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
7 changes in sbcl-1.0.19 relative to 1.0.18:
8 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
9 warnings that go otherwise unhandled will be muffled if they are
10 of the type that's the value of this variable.
11 * optimization: stack allocation is slightly more efficient on x86
13 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
14 where a raw slot always is initialized using the initform whose
15 type is not know sufficiently well a compile-time are now compiled
16 correctly. (reported by John Morrison)
17 * bug fix: compiler no longer makes erronous assumptions in the
18 presense of non-foldable SATISFIES types.
19 * bug fix: stack analysis missed cleanups of dynamic-extent
20 arguments in non-let-converted calls to local functions.
21 * improvements to the Windows port:
22 ** adjusted address spaces for building on both Win32 and
23 Win64. (thanks for John Connors)
24 * fixed some bugs revealed by Paul Dietz' test suite:
25 ** interval arithmetic during type derivation used inexact integer
26 to single-float coercions.
27 ** arithmetic operations involving large integers and single
28 floats give the same results in compiled and interpreted code.
29 ** deriving the result type of COERCE no longer signals an error
30 if the derived type of the second argument is a MEMBER type
31 containing invalid type specifiers.
32 ** ADJOIN with constant NIL as second argument works correctly.
33 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
35 changes in sbcl-1.0.18 relative to 1.0.17:
36 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
37 profiles only the current thread.
38 * minor incompatible change: changes to SYMBOL-VALUE of constants
39 defined with DEFCONSTANT now signal an error.
40 * enhancement: SB-SPROF now has support for wallclock profiling,
41 and is also able to profile specific threads. REPORT output
42 has also additional sorting options.
43 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
45 * optimization: structure allocation has been improved
46 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
47 ** out of line constructors are ~10% faster.
48 ** inline constructors are ~15% faster.
49 ** inline constructors are capable of dynamic extent allocation
50 (generally on x86 and x86-64, in some cases on other platforms
52 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
54 * optimization: file compiler is now able to coalesce non-circular
55 lists, non-base strings, and bit-vectors. Additionally, constants
56 are never referenced through SYMBOL-VALUE at runtime.
57 * optimization: code defining methods on PRINT-OBJECT (and other
58 generic functions in the COMMON-LISP package) now loads faster.
59 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
61 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
62 fasl is now deleted. (reported by Attila Lendvai)
63 * bug fix: READ-LINE always returned NIL for the last line in files.
64 (reported by Yoshinori Tahara)
65 * bug fix: more accurate disassembly annotations of foreign function
66 calls. (thanks to Andy Hefner)
67 * bug fix: trimming non-simple strings and non-string string
68 designators when the there is nothing to trim works properly.
69 (thanks to James Knight)
70 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
71 (thanks to Travis Cross)
72 * fixed some bugs revealed by Paul Dietz' test suite:
73 ** NIL is a valid function name (regression at 1.0.13.38)
74 ** FILL on lists was missing its return value (regression at 1.0.12.27)
75 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
76 fill pointers properly (regression at 1.0.12.23)
77 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
78 displacement indices properly (regression at 1.0.12.23)
80 changes in sbcl-1.0.17 relative to 1.0.16:
81 * temporary regression: user code can no longer allocate closure
82 variable storage on stack, due to bug 419 without explicitly
83 requesting it. Please consult sbcl-devel for advice if you need to
84 use this feature in the meanwhile.
85 * new feature: runtime argument --control-stack-size can be used to
86 adjust thread default control stack size.
87 * enhancement: improved TIME output
88 ** all times are reported using the measured accuracy (milliseconds
89 for real and GC times, microseconds for everything else.)
90 ** processor cycle counts on x86 and x86-64.
91 ** interpreted forms are counted for both evaluator modes.
92 ** number of lambdas converted by the compiler is reported.
93 ** CPU percentage report (computed from real and total run time.)
94 ** more comprehensive run time reporting, using a condenced format
95 ** interperted form, lambda, and page fault counts are omitted
97 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
99 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
100 * optimization: two argument forms of LAST are upto ~10% faster
101 in normal SPEED policies.
102 * optimization: NCONC no longer needs to heap cons its &REST list
103 in normal SPEED policies.
104 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
106 * bug fix: UNION and NUNION work with :TEST-NOT once more,
107 regression since 1.0.9.1. (thanks to Eric Marsden)
108 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
109 since 1.0.15.36. (thanks to Paul Khuong)
110 * bug fix: LAST when always returned the whole list when given a bignum
111 as the second argument.
112 * bug fix: dynamic extent allocation of nested lists and vectors
113 could leak to otherwise accessible parts.
114 * bug fix: invalid optimization of heap-allocated alien variable
116 * bug fix: fasl header checking is less vulnerable to different
117 platform word lengths.
118 * bug fix: more correct assembler syntax for GNU binutils
119 2.18.50.0.4 support. (thanks to Marijn Schouten)
120 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
122 * bug fix: the fopcompiler can handle LOCALLY forms (with no
123 declarations) successfully. (reported by Attila Lendvai)
125 changes in sbcl-1.0.16 relative to 1.0.15:
126 * minor incompatible change: revert the changes to sb-posix's error
127 signaling added in 1.0.14.
128 * minor incompatible change: change PROBE-FILE back to returning
129 NIL whenever we can't get a truename, as was the case before 1.0.14.
130 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
131 inherits from ERROR instead of just CONDITION.
132 * new feature: SB-INTROSPECT can provide source locations for instances
133 as well. (thanks to Tobian Ritterweiler)
134 * optimization: binding special variables now generates smaller code
135 on threaded platforms.
136 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
137 and cases where no :TEST is given but the compiler can infer that
138 the element to search is of type (OR FIXNUM (NOT NUMBER)).
139 * optimization: better LOGNOT on fixnums.
140 * optimization: modular arithmetic for a particular requested width
141 is implemented using a tagged representation unless a better
142 representation is available.
143 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
144 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
145 for wellformedness and returns a specialized vector. (reported by
146 Francois-Rene Rideau)
147 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
148 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
149 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
150 unscheduling timer at the same time as another timer fires.
151 * bug fix: don't reschedule timers for dead threads.
152 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
153 * bug fix: copying output from RUN-PROGRAM to a stream signalled
154 bogus errors if select() was interrupted.
155 * enhancement: add support for fcntl's struct flock to SB-POSIX.
157 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
158 * enhancement: cleaner backtraces for interactive interrupts, as
159 well as other cases where the interesting frames used to be
160 obscured by interrupt handling frames.
161 * enhancement: untracing a whole package using (UNTRACE "FOO") is
162 now supported, and tracing a whole package using (TRACE "FOO") now
163 traces SETF-functions as well.
164 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
165 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
166 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
167 * unreadably printed representation of hash-tables now includes
169 * bug fix: partially fixed #188: type propagation from assignments
170 is now more efficient.
171 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
172 'DOUBLE-FLOAT) are not flushable.
173 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
174 full address of the object, and none of the tag bits.
175 * bug fix: readably printing hash-tables now respects other printer
176 control variables. (reported by Cedric St-Jean)
177 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
178 keyword with MAKE-HASH-TABLE.
179 * bug fix: export SB-POSIX:MKSTEMP.
180 * bug fix: SORT was not interrupt safe.
181 * bug fix: XREF accounts for the last node of each basic-block as
183 * bug fix: MAKE-INSTANCE optimizations interacted badly with
184 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
185 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
186 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
187 create obsolete instances in the case of redefinition or
188 obsoletion of a superclass. (thanks to Andy Hefner)
189 * bug fix: Support for the Alpha architecture has been revived; it had
190 suffered somewhat from lack of maintenance since sbcl-1.0.
191 * improvements to the Windows port:
192 ** The system detects the codepage to use at startup, instead of
193 using the value from the saved core. (thanks to Kei Suzuki)
195 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
196 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
197 (see documentation for details.)
198 * revived support for OpenBSD (contributed by Josh Elsasser)
199 * partially fixed bug #108: ROOM no longer suffers from occasional
200 (AVER (SAP= CURRENT END)) failures.
201 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
202 bodies no longer cause a WARNING to be signalled. (reported by
204 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
205 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
206 the bug in TRUNCATE.) (reported by Michael Weber)
207 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
208 no samples. (reported by Andy Hefner)
209 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
210 no longer appear as (NIL ...) frames in backtraces.
211 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
212 is now actually exported from SB-EXT as documented. (reported by
214 * bug fix: sb-aclrepl now correctly understands how to inspect
215 single-floats on 64-bit platforms where single-floats are not boxed.
216 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
217 yet been finalized. (reported by Levente Meszaros)
218 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
219 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
220 SBCL-specific optimize qualities.
222 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
223 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
224 an executable in the search path, and does so in the child
225 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
226 been removed; it can be found in the CVS history, for somebody who
227 needs that search behavior (see the manual).
228 * minor incompatible change: compiler policy re. weakening type
229 checks has changed: now type checks are weakened only if SAFETY < 2
231 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
232 unparsing of directory pathnames as files. Analogously,
233 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
234 filename to parse into a directory pathname.
235 * enhancement: implicit generic function creation now signals a
236 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
237 users can bind handlers for and muffle around calls to LOAD.
238 * enhancement: RUN-PROGRAM allows unicode arguments and environments
239 to be used (using the default stream external format), and allows
240 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
241 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
242 strings and vectors whose element-type or simplicity is not fully
243 known at compile-time.
244 * optimization: STRING-TRIM and related functions no longer allocate
245 a new string when no trimming needs to be performed. These functions
246 are also faster than before when the input string has been declared
248 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
249 * optimization: READ-LINE is significantly faster for files containing
251 * optimization: non-open coded uses of character comparison operators
252 (e.g. char=) no longer cons when called with more than one parameter
253 on platforms supporting dynamic-extent allocation.
254 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
255 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
256 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
258 * bug fix: some sequence functions elided bounds checking when
260 * bug fix: too liberal weakening of union-type checks when SPEED >
262 * bug fix: more bogus fixnum declarations in ROOM implementation
265 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
266 * new feature: MAKE-HASH-TABLE now experimentally accepts a
267 :SYNCHRONIZED argument, which makes the hash-table safe for
268 concurrent accesses (but not iteration.) See also:
269 SB-EXT:WITH-LOCKED-HASH-TABLE, and
270 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
271 * optimization: CONCATENATE on strings is an order of magnitude faster
272 in code compiled with (> SPEED SPACE).
273 * optimization: SUBSEQ is ~50% faster on lists.
274 * bug fix: bug 417 fixed -- source location reporting is now more robust.
275 * bug fix: SUBSEQ on a list will now correctly signal an error if if
276 END is smaller then START.
277 * bug fix: SB-PROFILE will no longer report extra consing for nested
278 calls to profiled functions.
279 * bug fix: ROOM implementation had bogus fixnum declarations which
280 could cause type-errors when calling ROOM on large images.
281 * bug fix: if file compilation is aborted, the partial fasl is now
282 deleted, and COMPILE-FILE returns NIL as the primary value.
283 * bug fix: number of thread safety issues relating to SBCL's internal
284 hash-table usage have been fixed.
285 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
286 be returned from its body when the values were being returned
287 using unknown-values return convection and the W-P-O was wrapped
288 inside an UNWIND-PROTECT.
289 * bug fix: sb-posix should now compile again under Windows, enabling
292 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
293 * incompatible change: hash-table accessor functions are no longer
294 automatically protected by locks. Concurrent accesses on the same hash-table
295 from multiple threads can give inconsistent results or even corrupt the
296 hash-table completely. Multi-threaded applications should do their own
297 locking at the correct granularity. In the current implementation it is
298 still safe to have multiple readers access the same table, but it's not
299 guaranteed that this property will be maintained in future releases.
300 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
301 and will signal an error at runtime.
302 * enhancement: SB-THREAD package now exports a semaphore interface.
303 * enhancement: CONS can now stack-allocate on x86 and
304 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
306 * enhancement: nested lists can now be stack allocated on
307 platforms providing stack allocation support.
308 * enhancement: dynamic-extent support has been extended to support
309 cases where there are multiple possible sources for the stack
311 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
312 if the mutex is uncontested on Linux.
313 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
314 as specified by the CLHS. (thanks to Tobias Rittweiler)
315 * bug fix: NaN comparison now works on x86-64.
316 * bug fix: CLOSE :ABORT T on a stream with pending output now
318 * bug fix: instances of non-standard metaclasses using standard
319 instance structure protocol sometimes missed the slot type checks
321 * bug fix: known functions can be inlined in high-debug code.
323 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
324 * minor incompatible change: the MSI installer on Windows no longer
325 associates .lisp and .fasl files with the installed SBCL.
326 * minor incompatible change: :UNIX is no longer present in *FEATURES*
327 on Windows. (thanks to Luis Oliviera)
328 * new feature: SB-CLTL2 contrib module now implements
329 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
330 * optimization: scavenging weak pointers is now more efficient,
331 requiring O(1) instead of O(N) per weak pointer to identify
332 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
333 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
334 method bodies using constant slot-names when the first argument is
335 a specializer parameter for the method.
336 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
337 names, when the class of the instance is a direct instance
338 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
339 as slow as the constant slot-name case.)
340 * optimization: member type construction is now O(N) instead
342 * optimization: UNION and NUNION are now O(N+M) for large
343 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
345 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
346 now more readable in environments like Slime which display it.
347 (thanks to Tobias C. Rittweiler)
348 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
349 was able to infer the correct argument type for the object on which
350 the CAS operation was being performed.
351 * bug fix: copy propagation interfered with parallel assignment
352 semantics in local calls. (reported by Paul Khuong)
353 * bug fix: the signed modular fixnum shift compiled to wrong code on
354 x86 and x86-64. (spotted by a slight modification to some of
357 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
358 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
359 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
360 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
362 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
363 and generic function now print the object identity for anonymous
364 instances. (thanks to Attila Lendvai)
365 * enhancement: as an extension to MOP, SBCL now supports SETF of
366 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
367 (thanks to Attila Lendvai)
368 * enhancement: sb-cover has an alternate annotation mode which puts
369 the form annotations at the car of the form, instead of annotating
370 it completely. The benefit of this mode is that it shows better
371 which forms were instrumented by the compiler.
372 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
373 by printer control variables. (reported by Dan Corkill)
374 * bug fix: system leaked memory when delayed output was performed by
375 the OS in smaller chunks then expected. (thanks to David Smith)
376 * bug fix: system leaked memory when file streams were not closed
378 * bug fix: large objects written to slow streams that were modified
379 after the write could end up with the modified state written to
380 the underlying file descriptor.
381 * bug fix: multiple threads operating in parallel on the same stream
382 could cause buffer-overflows.
383 * bug fix: source location information is stored correctly
384 (broken since 1.0.6). This bug would generally show up as the
385 Slime debugger highlighting the wrong form when the sldb-show-source
387 * bug fix: Branch forms are again annotated as branches in the sb-cover
389 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
390 on x86-64. (reported by Gregory Vanuxem)
391 * bug fix: EQUALP could return wrong results for structures with raw
392 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
393 word). (reported by Vjacheslav Fyodorov)
394 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
397 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
398 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
399 atomic compare-and-swap operations on threaded platforms.
400 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
401 allows assigning a global minimum value to optimization qualities
402 (overriding proclamations and declarations).
403 * enhancement: closed over variables can be stack-allocated on x86
405 * performance bug fix: GETHASH and (SETF GETHASH) are once again
407 * optimization: slot definition lookup is now O(1). This speeds up
408 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
409 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
410 * optimization: ASSOC and MEMBER can now be open-coded for all
411 combinations of keyword arguments when second argument is constant
412 and SPEED >= SPACE. In other cases a specialized version is
414 * bug fix: using obsoleted structure instances with TYPEP and
415 generic functions now signals a sensible error.
416 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
417 (reported by Kristoffer Kvello)
418 * bug fix: backtrace construction is now more careful when making
419 lisp-objects from pointers on the stack, to avoid creating bogus
420 objects that can be seen by the GC.
421 * bug fix: defaulting of values in contexts expecting more than 7
422 variables now works on x86-64. (reported by Christopher Laux)
423 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
425 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
426 as the property-list of a symbol.
427 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
428 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
429 situations requested, are once again file-compileable. (reported
432 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
433 * MOP improvement: support for user-defined subclasses of
434 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
435 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
436 the expansion of DEFMETHOD, is responsible for generating a form
437 which creates a list of specializers when evaluated. Additional
438 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
439 debugging and introspective support.
440 * minor incompatible change: the (unsupported) spinlock interface
441 has changed: free spinlock now has the value NIL, and a held spinlock
442 has the owning thread as its value.
443 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
444 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
446 * enhancement: name of a socket-stream is now "a socket" instead of
448 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
449 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
450 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
451 for generic functions. (Thanks to Tobias C. Rittweiler)
452 * optimization: bignum printing speed has been improved by 20-40%
453 (depending on the bignum size.)
454 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
456 * bug fix: the cache used by the CLOS to store precomputed effective
457 methods, slot offsets, and constant return values is now thread and
459 * bug fix: generic function dispatch function updating is now thread
460 and interrupt safe (in the sense that the known issues have been
462 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
463 * bug fix: interning EQL-specializers is now thread and interrupt safe.
464 * bug fix: asdf systems with dependencies to the SB-POSIX or
465 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
466 * bug fix: interrupt safety of applicable method computation has been
469 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
470 * new contrib: sb-cover, an experimental code coverage tool, is included
472 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
473 significantly faster.
474 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
475 produce more efficient code on x86-64 if the compiler can determine
476 that (+ INDEX <constant>) does not require a bounds check and FOO
477 has an element type at least 8 bits wide.
478 * enhancement: a new, experimental synchronous timeout facility is
479 provided. Refer to SB-SYS:WITH-DEADLINE for details.
480 * enhancement: when a symbol name conflict error arises, the
481 conflicting symbols are always printed with a package prefix.
482 (thanks to Kevin Reid)
483 * enhancement: stepping is now once again supported on the SPARC and
484 MIPS platforms. (It is also now more likely to work on CheneyGC
486 * enhancement: sb-sprof can now also track and report accurate call
488 * bug fixes: the treatment of non-standard subclasses of
489 SB-MOP:SPECIALIZER is more correct.
490 * incompatible change: PURIFY no longer copies the data from the
491 dynamic space into the static and read-only spaces on platforms
492 that use the generational garbage collector
493 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
495 * bug fix: GC race condition occasionally resulting in crashes with
496 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
498 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
500 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
501 a STYLE-WARNING to be signalled (regression from 1.0.4.)
502 * bug fix: an asynchronous interrupt could previously leave the
503 system running with GC inhibited.
504 * bug fix: a DECLARE form evaluated at top-level now causes an error
505 rather than silently (or verbosely) returning NIL.
506 * bug fix: trying to dissassemble functions compiled at high DEBUG could
507 result in a error being signalled due to source form lookup errors.
508 (reported by Peter Graves)
510 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
511 * incompatible change: removed writer methods for host-ent-name,
512 host-ent-addresses -- changing the values did not update the DNS
514 * minor incompatible change: changed experimental JOIN-THREAD interface
515 * documentation: the manual now lists reader and writer methods
516 in class slot documentation sections. (thanks to Richard M Kreuter)
517 * documentation: unwinding from asyncronous events has been
518 documented as unsafe.
519 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
520 in multithreaded application code.
521 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
522 platforms. (thanks to James Anderson for the optimization hint)
523 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
525 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
526 variants no longer cons.
527 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
528 their NOT- variants no longer cons.
529 * optimization: EQUAL hash tables no longer use SXHASH for objects
530 of all data types, but instead use an EQL hash for types for which
531 EQUAL is the same as EQL.
532 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
533 are significantly faster.
534 * optimization: new STRING-OUTPUT-STREAM implementation is much
535 faster for large outputs and conses 30% less on average.
536 * enhancement: XREF information is now collected for references made
537 to global variables using SYMBOL-VALUE and a constant argument.
538 * enhancement: SIGINT now causes a specific condition
539 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
540 * bug fix: FILE-POSITION used to signal an error in some cases where
541 ANSI requires it to return NIL.
542 * bug fix: ADJUST-ARRAY is now interrupt-safe.
543 * bug fix: adding and removing fd-handlers is now interrupt-safe.
544 * bug fix: inlined calls to C now ensure 16byte stack alignment on
546 * bug fix: bad type declaration in the CLOS implementation has
547 been fixed. (reported by James Anderson)
548 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
549 (thanks to Lutz Euler)
550 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
551 required by the CLHS. (reported by Samium Gromoff)
552 * bug fix: dead unbound variable references now signal an error.
553 (reported by Marco Monteiro)
554 * bug fix: / with an unused value was being deleted in safe code.
555 (thanks to Marco Monteiro and Kevin Reid)
556 * bug fix: number of characters that can be written onto a single
557 line in a file is unlimited.
558 * bug fix: some GC deadlocks caused by asynchronous interrupts have
559 been fixed by inhibiting interrupts for when GC is disabled.
560 * bug fix: some interrupt safety issues with GETHASH, (SETF
561 GETHASH), CLRHASH and REMHASH have been fixed.
562 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
563 specifier no longer causes infinite recursion.
564 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
565 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
566 * bug fix: an &environment argument with the correct variable information
567 is passed to macros that are expanded during byte compilation.
568 (reported by Samium Gromoff)
569 * bug fix: a logic error was causing the hash function for bignums to
570 have excessive amounts of collisions. (reported by Faré Rideau)
571 * bug fix: modifying the contents of an array could change the return
572 value of SXHASH on that array, which is only allowed for strings
573 and bit vectors. (bug introduced in 0.9.16)
574 * improvement: the x86-64/darwin port now passes all tests (except
575 for the debugger tests) but should still be considered
576 experimental until this is fixed.
577 * improvement: a style-warning is signaled for CASE (etc) clauses with
578 duplicate keys. (thanks to Kevin Reid)
579 * improvement: macos/x86 and macos/x86-64 now use mach exception
580 handlers for dealing with illegal instructions (for trapping and
581 error handling) and memory protection violations (for GC).
583 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
584 * new platform: experimental support for x86-64/darwin (MacOS).
585 * incompatible change: the thread-safe (on most platforms) getaddrinfo
586 and getnameinfo sockets functions are used instead of gethostbyaddr
587 and gethostbyname, on platforms where the newer functions are available.
588 As a result, the ALIASES field of HOST-ENT will always be NIL on these
590 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
591 don't print the startup banner, but behave as if --noinform was passed
592 as a command line argument. (thanks to Kevin Reid)
593 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
594 * optimization: code using alien values with undeclared types is much faster.
595 * optimization: the compiler is now able to open code SEARCH in more cases.
596 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
597 * bug fix: using standardized COMMON-LISP special variables as loop
598 variables no longer signals bogus package lock violations. (reported
600 * bug fix: declaring local loop variables to be of a range-limited type
601 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
602 (reported by Andras Simon)
603 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
604 bugs remain on x86-64.)
605 * bug fix: the #= and ## reader macros now interact reasonably with
606 funcallable instances.
607 * bug fix: type-checks for function arguments were compiled using the
608 compiler policy settings of the wrong lexical environment (in 1.0.2
610 * bug fix: SHADOW accepts characters as string designators, as required
611 by the spec (thanks to Eric Marsden)
612 * bug fix: fixed GC safety issues when foreign functions are called with
613 non-base strings as arguments
614 * bug fix: more consistent error output for fatal-compiler-warnings, like
616 * bug fix: functions with proper names were showing up as NIL in
617 backtraces (reported by Edi Weitz, regression in 1.0.2)
619 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
620 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
621 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
622 produce more efficient code on the x86 if the compiler can determine
623 that (+ INDEX <constant>) does not require a bounds check and FOO
624 has an element type at least 8 bits wide.
625 * bug fix: references to undefined variables are handled the same way
626 in toplevel forms as in the normal compiler
627 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
629 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
630 (thanks to Jon Buller)
631 * improvement: faster compilation times for complex functions
632 * improvement: added readlink support to SB-POSIX (thanks to Richard
635 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
636 * improvement: experimental support for mach exception handling on
637 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
639 * improvement: support for GBK external format.
640 (thanks to Chun Tian (binghe))
641 * improvement: the debugger now displays variables that have been closed
642 over, in code compiled with (DEBUG 2) or higher
643 * improvement: support for executable cores on NetBSD (thanks to
645 * new feature: added a RESTART-FRAME debugger command
646 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
647 be used to provide an implementation for FILE-POSITION on Gray streams
648 (thanks to Eric Marsden)
649 * new feature: add syslog, openlog and closelog support to SB-POSIX
650 (thanks to Richard Kreuter)
651 * optimization: the function call overhead in code compiled with
652 a high DEBUG optimization setting is significantly
653 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
654 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
655 (thanks to Tony Martinez)
656 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
657 evaluated once (reported by Kevin Reid)
658 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
659 works again (thanks to Kilian Sprotte)
660 * bug fix: an error is signaled for tagbodies with duplicate tags
661 (thanks to Stephen Wilson)
662 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
663 * bug fix: Win32 port can now handle foreign code unwinding Lisp
664 stack frames from alien callbacks.
665 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
666 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
667 65k pages (thanks to David Woodhouse)
668 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
670 changes in sbcl-1.0.1 relative to sbcl-1.0:
671 * new platform: FreeBSD/x86-64, including support for threading.
672 * new feature: the compiler stores cross-referencing information
673 about function calls (who-calls), macroexpansion (who-macroexpands)
674 and special variables (who-binds, who-sets, who-references) for code
675 compiled with (< SPACE 3). This information is available through the
676 sb-introspect contrib.
677 * new feature: users may subclass SEQUENCE, and have instances of
678 these classes interoperate with standard Common Lisp functions if
679 a number of methods are defined. (This feature is experimental
680 and the interface subject to change based on feedback from SBCL
681 users and the general community)
682 * improvement: sb-sprof traces call stacks to an arbitrary depth on
683 x86/x86-64, rather than the previous fixed depth of 8
684 * improvement: another pthread back-end of mutex "pthread-futex".
685 * bug fix: non-ascii command-line arguments are processed correctly
686 (thanks to Yaroslav Kavenchuk)
687 * bug fix: non-required arguments were not passed correctly when a method
688 defined using DEFMETHOD was called from a mop-generated method using
689 CALL-NEXT-METHOD (reported by Pascal Costanza)
690 * bug fix: recursion is now permitted in accessors through
691 SLOT-UNBOUND. (reported by Pascal Costanza)
692 * bug fix: an error was signaled at startup if the HOME environment
693 variable was defined, but had an empty value (reported by Peter Van Eynde)
694 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
695 signal a PROGRAM-ERROR, not a BUG.
696 * bug fix: SB-POSIX:READDIR works when built with large file support.
697 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
699 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
700 for better automatic indentation support. (thanks to Matt Pillsbury)
701 * optimization: loading generic functions no longer takes O(n^2) time,
702 proportional to the amount of methods in the generic function
703 (reported by Todd Sabin and Jeremy Brown)
704 * optimization: the FIND and POSITION family of sequence functions
705 are significantly faster on arrays whose element types have been
707 * improvements to the Windows port:
708 ** Intermittent heap corruption problems have been fixed. (thanks
709 to Alastair Bridgewater)
710 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
712 ** Lisp is able to unwind foreign exception frames from alien
713 callbacks. (thanks to Alastair Bridgewater)
715 changes in sbcl-1.0 relative to sbcl-0.9.18:
716 * improvement: experimental support for threading on FreeBSD/x86.
717 (thanks to NIIMI Satoshi)
718 * improvement: runtime option --dynamic-space-size can be used
719 to set the size of the dynamic space reserved on startup.
720 * improvement: floating point modes in effect are now saved in
721 core, and restored on startup.
722 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
723 startup, not time since first call to GET-INTERNAL-REAL-TIME.
724 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
725 threads are not running after *SAVE-HOOKS* have run.
726 * improvement: writes to CLOS instance slots are type-checked in code
727 compiled with (SAFETY 3)
728 * improvement: floating-point exception handling on FreeBSD (thanks to
730 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
731 (thanks to Zach Beane)
732 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
734 * improvement: added support for the Shift-JIS external format.
735 (contributed by NIIMI Satoshi)
736 * improvement: callbacks are supported on Linux/PPC. (thanks to
738 * bug fix: compiler bug triggered by a (non-standard) VALUES
739 declaration in a LET* was fixed. (reported by Kaersten Poeck)
740 * bug fix: file compiler no longer confuses validated and already
741 dumped structurres. (reported by Kaersten Poeck)
742 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
743 fill-pointer signals a type-error as required. (thanks to
745 * bug fix: disassemly of funcallable instances works.
746 * bug fix: single stepping on PPC.
747 * bug fix: fix thread-safety problems in the type system (generally
748 manifesting as nonsensical errors like "STRING is a bad type specifier
749 for sequences" or "The value 1 is not of type FIXNUM")
750 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
751 (reported by Josip Gracin)
752 * bug fix: an error is signaled for attempts to displace arrays with
753 incompatible element types (thanks to Mario Mommer)
754 * bug fix: more correct handling of wide characters in debug info
755 (bug reported by Attila Lendvai and fixed by Juho Snellman)
756 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
757 and don't cause extra consing
758 * optimization: MAP and MAP-INTO are significantly faster on vectors
759 whose elements types have been declared.
760 * Improvements to SB-SPROF:
761 ** Support for allocation profiling
762 ** Reduced profiling overhead, especially for long profiling runs
763 * Improvements to the Windows port:
764 ** floating point exceptions are now reported correctly.
765 ** stack exhaustion detection works partially.
766 ** more accurate GET-INTERNAL-REAL-TIME.
767 ** better RUN-PROGRAM behaviour in case of errors in the child
769 ** PROBE-FILE now simplifies pathnames correctly.
770 ** DIRECTORY now works correctly with :WILD-INFERIORS.
771 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
772 1st 1970 (although time timezone data will be unreliable).
773 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
775 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
776 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
777 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
779 * bug fix: two potential GC deadlocks affecting threaded builds.
780 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
781 returns T (reported by Anton Kazennikov)
782 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
783 with non-variable places
784 * bug fix: remove a race condition in the setting of
785 funcallable-instance functions, this should make threaded CLOS
786 code more stable against memory faults.
787 * bug fix: corruption of specials when unbinding is interrupted by an
788 asynchronous unwind (reported by Hannu Koivisto)
789 * improvement: the debugger will now also display local variables that
790 are only used once, for code compiled with a DEBUG optimization quality
793 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
794 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
795 * incompatible change: External-format support for FFI calls. The
796 SB-ALIEN:C-STRING no longer implies an ASCII
797 external-format. Instead the string is subject to external-format
798 conversion. Additionally return values of type SB-ALIEN:C-STRING
799 are by default of type (SIMPLE-ARRAY CHARACTER), not
800 SIMPLE-BASE-STRING. For an alien type that behaves like the old
801 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
802 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
803 * incompatible change: SB-EXT package no longer contains the
804 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
805 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
807 * incompatible change: the single-stepper is no longer available
808 on Alpha, Mips and Sparc platforms.
809 * minor incompatible change: the direct superclasses of
810 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
811 not (STANDARD-OBJECT FUNCTION). This makes the
812 class-precedence-lists of GENERIC-FUNCTION and
813 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
815 * minor incompatible change: the default stream external format on
816 non-unicode SBCL is no longer detected from the locale, but is always
818 * new feature: Add a version of evaluator that uses an interpreter instead
819 of the compiler. EVAL still uses the compiler by default, to switch it
820 to use the interpreter, set the value of the variable
821 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
822 * minor incompatible change: the single-stepper REPL has been merged
823 with the normal debugger (see the "Stepping" heading of the debugger help
824 for more details). The debugger command STEP will no longer switch
825 to the single-stepper REPL.
826 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
827 for a type now works.
828 * bug fix: loading of default sysinit file works. (thanks to Leonid
830 * bug fix: better detection of circularities in the file-compiler.
831 (reported by Marco Monteiro)
832 * bug fix: the CL pathname functions now work with files that have
833 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
834 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
835 systems with Unix98 pty semantics.
836 * bug fix: ASDF-INSTALL will now work with bsd tar.
837 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
839 * bug fix: timers expiring in dead threads no longer cause a
840 type-error (reported by Paul "Nonny Mouse").
841 * bug fix: thanks to more lightweight single-stepper instrumentation,
842 code compiled with (DEBUG 3) will compile and execute significantly faster,
843 and will have more accurate type-inferencing than before
844 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
845 whose bindings are modified
846 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
847 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
848 ** replace dummy implementations of CL:MACHINE-INSTANCE and
849 CL:SOFTWARE-VERSION with proper version
851 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
852 * feature: implemented the READER-METHOD-CLASS and
853 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
854 as specified by AMOP.
855 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
857 * optimization: faster LOGCOUNT implementation on x86 and x86-64
858 (thanks to Lutz Euler)
859 * optimization: hashing of general arrays and vectors has been
860 improved. (reported by Any Fingerhut)
861 * enhancement: SB-INTROSPECT is now able to find definitions of
862 profiled functions. (thanks to Troels Henriksen)
863 * enhancement: compiler-macro expansion applies now to FUNCALL forms
864 as well, allowing compiler-macros for SETF-functions to expand.
865 * enhancement: step-instrumentation no longer wraps known
866 single-value functions with multiple-value context, allowing
867 better type inference.
868 * fixed bug #337: use of MAKE-METHOD in method combination now works
869 even in the presence of user-defined method classes. (reported by
870 Bruno Haible and Pascal Costanza)
871 * fixed bug #339(c): if there are applicable methods not part of any
872 long-form method-combination group, call INVALID-METHOD-ERROR.
873 (reported by Bruno Haible)
874 * fixed bug #361: the :FUNCTION initarg in the protocol for
875 initialization of methods can now be used to override
876 internally-produced optimized functions. (reported by Bruno
878 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
879 system-provided lambda expression no longer cause warnings about
880 unbound #:|pv-table| symbols.
881 * bug fix: improved the handling of type declarations and the
882 detection of violations for keyword arguments with non-constant
884 * bug fix: potentially erronous calls to PATHNAME and
885 MERGE-PATHNAMES were being flushed in some cases.
886 (reported by Richard Kreuter)
887 * bug fix: compiled calls to TYPEP were mishandling obsolete
888 instances. (reported by James Bielman and Attila Lendvai)
889 * bug fix: format strings with ~> without matching ~< no longer
890 trigger an AVER, but signal an understandable error instead.
891 (reported by Antonio Martinez)
892 * bug fix: specifying an output-file without a pathname-type for
893 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
894 of input-file instead of "fasl". (reported by Robert Dodier)
895 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
896 (reported by James Y Knight).
897 * bug fix: compiler-macros-function did not consider the environment
898 argument for shadowing by local functions.
899 * bug fix: compiler-macros expansion was inhibited by local INLINE
901 * bug fix: inline expansions of known functions were subject to
902 step-instrumentation in high debug policies, leading to problems
904 * bug fix: compiler failed to differentiate between different CONS
906 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
907 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
908 * bug fix: #368: incorrect use of expressed vs. upgraded array
910 * bug fix: #306a: more precise unions of array types.
911 * thread-safety improvements:
912 ** CONDITION-WAIT could return early on Linux, if the thread was
913 interrupted and subsequently continued with SIGCONT.
914 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
916 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
917 * added support for the ucs-2 external format. (contributed by Ivan
919 * minor incompatible change: pretty printing of objects of type
920 (cons symbol) is, in the default pprint-dispatch-table, now
921 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
923 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
924 called later in a class's lifetime, possibly as late as when the
925 first instance of the class is created. Previously,
926 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
927 class became finalizeable.
928 * fixed bug: FILE-POSITION sometimes returned inconsistent results
929 for multibyte external-format streams. (thanks to "vbzoli")
930 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
931 with :ALLOCATION :CLASS inherited from superclasses of the
933 * fixed bug: anonymous classes can now be created using the :NAME
934 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
935 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
936 * fixed bug: core-files saved with :EXECUTABLE T can again be
937 executed when SBCL_HOME isn't set. (reported by James Knight)
938 * fixed bug: toplevel LOCALLY forms with declarations could
939 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
940 * fixed bug: printing from several different threads using different
941 values of *print-case* could cause invalid output, due to
942 some internal special variables of the printer not being bound
943 thread-locally (reported by Max Mikhanosha)
944 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
945 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
946 (reported by Pascal Costanza)
947 * fixed bug: FINALIZE-INHERITANCE is called from
948 REINITIALIZE-INSTANCE on classes when the class has previously
949 been finalized, as required by AMOP.
950 * minor code generation optimizations:
951 ** better register allocation in CLOS dispatching functions
952 ** overflow detection when coercing signed bytes to fixnums on x86-64
953 ** is now implemented with one IMUL instruction instead of three shifts
954 ** more efficient bit-vector access on x86 and x86-64
955 ** more efficient access to raw structure slots on x86 and x86-64
956 * fixed some bugs revealed by Paul Dietz' test suite:
957 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
960 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
961 * feature: thread support on Solaris/x86, and experimental thread support
963 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
965 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
966 default method for SLOT-UNBOUND.
967 * minor incompatible change: prevent the user from specializing the
968 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
969 somewhat counter to the intent of the protocol, I (CSR) think, and
970 additionally it just doesn't work in SBCL as currently
971 implemented, thanks to optimizations (that are always valid for
972 the other three SLOT-VALUEish functions, but not for the setter).
973 * minor incompatible change: the :SB-LDB feature is now enabled by
974 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
975 the low-level debugger.
976 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
977 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
978 down to an SB-SYS:FD-STREAM, allowing direct communication in
979 more cases. Temporary files and pipes are still used as a fallback
981 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
982 on the non-reentrant C functions localtime(3) and gmtime(3).
983 * bug fix: global optimization policy was not visible in LOCALLY and
985 * bug fix: class objects can be used as specializers in methods.
986 (reported by Pascal Costanza)
987 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
988 with a type error. (reported by blitz_ on #lisp)
989 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
990 failed with a type error. (reported by Pascal Bourguignon)
991 * bug fix: merging pathnames against defaults with :DIRECTORY
992 starting with '(:RELATIVE :BACK) should preserve the :BACK.
993 (reported by James Y Knight)
994 * bug fix: saving large (>2GB) cores on x86-64 now works
995 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
996 constant index and a (simple-array (signed-byte 32)) array
997 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
998 error (patch by Robert J. Macomber)
999 * feature: TIME now displays the amount of run-time spent in GC
1000 * bug fix: The debugger now does a better job of respecting
1001 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1002 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1003 workaround for bug 403.)
1004 * bug fix: floating point exception handling now works on FreeBSD
1005 (thanks to NIIMI Satoshi)
1006 * fixed some bugs revealed by Paul Dietz' test suite:
1007 ** MISC.641: LET-conversion were not supposed to work in late
1009 * improvements to the Win32/x86 port:
1010 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1011 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1013 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1014 * new feature: source path information is generated for macro-expansion
1015 errors for use in IDE's like Slime (thanks to Helmut Eller)
1016 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1017 * bug fix: compiler does not loop forever on an invalid type in
1019 * improvement: compilation of most CLOS applications is significantly
1021 * optimization: added a limited bytecode compiler for simple toplevel
1022 forms, speeding up compilation and FASL loading
1023 * bug fix: the statistical profiler now properly distinguishes anonymous
1026 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1027 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1028 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1029 into subclasses of the finalized class. Now user calls to
1030 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1031 system return before any subclasses are finalized.
1032 * minor incompatible change: The reader no longer ignores errors
1033 regarding non-existent packages in #+ and #- feature tests.
1034 * new feature: command line options --no-sysinit, --no-userinit to
1035 inhibit loading the corresponding init files
1036 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1037 for sending data through UDP sockets (thanks to François-René Rideau)
1038 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1039 error is signalled instead (thanks to François-René Rideau)
1040 * minor incompatible change: Error signalling behaviour of lexical
1041 operations violating package locks has changed slightly. Refer to
1042 documentation on package locks for details.
1043 * enhancement: EVAL can process IF-expressions without resorting to the
1045 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1046 constant-folded properly due to missing out-of-line functions.
1047 (reported by Mika Pihlajamäki)
1048 * bug fix: LISTEN sometimes returned T even in cases where no data was
1049 immediately available from the stream
1050 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1051 were reversed. (reported by Levente Mészáros)
1052 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1053 when given a vector displaced to an adjustable array. (reported
1055 * bug fix: derivation of float boundaries from numbers outside the
1056 appropriate float range (reported by John Wiseman)
1057 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1059 * bug fix: precomputing cache entries for generic functions with
1060 some subclasses of specializers as yet invalid does not attempt to
1061 fill a cache line with a negative offset. (reported by Levente
1063 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1064 allow condition class objects as arguments to DOCUMENTATION and
1065 (SETF DOCUMENTATION); only find and set documentation for
1066 structure names for the STRUCTURE doc-type. (suggested by Gary
1068 * improvements to the Win32/x86 port:
1069 ** (user-homedir-pathname) and default initialization file
1070 locations now know about the user's "Documents and Settings"
1071 directory (thanks to Yaroslav Kavenchuk)
1072 ** run-program is implemented (thanks to Mike Thomas)
1073 ** sockets support (thanks to Timothy Ritchey)
1074 ** better backtrace support (thanks to Alastair Bridgewater)
1075 ** sb-grovel supported
1076 ** asdf-install and sb-posix work somewhat
1077 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1078 * improvements to the Solaris/x86 port:
1079 ** works on Solaris 11/Solaris Express
1080 ** floating-point exception handling support
1081 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1082 * fixed some bugs revealed by Paul Dietz' test suite:
1083 ** REMOVE-METHOD returns its generic function argument even when
1084 the method is not one of the generic functions' methods.
1085 ** objects declared as MEMBER types can be admissible arguments to
1086 structure accessors.
1087 ** printing characters should simply be printed by the FORMAT ~:C
1089 ** compiler failure when compiling functions with hairy constant
1090 defaults for optional parameters.
1091 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1092 function, which is already optimized.
1094 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1095 * new platform: experimental support for SBCL x86/Darwin, including
1096 MacOS X 10.4.5 on Intel.
1097 * new feature: Unicode character names are now known to the system
1098 (through CHAR-NAME and NAME-CHAR).
1099 * new feature: the filesystem location of SBCL's core file is
1100 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1101 * minor incompatible change: the contrib modules SB-POSIX and
1102 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1103 this change is to make it easier to distribute
1104 location-independent binaries.
1105 * bug fix: as implied by AMOP, standardized classes no longer have
1106 slots named by external symbols of public packages. (reported by
1108 * optimization: calling functions via constant symbols -- as in
1109 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1110 via the function object as in (FUNCALL #'FOO).
1111 * optimization: on x86 and x86-64, the calling convention for the
1112 case of dealing with an unknown number of values has been altered
1113 to be friendlier to the prediction heuristics implemented,
1114 particularly with reference to CALL and RET pairing. (thanks to
1115 Alastair Bridgewater)
1116 * optimization: on x86, the code for access to thread-local symbol
1117 values and binding/unbinding of thread-local symbols is smaller.
1118 (thanks to Alastair Bridgewater)
1119 * enhancement: CONSTANTP is now able to determine constantness of
1120 more complex forms, including calls to constant-foldable standardized
1121 functions and some special forms beyond QUOTE.
1122 * fixed bug: occasional GC crashes on Solaris/x86
1123 * optimization: x86-64 supports stack allocation of results of simple
1124 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1125 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1126 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1127 (thanks to James Knight)
1128 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1129 by the standard (thanks to Stephen Compall)
1131 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1132 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1133 be used for bundling the runtime and the core file into one
1134 executable binary. This feature is not currently supported on all SBCL
1135 platforms. (thanks to James Bielman and NIIMI Satoshi)
1136 * new feature: a generational or ephemeral garbage collector is now
1137 the default on the PowerPC platform (both Linux and Darwin). The
1138 old Cheney (stop and copy) collector is a build-time option.
1139 (thanks to Cyrus Harmon, after Raymond Toy)
1140 * minor incompatible change: the method by which SBCL finds its
1141 contributed modules has changed; it no longer relies on symbolic
1142 links from an $SBCL_HOME/systems directory, but searches directly
1143 in the subdirectories of $SBCL_HOME.
1144 * enhancement: the dynamic heap size on the Linux/PPC platform is
1145 markedly larger, even using the older Cheney garbage collector.
1146 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1147 certain complicated string types. (reported by Gary King)
1148 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1149 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1150 * fixed bug: DOCUMENTATION on structures no longer signals an
1151 error if no structure type of the right name exists. (reported by
1153 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1154 applicable non-standard primary or :AROUND method on
1155 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1156 no longer cause unbound variable errors. (reported by Kevin Reid)
1157 * fixed bug: metacircle resolution in cases where methods have slots
1158 added before the slots from STANDARD-METHOD. (reported by Jean
1160 * fixed bug: the Power PC assembly code for calling into lisp
1161 sometimes computed its return address wrongly (depending on the
1162 15th bit of the address, fixed at link time). This used to
1163 manifest itself in a segmentation violation while building PCL.
1164 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1165 many others over the years)
1166 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1167 the stack pointer (treated as a signed integer) is negative.
1168 (thanks to Peter van Eynde)
1170 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1171 * new platform: experimental support for the Windows operating
1172 system has been added. (thanks to Alastair Bridgewater)
1173 * fixed several bugs in and robustified the PPC FFI (including
1174 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1175 * bug fix: allow non-simple string symbol names (reported by Paul
1177 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1179 * bug fix: saving a core corrupted callbacks on x86/x86-64
1180 * bug fix: closed a loophole in metacircularity detection and
1181 grounding in the PCL implementation of CLOS.
1182 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1183 (reported by tomppa on #lisp)
1184 * bug fix: clear the direction flag on Lisp -> C transitions, as
1185 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1186 (reported by Andrej Grozin and Hendrik Maryns)
1187 * optimization: major improvements to GC efficiency on GENCGC platforms
1188 * optimization: faster implementation of EQUAL
1189 * optimization: emit more efficient opcodes for some common
1190 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1191 * optimization: several other minor code-generation improvements on x86-64
1192 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1194 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1195 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1196 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1197 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1198 by ANSI as a generic function, and for consistency (SETF
1199 GENERIC-FUNCTION-NAME) is treated likewise.
1200 * fixed bug #233.b: make constraint propagation notice when a variable
1201 value is changed after it is referenced but before it is used
1202 * fixed bug #296: no more arbitrary behaviour from filenames with
1203 odd characters as --load arguments. (reported by Adam Warner)
1204 * fixed bug #390: :CHARACTER-SET pathname components now work as
1205 expected. (reported by Tim Daly Jr)
1206 * fixed bug #391: complicated :TYPE intersections in slot
1207 definitions no longer cause an error in PCL internals.
1208 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1209 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1210 returning the number of octets which would be written to the
1211 file-stream. (thanks to Robert J. Macomber)
1212 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1213 arguments to the internal stream functions. (thanks to David
1215 * bug fix: stack exhaustion is now handled on the x86/SunOS
1216 platform. (thanks to Daisuke Homma)
1217 * bug fix: more accurate ROOM results on GENCGC platforms
1218 * optimization: improved type inference for arithmetic-for
1219 index variables in LOOP
1220 * optimization: faster floating-point SQRT on x86-64
1221 * fixed some bugs revealed by Paul Dietz' test suite:
1222 ** DOCUMENTATION returns NIL instead of "" for method combinations
1223 that don't have a docstring
1225 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1226 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1227 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1228 therefore are not customizeable by user code (as seems to be at
1229 least permitted and maybe required by AMOP). As a consolation,
1230 however, the SBCL implementation of these functions now calls
1231 REINITIALIZE-INSTANCE as specified by AMOP.
1232 * bug fix: slot-definition documentation is propagated as per ANSI
1233 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1234 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1235 argument, as do eslotd initialization methods. (from Pascal
1236 Costanza's "Closer" project)
1237 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1238 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1240 * bug fix: it is now possible to have more than one subclass of
1241 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1242 (reported by Bruno Haible, Pascal Costanza and others)
1243 * bug fix: the dependent update protocol now works for generic
1244 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1245 and Pascal Costanza)
1246 * bug fix: condition-class instances corresponding to
1247 DEFINE-CONDITION forms are now created eagerly. (reported by
1248 Kalle Olavi Niemitalo on comp.lang.lisp)
1249 * bug fix: floating point printing is more accurate in some
1250 circumstances. (thanks to Simon Alexander)
1251 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1252 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1253 * bug fix: callbacks on OS X now preserve stack-alignment.
1254 (thanks to Cyrus Harmon)
1255 * enhancement: the x86-64 disassembler is much better at
1256 disassembling SSE instructions. (thanks to Lutz Euler)
1257 * enhancement: CHECK-TYPE on a variable now allows type-inference
1258 (thanks to Vincent Arkesteijn)
1259 * optimization: improved performance of EUC-JP external format.
1260 (thanks to NIIMI Satoshi)
1261 * optimization: performance improvements to IO on file streams of
1262 :ELEMENT-TYPE CHARACTER
1263 * optimization: much faster memory allocation on x86-64
1264 * optimization: faster garbage collections (latency and throughput)
1266 * optimization: faster bignum subtraction and division on x86 and x86-64
1267 (thanks to Lutz Euler)
1268 * optimization: more accurate type-inference for loops that use a
1269 floating point index variable or a negative step.
1271 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1272 * bug fix: add a workaround to SBCL looping infinitely at startup on
1273 Linux kernels with apparently buggy implementations of personality().
1274 (thanks to Svein Ove Aas)
1275 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1276 (thanks to David Lichteblau)
1277 * bug fix: local bindings shadow global symbol macros for
1278 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1279 * optimization: non-open coded uses of numeric comparison operators
1280 (e.g. >) no longer cons when called with more than one parameter
1281 on platforms supporting dynamic-extent allocation.
1282 * enhancement: saving cores with foreign code loaded is now supported
1283 on MIPS/Linux in addition to the previously supported platforms.
1284 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1285 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1286 * bug fix: division by zero in sb-sprof when no samples were collected
1287 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1288 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1289 (thanks to Alexander Kjeldaas)
1290 * new feature: ignoring the return values of destructive functions
1291 like NREVERSE signals a compile-time style-warning.
1292 (thanks to Kevin Reid)
1293 * new feature: the alignment of alien structure fields can be
1294 explicitly specified. (thanks to Cyrus Harmon)
1295 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1296 and dump core on SIGQUIT
1298 ** incompatible change: threads do not inherit values of specials
1299 from their parents (see manual)
1300 ** bug fix: threads stacks belonging to dead threads are freed by the
1301 next exiting thread, no need to gc to collect thread stacks anymore
1302 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1303 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1304 ** bug fix: dynamic variable and thread start related gc lossage
1305 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1307 * fixed some bugs revealed by Paul Dietz' test suite:
1308 ** SUBTYPEP is slightly more accurate on heinously complicated
1309 CONS types where some of the members have uncertain (in the
1310 NIL, NIL sense) type relationships to each other.
1312 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1313 no longer purified unless :PURIFY T is explicitly specified.
1314 ** Non-purified cores are significantly smaller than before
1316 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1317 * new feature: timers based on Zach Beane's excellent timer package
1318 * added support for the following external formats: koi8-u,
1319 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1320 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1321 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1322 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1323 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1324 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1325 * incompatible change: a threaded SBCL will no longer revert to
1326 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1327 * bug fix: interrupts are disabled until startup is complete; no
1328 more sigsegvs when receiving a signal to soon
1329 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1331 * bug fix: add a workaround for the memory randomization features in
1332 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1333 workaround will only be in effect on systems with the proc filesystem
1335 * bug fix: printing objects of type HASH-TABLE signals a
1336 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1338 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1339 have been running for over 50 days. (reported by Gilbert Baumann)
1340 * bug fix: the logic for getting names of functions gets less
1341 confused when confronded with alternate-metaclass
1342 funcallable-instances. (reported by Cyrus Harmon)
1343 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1344 consistent, even on internal alternate-metaclass objects.
1345 * bug fix: flush closure information collected by physical
1346 environment analysis prepass before the main pass. (bug reported
1348 * bug fix: compiler pack phase does not modify a hashtable, which is
1349 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1350 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1351 may be expanded. (reported by Alexander <malishev> on c.l.l)
1352 * bug fix: no more style-warnings when compiling code using LAST
1353 under high-SPEED low-SPACE settings. (reported by David Wallin
1355 * fixed some incompatibilities between SBCL's MOP and the MOP
1357 ** the METAOBJECT class is now implemented;
1358 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1359 STANDARD-OBJECT, as required;
1360 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1361 now compatible (as required by VALIDATE-SUPERCLASS); there
1362 remains a consistency requirement over the presence or absence
1363 of the FUNCTION class in the superclass list of finalized
1364 classes; see the manual for more details;
1365 ** the :AROUND method for COMPUTE-SLOTS on
1366 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1367 requested slot ordering.
1369 ** bug fix: parent thread now can be gc'ed even with a live
1371 ** bug fix: binding a special with PROGV to no value is not
1372 the same as that symbol not having been bound (thanks to
1374 ** bug fix: binding specials is thread safe (thanks to
1376 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1377 and SB-SPROF do not die with 'no handler for signal XX in
1378 interrupt_handle_now(..)' anymore
1379 ** bug fix: WITH-TIMEOUT works with multiple running threads
1380 * fixed some bugs revealed by Paul Dietz' test suite:
1381 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1382 the :method-class keyword argument.
1384 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1385 * new port: the Solaris operating system on x86 processors is now
1386 mostly supported, though some rough edges in the environment
1387 remain. (thanks to Daisuke Homma)
1388 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1389 space for its heap. (thanks to Thiemo Seufer)
1390 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1391 closures. (thanks to Thiemo Seufer)
1392 * minor incompatible change: eof selects abort in the debugger.
1393 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1394 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1396 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1397 deprecated, and will go away in a future revision of SBCL.
1398 * minor incompatible change: GC-ON and GC-OFF are no longer
1399 implemented with a counter, it does not matter how many times gc
1400 is switched on or off
1401 * bug fix: discriminating functions for generic function classes
1402 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1403 make invalid assumptions about method precedence order. (reported
1405 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1406 platforms. (thanks to Thiemo Seufer)
1407 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1408 * bug fix: correct pathname printing with printer escaping is on.
1409 (thanks to Kevin Reid)
1410 * bug fix: complex VOP definitions in "user-space" no longer trigger
1411 package locks. (reported by Zach Beane)
1412 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1413 for funcallable-instance functions, and is no different from
1415 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1416 characters in the current readtable. (reported by Nicholas Neuss)
1417 * bug fix: SUBTYPEP on various CONS types returns more a more
1418 accurate acknowledgment of its certainty.
1419 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1420 lists in some cases. This partially fixes bug 384.
1421 * flush all standard streams before prompting in the REPL and the
1423 * bug fix: signal handling and triggering gc do not conflict
1424 directly anymore, in particular a high frequency sb-sprof does
1425 not prevent gc from running
1426 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1427 approximation for timezone and DST information between the
1428 universal time epoch and the smallest negative 32-bit time_t.
1429 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1430 year 1899 so long as the encoded time is non-negative.
1431 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1432 the correct answer for non-constant rotate amounts when performing
1433 an inline 32-bit rotation.
1435 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1436 there is only one thread in the session
1437 ** bug fix: memory leak for streams created in one thread and
1438 written to in another
1439 ** bug fix: lockup when compiled with gcc4
1440 ** bug fix: race that allows the gc to be triggered when gc is
1442 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1443 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1445 ** bug fix: finished threads are gc'ed properly
1446 * fixed some bugs revealed by Paul Dietz' test suite:
1447 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1448 has arguments with a different set of applicable methods from
1449 the orignal arguments.
1450 ** The type error thrown by MAP now has a correct expected-type
1452 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1453 name a compiled function.
1454 ** Three MISC tests where a large bignum was improperly coerced to
1455 a float that couldn't represent that bignum during type
1456 derivation were fixed.
1457 ** SUBTYPEP can now handle types involving the negation of a
1458 list-form FUNCTION type.
1459 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1460 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1461 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1463 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1464 * New feature: Experimental support for bivalent streams: streams
1465 opened with :element-type :default now allow character and binary
1466 (unsigned-byte 8) I/O
1467 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1468 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1470 * bug fix: no more highly sporadic "couldn't check whether ~S is
1471 readable" when reading a stream and an interrupt hits in the middle
1472 of a select system call
1473 * compiler better recognizes complex arrays (reported by Eduardo
1475 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1476 for variables on SBCL built with linkage-tables. (reported by Luis
1478 * various error reporting improvements.
1479 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1480 (Thanks to Thiemo Seufer)
1481 * bug fix: nested reader invokations work correctly
1482 * bug fix: it is possible to have simultaneous references to foreign
1483 code and foreign data with the same name.
1485 ** added x86-64 support
1486 ** incompatible change: the threading api now works with thread
1487 objects instead of thread ids
1488 ** bug fix: threads are protected from signals and interruption when
1489 starting up or going down
1490 ** bug fix: a race where an exiting thread could lose its stack to gc
1491 ** bug fix: don't halt on infinite error in threads if possible
1492 ** fixed numerous gc deadlocks introduced in the pthread merge
1493 ** bug fix: fixed thread safety issues in read and print
1494 ** bug fix: debugger doesn't hang on session lock if interrupted at
1495 an inappropriate moment
1496 ** bug fix: run-program is now thread safe(r)
1497 ** bug fix: inner with-recursive-lock no longer releases the mutex
1498 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1499 * fixed some bugs revealed by Paul Dietz' test suite:
1500 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1501 EXPECTED-TYPE slots filled.
1502 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1504 ** MAKE-CONDITION accepts classes as type-designators.
1505 ** COMPILE may never return NIL.
1506 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1507 range before calling Unix time functions
1509 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1510 * numerous signal handling fixes to increase stability
1511 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1512 * minor incompatible change: we now correctly canonize default
1513 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1514 as per the MOP, rather than the historical (INITARG INITFUNCTION
1515 INITFORM). (reported by Bruno Haible)
1516 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1517 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1518 for more information.
1519 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1520 pathname is a directory pathname.
1521 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1522 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1524 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1525 :METACLASS argument in addition to a class name. (reported by
1526 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1527 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1528 (reported by Bruno Haible; patch from Gerd Moellmann)
1529 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1531 * bug fix: more cleanups to the floating point exception handling on
1532 x86-64 (thanks to James Knight)
1533 * bug fix: the compiler does not try to constant fold calls of
1534 COERCE and BIT-* functions when they return freshly constructed
1535 objects. (reported by Nikodemus Siivola and Paul Dietz)
1536 * optimization: improved the MIPS versions of generic (in the
1537 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1538 * optimization: direct conversion of (unsigned-byte 32) to floats on
1539 the PowerPC platform.
1540 * optimization: structure instances with raw slots now use less
1541 memory, and probably show better memory locality. (thanks to
1543 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1544 are treated as requests for stack allocation on the x86-64,
1545 Alpha-32, PPC and SPARC platforms.
1546 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1547 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1548 (thanks to Tony Martinez)
1550 ** gcing a dead thread can no longer lead to lockups
1551 ** threads block signals until they are set up properly
1552 ** errno is no longer shared by threads
1553 ** interrupt-thread restores the eflags register on x86
1554 ** fixed some lockups due to gc/thread interaction
1555 * fixed some bugs revealed by Paul Dietz' test suite:
1556 ** invalid dotted lists no longer raise a read error when
1557 *READ-SUPPRESS* is T
1558 ** signal an error if a symbol that names a declaration is used
1559 as the name of a type, or vice versa
1560 ** allow using the (declare (typespec var*)) abbreviation for
1561 (declare (type typespec var*)) with all type specifiers
1562 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1563 ** always return NIL from PPRINT-POP when OBJECT is NIL
1564 ** don't signal errors when pretty-printing malformed LABELS,
1565 FLET or MACROLET forms
1566 ** declarations in a DOLIST body are also in scope for the
1568 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1570 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1573 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1574 * fixed cross-compiler leakages that prevented building a 32-bit
1575 target with a 64-bit host compiler.
1576 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1577 opened with :IF-EXISTS :OVERWRITE.
1578 * fixed bug 281: error for an invalid qualifier in a short-form method
1579 combination method is not signalled until the faulty method is called.
1580 * bug fix: iteration variable type inferrer failed to deal with open
1581 intervals. (reported by Alan Shields)
1582 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1583 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1584 or more runtime options were provided to the sbcl binary.
1585 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1586 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1587 * optimization: there's now a fast-path for fixnum arguments in the
1588 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1589 * optimization: the code generated on x86-64 is more compact thanks
1590 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1591 * bug fix: floating-point exception handling now partly works on
1592 x86-64. (Thanks to James Knight)
1593 * improvement to the MIPS backend from Thiemo Seufer: C-style
1594 64-bit long long arguments and return values to alien functions
1596 * fixed some bugs revealed by Paul Dietz' test suite:
1597 ** the type-error signalled from WARN has a filled-in DATUM slot.
1598 ** the type-error required when a stream is not associated with
1599 a file has the stream as its datum.
1600 ** type-errors on single-floats on x86-64 no longer have
1601 :INVALID-OBJECT as the datum
1602 ** the type-errors signalled for invalid function names now have
1603 a correct expected type
1604 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1605 for structures defined with a :TYPE. Documentation strings for
1606 typed structures are no longer immediately discarded
1607 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1608 broadcast streams and synonym streams. FILE-LENGTH now also works
1609 on broadcast streams.
1611 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1612 * incompatible change: the --noprogrammer option, deprecated since
1613 version 0.7.5, has been removed. Please use the equivalent
1614 --disable-debugger option instead.
1615 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1617 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1618 inoperational for a while now) has been completely removed.
1619 * null lexical environments are now printed as #<NULL-LEXENV>,
1620 significantly reducing the amount of clutter in typical backtraces.
1621 * documentation on weak pointers, finalization, and after GC hooks
1622 has been added to the manual.
1623 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1624 as other specialized array types, is much faster. SUBSEQ and
1625 COPY-SEQ on such arrays have also been sped up.
1626 * optimization: EQL is now more efficient when at least other argument
1627 is known to be of type (OR FIXNUM (NOT NUMBER)).
1628 * fixed bug: the runtime is now less vulnerable to changes in the
1629 size of the SBCL object on OS X, and virtual memory is reserved for
1630 all spaces that need to be at a fixed address.
1631 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1632 * fixed bug: finalizers and after GC hooks that cause consing are now
1634 * fixed bug: compiler error messages and summaries are now printed to
1635 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1636 * fixed inference of the upper bound of an iteration variable.
1637 (reported by Rajat Datta).
1638 * fixed bug 211e: calling local functions with duplicated constant
1639 keyword argument no longer causes a bogus style warning about an
1641 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1642 ftype declaration to be disregarded. (reported by Dave Roberts)
1643 * fixed bug 373: caused by erronous compilation of references to alien
1644 variables in the runtime on ppc/darwin.
1645 * fixed bug 376: CONJUGATE type deriver.
1646 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1647 (reported by Baughn on #lisp)
1648 * a cross-compiler bug on non-x86 platforms has been identified and
1649 fixed. (thanks to Bruno Haible)
1650 * improvements to the MIPS runtime code for increased stability.
1651 (thanks to Thiemo Seufer)
1652 * increased the maximimum compact environment size to allow
1653 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1654 * partial workaround for bug 135: don't name the function we're
1655 calling for hairy cases of EVAL, so as not to accumulate one environment
1656 entry per call to EVAL. (reported by Kevin Reid)
1657 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1658 * optimization: type testing for non-vector arrays should be faster.
1659 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1661 * bug fix: setting 31st element of a bit vector to zero did not work
1663 * bug fix: redefining a class definition which failed due to a
1664 previous accessor / function clash now works (but see BUGS entry
1665 #380 for more problems in this area). (thanks to Zach Beane)
1666 * the long form of DEFINE-METHOD-COMBINATION disables method group
1667 checking when given a single method group with pattern *. (thanks
1669 * on x86 compiler supports stack allocation of results of simple
1670 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1671 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1672 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1673 * fixed some bugs related to Unicode integration:
1674 ** the restarts for recovering from input and output encoding
1675 errors only appear when there is in fact such an error to
1677 * fixed some bugs revealed by Paul Dietz' test suite:
1678 ** MISC.549 and similar: late transformation of unsafe type
1679 assertions into derived types caused unexpected code
1681 ** SCALE-FLOAT type deriver is less wrong.
1682 ** type derivers for EXP, LOG and similar functions compute result
1683 types for complex arguments better.
1684 ** (MISC.563) CONJUGATE type deriver works for very restricted
1686 ** out-of-line type testers for character strings are available.
1687 ** EQUAL compiler transform understands specialness of objects
1689 ** accessing double-floats stored on the stack now works on x86-64.
1690 ** debugger internals could sometimes create invalid lispobjs,
1691 resulting in GC crashes.
1692 ** MISC.548: type check weakening can convert required type into
1694 ** initialization forms for bindings are not in scope of free special
1697 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1698 * incompatible change: thread support for non-NPTL systems has
1699 been removed - locking is buggy and unreliable. A threaded
1700 SBCL build will now warn at startup and refuse to create
1701 new threads, unless futex support is detected in the kernel
1702 * incompatible change: the top level REPL now has only an ABORT
1703 restart associated with it, not TOPLEVEL and ABORT as it used to.
1704 TOP and TOPLEVEL are now available as debugger commands for
1705 returning to the top level.
1706 * incompatible change: forms evaluated in the REPL now use the
1707 global optimization policy.
1708 * incompatible change: user- and system-initialization files are
1709 no longer processed with LOAD, but by READ and EVAL; hence the
1710 global optimization policy, startup package, readtable, etc,
1712 * The .fasl file format number has been incremented because of
1713 various incompatible changes.
1714 * internal entry point details and argument counts no longer appear
1715 in backtraces unless explicitly requested by setting
1716 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1717 * built-in and standard functions no longer have names like "top
1718 level local call to FOO".
1719 * fixed bug 32: functions defined in non-null lexical environments
1720 now have more legible printed representation
1721 * fixed bug 33: functions defined in non-null lexical environemnts
1722 are now more amenable to inspection by INSPECT.
1723 * workaround for bug 354: XEPs no longer appear in backtraces unless
1724 explicitly requested.
1725 * fixed bug: receiving the signal which results from attempting to
1726 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1727 SIGBUS on other *BSDs) on architectures where the C stack is also
1728 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1729 to debugger confusion or wild instability. (reported by Cheuksan
1731 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1732 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1733 (reported by Lutz Euler)
1734 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1735 compiled code. (reported by Paul Dietz)
1736 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1737 specialized parameter to a method to something that is not TYPEP
1738 the specializer is now possible.
1739 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1740 face of package deletion.
1741 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1742 pathname. (reported by David Tolpin on c.l.l)
1743 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1744 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1745 STRING-STREAM and FILE-STREAM, respectively.
1746 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1747 than previously; in addition, its test suite is now run on build.
1748 (thanks to Luke Gorrie)
1749 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1750 * optimization: added a immediate representation for single-floats
1752 * fixed some bugs revealed by Paul Dietz' test suite:
1753 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1754 ** attempting to create a package with a colliding nickname causes
1755 correctable errors to be signalled.
1756 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1757 ** several x86-64 backend bugs related to sign-extension of immediate
1760 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1761 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1762 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1764 * fixed loading of multiply forward-referenced layouts.
1765 (thanks to Cheuksan Wang)
1766 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1767 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1768 (see COMPILE-FILE documentation for details of :PRINT option)
1769 * fixed bugs 19 and 317: fixed-format floating point printing is
1770 more accurate. This also fixes a bug reported by Adam Warner
1771 related to the ~@F format directive.
1772 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1774 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1775 dispatch table if the from-char is a dispatch macro character.
1776 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1777 by the wordsize no longer ignore the last word. (reported by Lutz
1779 * fixed bug in type checking of dynamic-extent variables. (reported
1781 * optimization: sequence traversal functions use their freedom to
1782 coerce function designators to functions.
1783 * optimization: code with many calls to CLOS methods specialized on
1784 CLOS classes has had redundant type checks removed.
1785 * optimization: added declarations to speed up operations that access
1786 the internal character database (for example STRING-UPCASE)
1787 * optimization: comparison operations between floats and sufficiently small
1788 fixnums no longer create extra rationals
1789 * fixed some bugs related to Unicode integration:
1790 ** portions of multibyte characters at the end of buffers for
1791 character-based file input are correctly transferred to the
1792 start of the buffer at the next read.
1793 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1794 passing it through to OPEN.
1795 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1796 argument given to internal calls to OPEN.
1797 ** the built-in comment readers (introduced by character sequences
1798 ";" and "#|") are more forgiving to encoding errors; they will
1799 STYLE-WARN and then attempt to resync the stream at a character
1800 boundary. (thanks to Teemu Kalvas)
1801 * fixed some bugs in the x86-64 port:
1802 ** Negative short int return values from c-calls are sign-extended
1804 ** The stack is aligned to 16-bytes for c-calls, as required by
1805 the ABI. (thanks to Cheuksan Wang)
1806 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1807 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1808 for enums. (thanks to Vincent Arkesteijn)
1809 ** Multiple small optimizations and bugfixes for floating point
1811 * fixed some bugs revealed by Paul Dietz' test suite:
1812 ** Space, Tab, Linefeed, Return and Page have the invalid
1813 secondary constituent character trait.
1814 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1816 ** WITH-INPUT-FROM-STRING should only update the index place on
1818 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1819 works more reliably.
1820 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1821 with one-dimensional arrays with fill pointers.
1822 ** TYPE-OF failed on a complex with an integer realpart and a
1824 ** compiler failure during type inference for the code of form
1825 (IF (EQL X (THE ...)) ...) (MISC.535).
1827 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1828 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1829 platform. The port supports 61-bit fixnums, large memory spaces
1830 and reloading shared object files.
1831 * enhancement: saving cores with foreign code loaded is now
1832 supported on ppc/Darwin in addition to the previously supported
1834 * enhancement: the statistical profiler now walks deeper into the
1835 call stack for more meaningful call-graphs and accrued time
1836 reports (x86/x86-64 only). It also now reports time spent in
1838 * enhancement: it is now possible to trace most individual methods
1839 of a generic function in addition to tracing the generic function
1841 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1843 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1844 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1845 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1846 produces an error. (thanks to Vincent Arkesteijn)
1847 * bug fix: NAMESTRING on pathnames with :WILD components in their
1848 directories works correctly. (thanks to Artem V. Andreev)
1849 * fixed bug 125: compiler preserves identity of closures. (reported
1851 * bug fixed: functions with &REST arguments sometimes failed with
1852 "Undefined function" when compiled with (DEBUG 3). (reported by
1854 * bug fix: overflow during compiling of setting element of a bit
1855 vector with constant index and value. (reported by Timmy Douglas)
1856 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1857 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1858 * on x86 compiler partially supports stack allocation of dynamic-extent
1860 * GO and RETURN-FROM do not check the extent of their exit points
1861 when compiled with SAFETY 0.
1862 * fixed some bugs related to Unicode integration:
1863 ** encoding and decoding errors are now much more robustly
1864 handled; it should now be possible to recover even from invalid
1865 input or output to the terminal. (thanks to Teemu Kalvas)
1866 ** provided a first cut at implementing STRING-TO-OCTETS and
1867 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1868 ** altered the SB-MD5 contributed module slightly, changing the
1869 interface just enough for it to be supportable for builds where
1870 lisp characters are not eight bits.
1871 * fixed some bugs revealed by Paul Dietz' test suite:
1872 ** the FORMATTER-generated functions for ~V[ conditionals require
1873 the correct number of arguments.
1874 ** READ-FROM-STRING returns the mandated second value when applied
1875 to displaced strings.
1876 ** the #\Rubout and #\Backspace characters are treated as invalid
1877 constituent characters by the tokenizer.
1879 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1880 * new feature: reloading changed shared object files with
1881 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1882 * new feature: references to foreign variables and functions
1883 can now be compiled and loaded before the corresponding shared
1884 object file is loaded, as long as the foreign definitions are
1885 available at runtime.
1886 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1887 supported. (thanks to Dan Debertin)
1888 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1889 just keywords. (thanks to Vincent Arkesteijn)
1890 * fixed bug #331: structure-class instances corresponding to
1891 DEFSTRUCT forms are now created eagerly.
1892 * fixed bug #345: backtraces from calls to undefined functions work
1893 on x86 as well. Related bug #61 is now also partially fixed on x86
1894 (backtraces from throws to unknown catch tags.)
1895 * bug fix: lambda-list parsing is now stricter vrt. order and number
1896 of lambda-list keywords.
1897 * bug fix: as specified by AMOP, an error is signalled if a
1898 class-option appears multiple times in a DEFCLASS form. (reported
1900 * bug fix: RANDOM can be compiled when the compiler derives the type
1901 of its numeric argument as a disjoint set of small integers.
1902 (reported by Paul Dietz)
1903 * bug fix: starting a core saved with shared objects loaded when
1904 those objects are not available no longer causes threaded SBCL to
1905 hang. (reported by Sean Ross)
1906 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1908 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1909 argument, which must always be NIL. (reported by Kalle Niemitalo)
1910 * bug fix: printing 1.0d+23 no longer results in an error.
1911 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1912 * bug fix: structure slot setters preserve evaluation order. (thanks
1914 * fixed some bugs related to Unicode integration:
1915 ** RUN-PROGRAM can allow its child to take input from a Lisp
1916 stream. (reported by Stefan Scholl)
1917 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1918 locales. (reported by Ken Causey)
1919 * fixed some bugs revealed by Paul Dietz' test suite:
1920 ** INCF, DECF and REMF evaluate their place form as specified in
1922 ** FORMATTER expands ~{ ~} iteration directives with V or #
1923 parameters correctly.
1924 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1925 consequent uses no arguments correctly.
1926 ** the system has a partial understanding of the (COMPLEX RATIO)
1928 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1931 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1932 * new feature: a build-time option (controlled by the :SB-UNICODE
1933 keyword feature, enabled by default) for building the system with
1934 support for the entire 21-bit character space defined by the
1936 * new feature: the system now has rudimentary external-format
1937 support; the primary user-visible change at this time is that
1938 characters with the high bit set (such as lower-case-e-acute) will
1939 print correctly to a terminal in a UTF-8 environment.
1940 * minor incompatible change: BASE-CHAR no longer names a class;
1941 however, CHARACTER continues to do so, as required by ANSI.
1942 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1943 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1944 has been moved to the SB-EXT package (temporarily re-exported from
1946 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1947 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1949 * fixed bug #351: better error-handlind and reporting for malformed
1951 * fixed bug #350: bignum-printing is now more memory-efficient,
1952 allowing printing of very large bignums, eg. (expt 2 10000000).
1953 (reported by Bruno Haible)
1954 * fixed bug #302: better primitive-type selection for intersection
1956 * fixed bug #308: non-graphic characters now all have names, as
1957 required. (reported by Bruno Haible)
1958 * bug fix: redefining a class with different superclasses now correctly
1959 removes it from the direct-subclasses of its previous superclasses.
1960 (reported by David Morse)
1961 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1962 new value now works. (reported by Bruno Haible)
1963 * bug fix: correct canonicalization of multiple non-standard slot
1964 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1965 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1966 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1967 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1968 now exists, an signals an error.
1969 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1970 during macroexpansion for non-iteration variables as well. (reported
1971 by Bruno Haible for CMUCL)
1972 * bug fix: Cyclic structures and unprintable objects in compiler
1973 messages no longer cause errors. (reported by Bruno Haible)
1974 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1975 and READ-FROM-STRING all now return a primary value of NIL if
1976 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1977 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1978 (reported by Bruno Haible for CMUCL)
1979 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1980 do not designate a condition. (reported by Bruno Haible for
1982 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1983 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1984 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1985 permitting resolution in favour of any of the conflicting symbols.
1986 (reported by Bruno Haible for CMUCL)
1987 * bug fix: EQUAL compiler optimizations is less aggressive on
1988 strings which can potentially compare true despite having distinct
1989 specialized array element types.
1990 * bug fix: unit enumerations can be defined without dividing by
1991 zero. (thanks to Vincent Arkesteijn)
1992 * FORMAT compile-time argument count checking has been enhanced.
1993 (report from Bruno Haible for CMUCL)
1994 * a partial workaround for the bug 262: the compiler does not try to
1995 inline-expand a local function doing RETURN-FROM from a deleted
1996 BLOCK. (thanks to Peter Denno for the bug report and to David
1997 Wragg for the simple test case)
1998 * fixed some bugs revealed by Paul Dietz' test suite:
1999 ** RENAME-PACKAGE allows all package designators as new package
2001 ** constraint propagation and lambda variable substitution are
2002 more cautious in dealing with partially deleted code.
2003 ** compiler sometimes lost reoptimization passes.
2004 ** CERROR, given a condition as condition designator, passes its
2005 remaining arguments to the continue format control without
2007 ** Case-altering FORMAT directives work correctly on non-ASCII
2009 ** The REAL type specifier handles bounds outside the floating
2010 point ranges without signalling FLOATING-POINT-OVERFLOW.
2011 ** Functions with IR1-transformations can create intercomponent
2012 references to global functions.
2013 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2015 ** FORMAT ~R treats a nil value for its first parameter correctly.
2017 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2018 * enhancement: saving cores with foreign code loaded is now
2019 supported on x86/NetBSD and sparc/Linux in addition to the previously
2020 supported platforms.
2021 * bug fix: on some platforms repeated installations caused multiple
2022 copies of HTML documentation to be installed -- should not happen
2023 any more. (reported by Stefan Scholl)
2024 * bug fix: parsing self-recursive alien record types multiple times
2025 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2026 original patch by Helmut Eller for CMUCL)
2027 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2028 (thanks to Richard Kreuter)
2029 * bug fix: defining classes whose accessors are methods on existing
2030 generic functions in other (locked) packages no longer signals
2031 bogus package lock violations. (reported by François-René Rideau)
2032 * bug fix: special variables as DEFMETHOD parameters no longer have
2033 associated bogus type declarations. (reported by David Wragg and
2035 * bug fix: read-write consistency on streams of element-type
2036 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2037 * bug fix: redefiniton of the only method of a generic function with
2038 no DEFGENERIC no longer emits a full WARNING. In addition,
2039 redefinition of generic functions with no DEFGENERIC to an
2040 incompatible lambda list now signals an error. (thanks to Zach
2042 * bug fix: DEFGENERIC now works even when there's a function of the
2043 same name in an enclosing lexical environment. (thanks to Zach
2045 * fixed compiler failure, caused by instrumenting code during
2046 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2047 * optimization: added loop analysis and improved register allocation
2048 * fixed some bugs revealed by Paul Dietz' test suite:
2049 ** POSITION on displaced vectors with non-zero displacement
2050 returns the right answer.
2051 ** (SIMPLE-STRING) is a valid type specifier for sequence
2053 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2055 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2056 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2058 ** The justification version of the FORMAT ~< directive treats
2059 non-zero minpad parameter correctly.
2061 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2062 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2063 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2064 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2065 the supported interface.
2066 * new feature: Single-stepping of code compiled with DEBUG 2 or
2067 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2068 * new feature: saving cores with foreign code loaded is now
2069 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2070 Timothy Moore's work for CMUCL)
2071 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2072 parameters to * instead of NIL if no initform is supplied.
2073 (reported by Johan Bockgaard)
2074 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2075 correctly when FUNCALL appears as the car of the form. Note:
2076 despite this FUNCALL forms are not currently subject to
2077 compiler-macro expansion. (port of Raymond Toy's fix for the
2078 same from CMUCL, reported by Johan Bockgaard)
2079 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2080 (thanks for Teemu Kalvas)
2081 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2082 case instead of terminating the iteration (thanks for Julian
2083 Squires, Sean Champ and Raymond Toy)
2084 * bug fix: incorrect expansion of defgeneric that caused a style
2085 warning. (thanks for Zach Beane)
2086 * bug fix: slot accessor effective method computation works properly
2087 for classes with multiple non-standard applicable methods on
2088 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2089 * on x86 compiler supports stack allocation of results of LIST and
2090 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2091 CMUCL implementation by Gerd Moellmann)
2092 * fixed some bugs revealed by Paul Dietz' test suite:
2093 ** FORMAT strings with both the ~<~:;~> form of the justification
2094 directive and pretty-printing directives cause an error.
2096 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2097 * incompatible change: the internal functions
2098 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2099 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2100 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2101 instead of the old functions.
2102 * new feature: on platforms where "dladdr" is available foreign
2103 function names now appear in backtraces. (based on Helmut Eller's
2105 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2106 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2108 * documentation: ASDF manual is now distributed with SBCL.
2109 * bug fix: SBCL can now load its contributed modules with REQUIRE
2110 even if the system-provided entries have been removed from
2111 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2113 * bug fix: backtraces involving undefined functions or assembly
2114 routines are more informative. (thanks to Brian Downing)
2115 * bug fix: mutually referent alien structures now work correctly.
2116 (reported by Rick Taube)
2117 * bug fix: structures defined by WITH-ALIEN can be referred to
2118 within other definitions in the same WITH-ALIEN.
2119 * bug fix: division operators (MOD, TRUNCATE and the like) with
2120 constant zero divisors and integer dividends no longer generate
2122 * bug fix: provide default methods for INPUT-STREAM-P and
2123 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2124 * bug fix: improve the detection and resolution of MOP metacycles
2125 (where effective method computation depends on the generic function
2126 having its effective method computed). (reported by Bruno Haible)
2127 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2128 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2129 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2130 * bug fix: pathnames with relative directory components can be
2131 represented relative to default pathnames.
2132 * optimization: in taking the GCD of bignums, reduce the two bignums
2133 to approximately the same size (using Euclid's algorithm) before
2134 applying the more sophisticated binary GCD. (thanks to Juho
2136 * optimization: COUNT on bitvectors now operates word-at-a-time.
2137 * optimization: ASH with a positive, but not necessarily constant,
2138 (leftwards) shift, when in a modular context, is compiled to a
2140 * fixed some bugs revealed by Paul Dietz' test suite:
2141 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2142 if the corresponding argument is NIL.
2143 ** FORMAT directives accepting a minpad parameter treat negative
2145 ** literal commas as character parameters to FORMAT directives are
2147 ** literal spaces directly after ~<Newline> directives within a
2148 format-logical-block (~:< ~@:>) do not induce :FILL-style
2149 conditional newlines.
2150 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2151 as specified: it no longer includes conditional newlines).
2152 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2154 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2155 :PER-LINE-PREFIX argument does not evaluate to a string.
2157 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2158 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2159 the manual for details; for now, package locks can be disabled by
2160 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2161 if no major problems are found then it is likely that they will be
2162 compiled in unconditionally.
2163 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2164 unsupported operators on all platforms. To load a shared library
2165 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2166 object file, link it into a shared library outside of SBCL and
2167 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2169 * bug workaround: ROOM T and the GC were not working together
2170 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2171 reporting facility aren't preserved. That reporting has been
2172 disabled, so now until and unless someone figures out how to make it
2173 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2174 * minor incompatible change: as threatened around sbcl-0.8.0, the
2175 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2176 The symbols are also exported from SB-PCL for backwards
2177 compatibility, but more so than before SB-PCL should be treated as
2178 an implementation-internal package.
2179 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2181 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2182 It is known as of this release not to work on the Alpha, however.
2183 * fixed bug #167: errors signalled due to illegal syntax in method
2184 bodies are now more legible.
2185 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2186 designators and can hence be used with TYPEP.
2187 * fixed bug #333: CHECK-TYPE now ensures that the type error
2188 signalled, if any, has the right object to be accessed by
2189 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2190 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2191 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2193 * fixed bug #334: programmatic addition of slots using specialized
2194 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2195 and :ALLOCATION :CLASS slots.
2196 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2197 float exponents. (rereported by Peter Seibel)
2198 * fixed a bug: #\Space (and other whitespace characters) are no
2199 longer considered to be macro characters in standard syntax by
2200 GET-MACRO-CHARACTER.
2201 * fixed bug: initialization of condition class metaobjects no longer
2202 causes an instance of the condition to be created. (reported by
2204 * fixed bug: it is now possible to have slots such that
2205 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2206 description is neither :INSTANCE nor :CLASS.
2207 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2208 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2209 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2210 non-standard SLOT-DEFINITION-ALLOCATION values.
2211 * fixed bugs: various race conditions handling exiting threads.
2212 CL-PPCRE's thread torture test now passes.
2213 * fixed arguably-a-bug: GC time proportional to number of threads in
2214 system even when most of them are idle
2215 * optimization: improved performance of BIT and SBIT on bit-vectors.
2216 * .fasl file incompatibility: The fasl file version number has
2217 been incremented because of changes associated with package locks.
2219 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2220 * minor incompatible change: the system no longer provides
2221 optimization hints (conditions which are TYPEP
2222 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2223 mode; these hints are still emitted when higher SPEED optimization
2225 * new contrib module: a sampling profiler (profiling by statistical
2226 sampling, rather than by instrumenting functions) is available as
2227 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2228 * the behaviour of the standard function ED is now customizeable by
2229 third parties through a hook variable: see ED's documentation
2230 string for information on the protocol.
2231 * the compiler no longer emits efficiency notes for (FUNCALL X)
2232 when the type of X is uncertain under default optimization
2234 * fixed bug 276: mutating a binding of a specialized parameter to a
2235 method to something that is not TYPEP the specializer is now
2237 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2238 exhibit the required behaviour on the x86 platform. (thanks to
2239 Peter van Eynde, Eric Marsden and Bruno Haible)
2240 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2241 even for difficult arguments. (reported by Peter Graves)
2242 * fixed bug 141a: the backquote printer now descends quoted
2244 * fixed another bug in backquote printing: no more destructive
2245 modification of the form's list structure. (reported by Brian
2247 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2248 move between its address being taken and the call to
2249 interrupt_thread, fixing a crashing race condition.
2250 * the SB-POSIX contrib implementation has been adjusted so that it
2251 no longer exhibits ridiculously poor performance when constructing
2252 instances corresponding to C structs.
2254 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2255 * minor incompatible change: the sb-grovel contrib now treats C
2256 structures as alien (in the sense of SB-ALIEN) objects rather than
2257 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2258 has implications for memory management of client code
2259 (sb-grovel-returned objects must now be manually managed) and for
2260 type safety (alien objects now have full types).
2261 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2262 used to control emission of compiler diagnostics, rather than the
2263 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2264 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2265 quality should be considered deprecated.
2266 * install.sh now installs the user manual as well
2267 * (not quite a new documentable feature, but worth considering in
2268 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2269 beginnings of a semantically meaningful condition hierarchy is
2270 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2272 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2273 designator as the defaults argument.
2274 * fixed bug: Displaced arrays whose displaced-to array has become
2275 too small now cause ARRAY-DIMENSION to signal an error, providing
2276 for safer bounds-checking. (reported by Bruno Haible)
2277 * fixed bug: DEFCLASS slot definitions with identical :READER and
2278 :WRITER names now signal a reasonable error. (reported by Thomas
2280 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2282 * fixed bug: Invalid slot specification errors now print correctly.
2283 (thanks to Zach Beane)
2284 * fixed bug 320: Shared to local slot value transfers in class
2285 redefinitions now happen corrently from superclasses as
2286 well. (reported by Bruno Haible)
2287 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2289 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2290 improper lists correctly. (reported by Bruno Haible)
2291 * fixed bug 313: source-transform for <fun-name> was erroneously
2292 applied to a call of a value of a variable with name <fun-name>.
2293 (reported by Antonio Menezes Leitao)
2294 * fixed bug 307: The obsolete instance protocol ensures that
2295 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2296 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2297 remove dead unknown-values globs from the middle of the stack.
2298 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2299 easier to resume long computations after using *BREAK-ON-SIGNALS*
2300 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2301 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2302 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2303 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2304 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2305 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2307 * fixed a (fairly theoretical) bug in string printing: if
2308 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2309 does not have array-element-type equal to the most general string
2311 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2312 function name. (thanks to Nikodemus Siivola)
2313 * fixed bug: compile-time format string checker failed on
2314 non-closed ~{. (reported by Thomas F Burdick)
2315 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2316 don't warn on legal loop code involving more than one aggregate
2317 boolean. (thanks to Nikodemus Siivola)
2318 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2319 in keyword position to MAKE-PACKAGE was not being reported as
2321 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2322 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2324 * fixed bugs 280 and 312: the checking for multiple definitions in a
2325 file is less likely to become confused by uses of inline
2327 * fixed bug: the #S reader macro performs the keyword coercion
2328 specified for slot names. (reported by Kalle Niemitalo)
2329 * fixed bug: lambda lists may contain symbols whose names start with
2330 & but are not lambda-list-keywords; their occurrence triggers a
2332 * fixed bug 321: define-method-combination argument lambda lists do
2333 not cause invalid code to be generated when &optional or &aux
2334 variables have default values. (reported by Bruno Haible)
2335 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2336 have CLOS classes; this appears also to have fixed reported
2337 instability in stack exhaustion detection.
2338 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2339 MUFFLE-WARNING when no associated restart is present is now
2341 * optimization: rearranged the expansion of various defining macros
2342 so that each expands into only one top-level form in a
2343 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2345 * optimization: used a previously little-used slot in symbols to
2346 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2348 * fixed some bugs revealed by Paul Dietz' test suite:
2349 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2351 ** Fixed an optimization bug related to inheritance of initforms
2352 from local to shared slots.
2353 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2354 ** CAST optimizer forgot to flush argument derived type.
2355 ** print/read consistency on floats is now orders of magnitude
2356 more likely. (thanks also to Bruno Haible for a similar report
2358 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2359 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2360 for objects of type REAL. Make it so.
2361 ** SXHASH is specified (infelicitously) to respect similarity,
2362 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2363 it so. (thanks to Markus Ziegler)
2364 ** on the Alpha, the compiler succeeds in compiling functions
2365 returning a known number of arguments greater than 63.
2366 ** fixed handling of invalid NIL arguments in keyword position
2368 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2370 ** provided a readably-printable representation for RANDOM-STATE
2372 ** ensured that pathnames, where they have a namestring, always
2373 print using #P"..." syntax.
2375 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2376 * Support for the forthcoming 2.0 version of the NetBSD kernel
2377 running on x86 hardware has been added. (thanks to Perry
2378 E. Metzger most immediately, and others for their past work)
2379 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2380 current release version; SBCL's OpenBSD support had been broken
2381 since about the time of OpenBSD's switch to ELF binary format.)
2382 * [placeholder for DX summary]
2383 ** user code with &REST lists declared dynamic-extent, under high
2384 speed or space and low safety and debug optimization policy.
2385 * The manual has been converted to Texinfo format and the debugger
2386 chapter from the cmucl manual has been added.
2387 * A facility has been added to extract documentation strings from
2388 sbcl and store them as Texinfo-formatted snippets for inclusion in
2389 the manual (via Texinfo's @include directive)
2390 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2391 the test case to Dave Roberts)
2392 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2393 pointers. (reported by Sean Ross)
2394 * bug fix: PROFILE output is printed nicely even for large numerical
2395 values. (thanks to Zach Beane)
2396 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2397 greater than 32 handle EOF correctly.
2398 * bug fix: on X86 an immediate argument of the IMUL instruction is
2399 correctly printed in disassembly. (thanks to Lutz Euler)
2400 * bug fix: class slots in redefined classes preserve their old
2401 values. (thanks to Bruno Haible and Nikodemus Siivola)
2402 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2403 succeeds. (reported by Marco Baringer)
2404 * fixed some bugs revealed by Paul Dietz' test suite:
2405 ** READ-SEQUENCE now works on ECHO-STREAMs.
2406 ** RATIONALIZE works more according to its specification. (thanks
2409 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2410 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2411 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2412 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2413 should matter to you only if you rebind the printer control
2414 variables and then find you want different bindings in the
2415 debugger than in the ordinary execution of your program.)
2416 * The runtime build system has been tweaked to support building
2417 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2418 assembler and linker. (thanks to Nikodemus Siivola)
2419 * Unbound, undefined, undeclared variables now trigger full
2420 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2421 more often programmer error than deliberate exploitation of undefined
2423 * optimization: the hash algorithm for strings has changed to one
2424 that is less vulnerable to spurious collisions. (thanks to Juho
2426 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2427 needless bounds checking. (thanks to Juho Snellman)
2428 * optimization: implemented multiplication as a modular
2429 (UNSIGNED-BYTE 32) operation on the PPC backend.
2430 * fixed some bugs revealed by Paul Dietz' test suite:
2431 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2433 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2434 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2435 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2437 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2439 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2441 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2442 their output stream on EOF from read.
2443 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2444 have been read to end-of-file.
2445 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2447 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2448 description of determination of which consecutive characters
2450 ** Printing the "Space" character with escaping on now yields "#\\ ",
2451 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2452 ** Reading floating-point numbers with *READ-BASE* set to a number
2453 less than 10 works correctly.
2454 ** Reading floating-point numbers with *READ-BASE* set to a number
2455 more than 10 works correctly.
2456 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2457 the readtable currently in effect.
2459 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2460 * minor incompatible change: parsing of namestrings on a physical
2461 (Unix) host has changed; numbers after the final #\. in a
2462 namestring are no longer interpreted as a version field. This is
2463 intented to be largely invisible to the user, except that the
2464 meaning of the namestring "*.*.*" has changed: it now refers to a
2465 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2466 should usually be replaced by
2467 (make-pathname :name :wild :type :wild :version :wild)
2468 with the added benefit that this is more likely to be portable.
2469 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2470 option to OPEN now signals an error if the file being opened
2471 exists; this may have an impact on existing code.
2472 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2473 signals received, on the PowerPC platforms (both Linux and
2474 Darwin). (thanks to Pierre Mai for pointing out the location of
2476 * several fixes on OS X: The system now builds and runs cleanly on
2477 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2478 (thanks to Brian Mastenbrook)
2479 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2480 second-resolution: integer multiples of 1/3600 between -24 and 24.
2481 (thanks to Vincent Arkesteijn)
2482 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2483 type when called with 1 argument; PEEK-CHAR checked type of
2484 PEEK-TYPE only after having read first character from a
2485 stream. (reported by Peter Graves)
2486 * bug fix: the garbage collector now has much better locality
2487 behaviour, and in particular no longer treats all memory as being
2488 exhausted when many small objects point to each other in a deeply
2490 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2491 recognized as being TYPEP their class.
2492 * bug fix: the PUSHNEW documentation string has been corrected.
2493 (thanks to Vincent Arkesteijn)
2494 * bug fix: defaulting of the value for the last of an atypically
2495 large number of multiple values being bound was not being
2496 performed correctly on the Alpha or PPC platforms
2497 * optimization: implemented multiplication as a modular
2498 (UNSIGNED-BYTE 32) operation on the x86 backend.
2499 * optimization: SEARCH on simple-base-strings can now be open-coded.
2500 (see also contrib/compiler-extras.lisp for inspiration for
2501 teaching the compiler about the Boyer-Moore algorithm).
2502 * value, returned by MAX (and MIN) called with several EQUALP, but
2503 not EQL, arguments now does not depend on compiler settings.
2504 * fixed some bugs revealed by Paul Dietz' test suite:
2505 ** in stack analysis liveness information is propagated from
2506 non-local entry points.
2507 ** pathwise CAST removing failed when the CAST node did not start
2509 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2510 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2512 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2513 host is already defined.
2514 ** RENAME-FILE works on streams instead of signalling an internal
2516 ** PEEK-CHAR uses the current readtable when determining whether
2517 or not a character is whitespace.
2518 ** MERGE-PATHNAMES handles the case when the pathname does not
2519 specify a name while the default-pathname specifies a version.
2520 ** Pathnames now stand a better chance of respecting print/read
2522 ** Attempting to use standardized file system operators with a
2523 pathname with invalid :DIRECTORY components signals a
2525 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2527 ** DIRECTORY on logical pathnames is more correct.
2528 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2529 signal a TYPE-ERROR if their argument is not a stream.
2530 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2531 designator argument does not designate a stream.
2532 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2533 examining the synonym.
2534 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2536 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2537 element-type larger than ([UN]SIGNED-BYTE 32).
2539 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2540 * When built with the :SB-FUTEX feature, threaded builds now take
2541 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2542 for faster/more reliable mutex and condition variable support.
2543 * Incompatible change (but one you probably shouldn't have been using
2544 anyway): the interface and code for arbitrating between multiple
2545 threads in the same user session has been redesigned.
2546 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2547 error when called without an explicit environment argument.
2548 (thanks to Nikodemus Siivola)
2549 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2550 confused about their position. (thanks to Adam Warner and Gerd
2552 * bug fix: Pretty printing backquoted forms with unquotations in the
2553 argument list position of various code constructs such as LAMBDA
2554 now works correctly. (reported by Paul Dietz)
2555 * bug fix: Pretty printing unquotations no longer loses all
2556 stream position information.
2557 * optimization: performance of string output streams is now less
2558 poor for multiple small sequence writes.
2559 * optimization: performance of CSUBTYPEP in the presence of complex
2560 expressions involving CONS and NOT many times has been improved.
2561 (reported by Paul Dietz)
2562 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2564 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2565 streams for the REPL, for the debugger, and so on. (thanks to
2567 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2568 * fixed some bugs revealed by Paul Dietz' test suite:
2569 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2570 is ignored if it is too small, rather than propagating through
2571 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2572 ** extremely complex negations of CONS types were not being
2573 sufficiently canonicalized, leading to inconsistencies in
2575 ** VALUES tranformer lost derived type.
2577 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2578 * fixed a bootstrapping bug: the build process no longer assumes
2579 that the various BOOLE-related constants have the same value in
2580 host and target lisps. (noted by Paul Dietz' test suite on an
2581 SBCL binary built from CLISP)
2582 * The system can now be dynamically linked on the MIPS platform,
2583 which enables dynamic loading of foreign code from Lisp. (thanks
2584 to Ralf Baechle for discussions on the MIPS ABI)
2585 * The system now records debugging information for its own source
2586 files in a filesystem-position-independent manner, relative to
2587 the "SYS" logical host.
2588 * fixed a compiler bug: MV-LET convertion did not check references
2589 to the "max args" entry point. (reported by Brian Downing)
2590 * tweaked disassembly notes to be less confident about proclaiming
2591 some instruction as an LRA. (thanks to Brian Downing)
2592 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2593 now each have their own history, command character, and other
2594 characteristics. (thanks to David Lichteblau)
2595 * fixed some bugs revealed by Paul Dietz' test suite:
2596 ** compiler failure in compiling LOGAND expressions including a
2598 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2599 shift greater than 32.
2600 ** FLUSH-DEST did not mark blocks for type check regeneration.
2601 ** HANDLER-CASE failed to accept declarations in handler clauses
2602 in some circumstances.
2604 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2605 * New code in contrib/sb-introspect (still probably not entirely
2606 stable yet) provides some support for smart Lisp development
2607 environments like SLIME.
2608 * The conditions signalled for errors occurring when loading .fasl
2609 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2610 in a way which should help ASDF recover gracefully.
2611 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2612 stuff has been cleaned up. If you code contrib/ stuff, this might
2613 affect you, and you can look at contrib/README, contrib/STANDARDS,
2614 and/or the 0.8.4.27 diff to check.
2615 * In full calls the compiler now does not generate checks for declared
2616 argument types for all arguments.
2617 * various threading fixes
2618 ** and some experimental patches which didn't make it into
2619 the main tree for this release, but which are shipped in
2620 contrib/experimental-thread.patch as a possible fix for some
2621 failures (deadlock, spinning...) in GC-intensive multithreaded
2623 * fixed PPC build problem (source code incompatibility of different
2624 library versions): added offsetof() hackery which attempts to divine
2625 where glibc maintainers put uc_mcontext today
2626 * fixed bug 282: compiler does not trust type assertions while passing
2627 arguments to a full call.
2628 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2629 &OPTIONAL VALUES type parameter.
2630 * fix bug 214: algorithm for noting rejected templates is now more
2631 similar to that of template seletion. (also reported by rydis on
2633 * fixed bug 141b: printing backquoted information readably and prettily
2634 inserts a space where necessary.
2635 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2636 (CHARACTER 10) are now reported as errors, rather than propagated
2637 as unknown types. (reported by piso on #lisp)
2638 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2639 with values NIL and :ERROR. (thanks to Milan Zamazal)
2640 * fixed bug 191c: CLOS now does proper keyword argument checking as
2641 described in CLHS 7.6.5 and 7.6.5.1.
2642 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2643 longer raise an error; further, using a list as a for-as-arithmetic
2644 counter now raises a meaningful error.
2645 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2646 now understood by sequence creation functions such as MAKE-SEQUENCE
2648 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2649 a STRING-INPUT-STREAM.
2650 * compiler enhancement: SIGNUM is now better able to derive the type
2652 * type declarations inside WITH-SLOTS are checked. (reported by
2654 * fixed some bugs revealed by Paul Dietz' test suite:
2655 ** incorrect optimization of TRUNCATE for a positive first
2656 argument and negative second.
2657 ** compiler failure in let-convertion during flushing dead code.
2658 ** compiler failure while deriving type of TRUNCATE on an
2659 interval, containing 0.
2660 ** ASH of a negative bignum by a negative bignum count now returns
2662 ** intersection of CONS types now canonicalizes properly, fixing
2663 inconsistencies in SUBTYPEP.
2665 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2666 * incompatible change: The --disable-debugger command line
2667 option now clobbers the debugger at a more fundamental
2668 level, by redefining #'INVOKE-DEBUGGER instead of by
2669 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2670 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2671 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2672 enter the debugger REPL and then suffer recursive errors
2673 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2674 while under the new system, BREAK in --disable-debugger mode
2675 terminates the system just as an unhandled error would.
2676 * fixed compiler performance when processing loops with a step >1;
2677 * bug fix: DOCUMENTATION now retrieves generic function
2678 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2679 support has been systematized, and now supports the methods
2680 specified by ANSI, along with a default method and a method for
2681 slot documentation. (reported by Nathan Froyd)
2682 * bug fix: effective methods associated with a generic function are
2683 no longer cached over a change of that generic function's method
2684 combination. (reported by Andreas Fuchs)
2685 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2686 names a non-existent directory. (thanks to Andreas Fuchs)
2687 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2688 the PPC platform, lead to stack corruption; this has been fixed.
2689 (reported by Rainer Joswig)
2690 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2691 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2692 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2693 arithmetic in general, is now much more reliable on the PPC
2695 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2696 platform now returns the right answer.
2697 * optimization: restored some effective method precomputation in
2698 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2699 precomputation is now tunable.
2700 * optimization: compiler-internal data structure use has been
2701 reviewed, and changes have been made that should improve the
2702 performance of the compiler by about 20%.
2703 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2704 simple-base-strings and simple-bit-vectors is improved.
2705 * optimization: the optimization of 32-bit logical and arithmetic
2706 functions introduced in version 0.8.3 on the x86 has been
2707 implemented on the mips, ppc and sparc platforms; an
2708 implementation of the same facility, but for 64-bit arithmetic,
2709 has been added for the alpha.
2710 * microoptimization: the compiler is better able to make use of the
2711 x86 LEA instruction for multiplication by constants.
2712 * bug fix: in some situations compiler did not report usage of
2713 generic arithmetic in (SPEED 3) policy.
2714 * bug 145b fix: compiler used wrong type specifier while converting
2715 MEMBER-types to numeric.
2716 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2718 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2719 index argument now works properly on the Alpha platform.
2720 * bug fix: floating point exception treatment on the Alpha platform
2722 * bug fix: FILE-POSITION works much better on string input and
2723 output streams. (thanks to Nikodemus Siivola)
2724 * bug fix: many threading/garbage collection symptoms sorted.
2725 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2726 might be pseudo-atomic.
2727 * internal change: Stopping for GC is now done with signals not
2728 ptrace. GC is now done in whichever thread wanted it, instead of
2730 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2732 * bug fix: result form in DO is not contained in the implicit
2734 * incompatible change: ICR structure is changed; the value part of
2735 CONTINUATION is now called LVAR; corresponding functions are
2736 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2737 * added type deriver for ISQRT (thanks to Robert E. Brown).
2738 * bug fix: better support for loading from the command line when an
2739 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2741 * fixed some bugs revealed by Paul Dietz' test suite:
2742 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2743 ** ROUND and FROUND now give the right answer when given very
2744 small float arguments.
2745 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2747 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2748 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2749 ** LCM should return a non-negative integer.
2750 ** PARSE-INTEGER returned the index of a terminator instead of the
2751 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2752 ** PARSE-INTEGER returned an incorrect index being applied to a
2754 ** LCM with two arguments of 0 returns 0 rather than signalling
2756 ** unsigned addition of a 32-bit constant with the high bit set no
2757 longer causes an internal compiler error on the x86.
2758 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2759 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2760 with negative last argument.
2761 ** byte specifiers with zero size and position no longer cause
2762 an error during type derivation.
2763 ** bignum multiplication on the Alpha platform now returns the
2765 * porting: The system now builds on SuSE AMD64, although it still
2766 generates a 32-bit binary.
2767 * .fasl file incompatibility: The fasl file version number has
2768 been incremented (because of the changes to internal compiler
2769 data structures referred to above).
2771 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2772 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2773 more accurately, on the Darwin kernel running on PowerPC hardware.
2774 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2775 * Compiler code deletion notes now signal a condition of type
2776 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2777 an associated MUFFLE-WARNING restart.
2778 * The compiler now performs limited argument count validation of
2779 constant format strings in FORMAT, and where appropriate in ERROR,
2780 CERROR and WARN. (thanks to Gerd Moellmann)
2781 * New ASDF-INSTALL contrib can be used for automatic download and
2782 installation of third-party Lisp code from CCLAN or other sites
2784 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2785 which forces another thread to execute a function supplied by the
2787 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2788 now accept and act upon their :ELEMENT-TYPE keyword argument.
2789 (reported by Martin Atzmueller, Edi Weitz)
2790 * bug fix: FILE-POSITION now accepts position designators up to
2791 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2792 is the greater. (thanks to Patrik Nordebo)
2793 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2794 Kalle Olavi Niemitalo)
2795 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2796 printable. (reported by Eric Marsden)
2797 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2798 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2799 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2800 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2801 (thanks to Stig Sandoe)
2802 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2803 UNREAD-CHAR now correctly includes the unread character in the
2804 target sequence. (thanks to Gerd Moellmann)
2805 * bug fix in threaded builds: the system can now be suspended and
2806 resumed by shell job control with minimal disruption.
2807 * bug fixes in times and timezones >2038AD
2808 * better handling of "where is GNU make?" problem in build scripts
2809 (thanks to Nikodemus Siivola)
2810 * new optimization: inside a named function any reference to a
2811 function with the same name is considered to be a self-reference;
2812 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2813 optimization quality.
2814 * new optimization on x86: logical functions and + now have
2815 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2816 used when the result is truncated to 32 bits.
2817 * VALUES declaration is partially enabled.
2818 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2819 * fixed some bugs revealed by Paul Dietz' test suite:
2820 ** The system now obeys the constraint imposed by
2821 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2822 types form a lattice under type intersection.
2823 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2824 ** ASSOC now ignores NIL elements in an alist.
2825 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2826 and (1+ MOST-POSITIVE-FIXNUM) answers.
2827 ** The addition of a method with invalid qualifiers to a generic
2828 function does not cause an error to be signalled immediately;
2829 a warning is signalled, and the error is generated only on
2830 calling the generic function.
2831 * changed .fasl file version number, in part to add type codes for
2832 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2833 obscure ANSI requirements
2835 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2836 * fixed bug 148: failure to inline-expand a local function left
2837 garbage, confusing the compiler.
2838 * fixed bugs 3cd: structure slot readers perform type check if the
2839 slot can have an invalid value (i.e. it is either not initialized
2840 or can be written with a less specific slot writer).
2841 * bug fix: the compiler now traps array references to elements off
2842 the end of an array; previously, the bounds checking in some
2843 circumstances could go off-by-one.
2844 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2846 * type declarations for array element types now obey the description
2847 on the CLHS page "Declaration TYPE", as per discussions on
2848 sbcl-help around 2003-05-08. This means that a declaration
2849 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2850 declaration, all references to BAR will be asserted or assumed
2851 (with THE, so dependent on compiler policy) to involve objects of
2852 type FOO. Note that no such declaration is implied in
2853 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2854 * declared types of functions from the "Conditions"
2855 chapter. (reported by Paul Dietz)
2856 * bug fix: CERROR accepts a function as its first argument.
2857 * bug fix: NTH an NTHCDR accept a bignum as index
2858 arguments. (reported by Adam Warner)
2859 * optimization: character compare routines now optimize comparing
2860 against a constant character. (reported by Gilbert Baumann)
2861 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2862 argument now works properly on the MIPS platform.
2863 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2864 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2865 declared to have a functional type, does not cause an error
2867 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2868 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2869 * fixed bug: if last continuation of a deleted block has a
2870 destination, this destination should be deleted too. (reported by
2872 * fixed a bug in the bootstrap process: the host compiler's values
2873 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2874 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2875 test case from Patrik Nordebo)
2876 * improved the ability of the disassembler on the PPC platform to
2877 provide helpful disassembly notes.
2878 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2879 the class in more cases than previously.
2880 * bug fix: FILE-POSITION now understands :START and :END for
2881 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2882 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2883 8) data. (thanks to David Lichteblau)
2884 * bug fix: it is possible to add a method to a generic function
2885 without lambda list.
2886 * bug fix: reader failed to signal END-OF-FILE inside an
2887 object representation. (reported by Nikodemus Siivola)
2888 * fixed some bugs revealed by Paul Dietz' test suite:
2889 ** LAST and [N]BUTLAST should accept a bignum.
2890 ** condition slot accessors are methods.
2891 ** (VECTOR NIL) is a subtype of STRING.
2893 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2894 * minor incompatible change: some nonsensical specialized lambda
2895 lists (used in DEFMETHOD) which were previously ignored now signal
2897 * minor incompatible change: the system is now aware of the types of
2898 variables in the COMMON-LISP package, and will signal errors for
2899 most violations of these type constraints (where previously they
2900 were silently accepted).
2901 * minor incompatible change: COMPILE-FILE now uses the freedom
2902 afforded (ANSI 3.2.2.3) to use derived function types for
2903 functions defined in the same file. This also permits the system
2904 to warn on static type mismatches and function
2905 redefinition. (Currently it does not work with high DEBUG level.)
2906 * minor incompatible change: VALUES declaration is disabled.
2907 * When issuing notes, the compiler now signals a condition of type
2908 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2909 restart for use in user handlers. It is expected that the
2910 COMPILER-NOTE condition will eventually become a condition
2911 supertype to a hierarchy of note types, which will then be
2912 handleable in a similar fashion. However, at the moment, no such
2913 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2914 but it's an implementation detail, not a classification for the
2916 * Changes in type checking closed the following bugs:
2917 ** type checking of unused values (192b, 194d, 203);
2918 ** template selection based on unsafe type assertions (192c, 236);
2919 ** type checking in branches (194bc).
2920 * A short form of VALUES type specifier has ANSI meaning (it has
2921 increased the number of situations when SBCL cannot perform type
2923 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2924 keywords or constants is permissible.
2925 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2926 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2927 classes. (thanks to Antonio Martinez)
2928 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2929 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2930 argument to a pretty-print stream. Instead, it leaves any such
2931 operations to DESCRIBE-OBJECT methods.
2932 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2934 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2935 lambda lists. (thanks to David Lichteblau)
2936 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2937 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2938 (thanks to Gerd Moellmann)
2939 * fixed bug 246: increased compilation speed of long
2940 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2942 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2944 * DEFCONSTANT now throws a condition of type
2945 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2946 constant to a non-EQL value; CONTINUE and ABORT restarts
2947 respectively change and preserve the value.
2948 * fixed bug 63: The code walker, part of the implementation of CLOS,
2949 is now better at handling symbol macros.
2950 * bug fix: There is no longer an internal implementation type named
2951 CL:LENGTH. (reported by Raymond Toy)
2952 * bug fix: In macro-like defining macros/special operators the
2953 implicit block does not enclose the lambda list.
2954 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2955 enclosed in parentheses) are not suitable as type specifiers, and
2956 their use properly signals an error now.
2957 * bug fix: An argument count mismatch for a type specifier in code
2958 being compiled no longer causes an unhandled error at compile
2959 time, but signals a compile-time warning.
2960 * fixed simple vector readable printing
2961 * bug fix: DESCRIBE takes more care over whether the class
2962 precedence list slot of a class is bound before accessing it.
2963 (reported by Markus Krummenacker)
2964 * bug fix: FORMATTER can successfully compile pretty-printer format
2965 strings which use variants of the ~* directive inside.
2966 * bug fix: SEARCH now applies its TEST predicate to the elements of
2967 the arguments in the correct order. (thanks to Wolfhard Buss)
2968 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2969 in type inference. (thanks to Robert E. Brown)
2970 * bug fix: Reading in symbols with an explicit package name of ""
2971 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2972 * fixed some bugs revealed by Paul Dietz' test suite:
2973 ** NIL is now allowed as a structure slot name.
2974 ** Arbitrary numbers, not just REALs, are allowed in certain
2975 circumstances in LOOP for-as-arithmetic clauses.
2976 ** Multiple class redefinitions before slot access no longer
2977 causes a type error.
2978 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2979 association between the name and a class.
2980 ** Generic functions with non-standard method-combination and over
2981 five methods all of which return constants no longer return NIL
2982 after the first few invocations. (thanks to Gerd Moellmann)
2983 ** CALL-NEXT-METHOD with no arguments now passes the original
2984 values of the arguments, even in the presence of assignment.
2985 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2987 ** DISASSEMBLE works with closures and funcallable instances.
2988 ** ADD-METHOD now returns the generic function, not the new method.
2989 ** FIND-METHOD signals an error if the lengths of the specializers
2990 is incompatible with the generic function, even if the ERRORP
2992 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2993 which its argument is a member.
2994 ** DEFCLASS only redefines the class named by its class-name
2995 argument if that name is the proper name of the class;
2996 otherwise, it creates a new class.
2997 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2998 of the UNBOUND-SLOT condition to the name of the slot.
2999 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3000 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3001 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3002 SLOT-MAKUNBOUND in the specified fashion.
3004 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3005 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3006 cross-compilation host. As a consequence, we can now bootstrap our
3007 way up to SBCL starting with a bare gcc toolchain and human-readable
3008 source code (first the source to CLISP, then the source to SBCL).
3009 * A contributed module containing a partial implementation of the
3010 simple-streams interface has been included. (thanks to Rudi
3012 * A contributed module implementing the RFC1321 Message Digest
3013 Algorithm, known as MD5, has been included.
3014 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3015 no longer has any effect, as the code controlled by this feature
3016 has been deleted. (As far as we know, no-one has ever built using
3017 this feature, and its semantics were confused in any case).
3018 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3019 work on conditions (as required by the ANSI specification),
3020 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3021 expected behaviour on conditions. Users should note, however,
3022 that such behaviour is not required by the ANSI specification,
3023 and so use of this behaviour may render their code unportable.
3024 * fixed some bugs revealed by Paul Dietz' test suite:
3025 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3027 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3028 ** SXHASH on condition objects no longer returns NIL.
3029 ** :ALLOCATION :CLASS slots are better treated; their values are
3030 updated on class redefinition, and initforms inherited from
3031 superclasses are applied.
3032 ** REMOVE-METHOD returns its generic function argument even when
3033 no method was removed.
3034 ** SHARED-INITIALIZE now initializes the values of the requested
3035 slots, including those with :ALLOCATION :CLASS.
3036 ** ALLOCATE-INSTANCE now works on structure classes defined via
3037 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3039 ** SLOT-EXISTS-P now works on conditions, as well as structures
3041 ** MAKE-LOAD-FORM now has the required methods on
3042 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3043 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3044 keyword, and now implements the SLOT-NAMES argument.
3045 ** methods with &OPTIONAL arguments no longer allow too many
3046 arguments to be passed in the call without error.
3047 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3048 option is consistent with the required arguments of the generic
3049 function lambda list.
3050 * bug fix: REQUIRE accepts a string designator. (Thanks to
3052 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3053 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3054 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3055 * bug fix: The compiler now checks for duplicated variables in macro
3057 * bug fix: SETQ on globals returns the correct value.
3058 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3059 not a COMPILER-ERROR (followed by some other strange error on
3060 choosing the CONTINUE restart).
3061 * bug fix: make.sh and friends are now more consistent in the way that
3062 they look for GNU "make".
3064 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3065 * experimental native threads support (on x86 Linux >=2.4 only).
3066 This is not compiled in by default: you need to add :SB-THREAD to
3067 the target features. See the "Beyond ANSI" chapter of the manual
3069 * fix for longstanding nonANSIism: The old distinction between
3070 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3071 The return value from CL:FIND-CLASS is now a CLOS class, and
3072 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3073 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3074 * An interface to the MetaObject Protocol, as described in Kiczales,
3075 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3076 MIT Press, 1991, is available from the SB-MOP package.
3077 * incompatible change: the SB-PCL package should now be considered
3078 a private implementation detail, and no longer a semi-private MOP
3080 * minor incompatible change: due to rearrangement for threads, the
3081 control stack and binding stack are now allocated at arbitrary
3082 addresses instead of being hardcoded per-port. Users affected by
3083 this probably have to be doing advanced things with shared
3084 libraries, and will know who they are.
3085 * minor incompatible change: Previously, all --eval forms used were
3086 processed with READ before any of them were processed with EVAL.
3087 Now each --eval form is processed with both READ and EVAL before
3088 the next --eval form is processed. (Thus package operations like
3089 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3090 work as the user might reasonably expect.)
3091 * minor incompatible change: *STANDARD-INPUT* is now only an
3092 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3094 * minor incompatible change: Y-OR-N-P is now character-oriented,
3095 not line oriented. Also, YES-OR-NO-P now works without errors.
3096 (thanks to Antonio Martinez)
3097 * sb-aclrepl module improvements: an integrated inspector, added
3098 repl features, and a bug fix to :trace command.
3099 * Known functions, which cannot be open coded by the backend, are
3100 considered to be able to check types of their arguments. (fixing
3101 a bug report by Nathan J. Froyd)
3102 * fixed a bug in computing method discriminating functions: It is
3103 now possible to define methods specialized on classes which have
3104 forward-referenced superclasses. (thanks to Gerd Moellmann)
3105 * fixed evaluation order in optional entries (reported by Gilbert
3107 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3108 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3109 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3110 required-by-AMOP NAME argument, as well as CLASS and
3111 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3112 * fixed bug 20: DEFMETHOD can define methods using names that are
3113 not the proper names of classes to designate class specializers.
3114 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3115 Unix file descriptors, instead of blowing up. (thanks to Antonio
3117 * Garbage collection refactoring: user-visible change is that a
3118 call to the GC function during WITHOUT-GCING will not do garbage
3119 collection until the end of the WITHOUT-GCING. If you were doing
3120 this you were probably losing anyway.
3121 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3122 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3123 TYPEP the latter but not the former.
3124 * The compiler issues a full WARNING for calls to undefined functions
3125 with names from the CL package.
3126 * MAP-INTO for a vector destination is open coded. (reported by
3127 Brian Downing on c.l.l)
3128 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3129 documentation string.
3130 * fixed some bugs revealed by Paul Dietz' test suite:
3131 ** COPY-ALIST now signals an error if its argument is a dotted
3133 ** Condition slots are now accessed more correctly in the presence
3134 of multiple initargs for a given slot.
3135 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3136 exclude restarts of the same name associated with a different
3138 ** DEFCLASS of forward-referenced classes with another
3139 forward-referenced class in the superclasses list no longer
3141 ** Condition slots are now initialized once each, not multiple
3142 times. (thanks to Gerd Moellmann)
3143 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3145 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3146 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3147 arguments contain duplicated elements.
3148 ** RESTART-CASE understands local macros.
3149 ** RESTART-CASE associates exactly its own restarts with a condition.
3150 ** ENDP in safe mode checks its argument to be of type LIST.
3151 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3152 in question is unbound.
3153 ** Optimized MAKE-INSTANCE functions no longer cause internal
3154 assertion failures in the presence of duplicate initargs.
3155 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3156 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3157 propagated even in the ctor optimized implementation of
3159 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3161 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3162 * a better implementation of SXHASH on (simple) bit vectors,
3163 measured both in execution speed and in distribution of results
3164 over the positive fixnums, has been installed. Likewise, a better
3165 implementation of EQUAL for simple bit vectors is now available.
3166 * fixed CEILING optimization for a divisor of form 2^k.
3167 * fixed bug 240 (emitting extra style warnings "using the lexical
3168 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3169 by Antonio Martinez)
3170 * fixed SXHASH, giving different results for NIL depending on type
3171 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3172 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3173 variable. (found by Rolf Wester)
3174 * SBCL does not ignore type declarations for special
3175 variables. (reported by rif on c.l.l 2003-03-05)
3176 * some bug fixes in contrib/sb-aclrepl/
3177 * fixed some bugs revealed by Paul Dietz' test suite:
3178 ** a bug in the CONS type specifier, whereby the CAR and CDR
3179 types got intertwined, has been fixed;
3180 ** the type system is now able to reason about the interaction
3181 between INTEGER and RATIO types more completely;
3182 ** APPEND, [N]REVERSE and NRECONC check that those their
3183 arguments, which must be proper lists, are really so;
3184 ** An array specialized to be unable to hold elements has been
3185 implemented, as required -- yes, really -- by ANSI;
3186 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3187 on malformed property lists;
3189 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3190 * incompatible packaging change: in line with Unix convention,
3191 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3192 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3193 * REQUIRE and PROVIDE are now optionally capable of doing something
3194 useful. See the documentation string for REQUIRE.
3195 * infrastructure for a managed SBCL contrib system: contributed
3196 modules in this release include:
3197 ** the ASDF system definition facility;
3198 ** an interface to the BSD Sockets API;
3199 ** an ACL-like convenience interface to the repl;
3200 (thanks to Kevin Rosenberg)
3201 ** an implementation of ROTATE-BYTE, with efficient implementation
3203 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3204 gives a closer approximation to the right answer than previously.
3205 (thanks to Raymond Toy)
3206 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3207 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3208 optional environment arguments, as required by ANSI.
3209 * fixed bugs in other functions taking environment objects, allowing
3210 calls with an explicit NIL environment argument to be compiled
3212 * fixed bug 228: primary return values from
3213 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3214 COMPILE or FUNCTION.
3215 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3216 :TYPE will no longer signal errors on innocuous objects.
3217 * fixed bug 231b: SETQ is better at respecting type declarations in
3218 the lexical environment.
3219 * fixed a bug in DEFCLASS: classes named by symbols with no or
3220 unprintable packages can now be defined.
3221 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3222 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3223 * fixed compiler failure related to checking types of functions.
3224 (reported by Robert E. Brown)
3225 * the compiler is now much more consistent in its error-checking
3226 treatment of bounding index arguments to sequence functions: in
3227 (SAFETY 3) code, errors will be signalled in almost all cases if
3228 invalid sequence bounding indices are passed to functions defined
3229 by ANSI to operate on sequences.
3230 * fixed a bug in the build procedure: documentation of SBCL-specific
3231 packages is now preserved and available in the final Lisp image.
3232 * lifted FDEFINITION lookup out of loops in the implementation of
3233 many list operations. (thanks to Robert E. Brown)
3234 * fixed a bug in the reader: the #n# reader macro now works for
3235 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3236 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3237 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3238 E. Brown and Tony Martinez respectively)
3239 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3240 SLOT-BOUNDP: in particular, it is now able to optimize them much
3241 better, and is now not vulnerable to having packages renamed.
3242 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3243 always called when a slot is not present in an instance. (thanks
3245 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3246 longer signal an error on unreading a character following EOF on
3247 the previous constituent stream. (thanks to Tony Martinez)
3248 * fixed some bugs revealed by Paul Dietz' test suite:
3249 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3250 not just nonnegative fixnums;
3251 ** the logical bit-array operators such as BIT-AND now accept an
3252 explicit NIL for their "opt-arg" argument (to indicate a
3253 freshly-consed result bit-array);
3254 ** ELT now signals an error on an invalid sequence index in safe
3256 ** the type system is now cleverer about negations of numeric
3257 types, and consequently understands the BIGNUM and RATIO types
3259 ** the type system is now cleverer about the interaction between
3260 INTEGER and RATIO types: while bugs still remain, many more
3261 cases are accurately computed;
3262 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3263 if it is in the last clause;
3264 ** CONSTANTLY now correctly returns a side-effect-free function in
3266 ** DECLARE is no longer treated as a special-operator; in
3267 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3268 * incremented fasl file version number due to the change in the
3269 DEFSTRUCT-SLOT-DESCRIPTION structure.
3271 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3272 * minor incompatible change: code processed by the "interpreter" or
3273 EVAL now has a compilation optimization policy of (DEBUG 2)
3274 (changed from (DEBUG 1)) to improve debuggability of interactive
3275 development, and to allow the use of the debug RETURN command in
3277 * an experimental implementation of the RETURN command for the
3278 debugger has been included. (thanks to Frederik Kuivinen)
3279 * fixed bug 62: constraints were not propagated into a loop.
3280 * fixed bug in embedded calls of SORT (reported and investigated by
3282 * fixed some bugs revealed by Paul Dietz' test suite:
3283 ** printing and reading of arrays with some dimensions having
3284 length 0 (thanks to Gerd Moellmann);
3285 ** BOA constructor with &AUX argument without a default value does
3286 not cause a type error;
3287 ** CONSTANTP now returns true for all self-evaluating objects.
3289 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3290 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3291 accessors that are related by inheritance, as specified in the
3292 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3293 Valtteri Vuorikoski)
3294 * The compiler is now able to inline functions that were defined in
3295 a complex lexical environment (e.g. inside a MACROLET).
3296 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3298 * Support for the upcoming FreeBSD-5.0 release has been included.
3299 (thanks to Dag-Erling Smorgrav)
3300 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3301 effect when it is not in a toplevel context.
3302 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3303 stand a better chance of being correct. (thanks to Gerd
3305 * fixed bug in COERCE, which now signals an error on coercing a
3306 rational to a bounded real type which excludes the expected
3308 * The compiler is now able to derive types more accurately from the
3309 COERCE and COMPILE functions.
3310 * fixed bug 223: functional binding is considered to be constant
3311 only for symbols in the CL package.
3312 * fixed bug 231: SETQ did not check the type of a variable being set
3313 (reported by Robert E. Brown)
3314 * A new optimization for MAKE-INSTANCE has been included, fixing
3315 various bugs (including relating to :ALLOCATION :CLASS slots and
3316 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3318 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3319 ** As required by ANSI, LOOP now disallows anonymous collection
3320 clauses such as COLLECT I in conjunction with aggregate boolean
3321 clauses such as THEREIS (= I 1);
3322 ** LOOP now signals an error when any variable is reused in the
3323 same loop (including the potentially useful construct analogous
3324 to WITH A = 1 WITH A = (1+ A);
3325 ** IT is only a special loop symbol within the first clause of a
3326 conditional loop clause;
3327 ** LOOP with a typed iteration variable over a hashtable now
3328 signals a type error iff it should.
3329 * fixed some other bugs revealed by Paul Dietz' test suite:
3330 ** FILE-STREAM now names the class previously known as FD-STREAM;
3331 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3332 argument) no longer signals an error;
3333 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3334 of the slot symbol, rather than using the current package
3335 ((:CONC-NAME "") continues to intern the slot's name in the
3337 * incremented fasl file version number, because of the incompatible
3338 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3339 of the new implementation of DEFINE-COMPILER-MACRO.
3341 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3342 * Support for building SBCL for MIPS platforms running in
3343 little-endian mode has now been checked in, and basic
3344 functionality on said platforms verified.
3345 * minor incompatible change: PCL now records the pathname of a file
3346 in which methods and the like are defined, rather than its
3348 * minor incompatible change: TRUENAME now considers the truename of
3349 a file naming a directory to be the pathname with :DIRECTORY
3350 component indicating that directory.
3351 * minor incompatible change: a NAMED clause in the extended form of
3352 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3353 reason for the previous behaviour is unclear.
3354 * more systematization and improvement of CLOS and MOP conformance
3355 in PCL (thanks to Gerd Moellman and Pierre Mai):
3356 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3358 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3359 primary methods with no specializers;
3360 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3362 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3363 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3364 FORWARD-REFERENCED-CLASSes; error reporting on
3365 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3367 ** SXHASH on CLOS instances now uses a slot internal to the
3368 instance to return different numbers on distinct instances,
3369 while preserving the same return value through invocations of
3371 ** DEFMETHOD signals errors when methods with longer incongruent
3372 lambda lists are added to generic functions;
3373 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3374 CLASS, as specified in AMOP;
3375 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3376 on the order returned by the primary method for classes of
3377 class STANDARD-CLASS;
3378 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3379 * fixed some bugs shown by Paul Dietz' test suite:
3380 ** DOLIST puts its body in TAGBODY;
3381 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3383 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3384 value producing form;
3385 ** if more variables are given to PROGV than values, extra
3386 variables are bound and made to have no value;
3387 ** NSUBSTITUTE on list arguments gets the right answer with
3389 ** ELT signals an error of type TYPE-ERROR when the index argument
3390 is not a valid sequence index;
3391 ** LOOP signals (at macroexpansion time) an error of type
3392 PROGRAM-ERROR when duplicate variable names are found;
3393 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3394 ** FUNCALL of special-operators now cause an error of type
3396 ** PSETQ now works as required in the presence of side-effecting
3397 symbol-macro places;
3398 ** NCONC accepts any object as its last argument;
3399 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3401 ** loop-for-as-package does not require a package to be explicitely
3403 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3405 * fixed bug 166: compiler preserves "there is a way to go"
3406 invariant when deleting code.
3407 * fixed bug 172: macro lambda lists with required arguments after
3408 &REST arguments now cause an error to be signalled. (thanks to
3410 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3411 bug. (thanks to Matthew Danish)
3412 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3414 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3415 arguments are lexically rebound. (thanks to Gerd Moellmann and
3417 * fixed bug 194: error messages are now more informative when there
3418 is no primary method applicable in a call to a generic
3419 function. (thanks to Gerd Moellmann)
3420 * fixed bug in command line argument checking (thanks to Julian
3422 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3423 (thanks to Matthew Danish)
3424 * incremented fasl file version number, because of the
3425 SXHASH-related changes in the layout of CLOS data structures
3427 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3428 * minor incompatible change: The runtime (the Unix executable named
3429 "sbcl") is now much pickier about the .core files it will load.
3430 Essentially it now requires .core files to descend from the same
3431 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3432 as the runtime does. (The intent is to prevent the crashes which
3433 can occur, and which can even be reported as mysterious failures,
3434 when people patch the sources or change the build parameters
3435 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3436 sbcl and .core files.)
3437 * fixed bug: VALUES-LIST is no longer optimized away.
3438 * fixed bug 142: The FFI conversion of C string values to Lisp
3439 string values no longer conses excessively. (thanks to Nathan
3440 Froyd porting Raymond Toy's fix to CMU CL)
3441 * began to systematize and improve MOP conformance in PCL (thanks to
3442 Nathan Froyd, Gerd Moellman and Pierre Mai):
3443 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3445 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3446 ** FINALIZE-INHERITANCE is now called on class finalization;
3447 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3448 argument precedence order.
3449 * fixed bug 202: The compiler no longer fails on functions whose
3450 derived types contradict their declared type.
3451 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3452 so it can be non-toplevel.
3453 * The fasl file version number has changed (because of the new
3454 implementation of DEFMACRO).
3455 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3456 safe code, that any length requirement by their type-specifier
3457 argument is valid. The exceptions to this are described in bug
3459 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3460 functions now check the types of their inputs as required by ANSI.
3461 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3462 introduced symbol is DECLAREd to be SPECIAL.
3463 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3464 * fixed bug: :COUNT argument to sequence functions may be negative
3465 * fixed bug: body of DO-SYMBOLS may contain declarations
3466 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3467 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3468 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3469 symbol macro only once
3470 * fixed printing of call frame when argument list is unavailable
3471 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3472 * compiler no longer signals WARNING on unknown keyword
3475 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3476 * A beta-quality port to the mips architecture running Linux,
3477 based on the old CMUCL backend, has been made. It has been tested
3478 on a big-endian kernel, and works sufficiently well to be able to
3479 rebuild itself; it has not been tested in little-endian mode.
3480 * fixed an inconsistency between gencgc.c and purify.c which made
3481 dumping/loading .core files unreliable
3482 * fixed bug 120a: The compiler now deals correctly with IFs where
3483 the consequent is the same as the alternative, instead of
3484 misderiving the return type. (thanks to Alexey Dejneka)
3485 * fixed bug 113: Logical pathnames are now dumpable (the logical
3486 host is resolved at load-time, throwing an error if it is not
3488 * fixed bug 174: FORMAT's error message is slightly clearer when a
3489 non-printing character is used in a format directive.
3490 * fixed several bugs in compiler checking of type declarations, i.e.
3491 violations of the Python "declarations are assertions" principle
3492 (thanks to Alexey Dejneka)
3493 * fixed several bugs in PCL's error checking (thanks to Gerd
3495 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3497 * fixed bug in compilation of functions as first class values
3498 (thanks to Antonio Martinez-Shotton)
3499 * The compiler's handling TYPE-ERRORs which it can prove will
3500 inevitably happen at runtime has been cleaned up and corrected
3501 in several ways. (thanks to Alexey Dejneka)
3502 * improved argument type checking for various basic arithmetic
3503 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3504 lavished on them in the past that they can be compiled in many
3505 ways in different special cases
3506 * fixed bug 181: compiler checks validity of user supplied type
3508 * cleaned up code flushing in optimization: Function calls which
3509 should signal errors for safety purposes (e.g. which ANSI says
3510 should signal errors when their arguments are of incorrect type)
3511 are no longer optimized away.
3512 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3513 * incremented fasl file version number, because changes in the
3514 implementation of sequence functions like COERCE caused
3515 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3516 in old inline expansions) to become undefined. (Actually these
3517 changes were later undone, so we might very well be binary
3518 compatible with 0.7.7 after all, but leaving the version number
3519 incremented seemed like the simplest and most conservative
3522 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3523 * An alpha-quality port to the parisc architecture running Linux,
3524 based on the old CMUCL backend, has been made. This, even more so
3525 than the other backends, should be considered still a work in
3526 progress; known problems include that the Linux kernel in 64-bit
3527 mode does not propagate the correct sigcontext structure to
3528 userspace, and consequently SBCL on a parisc64 kernel will not
3530 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3531 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3532 suppressed.) Also now that the compiler is looking at declarations
3533 in the environment, it checks optimization declarations as well,
3534 and suppresses inlining when (> DEBUG SPEED).
3535 * More fixes have been made to treatment of floating point exception
3536 treatment and other Unix signals. In particular, floating point
3537 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3538 * The detection and handling of control stack exhaustion (infinite
3539 or very deeply nested recursion) has changed. Stack exhaustion
3540 detection is now done by write-protecting pages at the OS level
3541 and applies at all optimization settings; when found, a
3542 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3543 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3544 be caught using IGNORE-ERRORS.
3545 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3546 correctly when transforming recursive LABELS functions to LETs.
3547 (thanks to Alexey Dejneka)
3548 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3549 that are names of constants or global variables.
3550 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3551 alien routines with docstrings.
3552 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3553 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3555 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3556 (thanks to Eric Marsden)
3557 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3558 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3559 * Bug fix: The SPARC backend can now compile functions involving
3560 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3561 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3562 to a functions expecting a PATHNAME-DESIGNATOR.
3563 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3564 lambda lists. (thanks to Alexey Dejneka)
3565 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3566 functions so that EXPORTing the name of the class doesn't cause
3567 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3568 to Antonio Martinez for reporting this)
3569 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3570 constant-folded without failing an assertion. (thanks to Einar
3571 Floystad Dorum for reporting this)
3572 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3573 types are now dealt with more correctly by the compiler.
3574 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3575 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3576 behaviour analogous to RENAME-FILE. This puts its behaviour more
3577 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3579 * The fasl file version number has changed again. (because of the
3580 bug fix involving the names of PCL MAKE-INSTANCE functions)
3582 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3583 * bug fix: Floating point exceptions are treated much more
3584 consistently on the x86/Linux and PPC/Linux platforms.
3585 * Array initialization with :INITIAL-ELEMENT is now much faster for
3586 cases when the compiler cannot open code the array creation, but
3587 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3588 array accesses have also seen a speed increase.
3589 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3590 specified. (This was at the root of some bad interactions between
3591 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3593 * bug fix: Internal error arguments for undefined functions are now
3594 computed correctly on the PPC/Linux platform.
3595 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3596 Raymond Toy's patch for CMU CL)
3597 * Support for the Solaris 9 operating environment has been included
3598 (thanks to Daniel Merritt)
3599 * A very ugly but hopefully complete draft of the missing FFI chapter
3600 of the manual has been created by reformatting the corresponding
3601 CMU CL manual chapter into (currently very ugly and incoherent)
3602 DocBook and bringing it up to date for SBCL behavior. Thus, the
3603 manual is now essentially complete, at least by my extreme
3604 once-and-only-once standards, whereby it's acceptable to refer to
3605 the doc strings of SB-EXT functions as the primary documentation.
3606 * The fasl file version number has changed again, due to cleanup of
3607 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3608 is no longer a static symbol.)
3610 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3611 * SBCL now builds with OpenMCL (version 0.12) as the
3612 cross-compilation host; also, more progress has been made toward
3613 bootstrapping under CLISP.
3614 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3616 * bug 158 fixed: The compiler can now deal with integer loop
3617 increments different from 1; fixing this turned out also to fix
3619 * bug 169 fixed: no more bogus warnings about using lexical bindings
3620 despite the presence of perfectly good SPECIAL declarations (thanks
3621 to David Lichteblau)
3622 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3623 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3624 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3626 * bug 180 fixed: Method combination specifications no longer ignore
3627 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3628 * bug fix: Structure type predicate functions now check their argument
3629 count as they should.
3630 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3631 correctly. (thanks to Pierre Mai)
3632 * minor incompatible change: The --noprogrammer option is deprecated
3633 in favor of the new --disable-debugger option, which is very similar.
3634 (The major difference is that it takes effect at a slightly different
3635 time at startup, causing handling of errors in --sysinit and
3636 --userinit files will be affected differently.) The
3637 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3638 been added to allow this functionality to be controlled from ordinary
3639 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3640 maintainers, who might want to run non-interactive scripts to
3641 build SBCL cores which will later be used interactively.)
3642 * minor incompatible change: The LOAD function no longer, when given
3643 a wild pathname to load, loads all files matching that pathname.
3644 Instead, an error of type FILE-ERROR is signalled.
3646 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3647 * bug 147 fixed: The compiler preserves its block link/count
3648 invariants more correctly now so that it doesn't crash. (thanks
3650 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3652 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3653 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3654 no-value-for-this-character as NIL (as specified by ANSI).
3655 * HOST-NAMESTRING on physical pathnames now returns a string that is
3656 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3657 (thanks to Christophe Rhodes)
3658 * The Alpha port handles icache flushing more correctly. (thanks to
3660 * More progress has been made toward bootstrapping under CLISP. (thanks
3661 to Christophe Rhodes)
3662 * The fasl file format has changed again, because dynamic loading
3663 on OpenBSD (which has non-ELF object files) motivated some cleanups
3664 in the way that foreign symbols are transformed and passed around.
3665 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3666 is no longer treated as whitespace by the reader, but instead as
3667 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3668 |A
\7fB|, instead of A as it used to.
3670 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3671 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3672 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3673 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3674 this as of 0.7.1.45, but was left out of the previous news section
3675 (thanks to Dan Barlow)
3676 * SBCL now runs on the Solaris operating system on SPARC architectures
3677 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3678 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3679 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3680 * SPARC backend cleanups, allowing builds of cores optimized for V8
3681 and V9 SPARCS, and also emission of code targeted to a particular
3682 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3684 * SBCL is closer to bootstrapping under CLISP, thanks to various
3685 fixes by Christophe Rhodes.
3686 * The fasl file format has changed again, to allow the compiler's
3687 INFO database to support symbol macros.
3688 * The user manual (in doc/) is formatted into HTML more nicely.
3689 (thanks to coreythomas)
3690 * The system is smarter about SUBTYPEP relationships, especially
3691 those involving NOT types (including types such as ATOM which are
3692 represented internally using NOT types). Thus SUBTYPEP is less
3693 likely to return (VALUES NIL NIL) in general, and in particular
3694 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3696 * The fasl file format has changed again, because the internal
3697 representation of types now includes a new slot to support the new
3698 SUBTYPEP-of-NOT-types logic.
3699 * (not a change in the main branch of SBCL, but a related prototype
3700 which can hopefully be merged into the main branch of SBCL in the
3701 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3702 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3703 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3704 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3705 dispatch macro character combinations. (thanks to Alexey Dejneka)
3706 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3707 that superficially look like logical namestrings correctly.
3708 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3710 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3711 default supplied-p) for &optional and &key arguments. (thanks to
3714 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3715 * incompatible change: The compiler is now less aggressive about
3716 tail call optimization, doing it only when (> SPACE DEBUG) or
3717 (> SPEED DEBUG). (This is an incompatible change because there are
3718 programs which relied on the old CMU-CL-style behavior to optimize
3719 away their unbounded recursion which will now die of stack overflow.)
3720 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3721 for non-GENCGC systems has been increased to 20M (since that
3722 seems much closer to the likely performance optimum for modern
3723 systems than the old 4M value was)
3724 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3725 and *DEBUG-PRINT-LEVEL*
3726 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3727 of CMU CL's support for SPARC, and various endianness and other
3728 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3729 * new syntactic sugar for the Unix command line: --load foo.bar is now
3730 an alternate notation for --eval '(load "foo.bar")'.
3732 ** The system now detects stack overflow and handles it gracefully,
3733 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3734 optimization settings. (This is a good thing in general, and
3735 its introduction in this version should be particularly timely
3736 for anyone whose code fails because of suppression of tail
3738 ** The system now hunts for the C variable "environ" in a more
3739 devious way, to avoid segfaults when the C library version differs
3740 between compile time and run time. (thanks to Christophe Rhodes)
3741 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3742 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3743 ** The compiler no longer issues bogus style warnings for undefined
3744 classes in the same source file as the DEFCLASSes which defined
3745 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3747 ** fixes in CONDITION class precedence list for undefined function
3748 errors (thanks to Alexei Dejneka)
3749 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3750 correctly. (thanks to Dan Barlow)
3751 ** portability fixes aiming at bootstrapping under CLISP (thanks
3752 to Dave McDonald and Christophe Rhodes)
3753 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3754 ** fixes in type translation and and type inference (thanks to
3756 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3757 ** various fixes in the new ports (thanks to Dan Barlow)
3758 * several changes related to debugging:
3759 ** suppression of tail recursion, as noted above
3760 ** stack overflow detection, as noted above
3761 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3762 is now the default. (For some time encapsulation has been more
3763 reliable than the breakpoint-based :ENCAPSULATE NIL
3764 implementation, at least on X86 systems; and I just noticed that
3765 encapsulation also seems closer to the spirit of the ANSI
3768 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3770 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3771 up properly again. (There was a packaging bug in 0.7.0 which
3772 left their definitions in SB-SYS::LOAD-FOREIGN and
3773 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3774 vital for most things which interface to C-level interfaces,
3775 like extensions working with sockets or databases or
3776 Perl-compatible regexes or whatever, and the need to fix
3777 this bug is the main reason that 0.7.1 was released so
3779 ** DEFGENERIC is now choosier about the methods it redefines, so that
3780 reLOADing a previously-LOADed file containing DEFGENERICs does
3781 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3782 cycle now works as it should. (thanks to Alexey Dejneka)
3783 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3784 fixed by Christophe Rhodes. (He actually submitted this patch
3785 months ago, and I delayed until after 0.7.0.)
3786 ** Bug 111 (internal compiler confusion about runtime checks on
3787 FUNCTION types) was fixed by Alexey Dejneka.
3788 * Some internal cleanups (getting rid of variables which aren't
3789 needed now that the byte interpreter is gone) caused the fasl
3790 file format number to change again.
3792 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3793 * major incompatible change: The default fasl file extension, i.e. the
3794 default extension for files produced by COMPILE-FILE, has changed
3795 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3797 ** There are many changes in the implementation of the compiler.
3798 SBCL is now essentially a compiler-only implementation of ANSI
3799 Common Lisp. EVAL still "interprets" a few special cases, but
3800 almost all the interesting cases are handled by creating
3801 a LAMBDA expression, calling COMPILE on it, then calling
3802 FUNCALL on the result.
3803 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3804 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3805 Since the code is newer, there might still be some new bugs
3806 (though not as many as before Martin Atzmueller's fixes:-). But
3807 the new code is substantially simpler and clearer, and hopefully
3808 any remaining bugs will be simpler, less fundamental, and more
3809 fixable then the bugs in the old code.
3810 ** The revised compiler is still a little unsteady on its feet.
3812 *** The debugging information it produces (particularly the names
3813 of FUNCTION objects) is sometimes much less useful than what
3814 the old compiler produced.
3815 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3816 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3817 within a MACROLET) has been temporarily weakened.
3818 ** There are new compiler optimizations for various functions:
3819 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3820 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3821 *** the math functions TRUNCATE, FLOOR, and CEILING
3822 *** the function-of-all-trades COERCE
3823 Mostly these should be transparent, but there's one
3824 potentially-annoying problem (bug 117): when the compiler
3825 inline-expands a function and does type analysis on the result,
3826 it can create control paths which have type mismatches, and
3827 when it can't prove that those control paths aren't taken,
3828 it will issue WARNINGs about the type mismatches. This is
3829 a particular problem in practice for the new sequence functions.
3830 It's not clear how this should be fixed, and for now, a
3831 workaround is given in the entry for 117 in the BUGS file.
3832 ** (Because of the interaction between the two previous items --
3833 occasional inlining problems and new inline expansions -- some
3834 of the new sequence function optimizations won't really kick in
3835 completely until debugging information, and then inlining, are
3836 straightened out in some future version.)
3837 * minor incompatible changes:
3838 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3839 DIRECTORY no longer implicitly promotes NIL slots of its
3840 pathname argument to :WILD. In particular, when you ask for the
3841 contents of a directory (which you used to be able to do without
3842 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3843 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3844 ** changes in behavior that ANSI explicitly defines to be
3845 implementation dependent:
3846 *** The new compiler-only implementation still conforms with ANSI,
3847 but acts a little different than before. Besides the obvious
3848 changes in performance tradeoffs (that the cost per form passed
3849 to EVAL has gone up, and the cost per form executed by EVAL
3850 has gone down), the behavior of the system changes a little
3851 because there are no longer any interpreted function objects.
3852 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3853 e.g. doing COMPILE on the output of interactive DEFUN is
3855 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3857 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3858 has changed from (:CL) to NIL.
3859 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3860 e.g. #\Newline and #\Tab, don't have names specified in the
3861 ANSI Common Lisp standard, is now based on their ASCII symbolic
3862 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3863 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3864 are no longer used for output.
3865 ** changes in internal implementation constants:
3866 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3867 4 million. (If your application spends a lot of time GCing and
3868 you have a lot of RAM, you might want to experiment with
3869 increasing it even more.)
3870 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3871 However, almost all old code should still continue to work without
3872 immediate update, as SB-C-CALL is now a (deprecated) nickname
3874 ** Old operator names in the style DEF-FOO are now deprecated in
3875 favor of new corresponding names DEFINE-FOO, for consistency with
3876 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3877 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3878 internal symbols, but a few supported extensions like
3879 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3880 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3881 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3882 etc. as you get deeper into recursive calls to the debugger
3883 command loop, instead of the old "5]", "5]]", "5]]]"
3884 sequence. (I was motivated to do this when squabbles between
3885 ILISP and SBCL left me very deeply nested in the debugger. In the
3886 short term, this change will probably provoke more ILISP/SBCL
3887 squabbles, but hopefully it will be an improvement in the long run.)
3888 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3889 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3890 function, since declaiming return types involving aliens is
3891 (1) annoyingly messy to do by hand and (2) vital to efficient
3892 compilation of code which calls such functions.
3893 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3894 longer reexported by the SB-EXT package. They're solely useful
3895 for alien code, so it seems more logical that you should get
3896 them from the SB-ALIEN package, not in SB-EXT.
3897 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3898 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3899 features. Instead, the code that they used to control is always
3900 built into the system.
3901 * many other bug fixes
3902 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3903 advantage of the new EVAL-WHEN stuff and to clean them up in
3904 general, and they are now more ANSI-compliant in a number of
3905 ways. Martin Atzmueller is responsible for a lot of this.
3906 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3908 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3909 *** correct ERROR type for various file operations
3910 *** some fixes for Lisp streams
3911 *** DEFMETHOD syntax checking
3912 *** changing old weird representation of debug information as
3913 strings (which, among their other deficiencies, don't transform
3914 correctly when you rename packages, and don't change their
3915 print representation when you change things like *PACKAGE*
3916 and *PRINT-LENGTH*) to symbols and lists of symbols
3917 He also made several improvements and fixed several bugs in DESCRIBE.
3918 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3920 *** misbehavior of WRITE-STRING/WRITE-LINE
3921 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3922 and several other LOOP problems as well
3923 *** DIRECTORY when similar filenames are present
3924 *** DEFGENERIC with :METHOD options
3925 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3926 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3927 *** argument ordering in FIND with :TEST option
3928 *** mishandled package designator argument in APROPOS-LIST
3929 *** various problems in the backquote readmacro
3930 *** a bug in APROPOS
3931 *** probably some others that I'm not describing very well here,
3932 since the CVS log documents them by reference to sbcl-devel
3933 messages, and the SourceForge archives aren't working well.:-(
3934 ** Dan Barlow improved the Alpha port (and is making progress on the
3935 PPC port, for those of you who think different).
3936 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3937 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3938 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3939 continues to work on the SPARC port (for those of you in a position
3940 to look down upon our little PC-compatible boxes from a great height).
3941 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3942 and uses that copy, rather than the current dynamic value, when
3943 it's trying to decide whether to truncate output. Thus e.g.
3944 (let ((*print-lines* 50))
3945 (pprint-logical-block (stream nil)
3947 (let ((*print-lines* 8))
3948 (print (aref possiblybigthings i) stream)))))
3949 should now truncate the logical block only at 50 lines, instead of
3950 often truncating it at 8 lines, as it did before.
3951 * The doc/cmucl/ directory, containing old CMU CL documentation
3952 from the time of the fork, is no longer part of the base system.
3953 SourceForge has shut down its anonymous FTP service, and with it
3954 my original plan for distributing the old CMU CL documentation
3955 there. For now, if you need these files you can download an old
3956 SBCL source release and extract them from it.
3957 * The fasl file version number changed again, for dozens of reasons,
3958 some of which are apparent above.
3960 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3961 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3962 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3963 patch, so that DISASSEMBLE output is much nicer.
3964 * The code in the SB-PROFILE package now seems reasonably stable.
3965 I still haven't decided what the final interface should look like
3966 (I'd like PROFILE to interact cleanly with TRACE, since both
3967 facilities use function encapsulation) but if you have a need
3968 for profiling now, you can probably use it successfully with
3969 the current CMU-CL-style interface.
3970 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3971 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3972 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3973 link now returns the dangling link itself, and for similar
3974 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3975 link itself. (In these cases the old code signalled an error and
3976 looped endlessly, respectively.) Thus, DIRECTORY now works even
3977 in the presence of dangling and cyclic symbolic links.
3978 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3979 is now a supported extension again, since the consensus on
3980 sbcl-devel was that it can be useful for ordinary development
3981 work, not just for debugging SBCL itself.
3982 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3983 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3984 that currently-defined functions might be redefined later with
3985 different return types.
3986 * Hash tables can be printed readably, as inspired by CMU CL code
3987 of Eric Marsden and SBCL code of Martin Atzmueller.
3988 * better error handling in CLOS method combination, thanks to
3989 Martin Atzmueller porting Pierre Mai's CMU CL patches
3990 * more overflow fixes for >16Mbyte I/O buffers
3991 * A bug in READ has been fixed, so that now a single Ctrl-D
3992 character suffices to cause end-of-file on character streams.
3993 In particular, now you only need one Ctrl-D at the command
3994 line (not two) to exit SBCL.
3995 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3997 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3998 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3999 does the right thing.
4000 * The implementation of some type tests, especially for CONDITION
4001 types, is now tidier and maybe faster, due to CMU CL code
4002 originally by Douglas Crosher, ported by Martin Atzmueller.
4003 * Some math functions have been fixed, and there are new
4004 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4005 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4006 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4007 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4008 likely to be built into sbcl-0.7.0.)
4009 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4010 CL, ported to SBCL by Martin Atzmueller)
4011 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4012 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4013 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4014 * There's a new slam.sh hack to shorten the edit/compile/debug
4015 cycle for low-level changes to SBCL itself, and a new
4016 :SB-AFTER-XC-CORE target feature to control the generation of
4017 the after-xc.core file needed by slam.sh.
4018 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4019 COMPILE-FILE is no longer supported, so that now every function
4020 gets an entry point, so that block compilation looks a little
4021 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4022 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4023 returns the number of bytes consed since the system started,
4024 rather than the number consed since the first time the function
4025 was called. (The new definition parallels ANSI functions like
4026 CL:GET-INTERNAL-RUN-TIME.)
4027 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4028 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4029 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4030 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4031 * Fasl file version numbers are now independent of the target CPU,
4032 since historically most system changes which required version
4033 number changes have affected all CPUs equally. Similarly,
4034 the byte fasl file version is now equal to the ordinary
4037 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4038 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4039 is no longer recognized. I apologize for this, because it was
4040 listed in SB-EXT as a supported extension, but I found that
4041 its existing behavior was poorly specified, as well as incorrectly
4042 specified, and it looked like too much of a mess to straighten it
4043 out. I have enough on my hands trying to get ANSI stuff to work..
4044 * many patches ported from CMU CL by Martin Atzmueller, with
4045 half a dozen bug fixes in pretty-printing and the debugger, and
4046 half a dozen others elsewhere
4047 * fixed bug 13: Floating point infinities are now supported again.
4048 They might still be a little bit flaky, but thanks to bug reports
4049 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4050 as flaky as they were.
4051 * The --noprogrammer command line option is now supported. (Its
4052 behavior is slightly different in detail from what the old man
4053 page claimed it would do, but it's still appropriate under the
4054 same circumstances that the man page talks about.)
4055 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4056 are now supported, and enabled by default. Thus, the compiler can
4057 handle many floating point and complex operations much less
4058 inefficiently. (Thus e.g. you can implement a complex FFT
4060 * The compiler now detects type mismatches between DECLAIM FTYPE
4061 and DEFUN better, and implements CHECK-TYPE more correctly, and
4062 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4063 thanks to patches from Martin Atzmueller.
4064 * various fixes to make the cross-compiler more portable to
4065 ANSI-conforming-but-different cross-compilation hosts (notably
4066 Lispworks for Windows, following bug reports from Arthur Lemmens)
4067 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4068 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4069 fixed thanks to Pierre Mai's CMU CL patches.
4070 * fixes to keep the system from overflowing internal counters when
4071 it tries to use i/o buffers larger than 16M bytes
4072 * fixed bug 45a: Various internal functions required to support
4073 complex special functions have been merged from CMU CL sources.
4074 (When I was first setting up SBCL, I misunderstood a compile-time
4075 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4076 * improved support for type intersection and union, fixing bug 12
4077 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4078 more obscure bugs as well
4079 * some steps toward byte-compiling non-performance-critical
4080 parts of the system, courtesy of patches from Martin Atzmueller
4081 * Christophe Rhodes has made some debian packages of sbcl at
4082 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4083 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4084 stable, but are nonetheless usable. When he's ready, I'd be happy
4085 to add them to the SourceForge "File Releases" section. (And if
4086 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4087 * new fasl file format version number (because of changes in
4088 internal representation of (OR ..) types to accommodate the new
4089 support for (AND ..) types, among other things)
4091 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4092 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4094 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4096 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4097 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4098 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4099 * DESCRIBE now works on structure objects again.
4100 * Most function call argument type mismatches are now handled as
4101 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4102 know whether the function will be redefined before the call is
4103 executed. (The compiler could flag local calls with full WARNINGs,
4104 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4105 it doesn't keep track of enough information to know whether calls
4106 are local in this sense.)
4107 * Compiler output is now more verbose, with messages truncated
4108 later than before. (There should be some supported way for users
4109 to override the default verbosity, but I haven't decided how to
4110 provide it yet, so this behavior is still controlled by the internal
4111 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4112 src/compiler/ir1util.lisp.)
4113 * Fasl file format version numbers have increased again, because
4114 support for the Gray streams extension changes the layout of the
4115 system's STREAM objects.
4116 * The Gray subclassable streams extension now works, thanks to a
4117 patch from Martin Atzmueller.
4118 * The full LOAD-FOREIGN extension (not just the primitive
4119 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4120 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4121 but like most other programs, it defaults to copying the Unix
4122 environment from the original process instead of starting the
4123 new process in an empty environment.
4124 * Extensions which manipulate the Unix environment now support
4125 an :ENVIRONMENT keyword option which doesn't smash case or
4126 do other bad things. The CMU-CL-style :ENV option is retained
4127 for porting convenience.
4128 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4129 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4131 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4133 * A patch from Martin Atzmueller seems to have solved the SIGINT
4134 problem, and as far as we know, signal-handling now works cleanly.
4135 (If you find any new bugs, please report them!)
4136 * The system no longer defaults Lisp source file names to types
4137 ".l", ".cl", or ".lsp", but only to ".lisp".
4138 * The compiler no longer uses special default file extensions for
4139 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4140 seems to expect a single default extension for all compiled code,
4141 and there's no compelling reason to try to stretch the standard
4142 to allow two different extensions.) Instead, byte-compiled files
4143 default to the same extension as native-compiled files.
4144 * Fasl file format version numbers have increased again, because
4145 a rearrangement of internal implementation packages made some
4146 dumped symbols in old fasl files unreadable in new cores.
4147 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4148 many fewer weird special cases.
4149 * Bug #17 (differing COMPILE-FILE behavior between logical and
4150 physical pathnames) has been fixed, and some related misbehavior too,
4151 thanks to a patch from Martin Atzmueller.
4152 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4153 by Tim Moore, ported to SBCL by Martin Atzmueller.
4154 * Martin Atzmueller fixed several filesystem-related problems,
4155 including bug #36, in part by porting CMU CL patches, which were
4156 written in part by Paul Werkowski.
4157 * More compiler warnings in src/runtime/ are gone, thanks to
4158 more patches from Martin Atzmueller.
4159 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4162 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4164 * DESCRIBE now works on CONDITION objects.
4165 * The debugger now handles errors which arise when trying to print
4166 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4168 * The build system now uses an additional file, customize-target-features.lisp,
4169 to allow local modifications to the target *FEATURES* list. (The point of
4170 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4171 debugging features enabled, without having to worry about propagating it
4172 into everyone's system when I do a "cvs update".) When no
4173 customize-target-features.lisp file exists, the target *FEATURES* list
4174 should be constructed the same way as before.
4175 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4176 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4177 warn about behavior which is undefined under the ANSI spec. Note: This
4178 is specified by ANSI, but it's not very popular with programmers.
4179 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4180 macro in the SBCL sources for an example of a workaround which you
4181 might use to make portable ANSI-standard code which does what you want.
4182 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4183 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4184 when it's used as a non-toplevel form. (This is required in order
4185 to implement the DEFCONSTANT-EQX macro.)
4186 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4187 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4188 funny things, due to bugs in the implementation of EVAL-WHEN
4189 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4190 non-toplevel DEFCONSTANTs are uncommon.)
4191 * The core file version number and fasl file version number have been
4192 incremented, because the old noncompliant DEFCONSTANT behavior involved
4193 calling functions which no longer exist, and because I also took the
4194 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4195 * fixed bug 1 (error handling before read-eval-print loop starts), and
4196 redid debugger restarts and related debugger commands somewhat while
4198 ** The QUIT debugger command is gone, since it did something
4199 rather different than the SB-EXT:QUIT command, and since it never
4200 worked properly outside the main toplevel read/eval/print loop.
4201 Invoking the new TOPLEVEL restart provides the same functionality.
4202 ** The GO debugger command is also gone, since you can just invoke
4203 the CONTINUE restart directly instead.
4204 ** The TOP debugger command is also gone, since it's redundant with the
4205 FRAME 0 command, and since it interfered with abbreviations for the
4207 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4209 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4210 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4211 some porting work by Martin Atzmueller)
4212 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4213 with a boatload of patches which he ported to SBCL. Now that those
4215 ** The system tries to make sure that its low-priority messages
4216 are prefixed by semicolons, to help people who like to use
4217 syntax highlighting in their ILISP buffer. (This patch
4218 was originally due to Raymond Toy.)
4219 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4220 patches originally written by Raymond Toy.
4221 ** The compiler understands coercion between single-value and
4222 multiple-VALUES type expressions better, getting rid of some very
4223 weird behavior, thanks to patches originally by Robert MacLachlan
4224 and Douglas Crosher.
4225 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4226 lambda lists, thanks to a patch originally by Pierre Mai.
4227 ** The system no longer bogusly warns about "abbreviated type
4229 ** The compiler gets less confused by inlining and RETURN-FROM,
4230 thanks to some patches originally by Tim Moore.
4231 ** The system no longer hangs when dumping circular lists to fasl
4232 files, thanks to a patch originally from Douglas Crosher.
4233 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4234 undefined function error.
4235 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4236 in structure slot initforms) for now, documented workaround instead:-|
4237 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4238 * fixed bug 5: added stubs for various Gray stream functions called
4239 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4240 installed, at least appropriate type errors are generated
4241 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4242 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4243 consistently in DEFMETHOD forms.
4244 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4245 it doesn't seem to affect SBCL after all
4246 * The C runtime system now builds with better optimization and many
4247 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4249 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4251 * The system is now under CVS at SourceForge (instead of the
4252 CVS repository on my home machine).
4253 * The new signal handling code has been tweaked to treat register
4254 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4255 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4256 downstream, e.g. in debug-int.lisp, has implicit dependencies
4257 on the unsignedness of integer representation of machine words,
4258 and that caused the system to bomb out with infinite regress
4259 when trying to recover from type errors involving signed values,
4260 e.g. (BUTLAST '(1 2 3) -1).)
4261 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4262 (This was one of the bugs Peter Van Eynde reported back in July.)
4263 * The system now uses code inspired by Colin Walters' O(N)
4264 implementation of MAP (from the cmucl-imp@cons.org mailing
4265 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4266 inline the MAP operation, and there is more than one
4267 sequence argument to the MAP call (so that it can't just
4268 do ETYPECASE once and for all based on the type of the
4269 single sequence argument). (The old non-inline implementation
4270 of the general M-argument sequence-of-length-N case required
4271 O(M*N*N) time when any of the sequence arguments were LISTs.)
4272 * The QUIT :UNIX-CODE keyword argument has been renamed to
4273 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4274 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4276 * Raymond Wiker's patches to port dynamic loading from Linux to
4277 FreeBSD have been added.
4278 * The BUGS file is now more nearly up to date, thanks in large part
4279 to Martin Atzmueller's review of it.
4280 * The debugger now flushes standard output streams before it begins
4281 its output ("debugger invoked" and so forth).
4282 * The core version number and fasl file version number have both
4283 been incremented, because of incompatible changes in the layout
4285 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4286 used to not be called for a saved Lisp image.)
4287 * Martin Atzmueller's version of a patch to fix a compiler crash,
4288 as posted on sbcl-devel 13 September 2000, has been installed.
4289 * Instead of installing Martin Atzmueller's patch for the
4290 compiler transform for SUBSEQ, I deleted the compiler transform,
4291 and transforms for some similar consing operations.
4292 * A bug in signal handling which kept TRACE from working on OpenBSD
4294 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4295 away by constant folding
4296 * The system now defines its address space constants in one place
4297 (in the Lisp sources), and propagates them automatically elsewhere
4298 (through GENESIS and the sbcl.h file). Therefore, patching the
4299 address map is less unnecessarily tedious and error-prone. The
4300 Lisp names of address space constants have also been systematized.
4301 * CVS tags like dollar-Header-dollar have been removed from
4302 the sources, because they have never saved me trouble and
4303 they've been source of trouble working with patches and other
4304 diff-related operations.
4305 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4306 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4308 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4310 * The system has been ported to OpenBSD.
4311 * The system now compiles with a simple "sh make.sh" on the systems
4312 that it's supported on. I.e., now you no longer need to tweak
4313 text in the target-features.lisp-expr and symlinks in src/runtime/
4314 by hand, the make.sh takes care of it for you.
4315 * The system is no longer so grossly inefficient when compiling code
4316 involving vectors implemented as general (not simple) vectors (VECTOR T),
4317 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4318 which dares to use the various sequence functions on non-simple
4319 vectors, takes less of a performance hit.
4320 * There is now a primitive type predicate VECTOR-T-P
4321 to test for the (VECTOR T) type, so that e.g.
4322 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4323 can now be compiled with some semblance of efficiency. (The old code
4324 turned the type declaration into a full call to %TYPEP at runtime!)
4325 * AREF on (VECTOR T) is still not fast, since it's still compiled
4326 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4327 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4328 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4329 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4330 without making full calls to SUBTYPEP at runtime.
4331 (Some analogous efficiency issues for non-simple vectors specialized to
4332 element types other than T, or for non-simple multidimensional arrays,
4333 have not been addressed. They could almost certainly be handled the
4334 same way if anyone is motivated to do so.)
4335 * The changes in array handling break binary compatibility, so
4336 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4337 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4338 instead of (VALUES T T).
4339 * By following the instructions that Dan Barlow posted to sbcl-devel
4340 on 2 July 2000, I was able to enable primitive dynamic object
4341 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4342 functionality is not implemented (since it calls ld to resolve
4343 library references automatically, requiring RUN-PROGRAM for its
4344 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4345 try to resolve library references) is now supported.
4346 * The system now flushes the standard output streams when it terminates,
4347 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4348 them at several other probably-convenient times, e.g. in each pass of
4349 the toplevel read-eval-print loop, and after evaluating a form given
4350 as an "--eval" command-line option. (These changes were motivated by a
4351 discussion of stream flushing issues on cmucl-imp in August 2000.)
4352 * The source transform for TYPEP of array types no longer assumes
4353 that an array whose element type is a not-yet-defined type
4354 is implemented as an array of T, but instead punts, so that the
4355 type will be interpreted at runtime.
4356 * There is now some support for cross-compiling in make.sh: each of
4357 the phases of make.sh has its own script. (This should be transparent
4358 to people doing ordinary, non-cross-compile builds.)
4359 * Since my laptop doesn't have hundreds of megabytes of memory like
4360 my desktop machine, I became more motivated to do some items on
4361 my to-do list in order to reduce the size of the system a little:
4362 ** Arrange for various needed-only-at-cold-init things to be
4363 uninterned after cold init. To support this, those things have
4364 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4365 symbols with such names are now uninterned after cold init).
4366 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4367 fasl files for cold load.
4368 ** Remove the old compiler structure pooling code (which used to
4369 be conditional on the target feature :SB-ALLOC) completely.
4370 ** Redo the representation of some data in cold init to be more compact.
4371 (I also looked into supporting byte compiled code at bootstrap time,
4372 which would probably reduce the size of the system a lot, but that
4373 looked too complicated, so I punted for now.)
4374 * The maximum signal nesting depth in the src/runtime/ support code has
4375 been reduced from 4096 to 256. (I don't know any reason for the very
4376 large old value. If the new smaller value turns out to break something,
4377 I'll probably just bump it back up.)
4378 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4380 * Many, many bugs reported by Peter Van Eynde have been added to
4381 the BUGS list; some have even been fixed.
4382 * While enabling dynamic object file loading, I tried to make the
4383 code easier to understand, renaming various functions and variables
4384 with less ambiguous names, and changing some function calling
4385 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4386 * While trying to figure out how to do the OpenBSD port, I tried to
4387 clean up some of the code in src/runtime/. In particular, I dropped
4388 support for non-POSIX signal handling, added various comments,
4389 tweaked the code to reduce the number of compilation warnings, and
4390 renamed some files to increase consistency.
4391 * To support the new automatic configuration functionality in make.sh,
4392 the source file target-features.lisp-expr has been replaced with the
4393 source file base-target-features.lisp-expr and the machine-generated
4394 file local-target-features.lisp-expr.
4395 * fixed a stupid quoting error in make.sh so that using CMU CL
4396 "lisp -batch" as cross-compilation host works again
4398 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4400 * DESCRIBE no longer tries to call itself recursively to describe
4401 bound/fbound values, so that it no longer fails on symbols which are
4402 bound to themselves (like keywords, T, and NIL).
4403 * DESCRIBE now works on generic functions.
4404 * The printer now prints less-screwed-up representations of closures
4405 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4406 * A private symbol is used instead of the :EMPTY keyword previously
4407 used to mark empty slots in hash tables. Thus
4408 (DEFVAR *HT* (MAKE-HASH-TABLE))
4409 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4410 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4411 now does what ANSI says that it should. (You can still get
4412 similar noncompliant behavior if bang on the hash table
4413 implementation with all the symbols you get back from
4414 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4415 This breaks binary compatibility, since tests for equality to
4416 :EMPTY are wired into things like the macroexpansion of
4417 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4419 * There's now a minimal placeholder implementation for CL:STEP,
4420 as required by ANSI.
4421 * An obscure bug in the interaction of the normal compiler, the byte
4422 compiler, inlining, and structure predicates has been patched
4423 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4424 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4426 * Missing ordinary arguments in a macro call are now detected even
4427 when the macro lambda list contains &KEY or &REST.
4428 * The debugger no longer complains about encountering the top of the
4429 stack when you type "FRAME 0" to explicitly instruct it to go to
4430 the top of the stack. And it now prints the frame you request even
4431 if it's the current frame (instead of saying "You are here.").
4432 * As specified by ANSI, the system now always prints keywords
4433 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4435 * The default initial SIZE of HASH-TABLEs is now smaller.
4436 * Type information from CLOS class dispatch is now propagated
4437 into DEFMETHOD bodies, so that e.g.
4438 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4440 is now basically equivalent to
4441 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4442 (DECLARE (TYPE SINGLE-FLOAT X))
4444 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4445 operation, without having to do run-time type dispatch.
4446 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4447 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4448 * Since I don't seem to be making big file reorganizations very often
4449 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4450 is overflowing my ability to conveniently back them up), I've finally
4451 checked the system into CVS. (The CVS repository is on my home system,
4452 not at SourceForge -- putting it on SourceForge might come later.)
4453 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4454 high-level GC-NOTIFY-FOO functions send their output. (There's
4455 still very little control of where low-level verbose GC functions
4456 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4457 less than it used to -- the GC-NOTIFY-FOO functions are now under
4458 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4459 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4460 in only one place in the source code, and propagates it automatically
4461 everywhere that it's needed. Thus e.g. when I bump the version from
4462 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4463 * The C source files now include boilerplate legalese and documentation
4464 at the head of each file (just as the Lisp source files already did).
4465 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4466 to his page will be replaced with a link to his new CLiki service.
4468 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4470 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4471 * The build process now looks for GNU make under the default name "gmake",
4472 instead of "make" as it used to. If GNU make is not available as "gmake"
4473 on your system, you can change this default behavior by setting the
4474 GNUMAKE environment variable.
4475 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4476 can build without error under CMU CL.
4478 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4480 * There is now a partial SBCL user manual (with some new text and some
4481 text cribbed from the CMU CL manual).
4482 * The beginnings of a profiler have been added (starting with the
4483 CMU CL profiler and simplifying and cleaning up). Eventually the
4484 main interface should be through the TRACE macro, but for now,
4485 it's still accessed through vaguely CMU-CL-style functions and macros
4486 exported from the package SB-PROFILE.
4487 * Some problems left over from porting CMU CL to the new
4488 cross-compilation bootstrap process have been cleaned up:
4489 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4490 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4491 part when getting rid of the compiler *BACKEND* stuff.)
4492 ** The value of *NULL-TYPE* was screwed up, because it was
4493 being initialized before the type system knew the final
4494 definition of the 'NULL type. This screwed up several key
4495 optimizations in the compiler, causing inefficiency in all sorts
4496 of places. (I found it because I wanted to understand why
4497 GET-INTERNAL-RUN-TIME was consing.)
4498 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4499 PROCLAIM FTYPE information. Unfortunately this broke binary
4500 compatibility again, since now the forms output by DEFGENERIC
4501 to refer to functions which didn't exist in 0.6.3.
4502 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4503 can use the new (as of 0.6.3) transform for SOME into MAP into
4505 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4506 values to (INTEGER 0 1000000), so that the time code will no longer
4507 occasionally get blown up by Linux returning 1000000 microseconds
4508 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4509 its output conform to the ANSI spec. (Alas, this makes its output
4510 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4511 * A full call to MAP NIL with a single sequence argument no longer conses.
4512 * fixes to problems pointed out by Martin Atzmueller:
4513 * The manual page no longer talks about multiprocessing as though
4514 it were currently supported.
4515 * The ILISP support patches have been removed from the distribution,
4516 because as of version 5.10.1, ILISP now supports SBCL without us
4517 having to maintain patches.
4518 * added a modified version of Raymond Toy's recent CMU CL patch for
4519 EQUALP comparison of HASH-TABLE
4521 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4523 * The system still can't cross-compile itself with
4524 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4525 entails), but at least it can compile more of itself that way
4526 than it used to be able to, and various buglets which were uncovered
4527 by trying to cross-compile itself that way have now been fixed.
4528 * This release breaks binary compatibility again. This time
4529 at least I've incremented the FASL file format version to 2, so that the
4530 problem can be detected reliably instead of just causing weird errors.
4531 * various new style warnings:
4532 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4533 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4534 ** using the lexical binding of a variable named in the *FOO* style
4535 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4536 as specified by ANSI.
4537 * *RANDOM-STATE* is no longer automatically initialized from
4538 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4539 default behavior of the system is to repeat its behavior every time
4540 it's run. If you'd like to change this behavior, you can always
4541 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4542 old convention there was no comparably easy way to get the system to
4543 repeat its behavior every time it was run.
4544 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4545 FTYPE declarations has been removed, in favor of their ANSI
4546 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4547 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4548 the types of their sequence arguments can be determined at compile time.
4549 This is done through a new open code expansion for MAP which eliminates
4550 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4551 argument types can be determined at compile time.
4552 * The optimizer now transforms COERCE into an identity operation when it
4553 can prove that the coerced object is already of the correct type. (This
4554 can be a win for machine generated code, including the output of other
4555 optimization transforms, such as the MAP transform above.)
4556 * Credit information has been moved from source file headers into CREDITS.
4557 * Source file headers have been made more standard.
4558 * The CASE macro now compiles without complaining even when it has
4561 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4563 * (Note that the way that the PCL macroexpansions were rewritten
4564 to accommodate the change in DEFGENERIC below breaks binary
4565 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4566 not run under sbcl-0.6.2. Once we get out of alpha releases,
4567 i.e. hit release 1.0.0, we'll probably try to maintain binary
4568 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4569 and sbcl-1.4.4. Until then, however, it might be fairly common
4570 for maintenance releases to break binary compatibility.)
4571 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4573 * The reporting of unhandled signals has been changed to print some
4574 explanatory text as well as the report form. (Previously only
4575 the report form was printed.)
4576 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4577 it defines, so that the compiler no longer issues undefined function
4578 warnings for compiled-but-not-yet-loaded generic functions.
4579 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4580 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4581 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4582 section of the ANSI spec are supported.
4583 * The "" nickname for the "KEYWORD" package has been removed.
4584 The reader still handles symbol tokens which begin with a package marker
4585 as keywords, but it doesn't expose its mechanism for doing so in the
4586 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4587 * The system now issues STYLE-WARNINGs for contradictory TYPE
4588 proclamations. (Warnings for contradictory FTYPE proclamations would
4589 be nice too, but those can't be done usefully unless the type system
4590 is made smarter about FUNCTION types.)
4591 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4592 systematized, so that "*target-*.lisp is supposed to exist only on the
4593 target and imply that there's a related file which exists on the
4594 host, and *host-*.lisp is supposed to exist only on the host and imply
4595 that there's a related file which exists on the target. This involves a
4596 lot of renaming. Hopefully the acute confusion caused by the renaming
4597 will be justified by the reduction in chronic confusion..
4598 ** runtime-type.lisp -> early-target-type.lisp
4599 ** target-type.lisp -> late-target-type.lisp
4600 ** early-host-format.lisp -> early-format.lisp
4601 ** late-host-format.lisp -> late-format.lisp
4602 ** host-error.lisp -> misc-error.lisp
4603 ** early-error.lisp -> early-target-error.lisp
4604 ** late-error.lisp -> late-target-error.lisp
4605 ** host-defboot.lisp -> early-defboot.lisp
4606 ** code/misc.lisp -> code/target-misc.lisp
4607 ** code/host-misc.lisp -> code/misc.lisp
4608 ** code/numbers.lisp -> code/target-numbers.lisp
4609 ** code/early-numbers.lisp -> numbers.lisp
4610 ** early-host-type.lisp -> early-type.lisp
4611 ** late-host-type.lisp -> late-type.lisp
4612 ** host-typep.lisp -> typep.lisp
4613 ** load.lisp -> target-load.lisp
4614 ** host-load.lisp -> load.lisp
4615 ** host-disassem.lisp -> disassem.lisp
4616 ** host-insts.lisp -> insts.lisp
4617 ** byte-comp.lisp -> target-byte-comp.lisp
4618 ** host-byte-comp.lisp -> byte-comp.lisp
4619 ** host-signal.lisp -> signal.lisp
4620 ** host-defstruct.lisp -> defstruct.lisp
4621 ** late-target-type.lisp -> deftypes-for-target.lisp
4622 Furthermore, several other previously target-only files foo.lisp (e.g.
4623 hash-table.lisp and random.lisp) have been split into a target-and-host
4624 foo.lisp file and a target-only target-foo.lisp file, with their key type
4625 definitions in the target-and-host part, so that the cross-compiler will
4626 know more about target types.
4627 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4628 gone away. In their place are various *BACKEND-FOO* variables
4629 corresponding to the slots of the old structure.
4630 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4631 into the target SBCL has been fixed.
4632 * The chill.lisp system for loading cold code into a running SBCL
4634 * Support for the CMU CL "scavenger hook" extension has been removed.
4635 (It was undocumented and unused in the CMU CL sources that SBCL was
4636 derived from, and stale in sbcl-0.6.1.)
4637 * Various errors in the cross-compiler type system were detected
4638 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4639 (enabling various consistency checks). Many of them were fixed,
4640 but some hard problems remain, so the compiler is back to
4641 running without *TYPE-SYSTEM-INITIALIZED* for now.
4642 * As part of the cross-compiler type system cleanup, I implemented
4643 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4644 * I have started adding UNCROSS calls throughout the type system
4645 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4646 on cross-compiler input files will be able to go away, and various
4648 * CONSTANTP now returns true for quoted forms (as explicitly required
4651 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4653 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4654 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4655 (MAKE-LIST -1). In the longer term, it ought to become true
4656 that declarations are assertions even at SAFETY 1. For now, it's not
4657 quite true even at SAFETY 3, but it's at least more nearly true..
4658 (Note that this change seems to increases the size of the system by
4659 O(5%) and to decrease the speed of the compiler by 20% or more.)
4660 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4661 for the problem of printing dozens of lines of distracting information
4662 about low-level system machinery as part of the top stack frame
4663 on entry to the debugger when an undefined function was called.
4664 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4665 is not reset to COMMON-LISP-USER.
4666 * Compilation of stuff related to dyncount.lisp has been made conditional
4667 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4668 smaller. The various dyncount-related symbols have been moved into
4669 a new "SB-DYNCOUNT" package.
4670 * tty-inspect.lisp has been renamed to inspect.lisp.
4671 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4672 feature has gone away. (When we eventually port to other flavors of
4673 libc and/or Unix, we'll try to make the differences between flavors
4674 invisible at the user level.)
4675 * Various other *FEATURES* tags, and/or their associated conditionals,
4676 have been removed if obsolescent, or given better documentation, or
4677 sometimes given more-mnemonic names.
4679 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4681 * tidied up "make.sh" script
4682 * tidied up system directory structure
4683 * better "clean.sh" behavior
4684 * added doc/FOR-CMUCL-DEVELOPERS
4685 * many many small tweaks to output format, e.g. removing possibly-confusing
4686 trailing #\. character in DESCRIBE-INSTANCE
4687 * (EQUALP #\A 'A) no longer signals an error.
4688 * new hashing code, including EQUALP hashing
4689 * tidied up Lisp initialization and toplevel
4690 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4691 * command line argument processing
4692 * added POSIX-GETENV function to deal with Unix-ish environment variables
4693 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4694 terminating SBCL on EOF
4695 * non-verbose GC by default
4696 * There is no more "sbcl" shell script; the sbcl file is now the C
4697 runtime executable (just like CMU CL).
4698 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4700 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4701 symbol and package information as Lisp native symbol and package objects
4702 instead of strings naming symbols and strings naming packages. This way,
4703 whenever packages are renamed (as in warm init), debug information is
4704 transformed along with everything else.
4705 * tweaked the optimization policy declarations which control the building
4706 of SBCL itself. Now, among other things, the system no longer saves
4707 source location debugging information. (This helps two problems at once
4708 by reducing SBCL size and by keeping SBCL from trying to look for its
4709 sources -- which may not exist -- when reporting errors.)
4710 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4711 debugging and testing purposes
4712 * cleaned up printing, making the printer call PRINT-OBJECT for
4713 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4714 methods, giving nearly-ANSI behavior
4715 * converted almost all special variables to use *FOO* naming convention
4716 * deleted PARSE-TIME functionality, since it can be done portably
4717 * moved some files out of cold init into warm init
4718 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4720 * regularized formatting of source files
4721 * added an install.sh script
4722 * fixed ridiculous memory usage of cross-compiler by making
4723 compiler/alloc.lisp not try to do pooling unless it can hook
4724 itself into the GC of the cross-compilation host. Now the system
4725 builds nicely on my old laptop.
4726 * added :SB-ALLOC in target-features.lisp-expr
4727 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4728 was not implemented)
4729 * re-did condition handling and note reporting in the compiler. Notes
4730 are no longer handled by signalling conditions. Style warnings
4731 and warnings are handled more correctly and reported in such a way
4732 that it's easy to find one or the other in your output (so that you
4733 can e.g. figure out which of many problems caused COMPILE-FILE to
4735 * changed the severity of several compiler warnings from full WARNING
4736 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4737 compiler note reporting so that it doesn't use the condition system
4738 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4739 COMPILE-FILE command)
4740 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4741 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4742 no longer supported, since their implementation was deeply intertwingled
4743 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4744 * removed bogus "support" for compiler macros named (SETF FOO), and
4745 removed the compiler macro for SETF INFO (but only after making a fool
4746 of myself on the cmucl-imp mailing list by posting a bogus patch for
4747 DEFINE-COMPILER-MACRO..)
4748 * Compiled files containing forms which have side effects on the Lisp
4749 reader (such as DEFPACKAGE forms) are now handled more correctly.
4750 (Compiler queuing of top level lambdas has been suppressed by setting
4751 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4752 * deleted various currently-unused source files, e.g. gengc.lisp. They
4753 may be added back at some point e.g. when porting to other architectures,
4754 but until they are it's distracting to distribute them and to try to
4756 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4757 there were so many of them they're just distractions, and UNCROSS is
4758 known to be able to handle the current sources
4759 * moved PROFILE functionality into TRACE, so that it will be clear
4760 how the wrapping and unwrapping of functions when you profile them
4761 interacts with the wrapping and unwrapping of functions when you
4762 trace them. (Actually, the functionality isn't there yet, but at least
4763 the interface specification is there. Hopefully, the functionality will
4764 arrive with some future maintenance release.)
4765 * removed host-oops.lisp
4766 * changed signature of QUIT function to allow UNIX-CODE argument
4767 * fixed READ-SEQUENCE bug
4768 * tweaked verbose GC output so that it looks more like the progress
4769 output that ANSI specifies for functions like LOAD
4770 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4771 * added <http://sbcl.sourceforge.com> to the banner information printed by