1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.20 relative to 1.0.19:
3 * minor incompatible change: OPTIMIZE qualities
4 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
5 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
6 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
7 * documentation: some slot access efficiency guidelines have been
8 added to the user manual.
9 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
10 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
12 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
13 to more efficient EQ-comparison versions more often.
14 * optimization: enhanced derivation of DOLIST iteration variable type
16 * optimization: constant folding of simple (LIST ...) forms as DOLIST
18 * optimization: runtime lookup of function definitions can be
19 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
20 * optimization: compiler is able to derive the return type of
21 (AREF (THE STRING X) Y) as being CHARACTER.
22 * optimization: CLRHASH on empty hash-tables no longer does pointless
23 work. (thanks to Alec Berryman)
24 * bug fix: fixed #427: unused local aliens no longer cause compiler
25 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
27 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
28 alien-stack leakage. (reported by Andy Hefner)
29 * bug fix: PROGV signals an error when an attempt to violate declared
30 type of a variable or bind a constant is made.
31 * bug fix: SET signals an error when an attempt to violate declared
32 type of a variable is made.
33 * bug fix: restart computation during the execution of a restart
34 test function no longer causes infinite recursion. (reported by
36 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
37 signals an error. (thanks to Pierre Mai)
38 * bug fix: EXPORT left symbol unexported in conflict situations.
39 (thanks to Michael Weber)
40 * bug fix: correctly handle name conflicts involving CL:NIL.
41 (thanks to Michael Weber)
42 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
43 conflicts arising from USEing package with conflicting symbols
44 correctly. (thanks to Michael Weber)
46 changes in sbcl-1.0.19 relative to 1.0.18:
47 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
48 warnings that go otherwise unhandled will be muffled if they are
49 of the type that's the value of this variable.
50 * optimization: stack allocation is slightly more efficient on x86
52 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
53 where a raw slot always is initialized using the initform whose
54 type is not know sufficiently well a compile-time are now compiled
55 correctly. (reported by John Morrison)
56 * bug fix: compiler no longer makes erronous assumptions in the
57 presense of non-foldable SATISFIES types.
58 * bug fix: stack analysis missed cleanups of dynamic-extent
59 arguments in non-let-converted calls to local functions.
60 * improvements to the Windows port:
61 ** adjusted address spaces for building on both Win32 and
62 Win64. (thanks for John Connors)
63 * fixed some bugs revealed by Paul Dietz' test suite:
64 ** interval arithmetic during type derivation used inexact integer
65 to single-float coercions.
66 ** arithmetic operations involving large integers and single
67 floats give the same results in compiled and interpreted code.
68 ** deriving the result type of COERCE no longer signals an error
69 if the derived type of the second argument is a MEMBER type
70 containing invalid type specifiers.
71 ** ADJOIN with constant NIL as second argument works correctly.
72 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
74 changes in sbcl-1.0.18 relative to 1.0.17:
75 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
76 profiles only the current thread.
77 * minor incompatible change: changes to SYMBOL-VALUE of constants
78 defined with DEFCONSTANT now signal an error.
79 * enhancement: SB-SPROF now has support for wallclock profiling,
80 and is also able to profile specific threads. REPORT output
81 has also additional sorting options.
82 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
84 * optimization: structure allocation has been improved
85 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
86 ** out of line constructors are ~10% faster.
87 ** inline constructors are ~15% faster.
88 ** inline constructors are capable of dynamic extent allocation
89 (generally on x86 and x86-64, in some cases on other platforms
91 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
93 * optimization: file compiler is now able to coalesce non-circular
94 lists, non-base strings, and bit-vectors. Additionally, constants
95 are never referenced through SYMBOL-VALUE at runtime.
96 * optimization: code defining methods on PRINT-OBJECT (and other
97 generic functions in the COMMON-LISP package) now loads faster.
98 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
100 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
101 fasl is now deleted. (reported by Attila Lendvai)
102 * bug fix: READ-LINE always returned NIL for the last line in files.
103 (reported by Yoshinori Tahara)
104 * bug fix: more accurate disassembly annotations of foreign function
105 calls. (thanks to Andy Hefner)
106 * bug fix: trimming non-simple strings and non-string string
107 designators when the there is nothing to trim works properly.
108 (thanks to James Knight)
109 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
110 (thanks to Travis Cross)
111 * fixed some bugs revealed by Paul Dietz' test suite:
112 ** NIL is a valid function name (regression at 1.0.13.38)
113 ** FILL on lists was missing its return value (regression at 1.0.12.27)
114 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
115 fill pointers properly (regression at 1.0.12.23)
116 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
117 displacement indices properly (regression at 1.0.12.23)
119 changes in sbcl-1.0.17 relative to 1.0.16:
120 * temporary regression: user code can no longer allocate closure
121 variable storage on stack, due to bug 419 without explicitly
122 requesting it. Please consult sbcl-devel for advice if you need to
123 use this feature in the meanwhile.
124 * new feature: runtime argument --control-stack-size can be used to
125 adjust thread default control stack size.
126 * enhancement: improved TIME output
127 ** all times are reported using the measured accuracy (milliseconds
128 for real and GC times, microseconds for everything else.)
129 ** processor cycle counts on x86 and x86-64.
130 ** interpreted forms are counted for both evaluator modes.
131 ** number of lambdas converted by the compiler is reported.
132 ** CPU percentage report (computed from real and total run time.)
133 ** more comprehensive run time reporting, using a condenced format
134 ** interperted form, lambda, and page fault counts are omitted
136 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
138 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
139 * optimization: two argument forms of LAST are upto ~10% faster
140 in normal SPEED policies.
141 * optimization: NCONC no longer needs to heap cons its &REST list
142 in normal SPEED policies.
143 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
145 * bug fix: UNION and NUNION work with :TEST-NOT once more,
146 regression since 1.0.9.1. (thanks to Eric Marsden)
147 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
148 since 1.0.15.36. (thanks to Paul Khuong)
149 * bug fix: LAST when always returned the whole list when given a bignum
150 as the second argument.
151 * bug fix: dynamic extent allocation of nested lists and vectors
152 could leak to otherwise accessible parts.
153 * bug fix: invalid optimization of heap-allocated alien variable
155 * bug fix: fasl header checking is less vulnerable to different
156 platform word lengths.
157 * bug fix: more correct assembler syntax for GNU binutils
158 2.18.50.0.4 support. (thanks to Marijn Schouten)
159 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
161 * bug fix: the fopcompiler can handle LOCALLY forms (with no
162 declarations) successfully. (reported by Attila Lendvai)
164 changes in sbcl-1.0.16 relative to 1.0.15:
165 * minor incompatible change: revert the changes to sb-posix's error
166 signaling added in 1.0.14.
167 * minor incompatible change: change PROBE-FILE back to returning
168 NIL whenever we can't get a truename, as was the case before 1.0.14.
169 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
170 inherits from ERROR instead of just CONDITION.
171 * new feature: SB-INTROSPECT can provide source locations for instances
172 as well. (thanks to Tobian Ritterweiler)
173 * optimization: binding special variables now generates smaller code
174 on threaded platforms.
175 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
176 and cases where no :TEST is given but the compiler can infer that
177 the element to search is of type (OR FIXNUM (NOT NUMBER)).
178 * optimization: better LOGNOT on fixnums.
179 * optimization: modular arithmetic for a particular requested width
180 is implemented using a tagged representation unless a better
181 representation is available.
182 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
183 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
184 for wellformedness and returns a specialized vector. (reported by
185 Francois-Rene Rideau)
186 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
187 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
188 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
189 unscheduling timer at the same time as another timer fires.
190 * bug fix: don't reschedule timers for dead threads.
191 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
192 * bug fix: copying output from RUN-PROGRAM to a stream signalled
193 bogus errors if select() was interrupted.
194 * enhancement: add support for fcntl's struct flock to SB-POSIX.
196 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
197 * enhancement: cleaner backtraces for interactive interrupts, as
198 well as other cases where the interesting frames used to be
199 obscured by interrupt handling frames.
200 * enhancement: untracing a whole package using (UNTRACE "FOO") is
201 now supported, and tracing a whole package using (TRACE "FOO") now
202 traces SETF-functions as well.
203 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
204 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
205 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
206 * unreadably printed representation of hash-tables now includes
208 * bug fix: partially fixed #188: type propagation from assignments
209 is now more efficient.
210 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
211 'DOUBLE-FLOAT) are not flushable.
212 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
213 full address of the object, and none of the tag bits.
214 * bug fix: readably printing hash-tables now respects other printer
215 control variables. (reported by Cedric St-Jean)
216 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
217 keyword with MAKE-HASH-TABLE.
218 * bug fix: export SB-POSIX:MKSTEMP.
219 * bug fix: SORT was not interrupt safe.
220 * bug fix: XREF accounts for the last node of each basic-block as
222 * bug fix: MAKE-INSTANCE optimizations interacted badly with
223 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
224 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
225 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
226 create obsolete instances in the case of redefinition or
227 obsoletion of a superclass. (thanks to Andy Hefner)
228 * bug fix: Support for the Alpha architecture has been revived; it had
229 suffered somewhat from lack of maintenance since sbcl-1.0.
230 * improvements to the Windows port:
231 ** The system detects the codepage to use at startup, instead of
232 using the value from the saved core. (thanks to Kei Suzuki)
234 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
235 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
236 (see documentation for details.)
237 * revived support for OpenBSD (contributed by Josh Elsasser)
238 * partially fixed bug #108: ROOM no longer suffers from occasional
239 (AVER (SAP= CURRENT END)) failures.
240 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
241 bodies no longer cause a WARNING to be signalled. (reported by
243 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
244 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
245 the bug in TRUNCATE.) (reported by Michael Weber)
246 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
247 no samples. (reported by Andy Hefner)
248 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
249 no longer appear as (NIL ...) frames in backtraces.
250 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
251 is now actually exported from SB-EXT as documented. (reported by
253 * bug fix: sb-aclrepl now correctly understands how to inspect
254 single-floats on 64-bit platforms where single-floats are not boxed.
255 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
256 yet been finalized. (reported by Levente Meszaros)
257 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
258 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
259 SBCL-specific optimize qualities.
261 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
262 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
263 an executable in the search path, and does so in the child
264 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
265 been removed; it can be found in the CVS history, for somebody who
266 needs that search behavior (see the manual).
267 * minor incompatible change: compiler policy re. weakening type
268 checks has changed: now type checks are weakened only if SAFETY < 2
270 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
271 unparsing of directory pathnames as files. Analogously,
272 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
273 filename to parse into a directory pathname.
274 * enhancement: implicit generic function creation now signals a
275 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
276 users can bind handlers for and muffle around calls to LOAD.
277 * enhancement: RUN-PROGRAM allows unicode arguments and environments
278 to be used (using the default stream external format), and allows
279 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
280 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
281 strings and vectors whose element-type or simplicity is not fully
282 known at compile-time.
283 * optimization: STRING-TRIM and related functions no longer allocate
284 a new string when no trimming needs to be performed. These functions
285 are also faster than before when the input string has been declared
287 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
288 * optimization: READ-LINE is significantly faster for files containing
290 * optimization: non-open coded uses of character comparison operators
291 (e.g. char=) no longer cons when called with more than one parameter
292 on platforms supporting dynamic-extent allocation.
293 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
294 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
295 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
297 * bug fix: some sequence functions elided bounds checking when
299 * bug fix: too liberal weakening of union-type checks when SPEED >
301 * bug fix: more bogus fixnum declarations in ROOM implementation
304 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
305 * new feature: MAKE-HASH-TABLE now experimentally accepts a
306 :SYNCHRONIZED argument, which makes the hash-table safe for
307 concurrent accesses (but not iteration.) See also:
308 SB-EXT:WITH-LOCKED-HASH-TABLE, and
309 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
310 * optimization: CONCATENATE on strings is an order of magnitude faster
311 in code compiled with (> SPEED SPACE).
312 * optimization: SUBSEQ is ~50% faster on lists.
313 * bug fix: bug 417 fixed -- source location reporting is now more robust.
314 * bug fix: SUBSEQ on a list will now correctly signal an error if if
315 END is smaller then START.
316 * bug fix: SB-PROFILE will no longer report extra consing for nested
317 calls to profiled functions.
318 * bug fix: ROOM implementation had bogus fixnum declarations which
319 could cause type-errors when calling ROOM on large images.
320 * bug fix: if file compilation is aborted, the partial fasl is now
321 deleted, and COMPILE-FILE returns NIL as the primary value.
322 * bug fix: number of thread safety issues relating to SBCL's internal
323 hash-table usage have been fixed.
324 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
325 be returned from its body when the values were being returned
326 using unknown-values return convection and the W-P-O was wrapped
327 inside an UNWIND-PROTECT.
328 * bug fix: sb-posix should now compile again under Windows, enabling
331 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
332 * incompatible change: hash-table accessor functions are no longer
333 automatically protected by locks. Concurrent accesses on the same hash-table
334 from multiple threads can give inconsistent results or even corrupt the
335 hash-table completely. Multi-threaded applications should do their own
336 locking at the correct granularity. In the current implementation it is
337 still safe to have multiple readers access the same table, but it's not
338 guaranteed that this property will be maintained in future releases.
339 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
340 and will signal an error at runtime.
341 * enhancement: SB-THREAD package now exports a semaphore interface.
342 * enhancement: CONS can now stack-allocate on x86 and
343 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
345 * enhancement: nested lists can now be stack allocated on
346 platforms providing stack allocation support.
347 * enhancement: dynamic-extent support has been extended to support
348 cases where there are multiple possible sources for the stack
350 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
351 if the mutex is uncontested on Linux.
352 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
353 as specified by the CLHS. (thanks to Tobias Rittweiler)
354 * bug fix: NaN comparison now works on x86-64.
355 * bug fix: CLOSE :ABORT T on a stream with pending output now
357 * bug fix: instances of non-standard metaclasses using standard
358 instance structure protocol sometimes missed the slot type checks
360 * bug fix: known functions can be inlined in high-debug code.
362 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
363 * minor incompatible change: the MSI installer on Windows no longer
364 associates .lisp and .fasl files with the installed SBCL.
365 * minor incompatible change: :UNIX is no longer present in *FEATURES*
366 on Windows. (thanks to Luis Oliviera)
367 * new feature: SB-CLTL2 contrib module now implements
368 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
369 * optimization: scavenging weak pointers is now more efficient,
370 requiring O(1) instead of O(N) per weak pointer to identify
371 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
372 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
373 method bodies using constant slot-names when the first argument is
374 a specializer parameter for the method.
375 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
376 names, when the class of the instance is a direct instance
377 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
378 as slow as the constant slot-name case.)
379 * optimization: member type construction is now O(N) instead
381 * optimization: UNION and NUNION are now O(N+M) for large
382 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
384 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
385 now more readable in environments like Slime which display it.
386 (thanks to Tobias C. Rittweiler)
387 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
388 was able to infer the correct argument type for the object on which
389 the CAS operation was being performed.
390 * bug fix: copy propagation interfered with parallel assignment
391 semantics in local calls. (reported by Paul Khuong)
392 * bug fix: the signed modular fixnum shift compiled to wrong code on
393 x86 and x86-64. (spotted by a slight modification to some of
396 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
397 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
398 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
399 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
401 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
402 and generic function now print the object identity for anonymous
403 instances. (thanks to Attila Lendvai)
404 * enhancement: as an extension to MOP, SBCL now supports SETF of
405 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
406 (thanks to Attila Lendvai)
407 * enhancement: sb-cover has an alternate annotation mode which puts
408 the form annotations at the car of the form, instead of annotating
409 it completely. The benefit of this mode is that it shows better
410 which forms were instrumented by the compiler.
411 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
412 by printer control variables. (reported by Dan Corkill)
413 * bug fix: system leaked memory when delayed output was performed by
414 the OS in smaller chunks then expected. (thanks to David Smith)
415 * bug fix: system leaked memory when file streams were not closed
417 * bug fix: large objects written to slow streams that were modified
418 after the write could end up with the modified state written to
419 the underlying file descriptor.
420 * bug fix: multiple threads operating in parallel on the same stream
421 could cause buffer-overflows.
422 * bug fix: source location information is stored correctly
423 (broken since 1.0.6). This bug would generally show up as the
424 Slime debugger highlighting the wrong form when the sldb-show-source
426 * bug fix: Branch forms are again annotated as branches in the sb-cover
428 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
429 on x86-64. (reported by Gregory Vanuxem)
430 * bug fix: EQUALP could return wrong results for structures with raw
431 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
432 word). (reported by Vjacheslav Fyodorov)
433 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
436 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
437 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
438 atomic compare-and-swap operations on threaded platforms.
439 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
440 allows assigning a global minimum value to optimization qualities
441 (overriding proclamations and declarations).
442 * enhancement: closed over variables can be stack-allocated on x86
444 * performance bug fix: GETHASH and (SETF GETHASH) are once again
446 * optimization: slot definition lookup is now O(1). This speeds up
447 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
448 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
449 * optimization: ASSOC and MEMBER can now be open-coded for all
450 combinations of keyword arguments when second argument is constant
451 and SPEED >= SPACE. In other cases a specialized version is
453 * bug fix: using obsoleted structure instances with TYPEP and
454 generic functions now signals a sensible error.
455 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
456 (reported by Kristoffer Kvello)
457 * bug fix: backtrace construction is now more careful when making
458 lisp-objects from pointers on the stack, to avoid creating bogus
459 objects that can be seen by the GC.
460 * bug fix: defaulting of values in contexts expecting more than 7
461 variables now works on x86-64. (reported by Christopher Laux)
462 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
464 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
465 as the property-list of a symbol.
466 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
467 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
468 situations requested, are once again file-compileable. (reported
471 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
472 * MOP improvement: support for user-defined subclasses of
473 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
474 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
475 the expansion of DEFMETHOD, is responsible for generating a form
476 which creates a list of specializers when evaluated. Additional
477 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
478 debugging and introspective support.
479 * minor incompatible change: the (unsupported) spinlock interface
480 has changed: free spinlock now has the value NIL, and a held spinlock
481 has the owning thread as its value.
482 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
483 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
485 * enhancement: name of a socket-stream is now "a socket" instead of
487 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
488 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
489 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
490 for generic functions. (Thanks to Tobias C. Rittweiler)
491 * optimization: bignum printing speed has been improved by 20-40%
492 (depending on the bignum size.)
493 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
495 * bug fix: the cache used by the CLOS to store precomputed effective
496 methods, slot offsets, and constant return values is now thread and
498 * bug fix: generic function dispatch function updating is now thread
499 and interrupt safe (in the sense that the known issues have been
501 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
502 * bug fix: interning EQL-specializers is now thread and interrupt safe.
503 * bug fix: asdf systems with dependencies to the SB-POSIX or
504 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
505 * bug fix: interrupt safety of applicable method computation has been
508 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
509 * new contrib: sb-cover, an experimental code coverage tool, is included
511 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
512 significantly faster.
513 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
514 produce more efficient code on x86-64 if the compiler can determine
515 that (+ INDEX <constant>) does not require a bounds check and FOO
516 has an element type at least 8 bits wide.
517 * enhancement: a new, experimental synchronous timeout facility is
518 provided. Refer to SB-SYS:WITH-DEADLINE for details.
519 * enhancement: when a symbol name conflict error arises, the
520 conflicting symbols are always printed with a package prefix.
521 (thanks to Kevin Reid)
522 * enhancement: stepping is now once again supported on the SPARC and
523 MIPS platforms. (It is also now more likely to work on CheneyGC
525 * enhancement: sb-sprof can now also track and report accurate call
527 * bug fixes: the treatment of non-standard subclasses of
528 SB-MOP:SPECIALIZER is more correct.
529 * incompatible change: PURIFY no longer copies the data from the
530 dynamic space into the static and read-only spaces on platforms
531 that use the generational garbage collector
532 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
534 * bug fix: GC race condition occasionally resulting in crashes with
535 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
537 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
539 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
540 a STYLE-WARNING to be signalled (regression from 1.0.4.)
541 * bug fix: an asynchronous interrupt could previously leave the
542 system running with GC inhibited.
543 * bug fix: a DECLARE form evaluated at top-level now causes an error
544 rather than silently (or verbosely) returning NIL.
545 * bug fix: trying to dissassemble functions compiled at high DEBUG could
546 result in a error being signalled due to source form lookup errors.
547 (reported by Peter Graves)
549 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
550 * incompatible change: removed writer methods for host-ent-name,
551 host-ent-addresses -- changing the values did not update the DNS
553 * minor incompatible change: changed experimental JOIN-THREAD interface
554 * documentation: the manual now lists reader and writer methods
555 in class slot documentation sections. (thanks to Richard M Kreuter)
556 * documentation: unwinding from asyncronous events has been
557 documented as unsafe.
558 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
559 in multithreaded application code.
560 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
561 platforms. (thanks to James Anderson for the optimization hint)
562 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
564 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
565 variants no longer cons.
566 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
567 their NOT- variants no longer cons.
568 * optimization: EQUAL hash tables no longer use SXHASH for objects
569 of all data types, but instead use an EQL hash for types for which
570 EQUAL is the same as EQL.
571 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
572 are significantly faster.
573 * optimization: new STRING-OUTPUT-STREAM implementation is much
574 faster for large outputs and conses 30% less on average.
575 * enhancement: XREF information is now collected for references made
576 to global variables using SYMBOL-VALUE and a constant argument.
577 * enhancement: SIGINT now causes a specific condition
578 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
579 * bug fix: FILE-POSITION used to signal an error in some cases where
580 ANSI requires it to return NIL.
581 * bug fix: ADJUST-ARRAY is now interrupt-safe.
582 * bug fix: adding and removing fd-handlers is now interrupt-safe.
583 * bug fix: inlined calls to C now ensure 16byte stack alignment on
585 * bug fix: bad type declaration in the CLOS implementation has
586 been fixed. (reported by James Anderson)
587 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
588 (thanks to Lutz Euler)
589 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
590 required by the CLHS. (reported by Samium Gromoff)
591 * bug fix: dead unbound variable references now signal an error.
592 (reported by Marco Monteiro)
593 * bug fix: / with an unused value was being deleted in safe code.
594 (thanks to Marco Monteiro and Kevin Reid)
595 * bug fix: number of characters that can be written onto a single
596 line in a file is unlimited.
597 * bug fix: some GC deadlocks caused by asynchronous interrupts have
598 been fixed by inhibiting interrupts for when GC is disabled.
599 * bug fix: some interrupt safety issues with GETHASH, (SETF
600 GETHASH), CLRHASH and REMHASH have been fixed.
601 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
602 specifier no longer causes infinite recursion.
603 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
604 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
605 * bug fix: an &environment argument with the correct variable information
606 is passed to macros that are expanded during byte compilation.
607 (reported by Samium Gromoff)
608 * bug fix: a logic error was causing the hash function for bignums to
609 have excessive amounts of collisions. (reported by Faré Rideau)
610 * bug fix: modifying the contents of an array could change the return
611 value of SXHASH on that array, which is only allowed for strings
612 and bit vectors. (bug introduced in 0.9.16)
613 * improvement: the x86-64/darwin port now passes all tests (except
614 for the debugger tests) but should still be considered
615 experimental until this is fixed.
616 * improvement: a style-warning is signaled for CASE (etc) clauses with
617 duplicate keys. (thanks to Kevin Reid)
618 * improvement: macos/x86 and macos/x86-64 now use mach exception
619 handlers for dealing with illegal instructions (for trapping and
620 error handling) and memory protection violations (for GC).
622 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
623 * new platform: experimental support for x86-64/darwin (MacOS).
624 * incompatible change: the thread-safe (on most platforms) getaddrinfo
625 and getnameinfo sockets functions are used instead of gethostbyaddr
626 and gethostbyname, on platforms where the newer functions are available.
627 As a result, the ALIASES field of HOST-ENT will always be NIL on these
629 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
630 don't print the startup banner, but behave as if --noinform was passed
631 as a command line argument. (thanks to Kevin Reid)
632 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
633 * optimization: code using alien values with undeclared types is much faster.
634 * optimization: the compiler is now able to open code SEARCH in more cases.
635 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
636 * bug fix: using standardized COMMON-LISP special variables as loop
637 variables no longer signals bogus package lock violations. (reported
639 * bug fix: declaring local loop variables to be of a range-limited type
640 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
641 (reported by Andras Simon)
642 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
643 bugs remain on x86-64.)
644 * bug fix: the #= and ## reader macros now interact reasonably with
645 funcallable instances.
646 * bug fix: type-checks for function arguments were compiled using the
647 compiler policy settings of the wrong lexical environment (in 1.0.2
649 * bug fix: SHADOW accepts characters as string designators, as required
650 by the spec (thanks to Eric Marsden)
651 * bug fix: fixed GC safety issues when foreign functions are called with
652 non-base strings as arguments
653 * bug fix: more consistent error output for fatal-compiler-warnings, like
655 * bug fix: functions with proper names were showing up as NIL in
656 backtraces (reported by Edi Weitz, regression in 1.0.2)
658 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
659 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
660 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
661 produce more efficient code on the x86 if the compiler can determine
662 that (+ INDEX <constant>) does not require a bounds check and FOO
663 has an element type at least 8 bits wide.
664 * bug fix: references to undefined variables are handled the same way
665 in toplevel forms as in the normal compiler
666 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
668 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
669 (thanks to Jon Buller)
670 * improvement: faster compilation times for complex functions
671 * improvement: added readlink support to SB-POSIX (thanks to Richard
674 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
675 * improvement: experimental support for mach exception handling on
676 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
678 * improvement: support for GBK external format.
679 (thanks to Chun Tian (binghe))
680 * improvement: the debugger now displays variables that have been closed
681 over, in code compiled with (DEBUG 2) or higher
682 * improvement: support for executable cores on NetBSD (thanks to
684 * new feature: added a RESTART-FRAME debugger command
685 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
686 be used to provide an implementation for FILE-POSITION on Gray streams
687 (thanks to Eric Marsden)
688 * new feature: add syslog, openlog and closelog support to SB-POSIX
689 (thanks to Richard Kreuter)
690 * optimization: the function call overhead in code compiled with
691 a high DEBUG optimization setting is significantly
692 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
693 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
694 (thanks to Tony Martinez)
695 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
696 evaluated once (reported by Kevin Reid)
697 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
698 works again (thanks to Kilian Sprotte)
699 * bug fix: an error is signaled for tagbodies with duplicate tags
700 (thanks to Stephen Wilson)
701 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
702 * bug fix: Win32 port can now handle foreign code unwinding Lisp
703 stack frames from alien callbacks.
704 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
705 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
706 65k pages (thanks to David Woodhouse)
707 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
709 changes in sbcl-1.0.1 relative to sbcl-1.0:
710 * new platform: FreeBSD/x86-64, including support for threading.
711 * new feature: the compiler stores cross-referencing information
712 about function calls (who-calls), macroexpansion (who-macroexpands)
713 and special variables (who-binds, who-sets, who-references) for code
714 compiled with (< SPACE 3). This information is available through the
715 sb-introspect contrib.
716 * new feature: users may subclass SEQUENCE, and have instances of
717 these classes interoperate with standard Common Lisp functions if
718 a number of methods are defined. (This feature is experimental
719 and the interface subject to change based on feedback from SBCL
720 users and the general community)
721 * improvement: sb-sprof traces call stacks to an arbitrary depth on
722 x86/x86-64, rather than the previous fixed depth of 8
723 * improvement: another pthread back-end of mutex "pthread-futex".
724 * bug fix: non-ascii command-line arguments are processed correctly
725 (thanks to Yaroslav Kavenchuk)
726 * bug fix: non-required arguments were not passed correctly when a method
727 defined using DEFMETHOD was called from a mop-generated method using
728 CALL-NEXT-METHOD (reported by Pascal Costanza)
729 * bug fix: recursion is now permitted in accessors through
730 SLOT-UNBOUND. (reported by Pascal Costanza)
731 * bug fix: an error was signaled at startup if the HOME environment
732 variable was defined, but had an empty value (reported by Peter Van Eynde)
733 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
734 signal a PROGRAM-ERROR, not a BUG.
735 * bug fix: SB-POSIX:READDIR works when built with large file support.
736 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
738 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
739 for better automatic indentation support. (thanks to Matt Pillsbury)
740 * optimization: loading generic functions no longer takes O(n^2) time,
741 proportional to the amount of methods in the generic function
742 (reported by Todd Sabin and Jeremy Brown)
743 * optimization: the FIND and POSITION family of sequence functions
744 are significantly faster on arrays whose element types have been
746 * improvements to the Windows port:
747 ** Intermittent heap corruption problems have been fixed. (thanks
748 to Alastair Bridgewater)
749 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
751 ** Lisp is able to unwind foreign exception frames from alien
752 callbacks. (thanks to Alastair Bridgewater)
754 changes in sbcl-1.0 relative to sbcl-0.9.18:
755 * improvement: experimental support for threading on FreeBSD/x86.
756 (thanks to NIIMI Satoshi)
757 * improvement: runtime option --dynamic-space-size can be used
758 to set the size of the dynamic space reserved on startup.
759 * improvement: floating point modes in effect are now saved in
760 core, and restored on startup.
761 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
762 startup, not time since first call to GET-INTERNAL-REAL-TIME.
763 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
764 threads are not running after *SAVE-HOOKS* have run.
765 * improvement: writes to CLOS instance slots are type-checked in code
766 compiled with (SAFETY 3)
767 * improvement: floating-point exception handling on FreeBSD (thanks to
769 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
770 (thanks to Zach Beane)
771 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
773 * improvement: added support for the Shift-JIS external format.
774 (contributed by NIIMI Satoshi)
775 * improvement: callbacks are supported on Linux/PPC. (thanks to
777 * bug fix: compiler bug triggered by a (non-standard) VALUES
778 declaration in a LET* was fixed. (reported by Kaersten Poeck)
779 * bug fix: file compiler no longer confuses validated and already
780 dumped structurres. (reported by Kaersten Poeck)
781 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
782 fill-pointer signals a type-error as required. (thanks to
784 * bug fix: disassemly of funcallable instances works.
785 * bug fix: single stepping on PPC.
786 * bug fix: fix thread-safety problems in the type system (generally
787 manifesting as nonsensical errors like "STRING is a bad type specifier
788 for sequences" or "The value 1 is not of type FIXNUM")
789 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
790 (reported by Josip Gracin)
791 * bug fix: an error is signaled for attempts to displace arrays with
792 incompatible element types (thanks to Mario Mommer)
793 * bug fix: more correct handling of wide characters in debug info
794 (bug reported by Attila Lendvai and fixed by Juho Snellman)
795 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
796 and don't cause extra consing
797 * optimization: MAP and MAP-INTO are significantly faster on vectors
798 whose elements types have been declared.
799 * Improvements to SB-SPROF:
800 ** Support for allocation profiling
801 ** Reduced profiling overhead, especially for long profiling runs
802 * Improvements to the Windows port:
803 ** floating point exceptions are now reported correctly.
804 ** stack exhaustion detection works partially.
805 ** more accurate GET-INTERNAL-REAL-TIME.
806 ** better RUN-PROGRAM behaviour in case of errors in the child
808 ** PROBE-FILE now simplifies pathnames correctly.
809 ** DIRECTORY now works correctly with :WILD-INFERIORS.
810 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
811 1st 1970 (although time timezone data will be unreliable).
812 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
814 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
815 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
816 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
818 * bug fix: two potential GC deadlocks affecting threaded builds.
819 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
820 returns T (reported by Anton Kazennikov)
821 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
822 with non-variable places
823 * bug fix: remove a race condition in the setting of
824 funcallable-instance functions, this should make threaded CLOS
825 code more stable against memory faults.
826 * bug fix: corruption of specials when unbinding is interrupted by an
827 asynchronous unwind (reported by Hannu Koivisto)
828 * improvement: the debugger will now also display local variables that
829 are only used once, for code compiled with a DEBUG optimization quality
832 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
833 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
834 * incompatible change: External-format support for FFI calls. The
835 SB-ALIEN:C-STRING no longer implies an ASCII
836 external-format. Instead the string is subject to external-format
837 conversion. Additionally return values of type SB-ALIEN:C-STRING
838 are by default of type (SIMPLE-ARRAY CHARACTER), not
839 SIMPLE-BASE-STRING. For an alien type that behaves like the old
840 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
841 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
842 * incompatible change: SB-EXT package no longer contains the
843 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
844 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
846 * incompatible change: the single-stepper is no longer available
847 on Alpha, Mips and Sparc platforms.
848 * minor incompatible change: the direct superclasses of
849 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
850 not (STANDARD-OBJECT FUNCTION). This makes the
851 class-precedence-lists of GENERIC-FUNCTION and
852 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
854 * minor incompatible change: the default stream external format on
855 non-unicode SBCL is no longer detected from the locale, but is always
857 * new feature: Add a version of evaluator that uses an interpreter instead
858 of the compiler. EVAL still uses the compiler by default, to switch it
859 to use the interpreter, set the value of the variable
860 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
861 * minor incompatible change: the single-stepper REPL has been merged
862 with the normal debugger (see the "Stepping" heading of the debugger help
863 for more details). The debugger command STEP will no longer switch
864 to the single-stepper REPL.
865 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
866 for a type now works.
867 * bug fix: loading of default sysinit file works. (thanks to Leonid
869 * bug fix: better detection of circularities in the file-compiler.
870 (reported by Marco Monteiro)
871 * bug fix: the CL pathname functions now work with files that have
872 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
873 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
874 systems with Unix98 pty semantics.
875 * bug fix: ASDF-INSTALL will now work with bsd tar.
876 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
878 * bug fix: timers expiring in dead threads no longer cause a
879 type-error (reported by Paul "Nonny Mouse").
880 * bug fix: thanks to more lightweight single-stepper instrumentation,
881 code compiled with (DEBUG 3) will compile and execute significantly faster,
882 and will have more accurate type-inferencing than before
883 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
884 whose bindings are modified
885 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
886 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
887 ** replace dummy implementations of CL:MACHINE-INSTANCE and
888 CL:SOFTWARE-VERSION with proper version
890 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
891 * feature: implemented the READER-METHOD-CLASS and
892 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
893 as specified by AMOP.
894 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
896 * optimization: faster LOGCOUNT implementation on x86 and x86-64
897 (thanks to Lutz Euler)
898 * optimization: hashing of general arrays and vectors has been
899 improved. (reported by Any Fingerhut)
900 * enhancement: SB-INTROSPECT is now able to find definitions of
901 profiled functions. (thanks to Troels Henriksen)
902 * enhancement: compiler-macro expansion applies now to FUNCALL forms
903 as well, allowing compiler-macros for SETF-functions to expand.
904 * enhancement: step-instrumentation no longer wraps known
905 single-value functions with multiple-value context, allowing
906 better type inference.
907 * fixed bug #337: use of MAKE-METHOD in method combination now works
908 even in the presence of user-defined method classes. (reported by
909 Bruno Haible and Pascal Costanza)
910 * fixed bug #339(c): if there are applicable methods not part of any
911 long-form method-combination group, call INVALID-METHOD-ERROR.
912 (reported by Bruno Haible)
913 * fixed bug #361: the :FUNCTION initarg in the protocol for
914 initialization of methods can now be used to override
915 internally-produced optimized functions. (reported by Bruno
917 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
918 system-provided lambda expression no longer cause warnings about
919 unbound #:|pv-table| symbols.
920 * bug fix: improved the handling of type declarations and the
921 detection of violations for keyword arguments with non-constant
923 * bug fix: potentially erronous calls to PATHNAME and
924 MERGE-PATHNAMES were being flushed in some cases.
925 (reported by Richard Kreuter)
926 * bug fix: compiled calls to TYPEP were mishandling obsolete
927 instances. (reported by James Bielman and Attila Lendvai)
928 * bug fix: format strings with ~> without matching ~< no longer
929 trigger an AVER, but signal an understandable error instead.
930 (reported by Antonio Martinez)
931 * bug fix: specifying an output-file without a pathname-type for
932 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
933 of input-file instead of "fasl". (reported by Robert Dodier)
934 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
935 (reported by James Y Knight).
936 * bug fix: compiler-macros-function did not consider the environment
937 argument for shadowing by local functions.
938 * bug fix: compiler-macros expansion was inhibited by local INLINE
940 * bug fix: inline expansions of known functions were subject to
941 step-instrumentation in high debug policies, leading to problems
943 * bug fix: compiler failed to differentiate between different CONS
945 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
946 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
947 * bug fix: #368: incorrect use of expressed vs. upgraded array
949 * bug fix: #306a: more precise unions of array types.
950 * thread-safety improvements:
951 ** CONDITION-WAIT could return early on Linux, if the thread was
952 interrupted and subsequently continued with SIGCONT.
953 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
955 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
956 * added support for the ucs-2 external format. (contributed by Ivan
958 * minor incompatible change: pretty printing of objects of type
959 (cons symbol) is, in the default pprint-dispatch-table, now
960 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
962 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
963 called later in a class's lifetime, possibly as late as when the
964 first instance of the class is created. Previously,
965 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
966 class became finalizeable.
967 * fixed bug: FILE-POSITION sometimes returned inconsistent results
968 for multibyte external-format streams. (thanks to "vbzoli")
969 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
970 with :ALLOCATION :CLASS inherited from superclasses of the
972 * fixed bug: anonymous classes can now be created using the :NAME
973 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
974 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
975 * fixed bug: core-files saved with :EXECUTABLE T can again be
976 executed when SBCL_HOME isn't set. (reported by James Knight)
977 * fixed bug: toplevel LOCALLY forms with declarations could
978 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
979 * fixed bug: printing from several different threads using different
980 values of *print-case* could cause invalid output, due to
981 some internal special variables of the printer not being bound
982 thread-locally (reported by Max Mikhanosha)
983 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
984 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
985 (reported by Pascal Costanza)
986 * fixed bug: FINALIZE-INHERITANCE is called from
987 REINITIALIZE-INSTANCE on classes when the class has previously
988 been finalized, as required by AMOP.
989 * minor code generation optimizations:
990 ** better register allocation in CLOS dispatching functions
991 ** overflow detection when coercing signed bytes to fixnums on x86-64
992 ** is now implemented with one IMUL instruction instead of three shifts
993 ** more efficient bit-vector access on x86 and x86-64
994 ** more efficient access to raw structure slots on x86 and x86-64
995 * fixed some bugs revealed by Paul Dietz' test suite:
996 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
999 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1000 * feature: thread support on Solaris/x86, and experimental thread support
1002 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1004 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1005 default method for SLOT-UNBOUND.
1006 * minor incompatible change: prevent the user from specializing the
1007 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1008 somewhat counter to the intent of the protocol, I (CSR) think, and
1009 additionally it just doesn't work in SBCL as currently
1010 implemented, thanks to optimizations (that are always valid for
1011 the other three SLOT-VALUEish functions, but not for the setter).
1012 * minor incompatible change: the :SB-LDB feature is now enabled by
1013 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1014 the low-level debugger.
1015 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1016 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
1017 down to an SB-SYS:FD-STREAM, allowing direct communication in
1018 more cases. Temporary files and pipes are still used as a fallback
1020 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1021 on the non-reentrant C functions localtime(3) and gmtime(3).
1022 * bug fix: global optimization policy was not visible in LOCALLY and
1024 * bug fix: class objects can be used as specializers in methods.
1025 (reported by Pascal Costanza)
1026 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1027 with a type error. (reported by blitz_ on #lisp)
1028 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1029 failed with a type error. (reported by Pascal Bourguignon)
1030 * bug fix: merging pathnames against defaults with :DIRECTORY
1031 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1032 (reported by James Y Knight)
1033 * bug fix: saving large (>2GB) cores on x86-64 now works
1034 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1035 constant index and a (simple-array (signed-byte 32)) array
1036 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1037 error (patch by Robert J. Macomber)
1038 * feature: TIME now displays the amount of run-time spent in GC
1039 * bug fix: The debugger now does a better job of respecting
1040 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1041 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1042 workaround for bug 403.)
1043 * bug fix: floating point exception handling now works on FreeBSD
1044 (thanks to NIIMI Satoshi)
1045 * fixed some bugs revealed by Paul Dietz' test suite:
1046 ** MISC.641: LET-conversion were not supposed to work in late
1048 * improvements to the Win32/x86 port:
1049 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1050 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1052 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1053 * new feature: source path information is generated for macro-expansion
1054 errors for use in IDE's like Slime (thanks to Helmut Eller)
1055 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1056 * bug fix: compiler does not loop forever on an invalid type in
1058 * improvement: compilation of most CLOS applications is significantly
1060 * optimization: added a limited bytecode compiler for simple toplevel
1061 forms, speeding up compilation and FASL loading
1062 * bug fix: the statistical profiler now properly distinguishes anonymous
1065 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1066 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1067 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1068 into subclasses of the finalized class. Now user calls to
1069 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1070 system return before any subclasses are finalized.
1071 * minor incompatible change: The reader no longer ignores errors
1072 regarding non-existent packages in #+ and #- feature tests.
1073 * new feature: command line options --no-sysinit, --no-userinit to
1074 inhibit loading the corresponding init files
1075 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1076 for sending data through UDP sockets (thanks to François-René Rideau)
1077 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1078 error is signalled instead (thanks to François-René Rideau)
1079 * minor incompatible change: Error signalling behaviour of lexical
1080 operations violating package locks has changed slightly. Refer to
1081 documentation on package locks for details.
1082 * enhancement: EVAL can process IF-expressions without resorting to the
1084 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1085 constant-folded properly due to missing out-of-line functions.
1086 (reported by Mika Pihlajamäki)
1087 * bug fix: LISTEN sometimes returned T even in cases where no data was
1088 immediately available from the stream
1089 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1090 were reversed. (reported by Levente Mészáros)
1091 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1092 when given a vector displaced to an adjustable array. (reported
1094 * bug fix: derivation of float boundaries from numbers outside the
1095 appropriate float range (reported by John Wiseman)
1096 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1098 * bug fix: precomputing cache entries for generic functions with
1099 some subclasses of specializers as yet invalid does not attempt to
1100 fill a cache line with a negative offset. (reported by Levente
1102 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1103 allow condition class objects as arguments to DOCUMENTATION and
1104 (SETF DOCUMENTATION); only find and set documentation for
1105 structure names for the STRUCTURE doc-type. (suggested by Gary
1107 * improvements to the Win32/x86 port:
1108 ** (user-homedir-pathname) and default initialization file
1109 locations now know about the user's "Documents and Settings"
1110 directory (thanks to Yaroslav Kavenchuk)
1111 ** run-program is implemented (thanks to Mike Thomas)
1112 ** sockets support (thanks to Timothy Ritchey)
1113 ** better backtrace support (thanks to Alastair Bridgewater)
1114 ** sb-grovel supported
1115 ** asdf-install and sb-posix work somewhat
1116 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1117 * improvements to the Solaris/x86 port:
1118 ** works on Solaris 11/Solaris Express
1119 ** floating-point exception handling support
1120 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1121 * fixed some bugs revealed by Paul Dietz' test suite:
1122 ** REMOVE-METHOD returns its generic function argument even when
1123 the method is not one of the generic functions' methods.
1124 ** objects declared as MEMBER types can be admissible arguments to
1125 structure accessors.
1126 ** printing characters should simply be printed by the FORMAT ~:C
1128 ** compiler failure when compiling functions with hairy constant
1129 defaults for optional parameters.
1130 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1131 function, which is already optimized.
1133 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1134 * new platform: experimental support for SBCL x86/Darwin, including
1135 MacOS X 10.4.5 on Intel.
1136 * new feature: Unicode character names are now known to the system
1137 (through CHAR-NAME and NAME-CHAR).
1138 * new feature: the filesystem location of SBCL's core file is
1139 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1140 * minor incompatible change: the contrib modules SB-POSIX and
1141 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1142 this change is to make it easier to distribute
1143 location-independent binaries.
1144 * bug fix: as implied by AMOP, standardized classes no longer have
1145 slots named by external symbols of public packages. (reported by
1147 * optimization: calling functions via constant symbols -- as in
1148 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1149 via the function object as in (FUNCALL #'FOO).
1150 * optimization: on x86 and x86-64, the calling convention for the
1151 case of dealing with an unknown number of values has been altered
1152 to be friendlier to the prediction heuristics implemented,
1153 particularly with reference to CALL and RET pairing. (thanks to
1154 Alastair Bridgewater)
1155 * optimization: on x86, the code for access to thread-local symbol
1156 values and binding/unbinding of thread-local symbols is smaller.
1157 (thanks to Alastair Bridgewater)
1158 * enhancement: CONSTANTP is now able to determine constantness of
1159 more complex forms, including calls to constant-foldable standardized
1160 functions and some special forms beyond QUOTE.
1161 * fixed bug: occasional GC crashes on Solaris/x86
1162 * optimization: x86-64 supports stack allocation of results of simple
1163 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1164 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1165 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1166 (thanks to James Knight)
1167 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1168 by the standard (thanks to Stephen Compall)
1170 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1171 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1172 be used for bundling the runtime and the core file into one
1173 executable binary. This feature is not currently supported on all SBCL
1174 platforms. (thanks to James Bielman and NIIMI Satoshi)
1175 * new feature: a generational or ephemeral garbage collector is now
1176 the default on the PowerPC platform (both Linux and Darwin). The
1177 old Cheney (stop and copy) collector is a build-time option.
1178 (thanks to Cyrus Harmon, after Raymond Toy)
1179 * minor incompatible change: the method by which SBCL finds its
1180 contributed modules has changed; it no longer relies on symbolic
1181 links from an $SBCL_HOME/systems directory, but searches directly
1182 in the subdirectories of $SBCL_HOME.
1183 * enhancement: the dynamic heap size on the Linux/PPC platform is
1184 markedly larger, even using the older Cheney garbage collector.
1185 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1186 certain complicated string types. (reported by Gary King)
1187 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1188 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1189 * fixed bug: DOCUMENTATION on structures no longer signals an
1190 error if no structure type of the right name exists. (reported by
1192 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1193 applicable non-standard primary or :AROUND method on
1194 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1195 no longer cause unbound variable errors. (reported by Kevin Reid)
1196 * fixed bug: metacircle resolution in cases where methods have slots
1197 added before the slots from STANDARD-METHOD. (reported by Jean
1199 * fixed bug: the Power PC assembly code for calling into lisp
1200 sometimes computed its return address wrongly (depending on the
1201 15th bit of the address, fixed at link time). This used to
1202 manifest itself in a segmentation violation while building PCL.
1203 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1204 many others over the years)
1205 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1206 the stack pointer (treated as a signed integer) is negative.
1207 (thanks to Peter van Eynde)
1209 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1210 * new platform: experimental support for the Windows operating
1211 system has been added. (thanks to Alastair Bridgewater)
1212 * fixed several bugs in and robustified the PPC FFI (including
1213 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1214 * bug fix: allow non-simple string symbol names (reported by Paul
1216 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1218 * bug fix: saving a core corrupted callbacks on x86/x86-64
1219 * bug fix: closed a loophole in metacircularity detection and
1220 grounding in the PCL implementation of CLOS.
1221 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1222 (reported by tomppa on #lisp)
1223 * bug fix: clear the direction flag on Lisp -> C transitions, as
1224 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1225 (reported by Andrej Grozin and Hendrik Maryns)
1226 * optimization: major improvements to GC efficiency on GENCGC platforms
1227 * optimization: faster implementation of EQUAL
1228 * optimization: emit more efficient opcodes for some common
1229 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1230 * optimization: several other minor code-generation improvements on x86-64
1231 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1233 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1234 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1235 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1236 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1237 by ANSI as a generic function, and for consistency (SETF
1238 GENERIC-FUNCTION-NAME) is treated likewise.
1239 * fixed bug #233.b: make constraint propagation notice when a variable
1240 value is changed after it is referenced but before it is used
1241 * fixed bug #296: no more arbitrary behaviour from filenames with
1242 odd characters as --load arguments. (reported by Adam Warner)
1243 * fixed bug #390: :CHARACTER-SET pathname components now work as
1244 expected. (reported by Tim Daly Jr)
1245 * fixed bug #391: complicated :TYPE intersections in slot
1246 definitions no longer cause an error in PCL internals.
1247 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1248 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1249 returning the number of octets which would be written to the
1250 file-stream. (thanks to Robert J. Macomber)
1251 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1252 arguments to the internal stream functions. (thanks to David
1254 * bug fix: stack exhaustion is now handled on the x86/SunOS
1255 platform. (thanks to Daisuke Homma)
1256 * bug fix: more accurate ROOM results on GENCGC platforms
1257 * optimization: improved type inference for arithmetic-for
1258 index variables in LOOP
1259 * optimization: faster floating-point SQRT on x86-64
1260 * fixed some bugs revealed by Paul Dietz' test suite:
1261 ** DOCUMENTATION returns NIL instead of "" for method combinations
1262 that don't have a docstring
1264 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1265 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1266 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1267 therefore are not customizeable by user code (as seems to be at
1268 least permitted and maybe required by AMOP). As a consolation,
1269 however, the SBCL implementation of these functions now calls
1270 REINITIALIZE-INSTANCE as specified by AMOP.
1271 * bug fix: slot-definition documentation is propagated as per ANSI
1272 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1273 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1274 argument, as do eslotd initialization methods. (from Pascal
1275 Costanza's "Closer" project)
1276 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1277 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1279 * bug fix: it is now possible to have more than one subclass of
1280 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1281 (reported by Bruno Haible, Pascal Costanza and others)
1282 * bug fix: the dependent update protocol now works for generic
1283 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1284 and Pascal Costanza)
1285 * bug fix: condition-class instances corresponding to
1286 DEFINE-CONDITION forms are now created eagerly. (reported by
1287 Kalle Olavi Niemitalo on comp.lang.lisp)
1288 * bug fix: floating point printing is more accurate in some
1289 circumstances. (thanks to Simon Alexander)
1290 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1291 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1292 * bug fix: callbacks on OS X now preserve stack-alignment.
1293 (thanks to Cyrus Harmon)
1294 * enhancement: the x86-64 disassembler is much better at
1295 disassembling SSE instructions. (thanks to Lutz Euler)
1296 * enhancement: CHECK-TYPE on a variable now allows type-inference
1297 (thanks to Vincent Arkesteijn)
1298 * optimization: improved performance of EUC-JP external format.
1299 (thanks to NIIMI Satoshi)
1300 * optimization: performance improvements to IO on file streams of
1301 :ELEMENT-TYPE CHARACTER
1302 * optimization: much faster memory allocation on x86-64
1303 * optimization: faster garbage collections (latency and throughput)
1305 * optimization: faster bignum subtraction and division on x86 and x86-64
1306 (thanks to Lutz Euler)
1307 * optimization: more accurate type-inference for loops that use a
1308 floating point index variable or a negative step.
1310 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1311 * bug fix: add a workaround to SBCL looping infinitely at startup on
1312 Linux kernels with apparently buggy implementations of personality().
1313 (thanks to Svein Ove Aas)
1314 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1315 (thanks to David Lichteblau)
1316 * bug fix: local bindings shadow global symbol macros for
1317 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1318 * optimization: non-open coded uses of numeric comparison operators
1319 (e.g. >) no longer cons when called with more than one parameter
1320 on platforms supporting dynamic-extent allocation.
1321 * enhancement: saving cores with foreign code loaded is now supported
1322 on MIPS/Linux in addition to the previously supported platforms.
1323 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1324 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1325 * bug fix: division by zero in sb-sprof when no samples were collected
1326 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1327 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1328 (thanks to Alexander Kjeldaas)
1329 * new feature: ignoring the return values of destructive functions
1330 like NREVERSE signals a compile-time style-warning.
1331 (thanks to Kevin Reid)
1332 * new feature: the alignment of alien structure fields can be
1333 explicitly specified. (thanks to Cyrus Harmon)
1334 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1335 and dump core on SIGQUIT
1337 ** incompatible change: threads do not inherit values of specials
1338 from their parents (see manual)
1339 ** bug fix: threads stacks belonging to dead threads are freed by the
1340 next exiting thread, no need to gc to collect thread stacks anymore
1341 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1342 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1343 ** bug fix: dynamic variable and thread start related gc lossage
1344 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1346 * fixed some bugs revealed by Paul Dietz' test suite:
1347 ** SUBTYPEP is slightly more accurate on heinously complicated
1348 CONS types where some of the members have uncertain (in the
1349 NIL, NIL sense) type relationships to each other.
1351 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1352 no longer purified unless :PURIFY T is explicitly specified.
1353 ** Non-purified cores are significantly smaller than before
1355 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1356 * new feature: timers based on Zach Beane's excellent timer package
1357 * added support for the following external formats: koi8-u,
1358 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1359 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1360 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1361 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1362 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1363 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1364 * incompatible change: a threaded SBCL will no longer revert to
1365 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1366 * bug fix: interrupts are disabled until startup is complete; no
1367 more sigsegvs when receiving a signal to soon
1368 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1370 * bug fix: add a workaround for the memory randomization features in
1371 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1372 workaround will only be in effect on systems with the proc filesystem
1374 * bug fix: printing objects of type HASH-TABLE signals a
1375 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1377 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1378 have been running for over 50 days. (reported by Gilbert Baumann)
1379 * bug fix: the logic for getting names of functions gets less
1380 confused when confronded with alternate-metaclass
1381 funcallable-instances. (reported by Cyrus Harmon)
1382 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1383 consistent, even on internal alternate-metaclass objects.
1384 * bug fix: flush closure information collected by physical
1385 environment analysis prepass before the main pass. (bug reported
1387 * bug fix: compiler pack phase does not modify a hashtable, which is
1388 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1389 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1390 may be expanded. (reported by Alexander <malishev> on c.l.l)
1391 * bug fix: no more style-warnings when compiling code using LAST
1392 under high-SPEED low-SPACE settings. (reported by David Wallin
1394 * fixed some incompatibilities between SBCL's MOP and the MOP
1396 ** the METAOBJECT class is now implemented;
1397 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1398 STANDARD-OBJECT, as required;
1399 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1400 now compatible (as required by VALIDATE-SUPERCLASS); there
1401 remains a consistency requirement over the presence or absence
1402 of the FUNCTION class in the superclass list of finalized
1403 classes; see the manual for more details;
1404 ** the :AROUND method for COMPUTE-SLOTS on
1405 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1406 requested slot ordering.
1408 ** bug fix: parent thread now can be gc'ed even with a live
1410 ** bug fix: binding a special with PROGV to no value is not
1411 the same as that symbol not having been bound (thanks to
1413 ** bug fix: binding specials is thread safe (thanks to
1415 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1416 and SB-SPROF do not die with 'no handler for signal XX in
1417 interrupt_handle_now(..)' anymore
1418 ** bug fix: WITH-TIMEOUT works with multiple running threads
1419 * fixed some bugs revealed by Paul Dietz' test suite:
1420 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1421 the :method-class keyword argument.
1423 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1424 * new port: the Solaris operating system on x86 processors is now
1425 mostly supported, though some rough edges in the environment
1426 remain. (thanks to Daisuke Homma)
1427 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1428 space for its heap. (thanks to Thiemo Seufer)
1429 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1430 closures. (thanks to Thiemo Seufer)
1431 * minor incompatible change: eof selects abort in the debugger.
1432 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1433 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1435 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1436 deprecated, and will go away in a future revision of SBCL.
1437 * minor incompatible change: GC-ON and GC-OFF are no longer
1438 implemented with a counter, it does not matter how many times gc
1439 is switched on or off
1440 * bug fix: discriminating functions for generic function classes
1441 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1442 make invalid assumptions about method precedence order. (reported
1444 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1445 platforms. (thanks to Thiemo Seufer)
1446 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1447 * bug fix: correct pathname printing with printer escaping is on.
1448 (thanks to Kevin Reid)
1449 * bug fix: complex VOP definitions in "user-space" no longer trigger
1450 package locks. (reported by Zach Beane)
1451 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1452 for funcallable-instance functions, and is no different from
1454 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1455 characters in the current readtable. (reported by Nicholas Neuss)
1456 * bug fix: SUBTYPEP on various CONS types returns more a more
1457 accurate acknowledgment of its certainty.
1458 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1459 lists in some cases. This partially fixes bug 384.
1460 * flush all standard streams before prompting in the REPL and the
1462 * bug fix: signal handling and triggering gc do not conflict
1463 directly anymore, in particular a high frequency sb-sprof does
1464 not prevent gc from running
1465 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1466 approximation for timezone and DST information between the
1467 universal time epoch and the smallest negative 32-bit time_t.
1468 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1469 year 1899 so long as the encoded time is non-negative.
1470 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1471 the correct answer for non-constant rotate amounts when performing
1472 an inline 32-bit rotation.
1474 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1475 there is only one thread in the session
1476 ** bug fix: memory leak for streams created in one thread and
1477 written to in another
1478 ** bug fix: lockup when compiled with gcc4
1479 ** bug fix: race that allows the gc to be triggered when gc is
1481 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1482 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1484 ** bug fix: finished threads are gc'ed properly
1485 * fixed some bugs revealed by Paul Dietz' test suite:
1486 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1487 has arguments with a different set of applicable methods from
1488 the orignal arguments.
1489 ** The type error thrown by MAP now has a correct expected-type
1491 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1492 name a compiled function.
1493 ** Three MISC tests where a large bignum was improperly coerced to
1494 a float that couldn't represent that bignum during type
1495 derivation were fixed.
1496 ** SUBTYPEP can now handle types involving the negation of a
1497 list-form FUNCTION type.
1498 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1499 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1500 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1502 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1503 * New feature: Experimental support for bivalent streams: streams
1504 opened with :element-type :default now allow character and binary
1505 (unsigned-byte 8) I/O
1506 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1507 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1509 * bug fix: no more highly sporadic "couldn't check whether ~S is
1510 readable" when reading a stream and an interrupt hits in the middle
1511 of a select system call
1512 * compiler better recognizes complex arrays (reported by Eduardo
1514 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1515 for variables on SBCL built with linkage-tables. (reported by Luis
1517 * various error reporting improvements.
1518 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1519 (Thanks to Thiemo Seufer)
1520 * bug fix: nested reader invokations work correctly
1521 * bug fix: it is possible to have simultaneous references to foreign
1522 code and foreign data with the same name.
1524 ** added x86-64 support
1525 ** incompatible change: the threading api now works with thread
1526 objects instead of thread ids
1527 ** bug fix: threads are protected from signals and interruption when
1528 starting up or going down
1529 ** bug fix: a race where an exiting thread could lose its stack to gc
1530 ** bug fix: don't halt on infinite error in threads if possible
1531 ** fixed numerous gc deadlocks introduced in the pthread merge
1532 ** bug fix: fixed thread safety issues in read and print
1533 ** bug fix: debugger doesn't hang on session lock if interrupted at
1534 an inappropriate moment
1535 ** bug fix: run-program is now thread safe(r)
1536 ** bug fix: inner with-recursive-lock no longer releases the mutex
1537 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1538 * fixed some bugs revealed by Paul Dietz' test suite:
1539 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1540 EXPECTED-TYPE slots filled.
1541 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1543 ** MAKE-CONDITION accepts classes as type-designators.
1544 ** COMPILE may never return NIL.
1545 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1546 range before calling Unix time functions
1548 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1549 * numerous signal handling fixes to increase stability
1550 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1551 * minor incompatible change: we now correctly canonize default
1552 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1553 as per the MOP, rather than the historical (INITARG INITFUNCTION
1554 INITFORM). (reported by Bruno Haible)
1555 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1556 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1557 for more information.
1558 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1559 pathname is a directory pathname.
1560 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1561 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1563 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1564 :METACLASS argument in addition to a class name. (reported by
1565 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1566 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1567 (reported by Bruno Haible; patch from Gerd Moellmann)
1568 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1570 * bug fix: more cleanups to the floating point exception handling on
1571 x86-64 (thanks to James Knight)
1572 * bug fix: the compiler does not try to constant fold calls of
1573 COERCE and BIT-* functions when they return freshly constructed
1574 objects. (reported by Nikodemus Siivola and Paul Dietz)
1575 * optimization: improved the MIPS versions of generic (in the
1576 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1577 * optimization: direct conversion of (unsigned-byte 32) to floats on
1578 the PowerPC platform.
1579 * optimization: structure instances with raw slots now use less
1580 memory, and probably show better memory locality. (thanks to
1582 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1583 are treated as requests for stack allocation on the x86-64,
1584 Alpha-32, PPC and SPARC platforms.
1585 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1586 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1587 (thanks to Tony Martinez)
1589 ** gcing a dead thread can no longer lead to lockups
1590 ** threads block signals until they are set up properly
1591 ** errno is no longer shared by threads
1592 ** interrupt-thread restores the eflags register on x86
1593 ** fixed some lockups due to gc/thread interaction
1594 * fixed some bugs revealed by Paul Dietz' test suite:
1595 ** invalid dotted lists no longer raise a read error when
1596 *READ-SUPPRESS* is T
1597 ** signal an error if a symbol that names a declaration is used
1598 as the name of a type, or vice versa
1599 ** allow using the (declare (typespec var*)) abbreviation for
1600 (declare (type typespec var*)) with all type specifiers
1601 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1602 ** always return NIL from PPRINT-POP when OBJECT is NIL
1603 ** don't signal errors when pretty-printing malformed LABELS,
1604 FLET or MACROLET forms
1605 ** declarations in a DOLIST body are also in scope for the
1607 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1609 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1612 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1613 * fixed cross-compiler leakages that prevented building a 32-bit
1614 target with a 64-bit host compiler.
1615 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1616 opened with :IF-EXISTS :OVERWRITE.
1617 * fixed bug 281: error for an invalid qualifier in a short-form method
1618 combination method is not signalled until the faulty method is called.
1619 * bug fix: iteration variable type inferrer failed to deal with open
1620 intervals. (reported by Alan Shields)
1621 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1622 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1623 or more runtime options were provided to the sbcl binary.
1624 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1625 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1626 * optimization: there's now a fast-path for fixnum arguments in the
1627 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1628 * optimization: the code generated on x86-64 is more compact thanks
1629 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1630 * bug fix: floating-point exception handling now partly works on
1631 x86-64. (Thanks to James Knight)
1632 * improvement to the MIPS backend from Thiemo Seufer: C-style
1633 64-bit long long arguments and return values to alien functions
1635 * fixed some bugs revealed by Paul Dietz' test suite:
1636 ** the type-error signalled from WARN has a filled-in DATUM slot.
1637 ** the type-error required when a stream is not associated with
1638 a file has the stream as its datum.
1639 ** type-errors on single-floats on x86-64 no longer have
1640 :INVALID-OBJECT as the datum
1641 ** the type-errors signalled for invalid function names now have
1642 a correct expected type
1643 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1644 for structures defined with a :TYPE. Documentation strings for
1645 typed structures are no longer immediately discarded
1646 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1647 broadcast streams and synonym streams. FILE-LENGTH now also works
1648 on broadcast streams.
1650 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1651 * incompatible change: the --noprogrammer option, deprecated since
1652 version 0.7.5, has been removed. Please use the equivalent
1653 --disable-debugger option instead.
1654 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1656 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1657 inoperational for a while now) has been completely removed.
1658 * null lexical environments are now printed as #<NULL-LEXENV>,
1659 significantly reducing the amount of clutter in typical backtraces.
1660 * documentation on weak pointers, finalization, and after GC hooks
1661 has been added to the manual.
1662 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1663 as other specialized array types, is much faster. SUBSEQ and
1664 COPY-SEQ on such arrays have also been sped up.
1665 * optimization: EQL is now more efficient when at least other argument
1666 is known to be of type (OR FIXNUM (NOT NUMBER)).
1667 * fixed bug: the runtime is now less vulnerable to changes in the
1668 size of the SBCL object on OS X, and virtual memory is reserved for
1669 all spaces that need to be at a fixed address.
1670 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1671 * fixed bug: finalizers and after GC hooks that cause consing are now
1673 * fixed bug: compiler error messages and summaries are now printed to
1674 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1675 * fixed inference of the upper bound of an iteration variable.
1676 (reported by Rajat Datta).
1677 * fixed bug 211e: calling local functions with duplicated constant
1678 keyword argument no longer causes a bogus style warning about an
1680 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1681 ftype declaration to be disregarded. (reported by Dave Roberts)
1682 * fixed bug 373: caused by erronous compilation of references to alien
1683 variables in the runtime on ppc/darwin.
1684 * fixed bug 376: CONJUGATE type deriver.
1685 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1686 (reported by Baughn on #lisp)
1687 * a cross-compiler bug on non-x86 platforms has been identified and
1688 fixed. (thanks to Bruno Haible)
1689 * improvements to the MIPS runtime code for increased stability.
1690 (thanks to Thiemo Seufer)
1691 * increased the maximimum compact environment size to allow
1692 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1693 * partial workaround for bug 135: don't name the function we're
1694 calling for hairy cases of EVAL, so as not to accumulate one environment
1695 entry per call to EVAL. (reported by Kevin Reid)
1696 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1697 * optimization: type testing for non-vector arrays should be faster.
1698 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1700 * bug fix: setting 31st element of a bit vector to zero did not work
1702 * bug fix: redefining a class definition which failed due to a
1703 previous accessor / function clash now works (but see BUGS entry
1704 #380 for more problems in this area). (thanks to Zach Beane)
1705 * the long form of DEFINE-METHOD-COMBINATION disables method group
1706 checking when given a single method group with pattern *. (thanks
1708 * on x86 compiler supports stack allocation of results of simple
1709 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1710 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1711 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1712 * fixed some bugs related to Unicode integration:
1713 ** the restarts for recovering from input and output encoding
1714 errors only appear when there is in fact such an error to
1716 * fixed some bugs revealed by Paul Dietz' test suite:
1717 ** MISC.549 and similar: late transformation of unsafe type
1718 assertions into derived types caused unexpected code
1720 ** SCALE-FLOAT type deriver is less wrong.
1721 ** type derivers for EXP, LOG and similar functions compute result
1722 types for complex arguments better.
1723 ** (MISC.563) CONJUGATE type deriver works for very restricted
1725 ** out-of-line type testers for character strings are available.
1726 ** EQUAL compiler transform understands specialness of objects
1728 ** accessing double-floats stored on the stack now works on x86-64.
1729 ** debugger internals could sometimes create invalid lispobjs,
1730 resulting in GC crashes.
1731 ** MISC.548: type check weakening can convert required type into
1733 ** initialization forms for bindings are not in scope of free special
1736 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1737 * incompatible change: thread support for non-NPTL systems has
1738 been removed - locking is buggy and unreliable. A threaded
1739 SBCL build will now warn at startup and refuse to create
1740 new threads, unless futex support is detected in the kernel
1741 * incompatible change: the top level REPL now has only an ABORT
1742 restart associated with it, not TOPLEVEL and ABORT as it used to.
1743 TOP and TOPLEVEL are now available as debugger commands for
1744 returning to the top level.
1745 * incompatible change: forms evaluated in the REPL now use the
1746 global optimization policy.
1747 * incompatible change: user- and system-initialization files are
1748 no longer processed with LOAD, but by READ and EVAL; hence the
1749 global optimization policy, startup package, readtable, etc,
1751 * The .fasl file format number has been incremented because of
1752 various incompatible changes.
1753 * internal entry point details and argument counts no longer appear
1754 in backtraces unless explicitly requested by setting
1755 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1756 * built-in and standard functions no longer have names like "top
1757 level local call to FOO".
1758 * fixed bug 32: functions defined in non-null lexical environments
1759 now have more legible printed representation
1760 * fixed bug 33: functions defined in non-null lexical environemnts
1761 are now more amenable to inspection by INSPECT.
1762 * workaround for bug 354: XEPs no longer appear in backtraces unless
1763 explicitly requested.
1764 * fixed bug: receiving the signal which results from attempting to
1765 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1766 SIGBUS on other *BSDs) on architectures where the C stack is also
1767 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1768 to debugger confusion or wild instability. (reported by Cheuksan
1770 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1771 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1772 (reported by Lutz Euler)
1773 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1774 compiled code. (reported by Paul Dietz)
1775 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1776 specialized parameter to a method to something that is not TYPEP
1777 the specializer is now possible.
1778 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1779 face of package deletion.
1780 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1781 pathname. (reported by David Tolpin on c.l.l)
1782 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1783 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1784 STRING-STREAM and FILE-STREAM, respectively.
1785 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1786 than previously; in addition, its test suite is now run on build.
1787 (thanks to Luke Gorrie)
1788 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1789 * optimization: added a immediate representation for single-floats
1791 * fixed some bugs revealed by Paul Dietz' test suite:
1792 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1793 ** attempting to create a package with a colliding nickname causes
1794 correctable errors to be signalled.
1795 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1796 ** several x86-64 backend bugs related to sign-extension of immediate
1799 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1800 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1801 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1803 * fixed loading of multiply forward-referenced layouts.
1804 (thanks to Cheuksan Wang)
1805 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1806 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1807 (see COMPILE-FILE documentation for details of :PRINT option)
1808 * fixed bugs 19 and 317: fixed-format floating point printing is
1809 more accurate. This also fixes a bug reported by Adam Warner
1810 related to the ~@F format directive.
1811 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1813 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1814 dispatch table if the from-char is a dispatch macro character.
1815 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1816 by the wordsize no longer ignore the last word. (reported by Lutz
1818 * fixed bug in type checking of dynamic-extent variables. (reported
1820 * optimization: sequence traversal functions use their freedom to
1821 coerce function designators to functions.
1822 * optimization: code with many calls to CLOS methods specialized on
1823 CLOS classes has had redundant type checks removed.
1824 * optimization: added declarations to speed up operations that access
1825 the internal character database (for example STRING-UPCASE)
1826 * optimization: comparison operations between floats and sufficiently small
1827 fixnums no longer create extra rationals
1828 * fixed some bugs related to Unicode integration:
1829 ** portions of multibyte characters at the end of buffers for
1830 character-based file input are correctly transferred to the
1831 start of the buffer at the next read.
1832 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1833 passing it through to OPEN.
1834 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1835 argument given to internal calls to OPEN.
1836 ** the built-in comment readers (introduced by character sequences
1837 ";" and "#|") are more forgiving to encoding errors; they will
1838 STYLE-WARN and then attempt to resync the stream at a character
1839 boundary. (thanks to Teemu Kalvas)
1840 * fixed some bugs in the x86-64 port:
1841 ** Negative short int return values from c-calls are sign-extended
1843 ** The stack is aligned to 16-bytes for c-calls, as required by
1844 the ABI. (thanks to Cheuksan Wang)
1845 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1846 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1847 for enums. (thanks to Vincent Arkesteijn)
1848 ** Multiple small optimizations and bugfixes for floating point
1850 * fixed some bugs revealed by Paul Dietz' test suite:
1851 ** Space, Tab, Linefeed, Return and Page have the invalid
1852 secondary constituent character trait.
1853 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1855 ** WITH-INPUT-FROM-STRING should only update the index place on
1857 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1858 works more reliably.
1859 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1860 with one-dimensional arrays with fill pointers.
1861 ** TYPE-OF failed on a complex with an integer realpart and a
1863 ** compiler failure during type inference for the code of form
1864 (IF (EQL X (THE ...)) ...) (MISC.535).
1866 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1867 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1868 platform. The port supports 61-bit fixnums, large memory spaces
1869 and reloading shared object files.
1870 * enhancement: saving cores with foreign code loaded is now
1871 supported on ppc/Darwin in addition to the previously supported
1873 * enhancement: the statistical profiler now walks deeper into the
1874 call stack for more meaningful call-graphs and accrued time
1875 reports (x86/x86-64 only). It also now reports time spent in
1877 * enhancement: it is now possible to trace most individual methods
1878 of a generic function in addition to tracing the generic function
1880 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1882 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1883 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1884 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1885 produces an error. (thanks to Vincent Arkesteijn)
1886 * bug fix: NAMESTRING on pathnames with :WILD components in their
1887 directories works correctly. (thanks to Artem V. Andreev)
1888 * fixed bug 125: compiler preserves identity of closures. (reported
1890 * bug fixed: functions with &REST arguments sometimes failed with
1891 "Undefined function" when compiled with (DEBUG 3). (reported by
1893 * bug fix: overflow during compiling of setting element of a bit
1894 vector with constant index and value. (reported by Timmy Douglas)
1895 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1896 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1897 * on x86 compiler partially supports stack allocation of dynamic-extent
1899 * GO and RETURN-FROM do not check the extent of their exit points
1900 when compiled with SAFETY 0.
1901 * fixed some bugs related to Unicode integration:
1902 ** encoding and decoding errors are now much more robustly
1903 handled; it should now be possible to recover even from invalid
1904 input or output to the terminal. (thanks to Teemu Kalvas)
1905 ** provided a first cut at implementing STRING-TO-OCTETS and
1906 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1907 ** altered the SB-MD5 contributed module slightly, changing the
1908 interface just enough for it to be supportable for builds where
1909 lisp characters are not eight bits.
1910 * fixed some bugs revealed by Paul Dietz' test suite:
1911 ** the FORMATTER-generated functions for ~V[ conditionals require
1912 the correct number of arguments.
1913 ** READ-FROM-STRING returns the mandated second value when applied
1914 to displaced strings.
1915 ** the #\Rubout and #\Backspace characters are treated as invalid
1916 constituent characters by the tokenizer.
1918 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1919 * new feature: reloading changed shared object files with
1920 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1921 * new feature: references to foreign variables and functions
1922 can now be compiled and loaded before the corresponding shared
1923 object file is loaded, as long as the foreign definitions are
1924 available at runtime.
1925 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1926 supported. (thanks to Dan Debertin)
1927 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1928 just keywords. (thanks to Vincent Arkesteijn)
1929 * fixed bug #331: structure-class instances corresponding to
1930 DEFSTRUCT forms are now created eagerly.
1931 * fixed bug #345: backtraces from calls to undefined functions work
1932 on x86 as well. Related bug #61 is now also partially fixed on x86
1933 (backtraces from throws to unknown catch tags.)
1934 * bug fix: lambda-list parsing is now stricter vrt. order and number
1935 of lambda-list keywords.
1936 * bug fix: as specified by AMOP, an error is signalled if a
1937 class-option appears multiple times in a DEFCLASS form. (reported
1939 * bug fix: RANDOM can be compiled when the compiler derives the type
1940 of its numeric argument as a disjoint set of small integers.
1941 (reported by Paul Dietz)
1942 * bug fix: starting a core saved with shared objects loaded when
1943 those objects are not available no longer causes threaded SBCL to
1944 hang. (reported by Sean Ross)
1945 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1947 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1948 argument, which must always be NIL. (reported by Kalle Niemitalo)
1949 * bug fix: printing 1.0d+23 no longer results in an error.
1950 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1951 * bug fix: structure slot setters preserve evaluation order. (thanks
1953 * fixed some bugs related to Unicode integration:
1954 ** RUN-PROGRAM can allow its child to take input from a Lisp
1955 stream. (reported by Stefan Scholl)
1956 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1957 locales. (reported by Ken Causey)
1958 * fixed some bugs revealed by Paul Dietz' test suite:
1959 ** INCF, DECF and REMF evaluate their place form as specified in
1961 ** FORMATTER expands ~{ ~} iteration directives with V or #
1962 parameters correctly.
1963 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1964 consequent uses no arguments correctly.
1965 ** the system has a partial understanding of the (COMPLEX RATIO)
1967 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1970 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1971 * new feature: a build-time option (controlled by the :SB-UNICODE
1972 keyword feature, enabled by default) for building the system with
1973 support for the entire 21-bit character space defined by the
1975 * new feature: the system now has rudimentary external-format
1976 support; the primary user-visible change at this time is that
1977 characters with the high bit set (such as lower-case-e-acute) will
1978 print correctly to a terminal in a UTF-8 environment.
1979 * minor incompatible change: BASE-CHAR no longer names a class;
1980 however, CHARACTER continues to do so, as required by ANSI.
1981 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1982 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1983 has been moved to the SB-EXT package (temporarily re-exported from
1985 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1986 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1988 * fixed bug #351: better error-handlind and reporting for malformed
1990 * fixed bug #350: bignum-printing is now more memory-efficient,
1991 allowing printing of very large bignums, eg. (expt 2 10000000).
1992 (reported by Bruno Haible)
1993 * fixed bug #302: better primitive-type selection for intersection
1995 * fixed bug #308: non-graphic characters now all have names, as
1996 required. (reported by Bruno Haible)
1997 * bug fix: redefining a class with different superclasses now correctly
1998 removes it from the direct-subclasses of its previous superclasses.
1999 (reported by David Morse)
2000 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2001 new value now works. (reported by Bruno Haible)
2002 * bug fix: correct canonicalization of multiple non-standard slot
2003 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2004 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2005 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2006 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2007 now exists, an signals an error.
2008 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2009 during macroexpansion for non-iteration variables as well. (reported
2010 by Bruno Haible for CMUCL)
2011 * bug fix: Cyclic structures and unprintable objects in compiler
2012 messages no longer cause errors. (reported by Bruno Haible)
2013 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2014 and READ-FROM-STRING all now return a primary value of NIL if
2015 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2016 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2017 (reported by Bruno Haible for CMUCL)
2018 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2019 do not designate a condition. (reported by Bruno Haible for
2021 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2022 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2023 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2024 permitting resolution in favour of any of the conflicting symbols.
2025 (reported by Bruno Haible for CMUCL)
2026 * bug fix: EQUAL compiler optimizations is less aggressive on
2027 strings which can potentially compare true despite having distinct
2028 specialized array element types.
2029 * bug fix: unit enumerations can be defined without dividing by
2030 zero. (thanks to Vincent Arkesteijn)
2031 * FORMAT compile-time argument count checking has been enhanced.
2032 (report from Bruno Haible for CMUCL)
2033 * a partial workaround for the bug 262: the compiler does not try to
2034 inline-expand a local function doing RETURN-FROM from a deleted
2035 BLOCK. (thanks to Peter Denno for the bug report and to David
2036 Wragg for the simple test case)
2037 * fixed some bugs revealed by Paul Dietz' test suite:
2038 ** RENAME-PACKAGE allows all package designators as new package
2040 ** constraint propagation and lambda variable substitution are
2041 more cautious in dealing with partially deleted code.
2042 ** compiler sometimes lost reoptimization passes.
2043 ** CERROR, given a condition as condition designator, passes its
2044 remaining arguments to the continue format control without
2046 ** Case-altering FORMAT directives work correctly on non-ASCII
2048 ** The REAL type specifier handles bounds outside the floating
2049 point ranges without signalling FLOATING-POINT-OVERFLOW.
2050 ** Functions with IR1-transformations can create intercomponent
2051 references to global functions.
2052 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2054 ** FORMAT ~R treats a nil value for its first parameter correctly.
2056 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2057 * enhancement: saving cores with foreign code loaded is now
2058 supported on x86/NetBSD and sparc/Linux in addition to the previously
2059 supported platforms.
2060 * bug fix: on some platforms repeated installations caused multiple
2061 copies of HTML documentation to be installed -- should not happen
2062 any more. (reported by Stefan Scholl)
2063 * bug fix: parsing self-recursive alien record types multiple times
2064 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2065 original patch by Helmut Eller for CMUCL)
2066 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2067 (thanks to Richard Kreuter)
2068 * bug fix: defining classes whose accessors are methods on existing
2069 generic functions in other (locked) packages no longer signals
2070 bogus package lock violations. (reported by François-René Rideau)
2071 * bug fix: special variables as DEFMETHOD parameters no longer have
2072 associated bogus type declarations. (reported by David Wragg and
2074 * bug fix: read-write consistency on streams of element-type
2075 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2076 * bug fix: redefiniton of the only method of a generic function with
2077 no DEFGENERIC no longer emits a full WARNING. In addition,
2078 redefinition of generic functions with no DEFGENERIC to an
2079 incompatible lambda list now signals an error. (thanks to Zach
2081 * bug fix: DEFGENERIC now works even when there's a function of the
2082 same name in an enclosing lexical environment. (thanks to Zach
2084 * fixed compiler failure, caused by instrumenting code during
2085 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2086 * optimization: added loop analysis and improved register allocation
2087 * fixed some bugs revealed by Paul Dietz' test suite:
2088 ** POSITION on displaced vectors with non-zero displacement
2089 returns the right answer.
2090 ** (SIMPLE-STRING) is a valid type specifier for sequence
2092 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2094 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2095 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2097 ** The justification version of the FORMAT ~< directive treats
2098 non-zero minpad parameter correctly.
2100 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2101 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2102 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2103 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2104 the supported interface.
2105 * new feature: Single-stepping of code compiled with DEBUG 2 or
2106 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2107 * new feature: saving cores with foreign code loaded is now
2108 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2109 Timothy Moore's work for CMUCL)
2110 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2111 parameters to * instead of NIL if no initform is supplied.
2112 (reported by Johan Bockgaard)
2113 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2114 correctly when FUNCALL appears as the car of the form. Note:
2115 despite this FUNCALL forms are not currently subject to
2116 compiler-macro expansion. (port of Raymond Toy's fix for the
2117 same from CMUCL, reported by Johan Bockgaard)
2118 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2119 (thanks for Teemu Kalvas)
2120 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2121 case instead of terminating the iteration (thanks for Julian
2122 Squires, Sean Champ and Raymond Toy)
2123 * bug fix: incorrect expansion of defgeneric that caused a style
2124 warning. (thanks for Zach Beane)
2125 * bug fix: slot accessor effective method computation works properly
2126 for classes with multiple non-standard applicable methods on
2127 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2128 * on x86 compiler supports stack allocation of results of LIST and
2129 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2130 CMUCL implementation by Gerd Moellmann)
2131 * fixed some bugs revealed by Paul Dietz' test suite:
2132 ** FORMAT strings with both the ~<~:;~> form of the justification
2133 directive and pretty-printing directives cause an error.
2135 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2136 * incompatible change: the internal functions
2137 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2138 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2139 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2140 instead of the old functions.
2141 * new feature: on platforms where "dladdr" is available foreign
2142 function names now appear in backtraces. (based on Helmut Eller's
2144 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2145 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2147 * documentation: ASDF manual is now distributed with SBCL.
2148 * bug fix: SBCL can now load its contributed modules with REQUIRE
2149 even if the system-provided entries have been removed from
2150 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2152 * bug fix: backtraces involving undefined functions or assembly
2153 routines are more informative. (thanks to Brian Downing)
2154 * bug fix: mutually referent alien structures now work correctly.
2155 (reported by Rick Taube)
2156 * bug fix: structures defined by WITH-ALIEN can be referred to
2157 within other definitions in the same WITH-ALIEN.
2158 * bug fix: division operators (MOD, TRUNCATE and the like) with
2159 constant zero divisors and integer dividends no longer generate
2161 * bug fix: provide default methods for INPUT-STREAM-P and
2162 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2163 * bug fix: improve the detection and resolution of MOP metacycles
2164 (where effective method computation depends on the generic function
2165 having its effective method computed). (reported by Bruno Haible)
2166 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2167 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2168 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2169 * bug fix: pathnames with relative directory components can be
2170 represented relative to default pathnames.
2171 * optimization: in taking the GCD of bignums, reduce the two bignums
2172 to approximately the same size (using Euclid's algorithm) before
2173 applying the more sophisticated binary GCD. (thanks to Juho
2175 * optimization: COUNT on bitvectors now operates word-at-a-time.
2176 * optimization: ASH with a positive, but not necessarily constant,
2177 (leftwards) shift, when in a modular context, is compiled to a
2179 * fixed some bugs revealed by Paul Dietz' test suite:
2180 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2181 if the corresponding argument is NIL.
2182 ** FORMAT directives accepting a minpad parameter treat negative
2184 ** literal commas as character parameters to FORMAT directives are
2186 ** literal spaces directly after ~<Newline> directives within a
2187 format-logical-block (~:< ~@:>) do not induce :FILL-style
2188 conditional newlines.
2189 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2190 as specified: it no longer includes conditional newlines).
2191 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2193 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2194 :PER-LINE-PREFIX argument does not evaluate to a string.
2196 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2197 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2198 the manual for details; for now, package locks can be disabled by
2199 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2200 if no major problems are found then it is likely that they will be
2201 compiled in unconditionally.
2202 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2203 unsupported operators on all platforms. To load a shared library
2204 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2205 object file, link it into a shared library outside of SBCL and
2206 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2208 * bug workaround: ROOM T and the GC were not working together
2209 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2210 reporting facility aren't preserved. That reporting has been
2211 disabled, so now until and unless someone figures out how to make it
2212 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2213 * minor incompatible change: as threatened around sbcl-0.8.0, the
2214 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2215 The symbols are also exported from SB-PCL for backwards
2216 compatibility, but more so than before SB-PCL should be treated as
2217 an implementation-internal package.
2218 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2220 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2221 It is known as of this release not to work on the Alpha, however.
2222 * fixed bug #167: errors signalled due to illegal syntax in method
2223 bodies are now more legible.
2224 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2225 designators and can hence be used with TYPEP.
2226 * fixed bug #333: CHECK-TYPE now ensures that the type error
2227 signalled, if any, has the right object to be accessed by
2228 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2229 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2230 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2232 * fixed bug #334: programmatic addition of slots using specialized
2233 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2234 and :ALLOCATION :CLASS slots.
2235 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2236 float exponents. (rereported by Peter Seibel)
2237 * fixed a bug: #\Space (and other whitespace characters) are no
2238 longer considered to be macro characters in standard syntax by
2239 GET-MACRO-CHARACTER.
2240 * fixed bug: initialization of condition class metaobjects no longer
2241 causes an instance of the condition to be created. (reported by
2243 * fixed bug: it is now possible to have slots such that
2244 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2245 description is neither :INSTANCE nor :CLASS.
2246 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2247 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2248 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2249 non-standard SLOT-DEFINITION-ALLOCATION values.
2250 * fixed bugs: various race conditions handling exiting threads.
2251 CL-PPCRE's thread torture test now passes.
2252 * fixed arguably-a-bug: GC time proportional to number of threads in
2253 system even when most of them are idle
2254 * optimization: improved performance of BIT and SBIT on bit-vectors.
2255 * .fasl file incompatibility: The fasl file version number has
2256 been incremented because of changes associated with package locks.
2258 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2259 * minor incompatible change: the system no longer provides
2260 optimization hints (conditions which are TYPEP
2261 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2262 mode; these hints are still emitted when higher SPEED optimization
2264 * new contrib module: a sampling profiler (profiling by statistical
2265 sampling, rather than by instrumenting functions) is available as
2266 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2267 * the behaviour of the standard function ED is now customizeable by
2268 third parties through a hook variable: see ED's documentation
2269 string for information on the protocol.
2270 * the compiler no longer emits efficiency notes for (FUNCALL X)
2271 when the type of X is uncertain under default optimization
2273 * fixed bug 276: mutating a binding of a specialized parameter to a
2274 method to something that is not TYPEP the specializer is now
2276 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2277 exhibit the required behaviour on the x86 platform. (thanks to
2278 Peter van Eynde, Eric Marsden and Bruno Haible)
2279 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2280 even for difficult arguments. (reported by Peter Graves)
2281 * fixed bug 141a: the backquote printer now descends quoted
2283 * fixed another bug in backquote printing: no more destructive
2284 modification of the form's list structure. (reported by Brian
2286 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2287 move between its address being taken and the call to
2288 interrupt_thread, fixing a crashing race condition.
2289 * the SB-POSIX contrib implementation has been adjusted so that it
2290 no longer exhibits ridiculously poor performance when constructing
2291 instances corresponding to C structs.
2293 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2294 * minor incompatible change: the sb-grovel contrib now treats C
2295 structures as alien (in the sense of SB-ALIEN) objects rather than
2296 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2297 has implications for memory management of client code
2298 (sb-grovel-returned objects must now be manually managed) and for
2299 type safety (alien objects now have full types).
2300 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2301 used to control emission of compiler diagnostics, rather than the
2302 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2303 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2304 quality should be considered deprecated.
2305 * install.sh now installs the user manual as well
2306 * (not quite a new documentable feature, but worth considering in
2307 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2308 beginnings of a semantically meaningful condition hierarchy is
2309 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2311 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2312 designator as the defaults argument.
2313 * fixed bug: Displaced arrays whose displaced-to array has become
2314 too small now cause ARRAY-DIMENSION to signal an error, providing
2315 for safer bounds-checking. (reported by Bruno Haible)
2316 * fixed bug: DEFCLASS slot definitions with identical :READER and
2317 :WRITER names now signal a reasonable error. (reported by Thomas
2319 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2321 * fixed bug: Invalid slot specification errors now print correctly.
2322 (thanks to Zach Beane)
2323 * fixed bug 320: Shared to local slot value transfers in class
2324 redefinitions now happen corrently from superclasses as
2325 well. (reported by Bruno Haible)
2326 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2328 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2329 improper lists correctly. (reported by Bruno Haible)
2330 * fixed bug 313: source-transform for <fun-name> was erroneously
2331 applied to a call of a value of a variable with name <fun-name>.
2332 (reported by Antonio Menezes Leitao)
2333 * fixed bug 307: The obsolete instance protocol ensures that
2334 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2335 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2336 remove dead unknown-values globs from the middle of the stack.
2337 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2338 easier to resume long computations after using *BREAK-ON-SIGNALS*
2339 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2340 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2341 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2342 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2343 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2344 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2346 * fixed a (fairly theoretical) bug in string printing: if
2347 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2348 does not have array-element-type equal to the most general string
2350 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2351 function name. (thanks to Nikodemus Siivola)
2352 * fixed bug: compile-time format string checker failed on
2353 non-closed ~{. (reported by Thomas F Burdick)
2354 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2355 don't warn on legal loop code involving more than one aggregate
2356 boolean. (thanks to Nikodemus Siivola)
2357 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2358 in keyword position to MAKE-PACKAGE was not being reported as
2360 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2361 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2363 * fixed bugs 280 and 312: the checking for multiple definitions in a
2364 file is less likely to become confused by uses of inline
2366 * fixed bug: the #S reader macro performs the keyword coercion
2367 specified for slot names. (reported by Kalle Niemitalo)
2368 * fixed bug: lambda lists may contain symbols whose names start with
2369 & but are not lambda-list-keywords; their occurrence triggers a
2371 * fixed bug 321: define-method-combination argument lambda lists do
2372 not cause invalid code to be generated when &optional or &aux
2373 variables have default values. (reported by Bruno Haible)
2374 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2375 have CLOS classes; this appears also to have fixed reported
2376 instability in stack exhaustion detection.
2377 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2378 MUFFLE-WARNING when no associated restart is present is now
2380 * optimization: rearranged the expansion of various defining macros
2381 so that each expands into only one top-level form in a
2382 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2384 * optimization: used a previously little-used slot in symbols to
2385 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2387 * fixed some bugs revealed by Paul Dietz' test suite:
2388 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2390 ** Fixed an optimization bug related to inheritance of initforms
2391 from local to shared slots.
2392 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2393 ** CAST optimizer forgot to flush argument derived type.
2394 ** print/read consistency on floats is now orders of magnitude
2395 more likely. (thanks also to Bruno Haible for a similar report
2397 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2398 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2399 for objects of type REAL. Make it so.
2400 ** SXHASH is specified (infelicitously) to respect similarity,
2401 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2402 it so. (thanks to Markus Ziegler)
2403 ** on the Alpha, the compiler succeeds in compiling functions
2404 returning a known number of arguments greater than 63.
2405 ** fixed handling of invalid NIL arguments in keyword position
2407 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2409 ** provided a readably-printable representation for RANDOM-STATE
2411 ** ensured that pathnames, where they have a namestring, always
2412 print using #P"..." syntax.
2414 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2415 * Support for the forthcoming 2.0 version of the NetBSD kernel
2416 running on x86 hardware has been added. (thanks to Perry
2417 E. Metzger most immediately, and others for their past work)
2418 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2419 current release version; SBCL's OpenBSD support had been broken
2420 since about the time of OpenBSD's switch to ELF binary format.)
2421 * [placeholder for DX summary]
2422 ** user code with &REST lists declared dynamic-extent, under high
2423 speed or space and low safety and debug optimization policy.
2424 * The manual has been converted to Texinfo format and the debugger
2425 chapter from the cmucl manual has been added.
2426 * A facility has been added to extract documentation strings from
2427 sbcl and store them as Texinfo-formatted snippets for inclusion in
2428 the manual (via Texinfo's @include directive)
2429 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2430 the test case to Dave Roberts)
2431 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2432 pointers. (reported by Sean Ross)
2433 * bug fix: PROFILE output is printed nicely even for large numerical
2434 values. (thanks to Zach Beane)
2435 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2436 greater than 32 handle EOF correctly.
2437 * bug fix: on X86 an immediate argument of the IMUL instruction is
2438 correctly printed in disassembly. (thanks to Lutz Euler)
2439 * bug fix: class slots in redefined classes preserve their old
2440 values. (thanks to Bruno Haible and Nikodemus Siivola)
2441 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2442 succeeds. (reported by Marco Baringer)
2443 * fixed some bugs revealed by Paul Dietz' test suite:
2444 ** READ-SEQUENCE now works on ECHO-STREAMs.
2445 ** RATIONALIZE works more according to its specification. (thanks
2448 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2449 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2450 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2451 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2452 should matter to you only if you rebind the printer control
2453 variables and then find you want different bindings in the
2454 debugger than in the ordinary execution of your program.)
2455 * The runtime build system has been tweaked to support building
2456 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2457 assembler and linker. (thanks to Nikodemus Siivola)
2458 * Unbound, undefined, undeclared variables now trigger full
2459 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2460 more often programmer error than deliberate exploitation of undefined
2462 * optimization: the hash algorithm for strings has changed to one
2463 that is less vulnerable to spurious collisions. (thanks to Juho
2465 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2466 needless bounds checking. (thanks to Juho Snellman)
2467 * optimization: implemented multiplication as a modular
2468 (UNSIGNED-BYTE 32) operation on the PPC backend.
2469 * fixed some bugs revealed by Paul Dietz' test suite:
2470 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2472 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2473 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2474 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2476 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2478 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2480 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2481 their output stream on EOF from read.
2482 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2483 have been read to end-of-file.
2484 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2486 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2487 description of determination of which consecutive characters
2489 ** Printing the "Space" character with escaping on now yields "#\\ ",
2490 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2491 ** Reading floating-point numbers with *READ-BASE* set to a number
2492 less than 10 works correctly.
2493 ** Reading floating-point numbers with *READ-BASE* set to a number
2494 more than 10 works correctly.
2495 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2496 the readtable currently in effect.
2498 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2499 * minor incompatible change: parsing of namestrings on a physical
2500 (Unix) host has changed; numbers after the final #\. in a
2501 namestring are no longer interpreted as a version field. This is
2502 intented to be largely invisible to the user, except that the
2503 meaning of the namestring "*.*.*" has changed: it now refers to a
2504 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2505 should usually be replaced by
2506 (make-pathname :name :wild :type :wild :version :wild)
2507 with the added benefit that this is more likely to be portable.
2508 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2509 option to OPEN now signals an error if the file being opened
2510 exists; this may have an impact on existing code.
2511 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2512 signals received, on the PowerPC platforms (both Linux and
2513 Darwin). (thanks to Pierre Mai for pointing out the location of
2515 * several fixes on OS X: The system now builds and runs cleanly on
2516 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2517 (thanks to Brian Mastenbrook)
2518 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2519 second-resolution: integer multiples of 1/3600 between -24 and 24.
2520 (thanks to Vincent Arkesteijn)
2521 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2522 type when called with 1 argument; PEEK-CHAR checked type of
2523 PEEK-TYPE only after having read first character from a
2524 stream. (reported by Peter Graves)
2525 * bug fix: the garbage collector now has much better locality
2526 behaviour, and in particular no longer treats all memory as being
2527 exhausted when many small objects point to each other in a deeply
2529 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2530 recognized as being TYPEP their class.
2531 * bug fix: the PUSHNEW documentation string has been corrected.
2532 (thanks to Vincent Arkesteijn)
2533 * bug fix: defaulting of the value for the last of an atypically
2534 large number of multiple values being bound was not being
2535 performed correctly on the Alpha or PPC platforms
2536 * optimization: implemented multiplication as a modular
2537 (UNSIGNED-BYTE 32) operation on the x86 backend.
2538 * optimization: SEARCH on simple-base-strings can now be open-coded.
2539 (see also contrib/compiler-extras.lisp for inspiration for
2540 teaching the compiler about the Boyer-Moore algorithm).
2541 * value, returned by MAX (and MIN) called with several EQUALP, but
2542 not EQL, arguments now does not depend on compiler settings.
2543 * fixed some bugs revealed by Paul Dietz' test suite:
2544 ** in stack analysis liveness information is propagated from
2545 non-local entry points.
2546 ** pathwise CAST removing failed when the CAST node did not start
2548 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2549 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2551 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2552 host is already defined.
2553 ** RENAME-FILE works on streams instead of signalling an internal
2555 ** PEEK-CHAR uses the current readtable when determining whether
2556 or not a character is whitespace.
2557 ** MERGE-PATHNAMES handles the case when the pathname does not
2558 specify a name while the default-pathname specifies a version.
2559 ** Pathnames now stand a better chance of respecting print/read
2561 ** Attempting to use standardized file system operators with a
2562 pathname with invalid :DIRECTORY components signals a
2564 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2566 ** DIRECTORY on logical pathnames is more correct.
2567 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2568 signal a TYPE-ERROR if their argument is not a stream.
2569 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2570 designator argument does not designate a stream.
2571 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2572 examining the synonym.
2573 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2575 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2576 element-type larger than ([UN]SIGNED-BYTE 32).
2578 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2579 * When built with the :SB-FUTEX feature, threaded builds now take
2580 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2581 for faster/more reliable mutex and condition variable support.
2582 * Incompatible change (but one you probably shouldn't have been using
2583 anyway): the interface and code for arbitrating between multiple
2584 threads in the same user session has been redesigned.
2585 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2586 error when called without an explicit environment argument.
2587 (thanks to Nikodemus Siivola)
2588 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2589 confused about their position. (thanks to Adam Warner and Gerd
2591 * bug fix: Pretty printing backquoted forms with unquotations in the
2592 argument list position of various code constructs such as LAMBDA
2593 now works correctly. (reported by Paul Dietz)
2594 * bug fix: Pretty printing unquotations no longer loses all
2595 stream position information.
2596 * optimization: performance of string output streams is now less
2597 poor for multiple small sequence writes.
2598 * optimization: performance of CSUBTYPEP in the presence of complex
2599 expressions involving CONS and NOT many times has been improved.
2600 (reported by Paul Dietz)
2601 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2603 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2604 streams for the REPL, for the debugger, and so on. (thanks to
2606 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2607 * fixed some bugs revealed by Paul Dietz' test suite:
2608 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2609 is ignored if it is too small, rather than propagating through
2610 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2611 ** extremely complex negations of CONS types were not being
2612 sufficiently canonicalized, leading to inconsistencies in
2614 ** VALUES tranformer lost derived type.
2616 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2617 * fixed a bootstrapping bug: the build process no longer assumes
2618 that the various BOOLE-related constants have the same value in
2619 host and target lisps. (noted by Paul Dietz' test suite on an
2620 SBCL binary built from CLISP)
2621 * The system can now be dynamically linked on the MIPS platform,
2622 which enables dynamic loading of foreign code from Lisp. (thanks
2623 to Ralf Baechle for discussions on the MIPS ABI)
2624 * The system now records debugging information for its own source
2625 files in a filesystem-position-independent manner, relative to
2626 the "SYS" logical host.
2627 * fixed a compiler bug: MV-LET convertion did not check references
2628 to the "max args" entry point. (reported by Brian Downing)
2629 * tweaked disassembly notes to be less confident about proclaiming
2630 some instruction as an LRA. (thanks to Brian Downing)
2631 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2632 now each have their own history, command character, and other
2633 characteristics. (thanks to David Lichteblau)
2634 * fixed some bugs revealed by Paul Dietz' test suite:
2635 ** compiler failure in compiling LOGAND expressions including a
2637 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2638 shift greater than 32.
2639 ** FLUSH-DEST did not mark blocks for type check regeneration.
2640 ** HANDLER-CASE failed to accept declarations in handler clauses
2641 in some circumstances.
2643 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2644 * New code in contrib/sb-introspect (still probably not entirely
2645 stable yet) provides some support for smart Lisp development
2646 environments like SLIME.
2647 * The conditions signalled for errors occurring when loading .fasl
2648 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2649 in a way which should help ASDF recover gracefully.
2650 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2651 stuff has been cleaned up. If you code contrib/ stuff, this might
2652 affect you, and you can look at contrib/README, contrib/STANDARDS,
2653 and/or the 0.8.4.27 diff to check.
2654 * In full calls the compiler now does not generate checks for declared
2655 argument types for all arguments.
2656 * various threading fixes
2657 ** and some experimental patches which didn't make it into
2658 the main tree for this release, but which are shipped in
2659 contrib/experimental-thread.patch as a possible fix for some
2660 failures (deadlock, spinning...) in GC-intensive multithreaded
2662 * fixed PPC build problem (source code incompatibility of different
2663 library versions): added offsetof() hackery which attempts to divine
2664 where glibc maintainers put uc_mcontext today
2665 * fixed bug 282: compiler does not trust type assertions while passing
2666 arguments to a full call.
2667 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2668 &OPTIONAL VALUES type parameter.
2669 * fix bug 214: algorithm for noting rejected templates is now more
2670 similar to that of template seletion. (also reported by rydis on
2672 * fixed bug 141b: printing backquoted information readably and prettily
2673 inserts a space where necessary.
2674 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2675 (CHARACTER 10) are now reported as errors, rather than propagated
2676 as unknown types. (reported by piso on #lisp)
2677 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2678 with values NIL and :ERROR. (thanks to Milan Zamazal)
2679 * fixed bug 191c: CLOS now does proper keyword argument checking as
2680 described in CLHS 7.6.5 and 7.6.5.1.
2681 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2682 longer raise an error; further, using a list as a for-as-arithmetic
2683 counter now raises a meaningful error.
2684 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2685 now understood by sequence creation functions such as MAKE-SEQUENCE
2687 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2688 a STRING-INPUT-STREAM.
2689 * compiler enhancement: SIGNUM is now better able to derive the type
2691 * type declarations inside WITH-SLOTS are checked. (reported by
2693 * fixed some bugs revealed by Paul Dietz' test suite:
2694 ** incorrect optimization of TRUNCATE for a positive first
2695 argument and negative second.
2696 ** compiler failure in let-convertion during flushing dead code.
2697 ** compiler failure while deriving type of TRUNCATE on an
2698 interval, containing 0.
2699 ** ASH of a negative bignum by a negative bignum count now returns
2701 ** intersection of CONS types now canonicalizes properly, fixing
2702 inconsistencies in SUBTYPEP.
2704 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2705 * incompatible change: The --disable-debugger command line
2706 option now clobbers the debugger at a more fundamental
2707 level, by redefining #'INVOKE-DEBUGGER instead of by
2708 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2709 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2710 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2711 enter the debugger REPL and then suffer recursive errors
2712 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2713 while under the new system, BREAK in --disable-debugger mode
2714 terminates the system just as an unhandled error would.
2715 * fixed compiler performance when processing loops with a step >1;
2716 * bug fix: DOCUMENTATION now retrieves generic function
2717 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2718 support has been systematized, and now supports the methods
2719 specified by ANSI, along with a default method and a method for
2720 slot documentation. (reported by Nathan Froyd)
2721 * bug fix: effective methods associated with a generic function are
2722 no longer cached over a change of that generic function's method
2723 combination. (reported by Andreas Fuchs)
2724 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2725 names a non-existent directory. (thanks to Andreas Fuchs)
2726 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2727 the PPC platform, lead to stack corruption; this has been fixed.
2728 (reported by Rainer Joswig)
2729 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2730 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2731 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2732 arithmetic in general, is now much more reliable on the PPC
2734 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2735 platform now returns the right answer.
2736 * optimization: restored some effective method precomputation in
2737 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2738 precomputation is now tunable.
2739 * optimization: compiler-internal data structure use has been
2740 reviewed, and changes have been made that should improve the
2741 performance of the compiler by about 20%.
2742 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2743 simple-base-strings and simple-bit-vectors is improved.
2744 * optimization: the optimization of 32-bit logical and arithmetic
2745 functions introduced in version 0.8.3 on the x86 has been
2746 implemented on the mips, ppc and sparc platforms; an
2747 implementation of the same facility, but for 64-bit arithmetic,
2748 has been added for the alpha.
2749 * microoptimization: the compiler is better able to make use of the
2750 x86 LEA instruction for multiplication by constants.
2751 * bug fix: in some situations compiler did not report usage of
2752 generic arithmetic in (SPEED 3) policy.
2753 * bug 145b fix: compiler used wrong type specifier while converting
2754 MEMBER-types to numeric.
2755 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2757 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2758 index argument now works properly on the Alpha platform.
2759 * bug fix: floating point exception treatment on the Alpha platform
2761 * bug fix: FILE-POSITION works much better on string input and
2762 output streams. (thanks to Nikodemus Siivola)
2763 * bug fix: many threading/garbage collection symptoms sorted.
2764 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2765 might be pseudo-atomic.
2766 * internal change: Stopping for GC is now done with signals not
2767 ptrace. GC is now done in whichever thread wanted it, instead of
2769 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2771 * bug fix: result form in DO is not contained in the implicit
2773 * incompatible change: ICR structure is changed; the value part of
2774 CONTINUATION is now called LVAR; corresponding functions are
2775 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2776 * added type deriver for ISQRT (thanks to Robert E. Brown).
2777 * bug fix: better support for loading from the command line when an
2778 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2780 * fixed some bugs revealed by Paul Dietz' test suite:
2781 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2782 ** ROUND and FROUND now give the right answer when given very
2783 small float arguments.
2784 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2786 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2787 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2788 ** LCM should return a non-negative integer.
2789 ** PARSE-INTEGER returned the index of a terminator instead of the
2790 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2791 ** PARSE-INTEGER returned an incorrect index being applied to a
2793 ** LCM with two arguments of 0 returns 0 rather than signalling
2795 ** unsigned addition of a 32-bit constant with the high bit set no
2796 longer causes an internal compiler error on the x86.
2797 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2798 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2799 with negative last argument.
2800 ** byte specifiers with zero size and position no longer cause
2801 an error during type derivation.
2802 ** bignum multiplication on the Alpha platform now returns the
2804 * porting: The system now builds on SuSE AMD64, although it still
2805 generates a 32-bit binary.
2806 * .fasl file incompatibility: The fasl file version number has
2807 been incremented (because of the changes to internal compiler
2808 data structures referred to above).
2810 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2811 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2812 more accurately, on the Darwin kernel running on PowerPC hardware.
2813 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2814 * Compiler code deletion notes now signal a condition of type
2815 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2816 an associated MUFFLE-WARNING restart.
2817 * The compiler now performs limited argument count validation of
2818 constant format strings in FORMAT, and where appropriate in ERROR,
2819 CERROR and WARN. (thanks to Gerd Moellmann)
2820 * New ASDF-INSTALL contrib can be used for automatic download and
2821 installation of third-party Lisp code from CCLAN or other sites
2823 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2824 which forces another thread to execute a function supplied by the
2826 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2827 now accept and act upon their :ELEMENT-TYPE keyword argument.
2828 (reported by Martin Atzmueller, Edi Weitz)
2829 * bug fix: FILE-POSITION now accepts position designators up to
2830 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2831 is the greater. (thanks to Patrik Nordebo)
2832 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2833 Kalle Olavi Niemitalo)
2834 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2835 printable. (reported by Eric Marsden)
2836 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2837 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2838 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2839 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2840 (thanks to Stig Sandoe)
2841 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2842 UNREAD-CHAR now correctly includes the unread character in the
2843 target sequence. (thanks to Gerd Moellmann)
2844 * bug fix in threaded builds: the system can now be suspended and
2845 resumed by shell job control with minimal disruption.
2846 * bug fixes in times and timezones >2038AD
2847 * better handling of "where is GNU make?" problem in build scripts
2848 (thanks to Nikodemus Siivola)
2849 * new optimization: inside a named function any reference to a
2850 function with the same name is considered to be a self-reference;
2851 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2852 optimization quality.
2853 * new optimization on x86: logical functions and + now have
2854 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2855 used when the result is truncated to 32 bits.
2856 * VALUES declaration is partially enabled.
2857 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2858 * fixed some bugs revealed by Paul Dietz' test suite:
2859 ** The system now obeys the constraint imposed by
2860 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2861 types form a lattice under type intersection.
2862 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2863 ** ASSOC now ignores NIL elements in an alist.
2864 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2865 and (1+ MOST-POSITIVE-FIXNUM) answers.
2866 ** The addition of a method with invalid qualifiers to a generic
2867 function does not cause an error to be signalled immediately;
2868 a warning is signalled, and the error is generated only on
2869 calling the generic function.
2870 * changed .fasl file version number, in part to add type codes for
2871 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2872 obscure ANSI requirements
2874 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2875 * fixed bug 148: failure to inline-expand a local function left
2876 garbage, confusing the compiler.
2877 * fixed bugs 3cd: structure slot readers perform type check if the
2878 slot can have an invalid value (i.e. it is either not initialized
2879 or can be written with a less specific slot writer).
2880 * bug fix: the compiler now traps array references to elements off
2881 the end of an array; previously, the bounds checking in some
2882 circumstances could go off-by-one.
2883 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2885 * type declarations for array element types now obey the description
2886 on the CLHS page "Declaration TYPE", as per discussions on
2887 sbcl-help around 2003-05-08. This means that a declaration
2888 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2889 declaration, all references to BAR will be asserted or assumed
2890 (with THE, so dependent on compiler policy) to involve objects of
2891 type FOO. Note that no such declaration is implied in
2892 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2893 * declared types of functions from the "Conditions"
2894 chapter. (reported by Paul Dietz)
2895 * bug fix: CERROR accepts a function as its first argument.
2896 * bug fix: NTH an NTHCDR accept a bignum as index
2897 arguments. (reported by Adam Warner)
2898 * optimization: character compare routines now optimize comparing
2899 against a constant character. (reported by Gilbert Baumann)
2900 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2901 argument now works properly on the MIPS platform.
2902 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2903 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2904 declared to have a functional type, does not cause an error
2906 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2907 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2908 * fixed bug: if last continuation of a deleted block has a
2909 destination, this destination should be deleted too. (reported by
2911 * fixed a bug in the bootstrap process: the host compiler's values
2912 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2913 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2914 test case from Patrik Nordebo)
2915 * improved the ability of the disassembler on the PPC platform to
2916 provide helpful disassembly notes.
2917 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2918 the class in more cases than previously.
2919 * bug fix: FILE-POSITION now understands :START and :END for
2920 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2921 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2922 8) data. (thanks to David Lichteblau)
2923 * bug fix: it is possible to add a method to a generic function
2924 without lambda list.
2925 * bug fix: reader failed to signal END-OF-FILE inside an
2926 object representation. (reported by Nikodemus Siivola)
2927 * fixed some bugs revealed by Paul Dietz' test suite:
2928 ** LAST and [N]BUTLAST should accept a bignum.
2929 ** condition slot accessors are methods.
2930 ** (VECTOR NIL) is a subtype of STRING.
2932 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2933 * minor incompatible change: some nonsensical specialized lambda
2934 lists (used in DEFMETHOD) which were previously ignored now signal
2936 * minor incompatible change: the system is now aware of the types of
2937 variables in the COMMON-LISP package, and will signal errors for
2938 most violations of these type constraints (where previously they
2939 were silently accepted).
2940 * minor incompatible change: COMPILE-FILE now uses the freedom
2941 afforded (ANSI 3.2.2.3) to use derived function types for
2942 functions defined in the same file. This also permits the system
2943 to warn on static type mismatches and function
2944 redefinition. (Currently it does not work with high DEBUG level.)
2945 * minor incompatible change: VALUES declaration is disabled.
2946 * When issuing notes, the compiler now signals a condition of type
2947 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2948 restart for use in user handlers. It is expected that the
2949 COMPILER-NOTE condition will eventually become a condition
2950 supertype to a hierarchy of note types, which will then be
2951 handleable in a similar fashion. However, at the moment, no such
2952 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2953 but it's an implementation detail, not a classification for the
2955 * Changes in type checking closed the following bugs:
2956 ** type checking of unused values (192b, 194d, 203);
2957 ** template selection based on unsafe type assertions (192c, 236);
2958 ** type checking in branches (194bc).
2959 * A short form of VALUES type specifier has ANSI meaning (it has
2960 increased the number of situations when SBCL cannot perform type
2962 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2963 keywords or constants is permissible.
2964 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2965 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2966 classes. (thanks to Antonio Martinez)
2967 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2968 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2969 argument to a pretty-print stream. Instead, it leaves any such
2970 operations to DESCRIBE-OBJECT methods.
2971 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2973 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2974 lambda lists. (thanks to David Lichteblau)
2975 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2976 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2977 (thanks to Gerd Moellmann)
2978 * fixed bug 246: increased compilation speed of long
2979 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2981 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2983 * DEFCONSTANT now throws a condition of type
2984 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2985 constant to a non-EQL value; CONTINUE and ABORT restarts
2986 respectively change and preserve the value.
2987 * fixed bug 63: The code walker, part of the implementation of CLOS,
2988 is now better at handling symbol macros.
2989 * bug fix: There is no longer an internal implementation type named
2990 CL:LENGTH. (reported by Raymond Toy)
2991 * bug fix: In macro-like defining macros/special operators the
2992 implicit block does not enclose the lambda list.
2993 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2994 enclosed in parentheses) are not suitable as type specifiers, and
2995 their use properly signals an error now.
2996 * bug fix: An argument count mismatch for a type specifier in code
2997 being compiled no longer causes an unhandled error at compile
2998 time, but signals a compile-time warning.
2999 * fixed simple vector readable printing
3000 * bug fix: DESCRIBE takes more care over whether the class
3001 precedence list slot of a class is bound before accessing it.
3002 (reported by Markus Krummenacker)
3003 * bug fix: FORMATTER can successfully compile pretty-printer format
3004 strings which use variants of the ~* directive inside.
3005 * bug fix: SEARCH now applies its TEST predicate to the elements of
3006 the arguments in the correct order. (thanks to Wolfhard Buss)
3007 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3008 in type inference. (thanks to Robert E. Brown)
3009 * bug fix: Reading in symbols with an explicit package name of ""
3010 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3011 * fixed some bugs revealed by Paul Dietz' test suite:
3012 ** NIL is now allowed as a structure slot name.
3013 ** Arbitrary numbers, not just REALs, are allowed in certain
3014 circumstances in LOOP for-as-arithmetic clauses.
3015 ** Multiple class redefinitions before slot access no longer
3016 causes a type error.
3017 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3018 association between the name and a class.
3019 ** Generic functions with non-standard method-combination and over
3020 five methods all of which return constants no longer return NIL
3021 after the first few invocations. (thanks to Gerd Moellmann)
3022 ** CALL-NEXT-METHOD with no arguments now passes the original
3023 values of the arguments, even in the presence of assignment.
3024 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3026 ** DISASSEMBLE works with closures and funcallable instances.
3027 ** ADD-METHOD now returns the generic function, not the new method.
3028 ** FIND-METHOD signals an error if the lengths of the specializers
3029 is incompatible with the generic function, even if the ERRORP
3031 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3032 which its argument is a member.
3033 ** DEFCLASS only redefines the class named by its class-name
3034 argument if that name is the proper name of the class;
3035 otherwise, it creates a new class.
3036 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3037 of the UNBOUND-SLOT condition to the name of the slot.
3038 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3039 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3040 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3041 SLOT-MAKUNBOUND in the specified fashion.
3043 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3044 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3045 cross-compilation host. As a consequence, we can now bootstrap our
3046 way up to SBCL starting with a bare gcc toolchain and human-readable
3047 source code (first the source to CLISP, then the source to SBCL).
3048 * A contributed module containing a partial implementation of the
3049 simple-streams interface has been included. (thanks to Rudi
3051 * A contributed module implementing the RFC1321 Message Digest
3052 Algorithm, known as MD5, has been included.
3053 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3054 no longer has any effect, as the code controlled by this feature
3055 has been deleted. (As far as we know, no-one has ever built using
3056 this feature, and its semantics were confused in any case).
3057 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3058 work on conditions (as required by the ANSI specification),
3059 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3060 expected behaviour on conditions. Users should note, however,
3061 that such behaviour is not required by the ANSI specification,
3062 and so use of this behaviour may render their code unportable.
3063 * fixed some bugs revealed by Paul Dietz' test suite:
3064 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3066 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3067 ** SXHASH on condition objects no longer returns NIL.
3068 ** :ALLOCATION :CLASS slots are better treated; their values are
3069 updated on class redefinition, and initforms inherited from
3070 superclasses are applied.
3071 ** REMOVE-METHOD returns its generic function argument even when
3072 no method was removed.
3073 ** SHARED-INITIALIZE now initializes the values of the requested
3074 slots, including those with :ALLOCATION :CLASS.
3075 ** ALLOCATE-INSTANCE now works on structure classes defined via
3076 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3078 ** SLOT-EXISTS-P now works on conditions, as well as structures
3080 ** MAKE-LOAD-FORM now has the required methods on
3081 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3082 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3083 keyword, and now implements the SLOT-NAMES argument.
3084 ** methods with &OPTIONAL arguments no longer allow too many
3085 arguments to be passed in the call without error.
3086 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3087 option is consistent with the required arguments of the generic
3088 function lambda list.
3089 * bug fix: REQUIRE accepts a string designator. (Thanks to
3091 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3092 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3093 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3094 * bug fix: The compiler now checks for duplicated variables in macro
3096 * bug fix: SETQ on globals returns the correct value.
3097 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3098 not a COMPILER-ERROR (followed by some other strange error on
3099 choosing the CONTINUE restart).
3100 * bug fix: make.sh and friends are now more consistent in the way that
3101 they look for GNU "make".
3103 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3104 * experimental native threads support (on x86 Linux >=2.4 only).
3105 This is not compiled in by default: you need to add :SB-THREAD to
3106 the target features. See the "Beyond ANSI" chapter of the manual
3108 * fix for longstanding nonANSIism: The old distinction between
3109 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3110 The return value from CL:FIND-CLASS is now a CLOS class, and
3111 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3112 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3113 * An interface to the MetaObject Protocol, as described in Kiczales,
3114 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3115 MIT Press, 1991, is available from the SB-MOP package.
3116 * incompatible change: the SB-PCL package should now be considered
3117 a private implementation detail, and no longer a semi-private MOP
3119 * minor incompatible change: due to rearrangement for threads, the
3120 control stack and binding stack are now allocated at arbitrary
3121 addresses instead of being hardcoded per-port. Users affected by
3122 this probably have to be doing advanced things with shared
3123 libraries, and will know who they are.
3124 * minor incompatible change: Previously, all --eval forms used were
3125 processed with READ before any of them were processed with EVAL.
3126 Now each --eval form is processed with both READ and EVAL before
3127 the next --eval form is processed. (Thus package operations like
3128 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3129 work as the user might reasonably expect.)
3130 * minor incompatible change: *STANDARD-INPUT* is now only an
3131 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3133 * minor incompatible change: Y-OR-N-P is now character-oriented,
3134 not line oriented. Also, YES-OR-NO-P now works without errors.
3135 (thanks to Antonio Martinez)
3136 * sb-aclrepl module improvements: an integrated inspector, added
3137 repl features, and a bug fix to :trace command.
3138 * Known functions, which cannot be open coded by the backend, are
3139 considered to be able to check types of their arguments. (fixing
3140 a bug report by Nathan J. Froyd)
3141 * fixed a bug in computing method discriminating functions: It is
3142 now possible to define methods specialized on classes which have
3143 forward-referenced superclasses. (thanks to Gerd Moellmann)
3144 * fixed evaluation order in optional entries (reported by Gilbert
3146 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3147 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3148 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3149 required-by-AMOP NAME argument, as well as CLASS and
3150 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3151 * fixed bug 20: DEFMETHOD can define methods using names that are
3152 not the proper names of classes to designate class specializers.
3153 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3154 Unix file descriptors, instead of blowing up. (thanks to Antonio
3156 * Garbage collection refactoring: user-visible change is that a
3157 call to the GC function during WITHOUT-GCING will not do garbage
3158 collection until the end of the WITHOUT-GCING. If you were doing
3159 this you were probably losing anyway.
3160 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3161 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3162 TYPEP the latter but not the former.
3163 * The compiler issues a full WARNING for calls to undefined functions
3164 with names from the CL package.
3165 * MAP-INTO for a vector destination is open coded. (reported by
3166 Brian Downing on c.l.l)
3167 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3168 documentation string.
3169 * fixed some bugs revealed by Paul Dietz' test suite:
3170 ** COPY-ALIST now signals an error if its argument is a dotted
3172 ** Condition slots are now accessed more correctly in the presence
3173 of multiple initargs for a given slot.
3174 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3175 exclude restarts of the same name associated with a different
3177 ** DEFCLASS of forward-referenced classes with another
3178 forward-referenced class in the superclasses list no longer
3180 ** Condition slots are now initialized once each, not multiple
3181 times. (thanks to Gerd Moellmann)
3182 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3184 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3185 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3186 arguments contain duplicated elements.
3187 ** RESTART-CASE understands local macros.
3188 ** RESTART-CASE associates exactly its own restarts with a condition.
3189 ** ENDP in safe mode checks its argument to be of type LIST.
3190 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3191 in question is unbound.
3192 ** Optimized MAKE-INSTANCE functions no longer cause internal
3193 assertion failures in the presence of duplicate initargs.
3194 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3195 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3196 propagated even in the ctor optimized implementation of
3198 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3200 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3201 * a better implementation of SXHASH on (simple) bit vectors,
3202 measured both in execution speed and in distribution of results
3203 over the positive fixnums, has been installed. Likewise, a better
3204 implementation of EQUAL for simple bit vectors is now available.
3205 * fixed CEILING optimization for a divisor of form 2^k.
3206 * fixed bug 240 (emitting extra style warnings "using the lexical
3207 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3208 by Antonio Martinez)
3209 * fixed SXHASH, giving different results for NIL depending on type
3210 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3211 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3212 variable. (found by Rolf Wester)
3213 * SBCL does not ignore type declarations for special
3214 variables. (reported by rif on c.l.l 2003-03-05)
3215 * some bug fixes in contrib/sb-aclrepl/
3216 * fixed some bugs revealed by Paul Dietz' test suite:
3217 ** a bug in the CONS type specifier, whereby the CAR and CDR
3218 types got intertwined, has been fixed;
3219 ** the type system is now able to reason about the interaction
3220 between INTEGER and RATIO types more completely;
3221 ** APPEND, [N]REVERSE and NRECONC check that those their
3222 arguments, which must be proper lists, are really so;
3223 ** An array specialized to be unable to hold elements has been
3224 implemented, as required -- yes, really -- by ANSI;
3225 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3226 on malformed property lists;
3228 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3229 * incompatible packaging change: in line with Unix convention,
3230 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3231 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3232 * REQUIRE and PROVIDE are now optionally capable of doing something
3233 useful. See the documentation string for REQUIRE.
3234 * infrastructure for a managed SBCL contrib system: contributed
3235 modules in this release include:
3236 ** the ASDF system definition facility;
3237 ** an interface to the BSD Sockets API;
3238 ** an ACL-like convenience interface to the repl;
3239 (thanks to Kevin Rosenberg)
3240 ** an implementation of ROTATE-BYTE, with efficient implementation
3242 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3243 gives a closer approximation to the right answer than previously.
3244 (thanks to Raymond Toy)
3245 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3246 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3247 optional environment arguments, as required by ANSI.
3248 * fixed bugs in other functions taking environment objects, allowing
3249 calls with an explicit NIL environment argument to be compiled
3251 * fixed bug 228: primary return values from
3252 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3253 COMPILE or FUNCTION.
3254 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3255 :TYPE will no longer signal errors on innocuous objects.
3256 * fixed bug 231b: SETQ is better at respecting type declarations in
3257 the lexical environment.
3258 * fixed a bug in DEFCLASS: classes named by symbols with no or
3259 unprintable packages can now be defined.
3260 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3261 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3262 * fixed compiler failure related to checking types of functions.
3263 (reported by Robert E. Brown)
3264 * the compiler is now much more consistent in its error-checking
3265 treatment of bounding index arguments to sequence functions: in
3266 (SAFETY 3) code, errors will be signalled in almost all cases if
3267 invalid sequence bounding indices are passed to functions defined
3268 by ANSI to operate on sequences.
3269 * fixed a bug in the build procedure: documentation of SBCL-specific
3270 packages is now preserved and available in the final Lisp image.
3271 * lifted FDEFINITION lookup out of loops in the implementation of
3272 many list operations. (thanks to Robert E. Brown)
3273 * fixed a bug in the reader: the #n# reader macro now works for
3274 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3275 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3276 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3277 E. Brown and Tony Martinez respectively)
3278 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3279 SLOT-BOUNDP: in particular, it is now able to optimize them much
3280 better, and is now not vulnerable to having packages renamed.
3281 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3282 always called when a slot is not present in an instance. (thanks
3284 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3285 longer signal an error on unreading a character following EOF on
3286 the previous constituent stream. (thanks to Tony Martinez)
3287 * fixed some bugs revealed by Paul Dietz' test suite:
3288 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3289 not just nonnegative fixnums;
3290 ** the logical bit-array operators such as BIT-AND now accept an
3291 explicit NIL for their "opt-arg" argument (to indicate a
3292 freshly-consed result bit-array);
3293 ** ELT now signals an error on an invalid sequence index in safe
3295 ** the type system is now cleverer about negations of numeric
3296 types, and consequently understands the BIGNUM and RATIO types
3298 ** the type system is now cleverer about the interaction between
3299 INTEGER and RATIO types: while bugs still remain, many more
3300 cases are accurately computed;
3301 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3302 if it is in the last clause;
3303 ** CONSTANTLY now correctly returns a side-effect-free function in
3305 ** DECLARE is no longer treated as a special-operator; in
3306 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3307 * incremented fasl file version number due to the change in the
3308 DEFSTRUCT-SLOT-DESCRIPTION structure.
3310 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3311 * minor incompatible change: code processed by the "interpreter" or
3312 EVAL now has a compilation optimization policy of (DEBUG 2)
3313 (changed from (DEBUG 1)) to improve debuggability of interactive
3314 development, and to allow the use of the debug RETURN command in
3316 * an experimental implementation of the RETURN command for the
3317 debugger has been included. (thanks to Frederik Kuivinen)
3318 * fixed bug 62: constraints were not propagated into a loop.
3319 * fixed bug in embedded calls of SORT (reported and investigated by
3321 * fixed some bugs revealed by Paul Dietz' test suite:
3322 ** printing and reading of arrays with some dimensions having
3323 length 0 (thanks to Gerd Moellmann);
3324 ** BOA constructor with &AUX argument without a default value does
3325 not cause a type error;
3326 ** CONSTANTP now returns true for all self-evaluating objects.
3328 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3329 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3330 accessors that are related by inheritance, as specified in the
3331 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3332 Valtteri Vuorikoski)
3333 * The compiler is now able to inline functions that were defined in
3334 a complex lexical environment (e.g. inside a MACROLET).
3335 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3337 * Support for the upcoming FreeBSD-5.0 release has been included.
3338 (thanks to Dag-Erling Smorgrav)
3339 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3340 effect when it is not in a toplevel context.
3341 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3342 stand a better chance of being correct. (thanks to Gerd
3344 * fixed bug in COERCE, which now signals an error on coercing a
3345 rational to a bounded real type which excludes the expected
3347 * The compiler is now able to derive types more accurately from the
3348 COERCE and COMPILE functions.
3349 * fixed bug 223: functional binding is considered to be constant
3350 only for symbols in the CL package.
3351 * fixed bug 231: SETQ did not check the type of a variable being set
3352 (reported by Robert E. Brown)
3353 * A new optimization for MAKE-INSTANCE has been included, fixing
3354 various bugs (including relating to :ALLOCATION :CLASS slots and
3355 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3357 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3358 ** As required by ANSI, LOOP now disallows anonymous collection
3359 clauses such as COLLECT I in conjunction with aggregate boolean
3360 clauses such as THEREIS (= I 1);
3361 ** LOOP now signals an error when any variable is reused in the
3362 same loop (including the potentially useful construct analogous
3363 to WITH A = 1 WITH A = (1+ A);
3364 ** IT is only a special loop symbol within the first clause of a
3365 conditional loop clause;
3366 ** LOOP with a typed iteration variable over a hashtable now
3367 signals a type error iff it should.
3368 * fixed some other bugs revealed by Paul Dietz' test suite:
3369 ** FILE-STREAM now names the class previously known as FD-STREAM;
3370 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3371 argument) no longer signals an error;
3372 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3373 of the slot symbol, rather than using the current package
3374 ((:CONC-NAME "") continues to intern the slot's name in the
3376 * incremented fasl file version number, because of the incompatible
3377 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3378 of the new implementation of DEFINE-COMPILER-MACRO.
3380 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3381 * Support for building SBCL for MIPS platforms running in
3382 little-endian mode has now been checked in, and basic
3383 functionality on said platforms verified.
3384 * minor incompatible change: PCL now records the pathname of a file
3385 in which methods and the like are defined, rather than its
3387 * minor incompatible change: TRUENAME now considers the truename of
3388 a file naming a directory to be the pathname with :DIRECTORY
3389 component indicating that directory.
3390 * minor incompatible change: a NAMED clause in the extended form of
3391 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3392 reason for the previous behaviour is unclear.
3393 * more systematization and improvement of CLOS and MOP conformance
3394 in PCL (thanks to Gerd Moellman and Pierre Mai):
3395 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3397 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3398 primary methods with no specializers;
3399 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3401 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3402 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3403 FORWARD-REFERENCED-CLASSes; error reporting on
3404 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3406 ** SXHASH on CLOS instances now uses a slot internal to the
3407 instance to return different numbers on distinct instances,
3408 while preserving the same return value through invocations of
3410 ** DEFMETHOD signals errors when methods with longer incongruent
3411 lambda lists are added to generic functions;
3412 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3413 CLASS, as specified in AMOP;
3414 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3415 on the order returned by the primary method for classes of
3416 class STANDARD-CLASS;
3417 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3418 * fixed some bugs shown by Paul Dietz' test suite:
3419 ** DOLIST puts its body in TAGBODY;
3420 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3422 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3423 value producing form;
3424 ** if more variables are given to PROGV than values, extra
3425 variables are bound and made to have no value;
3426 ** NSUBSTITUTE on list arguments gets the right answer with
3428 ** ELT signals an error of type TYPE-ERROR when the index argument
3429 is not a valid sequence index;
3430 ** LOOP signals (at macroexpansion time) an error of type
3431 PROGRAM-ERROR when duplicate variable names are found;
3432 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3433 ** FUNCALL of special-operators now cause an error of type
3435 ** PSETQ now works as required in the presence of side-effecting
3436 symbol-macro places;
3437 ** NCONC accepts any object as its last argument;
3438 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3440 ** loop-for-as-package does not require a package to be explicitely
3442 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3444 * fixed bug 166: compiler preserves "there is a way to go"
3445 invariant when deleting code.
3446 * fixed bug 172: macro lambda lists with required arguments after
3447 &REST arguments now cause an error to be signalled. (thanks to
3449 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3450 bug. (thanks to Matthew Danish)
3451 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3453 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3454 arguments are lexically rebound. (thanks to Gerd Moellmann and
3456 * fixed bug 194: error messages are now more informative when there
3457 is no primary method applicable in a call to a generic
3458 function. (thanks to Gerd Moellmann)
3459 * fixed bug in command line argument checking (thanks to Julian
3461 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3462 (thanks to Matthew Danish)
3463 * incremented fasl file version number, because of the
3464 SXHASH-related changes in the layout of CLOS data structures
3466 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3467 * minor incompatible change: The runtime (the Unix executable named
3468 "sbcl") is now much pickier about the .core files it will load.
3469 Essentially it now requires .core files to descend from the same
3470 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3471 as the runtime does. (The intent is to prevent the crashes which
3472 can occur, and which can even be reported as mysterious failures,
3473 when people patch the sources or change the build parameters
3474 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3475 sbcl and .core files.)
3476 * fixed bug: VALUES-LIST is no longer optimized away.
3477 * fixed bug 142: The FFI conversion of C string values to Lisp
3478 string values no longer conses excessively. (thanks to Nathan
3479 Froyd porting Raymond Toy's fix to CMU CL)
3480 * began to systematize and improve MOP conformance in PCL (thanks to
3481 Nathan Froyd, Gerd Moellman and Pierre Mai):
3482 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3484 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3485 ** FINALIZE-INHERITANCE is now called on class finalization;
3486 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3487 argument precedence order.
3488 * fixed bug 202: The compiler no longer fails on functions whose
3489 derived types contradict their declared type.
3490 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3491 so it can be non-toplevel.
3492 * The fasl file version number has changed (because of the new
3493 implementation of DEFMACRO).
3494 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3495 safe code, that any length requirement by their type-specifier
3496 argument is valid. The exceptions to this are described in bug
3498 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3499 functions now check the types of their inputs as required by ANSI.
3500 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3501 introduced symbol is DECLAREd to be SPECIAL.
3502 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3503 * fixed bug: :COUNT argument to sequence functions may be negative
3504 * fixed bug: body of DO-SYMBOLS may contain declarations
3505 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3506 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3507 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3508 symbol macro only once
3509 * fixed printing of call frame when argument list is unavailable
3510 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3511 * compiler no longer signals WARNING on unknown keyword
3514 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3515 * A beta-quality port to the mips architecture running Linux,
3516 based on the old CMUCL backend, has been made. It has been tested
3517 on a big-endian kernel, and works sufficiently well to be able to
3518 rebuild itself; it has not been tested in little-endian mode.
3519 * fixed an inconsistency between gencgc.c and purify.c which made
3520 dumping/loading .core files unreliable
3521 * fixed bug 120a: The compiler now deals correctly with IFs where
3522 the consequent is the same as the alternative, instead of
3523 misderiving the return type. (thanks to Alexey Dejneka)
3524 * fixed bug 113: Logical pathnames are now dumpable (the logical
3525 host is resolved at load-time, throwing an error if it is not
3527 * fixed bug 174: FORMAT's error message is slightly clearer when a
3528 non-printing character is used in a format directive.
3529 * fixed several bugs in compiler checking of type declarations, i.e.
3530 violations of the Python "declarations are assertions" principle
3531 (thanks to Alexey Dejneka)
3532 * fixed several bugs in PCL's error checking (thanks to Gerd
3534 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3536 * fixed bug in compilation of functions as first class values
3537 (thanks to Antonio Martinez-Shotton)
3538 * The compiler's handling TYPE-ERRORs which it can prove will
3539 inevitably happen at runtime has been cleaned up and corrected
3540 in several ways. (thanks to Alexey Dejneka)
3541 * improved argument type checking for various basic arithmetic
3542 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3543 lavished on them in the past that they can be compiled in many
3544 ways in different special cases
3545 * fixed bug 181: compiler checks validity of user supplied type
3547 * cleaned up code flushing in optimization: Function calls which
3548 should signal errors for safety purposes (e.g. which ANSI says
3549 should signal errors when their arguments are of incorrect type)
3550 are no longer optimized away.
3551 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3552 * incremented fasl file version number, because changes in the
3553 implementation of sequence functions like COERCE caused
3554 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3555 in old inline expansions) to become undefined. (Actually these
3556 changes were later undone, so we might very well be binary
3557 compatible with 0.7.7 after all, but leaving the version number
3558 incremented seemed like the simplest and most conservative
3561 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3562 * An alpha-quality port to the parisc architecture running Linux,
3563 based on the old CMUCL backend, has been made. This, even more so
3564 than the other backends, should be considered still a work in
3565 progress; known problems include that the Linux kernel in 64-bit
3566 mode does not propagate the correct sigcontext structure to
3567 userspace, and consequently SBCL on a parisc64 kernel will not
3569 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3570 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3571 suppressed.) Also now that the compiler is looking at declarations
3572 in the environment, it checks optimization declarations as well,
3573 and suppresses inlining when (> DEBUG SPEED).
3574 * More fixes have been made to treatment of floating point exception
3575 treatment and other Unix signals. In particular, floating point
3576 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3577 * The detection and handling of control stack exhaustion (infinite
3578 or very deeply nested recursion) has changed. Stack exhaustion
3579 detection is now done by write-protecting pages at the OS level
3580 and applies at all optimization settings; when found, a
3581 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3582 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3583 be caught using IGNORE-ERRORS.
3584 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3585 correctly when transforming recursive LABELS functions to LETs.
3586 (thanks to Alexey Dejneka)
3587 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3588 that are names of constants or global variables.
3589 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3590 alien routines with docstrings.
3591 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3592 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3594 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3595 (thanks to Eric Marsden)
3596 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3597 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3598 * Bug fix: The SPARC backend can now compile functions involving
3599 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3600 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3601 to a functions expecting a PATHNAME-DESIGNATOR.
3602 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3603 lambda lists. (thanks to Alexey Dejneka)
3604 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3605 functions so that EXPORTing the name of the class doesn't cause
3606 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3607 to Antonio Martinez for reporting this)
3608 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3609 constant-folded without failing an assertion. (thanks to Einar
3610 Floystad Dorum for reporting this)
3611 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3612 types are now dealt with more correctly by the compiler.
3613 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3614 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3615 behaviour analogous to RENAME-FILE. This puts its behaviour more
3616 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3618 * The fasl file version number has changed again. (because of the
3619 bug fix involving the names of PCL MAKE-INSTANCE functions)
3621 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3622 * bug fix: Floating point exceptions are treated much more
3623 consistently on the x86/Linux and PPC/Linux platforms.
3624 * Array initialization with :INITIAL-ELEMENT is now much faster for
3625 cases when the compiler cannot open code the array creation, but
3626 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3627 array accesses have also seen a speed increase.
3628 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3629 specified. (This was at the root of some bad interactions between
3630 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3632 * bug fix: Internal error arguments for undefined functions are now
3633 computed correctly on the PPC/Linux platform.
3634 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3635 Raymond Toy's patch for CMU CL)
3636 * Support for the Solaris 9 operating environment has been included
3637 (thanks to Daniel Merritt)
3638 * A very ugly but hopefully complete draft of the missing FFI chapter
3639 of the manual has been created by reformatting the corresponding
3640 CMU CL manual chapter into (currently very ugly and incoherent)
3641 DocBook and bringing it up to date for SBCL behavior. Thus, the
3642 manual is now essentially complete, at least by my extreme
3643 once-and-only-once standards, whereby it's acceptable to refer to
3644 the doc strings of SB-EXT functions as the primary documentation.
3645 * The fasl file version number has changed again, due to cleanup of
3646 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3647 is no longer a static symbol.)
3649 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3650 * SBCL now builds with OpenMCL (version 0.12) as the
3651 cross-compilation host; also, more progress has been made toward
3652 bootstrapping under CLISP.
3653 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3655 * bug 158 fixed: The compiler can now deal with integer loop
3656 increments different from 1; fixing this turned out also to fix
3658 * bug 169 fixed: no more bogus warnings about using lexical bindings
3659 despite the presence of perfectly good SPECIAL declarations (thanks
3660 to David Lichteblau)
3661 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3662 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3663 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3665 * bug 180 fixed: Method combination specifications no longer ignore
3666 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3667 * bug fix: Structure type predicate functions now check their argument
3668 count as they should.
3669 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3670 correctly. (thanks to Pierre Mai)
3671 * minor incompatible change: The --noprogrammer option is deprecated
3672 in favor of the new --disable-debugger option, which is very similar.
3673 (The major difference is that it takes effect at a slightly different
3674 time at startup, causing handling of errors in --sysinit and
3675 --userinit files will be affected differently.) The
3676 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3677 been added to allow this functionality to be controlled from ordinary
3678 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3679 maintainers, who might want to run non-interactive scripts to
3680 build SBCL cores which will later be used interactively.)
3681 * minor incompatible change: The LOAD function no longer, when given
3682 a wild pathname to load, loads all files matching that pathname.
3683 Instead, an error of type FILE-ERROR is signalled.
3685 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3686 * bug 147 fixed: The compiler preserves its block link/count
3687 invariants more correctly now so that it doesn't crash. (thanks
3689 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3691 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3692 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3693 no-value-for-this-character as NIL (as specified by ANSI).
3694 * HOST-NAMESTRING on physical pathnames now returns a string that is
3695 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3696 (thanks to Christophe Rhodes)
3697 * The Alpha port handles icache flushing more correctly. (thanks to
3699 * More progress has been made toward bootstrapping under CLISP. (thanks
3700 to Christophe Rhodes)
3701 * The fasl file format has changed again, because dynamic loading
3702 on OpenBSD (which has non-ELF object files) motivated some cleanups
3703 in the way that foreign symbols are transformed and passed around.
3704 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3705 is no longer treated as whitespace by the reader, but instead as
3706 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
3707 |A
\x7fB|, instead of A as it used to.
3709 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3710 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3711 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3712 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3713 this as of 0.7.1.45, but was left out of the previous news section
3714 (thanks to Dan Barlow)
3715 * SBCL now runs on the Solaris operating system on SPARC architectures
3716 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3717 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3718 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3719 * SPARC backend cleanups, allowing builds of cores optimized for V8
3720 and V9 SPARCS, and also emission of code targeted to a particular
3721 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3723 * SBCL is closer to bootstrapping under CLISP, thanks to various
3724 fixes by Christophe Rhodes.
3725 * The fasl file format has changed again, to allow the compiler's
3726 INFO database to support symbol macros.
3727 * The user manual (in doc/) is formatted into HTML more nicely.
3728 (thanks to coreythomas)
3729 * The system is smarter about SUBTYPEP relationships, especially
3730 those involving NOT types (including types such as ATOM which are
3731 represented internally using NOT types). Thus SUBTYPEP is less
3732 likely to return (VALUES NIL NIL) in general, and in particular
3733 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3735 * The fasl file format has changed again, because the internal
3736 representation of types now includes a new slot to support the new
3737 SUBTYPEP-of-NOT-types logic.
3738 * (not a change in the main branch of SBCL, but a related prototype
3739 which can hopefully be merged into the main branch of SBCL in the
3740 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3741 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3742 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3743 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3744 dispatch macro character combinations. (thanks to Alexey Dejneka)
3745 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3746 that superficially look like logical namestrings correctly.
3747 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3749 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3750 default supplied-p) for &optional and &key arguments. (thanks to
3753 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3754 * incompatible change: The compiler is now less aggressive about
3755 tail call optimization, doing it only when (> SPACE DEBUG) or
3756 (> SPEED DEBUG). (This is an incompatible change because there are
3757 programs which relied on the old CMU-CL-style behavior to optimize
3758 away their unbounded recursion which will now die of stack overflow.)
3759 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3760 for non-GENCGC systems has been increased to 20M (since that
3761 seems much closer to the likely performance optimum for modern
3762 systems than the old 4M value was)
3763 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3764 and *DEBUG-PRINT-LEVEL*
3765 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3766 of CMU CL's support for SPARC, and various endianness and other
3767 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3768 * new syntactic sugar for the Unix command line: --load foo.bar is now
3769 an alternate notation for --eval '(load "foo.bar")'.
3771 ** The system now detects stack overflow and handles it gracefully,
3772 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3773 optimization settings. (This is a good thing in general, and
3774 its introduction in this version should be particularly timely
3775 for anyone whose code fails because of suppression of tail
3777 ** The system now hunts for the C variable "environ" in a more
3778 devious way, to avoid segfaults when the C library version differs
3779 between compile time and run time. (thanks to Christophe Rhodes)
3780 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3781 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3782 ** The compiler no longer issues bogus style warnings for undefined
3783 classes in the same source file as the DEFCLASSes which defined
3784 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3786 ** fixes in CONDITION class precedence list for undefined function
3787 errors (thanks to Alexei Dejneka)
3788 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3789 correctly. (thanks to Dan Barlow)
3790 ** portability fixes aiming at bootstrapping under CLISP (thanks
3791 to Dave McDonald and Christophe Rhodes)
3792 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3793 ** fixes in type translation and and type inference (thanks to
3795 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3796 ** various fixes in the new ports (thanks to Dan Barlow)
3797 * several changes related to debugging:
3798 ** suppression of tail recursion, as noted above
3799 ** stack overflow detection, as noted above
3800 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3801 is now the default. (For some time encapsulation has been more
3802 reliable than the breakpoint-based :ENCAPSULATE NIL
3803 implementation, at least on X86 systems; and I just noticed that
3804 encapsulation also seems closer to the spirit of the ANSI
3807 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3809 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3810 up properly again. (There was a packaging bug in 0.7.0 which
3811 left their definitions in SB-SYS::LOAD-FOREIGN and
3812 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3813 vital for most things which interface to C-level interfaces,
3814 like extensions working with sockets or databases or
3815 Perl-compatible regexes or whatever, and the need to fix
3816 this bug is the main reason that 0.7.1 was released so
3818 ** DEFGENERIC is now choosier about the methods it redefines, so that
3819 reLOADing a previously-LOADed file containing DEFGENERICs does
3820 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3821 cycle now works as it should. (thanks to Alexey Dejneka)
3822 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3823 fixed by Christophe Rhodes. (He actually submitted this patch
3824 months ago, and I delayed until after 0.7.0.)
3825 ** Bug 111 (internal compiler confusion about runtime checks on
3826 FUNCTION types) was fixed by Alexey Dejneka.
3827 * Some internal cleanups (getting rid of variables which aren't
3828 needed now that the byte interpreter is gone) caused the fasl
3829 file format number to change again.
3831 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3832 * major incompatible change: The default fasl file extension, i.e. the
3833 default extension for files produced by COMPILE-FILE, has changed
3834 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3836 ** There are many changes in the implementation of the compiler.
3837 SBCL is now essentially a compiler-only implementation of ANSI
3838 Common Lisp. EVAL still "interprets" a few special cases, but
3839 almost all the interesting cases are handled by creating
3840 a LAMBDA expression, calling COMPILE on it, then calling
3841 FUNCALL on the result.
3842 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3843 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3844 Since the code is newer, there might still be some new bugs
3845 (though not as many as before Martin Atzmueller's fixes:-). But
3846 the new code is substantially simpler and clearer, and hopefully
3847 any remaining bugs will be simpler, less fundamental, and more
3848 fixable then the bugs in the old code.
3849 ** The revised compiler is still a little unsteady on its feet.
3851 *** The debugging information it produces (particularly the names
3852 of FUNCTION objects) is sometimes much less useful than what
3853 the old compiler produced.
3854 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3855 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3856 within a MACROLET) has been temporarily weakened.
3857 ** There are new compiler optimizations for various functions:
3858 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3859 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3860 *** the math functions TRUNCATE, FLOOR, and CEILING
3861 *** the function-of-all-trades COERCE
3862 Mostly these should be transparent, but there's one
3863 potentially-annoying problem (bug 117): when the compiler
3864 inline-expands a function and does type analysis on the result,
3865 it can create control paths which have type mismatches, and
3866 when it can't prove that those control paths aren't taken,
3867 it will issue WARNINGs about the type mismatches. This is
3868 a particular problem in practice for the new sequence functions.
3869 It's not clear how this should be fixed, and for now, a
3870 workaround is given in the entry for 117 in the BUGS file.
3871 ** (Because of the interaction between the two previous items --
3872 occasional inlining problems and new inline expansions -- some
3873 of the new sequence function optimizations won't really kick in
3874 completely until debugging information, and then inlining, are
3875 straightened out in some future version.)
3876 * minor incompatible changes:
3877 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3878 DIRECTORY no longer implicitly promotes NIL slots of its
3879 pathname argument to :WILD. In particular, when you ask for the
3880 contents of a directory (which you used to be able to do without
3881 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3882 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3883 ** changes in behavior that ANSI explicitly defines to be
3884 implementation dependent:
3885 *** The new compiler-only implementation still conforms with ANSI,
3886 but acts a little different than before. Besides the obvious
3887 changes in performance tradeoffs (that the cost per form passed
3888 to EVAL has gone up, and the cost per form executed by EVAL
3889 has gone down), the behavior of the system changes a little
3890 because there are no longer any interpreted function objects.
3891 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3892 e.g. doing COMPILE on the output of interactive DEFUN is
3894 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3896 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3897 has changed from (:CL) to NIL.
3898 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3899 e.g. #\Newline and #\Tab, don't have names specified in the
3900 ANSI Common Lisp standard, is now based on their ASCII symbolic
3901 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3902 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3903 are no longer used for output.
3904 ** changes in internal implementation constants:
3905 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3906 4 million. (If your application spends a lot of time GCing and
3907 you have a lot of RAM, you might want to experiment with
3908 increasing it even more.)
3909 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3910 However, almost all old code should still continue to work without
3911 immediate update, as SB-C-CALL is now a (deprecated) nickname
3913 ** Old operator names in the style DEF-FOO are now deprecated in
3914 favor of new corresponding names DEFINE-FOO, for consistency with
3915 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3916 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3917 internal symbols, but a few supported extensions like
3918 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3919 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3920 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3921 etc. as you get deeper into recursive calls to the debugger
3922 command loop, instead of the old "5]", "5]]", "5]]]"
3923 sequence. (I was motivated to do this when squabbles between
3924 ILISP and SBCL left me very deeply nested in the debugger. In the
3925 short term, this change will probably provoke more ILISP/SBCL
3926 squabbles, but hopefully it will be an improvement in the long run.)
3927 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3928 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3929 function, since declaiming return types involving aliens is
3930 (1) annoyingly messy to do by hand and (2) vital to efficient
3931 compilation of code which calls such functions.
3932 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3933 longer reexported by the SB-EXT package. They're solely useful
3934 for alien code, so it seems more logical that you should get
3935 them from the SB-ALIEN package, not in SB-EXT.
3936 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3937 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3938 features. Instead, the code that they used to control is always
3939 built into the system.
3940 * many other bug fixes
3941 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3942 advantage of the new EVAL-WHEN stuff and to clean them up in
3943 general, and they are now more ANSI-compliant in a number of
3944 ways. Martin Atzmueller is responsible for a lot of this.
3945 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3947 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3948 *** correct ERROR type for various file operations
3949 *** some fixes for Lisp streams
3950 *** DEFMETHOD syntax checking
3951 *** changing old weird representation of debug information as
3952 strings (which, among their other deficiencies, don't transform
3953 correctly when you rename packages, and don't change their
3954 print representation when you change things like *PACKAGE*
3955 and *PRINT-LENGTH*) to symbols and lists of symbols
3956 He also made several improvements and fixed several bugs in DESCRIBE.
3957 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3959 *** misbehavior of WRITE-STRING/WRITE-LINE
3960 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3961 and several other LOOP problems as well
3962 *** DIRECTORY when similar filenames are present
3963 *** DEFGENERIC with :METHOD options
3964 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3965 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3966 *** argument ordering in FIND with :TEST option
3967 *** mishandled package designator argument in APROPOS-LIST
3968 *** various problems in the backquote readmacro
3969 *** a bug in APROPOS
3970 *** probably some others that I'm not describing very well here,
3971 since the CVS log documents them by reference to sbcl-devel
3972 messages, and the SourceForge archives aren't working well.:-(
3973 ** Dan Barlow improved the Alpha port (and is making progress on the
3974 PPC port, for those of you who think different).
3975 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3976 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3977 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3978 continues to work on the SPARC port (for those of you in a position
3979 to look down upon our little PC-compatible boxes from a great height).
3980 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3981 and uses that copy, rather than the current dynamic value, when
3982 it's trying to decide whether to truncate output. Thus e.g.
3983 (let ((*print-lines* 50))
3984 (pprint-logical-block (stream nil)
3986 (let ((*print-lines* 8))
3987 (print (aref possiblybigthings i) stream)))))
3988 should now truncate the logical block only at 50 lines, instead of
3989 often truncating it at 8 lines, as it did before.
3990 * The doc/cmucl/ directory, containing old CMU CL documentation
3991 from the time of the fork, is no longer part of the base system.
3992 SourceForge has shut down its anonymous FTP service, and with it
3993 my original plan for distributing the old CMU CL documentation
3994 there. For now, if you need these files you can download an old
3995 SBCL source release and extract them from it.
3996 * The fasl file version number changed again, for dozens of reasons,
3997 some of which are apparent above.
3999 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4000 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4001 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4002 patch, so that DISASSEMBLE output is much nicer.
4003 * The code in the SB-PROFILE package now seems reasonably stable.
4004 I still haven't decided what the final interface should look like
4005 (I'd like PROFILE to interact cleanly with TRACE, since both
4006 facilities use function encapsulation) but if you have a need
4007 for profiling now, you can probably use it successfully with
4008 the current CMU-CL-style interface.
4009 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4010 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4011 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4012 link now returns the dangling link itself, and for similar
4013 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4014 link itself. (In these cases the old code signalled an error and
4015 looped endlessly, respectively.) Thus, DIRECTORY now works even
4016 in the presence of dangling and cyclic symbolic links.
4017 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4018 is now a supported extension again, since the consensus on
4019 sbcl-devel was that it can be useful for ordinary development
4020 work, not just for debugging SBCL itself.
4021 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4022 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4023 that currently-defined functions might be redefined later with
4024 different return types.
4025 * Hash tables can be printed readably, as inspired by CMU CL code
4026 of Eric Marsden and SBCL code of Martin Atzmueller.
4027 * better error handling in CLOS method combination, thanks to
4028 Martin Atzmueller porting Pierre Mai's CMU CL patches
4029 * more overflow fixes for >16Mbyte I/O buffers
4030 * A bug in READ has been fixed, so that now a single Ctrl-D
4031 character suffices to cause end-of-file on character streams.
4032 In particular, now you only need one Ctrl-D at the command
4033 line (not two) to exit SBCL.
4034 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4036 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4037 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4038 does the right thing.
4039 * The implementation of some type tests, especially for CONDITION
4040 types, is now tidier and maybe faster, due to CMU CL code
4041 originally by Douglas Crosher, ported by Martin Atzmueller.
4042 * Some math functions have been fixed, and there are new
4043 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4044 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4045 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4046 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4047 likely to be built into sbcl-0.7.0.)
4048 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4049 CL, ported to SBCL by Martin Atzmueller)
4050 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4051 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4052 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4053 * There's a new slam.sh hack to shorten the edit/compile/debug
4054 cycle for low-level changes to SBCL itself, and a new
4055 :SB-AFTER-XC-CORE target feature to control the generation of
4056 the after-xc.core file needed by slam.sh.
4057 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4058 COMPILE-FILE is no longer supported, so that now every function
4059 gets an entry point, so that block compilation looks a little
4060 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4061 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4062 returns the number of bytes consed since the system started,
4063 rather than the number consed since the first time the function
4064 was called. (The new definition parallels ANSI functions like
4065 CL:GET-INTERNAL-RUN-TIME.)
4066 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4067 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4068 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4069 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4070 * Fasl file version numbers are now independent of the target CPU,
4071 since historically most system changes which required version
4072 number changes have affected all CPUs equally. Similarly,
4073 the byte fasl file version is now equal to the ordinary
4076 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4077 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4078 is no longer recognized. I apologize for this, because it was
4079 listed in SB-EXT as a supported extension, but I found that
4080 its existing behavior was poorly specified, as well as incorrectly
4081 specified, and it looked like too much of a mess to straighten it
4082 out. I have enough on my hands trying to get ANSI stuff to work..
4083 * many patches ported from CMU CL by Martin Atzmueller, with
4084 half a dozen bug fixes in pretty-printing and the debugger, and
4085 half a dozen others elsewhere
4086 * fixed bug 13: Floating point infinities are now supported again.
4087 They might still be a little bit flaky, but thanks to bug reports
4088 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4089 as flaky as they were.
4090 * The --noprogrammer command line option is now supported. (Its
4091 behavior is slightly different in detail from what the old man
4092 page claimed it would do, but it's still appropriate under the
4093 same circumstances that the man page talks about.)
4094 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4095 are now supported, and enabled by default. Thus, the compiler can
4096 handle many floating point and complex operations much less
4097 inefficiently. (Thus e.g. you can implement a complex FFT
4099 * The compiler now detects type mismatches between DECLAIM FTYPE
4100 and DEFUN better, and implements CHECK-TYPE more correctly, and
4101 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4102 thanks to patches from Martin Atzmueller.
4103 * various fixes to make the cross-compiler more portable to
4104 ANSI-conforming-but-different cross-compilation hosts (notably
4105 Lispworks for Windows, following bug reports from Arthur Lemmens)
4106 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4107 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4108 fixed thanks to Pierre Mai's CMU CL patches.
4109 * fixes to keep the system from overflowing internal counters when
4110 it tries to use i/o buffers larger than 16M bytes
4111 * fixed bug 45a: Various internal functions required to support
4112 complex special functions have been merged from CMU CL sources.
4113 (When I was first setting up SBCL, I misunderstood a compile-time
4114 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4115 * improved support for type intersection and union, fixing bug 12
4116 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4117 more obscure bugs as well
4118 * some steps toward byte-compiling non-performance-critical
4119 parts of the system, courtesy of patches from Martin Atzmueller
4120 * Christophe Rhodes has made some debian packages of sbcl at
4121 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4122 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4123 stable, but are nonetheless usable. When he's ready, I'd be happy
4124 to add them to the SourceForge "File Releases" section. (And if
4125 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4126 * new fasl file format version number (because of changes in
4127 internal representation of (OR ..) types to accommodate the new
4128 support for (AND ..) types, among other things)
4130 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4131 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4133 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4135 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4136 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4137 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4138 * DESCRIBE now works on structure objects again.
4139 * Most function call argument type mismatches are now handled as
4140 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4141 know whether the function will be redefined before the call is
4142 executed. (The compiler could flag local calls with full WARNINGs,
4143 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4144 it doesn't keep track of enough information to know whether calls
4145 are local in this sense.)
4146 * Compiler output is now more verbose, with messages truncated
4147 later than before. (There should be some supported way for users
4148 to override the default verbosity, but I haven't decided how to
4149 provide it yet, so this behavior is still controlled by the internal
4150 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4151 src/compiler/ir1util.lisp.)
4152 * Fasl file format version numbers have increased again, because
4153 support for the Gray streams extension changes the layout of the
4154 system's STREAM objects.
4155 * The Gray subclassable streams extension now works, thanks to a
4156 patch from Martin Atzmueller.
4157 * The full LOAD-FOREIGN extension (not just the primitive
4158 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4159 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4160 but like most other programs, it defaults to copying the Unix
4161 environment from the original process instead of starting the
4162 new process in an empty environment.
4163 * Extensions which manipulate the Unix environment now support
4164 an :ENVIRONMENT keyword option which doesn't smash case or
4165 do other bad things. The CMU-CL-style :ENV option is retained
4166 for porting convenience.
4167 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4168 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4170 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4172 * A patch from Martin Atzmueller seems to have solved the SIGINT
4173 problem, and as far as we know, signal-handling now works cleanly.
4174 (If you find any new bugs, please report them!)
4175 * The system no longer defaults Lisp source file names to types
4176 ".l", ".cl", or ".lsp", but only to ".lisp".
4177 * The compiler no longer uses special default file extensions for
4178 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4179 seems to expect a single default extension for all compiled code,
4180 and there's no compelling reason to try to stretch the standard
4181 to allow two different extensions.) Instead, byte-compiled files
4182 default to the same extension as native-compiled files.
4183 * Fasl file format version numbers have increased again, because
4184 a rearrangement of internal implementation packages made some
4185 dumped symbols in old fasl files unreadable in new cores.
4186 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4187 many fewer weird special cases.
4188 * Bug #17 (differing COMPILE-FILE behavior between logical and
4189 physical pathnames) has been fixed, and some related misbehavior too,
4190 thanks to a patch from Martin Atzmueller.
4191 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4192 by Tim Moore, ported to SBCL by Martin Atzmueller.
4193 * Martin Atzmueller fixed several filesystem-related problems,
4194 including bug #36, in part by porting CMU CL patches, which were
4195 written in part by Paul Werkowski.
4196 * More compiler warnings in src/runtime/ are gone, thanks to
4197 more patches from Martin Atzmueller.
4198 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4201 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4203 * DESCRIBE now works on CONDITION objects.
4204 * The debugger now handles errors which arise when trying to print
4205 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4207 * The build system now uses an additional file, customize-target-features.lisp,
4208 to allow local modifications to the target *FEATURES* list. (The point of
4209 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4210 debugging features enabled, without having to worry about propagating it
4211 into everyone's system when I do a "cvs update".) When no
4212 customize-target-features.lisp file exists, the target *FEATURES* list
4213 should be constructed the same way as before.
4214 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4215 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4216 warn about behavior which is undefined under the ANSI spec. Note: This
4217 is specified by ANSI, but it's not very popular with programmers.
4218 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4219 macro in the SBCL sources for an example of a workaround which you
4220 might use to make portable ANSI-standard code which does what you want.
4221 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4222 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4223 when it's used as a non-toplevel form. (This is required in order
4224 to implement the DEFCONSTANT-EQX macro.)
4225 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4226 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4227 funny things, due to bugs in the implementation of EVAL-WHEN
4228 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4229 non-toplevel DEFCONSTANTs are uncommon.)
4230 * The core file version number and fasl file version number have been
4231 incremented, because the old noncompliant DEFCONSTANT behavior involved
4232 calling functions which no longer exist, and because I also took the
4233 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4234 * fixed bug 1 (error handling before read-eval-print loop starts), and
4235 redid debugger restarts and related debugger commands somewhat while
4237 ** The QUIT debugger command is gone, since it did something
4238 rather different than the SB-EXT:QUIT command, and since it never
4239 worked properly outside the main toplevel read/eval/print loop.
4240 Invoking the new TOPLEVEL restart provides the same functionality.
4241 ** The GO debugger command is also gone, since you can just invoke
4242 the CONTINUE restart directly instead.
4243 ** The TOP debugger command is also gone, since it's redundant with the
4244 FRAME 0 command, and since it interfered with abbreviations for the
4246 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4248 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4249 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4250 some porting work by Martin Atzmueller)
4251 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4252 with a boatload of patches which he ported to SBCL. Now that those
4254 ** The system tries to make sure that its low-priority messages
4255 are prefixed by semicolons, to help people who like to use
4256 syntax highlighting in their ILISP buffer. (This patch
4257 was originally due to Raymond Toy.)
4258 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4259 patches originally written by Raymond Toy.
4260 ** The compiler understands coercion between single-value and
4261 multiple-VALUES type expressions better, getting rid of some very
4262 weird behavior, thanks to patches originally by Robert MacLachlan
4263 and Douglas Crosher.
4264 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4265 lambda lists, thanks to a patch originally by Pierre Mai.
4266 ** The system no longer bogusly warns about "abbreviated type
4268 ** The compiler gets less confused by inlining and RETURN-FROM,
4269 thanks to some patches originally by Tim Moore.
4270 ** The system no longer hangs when dumping circular lists to fasl
4271 files, thanks to a patch originally from Douglas Crosher.
4272 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4273 undefined function error.
4274 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4275 in structure slot initforms) for now, documented workaround instead:-|
4276 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4277 * fixed bug 5: added stubs for various Gray stream functions called
4278 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4279 installed, at least appropriate type errors are generated
4280 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4281 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4282 consistently in DEFMETHOD forms.
4283 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4284 it doesn't seem to affect SBCL after all
4285 * The C runtime system now builds with better optimization and many
4286 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4288 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4290 * The system is now under CVS at SourceForge (instead of the
4291 CVS repository on my home machine).
4292 * The new signal handling code has been tweaked to treat register
4293 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4294 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4295 downstream, e.g. in debug-int.lisp, has implicit dependencies
4296 on the unsignedness of integer representation of machine words,
4297 and that caused the system to bomb out with infinite regress
4298 when trying to recover from type errors involving signed values,
4299 e.g. (BUTLAST '(1 2 3) -1).)
4300 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4301 (This was one of the bugs Peter Van Eynde reported back in July.)
4302 * The system now uses code inspired by Colin Walters' O(N)
4303 implementation of MAP (from the cmucl-imp@cons.org mailing
4304 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4305 inline the MAP operation, and there is more than one
4306 sequence argument to the MAP call (so that it can't just
4307 do ETYPECASE once and for all based on the type of the
4308 single sequence argument). (The old non-inline implementation
4309 of the general M-argument sequence-of-length-N case required
4310 O(M*N*N) time when any of the sequence arguments were LISTs.)
4311 * The QUIT :UNIX-CODE keyword argument has been renamed to
4312 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4313 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4315 * Raymond Wiker's patches to port dynamic loading from Linux to
4316 FreeBSD have been added.
4317 * The BUGS file is now more nearly up to date, thanks in large part
4318 to Martin Atzmueller's review of it.
4319 * The debugger now flushes standard output streams before it begins
4320 its output ("debugger invoked" and so forth).
4321 * The core version number and fasl file version number have both
4322 been incremented, because of incompatible changes in the layout
4324 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4325 used to not be called for a saved Lisp image.)
4326 * Martin Atzmueller's version of a patch to fix a compiler crash,
4327 as posted on sbcl-devel 13 September 2000, has been installed.
4328 * Instead of installing Martin Atzmueller's patch for the
4329 compiler transform for SUBSEQ, I deleted the compiler transform,
4330 and transforms for some similar consing operations.
4331 * A bug in signal handling which kept TRACE from working on OpenBSD
4333 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4334 away by constant folding
4335 * The system now defines its address space constants in one place
4336 (in the Lisp sources), and propagates them automatically elsewhere
4337 (through GENESIS and the sbcl.h file). Therefore, patching the
4338 address map is less unnecessarily tedious and error-prone. The
4339 Lisp names of address space constants have also been systematized.
4340 * CVS tags like dollar-Header-dollar have been removed from
4341 the sources, because they have never saved me trouble and
4342 they've been source of trouble working with patches and other
4343 diff-related operations.
4344 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4345 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4347 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4349 * The system has been ported to OpenBSD.
4350 * The system now compiles with a simple "sh make.sh" on the systems
4351 that it's supported on. I.e., now you no longer need to tweak
4352 text in the target-features.lisp-expr and symlinks in src/runtime/
4353 by hand, the make.sh takes care of it for you.
4354 * The system is no longer so grossly inefficient when compiling code
4355 involving vectors implemented as general (not simple) vectors (VECTOR T),
4356 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4357 which dares to use the various sequence functions on non-simple
4358 vectors, takes less of a performance hit.
4359 * There is now a primitive type predicate VECTOR-T-P
4360 to test for the (VECTOR T) type, so that e.g.
4361 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4362 can now be compiled with some semblance of efficiency. (The old code
4363 turned the type declaration into a full call to %TYPEP at runtime!)
4364 * AREF on (VECTOR T) is still not fast, since it's still compiled
4365 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4366 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4367 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4368 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4369 without making full calls to SUBTYPEP at runtime.
4370 (Some analogous efficiency issues for non-simple vectors specialized to
4371 element types other than T, or for non-simple multidimensional arrays,
4372 have not been addressed. They could almost certainly be handled the
4373 same way if anyone is motivated to do so.)
4374 * The changes in array handling break binary compatibility, so
4375 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4376 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4377 instead of (VALUES T T).
4378 * By following the instructions that Dan Barlow posted to sbcl-devel
4379 on 2 July 2000, I was able to enable primitive dynamic object
4380 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4381 functionality is not implemented (since it calls ld to resolve
4382 library references automatically, requiring RUN-PROGRAM for its
4383 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4384 try to resolve library references) is now supported.
4385 * The system now flushes the standard output streams when it terminates,
4386 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4387 them at several other probably-convenient times, e.g. in each pass of
4388 the toplevel read-eval-print loop, and after evaluating a form given
4389 as an "--eval" command-line option. (These changes were motivated by a
4390 discussion of stream flushing issues on cmucl-imp in August 2000.)
4391 * The source transform for TYPEP of array types no longer assumes
4392 that an array whose element type is a not-yet-defined type
4393 is implemented as an array of T, but instead punts, so that the
4394 type will be interpreted at runtime.
4395 * There is now some support for cross-compiling in make.sh: each of
4396 the phases of make.sh has its own script. (This should be transparent
4397 to people doing ordinary, non-cross-compile builds.)
4398 * Since my laptop doesn't have hundreds of megabytes of memory like
4399 my desktop machine, I became more motivated to do some items on
4400 my to-do list in order to reduce the size of the system a little:
4401 ** Arrange for various needed-only-at-cold-init things to be
4402 uninterned after cold init. To support this, those things have
4403 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4404 symbols with such names are now uninterned after cold init).
4405 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4406 fasl files for cold load.
4407 ** Remove the old compiler structure pooling code (which used to
4408 be conditional on the target feature :SB-ALLOC) completely.
4409 ** Redo the representation of some data in cold init to be more compact.
4410 (I also looked into supporting byte compiled code at bootstrap time,
4411 which would probably reduce the size of the system a lot, but that
4412 looked too complicated, so I punted for now.)
4413 * The maximum signal nesting depth in the src/runtime/ support code has
4414 been reduced from 4096 to 256. (I don't know any reason for the very
4415 large old value. If the new smaller value turns out to break something,
4416 I'll probably just bump it back up.)
4417 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4419 * Many, many bugs reported by Peter Van Eynde have been added to
4420 the BUGS list; some have even been fixed.
4421 * While enabling dynamic object file loading, I tried to make the
4422 code easier to understand, renaming various functions and variables
4423 with less ambiguous names, and changing some function calling
4424 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4425 * While trying to figure out how to do the OpenBSD port, I tried to
4426 clean up some of the code in src/runtime/. In particular, I dropped
4427 support for non-POSIX signal handling, added various comments,
4428 tweaked the code to reduce the number of compilation warnings, and
4429 renamed some files to increase consistency.
4430 * To support the new automatic configuration functionality in make.sh,
4431 the source file target-features.lisp-expr has been replaced with the
4432 source file base-target-features.lisp-expr and the machine-generated
4433 file local-target-features.lisp-expr.
4434 * fixed a stupid quoting error in make.sh so that using CMU CL
4435 "lisp -batch" as cross-compilation host works again
4437 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4439 * DESCRIBE no longer tries to call itself recursively to describe
4440 bound/fbound values, so that it no longer fails on symbols which are
4441 bound to themselves (like keywords, T, and NIL).
4442 * DESCRIBE now works on generic functions.
4443 * The printer now prints less-screwed-up representations of closures
4444 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4445 * A private symbol is used instead of the :EMPTY keyword previously
4446 used to mark empty slots in hash tables. Thus
4447 (DEFVAR *HT* (MAKE-HASH-TABLE))
4448 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4449 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4450 now does what ANSI says that it should. (You can still get
4451 similar noncompliant behavior if bang on the hash table
4452 implementation with all the symbols you get back from
4453 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4454 This breaks binary compatibility, since tests for equality to
4455 :EMPTY are wired into things like the macroexpansion of
4456 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4458 * There's now a minimal placeholder implementation for CL:STEP,
4459 as required by ANSI.
4460 * An obscure bug in the interaction of the normal compiler, the byte
4461 compiler, inlining, and structure predicates has been patched
4462 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4463 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4465 * Missing ordinary arguments in a macro call are now detected even
4466 when the macro lambda list contains &KEY or &REST.
4467 * The debugger no longer complains about encountering the top of the
4468 stack when you type "FRAME 0" to explicitly instruct it to go to
4469 the top of the stack. And it now prints the frame you request even
4470 if it's the current frame (instead of saying "You are here.").
4471 * As specified by ANSI, the system now always prints keywords
4472 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4474 * The default initial SIZE of HASH-TABLEs is now smaller.
4475 * Type information from CLOS class dispatch is now propagated
4476 into DEFMETHOD bodies, so that e.g.
4477 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4479 is now basically equivalent to
4480 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4481 (DECLARE (TYPE SINGLE-FLOAT X))
4483 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4484 operation, without having to do run-time type dispatch.
4485 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4486 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4487 * Since I don't seem to be making big file reorganizations very often
4488 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4489 is overflowing my ability to conveniently back them up), I've finally
4490 checked the system into CVS. (The CVS repository is on my home system,
4491 not at SourceForge -- putting it on SourceForge might come later.)
4492 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4493 high-level GC-NOTIFY-FOO functions send their output. (There's
4494 still very little control of where low-level verbose GC functions
4495 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4496 less than it used to -- the GC-NOTIFY-FOO functions are now under
4497 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4498 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4499 in only one place in the source code, and propagates it automatically
4500 everywhere that it's needed. Thus e.g. when I bump the version from
4501 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4502 * The C source files now include boilerplate legalese and documentation
4503 at the head of each file (just as the Lisp source files already did).
4504 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4505 to his page will be replaced with a link to his new CLiki service.
4507 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4509 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4510 * The build process now looks for GNU make under the default name "gmake",
4511 instead of "make" as it used to. If GNU make is not available as "gmake"
4512 on your system, you can change this default behavior by setting the
4513 GNUMAKE environment variable.
4514 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4515 can build without error under CMU CL.
4517 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4519 * There is now a partial SBCL user manual (with some new text and some
4520 text cribbed from the CMU CL manual).
4521 * The beginnings of a profiler have been added (starting with the
4522 CMU CL profiler and simplifying and cleaning up). Eventually the
4523 main interface should be through the TRACE macro, but for now,
4524 it's still accessed through vaguely CMU-CL-style functions and macros
4525 exported from the package SB-PROFILE.
4526 * Some problems left over from porting CMU CL to the new
4527 cross-compilation bootstrap process have been cleaned up:
4528 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4529 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4530 part when getting rid of the compiler *BACKEND* stuff.)
4531 ** The value of *NULL-TYPE* was screwed up, because it was
4532 being initialized before the type system knew the final
4533 definition of the 'NULL type. This screwed up several key
4534 optimizations in the compiler, causing inefficiency in all sorts
4535 of places. (I found it because I wanted to understand why
4536 GET-INTERNAL-RUN-TIME was consing.)
4537 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4538 PROCLAIM FTYPE information. Unfortunately this broke binary
4539 compatibility again, since now the forms output by DEFGENERIC
4540 to refer to functions which didn't exist in 0.6.3.
4541 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4542 can use the new (as of 0.6.3) transform for SOME into MAP into
4544 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4545 values to (INTEGER 0 1000000), so that the time code will no longer
4546 occasionally get blown up by Linux returning 1000000 microseconds
4547 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4548 its output conform to the ANSI spec. (Alas, this makes its output
4549 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4550 * A full call to MAP NIL with a single sequence argument no longer conses.
4551 * fixes to problems pointed out by Martin Atzmueller:
4552 * The manual page no longer talks about multiprocessing as though
4553 it were currently supported.
4554 * The ILISP support patches have been removed from the distribution,
4555 because as of version 5.10.1, ILISP now supports SBCL without us
4556 having to maintain patches.
4557 * added a modified version of Raymond Toy's recent CMU CL patch for
4558 EQUALP comparison of HASH-TABLE
4560 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4562 * The system still can't cross-compile itself with
4563 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4564 entails), but at least it can compile more of itself that way
4565 than it used to be able to, and various buglets which were uncovered
4566 by trying to cross-compile itself that way have now been fixed.
4567 * This release breaks binary compatibility again. This time
4568 at least I've incremented the FASL file format version to 2, so that the
4569 problem can be detected reliably instead of just causing weird errors.
4570 * various new style warnings:
4571 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4572 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4573 ** using the lexical binding of a variable named in the *FOO* style
4574 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4575 as specified by ANSI.
4576 * *RANDOM-STATE* is no longer automatically initialized from
4577 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4578 default behavior of the system is to repeat its behavior every time
4579 it's run. If you'd like to change this behavior, you can always
4580 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4581 old convention there was no comparably easy way to get the system to
4582 repeat its behavior every time it was run.
4583 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4584 FTYPE declarations has been removed, in favor of their ANSI
4585 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4586 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4587 the types of their sequence arguments can be determined at compile time.
4588 This is done through a new open code expansion for MAP which eliminates
4589 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4590 argument types can be determined at compile time.
4591 * The optimizer now transforms COERCE into an identity operation when it
4592 can prove that the coerced object is already of the correct type. (This
4593 can be a win for machine generated code, including the output of other
4594 optimization transforms, such as the MAP transform above.)
4595 * Credit information has been moved from source file headers into CREDITS.
4596 * Source file headers have been made more standard.
4597 * The CASE macro now compiles without complaining even when it has
4600 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4602 * (Note that the way that the PCL macroexpansions were rewritten
4603 to accommodate the change in DEFGENERIC below breaks binary
4604 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4605 not run under sbcl-0.6.2. Once we get out of alpha releases,
4606 i.e. hit release 1.0.0, we'll probably try to maintain binary
4607 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4608 and sbcl-1.4.4. Until then, however, it might be fairly common
4609 for maintenance releases to break binary compatibility.)
4610 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4612 * The reporting of unhandled signals has been changed to print some
4613 explanatory text as well as the report form. (Previously only
4614 the report form was printed.)
4615 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4616 it defines, so that the compiler no longer issues undefined function
4617 warnings for compiled-but-not-yet-loaded generic functions.
4618 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4619 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4620 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4621 section of the ANSI spec are supported.
4622 * The "" nickname for the "KEYWORD" package has been removed.
4623 The reader still handles symbol tokens which begin with a package marker
4624 as keywords, but it doesn't expose its mechanism for doing so in the
4625 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4626 * The system now issues STYLE-WARNINGs for contradictory TYPE
4627 proclamations. (Warnings for contradictory FTYPE proclamations would
4628 be nice too, but those can't be done usefully unless the type system
4629 is made smarter about FUNCTION types.)
4630 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4631 systematized, so that "*target-*.lisp is supposed to exist only on the
4632 target and imply that there's a related file which exists on the
4633 host, and *host-*.lisp is supposed to exist only on the host and imply
4634 that there's a related file which exists on the target. This involves a
4635 lot of renaming. Hopefully the acute confusion caused by the renaming
4636 will be justified by the reduction in chronic confusion..
4637 ** runtime-type.lisp -> early-target-type.lisp
4638 ** target-type.lisp -> late-target-type.lisp
4639 ** early-host-format.lisp -> early-format.lisp
4640 ** late-host-format.lisp -> late-format.lisp
4641 ** host-error.lisp -> misc-error.lisp
4642 ** early-error.lisp -> early-target-error.lisp
4643 ** late-error.lisp -> late-target-error.lisp
4644 ** host-defboot.lisp -> early-defboot.lisp
4645 ** code/misc.lisp -> code/target-misc.lisp
4646 ** code/host-misc.lisp -> code/misc.lisp
4647 ** code/numbers.lisp -> code/target-numbers.lisp
4648 ** code/early-numbers.lisp -> numbers.lisp
4649 ** early-host-type.lisp -> early-type.lisp
4650 ** late-host-type.lisp -> late-type.lisp
4651 ** host-typep.lisp -> typep.lisp
4652 ** load.lisp -> target-load.lisp
4653 ** host-load.lisp -> load.lisp
4654 ** host-disassem.lisp -> disassem.lisp
4655 ** host-insts.lisp -> insts.lisp
4656 ** byte-comp.lisp -> target-byte-comp.lisp
4657 ** host-byte-comp.lisp -> byte-comp.lisp
4658 ** host-signal.lisp -> signal.lisp
4659 ** host-defstruct.lisp -> defstruct.lisp
4660 ** late-target-type.lisp -> deftypes-for-target.lisp
4661 Furthermore, several other previously target-only files foo.lisp (e.g.
4662 hash-table.lisp and random.lisp) have been split into a target-and-host
4663 foo.lisp file and a target-only target-foo.lisp file, with their key type
4664 definitions in the target-and-host part, so that the cross-compiler will
4665 know more about target types.
4666 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4667 gone away. In their place are various *BACKEND-FOO* variables
4668 corresponding to the slots of the old structure.
4669 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4670 into the target SBCL has been fixed.
4671 * The chill.lisp system for loading cold code into a running SBCL
4673 * Support for the CMU CL "scavenger hook" extension has been removed.
4674 (It was undocumented and unused in the CMU CL sources that SBCL was
4675 derived from, and stale in sbcl-0.6.1.)
4676 * Various errors in the cross-compiler type system were detected
4677 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4678 (enabling various consistency checks). Many of them were fixed,
4679 but some hard problems remain, so the compiler is back to
4680 running without *TYPE-SYSTEM-INITIALIZED* for now.
4681 * As part of the cross-compiler type system cleanup, I implemented
4682 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4683 * I have started adding UNCROSS calls throughout the type system
4684 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4685 on cross-compiler input files will be able to go away, and various
4687 * CONSTANTP now returns true for quoted forms (as explicitly required
4690 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4692 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4693 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4694 (MAKE-LIST -1). In the longer term, it ought to become true
4695 that declarations are assertions even at SAFETY 1. For now, it's not
4696 quite true even at SAFETY 3, but it's at least more nearly true..
4697 (Note that this change seems to increases the size of the system by
4698 O(5%) and to decrease the speed of the compiler by 20% or more.)
4699 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4700 for the problem of printing dozens of lines of distracting information
4701 about low-level system machinery as part of the top stack frame
4702 on entry to the debugger when an undefined function was called.
4703 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4704 is not reset to COMMON-LISP-USER.
4705 * Compilation of stuff related to dyncount.lisp has been made conditional
4706 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4707 smaller. The various dyncount-related symbols have been moved into
4708 a new "SB-DYNCOUNT" package.
4709 * tty-inspect.lisp has been renamed to inspect.lisp.
4710 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4711 feature has gone away. (When we eventually port to other flavors of
4712 libc and/or Unix, we'll try to make the differences between flavors
4713 invisible at the user level.)
4714 * Various other *FEATURES* tags, and/or their associated conditionals,
4715 have been removed if obsolescent, or given better documentation, or
4716 sometimes given more-mnemonic names.
4718 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4720 * tidied up "make.sh" script
4721 * tidied up system directory structure
4722 * better "clean.sh" behavior
4723 * added doc/FOR-CMUCL-DEVELOPERS
4724 * many many small tweaks to output format, e.g. removing possibly-confusing
4725 trailing #\. character in DESCRIBE-INSTANCE
4726 * (EQUALP #\A 'A) no longer signals an error.
4727 * new hashing code, including EQUALP hashing
4728 * tidied up Lisp initialization and toplevel
4729 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4730 * command line argument processing
4731 * added POSIX-GETENV function to deal with Unix-ish environment variables
4732 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4733 terminating SBCL on EOF
4734 * non-verbose GC by default
4735 * There is no more "sbcl" shell script; the sbcl file is now the C
4736 runtime executable (just like CMU CL).
4737 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4739 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4740 symbol and package information as Lisp native symbol and package objects
4741 instead of strings naming symbols and strings naming packages. This way,
4742 whenever packages are renamed (as in warm init), debug information is
4743 transformed along with everything else.
4744 * tweaked the optimization policy declarations which control the building
4745 of SBCL itself. Now, among other things, the system no longer saves
4746 source location debugging information. (This helps two problems at once
4747 by reducing SBCL size and by keeping SBCL from trying to look for its
4748 sources -- which may not exist -- when reporting errors.)
4749 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4750 debugging and testing purposes
4751 * cleaned up printing, making the printer call PRINT-OBJECT for
4752 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4753 methods, giving nearly-ANSI behavior
4754 * converted almost all special variables to use *FOO* naming convention
4755 * deleted PARSE-TIME functionality, since it can be done portably
4756 * moved some files out of cold init into warm init
4757 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4759 * regularized formatting of source files
4760 * added an install.sh script
4761 * fixed ridiculous memory usage of cross-compiler by making
4762 compiler/alloc.lisp not try to do pooling unless it can hook
4763 itself into the GC of the cross-compilation host. Now the system
4764 builds nicely on my old laptop.
4765 * added :SB-ALLOC in target-features.lisp-expr
4766 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4767 was not implemented)
4768 * re-did condition handling and note reporting in the compiler. Notes
4769 are no longer handled by signalling conditions. Style warnings
4770 and warnings are handled more correctly and reported in such a way
4771 that it's easy to find one or the other in your output (so that you
4772 can e.g. figure out which of many problems caused COMPILE-FILE to
4774 * changed the severity of several compiler warnings from full WARNING
4775 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4776 compiler note reporting so that it doesn't use the condition system
4777 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4778 COMPILE-FILE command)
4779 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4780 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4781 no longer supported, since their implementation was deeply intertwingled
4782 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4783 * removed bogus "support" for compiler macros named (SETF FOO), and
4784 removed the compiler macro for SETF INFO (but only after making a fool
4785 of myself on the cmucl-imp mailing list by posting a bogus patch for
4786 DEFINE-COMPILER-MACRO..)
4787 * Compiled files containing forms which have side effects on the Lisp
4788 reader (such as DEFPACKAGE forms) are now handled more correctly.
4789 (Compiler queuing of top level lambdas has been suppressed by setting
4790 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4791 * deleted various currently-unused source files, e.g. gengc.lisp. They
4792 may be added back at some point e.g. when porting to other architectures,
4793 but until they are it's distracting to distribute them and to try to
4795 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4796 there were so many of them they're just distractions, and UNCROSS is
4797 known to be able to handle the current sources
4798 * moved PROFILE functionality into TRACE, so that it will be clear
4799 how the wrapping and unwrapping of functions when you profile them
4800 interacts with the wrapping and unwrapping of functions when you
4801 trace them. (Actually, the functionality isn't there yet, but at least
4802 the interface specification is there. Hopefully, the functionality will
4803 arrive with some future maintenance release.)
4804 * removed host-oops.lisp
4805 * changed signature of QUIT function to allow UNIX-CODE argument
4806 * fixed READ-SEQUENCE bug
4807 * tweaked verbose GC output so that it looks more like the progress
4808 output that ANSI specifies for functions like LOAD
4809 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4810 * added <http://sbcl.sourceforge.com> to the banner information printed by