCLASS only redefines the class named by its class-name
2997 argument if that name is the proper name of the class;
2998 otherwise, it creates a new class.
2999 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3000 of the UNBOUND-SLOT condition to the name of the slot.
3001 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3002 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3003 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3004 SLOT-MAKUNBOUND in the specified fashion.
3006 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3007 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3008 cross-compilation host. As a consequence, we can now bootstrap our
3009 way up to SBCL starting with a bare gcc toolchain and human-readable
3010 source code (first the source to CLISP, then the source to SBCL).
3011 * A contributed module containing a partial implementation of the
3012 simple-streams interface has been included. (thanks to Rudi
3014 * A contributed module implementing the RFC1321 Message Digest
3015 Algorithm, known as MD5, has been included.
3016 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3017 no longer has any effect, as the code controlled by this feature
3018 has been deleted. (As far as we know, no-one has ever built using
3019 this feature, and its semantics were confused in any case).
3020 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3021 work on conditions (as required by the ANSI specification),
3022 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3023 expected behaviour on conditions. Users should note, however,
3024 that such behaviour is not required by the ANSI specification,
3025 and so use of this behaviour may render their code unportable.
3026 * fixed some bugs revealed by Paul Dietz' test suite:
3027 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3029 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3030 ** SXHASH on condition objects no longer returns NIL.
3031 ** :ALLOCATION :CLASS slots are better treated; their values are
3032 updated on class redefinition, and initforms inherited from
3033 superclasses are applied.
3034 ** REMOVE-METHOD returns its generic function argument even when
3035 no method was removed.
3036 ** SHARED-INITIALIZE now initializes the values of the requested
3037 slots, including those with :ALLOCATION :CLASS.
3038 ** ALLOCATE-INSTANCE now works on structure classes defined via
3039 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3041 ** SLOT-EXISTS-P now works on conditions, as well as structures
3043 ** MAKE-LOAD-FORM now has the required methods on
3044 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3045 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3046 keyword, and now implements the SLOT-NAMES argument.
3047 ** methods with &OPTIONAL arguments no longer allow too many
3048 arguments to be passed in the call without error.
3049 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3050 option is consistent with the required arguments of the generic
3051 function lambda list.
3052 * bug fix: REQUIRE accepts a string designator. (Thanks to
3054 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3055 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3056 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3057 * bug fix: The compiler now checks for duplicated variables in macro
3059 * bug fix: SETQ on globals returns the correct value.
3060 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3061 not a COMPILER-ERROR (followed by some other strange error on
3062 choosing the CONTINUE restart).
3063 * bug fix: make.sh and friends are now more consistent in the way that
3064 they look for GNU "make".
3066 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3067 * experimental native threads support (on x86 Linux >=2.4 only).
3068 This is not compiled in by default: you need to add :SB-THREAD to
3069 the target features. See the "Beyond ANSI" chapter of the manual
3071 * fix for longstanding nonANSIism: The old distinction between
3072 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3073 The return value from CL:FIND-CLASS is now a CLOS class, and
3074 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3075 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3076 * An interface to the MetaObject Protocol, as described in Kiczales,
3077 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3078 MIT Press, 1991, is available from the SB-MOP package.
3079 * incompatible change: the SB-PCL package should now be considered
3080 a private implementation detail, and no longer a semi-private MOP
3082 * minor incompatible change: due to rearrangement for threads, the
3083 control stack and binding stack are now allocated at arbitrary
3084 addresses instead of being hardcoded per-port. Users affected by
3085 this probably have to be doing advanced things with shared
3086 libraries, and will know who they are.
3087 * minor incompatible change: Previously, all --eval forms used were
3088 processed with READ before any of them were processed with EVAL.
3089 Now each --eval form is processed with both READ and EVAL before
3090 the next --eval form is processed. (Thus package operations like
3091 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3092 work as the user might reasonably expect.)
3093 * minor incompatible change: *STANDARD-INPUT* is now only an
3094 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3096 * minor incompatible change: Y-OR-N-P is now character-oriented,
3097 not line oriented. Also, YES-OR-NO-P now works without errors.
3098 (thanks to Antonio Martinez)
3099 * sb-aclrepl module improvements: an integrated inspector, added
3100 repl features, and a bug fix to :trace command.
3101 * Known functions, which cannot be open coded by the backend, are
3102 considered to be able to check types of their arguments. (fixing
3103 a bug report by Nathan J. Froyd)
3104 * fixed a bug in computing method discriminating functions: It is
3105 now possible to define methods specialized on classes which have
3106 forward-referenced superclasses. (thanks to Gerd Moellmann)
3107 * fixed evaluation order in optional entries (reported by Gilbert
3109 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3110 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3111 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3112 required-by-AMOP NAME argument, as well as CLASS and
3113 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3114 * fixed bug 20: DEFMETHOD can define methods using names that are
3115 not the proper names of classes to designate class specializers.
3116 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3117 Unix file descriptors, instead of blowing up. (thanks to Antonio
3119 * Garbage collection refactoring: user-visible change is that a
3120 call to the GC function during WITHOUT-GCING will not do garbage
3121 collection until the end of the WITHOUT-GCING. If you were doing
3122 this you were probably losing anyway.
3123 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3124 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3125 TYPEP the latter but not the former.
3126 * The compiler issues a full WARNING for calls to undefined functions
3127 with names from the CL package.
3128 * MAP-INTO for a vector destination is open coded. (reported by
3129 Brian Downing on c.l.l)
3130 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3131 documentation string.
3132 * fixed some bugs revealed by Paul Dietz' test suite:
3133 ** COPY-ALIST now signals an error if its argument is a dotted
3135 ** Condition slots are now accessed more correctly in the presence
3136 of multiple initargs for a given slot.
3137 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3138 exclude restarts of the same name associated with a different
3140 ** DEFCLASS of forward-referenced classes with another
3141 forward-referenced class in the superclasses list no longer
3143 ** Condition slots are now initialized once each, not multiple
3144 times. (thanks to Gerd Moellmann)
3145 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3147 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3148 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3149 arguments contain duplicated elements.
3150 ** RESTART-CASE understands local macros.
3151 ** RESTART-CASE associates exactly its own restarts with a condition.
3152 ** ENDP in safe mode checks its argument to be of type LIST.
3153 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3154 in question is unbound.
3155 ** Optimized MAKE-INSTANCE functions no longer cause internal
3156 assertion failures in the presence of duplicate initargs.
3157 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3158 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3159 propagated even in the ctor optimized implementation of
3161 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3163 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3164 * a better implementation of SXHASH on (simple) bit vectors,
3165 measured both in execution speed and in distribution of results
3166 over the positive fixnums, has been installed. Likewise, a better
3167 implementation of EQUAL for simple bit vectors is now available.
3168 * fixed CEILING optimization for a divisor of form 2^k.
3169 * fixed bug 240 (emitting extra style warnings "using the lexical
3170 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3171 by Antonio Martinez)
3172 * fixed SXHASH, giving different results for NIL depending on type
3173 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3174 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3175 variable. (found by Rolf Wester)
3176 * SBCL does not ignore type declarations for special
3177 variables. (reported by rif on c.l.l 2003-03-05)
3178 * some bug fixes in contrib/sb-aclrepl/
3179 * fixed some bugs revealed by Paul Dietz' test suite:
3180 ** a bug in the CONS type specifier, whereby the CAR and CDR
3181 types got intertwined, has been fixed;
3182 ** the type system is now able to reason about the interaction
3183 between INTEGER and RATIO types more completely;
3184 ** APPEND, [N]REVERSE and NRECONC check that those their
3185 arguments, which must be proper lists, are really so;
3186 ** An array specialized to be unable to hold elements has been
3187 implemented, as required -- yes, really -- by ANSI;
3188 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3189 on malformed property lists;
3191 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3192 * incompatible packaging change: in line with Unix convention,
3193 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3194 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3195 * REQUIRE and PROVIDE are now optionally capable of doing something
3196 useful. See the documentation string for REQUIRE.
3197 * infrastructure for a managed SBCL contrib system: contributed
3198 modules in this release include:
3199 ** the ASDF system definition facility;
3200 ** an interface to the BSD Sockets API;
3201 ** an ACL-like convenience interface to the repl;
3202 (thanks to Kevin Rosenberg)
3203 ** an implementation of ROTATE-BYTE, with efficient implementation
3205 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3206 gives a closer approximation to the right answer than previously.
3207 (thanks to Raymond Toy)
3208 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3209 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3210 optional environment arguments, as required by ANSI.
3211 * fixed bugs in other functions taking environment objects, allowing
3212 calls with an explicit NIL environment argument to be compiled
3214 * fixed bug 228: primary return values from
3215 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3216 COMPILE or FUNCTION.
3217 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3218 :TYPE will no longer signal errors on innocuous objects.
3219 * fixed bug 231b: SETQ is better at respecting type declarations in
3220 the lexical environment.
3221 * fixed a bug in DEFCLASS: classes named by symbols with no or
3222 unprintable packages can now be defined.
3223 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3224 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3225 * fixed compiler failure related to checking types of functions.
3226 (reported by Robert E. Brown)
3227 * the compiler is now much more consistent in its error-checking
3228 treatment of bounding index arguments to sequence functions: in
3229 (SAFETY 3) code, errors will be signalled in almost all cases if
3230 invalid sequence bounding indices are passed to functions defined
3231 by ANSI to operate on sequences.
3232 * fixed a bug in the build procedure: documentation of SBCL-specific
3233 packages is now preserved and available in the final Lisp image.
3234 * lifted FDEFINITION lookup out of loops in the implementation of
3235 many list operations. (thanks to Robert E. Brown)
3236 * fixed a bug in the reader: the #n# reader macro now works for
3237 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3238 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3239 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3240 E. Brown and Tony Martinez respectively)
3241 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3242 SLOT-BOUNDP: in particular, it is now able to optimize them much
3243 better, and is now not vulnerable to having packages renamed.
3244 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3245 always called when a slot is not present in an instance. (thanks
3247 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3248 longer signal an error on unreading a character following EOF on
3249 the previous constituent stream. (thanks to Tony Martinez)
3250 * fixed some bugs revealed by Paul Dietz' test suite:
3251 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3252 not just nonnegative fixnums;
3253 ** the logical bit-array operators such as BIT-AND now accept an
3254 explicit NIL for their "opt-arg" argument (to indicate a
3255 freshly-consed result bit-array);
3256 ** ELT now signals an error on an invalid sequence index in safe
3258 ** the type system is now cleverer about negations of numeric
3259 types, and consequently understands the BIGNUM and RATIO types
3261 ** the type system is now cleverer about the interaction between
3262 INTEGER and RATIO types: while bugs still remain, many more
3263 cases are accurately computed;
3264 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3265 if it is in the last clause;
3266 ** CONSTANTLY now correctly returns a side-effect-free function in
3268 ** DECLARE is no longer treated as a special-operator; in
3269 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3270 * incremented fasl file version number due to the change in the
3271 DEFSTRUCT-SLOT-DESCRIPTION structure.
3273 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3274 * minor incompatible change: code processed by the "interpreter" or
3275 EVAL now has a compilation optimization policy of (DEBUG 2)
3276 (changed from (DEBUG 1)) to improve debuggability of interactive
3277 development, and to allow the use of the debug RETURN command in
3279 * an experimental implementation of the RETURN command for the
3280 debugger has been included. (thanks to Frederik Kuivinen)
3281 * fixed bug 62: constraints were not propagated into a loop.
3282 * fixed bug in embedded calls of SORT (reported and investigated by
3284 * fixed some bugs revealed by Paul Dietz' test suite:
3285 ** printing and reading of arrays with some dimensions having
3286 length 0 (thanks to Gerd Moellmann);
3287 ** BOA constructor with &AUX argument without a default value does
3288 not cause a type error;
3289 ** CONSTANTP now returns true for all self-evaluating objects.
3291 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3292 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3293 accessors that are related by inheritance, as specified in the
3294 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3295 Valtteri Vuorikoski)
3296 * The compiler is now able to inline functions that were defined in
3297 a complex lexical environment (e.g. inside a MACROLET).
3298 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3300 * Support for the upcoming FreeBSD-5.0 release has been included.
3301 (thanks to Dag-Erling Smorgrav)
3302 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3303 effect when it is not in a toplevel context.
3304 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3305 stand a better chance of being correct. (thanks to Gerd
3307 * fixed bug in COERCE, which now signals an error on coercing a
3308 rational to a bounded real type which excludes the expected
3310 * The compiler is now able to derive types more accurately from the
3311 COERCE and COMPILE functions.
3312 * fixed bug 223: functional binding is considered to be constant
3313 only for symbols in the CL package.
3314 * fixed bug 231: SETQ did not check the type of a variable being set
3315 (reported by Robert E. Brown)
3316 * A new optimization for MAKE-INSTANCE has been included, fixing
3317 various bugs (including relating to :ALLOCATION :CLASS slots and
3318 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3320 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3321 ** As required by ANSI, LOOP now disallows anonymous collection
3322 clauses such as COLLECT I in conjunction with aggregate boolean
3323 clauses such as THEREIS (= I 1);
3324 ** LOOP now signals an error when any variable is reused in the
3325 same loop (including the potentially useful construct analogous
3326 to WITH A = 1 WITH A = (1+ A);
3327 ** IT is only a special loop symbol within the first clause of a
3328 conditional loop clause;
3329 ** LOOP with a typed iteration variable over a hashtable now
3330 signals a type error iff it should.
3331 * fixed some other bugs revealed by Paul Dietz' test suite:
3332 ** FILE-STREAM now names the class previously known as FD-STREAM;
3333 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3334 argument) no longer signals an error;
3335 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3336 of the slot symbol, rather than using the current package
3337 ((:CONC-NAME "") continues to intern the slot's name in the
3339 * incremented fasl file version number, because of the incompatible
3340 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3341 of the new implementation of DEFINE-COMPILER-MACRO.
3343 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3344 * Support for building SBCL for MIPS platforms running in
3345 little-endian mode has now been checked in, and basic
3346 functionality on said platforms verified.
3347 * minor incompatible change: PCL now records the pathname of a file
3348 in which methods and the like are defined, rather than its
3350 * minor incompatible change: TRUENAME now considers the truename of
3351 a file naming a directory to be the pathname with :DIRECTORY
3352 component indicating that directory.
3353 * minor incompatible change: a NAMED clause in the extended form of
3354 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3355 reason for the previous behaviour is unclear.
3356 * more systematization and improvement of CLOS and MOP conformance
3357 in PCL (thanks to Gerd Moellman and Pierre Mai):
3358 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3360 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3361 primary methods with no specializers;
3362 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3364 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3365 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3366 FORWARD-REFERENCED-CLASSes; error reporting on
3367 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3369 ** SXHASH on CLOS instances now uses a slot internal to the
3370 instance to return different numbers on distinct instances,
3371 while preserving the same return value through invocations of
3373 ** DEFMETHOD signals errors when methods with longer incongruent
3374 lambda lists are added to generic functions;
3375 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3376 CLASS, as specified in AMOP;
3377 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3378 on the order returned by the primary method for classes of
3379 class STANDARD-CLASS;
3380 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3381 * fixed some bugs shown by Paul Dietz' test suite:
3382 ** DOLIST puts its body in TAGBODY;
3383 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3385 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3386 value producing form;
3387 ** if more variables are given to PROGV than values, extra
3388 variables are bound and made to have no value;
3389 ** NSUBSTITUTE on list arguments gets the right answer with
3391 ** ELT signals an error of type TYPE-ERROR when the index argument
3392 is not a valid sequence index;
3393 ** LOOP signals (at macroexpansion time) an error of type
3394 PROGRAM-ERROR when duplicate variable names are found;
3395 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3396 ** FUNCALL of special-operators now cause an error of type
3398 ** PSETQ now works as required in the presence of side-effecting
3399 symbol-macro places;
3400 ** NCONC accepts any object as its last argument;
3401 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3403 ** loop-for-as-package does not require a package to be explicitely
3405 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3407 * fixed bug 166: compiler preserves "there is a way to go"
3408 invariant when deleting code.
3409 * fixed bug 172: macro lambda lists with required arguments after
3410 &REST arguments now cause an error to be signalled. (thanks to
3412 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3413 bug. (thanks to Matthew Danish)
3414 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3416 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3417 arguments are lexically rebound. (thanks to Gerd Moellmann and
3419 * fixed bug 194: error messages are now more informative when there
3420 is no primary method applicable in a call to a generic
3421 function. (thanks to Gerd Moellmann)
3422 * fixed bug in command line argument checking (thanks to Julian
3424 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3425 (thanks to Matthew Danish)
3426 * incremented fasl file version number, because of the
3427 SXHASH-related changes in the layout of CLOS data structures
3429 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3430 * minor incompatible change: The runtime (the Unix executable named
3431 "sbcl") is now much pickier about the .core files it will load.
3432 Essentially it now requires .core files to descend from the same
3433 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3434 as the runtime does. (The intent is to prevent the crashes which
3435 can occur, and which can even be reported as mysterious failures,
3436 when people patch the sources or change the build parameters
3437 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3438 sbcl and .core files.)
3439 * fixed bug: VALUES-LIST is no longer optimized away.
3440 * fixed bug 142: The FFI conversion of C string values to Lisp
3441 string values no longer conses excessively. (thanks to Nathan
3442 Froyd porting Raymond Toy's fix to CMU CL)
3443 * began to systematize and improve MOP conformance in PCL (thanks to
3444 Nathan Froyd, Gerd Moellman and Pierre Mai):
3445 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3447 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3448 ** FINALIZE-INHERITANCE is now called on class finalization;
3449 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3450 argument precedence order.
3451 * fixed bug 202: The compiler no longer fails on functions whose
3452 derived types contradict their declared type.
3453 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3454 so it can be non-toplevel.
3455 * The fasl file version number has changed (because of the new
3456 implementation of DEFMACRO).
3457 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3458 safe code, that any length requirement by their type-specifier
3459 argument is valid. The exceptions to this are described in bug
3461 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3462 functions now check the types of their inputs as required by ANSI.
3463 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3464 introduced symbol is DECLAREd to be SPECIAL.
3465 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3466 * fixed bug: :COUNT argument to sequence functions may be negative
3467 * fixed bug: body of DO-SYMBOLS may contain declarations
3468 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3469 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3470 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3471 symbol macro only once
3472 * fixed printing of call frame when argument list is unavailable
3473 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3474 * compiler no longer signals WARNING on unknown keyword
3477 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3478 * A beta-quality port to the mips architecture running Linux,
3479 based on the old CMUCL backend, has been made. It has been tested
3480 on a big-endian kernel, and works sufficiently well to be able to
3481 rebuild itself; it has not been tested in little-endian mode.
3482 * fixed an inconsistency between gencgc.c and purify.c which made
3483 dumping/loading .core files unreliable
3484 * fixed bug 120a: The compiler now deals correctly with IFs where
3485 the consequent is the same as the alternative, instead of
3486 misderiving the return type. (thanks to Alexey Dejneka)
3487 * fixed bug 113: Logical pathnames are now dumpable (the logical
3488 host is resolved at load-time, throwing an error if it is not
3490 * fixed bug 174: FORMAT's error message is slightly clearer when a
3491 non-printing character is used in a format directive.
3492 * fixed several bugs in compiler checking of type declarations, i.e.
3493 violations of the Python "declarations are assertions" principle
3494 (thanks to Alexey Dejneka)
3495 * fixed several bugs in PCL's error checking (thanks to Gerd
3497 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3499 * fixed bug in compilation of functions as first class values
3500 (thanks to Antonio Martinez-Shotton)
3501 * The compiler's handling TYPE-ERRORs which it can prove will
3502 inevitably happen at runtime has been cleaned up and corrected
3503 in several ways. (thanks to Alexey Dejneka)
3504 * improved argument type checking for various basic arithmetic
3505 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3506 lavished on them in the past that they can be compiled in many
3507 ways in different special cases
3508 * fixed bug 181: compiler checks validity of user supplied type
3510 * cleaned up code flushing in optimization: Function calls which
3511 should signal errors for safety purposes (e.g. which ANSI says
3512 should signal errors when their arguments are of incorrect type)
3513 are no longer optimized away.
3514 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3515 * incremented fasl file version number, because changes in the
3516 implementation of sequence functions like COERCE caused
3517 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3518 in old inline expansions) to become undefined. (Actually these
3519 changes were later undone, so we might very well be binary
3520 compatible with 0.7.7 after all, but leaving the version number
3521 incremented seemed like the simplest and most conservative
3524 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3525 * An alpha-quality port to the parisc architecture running Linux,
3526 based on the old CMUCL backend, has been made. This, even more so
3527 than the other backends, should be considered still a work in
3528 progress; known problems include that the Linux kernel in 64-bit
3529 mode does not propagate the correct sigcontext structure to
3530 userspace, and consequently SBCL on a parisc64 kernel will not
3532 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3533 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3534 suppressed.) Also now that the compiler is looking at declarations
3535 in the environment, it checks optimization declarations as well,
3536 and suppresses inlining when (> DEBUG SPEED).
3537 * More fixes have been made to treatment of floating point exception
3538 treatment and other Unix signals. In particular, floating point
3539 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3540 * The detection and handling of control stack exhaustion (infinite
3541 or very deeply nested recursion) has changed. Stack exhaustion
3542 detection is now done by write-protecting pages at the OS level
3543 and applies at all optimization settings; when found, a
3544 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3545 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3546 be caught using IGNORE-ERRORS.
3547 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3548 correctly when transforming recursive LABELS functions to LETs.
3549 (thanks to Alexey Dejneka)
3550 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3551 that are names of constants or global variables.
3552 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3553 alien routines with docstrings.
3554 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3555 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3557 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3558 (thanks to Eric Marsden)
3559 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3560 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3561 * Bug fix: The SPARC backend can now compile functions involving
3562 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3563 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3564 to a functions expecting a PATHNAME-DESIGNATOR.
3565 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3566 lambda lists. (thanks to Alexey Dejneka)
3567 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3568 functions so that EXPORTing the name of the class doesn't cause
3569 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3570 to Antonio Martinez for reporting this)
3571 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3572 constant-folded without failing an assertion. (thanks to Einar
3573 Floystad Dorum for reporting this)
3574 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3575 types are now dealt with more correctly by the compiler.
3576 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3577 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3578 behaviour analogous to RENAME-FILE. This puts its behaviour more
3579 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3581 * The fasl file version number has changed again. (because of the
3582 bug fix involving the names of PCL MAKE-INSTANCE functions)
3584 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3585 * bug fix: Floating point exceptions are treated much more
3586 consistently on the x86/Linux and PPC/Linux platforms.
3587 * Array initialization with :INITIAL-ELEMENT is now much faster for
3588 cases when the compiler cannot open code the array creation, but
3589 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3590 array accesses have also seen a speed increase.
3591 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3592 specified. (This was at the root of some bad interactions between
3593 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3595 * bug fix: Internal error arguments for undefined functions are now
3596 computed correctly on the PPC/Linux platform.
3597 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3598 Raymond Toy's patch for CMU CL)
3599 * Support for the Solaris 9 operating environment has been included
3600 (thanks to Daniel Merritt)
3601 * A very ugly but hopefully complete draft of the missing FFI chapter
3602 of the manual has been created by reformatting the corresponding
3603 CMU CL manual chapter into (currently very ugly and incoherent)
3604 DocBook and bringing it up to date for SBCL behavior. Thus, the
3605 manual is now essentially complete, at least by my extreme
3606 once-and-only-once standards, whereby it's acceptable to refer to
3607 the doc strings of SB-EXT functions as the primary documentation.
3608 * The fasl file version number has changed again, due to cleanup of
3609 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3610 is no longer a static symbol.)
3612 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3613 * SBCL now builds with OpenMCL (version 0.12) as the
3614 cross-compilation host; also, more progress has been made toward
3615 bootstrapping under CLISP.
3616 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3618 * bug 158 fixed: The compiler can now deal with integer loop
3619 increments different from 1; fixing this turned out also to fix
3621 * bug 169 fixed: no more bogus warnings about using lexical bindings
3622 despite the presence of perfectly good SPECIAL declarations (thanks
3623 to David Lichteblau)
3624 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3625 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3626 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3628 * bug 180 fixed: Method combination specifications no longer ignore
3629 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3630 * bug fix: Structure type predicate functions now check their argument
3631 count as they should.
3632 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3633 correctly. (thanks to Pierre Mai)
3634 * minor incompatible change: The --noprogrammer option is deprecated
3635 in favor of the new --disable-debugger option, which is very similar.
3636 (The major difference is that it takes effect at a slightly different
3637 time at startup, causing handling of errors in --sysinit and
3638 --userinit files will be affected differently.) The
3639 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3640 been added to allow this functionality to be controlled from ordinary
3641 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3642 maintainers, who might want to run non-interactive scripts to
3643 build SBCL cores which will later be used interactively.)
3644 * minor incompatible change: The LOAD function no longer, when given
3645 a wild pathname to load, loads all files matching that pathname.
3646 Instead, an error of type FILE-ERROR is signalled.
3648 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3649 * bug 147 fixed: The compiler preserves its block link/count
3650 invariants more correctly now so that it doesn't crash. (thanks
3652 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3654 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3655 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3656 no-value-for-this-character as NIL (as specified by ANSI).
3657 * HOST-NAMESTRING on physical pathnames now returns a string that is
3658 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3659 (thanks to Christophe Rhodes)
3660 * The Alpha port handles icache flushing more correctly. (thanks to
3662 * More progress has been made toward bootstrapping under CLISP. (thanks
3663 to Christophe Rhodes)
3664 * The fasl file format has changed again, because dynamic loading
3665 on OpenBSD (which has non-ELF object files) motivated some cleanups
3666 in the way that foreign symbols are transformed and passed around.
3667 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3668 is no longer treated as whitespace by the reader, but instead as
3669 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3670 |A
\7fB|, instead of A as it used to.
3672 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3673 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3674 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3675 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3676 this as of 0.7.1.45, but was left out of the previous news section
3677 (thanks to Dan Barlow)
3678 * SBCL now runs on the Solaris operating system on SPARC architectures
3679 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3680 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3681 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3682 * SPARC backend cleanups, allowing builds of cores optimized for V8
3683 and V9 SPARCS, and also emission of code targeted to a particular
3684 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3686 * SBCL is closer to bootstrapping under CLISP, thanks to various
3687 fixes by Christophe Rhodes.
3688 * The fasl file format has changed again, to allow the compiler's
3689 INFO database to support symbol macros.
3690 * The user manual (in doc/) is formatted into HTML more nicely.
3691 (thanks to coreythomas)
3692 * The system is smarter about SUBTYPEP relationships, especially
3693 those involving NOT types (including types such as ATOM which are
3694 represented internally using NOT types). Thus SUBTYPEP is less
3695 likely to return (VALUES NIL NIL) in general, and in particular
3696 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3698 * The fasl file format has changed again, because the internal
3699 representation of types now includes a new slot to support the new
3700 SUBTYPEP-of-NOT-types logic.
3701 * (not a change in the main branch of SBCL, but a related prototype
3702 which can hopefully be merged into the main branch of SBCL in the
3703 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3704 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3705 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3706 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3707 dispatch macro character combinations. (thanks to Alexey Dejneka)
3708 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3709 that superficially look like logical namestrings correctly.
3710 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3712 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3713 default supplied-p) for &optional and &key arguments. (thanks to
3716 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3717 * incompatible change: The compiler is now less aggressive about
3718 tail call optimization, doing it only when (> SPACE DEBUG) or
3719 (> SPEED DEBUG). (This is an incompatible change because there are
3720 programs which relied on the old CMU-CL-style behavior to optimize
3721 away their unbounded recursion which will now die of stack overflow.)
3722 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3723 for non-GENCGC systems has been increased to 20M (since that
3724 seems much closer to the likely performance optimum for modern
3725 systems than the old 4M value was)
3726 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3727 and *DEBUG-PRINT-LEVEL*
3728 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3729 of CMU CL's support for SPARC, and various endianness and other
3730 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3731 * new syntactic sugar for the Unix command line: --load foo.bar is now
3732 an alternate notation for --eval '(load "foo.bar")'.
3734 ** The system now detects stack overflow and handles it gracefully,
3735 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3736 optimization settings. (This is a good thing in general, and
3737 its introduction in this version should be particularly timely
3738 for anyone whose code fails because of suppression of tail
3740 ** The system now hunts for the C variable "environ" in a more
3741 devious way, to avoid segfaults when the C library version differs
3742 between compile time and run time. (thanks to Christophe Rhodes)
3743 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3744 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3745 ** The compiler no longer issues bogus style warnings for undefined
3746 classes in the same source file as the DEFCLASSes which defined
3747 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3749 ** fixes in CONDITION class precedence list for undefined function
3750 errors (thanks to Alexei Dejneka)
3751 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3752 correctly. (thanks to Dan Barlow)
3753 ** portability fixes aiming at bootstrapping under CLISP (thanks
3754 to Dave McDonald and Christophe Rhodes)
3755 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3756 ** fixes in type translation and and type inference (thanks to
3758 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3759 ** various fixes in the new ports (thanks to Dan Barlow)
3760 * several changes related to debugging:
3761 ** suppression of tail recursion, as noted above
3762 ** stack overflow detection, as noted above
3763 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3764 is now the default. (For some time encapsulation has been more
3765 reliable than the breakpoint-based :ENCAPSULATE NIL
3766 implementation, at least on X86 systems; and I just noticed that
3767 encapsulation also seems closer to the spirit of the ANSI
3770 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3772 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3773 up properly again. (There was a packaging bug in 0.7.0 which
3774 left their definitions in SB-SYS::LOAD-FOREIGN and
3775 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3776 vital for most things which interface to C-level interfaces,
3777 like extensions working with sockets or databases or
3778 Perl-compatible regexes or whatever, and the need to fix
3779 this bug is the main reason that 0.7.1 was released so
3781 ** DEFGENERIC is now choosier about the methods it redefines, so that
3782 reLOADing a previously-LOADed file containing DEFGENERICs does
3783 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3784 cycle now works as it should. (thanks to Alexey Dejneka)
3785 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3786 fixed by Christophe Rhodes. (He actually submitted this patch
3787 months ago, and I delayed until after 0.7.0.)
3788 ** Bug 111 (internal compiler confusion about runtime checks on
3789 FUNCTION types) was fixed by Alexey Dejneka.
3790 * Some internal cleanups (getting rid of variables which aren't
3791 needed now that the byte interpreter is gone) caused the fasl
3792 file format number to change again.
3794 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3795 * major incompatible change: The default fasl file extension, i.e. the
3796 default extension for files produced by COMPILE-FILE, has changed
3797 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3799 ** There are many changes in the implementation of the compiler.
3800 SBCL is now essentially a compiler-only implementation of ANSI
3801 Common Lisp. EVAL still "interprets" a few special cases, but
3802 almost all the interesting cases are handled by creating
3803 a LAMBDA expression, calling COMPILE on it, then calling
3804 FUNCALL on the result.
3805 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3806 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3807 Since the code is newer, there might still be some new bugs
3808 (though not as many as before Martin Atzmueller's fixes:-). But
3809 the new code is substantially simpler and clearer, and hopefully
3810 any remaining bugs will be simpler, less fundamental, and more
3811 fixable then the bugs in the old code.
3812 ** The revised compiler is still a little unsteady on its feet.
3814 *** The debugging information it produces (particularly the names
3815 of FUNCTION objects) is sometimes much less useful than what
3816 the old compiler produced.
3817 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3818 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3819 within a MACROLET) has been temporarily weakened.
3820 ** There are new compiler optimizations for various functions:
3821 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3822 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3823 *** the math functions TRUNCATE, FLOOR, and CEILING
3824 *** the function-of-all-trades COERCE
3825 Mostly these should be transparent, but there's one
3826 potentially-annoying problem (bug 117): when the compiler
3827 inline-expands a function and does type analysis on the result,
3828 it can create control paths which have type mismatches, and
3829 when it can't prove that those control paths aren't taken,
3830 it will issue WARNINGs about the type mismatches. This is
3831 a particular problem in practice for the new sequence functions.
3832 It's not clear how this should be fixed, and for now, a
3833 workaround is given in the entry for 117 in the BUGS file.
3834 ** (Because of the interaction between the two previous items --
3835 occasional inlining problems and new inline expansions -- some
3836 of the new sequence function optimizations won't really kick in
3837 completely until debugging information, and then inlining, are
3838 straightened out in some future version.)
3839 * minor incompatible changes:
3840 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3841 DIRECTORY no longer implicitly promotes NIL slots of its
3842 pathname argument to :WILD. In particular, when you ask for the
3843 contents of a directory (which you used to be able to do without
3844 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3845 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3846 ** changes in behavior that ANSI explicitly defines to be
3847 implementation dependent:
3848 *** The new compiler-only implementation still conforms with ANSI,
3849 but acts a little different than before. Besides the obvious
3850 changes in performance tradeoffs (that the cost per form passed
3851 to EVAL has gone up, and the cost per form executed by EVAL
3852 has gone down), the behavior of the system changes a little
3853 because there are no longer any interpreted function objects.
3854 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3855 e.g. doing COMPILE on the output of interactive DEFUN is
3857 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3859 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3860 has changed from (:CL) to NIL.
3861 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3862 e.g. #\Newline and #\Tab, don't have names specified in the
3863 ANSI Common Lisp standard, is now based on their ASCII symbolic
3864 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3865 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3866 are no longer used for output.
3867 ** changes in internal implementation constants:
3868 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3869 4 million. (If your application spends a lot of time GCing and
3870 you have a lot of RAM, you might want to experiment with
3871 increasing it even more.)
3872 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3873 However, almost all old code should still continue to work without
3874 immediate update, as SB-C-CALL is now a (deprecated) nickname
3876 ** Old operator names in the style DEF-FOO are now deprecated in
3877 favor of new corresponding names DEFINE-FOO, for consistency with
3878 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3879 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3880 internal symbols, but a few supported extensions like
3881 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3882 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3883 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3884 etc. as you get deeper into recursive calls to the debugger
3885 command loop, instead of the old "5]", "5]]", "5]]]"
3886 sequence. (I was motivated to do this when squabbles between
3887 ILISP and SBCL left me very deeply nested in the debugger. In the
3888 short term, this change will probably provoke more ILISP/SBCL
3889 squabbles, but hopefully it will be an improvement in the long run.)
3890 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3891 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3892 function, since declaiming return types involving aliens is
3893 (1) annoyingly messy to do by hand and (2) vital to efficient
3894 compilation of code which calls such functions.
3895 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3896 longer reexported by the SB-EXT package. They're solely useful
3897 for alien code, so it seems more logical that you should get
3898 them from the SB-ALIEN package, not in SB-EXT.
3899 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3900 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3901 features. Instead, the code that they used to control is always
3902 built into the system.
3903 * many other bug fixes
3904 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3905 advantage of the new EVAL-WHEN stuff and to clean them up in
3906 general, and they are now more ANSI-compliant in a number of
3907 ways. Martin Atzmueller is responsible for a lot of this.
3908 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3910 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3911 *** correct ERROR type for various file operations
3912 *** some fixes for Lisp streams
3913 *** DEFMETHOD syntax checking
3914 *** changing old weird representation of debug information as
3915 strings (which, among their other deficiencies, don't transform
3916 correctly when you rename packages, and don't change their
3917 print representation when you change things like *PACKAGE*
3918 and *PRINT-LENGTH*) to symbols and lists of symbols
3919 He also made several improvements and fixed several bugs in DESCRIBE.
3920 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3922 *** misbehavior of WRITE-STRING/WRITE-LINE
3923 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3924 and several other LOOP problems as well
3925 *** DIRECTORY when similar filenames are present
3926 *** DEFGENERIC with :METHOD options
3927 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3928 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3929 *** argument ordering in FIND with :TEST option
3930 *** mishandled package designator argument in APROPOS-LIST
3931 *** various problems in the backquote readmacro
3932 *** a bug in APROPOS
3933 *** probably some others that I'm not describing very well here,
3934 since the CVS log documents them by reference to sbcl-devel
3935 messages, and the SourceForge archives aren't working well.:-(
3936 ** Dan Barlow improved the Alpha port (and is making progress on the
3937 PPC port, for those of you who think different).
3938 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3939 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3940 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3941 continues to work on the SPARC port (for those of you in a position
3942 to look down upon our little PC-compatible boxes from a great height).
3943 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3944 and uses that copy, rather than the current dynamic value, when
3945 it's trying to decide whether to truncate output. Thus e.g.
3946 (let ((*print-lines* 50))
3947 (pprint-logical-block (stream nil)
3949 (let ((*print-lines* 8))
3950 (print (aref possiblybigthings i) stream)))))
3951 should now truncate the logical block only at 50 lines, instead of
3952 often truncating it at 8 lines, as it did before.
3953 * The doc/cmucl/ directory, containing old CMU CL documentation
3954 from the time of the fork, is no longer part of the base system.
3955 SourceForge has shut down its anonymous FTP service, and with it
3956 my original plan for distributing the old CMU CL documentation
3957 there. For now, if you need these files you can download an old
3958 SBCL source release and extract them from it.
3959 * The fasl file version number changed again, for dozens of reasons,
3960 some of which are apparent above.
3962 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3963 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3964 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3965 patch, so that DISASSEMBLE output is much nicer.
3966 * The code in the SB-PROFILE package now seems reasonably stable.
3967 I still haven't decided what the final interface should look like
3968 (I'd like PROFILE to interact cleanly with TRACE, since both
3969 facilities use function encapsulation) but if you have a need
3970 for profiling now, you can probably use it successfully with
3971 the current CMU-CL-style interface.
3972 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3973 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3974 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3975 link now returns the dangling link itself, and for similar
3976 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3977 link itself. (In these cases the old code signalled an error and
3978 looped endlessly, respectively.) Thus, DIRECTORY now works even
3979 in the presence of dangling and cyclic symbolic links.
3980 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3981 is now a supported extension again, since the consensus on
3982 sbcl-devel was that it can be useful for ordinary development
3983 work, not just for debugging SBCL itself.
3984 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3985 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3986 that currently-defined functions might be redefined later with
3987 different return types.
3988 * Hash tables can be printed readably, as inspired by CMU CL code
3989 of Eric Marsden and SBCL code of Martin Atzmueller.
3990 * better error handling in CLOS method combination, thanks to
3991 Martin Atzmueller porting Pierre Mai's CMU CL patches
3992 * more overflow fixes for >16Mbyte I/O buffers
3993 * A bug in READ has been fixed, so that now a single Ctrl-D
3994 character suffices to cause end-of-file on character streams.
3995 In particular, now you only need one Ctrl-D at the command
3996 line (not two) to exit SBCL.
3997 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3999 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4000 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4001 does the right thing.
4002 * The implementation of some type tests, especially for CONDITION
4003 types, is now tidier and maybe faster, due to CMU CL code
4004 originally by Douglas Crosher, ported by Martin Atzmueller.
4005 * Some math functions have been fixed, and there are new
4006 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4007 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4008 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4009 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4010 likely to be built into sbcl-0.7.0.)
4011 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4012 CL, ported to SBCL by Martin Atzmueller)
4013 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4014 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4015 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4016 * There's a new slam.sh hack to shorten the edit/compile/debug
4017 cycle for low-level changes to SBCL itself, and a new
4018 :SB-AFTER-XC-CORE target feature to control the generation of
4019 the after-xc.core file needed by slam.sh.
4020 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4021 COMPILE-FILE is no longer supported, so that now every function
4022 gets an entry point, so that block compilation looks a little
4023 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4024 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4025 returns the number of bytes consed since the system started,
4026 rather than the number consed since the first time the function
4027 was called. (The new definition parallels ANSI functions like
4028 CL:GET-INTERNAL-RUN-TIME.)
4029 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4030 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4031 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4032 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4033 * Fasl file version numbers are now independent of the target CPU,
4034 since historically most system changes which required version
4035 number changes have affected all CPUs equally. Similarly,
4036 the byte fasl file version is now equal to the ordinary
4039 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4040 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4041 is no longer recognized. I apologize for this, because it was
4042 listed in SB-EXT as a supported extension, but I found that
4043 its existing behavior was poorly specified, as well as incorrectly
4044 specified, and it looked like too much of a mess to straighten it
4045 out. I have enough on my hands trying to get ANSI stuff to work..
4046 * many patches ported from CMU CL by Martin Atzmueller, with
4047 half a dozen bug fixes in pretty-printing and the debugger, and
4048 half a dozen others elsewhere
4049 * fixed bug 13: Floating point infinities are now supported again.
4050 They might still be a little bit flaky, but thanks to bug reports
4051 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4052 as flaky as they were.
4053 * The --noprogrammer command line option is now supported. (Its
4054 behavior is slightly different in detail from what the old man
4055 page claimed it would do, but it's still appropriate under the
4056 same circumstances that the man page talks about.)
4057 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4058 are now supported, and enabled by default. Thus, the compiler can
4059 handle many floating point and complex operations much less
4060 inefficiently. (Thus e.g. you can implement a complex FFT
4062 * The compiler now detects type mismatches between DECLAIM FTYPE
4063 and DEFUN better, and implements CHECK-TYPE more correctly, and
4064 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4065 thanks to patches from Martin Atzmueller.
4066 * various fixes to make the cross-compiler more portable to
4067 ANSI-conforming-but-different cross-compilation hosts (notably
4068 Lispworks for Windows, following bug reports from Arthur Lemmens)
4069 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4070 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4071 fixed thanks to Pierre Mai's CMU CL patches.
4072 * fixes to keep the system from overflowing internal counters when
4073 it tries to use i/o buffers larger than 16M bytes
4074 * fixed bug 45a: Various internal functions required to support
4075 complex special functions have been merged from CMU CL sources.
4076 (When I was first setting up SBCL, I misunderstood a compile-time
4077 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4078 * improved support for type intersection and union, fixing bug 12
4079 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4080 more obscure bugs as well
4081 * some steps toward byte-compiling non-performance-critical
4082 parts of the system, courtesy of patches from Martin Atzmueller
4083 * Christophe Rhodes has made some debian packages of sbcl at
4084 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4085 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4086 stable, but are nonetheless usable. When he's ready, I'd be happy
4087 to add them to the SourceForge "File Releases" section. (And if
4088 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4089 * new fasl file format version number (because of changes in
4090 internal representation of (OR ..) types to accommodate the new
4091 support for (AND ..) types, among other things)
4093 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4094 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4096 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4098 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4099 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4100 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4101 * DESCRIBE now works on structure objects again.
4102 * Most function call argument type mismatches are now handled as
4103 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4104 know whether the function will be redefined before the call is
4105 executed. (The compiler could flag local calls with full WARNINGs,
4106 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4107 it doesn't keep track of enough information to know whether calls
4108 are local in this sense.)
4109 * Compiler output is now more verbose, with messages truncated
4110 later than before. (There should be some supported way for users
4111 to override the default verbosity, but I haven't decided how to
4112 provide it yet, so this behavior is still controlled by the internal
4113 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4114 src/compiler/ir1util.lisp.)
4115 * Fasl file format version numbers have increased again, because
4116 support for the Gray streams extension changes the layout of the
4117 system's STREAM objects.
4118 * The Gray subclassable streams extension now works, thanks to a
4119 patch from Martin Atzmueller.
4120 * The full LOAD-FOREIGN extension (not just the primitive
4121 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4122 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4123 but like most other programs, it defaults to copying the Unix
4124 environment from the original process instead of starting the
4125 new process in an empty environment.
4126 * Extensions which manipulate the Unix environment now support
4127 an :ENVIRONMENT keyword option which doesn't smash case or
4128 do other bad things. The CMU-CL-style :ENV option is retained
4129 for porting convenience.
4130 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4131 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4133 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4135 * A patch from Martin Atzmueller seems to have solved the SIGINT
4136 problem, and as far as we know, signal-handling now works cleanly.
4137 (If you find any new bugs, please report them!)
4138 * The system no longer defaults Lisp source file names to types
4139 ".l", ".cl", or ".lsp", but only to ".lisp".
4140 * The compiler no longer uses special default file extensions for
4141 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4142 seems to expect a single default extension for all compiled code,
4143 and there's no compelling reason to try to stretch the standard
4144 to allow two different extensions.) Instead, byte-compiled files
4145 default to the same extension as native-compiled files.
4146 * Fasl file format version numbers have increased again, because
4147 a rearrangement of internal implementation packages made some
4148 dumped symbols in old fasl files unreadable in new cores.
4149 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4150 many fewer weird special cases.
4151 * Bug #17 (differing COMPILE-FILE behavior between logical and
4152 physical pathnames) has been fixed, and some related misbehavior too,
4153 thanks to a patch from Martin Atzmueller.
4154 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4155 by Tim Moore, ported to SBCL by Martin Atzmueller.
4156 * Martin Atzmueller fixed several filesystem-related problems,
4157 including bug #36, in part by porting CMU CL patches, which were
4158 written in part by Paul Werkowski.
4159 * More compiler warnings in src/runtime/ are gone, thanks to
4160 more patches from Martin Atzmueller.
4161 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4164 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4166 * DESCRIBE now works on CONDITION objects.
4167 * The debugger now handles errors which arise when trying to print
4168 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4170 * The build system now uses an additional file, customize-target-features.lisp,
4171 to allow local modifications to the target *FEATURES* list. (The point of
4172 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4173 debugging features enabled, without having to worry about propagating it
4174 into everyone's system when I do a "cvs update".) When no
4175 customize-target-features.lisp file exists, the target *FEATURES* list
4176 should be constructed the same way as before.
4177 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4178 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4179 warn about behavior which is undefined under the ANSI spec. Note: This
4180 is specified by ANSI, but it's not very popular with programmers.
4181 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4182 macro in the SBCL sources for an example of a workaround which you
4183 might use to make portable ANSI-standard code which does what you want.
4184 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4185 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4186 when it's used as a non-toplevel form. (This is required in order
4187 to implement the DEFCONSTANT-EQX macro.)
4188 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4189 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4190 funny things, due to bugs in the implementation of EVAL-WHEN
4191 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4192 non-toplevel DEFCONSTANTs are uncommon.)
4193 * The core file version number and fasl file version number have been
4194 incremented, because the old noncompliant DEFCONSTANT behavior involved
4195 calling functions which no longer exist, and because I also took the
4196 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4197 * fixed bug 1 (error handling before read-eval-print loop starts), and
4198 redid debugger restarts and related debugger commands somewhat while
4200 ** The QUIT debugger command is gone, since it did something
4201 rather different than the SB-EXT:QUIT command, and since it never
4202 worked properly outside the main toplevel read/eval/print loop.
4203 Invoking the new TOPLEVEL restart provides the same functionality.
4204 ** The GO debugger command is also gone, since you can just invoke
4205 the CONTINUE restart directly instead.
4206 ** The TOP debugger command is also gone, since it's redundant with the
4207 FRAME 0 command, and since it interfered with abbreviations for the
4209 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4211 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4212 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4213 some porting work by Martin Atzmueller)
4214 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4215 with a boatload of patches which he ported to SBCL. Now that those
4217 ** The system tries to make sure that its low-priority messages
4218 are prefixed by semicolons, to help people who like to use
4219 syntax highlighting in their ILISP buffer. (This patch
4220 was originally due to Raymond Toy.)
4221 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4222 patches originally written by Raymond Toy.
4223 ** The compiler understands coercion between single-value and
4224 multiple-VALUES type expressions better, getting rid of some very
4225 weird behavior, thanks to patches originally by Robert MacLachlan
4226 and Douglas Crosher.
4227 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4228 lambda lists, thanks to a patch originally by Pierre Mai.
4229 ** The system no longer bogusly warns about "abbreviated type
4231 ** The compiler gets less confused by inlining and RETURN-FROM,
4232 thanks to some patches originally by Tim Moore.
4233 ** The system no longer hangs when dumping circular lists to fasl
4234 files, thanks to a patch originally from Douglas Crosher.
4235 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4236 undefined function error.
4237 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4238 in structure slot initforms) for now, documented workaround instead:-|
4239 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4240 * fixed bug 5: added stubs for various Gray stream functions called
4241 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4242 installed, at least appropriate type errors are generated
4243 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4244 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4245 consistently in DEFMETHOD forms.
4246 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4247 it doesn't seem to affect SBCL after all
4248 * The C runtime system now builds with better optimization and many
4249 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4251 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4253 * The system is now under CVS at SourceForge (instead of the
4254 CVS repository on my home machine).
4255 * The new signal handling code has been tweaked to treat register
4256 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4257 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4258 downstream, e.g. in debug-int.lisp, has implicit dependencies
4259 on the unsignedness of integer representation of machine words,
4260 and that caused the system to bomb out with infinite regress
4261 when trying to recover from type errors involving signed values,
4262 e.g. (BUTLAST '(1 2 3) -1).)
4263 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4264 (This was one of the bugs Peter Van Eynde reported back in July.)
4265 * The system now uses code inspired by Colin Walters' O(N)
4266 implementation of MAP (from the cmucl-imp@cons.org mailing
4267 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4268 inline the MAP operation, and there is more than one
4269 sequence argument to the MAP call (so that it can't just
4270 do ETYPECASE once and for all based on the type of the
4271 single sequence argument). (The old non-inline implementation
4272 of the general M-argument sequence-of-length-N case required
4273 O(M*N*N) time when any of the sequence arguments were LISTs.)
4274 * The QUIT :UNIX-CODE keyword argument has been renamed to
4275 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4276 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4278 * Raymond Wiker's patches to port dynamic loading from Linux to
4279 FreeBSD have been added.
4280 * The BUGS file is now more nearly up to date, thanks in large part
4281 to Martin Atzmueller's review of it.
4282 * The debugger now flushes standard output streams before it begins
4283 its output ("debugger invoked" and so forth).
4284 * The core version number and fasl file version number have both
4285 been incremented, because of incompatible changes in the layout
4287 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4288 used to not be called for a saved Lisp image.)
4289 * Martin Atzmueller's version of a patch to fix a compiler crash,
4290 as posted on sbcl-devel 13 September 2000, has been installed.
4291 * Instead of installing Martin Atzmueller's patch for the
4292 compiler transform for SUBSEQ, I deleted the compiler transform,
4293 and transforms for some similar consing operations.
4294 * A bug in signal handling which kept TRACE from working on OpenBSD
4296 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4297 away by constant folding
4298 * The system now defines its address space constants in one place
4299 (in the Lisp sources), and propagates them automatically elsewhere
4300 (through GENESIS and the sbcl.h file). Therefore, patching the
4301 address map is less unnecessarily tedious and error-prone. The
4302 Lisp names of address space constants have also been systematized.
4303 * CVS tags like dollar-Header-dollar have been removed from
4304 the sources, because they have never saved me trouble and
4305 they've been source of trouble working with patches and other
4306 diff-related operations.
4307 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4308 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4310 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4312 * The system has been ported to OpenBSD.
4313 * The system now compiles with a simple "sh make.sh" on the systems
4314 that it's supported on. I.e., now you no longer need to tweak
4315 text in the target-features.lisp-expr and symlinks in src/runtime/
4316 by hand, the make.sh takes care of it for you.
4317 * The system is no longer so grossly inefficient when compiling code
4318 involving vectors implemented as general (not simple) vectors (VECTOR T),
4319 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4320 which dares to use the various sequence functions on non-simple
4321 vectors, takes less of a performance hit.
4322 * There is now a primitive type predicate VECTOR-T-P
4323 to test for the (VECTOR T) type, so that e.g.
4324 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4325 can now be compiled with some semblance of efficiency. (The old code
4326 turned the type declaration into a full call to %TYPEP at runtime!)
4327 * AREF on (VECTOR T) is still not fast, since it's still compiled
4328 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4329 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4330 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4331 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4332 without making full calls to SUBTYPEP at runtime.
4333 (Some analogous efficiency issues for non-simple vectors specialized to
4334 element types other than T, or for non-simple multidimensional arrays,
4335 have not been addressed. They could almost certainly be handled the
4336 same way if anyone is motivated to do so.)
4337 * The changes in array handling break binary compatibility, so
4338 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4339 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4340 instead of (VALUES T T).
4341 * By following the instructions that Dan Barlow posted to sbcl-devel
4342 on 2 July 2000, I was able to enable primitive dynamic object
4343 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4344 functionality is not implemented (since it calls ld to resolve
4345 library references automatically, requiring RUN-PROGRAM for its
4346 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4347 try to resolve library references) is now supported.
4348 * The system now flushes the standard output streams when it terminates,
4349 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4350 them at several other probably-convenient times, e.g. in each pass of
4351 the toplevel read-eval-print loop, and after evaluating a form given
4352 as an "--eval" command-line option. (These changes were motivated by a
4353 discussion of stream flushing issues on cmucl-imp in August 2000.)
4354 * The source transform for TYPEP of array types no longer assumes
4355 that an array whose element type is a not-yet-defined type
4356 is implemented as an array of T, but instead punts, so that the
4357 type will be interpreted at runtime.
4358 * There is now some support for cross-compiling in make.sh: each of
4359 the phases of make.sh has its own script. (This should be transparent
4360 to people doing ordinary, non-cross-compile builds.)
4361 * Since my laptop doesn't have hundreds of megabytes of memory like
4362 my desktop machine, I became more motivated to do some items on
4363 my to-do list in order to reduce the size of the system a little:
4364 ** Arrange for various needed-only-at-cold-init things to be
4365 uninterned after cold init. To support this, those things have
4366 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4367 symbols with such names are now uninterned after cold init).
4368 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4369 fasl files for cold load.
4370 ** Remove the old compiler structure pooling code (which used to
4371 be conditional on the target feature :SB-ALLOC) completely.
4372 ** Redo the representation of some data in cold init to be more compact.
4373 (I also looked into supporting byte compiled code at bootstrap time,
4374 which would probably reduce the size of the system a lot, but that
4375 looked too complicated, so I punted for now.)
4376 * The maximum signal nesting depth in the src/runtime/ support code has
4377 been reduced from 4096 to 256. (I don't know any reason for the very
4378 large old value. If the new smaller value turns out to break something,
4379 I'll probably just bump it back up.)
4380 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4382 * Many, many bugs reported by Peter Van Eynde have been added to
4383 the BUGS list; some have even been fixed.
4384 * While enabling dynamic object file loading, I tried to make the
4385 code easier to understand, renaming various functions and variables
4386 with less ambiguous names, and changing some function calling
4387 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4388 * While trying to figure out how to do the OpenBSD port, I tried to
4389 clean up some of the code in src/runtime/. In particular, I dropped
4390 support for non-POSIX signal handling, added various comments,
4391 tweaked the code to reduce the number of compilation warnings, and
4392 renamed some files to increase consistency.
4393 * To support the new automatic configuration functionality in make.sh,
4394 the source file target-features.lisp-expr has been replaced with the
4395 source file base-target-features.lisp-expr and the machine-generated
4396 file local-target-features.lisp-expr.
4397 * fixed a stupid quoting error in make.sh so that using CMU CL
4398 "lisp -batch" as cross-compilation host works again
4400 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4402 * DESCRIBE no longer tries to call itself recursively to describe
4403 bound/fbound values, so that it no longer fails on symbols which are
4404 bound to themselves (like keywords, T, and NIL).
4405 * DESCRIBE now works on generic functions.
4406 * The printer now prints less-screwed-up representations of closures
4407 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4408 * A private symbol is used instead of the :EMPTY keyword previously
4409 used to mark empty slots in hash tables. Thus
4410 (DEFVAR *HT* (MAKE-HASH-TABLE))
4411 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4412 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4413 now does what ANSI says that it should. (You can still get
4414 similar noncompliant behavior if bang on the hash table
4415 implementation with all the symbols you get back from
4416 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4417 This breaks binary compatibility, since tests for equality to
4418 :EMPTY are wired into things like the macroexpansion of
4419 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4421 * There's now a minimal placeholder implementation for CL:STEP,
4422 as required by ANSI.
4423 * An obscure bug in the interaction of the normal compiler, the byte
4424 compiler, inlining, and structure predicates has been patched
4425 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4426 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4428 * Missing ordinary arguments in a macro call are now detected even
4429 when the macro lambda list contains &KEY or &REST.
4430 * The debugger no longer complains about encountering the top of the
4431 stack when you type "FRAME 0" to explicitly instruct it to go to
4432 the top of the stack. And it now prints the frame you request even
4433 if it's the current frame (instead of saying "You are here.").
4434 * As specified by ANSI, the system now always prints keywords
4435 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4437 * The default initial SIZE of HASH-TABLEs is now smaller.
4438 * Type information from CLOS class dispatch is now propagated
4439 into DEFMETHOD bodies, so that e.g.
4440 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4442 is now basically equivalent to
4443 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4444 (DECLARE (TYPE SINGLE-FLOAT X))
4446 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4447 operation, without having to do run-time type dispatch.
4448 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4449 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4450 * Since I don't seem to be making big file reorganizations very often
4451 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4452 is overflowing my ability to conveniently back them up), I've finally
4453 checked the system into CVS. (The CVS repository is on my home system,
4454 not at SourceForge -- putting it on SourceForge might come later.)
4455 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4456 high-level GC-NOTIFY-FOO functions send their output. (There's
4457 still very little control of where low-level verbose GC functions
4458 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4459 less than it used to -- the GC-NOTIFY-FOO functions are now under
4460 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4461 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4462 in only one place in the source code, and propagates it automatically
4463 everywhere that it's needed. Thus e.g. when I bump the version from
4464 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4465 * The C source files now include boilerplate legalese and documentation
4466 at the head of each file (just as the Lisp source files already did).
4467 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4468 to his page will be replaced with a link to his new CLiki service.
4470 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4472 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4473 * The build process now looks for GNU make under the default name "gmake",
4474 instead of "make" as it used to. If GNU make is not available as "gmake"
4475 on your system, you can change this default behavior by setting the
4476 GNUMAKE environment variable.
4477 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4478 can build without error under CMU CL.
4480 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4482 * There is now a partial SBCL user manual (with some new text and some
4483 text cribbed from the CMU CL manual).
4484 * The beginnings of a profiler have been added (starting with the
4485 CMU CL profiler and simplifying and cleaning up). Eventually the
4486 main interface should be through the TRACE macro, but for now,
4487 it's still accessed through vaguely CMU-CL-style functions and macros
4488 exported from the package SB-PROFILE.
4489 * Some problems left over from porting CMU CL to the new
4490 cross-compilation bootstrap process have been cleaned up:
4491 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4492 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4493 part when getting rid of the compiler *BACKEND* stuff.)
4494 ** The value of *NULL-TYPE* was screwed up, because it was
4495 being initialized before the type system knew the final
4496 definition of the 'NULL type. This screwed up several key
4497 optimizations in the compiler, causing inefficiency in all sorts
4498 of places. (I found it because I wanted to understand why
4499 GET-INTERNAL-RUN-TIME was consing.)
4500 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4501 PROCLAIM FTYPE information. Unfortunately this broke binary
4502 compatibility again, since now the forms output by DEFGENERIC
4503 to refer to functions which didn't exist in 0.6.3.
4504 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4505 can use the new (as of 0.6.3) transform for SOME into MAP into
4507 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4508 values to (INTEGER 0 1000000), so that the time code will no longer
4509 occasionally get blown up by Linux returning 1000000 microseconds
4510 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4511 its output conform to the ANSI spec. (Alas, this makes its output
4512 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4513 * A full call to MAP NIL with a single sequence argument no longer conses.
4514 * fixes to problems pointed out by Martin Atzmueller:
4515 * The manual page no longer talks about multiprocessing as though
4516 it were currently supported.
4517 * The ILISP support patches have been removed from the distribution,
4518 because as of version 5.10.1, ILISP now supports SBCL without us
4519 having to maintain patches.
4520 * added a modified version of Raymond Toy's recent CMU CL patch for
4521 EQUALP comparison of HASH-TABLE
4523 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4525 * The system still can't cross-compile itself with
4526 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4527 entails), but at least it can compile more of itself that way
4528 than it used to be able to, and various buglets which were uncovered
4529 by trying to cross-compile itself that way have now been fixed.
4530 * This release breaks binary compatibility again. This time
4531 at least I've incremented the FASL file format version to 2, so that the
4532 problem can be detected reliably instead of just causing weird errors.
4533 * various new style warnings:
4534 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4535 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4536 ** using the lexical binding of a variable named in the *FOO* style
4537 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4538 as specified by ANSI.
4539 * *RANDOM-STATE* is no longer automatically initialized from
4540 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4541 default behavior of the system is to repeat its behavior every time
4542 it's run. If you'd like to change this behavior, you can always
4543 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4544 old convention there was no comparably easy way to get the system to
4545 repeat its behavior every time it was run.
4546 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4547 FTYPE declarations has been removed, in favor of their ANSI
4548 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4549 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4550 the types of their sequence arguments can be determined at compile time.
4551 This is done through a new open code expansion for MAP which eliminates
4552 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4553 argument types can be determined at compile time.
4554 * The optimizer now transforms COERCE into an identity operation when it
4555 can prove that the coerced object is already of the correct type. (This
4556 can be a win for machine generated code, including the output of other
4557 optimization transforms, such as the MAP transform above.)
4558 * Credit information has been moved from source file headers into CREDITS.
4559 * Source file headers have been made more standard.
4560 * The CASE macro now compiles without complaining even when it has
4563 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4565 * (Note that the way that the PCL macroexpansions were rewritten
4566 to accommodate the change in DEFGENERIC below breaks binary
4567 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4568 not run under sbcl-0.6.2. Once we get out of alpha releases,
4569 i.e. hit release 1.0.0, we'll probably try to maintain binary
4570 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4571 and sbcl-1.4.4. Until then, however, it might be fairly common
4572 for maintenance releases to break binary compatibility.)
4573 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4575 * The reporting of unhandled signals has been changed to print some
4576 explanatory text as well as the report form. (Previously only
4577 the report form was printed.)
4578 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4579 it defines, so that the compiler no longer issues undefined function
4580 warnings for compiled-but-not-yet-loaded generic functions.
4581 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4582 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4583 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4584 section of the ANSI spec are supported.
4585 * The "" nickname for the "KEYWORD" package has been removed.
4586 The reader still handles symbol tokens which begin with a package marker
4587 as keywords, but it doesn't expose its mechanism for doing so in the
4588 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4589 * The system now issues STYLE-WARNINGs for contradictory TYPE
4590 proclamations. (Warnings for contradictory FTYPE proclamations would
4591 be nice too, but those can't be done usefully unless the type system
4592 is made smarter about FUNCTION types.)
4593 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4594 systematized, so that "*target-*.lisp is supposed to exist only on the
4595 target and imply that there's a related file which exists on the
4596 host, and *host-*.lisp is supposed to exist only on the host and imply
4597 that there's a related file which exists on the target. This involves a
4598 lot of renaming. Hopefully the acute confusion caused by the renaming
4599 will be justified by the reduction in chronic confusion..
4600 ** runtime-type.lisp -> early-target-type.lisp
4601 ** target-type.lisp -> late-target-type.lisp
4602 ** early-host-format.lisp -> early-format.lisp
4603 ** late-host-format.lisp -> late-format.lisp
4604 ** host-error.lisp -> misc-error.lisp
4605 ** early-error.lisp -> early-target-error.lisp
4606 ** late-error.lisp -> late-target-error.lisp
4607 ** host-defboot.lisp -> early-defboot.lisp
4608 ** code/misc.lisp -> code/target-misc.lisp
4609 ** code/host-misc.lisp -> code/misc.lisp
4610 ** code/numbers.lisp -> code/target-numbers.lisp
4611 ** code/early-numbers.lisp -> numbers.lisp
4612 ** early-host-type.lisp -> early-type.lisp
4613 ** late-host-type.lisp -> late-type.lisp
4614 ** host-typep.lisp -> typep.lisp
4615 ** load.lisp -> target-load.lisp
4616 ** host-load.lisp -> load.lisp
4617 ** host-disassem.lisp -> disassem.lisp
4618 ** host-insts.lisp -> insts.lisp
4619 ** byte-comp.lisp -> target-byte-comp.lisp
4620 ** host-byte-comp.lisp -> byte-comp.lisp
4621 ** host-signal.lisp -> signal.lisp
4622 ** host-defstruct.lisp -> defstruct.lisp
4623 ** late-target-type.lisp -> deftypes-for-target.lisp
4624 Furthermore, several other previously target-only files foo.lisp (e.g.
4625 hash-table.lisp and random.lisp) have been split into a target-and-host
4626 foo.lisp file and a target-only target-foo.lisp file, with their key type
4627 definitions in the target-and-host part, so that the cross-compiler will
4628 know more about target types.
4629 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4630 gone away. In their place are various *BACKEND-FOO* variables
4631 corresponding to the slots of the old structure.
4632 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4633 into the target SBCL has been fixed.
4634 * The chill.lisp system for loading cold code into a running SBCL
4636 * Support for the CMU CL "scavenger hook" extension has been removed.
4637 (It was undocumented and unused in the CMU CL sources that SBCL was
4638 derived from, and stale in sbcl-0.6.1.)
4639 * Various errors in the cross-compiler type system were detected
4640 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4641 (enabling various consistency checks). Many of them were fixed,
4642 but some hard problems remain, so the compiler is back to
4643 running without *TYPE-SYSTEM-INITIALIZED* for now.
4644 * As part of the cross-compiler type system cleanup, I implemented
4645 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4646 * I have started adding UNCROSS calls throughout the type system
4647 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4648 on cross-compiler input files will be able to go away, and various
4650 * CONSTANTP now returns true for quoted forms (as explicitly required
4653 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4655 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4656 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4657 (MAKE-LIST -1). In the longer term, it ought to become true
4658 that declarations are assertions even at SAFETY 1. For now, it's not
4659 quite true even at SAFETY 3, but it's at least more nearly true..
4660 (Note that this change seems to increases the size of the system by
4661 O(5%) and to decrease the speed of the compiler by 20% or more.)
4662 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4663 for the problem of printing dozens of lines of distracting information
4664 about low-level system machinery as part of the top stack frame
4665 on entry to the debugger when an undefined function was called.
4666 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4667 is not reset to COMMON-LISP-USER.
4668 * Compilation of stuff related to dyncount.lisp has been made conditional
4669 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4670 smaller. The various dyncount-related symbols have been moved into
4671 a new "SB-DYNCOUNT" package.
4672 * tty-inspect.lisp has been renamed to inspect.lisp.
4673 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4674 feature has gone away. (When we eventually port to other flavors of
4675 libc and/or Unix, we'll try to make the differences between flavors
4676 invisible at the user level.)
4677 * Various other *FEATURES* tags, and/or their associated conditionals,
4678 have been removed if obsolescent, or given better documentation, or
4679 sometimes given more-mnemonic names.
4681 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4683 * tidied up "make.sh" script
4684 * tidied up system directory structure
4685 * better "clean.sh" behavior
4686 * added doc/FOR-CMUCL-DEVELOPERS
4687 * many many small tweaks to output format, e.g. removing possibly-confusing
4688 trailing #\. character in DESCRIBE-INSTANCE
4689 * (EQUALP #\A 'A) no longer signals an error.
4690 * new hashing code, including EQUALP hashing
4691 * tidied up Lisp initialization and toplevel
4692 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4693 * command line argument processing
4694 * added POSIX-GETENV function to deal with Unix-ish environment variables
4695 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4696 terminating SBCL on EOF
4697 * non-verbose GC by default
4698 * There is no more "sbcl" shell script; the sbcl file is now the C
4699 runtime executable (just like CMU CL).
4700 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4702 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4703 symbol and package information as Lisp native symbol and package objects
4704 instead of strings naming symbols and strings naming packages. This way,
4705 whenever packages are renamed (as in warm init), debug information is
4706 transformed along with everything else.
4707 * tweaked the optimization policy declarations which control the building
4708 of SBCL itself. Now, among other things, the system no longer saves
4709 source location debugging information. (This helps two problems at once
4710 by reducing SBCL size and by keeping SBCL from trying to look for its
4711 sources -- which may not exist -- when reporting errors.)
4712 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4713 debugging and testing purposes
4714 * cleaned up printing, making the printer call PRINT-OBJECT for
4715 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4716 methods, giving nearly-ANSI behavior
4717 * converted almost all special variables to use *FOO* naming convention
4718 * deleted PARSE-TIME functionality, since it can be done portably
4719 * moved some files out of cold init into warm init
4720 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4722 * regularized formatting of source files
4723 * added an install.sh script
4724 * fixed ridiculous memory usage of cross-compiler by making
4725 compiler/alloc.lisp not try to do pooling unless it can hook
4726 itself into the GC of the cross-compilation host. Now the system
4727 builds nicely on my old laptop.
4728 * added :SB-ALLOC in target-features.lisp-expr
4729 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4730 was not implemented)
4731 * re-did condition handling and note reporting in the compiler. Notes
4732 are no longer handled by signalling conditions. Style warnings
4733 and warnings are handled more correctly and reported in such a way
4734 that it's easy to find one or the other in your output (so that you
4735 can e.g. figure out which of many problems caused COMPILE-FILE to
4737 * changed the severity of several compiler warnings from full WARNING
4738 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4739 compiler note reporting so that it doesn't use the condition system
4740 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4741 COMPILE-FILE command)
4742 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4743 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4744 no longer supported, since their implementation was deeply intertwingled
4745 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4746 * removed bogus "support" for compiler macros named (SETF FOO), and
4747 removed the compiler macro for SETF INFO (but only after making a fool
4748 of myself on the cmucl-imp mailing list by posting a bogus patch for
4749 DEFINE-COMPILER-MACRO..)
4750 * Compiled files containing forms which have side effects on the Lisp
4751 reader (such as DEFPACKAGE forms) are now handled more correctly.
4752 (Compiler queuing of top level lambdas has been suppressed by setting
4753 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4754 * deleted various currently-unused source files, e.g. gengc.lisp. They
4755 may be added back at some point e.g. when porting to other architectures,
4756 but until they are it's distracting to distribute them and to try to
4758 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4759 there were so many of them they're just distractions, and UNCROSS is
4760 known to be able to handle the current sources
4761 * moved PROFILE functionality into TRACE, so that it will be clear
4762 how the wrapping and unwrapping of functions when you profile them
4763 interacts with the wrapping and unwrapping of functions when you
4764 trace them. (Actually, the functionality isn't there yet, but at least
4765 the interface specification is there. Hopefully, the functionality will
4766 arrive with some future maintenance release.)
4767 * removed host-oops.lisp
4768 * changed signature of QUIT function to allow UNIX-CODE argument
4769 * fixed READ-SEQUENCE bug
4770 * tweaked verbose GC output so that it looks more like the progress
4771 output that ANSI specifies for functions like LOAD
4772 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4773 * added <http://sbcl.sourceforge.com> to the banner information printed by