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 * optimization: runtime lookup of function definitions can be
8 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
9 * bug fix: fixed #427: unused local aliens no longer cause compiler
10 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
12 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
13 alien-stack leakage. (reported by Andy Hefner)
14 * bug fix: PROGV signals an error when an attempt to violate declared
15 type of a variable or bind a constant is made.
16 * bug fix: SET signals an error when an attempt to violate declared
17 type of a variable is made.
18 * bug fix: restart computation during the execution of a restart
19 test function no longer causes infinite recursion. (reported by
21 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
22 signals an error. (thanks to Pierre Mai)
24 changes in sbcl-1.0.19 relative to 1.0.18:
25 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
26 warnings that go otherwise unhandled will be muffled if they are
27 of the type that's the value of this variable.
28 * optimization: stack allocation is slightly more efficient on x86
30 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
31 where a raw slot always is initialized using the initform whose
32 type is not know sufficiently well a compile-time are now compiled
33 correctly. (reported by John Morrison)
34 * bug fix: compiler no longer makes erronous assumptions in the
35 presense of non-foldable SATISFIES types.
36 * bug fix: stack analysis missed cleanups of dynamic-extent
37 arguments in non-let-converted calls to local functions.
38 * improvements to the Windows port:
39 ** adjusted address spaces for building on both Win32 and
40 Win64. (thanks for John Connors)
41 * fixed some bugs revealed by Paul Dietz' test suite:
42 ** interval arithmetic during type derivation used inexact integer
43 to single-float coercions.
44 ** arithmetic operations involving large integers and single
45 floats give the same results in compiled and interpreted code.
46 ** deriving the result type of COERCE no longer signals an error
47 if the derived type of the second argument is a MEMBER type
48 containing invalid type specifiers.
49 ** ADJOIN with constant NIL as second argument works correctly.
50 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
52 changes in sbcl-1.0.18 relative to 1.0.17:
53 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
54 profiles only the current thread.
55 * minor incompatible change: changes to SYMBOL-VALUE of constants
56 defined with DEFCONSTANT now signal an error.
57 * enhancement: SB-SPROF now has support for wallclock profiling,
58 and is also able to profile specific threads. REPORT output
59 has also additional sorting options.
60 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
62 * optimization: structure allocation has been improved
63 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
64 ** out of line constructors are ~10% faster.
65 ** inline constructors are ~15% faster.
66 ** inline constructors are capable of dynamic extent allocation
67 (generally on x86 and x86-64, in some cases on other platforms
69 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
71 * optimization: file compiler is now able to coalesce non-circular
72 lists, non-base strings, and bit-vectors. Additionally, constants
73 are never referenced through SYMBOL-VALUE at runtime.
74 * optimization: code defining methods on PRINT-OBJECT (and other
75 generic functions in the COMMON-LISP package) now loads faster.
76 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
78 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
79 fasl is now deleted. (reported by Attila Lendvai)
80 * bug fix: READ-LINE always returned NIL for the last line in files.
81 (reported by Yoshinori Tahara)
82 * bug fix: more accurate disassembly annotations of foreign function
83 calls. (thanks to Andy Hefner)
84 * bug fix: trimming non-simple strings and non-string string
85 designators when the there is nothing to trim works properly.
86 (thanks to James Knight)
87 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
88 (thanks to Travis Cross)
89 * fixed some bugs revealed by Paul Dietz' test suite:
90 ** NIL is a valid function name (regression at 1.0.13.38)
91 ** FILL on lists was missing its return value (regression at 1.0.12.27)
92 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
93 fill pointers properly (regression at 1.0.12.23)
94 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
95 displacement indices properly (regression at 1.0.12.23)
97 changes in sbcl-1.0.17 relative to 1.0.16:
98 * temporary regression: user code can no longer allocate closure
99 variable storage on stack, due to bug 419 without explicitly
100 requesting it. Please consult sbcl-devel for advice if you need to
101 use this feature in the meanwhile.
102 * new feature: runtime argument --control-stack-size can be used to
103 adjust thread default control stack size.
104 * enhancement: improved TIME output
105 ** all times are reported using the measured accuracy (milliseconds
106 for real and GC times, microseconds for everything else.)
107 ** processor cycle counts on x86 and x86-64.
108 ** interpreted forms are counted for both evaluator modes.
109 ** number of lambdas converted by the compiler is reported.
110 ** CPU percentage report (computed from real and total run time.)
111 ** more comprehensive run time reporting, using a condenced format
112 ** interperted form, lambda, and page fault counts are omitted
114 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
116 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
117 * optimization: two argument forms of LAST are upto ~10% faster
118 in normal SPEED policies.
119 * optimization: NCONC no longer needs to heap cons its &REST list
120 in normal SPEED policies.
121 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
123 * bug fix: UNION and NUNION work with :TEST-NOT once more,
124 regression since 1.0.9.1. (thanks to Eric Marsden)
125 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
126 since 1.0.15.36. (thanks to Paul Khuong)
127 * bug fix: LAST when always returned the whole list when given a bignum
128 as the second argument.
129 * bug fix: dynamic extent allocation of nested lists and vectors
130 could leak to otherwise accessible parts.
131 * bug fix: invalid optimization of heap-allocated alien variable
133 * bug fix: fasl header checking is less vulnerable to different
134 platform word lengths.
135 * bug fix: more correct assembler syntax for GNU binutils
136 2.18.50.0.4 support. (thanks to Marijn Schouten)
137 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
139 * bug fix: the fopcompiler can handle LOCALLY forms (with no
140 declarations) successfully. (reported by Attila Lendvai)
142 changes in sbcl-1.0.16 relative to 1.0.15:
143 * minor incompatible change: revert the changes to sb-posix's error
144 signaling added in 1.0.14.
145 * minor incompatible change: change PROBE-FILE back to returning
146 NIL whenever we can't get a truename, as was the case before 1.0.14.
147 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
148 inherits from ERROR instead of just CONDITION.
149 * new feature: SB-INTROSPECT can provide source locations for instances
150 as well. (thanks to Tobian Ritterweiler)
151 * optimization: binding special variables now generates smaller code
152 on threaded platforms.
153 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
154 and cases where no :TEST is given but the compiler can infer that
155 the element to search is of type (OR FIXNUM (NOT NUMBER)).
156 * optimization: better LOGNOT on fixnums.
157 * optimization: modular arithmetic for a particular requested width
158 is implemented using a tagged representation unless a better
159 representation is available.
160 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
161 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
162 for wellformedness and returns a specialized vector. (reported by
163 Francois-Rene Rideau)
164 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
165 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
166 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
167 unscheduling timer at the same time as another timer fires.
168 * bug fix: don't reschedule timers for dead threads.
169 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
170 * bug fix: copying output from RUN-PROGRAM to a stream signalled
171 bogus errors if select() was interrupted.
172 * enhancement: add support for fcntl's struct flock to SB-POSIX.
174 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
175 * enhancement: cleaner backtraces for interactive interrupts, as
176 well as other cases where the interesting frames used to be
177 obscured by interrupt handling frames.
178 * enhancement: untracing a whole package using (UNTRACE "FOO") is
179 now supported, and tracing a whole package using (TRACE "FOO") now
180 traces SETF-functions as well.
181 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
182 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
183 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
184 * unreadably printed representation of hash-tables now includes
186 * bug fix: partially fixed #188: type propagation from assignments
187 is now more efficient.
188 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
189 'DOUBLE-FLOAT) are not flushable.
190 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
191 full address of the object, and none of the tag bits.
192 * bug fix: readably printing hash-tables now respects other printer
193 control variables. (reported by Cedric St-Jean)
194 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
195 keyword with MAKE-HASH-TABLE.
196 * bug fix: export SB-POSIX:MKSTEMP.
197 * bug fix: SORT was not interrupt safe.
198 * bug fix: XREF accounts for the last node of each basic-block as
200 * bug fix: MAKE-INSTANCE optimizations interacted badly with
201 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
202 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
203 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
204 create obsolete instances in the case of redefinition or
205 obsoletion of a superclass. (thanks to Andy Hefner)
206 * bug fix: Support for the Alpha architecture has been revived; it had
207 suffered somewhat from lack of maintenance since sbcl-1.0.
208 * improvements to the Windows port:
209 ** The system detects the codepage to use at startup, instead of
210 using the value from the saved core. (thanks to Kei Suzuki)
212 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
213 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
214 (see documentation for details.)
215 * revived support for OpenBSD (contributed by Josh Elsasser)
216 * partially fixed bug #108: ROOM no longer suffers from occasional
217 (AVER (SAP= CURRENT END)) failures.
218 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
219 bodies no longer cause a WARNING to be signalled. (reported by
221 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
222 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
223 the bug in TRUNCATE.) (reported by Michael Weber)
224 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
225 no samples. (reported by Andy Hefner)
226 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
227 no longer appear as (NIL ...) frames in backtraces.
228 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
229 is now actually exported from SB-EXT as documented. (reported by
231 * bug fix: sb-aclrepl now correctly understands how to inspect
232 single-floats on 64-bit platforms where single-floats are not boxed.
233 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
234 yet been finalized. (reported by Levente Meszaros)
235 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
236 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
237 SBCL-specific optimize qualities.
239 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
240 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
241 an executable in the search path, and does so in the child
242 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
243 been removed; it can be found in the CVS history, for somebody who
244 needs that search behavior (see the manual).
245 * minor incompatible change: compiler policy re. weakening type
246 checks has changed: now type checks are weakened only if SAFETY < 2
248 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
249 unparsing of directory pathnames as files. Analogously,
250 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
251 filename to parse into a directory pathname.
252 * enhancement: implicit generic function creation now signals a
253 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
254 users can bind handlers for and muffle around calls to LOAD.
255 * enhancement: RUN-PROGRAM allows unicode arguments and environments
256 to be used (using the default stream external format), and allows
257 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
258 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
259 strings and vectors whose element-type or simplicity is not fully
260 known at compile-time.
261 * optimization: STRING-TRIM and related functions no longer allocate
262 a new string when no trimming needs to be performed. These functions
263 are also faster than before when the input string has been declared
265 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
266 * optimization: READ-LINE is significantly faster for files containing
268 * optimization: non-open coded uses of character comparison operators
269 (e.g. char=) no longer cons when called with more than one parameter
270 on platforms supporting dynamic-extent allocation.
271 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
272 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
273 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
275 * bug fix: some sequence functions elided bounds checking when
277 * bug fix: too liberal weakening of union-type checks when SPEED >
279 * bug fix: more bogus fixnum declarations in ROOM implementation
282 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
283 * new feature: MAKE-HASH-TABLE now experimentally accepts a
284 :SYNCHRONIZED argument, which makes the hash-table safe for
285 concurrent accesses (but not iteration.) See also:
286 SB-EXT:WITH-LOCKED-HASH-TABLE, and
287 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
288 * optimization: CONCATENATE on strings is an order of magnitude faster
289 in code compiled with (> SPEED SPACE).
290 * optimization: SUBSEQ is ~50% faster on lists.
291 * bug fix: bug 417 fixed -- source location reporting is now more robust.
292 * bug fix: SUBSEQ on a list will now correctly signal an error if if
293 END is smaller then START.
294 * bug fix: SB-PROFILE will no longer report extra consing for nested
295 calls to profiled functions.
296 * bug fix: ROOM implementation had bogus fixnum declarations which
297 could cause type-errors when calling ROOM on large images.
298 * bug fix: if file compilation is aborted, the partial fasl is now
299 deleted, and COMPILE-FILE returns NIL as the primary value.
300 * bug fix: number of thread safety issues relating to SBCL's internal
301 hash-table usage have been fixed.
302 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
303 be returned from its body when the values were being returned
304 using unknown-values return convection and the W-P-O was wrapped
305 inside an UNWIND-PROTECT.
306 * bug fix: sb-posix should now compile again under Windows, enabling
309 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
310 * incompatible change: hash-table accessor functions are no longer
311 automatically protected by locks. Concurrent accesses on the same hash-table
312 from multiple threads can give inconsistent results or even corrupt the
313 hash-table completely. Multi-threaded applications should do their own
314 locking at the correct granularity. In the current implementation it is
315 still safe to have multiple readers access the same table, but it's not
316 guaranteed that this property will be maintained in future releases.
317 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
318 and will signal an error at runtime.
319 * enhancement: SB-THREAD package now exports a semaphore interface.
320 * enhancement: CONS can now stack-allocate on x86 and
321 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
323 * enhancement: nested lists can now be stack allocated on
324 platforms providing stack allocation support.
325 * enhancement: dynamic-extent support has been extended to support
326 cases where there are multiple possible sources for the stack
328 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
329 if the mutex is uncontested on Linux.
330 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
331 as specified by the CLHS. (thanks to Tobias Rittweiler)
332 * bug fix: NaN comparison now works on x86-64.
333 * bug fix: CLOSE :ABORT T on a stream with pending output now
335 * bug fix: instances of non-standard metaclasses using standard
336 instance structure protocol sometimes missed the slot type checks
338 * bug fix: known functions can be inlined in high-debug code.
340 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
341 * minor incompatible change: the MSI installer on Windows no longer
342 associates .lisp and .fasl files with the installed SBCL.
343 * minor incompatible change: :UNIX is no longer present in *FEATURES*
344 on Windows. (thanks to Luis Oliviera)
345 * new feature: SB-CLTL2 contrib module now implements
346 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
347 * optimization: scavenging weak pointers is now more efficient,
348 requiring O(1) instead of O(N) per weak pointer to identify
349 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
350 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
351 method bodies using constant slot-names when the first argument is
352 a specializer parameter for the method.
353 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
354 names, when the class of the instance is a direct instance
355 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
356 as slow as the constant slot-name case.)
357 * optimization: member type construction is now O(N) instead
359 * optimization: UNION and NUNION are now O(N+M) for large
360 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
362 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
363 now more readable in environments like Slime which display it.
364 (thanks to Tobias C. Rittweiler)
365 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
366 was able to infer the correct argument type for the object on which
367 the CAS operation was being performed.
368 * bug fix: copy propagation interfered with parallel assignment
369 semantics in local calls. (reported by Paul Khuong)
370 * bug fix: the signed modular fixnum shift compiled to wrong code on
371 x86 and x86-64. (spotted by a slight modification to some of
374 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
375 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
376 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
377 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
379 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
380 and generic function now print the object identity for anonymous
381 instances. (thanks to Attila Lendvai)
382 * enhancement: as an extension to MOP, SBCL now supports SETF of
383 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
384 (thanks to Attila Lendvai)
385 * enhancement: sb-cover has an alternate annotation mode which puts
386 the form annotations at the car of the form, instead of annotating
387 it completely. The benefit of this mode is that it shows better
388 which forms were instrumented by the compiler.
389 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
390 by printer control variables. (reported by Dan Corkill)
391 * bug fix: system leaked memory when delayed output was performed by
392 the OS in smaller chunks then expected. (thanks to David Smith)
393 * bug fix: system leaked memory when file streams were not closed
395 * bug fix: large objects written to slow streams that were modified
396 after the write could end up with the modified state written to
397 the underlying file descriptor.
398 * bug fix: multiple threads operating in parallel on the same stream
399 could cause buffer-overflows.
400 * bug fix: source location information is stored correctly
401 (broken since 1.0.6). This bug would generally show up as the
402 Slime debugger highlighting the wrong form when the sldb-show-source
404 * bug fix: Branch forms are again annotated as branches in the sb-cover
406 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
407 on x86-64. (reported by Gregory Vanuxem)
408 * bug fix: EQUALP could return wrong results for structures with raw
409 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
410 word). (reported by Vjacheslav Fyodorov)
411 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
414 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
415 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
416 atomic compare-and-swap operations on threaded platforms.
417 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
418 allows assigning a global minimum value to optimization qualities
419 (overriding proclamations and declarations).
420 * enhancement: closed over variables can be stack-allocated on x86
422 * performance bug fix: GETHASH and (SETF GETHASH) are once again
424 * optimization: slot definition lookup is now O(1). This speeds up
425 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
426 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
427 * optimization: ASSOC and MEMBER can now be open-coded for all
428 combinations of keyword arguments when second argument is constant
429 and SPEED >= SPACE. In other cases a specialized version is
431 * bug fix: using obsoleted structure instances with TYPEP and
432 generic functions now signals a sensible error.
433 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
434 (reported by Kristoffer Kvello)
435 * bug fix: backtrace construction is now more careful when making
436 lisp-objects from pointers on the stack, to avoid creating bogus
437 objects that can be seen by the GC.
438 * bug fix: defaulting of values in contexts expecting more than 7
439 variables now works on x86-64. (reported by Christopher Laux)
440 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
442 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
443 as the property-list of a symbol.
444 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
445 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
446 situations requested, are once again file-compileable. (reported
449 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
450 * MOP improvement: support for user-defined subclasses of
451 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
452 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
453 the expansion of DEFMETHOD, is responsible for generating a form
454 which creates a list of specializers when evaluated. Additional
455 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
456 debugging and introspective support.
457 * minor incompatible change: the (unsupported) spinlock interface
458 has changed: free spinlock now has the value NIL, and a held spinlock
459 has the owning thread as its value.
460 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
461 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
463 * enhancement: name of a socket-stream is now "a socket" instead of
465 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
466 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
467 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
468 for generic functions. (Thanks to Tobias C. Rittweiler)
469 * optimization: bignum printing speed has been improved by 20-40%
470 (depending on the bignum size.)
471 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
473 * bug fix: the cache used by the CLOS to store precomputed effective
474 methods, slot offsets, and constant return values is now thread and
476 * bug fix: generic function dispatch function updating is now thread
477 and interrupt safe (in the sense that the known issues have been
479 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
480 * bug fix: interning EQL-specializers is now thread and interrupt safe.
481 * bug fix: asdf systems with dependencies to the SB-POSIX or
482 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
483 * bug fix: interrupt safety of applicable method computation has been
486 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
487 * new contrib: sb-cover, an experimental code coverage tool, is included
489 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
490 significantly faster.
491 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
492 produce more efficient code on x86-64 if the compiler can determine
493 that (+ INDEX <constant>) does not require a bounds check and FOO
494 has an element type at least 8 bits wide.
495 * enhancement: a new, experimental synchronous timeout facility is
496 provided. Refer to SB-SYS:WITH-DEADLINE for details.
497 * enhancement: when a symbol name conflict error arises, the
498 conflicting symbols are always printed with a package prefix.
499 (thanks to Kevin Reid)
500 * enhancement: stepping is now once again supported on the SPARC and
501 MIPS platforms. (It is also now more likely to work on CheneyGC
503 * enhancement: sb-sprof can now also track and report accurate call
505 * bug fixes: the treatment of non-standard subclasses of
506 SB-MOP:SPECIALIZER is more correct.
507 * incompatible change: PURIFY no longer copies the data from the
508 dynamic space into the static and read-only spaces on platforms
509 that use the generational garbage collector
510 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
512 * bug fix: GC race condition occasionally resulting in crashes with
513 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
515 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
517 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
518 a STYLE-WARNING to be signalled (regression from 1.0.4.)
519 * bug fix: an asynchronous interrupt could previously leave the
520 system running with GC inhibited.
521 * bug fix: a DECLARE form evaluated at top-level now causes an error
522 rather than silently (or verbosely) returning NIL.
523 * bug fix: trying to dissassemble functions compiled at high DEBUG could
524 result in a error being signalled due to source form lookup errors.
525 (reported by Peter Graves)
527 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
528 * incompatible change: removed writer methods for host-ent-name,
529 host-ent-addresses -- changing the values did not update the DNS
531 * minor incompatible change: changed experimental JOIN-THREAD interface
532 * documentation: the manual now lists reader and writer methods
533 in class slot documentation sections. (thanks to Richard M Kreuter)
534 * documentation: unwinding from asyncronous events has been
535 documented as unsafe.
536 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
537 in multithreaded application code.
538 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
539 platforms. (thanks to James Anderson for the optimization hint)
540 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
542 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
543 variants no longer cons.
544 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
545 their NOT- variants no longer cons.
546 * optimization: EQUAL hash tables no longer use SXHASH for objects
547 of all data types, but instead use an EQL hash for types for which
548 EQUAL is the same as EQL.
549 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
550 are significantly faster.
551 * optimization: new STRING-OUTPUT-STREAM implementation is much
552 faster for large outputs and conses 30% less on average.
553 * enhancement: XREF information is now collected for references made
554 to global variables using SYMBOL-VALUE and a constant argument.
555 * enhancement: SIGINT now causes a specific condition
556 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
557 * bug fix: FILE-POSITION used to signal an error in some cases where
558 ANSI requires it to return NIL.
559 * bug fix: ADJUST-ARRAY is now interrupt-safe.
560 * bug fix: adding and removing fd-handlers is now interrupt-safe.
561 * bug fix: inlined calls to C now ensure 16byte stack alignment on
563 * bug fix: bad type declaration in the CLOS implementation has
564 been fixed. (reported by James Anderson)
565 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
566 (thanks to Lutz Euler)
567 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
568 required by the CLHS. (reported by Samium Gromoff)
569 * bug fix: dead unbound variable references now signal an error.
570 (reported by Marco Monteiro)
571 * bug fix: / with an unused value was being deleted in safe code.
572 (thanks to Marco Monteiro and Kevin Reid)
573 * bug fix: number of characters that can be written onto a single
574 line in a file is unlimited.
575 * bug fix: some GC deadlocks caused by asynchronous interrupts have
576 been fixed by inhibiting interrupts for when GC is disabled.
577 * bug fix: some interrupt safety issues with GETHASH, (SETF
578 GETHASH), CLRHASH and REMHASH have been fixed.
579 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
580 specifier no longer causes infinite recursion.
581 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
582 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
583 * bug fix: an &environment argument with the correct variable information
584 is passed to macros that are expanded during byte compilation.
585 (reported by Samium Gromoff)
586 * bug fix: a logic error was causing the hash function for bignums to
587 have excessive amounts of collisions. (reported by Faré Rideau)
588 * bug fix: modifying the contents of an array could change the return
589 value of SXHASH on that array, which is only allowed for strings
590 and bit vectors. (bug introduced in 0.9.16)
591 * improvement: the x86-64/darwin port now passes all tests (except
592 for the debugger tests) but should still be considered
593 experimental until this is fixed.
594 * improvement: a style-warning is signaled for CASE (etc) clauses with
595 duplicate keys. (thanks to Kevin Reid)
596 * improvement: macos/x86 and macos/x86-64 now use mach exception
597 handlers for dealing with illegal instructions (for trapping and
598 error handling) and memory protection violations (for GC).
600 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
601 * new platform: experimental support for x86-64/darwin (MacOS).
602 * incompatible change: the thread-safe (on most platforms) getaddrinfo
603 and getnameinfo sockets functions are used instead of gethostbyaddr
604 and gethostbyname, on platforms where the newer functions are available.
605 As a result, the ALIASES field of HOST-ENT will always be NIL on these
607 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
608 don't print the startup banner, but behave as if --noinform was passed
609 as a command line argument. (thanks to Kevin Reid)
610 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
611 * optimization: code using alien values with undeclared types is much faster.
612 * optimization: the compiler is now able to open code SEARCH in more cases.
613 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
614 * bug fix: using standardized COMMON-LISP special variables as loop
615 variables no longer signals bogus package lock violations. (reported
617 * bug fix: declaring local loop variables to be of a range-limited type
618 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
619 (reported by Andras Simon)
620 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
621 bugs remain on x86-64.)
622 * bug fix: the #= and ## reader macros now interact reasonably with
623 funcallable instances.
624 * bug fix: type-checks for function arguments were compiled using the
625 compiler policy settings of the wrong lexical environment (in 1.0.2
627 * bug fix: SHADOW accepts characters as string designators, as required
628 by the spec (thanks to Eric Marsden)
629 * bug fix: fixed GC safety issues when foreign functions are called with
630 non-base strings as arguments
631 * bug fix: more consistent error output for fatal-compiler-warnings, like
633 * bug fix: functions with proper names were showing up as NIL in
634 backtraces (reported by Edi Weitz, regression in 1.0.2)
636 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
637 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
638 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
639 produce more efficient code on the x86 if the compiler can determine
640 that (+ INDEX <constant>) does not require a bounds check and FOO
641 has an element type at least 8 bits wide.
642 * bug fix: references to undefined variables are handled the same way
643 in toplevel forms as in the normal compiler
644 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
646 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
647 (thanks to Jon Buller)
648 * improvement: faster compilation times for complex functions
649 * improvement: added readlink support to SB-POSIX (thanks to Richard
652 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
653 * improvement: experimental support for mach exception handling on
654 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
656 * improvement: support for GBK external format.
657 (thanks to Chun Tian (binghe))
658 * improvement: the debugger now displays variables that have been closed
659 over, in code compiled with (DEBUG 2) or higher
660 * improvement: support for executable cores on NetBSD (thanks to
662 * new feature: added a RESTART-FRAME debugger command
663 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
664 be used to provide an implementation for FILE-POSITION on Gray streams
665 (thanks to Eric Marsden)
666 * new feature: add syslog, openlog and closelog support to SB-POSIX
667 (thanks to Richard Kreuter)
668 * optimization: the function call overhead in code compiled with
669 a high DEBUG optimization setting is significantly
670 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
671 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
672 (thanks to Tony Martinez)
673 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
674 evaluated once (reported by Kevin Reid)
675 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
676 works again (thanks to Kilian Sprotte)
677 * bug fix: an error is signaled for tagbodies with duplicate tags
678 (thanks to Stephen Wilson)
679 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
680 * bug fix: Win32 port can now handle foreign code unwinding Lisp
681 stack frames from alien callbacks.
682 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
683 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
684 65k pages (thanks to David Woodhouse)
685 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
687 changes in sbcl-1.0.1 relative to sbcl-1.0:
688 * new platform: FreeBSD/x86-64, including support for threading.
689 * new feature: the compiler stores cross-referencing information
690 about function calls (who-calls), macroexpansion (who-macroexpands)
691 and special variables (who-binds, who-sets, who-references) for code
692 compiled with (< SPACE 3). This information is available through the
693 sb-introspect contrib.
694 * new feature: users may subclass SEQUENCE, and have instances of
695 these classes interoperate with standard Common Lisp functions if
696 a number of methods are defined. (This feature is experimental
697 and the interface subject to change based on feedback from SBCL
698 users and the general community)
699 * improvement: sb-sprof traces call stacks to an arbitrary depth on
700 x86/x86-64, rather than the previous fixed depth of 8
701 * improvement: another pthread back-end of mutex "pthread-futex".
702 * bug fix: non-ascii command-line arguments are processed correctly
703 (thanks to Yaroslav Kavenchuk)
704 * bug fix: non-required arguments were not passed correctly when a method
705 defined using DEFMETHOD was called from a mop-generated method using
706 CALL-NEXT-METHOD (reported by Pascal Costanza)
707 * bug fix: recursion is now permitted in accessors through
708 SLOT-UNBOUND. (reported by Pascal Costanza)
709 * bug fix: an error was signaled at startup if the HOME environment
710 variable was defined, but had an empty value (reported by Peter Van Eynde)
711 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
712 signal a PROGRAM-ERROR, not a BUG.
713 * bug fix: SB-POSIX:READDIR works when built with large file support.
714 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
716 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
717 for better automatic indentation support. (thanks to Matt Pillsbury)
718 * optimization: loading generic functions no longer takes O(n^2) time,
719 proportional to the amount of methods in the generic function
720 (reported by Todd Sabin and Jeremy Brown)
721 * optimization: the FIND and POSITION family of sequence functions
722 are significantly faster on arrays whose element types have been
724 * improvements to the Windows port:
725 ** Intermittent heap corruption problems have been fixed. (thanks
726 to Alastair Bridgewater)
727 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
729 ** Lisp is able to unwind foreign exception frames from alien
730 callbacks. (thanks to Alastair Bridgewater)
732 changes in sbcl-1.0 relative to sbcl-0.9.18:
733 * improvement: experimental support for threading on FreeBSD/x86.
734 (thanks to NIIMI Satoshi)
735 * improvement: runtime option --dynamic-space-size can be used
736 to set the size of the dynamic space reserved on startup.
737 * improvement: floating point modes in effect are now saved in
738 core, and restored on startup.
739 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
740 startup, not time since first call to GET-INTERNAL-REAL-TIME.
741 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
742 threads are not running after *SAVE-HOOKS* have run.
743 * improvement: writes to CLOS instance slots are type-checked in code
744 compiled with (SAFETY 3)
745 * improvement: floating-point exception handling on FreeBSD (thanks to
747 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
748 (thanks to Zach Beane)
749 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
751 * improvement: added support for the Shift-JIS external format.
752 (contributed by NIIMI Satoshi)
753 * improvement: callbacks are supported on Linux/PPC. (thanks to
755 * bug fix: compiler bug triggered by a (non-standard) VALUES
756 declaration in a LET* was fixed. (reported by Kaersten Poeck)
757 * bug fix: file compiler no longer confuses validated and already
758 dumped structurres. (reported by Kaersten Poeck)
759 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
760 fill-pointer signals a type-error as required. (thanks to
762 * bug fix: disassemly of funcallable instances works.
763 * bug fix: single stepping on PPC.
764 * bug fix: fix thread-safety problems in the type system (generally
765 manifesting as nonsensical errors like "STRING is a bad type specifier
766 for sequences" or "The value 1 is not of type FIXNUM")
767 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
768 (reported by Josip Gracin)
769 * bug fix: an error is signaled for attempts to displace arrays with
770 incompatible element types (thanks to Mario Mommer)
771 * bug fix: more correct handling of wide characters in debug info
772 (bug reported by Attila Lendvai and fixed by Juho Snellman)
773 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
774 and don't cause extra consing
775 * optimization: MAP and MAP-INTO are significantly faster on vectors
776 whose elements types have been declared.
777 * Improvements to SB-SPROF:
778 ** Support for allocation profiling
779 ** Reduced profiling overhead, especially for long profiling runs
780 * Improvements to the Windows port:
781 ** floating point exceptions are now reported correctly.
782 ** stack exhaustion detection works partially.
783 ** more accurate GET-INTERNAL-REAL-TIME.
784 ** better RUN-PROGRAM behaviour in case of errors in the child
786 ** PROBE-FILE now simplifies pathnames correctly.
787 ** DIRECTORY now works correctly with :WILD-INFERIORS.
788 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
789 1st 1970 (although time timezone data will be unreliable).
790 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
792 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
793 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
794 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
796 * bug fix: two potential GC deadlocks affecting threaded builds.
797 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
798 returns T (reported by Anton Kazennikov)
799 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
800 with non-variable places
801 * bug fix: remove a race condition in the setting of
802 funcallable-instance functions, this should make threaded CLOS
803 code more stable against memory faults.
804 * bug fix: corruption of specials when unbinding is interrupted by an
805 asynchronous unwind (reported by Hannu Koivisto)
806 * improvement: the debugger will now also display local variables that
807 are only used once, for code compiled with a DEBUG optimization quality
810 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
811 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
812 * incompatible change: External-format support for FFI calls. The
813 SB-ALIEN:C-STRING no longer implies an ASCII
814 external-format. Instead the string is subject to external-format
815 conversion. Additionally return values of type SB-ALIEN:C-STRING
816 are by default of type (SIMPLE-ARRAY CHARACTER), not
817 SIMPLE-BASE-STRING. For an alien type that behaves like the old
818 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
819 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
820 * incompatible change: SB-EXT package no longer contains the
821 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
822 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
824 * incompatible change: the single-stepper is no longer available
825 on Alpha, Mips and Sparc platforms.
826 * minor incompatible change: the direct superclasses of
827 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
828 not (STANDARD-OBJECT FUNCTION). This makes the
829 class-precedence-lists of GENERIC-FUNCTION and
830 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
832 * minor incompatible change: the default stream external format on
833 non-unicode SBCL is no longer detected from the locale, but is always
835 * new feature: Add a version of evaluator that uses an interpreter instead
836 of the compiler. EVAL still uses the compiler by default, to switch it
837 to use the interpreter, set the value of the variable
838 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
839 * minor incompatible change: the single-stepper REPL has been merged
840 with the normal debugger (see the "Stepping" heading of the debugger help
841 for more details). The debugger command STEP will no longer switch
842 to the single-stepper REPL.
843 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
844 for a type now works.
845 * bug fix: loading of default sysinit file works. (thanks to Leonid
847 * bug fix: better detection of circularities in the file-compiler.
848 (reported by Marco Monteiro)
849 * bug fix: the CL pathname functions now work with files that have
850 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
851 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
852 systems with Unix98 pty semantics.
853 * bug fix: ASDF-INSTALL will now work with bsd tar.
854 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
856 * bug fix: timers expiring in dead threads no longer cause a
857 type-error (reported by Paul "Nonny Mouse").
858 * bug fix: thanks to more lightweight single-stepper instrumentation,
859 code compiled with (DEBUG 3) will compile and execute significantly faster,
860 and will have more accurate type-inferencing than before
861 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
862 whose bindings are modified
863 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
864 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
865 ** replace dummy implementations of CL:MACHINE-INSTANCE and
866 CL:SOFTWARE-VERSION with proper version
868 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
869 * feature: implemented the READER-METHOD-CLASS and
870 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
871 as specified by AMOP.
872 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
874 * optimization: faster LOGCOUNT implementation on x86 and x86-64
875 (thanks to Lutz Euler)
876 * optimization: hashing of general arrays and vectors has been
877 improved. (reported by Any Fingerhut)
878 * enhancement: SB-INTROSPECT is now able to find definitions of
879 profiled functions. (thanks to Troels Henriksen)
880 * enhancement: compiler-macro expansion applies now to FUNCALL forms
881 as well, allowing compiler-macros for SETF-functions to expand.
882 * enhancement: step-instrumentation no longer wraps known
883 single-value functions with multiple-value context, allowing
884 better type inference.
885 * fixed bug #337: use of MAKE-METHOD in method combination now works
886 even in the presence of user-defined method classes. (reported by
887 Bruno Haible and Pascal Costanza)
888 * fixed bug #339(c): if there are applicable methods not part of any
889 long-form method-combination group, call INVALID-METHOD-ERROR.
890 (reported by Bruno Haible)
891 * fixed bug #361: the :FUNCTION initarg in the protocol for
892 initialization of methods can now be used to override
893 internally-produced optimized functions. (reported by Bruno
895 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
896 system-provided lambda expression no longer cause warnings about
897 unbound #:|pv-table| symbols.
898 * bug fix: improved the handling of type declarations and the
899 detection of violations for keyword arguments with non-constant
901 * bug fix: potentially erronous calls to PATHNAME and
902 MERGE-PATHNAMES were being flushed in some cases.
903 (reported by Richard Kreuter)
904 * bug fix: compiled calls to TYPEP were mishandling obsolete
905 instances. (reported by James Bielman and Attila Lendvai)
906 * bug fix: format strings with ~> without matching ~< no longer
907 trigger an AVER, but signal an understandable error instead.
908 (reported by Antonio Martinez)
909 * bug fix: specifying an output-file without a pathname-type for
910 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
911 of input-file instead of "fasl". (reported by Robert Dodier)
912 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
913 (reported by James Y Knight).
914 * bug fix: compiler-macros-function did not consider the environment
915 argument for shadowing by local functions.
916 * bug fix: compiler-macros expansion was inhibited by local INLINE
918 * bug fix: inline expansions of known functions were subject to
919 step-instrumentation in high debug policies, leading to problems
921 * bug fix: compiler failed to differentiate between different CONS
923 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
924 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
925 * bug fix: #368: incorrect use of expressed vs. upgraded array
927 * bug fix: #306a: more precise unions of array types.
928 * thread-safety improvements:
929 ** CONDITION-WAIT could return early on Linux, if the thread was
930 interrupted and subsequently continued with SIGCONT.
931 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
933 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
934 * added support for the ucs-2 external format. (contributed by Ivan
936 * minor incompatible change: pretty printing of objects of type
937 (cons symbol) is, in the default pprint-dispatch-table, now
938 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
940 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
941 called later in a class's lifetime, possibly as late as when the
942 first instance of the class is created. Previously,
943 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
944 class became finalizeable.
945 * fixed bug: FILE-POSITION sometimes returned inconsistent results
946 for multibyte external-format streams. (thanks to "vbzoli")
947 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
948 with :ALLOCATION :CLASS inherited from superclasses of the
950 * fixed bug: anonymous classes can now be created using the :NAME
951 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
952 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
953 * fixed bug: core-files saved with :EXECUTABLE T can again be
954 executed when SBCL_HOME isn't set. (reported by James Knight)
955 * fixed bug: toplevel LOCALLY forms with declarations could
956 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
957 * fixed bug: printing from several different threads using different
958 values of *print-case* could cause invalid output, due to
959 some internal special variables of the printer not being bound
960 thread-locally (reported by Max Mikhanosha)
961 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
962 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
963 (reported by Pascal Costanza)
964 * fixed bug: FINALIZE-INHERITANCE is called from
965 REINITIALIZE-INSTANCE on classes when the class has previously
966 been finalized, as required by AMOP.
967 * minor code generation optimizations:
968 ** better register allocation in CLOS dispatching functions
969 ** overflow detection when coercing signed bytes to fixnums on x86-64
970 ** is now implemented with one IMUL instruction instead of three shifts
971 ** more efficient bit-vector access on x86 and x86-64
972 ** more efficient access to raw structure slots on x86 and x86-64
973 * fixed some bugs revealed by Paul Dietz' test suite:
974 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
977 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
978 * feature: thread support on Solaris/x86, and experimental thread support
980 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
982 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
983 default method for SLOT-UNBOUND.
984 * minor incompatible change: prevent the user from specializing the
985 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
986 somewhat counter to the intent of the protocol, I (CSR) think, and
987 additionally it just doesn't work in SBCL as currently
988 implemented, thanks to optimizations (that are always valid for
989 the other three SLOT-VALUEish functions, but not for the setter).
990 * minor incompatible change: the :SB-LDB feature is now enabled by
991 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
992 the low-level debugger.
993 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
994 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
995 down to an SB-SYS:FD-STREAM, allowing direct communication in
996 more cases. Temporary files and pipes are still used as a fallback
998 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
999 on the non-reentrant C functions localtime(3) and gmtime(3).
1000 * bug fix: global optimization policy was not visible in LOCALLY and
1002 * bug fix: class objects can be used as specializers in methods.
1003 (reported by Pascal Costanza)
1004 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1005 with a type error. (reported by blitz_ on #lisp)
1006 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1007 failed with a type error. (reported by Pascal Bourguignon)
1008 * bug fix: merging pathnames against defaults with :DIRECTORY
1009 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1010 (reported by James Y Knight)
1011 * bug fix: saving large (>2GB) cores on x86-64 now works
1012 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1013 constant index and a (simple-array (signed-byte 32)) array
1014 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1015 error (patch by Robert J. Macomber)
1016 * feature: TIME now displays the amount of run-time spent in GC
1017 * bug fix: The debugger now does a better job of respecting
1018 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1019 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1020 workaround for bug 403.)
1021 * bug fix: floating point exception handling now works on FreeBSD
1022 (thanks to NIIMI Satoshi)
1023 * fixed some bugs revealed by Paul Dietz' test suite:
1024 ** MISC.641: LET-conversion were not supposed to work in late
1026 * improvements to the Win32/x86 port:
1027 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1028 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1030 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1031 * new feature: source path information is generated for macro-expansion
1032 errors for use in IDE's like Slime (thanks to Helmut Eller)
1033 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1034 * bug fix: compiler does not loop forever on an invalid type in
1036 * improvement: compilation of most CLOS applications is significantly
1038 * optimization: added a limited bytecode compiler for simple toplevel
1039 forms, speeding up compilation and FASL loading
1040 * bug fix: the statistical profiler now properly distinguishes anonymous
1043 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1044 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1045 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1046 into subclasses of the finalized class. Now user calls to
1047 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1048 system return before any subclasses are finalized.
1049 * minor incompatible change: The reader no longer ignores errors
1050 regarding non-existent packages in #+ and #- feature tests.
1051 * new feature: command line options --no-sysinit, --no-userinit to
1052 inhibit loading the corresponding init files
1053 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1054 for sending data through UDP sockets (thanks to François-René Rideau)
1055 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1056 error is signalled instead (thanks to François-René Rideau)
1057 * minor incompatible change: Error signalling behaviour of lexical
1058 operations violating package locks has changed slightly. Refer to
1059 documentation on package locks for details.
1060 * enhancement: EVAL can process IF-expressions without resorting to the
1062 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1063 constant-folded properly due to missing out-of-line functions.
1064 (reported by Mika Pihlajamäki)
1065 * bug fix: LISTEN sometimes returned T even in cases where no data was
1066 immediately available from the stream
1067 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1068 were reversed. (reported by Levente Mészáros)
1069 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1070 when given a vector displaced to an adjustable array. (reported
1072 * bug fix: derivation of float boundaries from numbers outside the
1073 appropriate float range (reported by John Wiseman)
1074 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1076 * bug fix: precomputing cache entries for generic functions with
1077 some subclasses of specializers as yet invalid does not attempt to
1078 fill a cache line with a negative offset. (reported by Levente
1080 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1081 allow condition class objects as arguments to DOCUMENTATION and
1082 (SETF DOCUMENTATION); only find and set documentation for
1083 structure names for the STRUCTURE doc-type. (suggested by Gary
1085 * improvements to the Win32/x86 port:
1086 ** (user-homedir-pathname) and default initialization file
1087 locations now know about the user's "Documents and Settings"
1088 directory (thanks to Yaroslav Kavenchuk)
1089 ** run-program is implemented (thanks to Mike Thomas)
1090 ** sockets support (thanks to Timothy Ritchey)
1091 ** better backtrace support (thanks to Alastair Bridgewater)
1092 ** sb-grovel supported
1093 ** asdf-install and sb-posix work somewhat
1094 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1095 * improvements to the Solaris/x86 port:
1096 ** works on Solaris 11/Solaris Express
1097 ** floating-point exception handling support
1098 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1099 * fixed some bugs revealed by Paul Dietz' test suite:
1100 ** REMOVE-METHOD returns its generic function argument even when
1101 the method is not one of the generic functions' methods.
1102 ** objects declared as MEMBER types can be admissible arguments to
1103 structure accessors.
1104 ** printing characters should simply be printed by the FORMAT ~:C
1106 ** compiler failure when compiling functions with hairy constant
1107 defaults for optional parameters.
1108 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1109 function, which is already optimized.
1111 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1112 * new platform: experimental support for SBCL x86/Darwin, including
1113 MacOS X 10.4.5 on Intel.
1114 * new feature: Unicode character names are now known to the system
1115 (through CHAR-NAME and NAME-CHAR).
1116 * new feature: the filesystem location of SBCL's core file is
1117 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1118 * minor incompatible change: the contrib modules SB-POSIX and
1119 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1120 this change is to make it easier to distribute
1121 location-independent binaries.
1122 * bug fix: as implied by AMOP, standardized classes no longer have
1123 slots named by external symbols of public packages. (reported by
1125 * optimization: calling functions via constant symbols -- as in
1126 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1127 via the function object as in (FUNCALL #'FOO).
1128 * optimization: on x86 and x86-64, the calling convention for the
1129 case of dealing with an unknown number of values has been altered
1130 to be friendlier to the prediction heuristics implemented,
1131 particularly with reference to CALL and RET pairing. (thanks to
1132 Alastair Bridgewater)
1133 * optimization: on x86, the code for access to thread-local symbol
1134 values and binding/unbinding of thread-local symbols is smaller.
1135 (thanks to Alastair Bridgewater)
1136 * enhancement: CONSTANTP is now able to determine constantness of
1137 more complex forms, including calls to constant-foldable standardized
1138 functions and some special forms beyond QUOTE.
1139 * fixed bug: occasional GC crashes on Solaris/x86
1140 * optimization: x86-64 supports stack allocation of results of simple
1141 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1142 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1143 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1144 (thanks to James Knight)
1145 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1146 by the standard (thanks to Stephen Compall)
1148 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1149 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1150 be used for bundling the runtime and the core file into one
1151 executable binary. This feature is not currently supported on all SBCL
1152 platforms. (thanks to James Bielman and NIIMI Satoshi)
1153 * new feature: a generational or ephemeral garbage collector is now
1154 the default on the PowerPC platform (both Linux and Darwin). The
1155 old Cheney (stop and copy) collector is a build-time option.
1156 (thanks to Cyrus Harmon, after Raymond Toy)
1157 * minor incompatible change: the method by which SBCL finds its
1158 contributed modules has changed; it no longer relies on symbolic
1159 links from an $SBCL_HOME/systems directory, but searches directly
1160 in the subdirectories of $SBCL_HOME.
1161 * enhancement: the dynamic heap size on the Linux/PPC platform is
1162 markedly larger, even using the older Cheney garbage collector.
1163 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1164 certain complicated string types. (reported by Gary King)
1165 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1166 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1167 * fixed bug: DOCUMENTATION on structures no longer signals an
1168 error if no structure type of the right name exists. (reported by
1170 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1171 applicable non-standard primary or :AROUND method on
1172 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1173 no longer cause unbound variable errors. (reported by Kevin Reid)
1174 * fixed bug: metacircle resolution in cases where methods have slots
1175 added before the slots from STANDARD-METHOD. (reported by Jean
1177 * fixed bug: the Power PC assembly code for calling into lisp
1178 sometimes computed its return address wrongly (depending on the
1179 15th bit of the address, fixed at link time). This used to
1180 manifest itself in a segmentation violation while building PCL.
1181 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1182 many others over the years)
1183 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1184 the stack pointer (treated as a signed integer) is negative.
1185 (thanks to Peter van Eynde)
1187 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1188 * new platform: experimental support for the Windows operating
1189 system has been added. (thanks to Alastair Bridgewater)
1190 * fixed several bugs in and robustified the PPC FFI (including
1191 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1192 * bug fix: allow non-simple string symbol names (reported by Paul
1194 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1196 * bug fix: saving a core corrupted callbacks on x86/x86-64
1197 * bug fix: closed a loophole in metacircularity detection and
1198 grounding in the PCL implementation of CLOS.
1199 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1200 (reported by tomppa on #lisp)
1201 * bug fix: clear the direction flag on Lisp -> C transitions, as
1202 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1203 (reported by Andrej Grozin and Hendrik Maryns)
1204 * optimization: major improvements to GC efficiency on GENCGC platforms
1205 * optimization: faster implementation of EQUAL
1206 * optimization: emit more efficient opcodes for some common
1207 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1208 * optimization: several other minor code-generation improvements on x86-64
1209 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1211 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1212 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1213 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1214 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1215 by ANSI as a generic function, and for consistency (SETF
1216 GENERIC-FUNCTION-NAME) is treated likewise.
1217 * fixed bug #233.b: make constraint propagation notice when a variable
1218 value is changed after it is referenced but before it is used
1219 * fixed bug #296: no more arbitrary behaviour from filenames with
1220 odd characters as --load arguments. (reported by Adam Warner)
1221 * fixed bug #390: :CHARACTER-SET pathname components now work as
1222 expected. (reported by Tim Daly Jr)
1223 * fixed bug #391: complicated :TYPE intersections in slot
1224 definitions no longer cause an error in PCL internals.
1225 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1226 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1227 returning the number of octets which would be written to the
1228 file-stream. (thanks to Robert J. Macomber)
1229 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1230 arguments to the internal stream functions. (thanks to David
1232 * bug fix: stack exhaustion is now handled on the x86/SunOS
1233 platform. (thanks to Daisuke Homma)
1234 * bug fix: more accurate ROOM results on GENCGC platforms
1235 * optimization: improved type inference for arithmetic-for
1236 index variables in LOOP
1237 * optimization: faster floating-point SQRT on x86-64
1238 * fixed some bugs revealed by Paul Dietz' test suite:
1239 ** DOCUMENTATION returns NIL instead of "" for method combinations
1240 that don't have a docstring
1242 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1243 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1244 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1245 therefore are not customizeable by user code (as seems to be at
1246 least permitted and maybe required by AMOP). As a consolation,
1247 however, the SBCL implementation of these functions now calls
1248 REINITIALIZE-INSTANCE as specified by AMOP.
1249 * bug fix: slot-definition documentation is propagated as per ANSI
1250 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1251 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1252 argument, as do eslotd initialization methods. (from Pascal
1253 Costanza's "Closer" project)
1254 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1255 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1257 * bug fix: it is now possible to have more than one subclass of
1258 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1259 (reported by Bruno Haible, Pascal Costanza and others)
1260 * bug fix: the dependent update protocol now works for generic
1261 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1262 and Pascal Costanza)
1263 * bug fix: condition-class instances corresponding to
1264 DEFINE-CONDITION forms are now created eagerly. (reported by
1265 Kalle Olavi Niemitalo on comp.lang.lisp)
1266 * bug fix: floating point printing is more accurate in some
1267 circumstances. (thanks to Simon Alexander)
1268 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1269 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1270 * bug fix: callbacks on OS X now preserve stack-alignment.
1271 (thanks to Cyrus Harmon)
1272 * enhancement: the x86-64 disassembler is much better at
1273 disassembling SSE instructions. (thanks to Lutz Euler)
1274 * enhancement: CHECK-TYPE on a variable now allows type-inference
1275 (thanks to Vincent Arkesteijn)
1276 * optimization: improved performance of EUC-JP external format.
1277 (thanks to NIIMI Satoshi)
1278 * optimization: performance improvements to IO on file streams of
1279 :ELEMENT-TYPE CHARACTER
1280 * optimization: much faster memory allocation on x86-64
1281 * optimization: faster garbage collections (latency and throughput)
1283 * optimization: faster bignum subtraction and division on x86 and x86-64
1284 (thanks to Lutz Euler)
1285 * optimization: more accurate type-inference for loops that use a
1286 floating point index variable or a negative step.
1288 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1289 * bug fix: add a workaround to SBCL looping infinitely at startup on
1290 Linux kernels with apparently buggy implementations of personality().
1291 (thanks to Svein Ove Aas)
1292 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1293 (thanks to David Lichteblau)
1294 * bug fix: local bindings shadow global symbol macros for
1295 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1296 * optimization: non-open coded uses of numeric comparison operators
1297 (e.g. >) no longer cons when called with more than one parameter
1298 on platforms supporting dynamic-extent allocation.
1299 * enhancement: saving cores with foreign code loaded is now supported
1300 on MIPS/Linux in addition to the previously supported platforms.
1301 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1302 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1303 * bug fix: division by zero in sb-sprof when no samples were collected
1304 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1305 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1306 (thanks to Alexander Kjeldaas)
1307 * new feature: ignoring the return values of destructive functions
1308 like NREVERSE signals a compile-time style-warning.
1309 (thanks to Kevin Reid)
1310 * new feature: the alignment of alien structure fields can be
1311 explicitly specified. (thanks to Cyrus Harmon)
1312 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1313 and dump core on SIGQUIT
1315 ** incompatible change: threads do not inherit values of specials
1316 from their parents (see manual)
1317 ** bug fix: threads stacks belonging to dead threads are freed by the
1318 next exiting thread, no need to gc to collect thread stacks anymore
1319 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1320 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1321 ** bug fix: dynamic variable and thread start related gc lossage
1322 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1324 * fixed some bugs revealed by Paul Dietz' test suite:
1325 ** SUBTYPEP is slightly more accurate on heinously complicated
1326 CONS types where some of the members have uncertain (in the
1327 NIL, NIL sense) type relationships to each other.
1329 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1330 no longer purified unless :PURIFY T is explicitly specified.
1331 ** Non-purified cores are significantly smaller than before
1333 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1334 * new feature: timers based on Zach Beane's excellent timer package
1335 * added support for the following external formats: koi8-u,
1336 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1337 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1338 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1339 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1340 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1341 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1342 * incompatible change: a threaded SBCL will no longer revert to
1343 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1344 * bug fix: interrupts are disabled until startup is complete; no
1345 more sigsegvs when receiving a signal to soon
1346 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1348 * bug fix: add a workaround for the memory randomization features in
1349 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1350 workaround will only be in effect on systems with the proc filesystem
1352 * bug fix: printing objects of type HASH-TABLE signals a
1353 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1355 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1356 have been running for over 50 days. (reported by Gilbert Baumann)
1357 * bug fix: the logic for getting names of functions gets less
1358 confused when confronded with alternate-metaclass
1359 funcallable-instances. (reported by Cyrus Harmon)
1360 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1361 consistent, even on internal alternate-metaclass objects.
1362 * bug fix: flush closure information collected by physical
1363 environment analysis prepass before the main pass. (bug reported
1365 * bug fix: compiler pack phase does not modify a hashtable, which is
1366 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1367 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1368 may be expanded. (reported by Alexander <malishev> on c.l.l)
1369 * bug fix: no more style-warnings when compiling code using LAST
1370 under high-SPEED low-SPACE settings. (reported by David Wallin
1372 * fixed some incompatibilities between SBCL's MOP and the MOP
1374 ** the METAOBJECT class is now implemented;
1375 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1376 STANDARD-OBJECT, as required;
1377 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1378 now compatible (as required by VALIDATE-SUPERCLASS); there
1379 remains a consistency requirement over the presence or absence
1380 of the FUNCTION class in the superclass list of finalized
1381 classes; see the manual for more details;
1382 ** the :AROUND method for COMPUTE-SLOTS on
1383 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1384 requested slot ordering.
1386 ** bug fix: parent thread now can be gc'ed even with a live
1388 ** bug fix: binding a special with PROGV to no value is not
1389 the same as that symbol not having been bound (thanks to
1391 ** bug fix: binding specials is thread safe (thanks to
1393 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1394 and SB-SPROF do not die with 'no handler for signal XX in
1395 interrupt_handle_now(..)' anymore
1396 ** bug fix: WITH-TIMEOUT works with multiple running threads
1397 * fixed some bugs revealed by Paul Dietz' test suite:
1398 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1399 the :method-class keyword argument.
1401 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1402 * new port: the Solaris operating system on x86 processors is now
1403 mostly supported, though some rough edges in the environment
1404 remain. (thanks to Daisuke Homma)
1405 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1406 space for its heap. (thanks to Thiemo Seufer)
1407 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1408 closures. (thanks to Thiemo Seufer)
1409 * minor incompatible change: eof selects abort in the debugger.
1410 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1411 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1413 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1414 deprecated, and will go away in a future revision of SBCL.
1415 * minor incompatible change: GC-ON and GC-OFF are no longer
1416 implemented with a counter, it does not matter how many times gc
1417 is switched on or off
1418 * bug fix: discriminating functions for generic function classes
1419 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1420 make invalid assumptions about method precedence order. (reported
1422 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1423 platforms. (thanks to Thiemo Seufer)
1424 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1425 * bug fix: correct pathname printing with printer escaping is on.
1426 (thanks to Kevin Reid)
1427 * bug fix: complex VOP definitions in "user-space" no longer trigger
1428 package locks. (reported by Zach Beane)
1429 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1430 for funcallable-instance functions, and is no different from
1432 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1433 characters in the current readtable. (reported by Nicholas Neuss)
1434 * bug fix: SUBTYPEP on various CONS types returns more a more
1435 accurate acknowledgment of its certainty.
1436 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1437 lists in some cases. This partially fixes bug 384.
1438 * flush all standard streams before prompting in the REPL and the
1440 * bug fix: signal handling and triggering gc do not conflict
1441 directly anymore, in particular a high frequency sb-sprof does
1442 not prevent gc from running
1443 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1444 approximation for timezone and DST information between the
1445 universal time epoch and the smallest negative 32-bit time_t.
1446 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1447 year 1899 so long as the encoded time is non-negative.
1448 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1449 the correct answer for non-constant rotate amounts when performing
1450 an inline 32-bit rotation.
1452 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1453 there is only one thread in the session
1454 ** bug fix: memory leak for streams created in one thread and
1455 written to in another
1456 ** bug fix: lockup when compiled with gcc4
1457 ** bug fix: race that allows the gc to be triggered when gc is
1459 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1460 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1462 ** bug fix: finished threads are gc'ed properly
1463 * fixed some bugs revealed by Paul Dietz' test suite:
1464 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1465 has arguments with a different set of applicable methods from
1466 the orignal arguments.
1467 ** The type error thrown by MAP now has a correct expected-type
1469 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1470 name a compiled function.
1471 ** Three MISC tests where a large bignum was improperly coerced to
1472 a float that couldn't represent that bignum during type
1473 derivation were fixed.
1474 ** SUBTYPEP can now handle types involving the negation of a
1475 list-form FUNCTION type.
1476 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1477 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1478 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1480 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1481 * New feature: Experimental support for bivalent streams: streams
1482 opened with :element-type :default now allow character and binary
1483 (unsigned-byte 8) I/O
1484 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1485 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1487 * bug fix: no more highly sporadic "couldn't check whether ~S is
1488 readable" when reading a stream and an interrupt hits in the middle
1489 of a select system call
1490 * compiler better recognizes complex arrays (reported by Eduardo
1492 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1493 for variables on SBCL built with linkage-tables. (reported by Luis
1495 * various error reporting improvements.
1496 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1497 (Thanks to Thiemo Seufer)
1498 * bug fix: nested reader invokations work correctly
1499 * bug fix: it is possible to have simultaneous references to foreign
1500 code and foreign data with the same name.
1502 ** added x86-64 support
1503 ** incompatible change: the threading api now works with thread
1504 objects instead of thread ids
1505 ** bug fix: threads are protected from signals and interruption when
1506 starting up or going down
1507 ** bug fix: a race where an exiting thread could lose its stack to gc
1508 ** bug fix: don't halt on infinite error in threads if possible
1509 ** fixed numerous gc deadlocks introduced in the pthread merge
1510 ** bug fix: fixed thread safety issues in read and print
1511 ** bug fix: debugger doesn't hang on session lock if interrupted at
1512 an inappropriate moment
1513 ** bug fix: run-program is now thread safe(r)
1514 ** bug fix: inner with-recursive-lock no longer releases the mutex
1515 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1516 * fixed some bugs revealed by Paul Dietz' test suite:
1517 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1518 EXPECTED-TYPE slots filled.
1519 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1521 ** MAKE-CONDITION accepts classes as type-designators.
1522 ** COMPILE may never return NIL.
1523 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1524 range before calling Unix time functions
1526 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1527 * numerous signal handling fixes to increase stability
1528 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1529 * minor incompatible change: we now correctly canonize default
1530 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1531 as per the MOP, rather than the historical (INITARG INITFUNCTION
1532 INITFORM). (reported by Bruno Haible)
1533 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1534 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1535 for more information.
1536 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1537 pathname is a directory pathname.
1538 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1539 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1541 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1542 :METACLASS argument in addition to a class name. (reported by
1543 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1544 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1545 (reported by Bruno Haible; patch from Gerd Moellmann)
1546 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1548 * bug fix: more cleanups to the floating point exception handling on
1549 x86-64 (thanks to James Knight)
1550 * bug fix: the compiler does not try to constant fold calls of
1551 COERCE and BIT-* functions when they return freshly constructed
1552 objects. (reported by Nikodemus Siivola and Paul Dietz)
1553 * optimization: improved the MIPS versions of generic (in the
1554 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1555 * optimization: direct conversion of (unsigned-byte 32) to floats on
1556 the PowerPC platform.
1557 * optimization: structure instances with raw slots now use less
1558 memory, and probably show better memory locality. (thanks to
1560 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1561 are treated as requests for stack allocation on the x86-64,
1562 Alpha-32, PPC and SPARC platforms.
1563 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1564 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1565 (thanks to Tony Martinez)
1567 ** gcing a dead thread can no longer lead to lockups
1568 ** threads block signals until they are set up properly
1569 ** errno is no longer shared by threads
1570 ** interrupt-thread restores the eflags register on x86
1571 ** fixed some lockups due to gc/thread interaction
1572 * fixed some bugs revealed by Paul Dietz' test suite:
1573 ** invalid dotted lists no longer raise a read error when
1574 *READ-SUPPRESS* is T
1575 ** signal an error if a symbol that names a declaration is used
1576 as the name of a type, or vice versa
1577 ** allow using the (declare (typespec var*)) abbreviation for
1578 (declare (type typespec var*)) with all type specifiers
1579 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1580 ** always return NIL from PPRINT-POP when OBJECT is NIL
1581 ** don't signal errors when pretty-printing malformed LABELS,
1582 FLET or MACROLET forms
1583 ** declarations in a DOLIST body are also in scope for the
1585 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1587 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1590 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1591 * fixed cross-compiler leakages that prevented building a 32-bit
1592 target with a 64-bit host compiler.
1593 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1594 opened with :IF-EXISTS :OVERWRITE.
1595 * fixed bug 281: error for an invalid qualifier in a short-form method
1596 combination method is not signalled until the faulty method is called.
1597 * bug fix: iteration variable type inferrer failed to deal with open
1598 intervals. (reported by Alan Shields)
1599 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1600 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1601 or more runtime options were provided to the sbcl binary.
1602 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1603 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1604 * optimization: there's now a fast-path for fixnum arguments in the
1605 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1606 * optimization: the code generated on x86-64 is more compact thanks
1607 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1608 * bug fix: floating-point exception handling now partly works on
1609 x86-64. (Thanks to James Knight)
1610 * improvement to the MIPS backend from Thiemo Seufer: C-style
1611 64-bit long long arguments and return values to alien functions
1613 * fixed some bugs revealed by Paul Dietz' test suite:
1614 ** the type-error signalled from WARN has a filled-in DATUM slot.
1615 ** the type-error required when a stream is not associated with
1616 a file has the stream as its datum.
1617 ** type-errors on single-floats on x86-64 no longer have
1618 :INVALID-OBJECT as the datum
1619 ** the type-errors signalled for invalid function names now have
1620 a correct expected type
1621 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1622 for structures defined with a :TYPE. Documentation strings for
1623 typed structures are no longer immediately discarded
1624 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1625 broadcast streams and synonym streams. FILE-LENGTH now also works
1626 on broadcast streams.
1628 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1629 * incompatible change: the --noprogrammer option, deprecated since
1630 version 0.7.5, has been removed. Please use the equivalent
1631 --disable-debugger option instead.
1632 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1634 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1635 inoperational for a while now) has been completely removed.
1636 * null lexical environments are now printed as #<NULL-LEXENV>,
1637 significantly reducing the amount of clutter in typical backtraces.
1638 * documentation on weak pointers, finalization, and after GC hooks
1639 has been added to the manual.
1640 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1641 as other specialized array types, is much faster. SUBSEQ and
1642 COPY-SEQ on such arrays have also been sped up.
1643 * optimization: EQL is now more efficient when at least other argument
1644 is known to be of type (OR FIXNUM (NOT NUMBER)).
1645 * fixed bug: the runtime is now less vulnerable to changes in the
1646 size of the SBCL object on OS X, and virtual memory is reserved for
1647 all spaces that need to be at a fixed address.
1648 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1649 * fixed bug: finalizers and after GC hooks that cause consing are now
1651 * fixed bug: compiler error messages and summaries are now printed to
1652 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1653 * fixed inference of the upper bound of an iteration variable.
1654 (reported by Rajat Datta).
1655 * fixed bug 211e: calling local functions with duplicated constant
1656 keyword argument no longer causes a bogus style warning about an
1658 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1659 ftype declaration to be disregarded. (reported by Dave Roberts)
1660 * fixed bug 373: caused by erronous compilation of references to alien
1661 variables in the runtime on ppc/darwin.
1662 * fixed bug 376: CONJUGATE type deriver.
1663 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1664 (reported by Baughn on #lisp)
1665 * a cross-compiler bug on non-x86 platforms has been identified and
1666 fixed. (thanks to Bruno Haible)
1667 * improvements to the MIPS runtime code for increased stability.
1668 (thanks to Thiemo Seufer)
1669 * increased the maximimum compact environment size to allow
1670 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1671 * partial workaround for bug 135: don't name the function we're
1672 calling for hairy cases of EVAL, so as not to accumulate one environment
1673 entry per call to EVAL. (reported by Kevin Reid)
1674 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1675 * optimization: type testing for non-vector arrays should be faster.
1676 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1678 * bug fix: setting 31st element of a bit vector to zero did not work
1680 * bug fix: redefining a class definition which failed due to a
1681 previous accessor / function clash now works (but see BUGS entry
1682 #380 for more problems in this area). (thanks to Zach Beane)
1683 * the long form of DEFINE-METHOD-COMBINATION disables method group
1684 checking when given a single method group with pattern *. (thanks
1686 * on x86 compiler supports stack allocation of results of simple
1687 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1688 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1689 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1690 * fixed some bugs related to Unicode integration:
1691 ** the restarts for recovering from input and output encoding
1692 errors only appear when there is in fact such an error to
1694 * fixed some bugs revealed by Paul Dietz' test suite:
1695 ** MISC.549 and similar: late transformation of unsafe type
1696 assertions into derived types caused unexpected code
1698 ** SCALE-FLOAT type deriver is less wrong.
1699 ** type derivers for EXP, LOG and similar functions compute result
1700 types for complex arguments better.
1701 ** (MISC.563) CONJUGATE type deriver works for very restricted
1703 ** out-of-line type testers for character strings are available.
1704 ** EQUAL compiler transform understands specialness of objects
1706 ** accessing double-floats stored on the stack now works on x86-64.
1707 ** debugger internals could sometimes create invalid lispobjs,
1708 resulting in GC crashes.
1709 ** MISC.548: type check weakening can convert required type into
1711 ** initialization forms for bindings are not in scope of free special
1714 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1715 * incompatible change: thread support for non-NPTL systems has
1716 been removed - locking is buggy and unreliable. A threaded
1717 SBCL build will now warn at startup and refuse to create
1718 new threads, unless futex support is detected in the kernel
1719 * incompatible change: the top level REPL now has only an ABORT
1720 restart associated with it, not TOPLEVEL and ABORT as it used to.
1721 TOP and TOPLEVEL are now available as debugger commands for
1722 returning to the top level.
1723 * incompatible change: forms evaluated in the REPL now use the
1724 global optimization policy.
1725 * incompatible change: user- and system-initialization files are
1726 no longer processed with LOAD, but by READ and EVAL; hence the
1727 global optimization policy, startup package, readtable, etc,
1729 * The .fasl file format number has been incremented because of
1730 various incompatible changes.
1731 * internal entry point details and argument counts no longer appear
1732 in backtraces unless explicitly requested by setting
1733 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1734 * built-in and standard functions no longer have names like "top
1735 level local call to FOO".
1736 * fixed bug 32: functions defined in non-null lexical environments
1737 now have more legible printed representation
1738 * fixed bug 33: functions defined in non-null lexical environemnts
1739 are now more amenable to inspection by INSPECT.
1740 * workaround for bug 354: XEPs no longer appear in backtraces unless
1741 explicitly requested.
1742 * fixed bug: receiving the signal which results from attempting to
1743 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1744 SIGBUS on other *BSDs) on architectures where the C stack is also
1745 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1746 to debugger confusion or wild instability. (reported by Cheuksan
1748 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1749 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1750 (reported by Lutz Euler)
1751 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1752 compiled code. (reported by Paul Dietz)
1753 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1754 specialized parameter to a method to something that is not TYPEP
1755 the specializer is now possible.
1756 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1757 face of package deletion.
1758 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1759 pathname. (reported by David Tolpin on c.l.l)
1760 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1761 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1762 STRING-STREAM and FILE-STREAM, respectively.
1763 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1764 than previously; in addition, its test suite is now run on build.
1765 (thanks to Luke Gorrie)
1766 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1767 * optimization: added a immediate representation for single-floats
1769 * fixed some bugs revealed by Paul Dietz' test suite:
1770 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1771 ** attempting to create a package with a colliding nickname causes
1772 correctable errors to be signalled.
1773 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1774 ** several x86-64 backend bugs related to sign-extension of immediate
1777 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1778 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1779 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1781 * fixed loading of multiply forward-referenced layouts.
1782 (thanks to Cheuksan Wang)
1783 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1784 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1785 (see COMPILE-FILE documentation for details of :PRINT option)
1786 * fixed bugs 19 and 317: fixed-format floating point printing is
1787 more accurate. This also fixes a bug reported by Adam Warner
1788 related to the ~@F format directive.
1789 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1791 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1792 dispatch table if the from-char is a dispatch macro character.
1793 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1794 by the wordsize no longer ignore the last word. (reported by Lutz
1796 * fixed bug in type checking of dynamic-extent variables. (reported
1798 * optimization: sequence traversal functions use their freedom to
1799 coerce function designators to functions.
1800 * optimization: code with many calls to CLOS methods specialized on
1801 CLOS classes has had redundant type checks removed.
1802 * optimization: added declarations to speed up operations that access
1803 the internal character database (for example STRING-UPCASE)
1804 * optimization: comparison operations between floats and sufficiently small
1805 fixnums no longer create extra rationals
1806 * fixed some bugs related to Unicode integration:
1807 ** portions of multibyte characters at the end of buffers for
1808 character-based file input are correctly transferred to the
1809 start of the buffer at the next read.
1810 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1811 passing it through to OPEN.
1812 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1813 argument given to internal calls to OPEN.
1814 ** the built-in comment readers (introduced by character sequences
1815 ";" and "#|") are more forgiving to encoding errors; they will
1816 STYLE-WARN and then attempt to resync the stream at a character
1817 boundary. (thanks to Teemu Kalvas)
1818 * fixed some bugs in the x86-64 port:
1819 ** Negative short int return values from c-calls are sign-extended
1821 ** The stack is aligned to 16-bytes for c-calls, as required by
1822 the ABI. (thanks to Cheuksan Wang)
1823 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1824 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1825 for enums. (thanks to Vincent Arkesteijn)
1826 ** Multiple small optimizations and bugfixes for floating point
1828 * fixed some bugs revealed by Paul Dietz' test suite:
1829 ** Space, Tab, Linefeed, Return and Page have the invalid
1830 secondary constituent character trait.
1831 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1833 ** WITH-INPUT-FROM-STRING should only update the index place on
1835 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1836 works more reliably.
1837 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1838 with one-dimensional arrays with fill pointers.
1839 ** TYPE-OF failed on a complex with an integer realpart and a
1841 ** compiler failure during type inference for the code of form
1842 (IF (EQL X (THE ...)) ...) (MISC.535).
1844 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1845 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1846 platform. The port supports 61-bit fixnums, large memory spaces
1847 and reloading shared object files.
1848 * enhancement: saving cores with foreign code loaded is now
1849 supported on ppc/Darwin in addition to the previously supported
1851 * enhancement: the statistical profiler now walks deeper into the
1852 call stack for more meaningful call-graphs and accrued time
1853 reports (x86/x86-64 only). It also now reports time spent in
1855 * enhancement: it is now possible to trace most individual methods
1856 of a generic function in addition to tracing the generic function
1858 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1860 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1861 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1862 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1863 produces an error. (thanks to Vincent Arkesteijn)
1864 * bug fix: NAMESTRING on pathnames with :WILD components in their
1865 directories works correctly. (thanks to Artem V. Andreev)
1866 * fixed bug 125: compiler preserves identity of closures. (reported
1868 * bug fixed: functions with &REST arguments sometimes failed with
1869 "Undefined function" when compiled with (DEBUG 3). (reported by
1871 * bug fix: overflow during compiling of setting element of a bit
1872 vector with constant index and value. (reported by Timmy Douglas)
1873 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1874 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1875 * on x86 compiler partially supports stack allocation of dynamic-extent
1877 * GO and RETURN-FROM do not check the extent of their exit points
1878 when compiled with SAFETY 0.
1879 * fixed some bugs related to Unicode integration:
1880 ** encoding and decoding errors are now much more robustly
1881 handled; it should now be possible to recover even from invalid
1882 input or output to the terminal. (thanks to Teemu Kalvas)
1883 ** provided a first cut at implementing STRING-TO-OCTETS and
1884 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1885 ** altered the SB-MD5 contributed module slightly, changing the
1886 interface just enough for it to be supportable for builds where
1887 lisp characters are not eight bits.
1888 * fixed some bugs revealed by Paul Dietz' test suite:
1889 ** the FORMATTER-generated functions for ~V[ conditionals require
1890 the correct number of arguments.
1891 ** READ-FROM-STRING returns the mandated second value when applied
1892 to displaced strings.
1893 ** the #\Rubout and #\Backspace characters are treated as invalid
1894 constituent characters by the tokenizer.
1896 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1897 * new feature: reloading changed shared object files with
1898 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1899 * new feature: references to foreign variables and functions
1900 can now be compiled and loaded before the corresponding shared
1901 object file is loaded, as long as the foreign definitions are
1902 available at runtime.
1903 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1904 supported. (thanks to Dan Debertin)
1905 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1906 just keywords. (thanks to Vincent Arkesteijn)
1907 * fixed bug #331: structure-class instances corresponding to
1908 DEFSTRUCT forms are now created eagerly.
1909 * fixed bug #345: backtraces from calls to undefined functions work
1910 on x86 as well. Related bug #61 is now also partially fixed on x86
1911 (backtraces from throws to unknown catch tags.)
1912 * bug fix: lambda-list parsing is now stricter vrt. order and number
1913 of lambda-list keywords.
1914 * bug fix: as specified by AMOP, an error is signalled if a
1915 class-option appears multiple times in a DEFCLASS form. (reported
1917 * bug fix: RANDOM can be compiled when the compiler derives the type
1918 of its numeric argument as a disjoint set of small integers.
1919 (reported by Paul Dietz)
1920 * bug fix: starting a core saved with shared objects loaded when
1921 those objects are not available no longer causes threaded SBCL to
1922 hang. (reported by Sean Ross)
1923 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1925 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1926 argument, which must always be NIL. (reported by Kalle Niemitalo)
1927 * bug fix: printing 1.0d+23 no longer results in an error.
1928 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1929 * bug fix: structure slot setters preserve evaluation order. (thanks
1931 * fixed some bugs related to Unicode integration:
1932 ** RUN-PROGRAM can allow its child to take input from a Lisp
1933 stream. (reported by Stefan Scholl)
1934 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1935 locales. (reported by Ken Causey)
1936 * fixed some bugs revealed by Paul Dietz' test suite:
1937 ** INCF, DECF and REMF evaluate their place form as specified in
1939 ** FORMATTER expands ~{ ~} iteration directives with V or #
1940 parameters correctly.
1941 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1942 consequent uses no arguments correctly.
1943 ** the system has a partial understanding of the (COMPLEX RATIO)
1945 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1948 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1949 * new feature: a build-time option (controlled by the :SB-UNICODE
1950 keyword feature, enabled by default) for building the system with
1951 support for the entire 21-bit character space defined by the
1953 * new feature: the system now has rudimentary external-format
1954 support; the primary user-visible change at this time is that
1955 characters with the high bit set (such as lower-case-e-acute) will
1956 print correctly to a terminal in a UTF-8 environment.
1957 * minor incompatible change: BASE-CHAR no longer names a class;
1958 however, CHARACTER continues to do so, as required by ANSI.
1959 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1960 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1961 has been moved to the SB-EXT package (temporarily re-exported from
1963 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1964 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1966 * fixed bug #351: better error-handlind and reporting for malformed
1968 * fixed bug #350: bignum-printing is now more memory-efficient,
1969 allowing printing of very large bignums, eg. (expt 2 10000000).
1970 (reported by Bruno Haible)
1971 * fixed bug #302: better primitive-type selection for intersection
1973 * fixed bug #308: non-graphic characters now all have names, as
1974 required. (reported by Bruno Haible)
1975 * bug fix: redefining a class with different superclasses now correctly
1976 removes it from the direct-subclasses of its previous superclasses.
1977 (reported by David Morse)
1978 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1979 new value now works. (reported by Bruno Haible)
1980 * bug fix: correct canonicalization of multiple non-standard slot
1981 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1982 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1983 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1984 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1985 now exists, an signals an error.
1986 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1987 during macroexpansion for non-iteration variables as well. (reported
1988 by Bruno Haible for CMUCL)
1989 * bug fix: Cyclic structures and unprintable objects in compiler
1990 messages no longer cause errors. (reported by Bruno Haible)
1991 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1992 and READ-FROM-STRING all now return a primary value of NIL if
1993 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1994 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1995 (reported by Bruno Haible for CMUCL)
1996 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1997 do not designate a condition. (reported by Bruno Haible for
1999 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2000 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2001 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2002 permitting resolution in favour of any of the conflicting symbols.
2003 (reported by Bruno Haible for CMUCL)
2004 * bug fix: EQUAL compiler optimizations is less aggressive on
2005 strings which can potentially compare true despite having distinct
2006 specialized array element types.
2007 * bug fix: unit enumerations can be defined without dividing by
2008 zero. (thanks to Vincent Arkesteijn)
2009 * FORMAT compile-time argument count checking has been enhanced.
2010 (report from Bruno Haible for CMUCL)
2011 * a partial workaround for the bug 262: the compiler does not try to
2012 inline-expand a local function doing RETURN-FROM from a deleted
2013 BLOCK. (thanks to Peter Denno for the bug report and to David
2014 Wragg for the simple test case)
2015 * fixed some bugs revealed by Paul Dietz' test suite:
2016 ** RENAME-PACKAGE allows all package designators as new package
2018 ** constraint propagation and lambda variable substitution are
2019 more cautious in dealing with partially deleted code.
2020 ** compiler sometimes lost reoptimization passes.
2021 ** CERROR, given a condition as condition designator, passes its
2022 remaining arguments to the continue format control without
2024 ** Case-altering FORMAT directives work correctly on non-ASCII
2026 ** The REAL type specifier handles bounds outside the floating
2027 point ranges without signalling FLOATING-POINT-OVERFLOW.
2028 ** Functions with IR1-transformations can create intercomponent
2029 references to global functions.
2030 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2032 ** FORMAT ~R treats a nil value for its first parameter correctly.
2034 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2035 * enhancement: saving cores with foreign code loaded is now
2036 supported on x86/NetBSD and sparc/Linux in addition to the previously
2037 supported platforms.
2038 * bug fix: on some platforms repeated installations caused multiple
2039 copies of HTML documentation to be installed -- should not happen
2040 any more. (reported by Stefan Scholl)
2041 * bug fix: parsing self-recursive alien record types multiple times
2042 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2043 original patch by Helmut Eller for CMUCL)
2044 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2045 (thanks to Richard Kreuter)
2046 * bug fix: defining classes whose accessors are methods on existing
2047 generic functions in other (locked) packages no longer signals
2048 bogus package lock violations. (reported by François-René Rideau)
2049 * bug fix: special variables as DEFMETHOD parameters no longer have
2050 associated bogus type declarations. (reported by David Wragg and
2052 * bug fix: read-write consistency on streams of element-type
2053 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2054 * bug fix: redefiniton of the only method of a generic function with
2055 no DEFGENERIC no longer emits a full WARNING. In addition,
2056 redefinition of generic functions with no DEFGENERIC to an
2057 incompatible lambda list now signals an error. (thanks to Zach
2059 * bug fix: DEFGENERIC now works even when there's a function of the
2060 same name in an enclosing lexical environment. (thanks to Zach
2062 * fixed compiler failure, caused by instrumenting code during
2063 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2064 * optimization: added loop analysis and improved register allocation
2065 * fixed some bugs revealed by Paul Dietz' test suite:
2066 ** POSITION on displaced vectors with non-zero displacement
2067 returns the right answer.
2068 ** (SIMPLE-STRING) is a valid type specifier for sequence
2070 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2072 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2073 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2075 ** The justification version of the FORMAT ~< directive treats
2076 non-zero minpad parameter correctly.
2078 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2079 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2080 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2081 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2082 the supported interface.
2083 * new feature: Single-stepping of code compiled with DEBUG 2 or
2084 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2085 * new feature: saving cores with foreign code loaded is now
2086 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2087 Timothy Moore's work for CMUCL)
2088 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2089 parameters to * instead of NIL if no initform is supplied.
2090 (reported by Johan Bockgaard)
2091 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2092 correctly when FUNCALL appears as the car of the form. Note:
2093 despite this FUNCALL forms are not currently subject to
2094 compiler-macro expansion. (port of Raymond Toy's fix for the
2095 same from CMUCL, reported by Johan Bockgaard)
2096 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2097 (thanks for Teemu Kalvas)
2098 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2099 case instead of terminating the iteration (thanks for Julian
2100 Squires, Sean Champ and Raymond Toy)
2101 * bug fix: incorrect expansion of defgeneric that caused a style
2102 warning. (thanks for Zach Beane)
2103 * bug fix: slot accessor effective method computation works properly
2104 for classes with multiple non-standard applicable methods on
2105 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2106 * on x86 compiler supports stack allocation of results of LIST and
2107 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2108 CMUCL implementation by Gerd Moellmann)
2109 * fixed some bugs revealed by Paul Dietz' test suite:
2110 ** FORMAT strings with both the ~<~:;~> form of the justification
2111 directive and pretty-printing directives cause an error.
2113 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2114 * incompatible change: the internal functions
2115 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2116 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2117 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2118 instead of the old functions.
2119 * new feature: on platforms where "dladdr" is available foreign
2120 function names now appear in backtraces. (based on Helmut Eller's
2122 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2123 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2125 * documentation: ASDF manual is now distributed with SBCL.
2126 * bug fix: SBCL can now load its contributed modules with REQUIRE
2127 even if the system-provided entries have been removed from
2128 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2130 * bug fix: backtraces involving undefined functions or assembly
2131 routines are more informative. (thanks to Brian Downing)
2132 * bug fix: mutually referent alien structures now work correctly.
2133 (reported by Rick Taube)
2134 * bug fix: structures defined by WITH-ALIEN can be referred to
2135 within other definitions in the same WITH-ALIEN.
2136 * bug fix: division operators (MOD, TRUNCATE and the like) with
2137 constant zero divisors and integer dividends no longer generate
2139 * bug fix: provide default methods for INPUT-STREAM-P and
2140 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2141 * bug fix: improve the detection and resolution of MOP metacycles
2142 (where effective method computation depends on the generic function
2143 having its effective method computed). (reported by Bruno Haible)
2144 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2145 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2146 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2147 * bug fix: pathnames with relative directory components can be
2148 represented relative to default pathnames.
2149 * optimization: in taking the GCD of bignums, reduce the two bignums
2150 to approximately the same size (using Euclid's algorithm) before
2151 applying the more sophisticated binary GCD. (thanks to Juho
2153 * optimization: COUNT on bitvectors now operates word-at-a-time.
2154 * optimization: ASH with a positive, but not necessarily constant,
2155 (leftwards) shift, when in a modular context, is compiled to a
2157 * fixed some bugs revealed by Paul Dietz' test suite:
2158 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2159 if the corresponding argument is NIL.
2160 ** FORMAT directives accepting a minpad parameter treat negative
2162 ** literal commas as character parameters to FORMAT directives are
2164 ** literal spaces directly after ~<Newline> directives within a
2165 format-logical-block (~:< ~@:>) do not induce :FILL-style
2166 conditional newlines.
2167 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2168 as specified: it no longer includes conditional newlines).
2169 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2171 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2172 :PER-LINE-PREFIX argument does not evaluate to a string.
2174 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2175 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2176 the manual for details; for now, package locks can be disabled by
2177 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2178 if no major problems are found then it is likely that they will be
2179 compiled in unconditionally.
2180 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2181 unsupported operators on all platforms. To load a shared library
2182 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2183 object file, link it into a shared library outside of SBCL and
2184 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2186 * bug workaround: ROOM T and the GC were not working together
2187 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2188 reporting facility aren't preserved. That reporting has been
2189 disabled, so now until and unless someone figures out how to make it
2190 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2191 * minor incompatible change: as threatened around sbcl-0.8.0, the
2192 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2193 The symbols are also exported from SB-PCL for backwards
2194 compatibility, but more so than before SB-PCL should be treated as
2195 an implementation-internal package.
2196 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2198 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2199 It is known as of this release not to work on the Alpha, however.
2200 * fixed bug #167: errors signalled due to illegal syntax in method
2201 bodies are now more legible.
2202 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2203 designators and can hence be used with TYPEP.
2204 * fixed bug #333: CHECK-TYPE now ensures that the type error
2205 signalled, if any, has the right object to be accessed by
2206 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2207 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2208 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2210 * fixed bug #334: programmatic addition of slots using specialized
2211 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2212 and :ALLOCATION :CLASS slots.
2213 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2214 float exponents. (rereported by Peter Seibel)
2215 * fixed a bug: #\Space (and other whitespace characters) are no
2216 longer considered to be macro characters in standard syntax by
2217 GET-MACRO-CHARACTER.
2218 * fixed bug: initialization of condition class metaobjects no longer
2219 causes an instance of the condition to be created. (reported by
2221 * fixed bug: it is now possible to have slots such that
2222 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2223 description is neither :INSTANCE nor :CLASS.
2224 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2225 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2226 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2227 non-standard SLOT-DEFINITION-ALLOCATION values.
2228 * fixed bugs: various race conditions handling exiting threads.
2229 CL-PPCRE's thread torture test now passes.
2230 * fixed arguably-a-bug: GC time proportional to number of threads in
2231 system even when most of them are idle
2232 * optimization: improved performance of BIT and SBIT on bit-vectors.
2233 * .fasl file incompatibility: The fasl file version number has
2234 been incremented because of changes associated with package locks.
2236 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2237 * minor incompatible change: the system no longer provides
2238 optimization hints (conditions which are TYPEP
2239 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2240 mode; these hints are still emitted when higher SPEED optimization
2242 * new contrib module: a sampling profiler (profiling by statistical
2243 sampling, rather than by instrumenting functions) is available as
2244 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2245 * the behaviour of the standard function ED is now customizeable by
2246 third parties through a hook variable: see ED's documentation
2247 string for information on the protocol.
2248 * the compiler no longer emits efficiency notes for (FUNCALL X)
2249 when the type of X is uncertain under default optimization
2251 * fixed bug 276: mutating a binding of a specialized parameter to a
2252 method to something that is not TYPEP the specializer is now
2254 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2255 exhibit the required behaviour on the x86 platform. (thanks to
2256 Peter van Eynde, Eric Marsden and Bruno Haible)
2257 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2258 even for difficult arguments. (reported by Peter Graves)
2259 * fixed bug 141a: the backquote printer now descends quoted
2261 * fixed another bug in backquote printing: no more destructive
2262 modification of the form's list structure. (reported by Brian
2264 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2265 move between its address being taken and the call to
2266 interrupt_thread, fixing a crashing race condition.
2267 * the SB-POSIX contrib implementation has been adjusted so that it
2268 no longer exhibits ridiculously poor performance when constructing
2269 instances corresponding to C structs.
2271 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2272 * minor incompatible change: the sb-grovel contrib now treats C
2273 structures as alien (in the sense of SB-ALIEN) objects rather than
2274 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2275 has implications for memory management of client code
2276 (sb-grovel-returned objects must now be manually managed) and for
2277 type safety (alien objects now have full types).
2278 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2279 used to control emission of compiler diagnostics, rather than the
2280 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2281 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2282 quality should be considered deprecated.
2283 * install.sh now installs the user manual as well
2284 * (not quite a new documentable feature, but worth considering in
2285 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2286 beginnings of a semantically meaningful condition hierarchy is
2287 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2289 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2290 designator as the defaults argument.
2291 * fixed bug: Displaced arrays whose displaced-to array has become
2292 too small now cause ARRAY-DIMENSION to signal an error, providing
2293 for safer bounds-checking. (reported by Bruno Haible)
2294 * fixed bug: DEFCLASS slot definitions with identical :READER and
2295 :WRITER names now signal a reasonable error. (reported by Thomas
2297 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2299 * fixed bug: Invalid slot specification errors now print correctly.
2300 (thanks to Zach Beane)
2301 * fixed bug 320: Shared to local slot value transfers in class
2302 redefinitions now happen corrently from superclasses as
2303 well. (reported by Bruno Haible)
2304 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2306 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2307 improper lists correctly. (reported by Bruno Haible)
2308 * fixed bug 313: source-transform for <fun-name> was erroneously
2309 applied to a call of a value of a variable with name <fun-name>.
2310 (reported by Antonio Menezes Leitao)
2311 * fixed bug 307: The obsolete instance protocol ensures that
2312 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2313 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2314 remove dead unknown-values globs from the middle of the stack.
2315 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2316 easier to resume long computations after using *BREAK-ON-SIGNALS*
2317 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2318 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2319 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2320 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2321 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2322 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2324 * fixed a (fairly theoretical) bug in string printing: if
2325 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2326 does not have array-element-type equal to the most general string
2328 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2329 function name. (thanks to Nikodemus Siivola)
2330 * fixed bug: compile-time format string checker failed on
2331 non-closed ~{. (reported by Thomas F Burdick)
2332 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2333 don't warn on legal loop code involving more than one aggregate
2334 boolean. (thanks to Nikodemus Siivola)
2335 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2336 in keyword position to MAKE-PACKAGE was not being reported as
2338 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2339 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2341 * fixed bugs 280 and 312: the checking for multiple definitions in a
2342 file is less likely to become confused by uses of inline
2344 * fixed bug: the #S reader macro performs the keyword coercion
2345 specified for slot names. (reported by Kalle Niemitalo)
2346 * fixed bug: lambda lists may contain symbols whose names start with
2347 & but are not lambda-list-keywords; their occurrence triggers a
2349 * fixed bug 321: define-method-combination argument lambda lists do
2350 not cause invalid code to be generated when &optional or &aux
2351 variables have default values. (reported by Bruno Haible)
2352 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2353 have CLOS classes; this appears also to have fixed reported
2354 instability in stack exhaustion detection.
2355 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2356 MUFFLE-WARNING when no associated restart is present is now
2358 * optimization: rearranged the expansion of various defining macros
2359 so that each expands into only one top-level form in a
2360 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2362 * optimization: used a previously little-used slot in symbols to
2363 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2365 * fixed some bugs revealed by Paul Dietz' test suite:
2366 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2368 ** Fixed an optimization bug related to inheritance of initforms
2369 from local to shared slots.
2370 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2371 ** CAST optimizer forgot to flush argument derived type.
2372 ** print/read consistency on floats is now orders of magnitude
2373 more likely. (thanks also to Bruno Haible for a similar report
2375 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2376 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2377 for objects of type REAL. Make it so.
2378 ** SXHASH is specified (infelicitously) to respect similarity,
2379 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2380 it so. (thanks to Markus Ziegler)
2381 ** on the Alpha, the compiler succeeds in compiling functions
2382 returning a known number of arguments greater than 63.
2383 ** fixed handling of invalid NIL arguments in keyword position
2385 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2387 ** provided a readably-printable representation for RANDOM-STATE
2389 ** ensured that pathnames, where they have a namestring, always
2390 print using #P"..." syntax.
2392 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2393 * Support for the forthcoming 2.0 version of the NetBSD kernel
2394 running on x86 hardware has been added. (thanks to Perry
2395 E. Metzger most immediately, and others for their past work)
2396 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2397 current release version; SBCL's OpenBSD support had been broken
2398 since about the time of OpenBSD's switch to ELF binary format.)
2399 * [placeholder for DX summary]
2400 ** user code with &REST lists declared dynamic-extent, under high
2401 speed or space and low safety and debug optimization policy.
2402 * The manual has been converted to Texinfo format and the debugger
2403 chapter from the cmucl manual has been added.
2404 * A facility has been added to extract documentation strings from
2405 sbcl and store them as Texinfo-formatted snippets for inclusion in
2406 the manual (via Texinfo's @include directive)
2407 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2408 the test case to Dave Roberts)
2409 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2410 pointers. (reported by Sean Ross)
2411 * bug fix: PROFILE output is printed nicely even for large numerical
2412 values. (thanks to Zach Beane)
2413 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2414 greater than 32 handle EOF correctly.
2415 * bug fix: on X86 an immediate argument of the IMUL instruction is
2416 correctly printed in disassembly. (thanks to Lutz Euler)
2417 * bug fix: class slots in redefined classes preserve their old
2418 values. (thanks to Bruno Haible and Nikodemus Siivola)
2419 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2420 succeeds. (reported by Marco Baringer)
2421 * fixed some bugs revealed by Paul Dietz' test suite:
2422 ** READ-SEQUENCE now works on ECHO-STREAMs.
2423 ** RATIONALIZE works more according to its specification. (thanks
2426 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2427 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2428 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2429 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2430 should matter to you only if you rebind the printer control
2431 variables and then find you want different bindings in the
2432 debugger than in the ordinary execution of your program.)
2433 * The runtime build system has been tweaked to support building
2434 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2435 assembler and linker. (thanks to Nikodemus Siivola)
2436 * Unbound, undefined, undeclared variables now trigger full
2437 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2438 more often programmer error than deliberate exploitation of undefined
2440 * optimization: the hash algorithm for strings has changed to one
2441 that is less vulnerable to spurious collisions. (thanks to Juho
2443 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2444 needless bounds checking. (thanks to Juho Snellman)
2445 * optimization: implemented multiplication as a modular
2446 (UNSIGNED-BYTE 32) operation on the PPC backend.
2447 * fixed some bugs revealed by Paul Dietz' test suite:
2448 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2450 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2451 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2452 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2454 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2456 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2458 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2459 their output stream on EOF from read.
2460 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2461 have been read to end-of-file.
2462 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2464 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2465 description of determination of which consecutive characters
2467 ** Printing the "Space" character with escaping on now yields "#\\ ",
2468 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2469 ** Reading floating-point numbers with *READ-BASE* set to a number
2470 less than 10 works correctly.
2471 ** Reading floating-point numbers with *READ-BASE* set to a number
2472 more than 10 works correctly.
2473 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2474 the readtable currently in effect.
2476 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2477 * minor incompatible change: parsing of namestrings on a physical
2478 (Unix) host has changed; numbers after the final #\. in a
2479 namestring are no longer interpreted as a version field. This is
2480 intented to be largely invisible to the user, except that the
2481 meaning of the namestring "*.*.*" has changed: it now refers to a
2482 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2483 should usually be replaced by
2484 (make-pathname :name :wild :type :wild :version :wild)
2485 with the added benefit that this is more likely to be portable.
2486 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2487 option to OPEN now signals an error if the file being opened
2488 exists; this may have an impact on existing code.
2489 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2490 signals received, on the PowerPC platforms (both Linux and
2491 Darwin). (thanks to Pierre Mai for pointing out the location of
2493 * several fixes on OS X: The system now builds and runs cleanly on
2494 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2495 (thanks to Brian Mastenbrook)
2496 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2497 second-resolution: integer multiples of 1/3600 between -24 and 24.
2498 (thanks to Vincent Arkesteijn)
2499 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2500 type when called with 1 argument; PEEK-CHAR checked type of
2501 PEEK-TYPE only after having read first character from a
2502 stream. (reported by Peter Graves)
2503 * bug fix: the garbage collector now has much better locality
2504 behaviour, and in particular no longer treats all memory as being
2505 exhausted when many small objects point to each other in a deeply
2507 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2508 recognized as being TYPEP their class.
2509 * bug fix: the PUSHNEW documentation string has been corrected.
2510 (thanks to Vincent Arkesteijn)
2511 * bug fix: defaulting of the value for the last of an atypically
2512 large number of multiple values being bound was not being
2513 performed correctly on the Alpha or PPC platforms
2514 * optimization: implemented multiplication as a modular
2515 (UNSIGNED-BYTE 32) operation on the x86 backend.
2516 * optimization: SEARCH on simple-base-strings can now be open-coded.
2517 (see also contrib/compiler-extras.lisp for inspiration for
2518 teaching the compiler about the Boyer-Moore algorithm).
2519 * value, returned by MAX (and MIN) called with several EQUALP, but
2520 not EQL, arguments now does not depend on compiler settings.
2521 * fixed some bugs revealed by Paul Dietz' test suite:
2522 ** in stack analysis liveness information is propagated from
2523 non-local entry points.
2524 ** pathwise CAST removing failed when the CAST node did not start
2526 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2527 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2529 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2530 host is already defined.
2531 ** RENAME-FILE works on streams instead of signalling an internal
2533 ** PEEK-CHAR uses the current readtable when determining whether
2534 or not a character is whitespace.
2535 ** MERGE-PATHNAMES handles the case when the pathname does not
2536 specify a name while the default-pathname specifies a version.
2537 ** Pathnames now stand a better chance of respecting print/read
2539 ** Attempting to use standardized file system operators with a
2540 pathname with invalid :DIRECTORY components signals a
2542 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2544 ** DIRECTORY on logical pathnames is more correct.
2545 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2546 signal a TYPE-ERROR if their argument is not a stream.
2547 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2548 designator argument does not designate a stream.
2549 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2550 examining the synonym.
2551 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2553 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2554 element-type larger than ([UN]SIGNED-BYTE 32).
2556 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2557 * When built with the :SB-FUTEX feature, threaded builds now take
2558 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2559 for faster/more reliable mutex and condition variable support.
2560 * Incompatible change (but one you probably shouldn't have been using
2561 anyway): the interface and code for arbitrating between multiple
2562 threads in the same user session has been redesigned.
2563 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2564 error when called without an explicit environment argument.
2565 (thanks to Nikodemus Siivola)
2566 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2567 confused about their position. (thanks to Adam Warner and Gerd
2569 * bug fix: Pretty printing backquoted forms with unquotations in the
2570 argument list position of various code constructs such as LAMBDA
2571 now works correctly. (reported by Paul Dietz)
2572 * bug fix: Pretty printing unquotations no longer loses all
2573 stream position information.
2574 * optimization: performance of string output streams is now less
2575 poor for multiple small sequence writes.
2576 * optimization: performance of CSUBTYPEP in the presence of complex
2577 expressions involving CONS and NOT many times has been improved.
2578 (reported by Paul Dietz)
2579 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2581 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2582 streams for the REPL, for the debugger, and so on. (thanks to
2584 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2585 * fixed some bugs revealed by Paul Dietz' test suite:
2586 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2587 is ignored if it is too small, rather than propagating through
2588 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2589 ** extremely complex negations of CONS types were not being
2590 sufficiently canonicalized, leading to inconsistencies in
2592 ** VALUES tranformer lost derived type.
2594 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2595 * fixed a bootstrapping bug: the build process no longer assumes
2596 that the various BOOLE-related constants have the same value in
2597 host and target lisps. (noted by Paul Dietz' test suite on an
2598 SBCL binary built from CLISP)
2599 * The system can now be dynamically linked on the MIPS platform,
2600 which enables dynamic loading of foreign code from Lisp. (thanks
2601 to Ralf Baechle for discussions on the MIPS ABI)
2602 * The system now records debugging information for its own source
2603 files in a filesystem-position-independent manner, relative to
2604 the "SYS" logical host.
2605 * fixed a compiler bug: MV-LET convertion did not check references
2606 to the "max args" entry point. (reported by Brian Downing)
2607 * tweaked disassembly notes to be less confident about proclaiming
2608 some instruction as an LRA. (thanks to Brian Downing)
2609 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2610 now each have their own history, command character, and other
2611 characteristics. (thanks to David Lichteblau)
2612 * fixed some bugs revealed by Paul Dietz' test suite:
2613 ** compiler failure in compiling LOGAND expressions including a
2615 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2616 shift greater than 32.
2617 ** FLUSH-DEST did not mark blocks for type check regeneration.
2618 ** HANDLER-CASE failed to accept declarations in handler clauses
2619 in some circumstances.
2621 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2622 * New code in contrib/sb-introspect (still probably not entirely
2623 stable yet) provides some support for smart Lisp development
2624 environments like SLIME.
2625 * The conditions signalled for errors occurring when loading .fasl
2626 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2627 in a way which should help ASDF recover gracefully.
2628 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2629 stuff has been cleaned up. If you code contrib/ stuff, this might
2630 affect you, and you can look at contrib/README, contrib/STANDARDS,
2631 and/or the 0.8.4.27 diff to check.
2632 * In full calls the compiler now does not generate checks for declared
2633 argument types for all arguments.
2634 * various threading fixes
2635 ** and some experimental patches which didn't make it into
2636 the main tree for this release, but which are shipped in
2637 contrib/experimental-thread.patch as a possible fix for some
2638 failures (deadlock, spinning...) in GC-intensive multithreaded
2640 * fixed PPC build problem (source code incompatibility of different
2641 library versions): added offsetof() hackery which attempts to divine
2642 where glibc maintainers put uc_mcontext today
2643 * fixed bug 282: compiler does not trust type assertions while passing
2644 arguments to a full call.
2645 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2646 &OPTIONAL VALUES type parameter.
2647 * fix bug 214: algorithm for noting rejected templates is now more
2648 similar to that of template seletion. (also reported by rydis on
2650 * fixed bug 141b: printing backquoted information readably and prettily
2651 inserts a space where necessary.
2652 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2653 (CHARACTER 10) are now reported as errors, rather than propagated
2654 as unknown types. (reported by piso on #lisp)
2655 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2656 with values NIL and :ERROR. (thanks to Milan Zamazal)
2657 * fixed bug 191c: CLOS now does proper keyword argument checking as
2658 described in CLHS 7.6.5 and 7.6.5.1.
2659 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2660 longer raise an error; further, using a list as a for-as-arithmetic
2661 counter now raises a meaningful error.
2662 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2663 now understood by sequence creation functions such as MAKE-SEQUENCE
2665 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2666 a STRING-INPUT-STREAM.
2667 * compiler enhancement: SIGNUM is now better able to derive the type
2669 * type declarations inside WITH-SLOTS are checked. (reported by
2671 * fixed some bugs revealed by Paul Dietz' test suite:
2672 ** incorrect optimization of TRUNCATE for a positive first
2673 argument and negative second.
2674 ** compiler failure in let-convertion during flushing dead code.
2675 ** compiler failure while deriving type of TRUNCATE on an
2676 interval, containing 0.
2677 ** ASH of a negative bignum by a negative bignum count now returns
2679 ** intersection of CONS types now canonicalizes properly, fixing
2680 inconsistencies in SUBTYPEP.
2682 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2683 * incompatible change: The --disable-debugger command line
2684 option now clobbers the debugger at a more fundamental
2685 level, by redefining #'INVOKE-DEBUGGER instead of by
2686 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2687 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2688 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2689 enter the debugger REPL and then suffer recursive errors
2690 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2691 while under the new system, BREAK in --disable-debugger mode
2692 terminates the system just as an unhandled error would.
2693 * fixed compiler performance when processing loops with a step >1;
2694 * bug fix: DOCUMENTATION now retrieves generic function
2695 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2696 support has been systematized, and now supports the methods
2697 specified by ANSI, along with a default method and a method for
2698 slot documentation. (reported by Nathan Froyd)
2699 * bug fix: effective methods associated with a generic function are
2700 no longer cached over a change of that generic function's method
2701 combination. (reported by Andreas Fuchs)
2702 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2703 names a non-existent directory. (thanks to Andreas Fuchs)
2704 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2705 the PPC platform, lead to stack corruption; this has been fixed.
2706 (reported by Rainer Joswig)
2707 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2708 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2709 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2710 arithmetic in general, is now much more reliable on the PPC
2712 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2713 platform now returns the right answer.
2714 * optimization: restored some effective method precomputation in
2715 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2716 precomputation is now tunable.
2717 * optimization: compiler-internal data structure use has been
2718 reviewed, and changes have been made that should improve the
2719 performance of the compiler by about 20%.
2720 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2721 simple-base-strings and simple-bit-vectors is improved.
2722 * optimization: the optimization of 32-bit logical and arithmetic
2723 functions introduced in version 0.8.3 on the x86 has been
2724 implemented on the mips, ppc and sparc platforms; an
2725 implementation of the same facility, but for 64-bit arithmetic,
2726 has been added for the alpha.
2727 * microoptimization: the compiler is better able to make use of the
2728 x86 LEA instruction for multiplication by constants.
2729 * bug fix: in some situations compiler did not report usage of
2730 generic arithmetic in (SPEED 3) policy.
2731 * bug 145b fix: compiler used wrong type specifier while converting
2732 MEMBER-types to numeric.
2733 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2735 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2736 index argument now works properly on the Alpha platform.
2737 * bug fix: floating point exception treatment on the Alpha platform
2739 * bug fix: FILE-POSITION works much better on string input and
2740 output streams. (thanks to Nikodemus Siivola)
2741 * bug fix: many threading/garbage collection symptoms sorted.
2742 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2743 might be pseudo-atomic.
2744 * internal change: Stopping for GC is now done with signals not
2745 ptrace. GC is now done in whichever thread wanted it, instead of
2747 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2749 * bug fix: result form in DO is not contained in the implicit
2751 * incompatible change: ICR structure is changed; the value part of
2752 CONTINUATION is now called LVAR; corresponding functions are
2753 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2754 * added type deriver for ISQRT (thanks to Robert E. Brown).
2755 * bug fix: better support for loading from the command line when an
2756 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2758 * fixed some bugs revealed by Paul Dietz' test suite:
2759 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2760 ** ROUND and FROUND now give the right answer when given very
2761 small float arguments.
2762 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2764 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2765 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2766 ** LCM should return a non-negative integer.
2767 ** PARSE-INTEGER returned the index of a terminator instead of the
2768 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2769 ** PARSE-INTEGER returned an incorrect index being applied to a
2771 ** LCM with two arguments of 0 returns 0 rather than signalling
2773 ** unsigned addition of a 32-bit constant with the high bit set no
2774 longer causes an internal compiler error on the x86.
2775 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2776 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2777 with negative last argument.
2778 ** byte specifiers with zero size and position no longer cause
2779 an error during type derivation.
2780 ** bignum multiplication on the Alpha platform now returns the
2782 * porting: The system now builds on SuSE AMD64, although it still
2783 generates a 32-bit binary.
2784 * .fasl file incompatibility: The fasl file version number has
2785 been incremented (because of the changes to internal compiler
2786 data structures referred to above).
2788 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2789 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2790 more accurately, on the Darwin kernel running on PowerPC hardware.
2791 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2792 * Compiler code deletion notes now signal a condition of type
2793 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2794 an associated MUFFLE-WARNING restart.
2795 * The compiler now performs limited argument count validation of
2796 constant format strings in FORMAT, and where appropriate in ERROR,
2797 CERROR and WARN. (thanks to Gerd Moellmann)
2798 * New ASDF-INSTALL contrib can be used for automatic download and
2799 installation of third-party Lisp code from CCLAN or other sites
2801 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2802 which forces another thread to execute a function supplied by the
2804 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2805 now accept and act upon their :ELEMENT-TYPE keyword argument.
2806 (reported by Martin Atzmueller, Edi Weitz)
2807 * bug fix: FILE-POSITION now accepts position designators up to
2808 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2809 is the greater. (thanks to Patrik Nordebo)
2810 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2811 Kalle Olavi Niemitalo)
2812 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2813 printable. (reported by Eric Marsden)
2814 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2815 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2816 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2817 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2818 (thanks to Stig Sandoe)
2819 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2820 UNREAD-CHAR now correctly includes the unread character in the
2821 target sequence. (thanks to Gerd Moellmann)
2822 * bug fix in threaded builds: the system can now be suspended and
2823 resumed by shell job control with minimal disruption.
2824 * bug fixes in times and timezones >2038AD
2825 * better handling of "where is GNU make?" problem in build scripts
2826 (thanks to Nikodemus Siivola)
2827 * new optimization: inside a named function any reference to a
2828 function with the same name is considered to be a self-reference;
2829 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2830 optimization quality.
2831 * new optimization on x86: logical functions and + now have
2832 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2833 used when the result is truncated to 32 bits.
2834 * VALUES declaration is partially enabled.
2835 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2836 * fixed some bugs revealed by Paul Dietz' test suite:
2837 ** The system now obeys the constraint imposed by
2838 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2839 types form a lattice under type intersection.
2840 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2841 ** ASSOC now ignores NIL elements in an alist.
2842 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2843 and (1+ MOST-POSITIVE-FIXNUM) answers.
2844 ** The addition of a method with invalid qualifiers to a generic
2845 function does not cause an error to be signalled immediately;
2846 a warning is signalled, and the error is generated only on
2847 calling the generic function.
2848 * changed .fasl file version number, in part to add type codes for
2849 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2850 obscure ANSI requirements
2852 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2853 * fixed bug 148: failure to inline-expand a local function left
2854 garbage, confusing the compiler.
2855 * fixed bugs 3cd: structure slot readers perform type check if the
2856 slot can have an invalid value (i.e. it is either not initialized
2857 or can be written with a less specific slot writer).
2858 * bug fix: the compiler now traps array references to elements off
2859 the end of an array; previously, the bounds checking in some
2860 circumstances could go off-by-one.
2861 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2863 * type declarations for array element types now obey the description
2864 on the CLHS page "Declaration TYPE", as per discussions on
2865 sbcl-help around 2003-05-08. This means that a declaration
2866 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2867 declaration, all references to BAR will be asserted or assumed
2868 (with THE, so dependent on compiler policy) to involve objects of
2869 type FOO. Note that no such declaration is implied in
2870 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2871 * declared types of functions from the "Conditions"
2872 chapter. (reported by Paul Dietz)
2873 * bug fix: CERROR accepts a function as its first argument.
2874 * bug fix: NTH an NTHCDR accept a bignum as index
2875 arguments. (reported by Adam Warner)
2876 * optimization: character compare routines now optimize comparing
2877 against a constant character. (reported by Gilbert Baumann)
2878 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2879 argument now works properly on the MIPS platform.
2880 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2881 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2882 declared to have a functional type, does not cause an error
2884 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2885 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2886 * fixed bug: if last continuation of a deleted block has a
2887 destination, this destination should be deleted too. (reported by
2889 * fixed a bug in the bootstrap process: the host compiler's values
2890 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2891 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2892 test case from Patrik Nordebo)
2893 * improved the ability of the disassembler on the PPC platform to
2894 provide helpful disassembly notes.
2895 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2896 the class in more cases than previously.
2897 * bug fix: FILE-POSITION now understands :START and :END for
2898 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2899 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2900 8) data. (thanks to David Lichteblau)
2901 * bug fix: it is possible to add a method to a generic function
2902 without lambda list.
2903 * bug fix: reader failed to signal END-OF-FILE inside an
2904 object representation. (reported by Nikodemus Siivola)
2905 * fixed some bugs revealed by Paul Dietz' test suite:
2906 ** LAST and [N]BUTLAST should accept a bignum.
2907 ** condition slot accessors are methods.
2908 ** (VECTOR NIL) is a subtype of STRING.
2910 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2911 * minor incompatible change: some nonsensical specialized lambda
2912 lists (used in DEFMETHOD) which were previously ignored now signal
2914 * minor incompatible change: the system is now aware of the types of
2915 variables in the COMMON-LISP package, and will signal errors for
2916 most violations of these type constraints (where previously they
2917 were silently accepted).
2918 * minor incompatible change: COMPILE-FILE now uses the freedom
2919 afforded (ANSI 3.2.2.3) to use derived function types for
2920 functions defined in the same file. This also permits the system
2921 to warn on static type mismatches and function
2922 redefinition. (Currently it does not work with high DEBUG level.)
2923 * minor incompatible change: VALUES declaration is disabled.
2924 * When issuing notes, the compiler now signals a condition of type
2925 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2926 restart for use in user handlers. It is expected that the
2927 COMPILER-NOTE condition will eventually become a condition
2928 supertype to a hierarchy of note types, which will then be
2929 handleable in a similar fashion. However, at the moment, no such
2930 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2931 but it's an implementation detail, not a classification for the
2933 * Changes in type checking closed the following bugs:
2934 ** type checking of unused values (192b, 194d, 203);
2935 ** template selection based on unsafe type assertions (192c, 236);
2936 ** type checking in branches (194bc).
2937 * A short form of VALUES type specifier has ANSI meaning (it has
2938 increased the number of situations when SBCL cannot perform type
2940 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2941 keywords or constants is permissible.
2942 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2943 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2944 classes. (thanks to Antonio Martinez)
2945 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2946 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2947 argument to a pretty-print stream. Instead, it leaves any such
2948 operations to DESCRIBE-OBJECT methods.
2949 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2951 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2952 lambda lists. (thanks to David Lichteblau)
2953 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2954 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2955 (thanks to Gerd Moellmann)
2956 * fixed bug 246: increased compilation speed of long
2957 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2959 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2961 * DEFCONSTANT now throws a condition of type
2962 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2963 constant to a non-EQL value; CONTINUE and ABORT restarts
2964 respectively change and preserve the value.
2965 * fixed bug 63: The code walker, part of the implementation of CLOS,
2966 is now better at handling symbol macros.
2967 * bug fix: There is no longer an internal implementation type named
2968 CL:LENGTH. (reported by Raymond Toy)
2969 * bug fix: In macro-like defining macros/special operators the
2970 implicit block does not enclose the lambda list.
2971 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2972 enclosed in parentheses) are not suitable as type specifiers, and
2973 their use properly signals an error now.
2974 * bug fix: An argument count mismatch for a type specifier in code
2975 being compiled no longer causes an unhandled error at compile
2976 time, but signals a compile-time warning.
2977 * fixed simple vector readable printing
2978 * bug fix: DESCRIBE takes more care over whether the class
2979 precedence list slot of a class is bound before accessing it.
2980 (reported by Markus Krummenacker)
2981 * bug fix: FORMATTER can successfully compile pretty-printer format
2982 strings which use variants of the ~* directive inside.
2983 * bug fix: SEARCH now applies its TEST predicate to the elements of
2984 the arguments in the correct order. (thanks to Wolfhard Buss)
2985 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2986 in type inference. (thanks to Robert E. Brown)
2987 * bug fix: Reading in symbols with an explicit package name of ""
2988 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2989 * fixed some bugs revealed by Paul Dietz' test suite:
2990 ** NIL is now allowed as a structure slot name.
2991 ** Arbitrary numbers, not just REALs, are allowed in certain
2992 circumstances in LOOP for-as-arithmetic clauses.
2993 ** Multiple class redefinitions before slot access no longer
2994 causes a type error.
2995 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2996 association between the name and a class.
2997 ** Generic functions with non-standard method-combination and over
2998 five methods all of which return constants no longer return NIL
2999 after the first few invocations. (thanks to Gerd Moellmann)
3000 ** CALL-NEXT-METHOD with no arguments now passes the original
3001 values of the arguments, even in the presence of assignment.
3002 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3004 ** DISASSEMBLE works with closures and funcallable instances.
3005 ** ADD-METHOD now returns the generic function, not the new method.
3006 ** FIND-METHOD signals an error if the lengths of the specializers
3007 is incompatible with the generic function, even if the ERRORP
3009 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3010 which its argument is a member.
3011 ** DEFCLASS only redefines the class named by its class-name
3012 argument if that name is the proper name of the class;
3013 otherwise, it creates a new class.
3014 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3015 of the UNBOUND-SLOT condition to the name of the slot.
3016 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3017 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3018 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3019 SLOT-MAKUNBOUND in the specified fashion.
3021 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3022 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3023 cross-compilation host. As a consequence, we can now bootstrap our
3024 way up to SBCL starting with a bare gcc toolchain and human-readable
3025 source code (first the source to CLISP, then the source to SBCL).
3026 * A contributed module containing a partial implementation of the
3027 simple-streams interface has been included. (thanks to Rudi
3029 * A contributed module implementing the RFC1321 Message Digest
3030 Algorithm, known as MD5, has been included.
3031 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3032 no longer has any effect, as the code controlled by this feature
3033 has been deleted. (As far as we know, no-one has ever built using
3034 this feature, and its semantics were confused in any case).
3035 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3036 work on conditions (as required by the ANSI specification),
3037 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3038 expected behaviour on conditions. Users should note, however,
3039 that such behaviour is not required by the ANSI specification,
3040 and so use of this behaviour may render their code unportable.
3041 * fixed some bugs revealed by Paul Dietz' test suite:
3042 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3044 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3045 ** SXHASH on condition objects no longer returns NIL.
3046 ** :ALLOCATION :CLASS slots are better treated; their values are
3047 updated on class redefinition, and initforms inherited from
3048 superclasses are applied.
3049 ** REMOVE-METHOD returns its generic function argument even when
3050 no method was removed.
3051 ** SHARED-INITIALIZE now initializes the values of the requested
3052 slots, including those with :ALLOCATION :CLASS.
3053 ** ALLOCATE-INSTANCE now works on structure classes defined via
3054 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3056 ** SLOT-EXISTS-P now works on conditions, as well as structures
3058 ** MAKE-LOAD-FORM now has the required methods on
3059 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3060 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3061 keyword, and now implements the SLOT-NAMES argument.
3062 ** methods with &OPTIONAL arguments no longer allow too many
3063 arguments to be passed in the call without error.
3064 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3065 option is consistent with the required arguments of the generic
3066 function lambda list.
3067 * bug fix: REQUIRE accepts a string designator. (Thanks to
3069 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3070 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3071 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3072 * bug fix: The compiler now checks for duplicated variables in macro
3074 * bug fix: SETQ on globals returns the correct value.
3075 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3076 not a COMPILER-ERROR (followed by some other strange error on
3077 choosing the CONTINUE restart).
3078 * bug fix: make.sh and friends are now more consistent in the way that
3079 they look for GNU "make".
3081 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3082 * experimental native threads support (on x86 Linux >=2.4 only).
3083 This is not compiled in by default: you need to add :SB-THREAD to
3084 the target features. See the "Beyond ANSI" chapter of the manual
3086 * fix for longstanding nonANSIism: The old distinction between
3087 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3088 The return value from CL:FIND-CLASS is now a CLOS class, and
3089 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3090 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3091 * An interface to the MetaObject Protocol, as described in Kiczales,
3092 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3093 MIT Press, 1991, is available from the SB-MOP package.
3094 * incompatible change: the SB-PCL package should now be considered
3095 a private implementation detail, and no longer a semi-private MOP
3097 * minor incompatible change: due to rearrangement for threads, the
3098 control stack and binding stack are now allocated at arbitrary
3099 addresses instead of being hardcoded per-port. Users affected by
3100 this probably have to be doing advanced things with shared
3101 libraries, and will know who they are.
3102 * minor incompatible change: Previously, all --eval forms used were
3103 processed with READ before any of them were processed with EVAL.
3104 Now each --eval form is processed with both READ and EVAL before
3105 the next --eval form is processed. (Thus package operations like
3106 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3107 work as the user might reasonably expect.)
3108 * minor incompatible change: *STANDARD-INPUT* is now only an
3109 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3111 * minor incompatible change: Y-OR-N-P is now character-oriented,
3112 not line oriented. Also, YES-OR-NO-P now works without errors.
3113 (thanks to Antonio Martinez)
3114 * sb-aclrepl module improvements: an integrated inspector, added
3115 repl features, and a bug fix to :trace command.
3116 * Known functions, which cannot be open coded by the backend, are
3117 considered to be able to check types of their arguments. (fixing
3118 a bug report by Nathan J. Froyd)
3119 * fixed a bug in computing method discriminating functions: It is
3120 now possible to define methods specialized on classes which have
3121 forward-referenced superclasses. (thanks to Gerd Moellmann)
3122 * fixed evaluation order in optional entries (reported by Gilbert
3124 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3125 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3126 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3127 required-by-AMOP NAME argument, as well as CLASS and
3128 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3129 * fixed bug 20: DEFMETHOD can define methods using names that are
3130 not the proper names of classes to designate class specializers.
3131 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3132 Unix file descriptors, instead of blowing up. (thanks to Antonio
3134 * Garbage collection refactoring: user-visible change is that a
3135 call to the GC function during WITHOUT-GCING will not do garbage
3136 collection until the end of the WITHOUT-GCING. If you were doing
3137 this you were probably losing anyway.
3138 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3139 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3140 TYPEP the latter but not the former.
3141 * The compiler issues a full WARNING for calls to undefined functions
3142 with names from the CL package.
3143 * MAP-INTO for a vector destination is open coded. (reported by
3144 Brian Downing on c.l.l)
3145 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3146 documentation string.
3147 * fixed some bugs revealed by Paul Dietz' test suite:
3148 ** COPY-ALIST now signals an error if its argument is a dotted
3150 ** Condition slots are now accessed more correctly in the presence
3151 of multiple initargs for a given slot.
3152 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3153 exclude restarts of the same name associated with a different
3155 ** DEFCLASS of forward-referenced classes with another
3156 forward-referenced class in the superclasses list no longer
3158 ** Condition slots are now initialized once each, not multiple
3159 times. (thanks to Gerd Moellmann)
3160 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3162 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3163 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3164 arguments contain duplicated elements.
3165 ** RESTART-CASE understands local macros.
3166 ** RESTART-CASE associates exactly its own restarts with a condition.
3167 ** ENDP in safe mode checks its argument to be of type LIST.
3168 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3169 in question is unbound.
3170 ** Optimized MAKE-INSTANCE functions no longer cause internal
3171 assertion failures in the presence of duplicate initargs.
3172 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3173 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3174 propagated even in the ctor optimized implementation of
3176 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3178 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3179 * a better implementation of SXHASH on (simple) bit vectors,
3180 measured both in execution speed and in distribution of results
3181 over the positive fixnums, has been installed. Likewise, a better
3182 implementation of EQUAL for simple bit vectors is now available.
3183 * fixed CEILING optimization for a divisor of form 2^k.
3184 * fixed bug 240 (emitting extra style warnings "using the lexical
3185 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3186 by Antonio Martinez)
3187 * fixed SXHASH, giving different results for NIL depending on type
3188 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3189 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3190 variable. (found by Rolf Wester)
3191 * SBCL does not ignore type declarations for special
3192 variables. (reported by rif on c.l.l 2003-03-05)
3193 * some bug fixes in contrib/sb-aclrepl/
3194 * fixed some bugs revealed by Paul Dietz' test suite:
3195 ** a bug in the CONS type specifier, whereby the CAR and CDR
3196 types got intertwined, has been fixed;
3197 ** the type system is now able to reason about the interaction
3198 between INTEGER and RATIO types more completely;
3199 ** APPEND, [N]REVERSE and NRECONC check that those their
3200 arguments, which must be proper lists, are really so;
3201 ** An array specialized to be unable to hold elements has been
3202 implemented, as required -- yes, really -- by ANSI;
3203 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3204 on malformed property lists;
3206 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3207 * incompatible packaging change: in line with Unix convention,
3208 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3209 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3210 * REQUIRE and PROVIDE are now optionally capable of doing something
3211 useful. See the documentation string for REQUIRE.
3212 * infrastructure for a managed SBCL contrib system: contributed
3213 modules in this release include:
3214 ** the ASDF system definition facility;
3215 ** an interface to the BSD Sockets API;
3216 ** an ACL-like convenience interface to the repl;
3217 (thanks to Kevin Rosenberg)
3218 ** an implementation of ROTATE-BYTE, with efficient implementation
3220 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3221 gives a closer approximation to the right answer than previously.
3222 (thanks to Raymond Toy)
3223 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3224 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3225 optional environment arguments, as required by ANSI.
3226 * fixed bugs in other functions taking environment objects, allowing
3227 calls with an explicit NIL environment argument to be compiled
3229 * fixed bug 228: primary return values from
3230 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3231 COMPILE or FUNCTION.
3232 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3233 :TYPE will no longer signal errors on innocuous objects.
3234 * fixed bug 231b: SETQ is better at respecting type declarations in
3235 the lexical environment.
3236 * fixed a bug in DEFCLASS: classes named by symbols with no or
3237 unprintable packages can now be defined.
3238 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3239 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3240 * fixed compiler failure related to checking types of functions.
3241 (reported by Robert E. Brown)
3242 * the compiler is now much more consistent in its error-checking
3243 treatment of bounding index arguments to sequence functions: in
3244 (SAFETY 3) code, errors will be signalled in almost all cases if
3245 invalid sequence bounding indices are passed to functions defined
3246 by ANSI to operate on sequences.
3247 * fixed a bug in the build procedure: documentation of SBCL-specific
3248 packages is now preserved and available in the final Lisp image.
3249 * lifted FDEFINITION lookup out of loops in the implementation of
3250 many list operations. (thanks to Robert E. Brown)
3251 * fixed a bug in the reader: the #n# reader macro now works for
3252 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3253 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3254 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3255 E. Brown and Tony Martinez respectively)
3256 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3257 SLOT-BOUNDP: in particular, it is now able to optimize them much
3258 better, and is now not vulnerable to having packages renamed.
3259 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3260 always called when a slot is not present in an instance. (thanks
3262 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3263 longer signal an error on unreading a character following EOF on
3264 the previous constituent stream. (thanks to Tony Martinez)
3265 * fixed some bugs revealed by Paul Dietz' test suite:
3266 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3267 not just nonnegative fixnums;
3268 ** the logical bit-array operators such as BIT-AND now accept an
3269 explicit NIL for their "opt-arg" argument (to indicate a
3270 freshly-consed result bit-array);
3271 ** ELT now signals an error on an invalid sequence index in safe
3273 ** the type system is now cleverer about negations of numeric
3274 types, and consequently understands the BIGNUM and RATIO types
3276 ** the type system is now cleverer about the interaction between
3277 INTEGER and RATIO types: while bugs still remain, many more
3278 cases are accurately computed;
3279 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3280 if it is in the last clause;
3281 ** CONSTANTLY now correctly returns a side-effect-free function in
3283 ** DECLARE is no longer treated as a special-operator; in
3284 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3285 * incremented fasl file version number due to the change in the
3286 DEFSTRUCT-SLOT-DESCRIPTION structure.
3288 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3289 * minor incompatible change: code processed by the "interpreter" or
3290 EVAL now has a compilation optimization policy of (DEBUG 2)
3291 (changed from (DEBUG 1)) to improve debuggability of interactive
3292 development, and to allow the use of the debug RETURN command in
3294 * an experimental implementation of the RETURN command for the
3295 debugger has been included. (thanks to Frederik Kuivinen)
3296 * fixed bug 62: constraints were not propagated into a loop.
3297 * fixed bug in embedded calls of SORT (reported and investigated by
3299 * fixed some bugs revealed by Paul Dietz' test suite:
3300 ** printing and reading of arrays with some dimensions having
3301 length 0 (thanks to Gerd Moellmann);
3302 ** BOA constructor with &AUX argument without a default value does
3303 not cause a type error;
3304 ** CONSTANTP now returns true for all self-evaluating objects.
3306 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3307 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3308 accessors that are related by inheritance, as specified in the
3309 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3310 Valtteri Vuorikoski)
3311 * The compiler is now able to inline functions that were defined in
3312 a complex lexical environment (e.g. inside a MACROLET).
3313 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3315 * Support for the upcoming FreeBSD-5.0 release has been included.
3316 (thanks to Dag-Erling Smorgrav)
3317 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3318 effect when it is not in a toplevel context.
3319 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3320 stand a better chance of being correct. (thanks to Gerd
3322 * fixed bug in COERCE, which now signals an error on coercing a
3323 rational to a bounded real type which excludes the expected
3325 * The compiler is now able to derive types more accurately from the
3326 COERCE and COMPILE functions.
3327 * fixed bug 223: functional binding is considered to be constant
3328 only for symbols in the CL package.
3329 * fixed bug 231: SETQ did not check the type of a variable being set
3330 (reported by Robert E. Brown)
3331 * A new optimization for MAKE-INSTANCE has been included, fixing
3332 various bugs (including relating to :ALLOCATION :CLASS slots and
3333 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3335 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3336 ** As required by ANSI, LOOP now disallows anonymous collection
3337 clauses such as COLLECT I in conjunction with aggregate boolean
3338 clauses such as THEREIS (= I 1);
3339 ** LOOP now signals an error when any variable is reused in the
3340 same loop (including the potentially useful construct analogous
3341 to WITH A = 1 WITH A = (1+ A);
3342 ** IT is only a special loop symbol within the first clause of a
3343 conditional loop clause;
3344 ** LOOP with a typed iteration variable over a hashtable now
3345 signals a type error iff it should.
3346 * fixed some other bugs revealed by Paul Dietz' test suite:
3347 ** FILE-STREAM now names the class previously known as FD-STREAM;
3348 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3349 argument) no longer signals an error;
3350 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3351 of the slot symbol, rather than using the current package
3352 ((:CONC-NAME "") continues to intern the slot's name in the
3354 * incremented fasl file version number, because of the incompatible
3355 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3356 of the new implementation of DEFINE-COMPILER-MACRO.
3358 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3359 * Support for building SBCL for MIPS platforms running in
3360 little-endian mode has now been checked in, and basic
3361 functionality on said platforms verified.
3362 * minor incompatible change: PCL now records the pathname of a file
3363 in which methods and the like are defined, rather than its
3365 * minor incompatible change: TRUENAME now considers the truename of
3366 a file naming a directory to be the pathname with :DIRECTORY
3367 component indicating that directory.
3368 * minor incompatible change: a NAMED clause in the extended form of
3369 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3370 reason for the previous behaviour is unclear.
3371 * more systematization and improvement of CLOS and MOP conformance
3372 in PCL (thanks to Gerd Moellman and Pierre Mai):
3373 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3375 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3376 primary methods with no specializers;
3377 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3379 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3380 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3381 FORWARD-REFERENCED-CLASSes; error reporting on
3382 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3384 ** SXHASH on CLOS instances now uses a slot internal to the
3385 instance to return different numbers on distinct instances,
3386 while preserving the same return value through invocations of
3388 ** DEFMETHOD signals errors when methods with longer incongruent
3389 lambda lists are added to generic functions;
3390 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3391 CLASS, as specified in AMOP;
3392 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3393 on the order returned by the primary method for classes of
3394 class STANDARD-CLASS;
3395 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3396 * fixed some bugs shown by Paul Dietz' test suite:
3397 ** DOLIST puts its body in TAGBODY;
3398 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3400 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3401 value producing form;
3402 ** if more variables are given to PROGV than values, extra
3403 variables are bound and made to have no value;
3404 ** NSUBSTITUTE on list arguments gets the right answer with
3406 ** ELT signals an error of type TYPE-ERROR when the index argument
3407 is not a valid sequence index;
3408 ** LOOP signals (at macroexpansion time) an error of type
3409 PROGRAM-ERROR when duplicate variable names are found;
3410 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3411 ** FUNCALL of special-operators now cause an error of type
3413 ** PSETQ now works as required in the presence of side-effecting
3414 symbol-macro places;
3415 ** NCONC accepts any object as its last argument;
3416 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3418 ** loop-for-as-package does not require a package to be explicitely
3420 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3422 * fixed bug 166: compiler preserves "there is a way to go"
3423 invariant when deleting code.
3424 * fixed bug 172: macro lambda lists with required arguments after
3425 &REST arguments now cause an error to be signalled. (thanks to
3427 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3428 bug. (thanks to Matthew Danish)
3429 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3431 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3432 arguments are lexically rebound. (thanks to Gerd Moellmann and
3434 * fixed bug 194: error messages are now more informative when there
3435 is no primary method applicable in a call to a generic
3436 function. (thanks to Gerd Moellmann)
3437 * fixed bug in command line argument checking (thanks to Julian
3439 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3440 (thanks to Matthew Danish)
3441 * incremented fasl file version number, because of the
3442 SXHASH-related changes in the layout of CLOS data structures
3444 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3445 * minor incompatible change: The runtime (the Unix executable named
3446 "sbcl") is now much pickier about the .core files it will load.
3447 Essentially it now requires .core files to descend from the same
3448 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3449 as the runtime does. (The intent is to prevent the crashes which
3450 can occur, and which can even be reported as mysterious failures,
3451 when people patch the sources or change the build parameters
3452 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3453 sbcl and .core files.)
3454 * fixed bug: VALUES-LIST is no longer optimized away.
3455 * fixed bug 142: The FFI conversion of C string values to Lisp
3456 string values no longer conses excessively. (thanks to Nathan
3457 Froyd porting Raymond Toy's fix to CMU CL)
3458 * began to systematize and improve MOP conformance in PCL (thanks to
3459 Nathan Froyd, Gerd Moellman and Pierre Mai):
3460 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3462 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3463 ** FINALIZE-INHERITANCE is now called on class finalization;
3464 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3465 argument precedence order.
3466 * fixed bug 202: The compiler no longer fails on functions whose
3467 derived types contradict their declared type.
3468 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3469 so it can be non-toplevel.
3470 * The fasl file version number has changed (because of the new
3471 implementation of DEFMACRO).
3472 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3473 safe code, that any length requirement by their type-specifier
3474 argument is valid. The exceptions to this are described in bug
3476 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3477 functions now check the types of their inputs as required by ANSI.
3478 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3479 introduced symbol is DECLAREd to be SPECIAL.
3480 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3481 * fixed bug: :COUNT argument to sequence functions may be negative
3482 * fixed bug: body of DO-SYMBOLS may contain declarations
3483 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3484 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3485 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3486 symbol macro only once
3487 * fixed printing of call frame when argument list is unavailable
3488 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3489 * compiler no longer signals WARNING on unknown keyword
3492 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3493 * A beta-quality port to the mips architecture running Linux,
3494 based on the old CMUCL backend, has been made. It has been tested
3495 on a big-endian kernel, and works sufficiently well to be able to
3496 rebuild itself; it has not been tested in little-endian mode.
3497 * fixed an inconsistency between gencgc.c and purify.c which made
3498 dumping/loading .core files unreliable
3499 * fixed bug 120a: The compiler now deals correctly with IFs where
3500 the consequent is the same as the alternative, instead of
3501 misderiving the return type. (thanks to Alexey Dejneka)
3502 * fixed bug 113: Logical pathnames are now dumpable (the logical
3503 host is resolved at load-time, throwing an error if it is not
3505 * fixed bug 174: FORMAT's error message is slightly clearer when a
3506 non-printing character is used in a format directive.
3507 * fixed several bugs in compiler checking of type declarations, i.e.
3508 violations of the Python "declarations are assertions" principle
3509 (thanks to Alexey Dejneka)
3510 * fixed several bugs in PCL's error checking (thanks to Gerd
3512 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3514 * fixed bug in compilation of functions as first class values
3515 (thanks to Antonio Martinez-Shotton)
3516 * The compiler's handling TYPE-ERRORs which it can prove will
3517 inevitably happen at runtime has been cleaned up and corrected
3518 in several ways. (thanks to Alexey Dejneka)
3519 * improved argument type checking for various basic arithmetic
3520 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3521 lavished on them in the past that they can be compiled in many
3522 ways in different special cases
3523 * fixed bug 181: compiler checks validity of user supplied type
3525 * cleaned up code flushing in optimization: Function calls which
3526 should signal errors for safety purposes (e.g. which ANSI says
3527 should signal errors when their arguments are of incorrect type)
3528 are no longer optimized away.
3529 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3530 * incremented fasl file version number, because changes in the
3531 implementation of sequence functions like COERCE caused
3532 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3533 in old inline expansions) to become undefined. (Actually these
3534 changes were later undone, so we might very well be binary
3535 compatible with 0.7.7 after all, but leaving the version number
3536 incremented seemed like the simplest and most conservative
3539 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3540 * An alpha-quality port to the parisc architecture running Linux,
3541 based on the old CMUCL backend, has been made. This, even more so
3542 than the other backends, should be considered still a work in
3543 progress; known problems include that the Linux kernel in 64-bit
3544 mode does not propagate the correct sigcontext structure to
3545 userspace, and consequently SBCL on a parisc64 kernel will not
3547 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3548 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3549 suppressed.) Also now that the compiler is looking at declarations
3550 in the environment, it checks optimization declarations as well,
3551 and suppresses inlining when (> DEBUG SPEED).
3552 * More fixes have been made to treatment of floating point exception
3553 treatment and other Unix signals. In particular, floating point
3554 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3555 * The detection and handling of control stack exhaustion (infinite
3556 or very deeply nested recursion) has changed. Stack exhaustion
3557 detection is now done by write-protecting pages at the OS level
3558 and applies at all optimization settings; when found, a
3559 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3560 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3561 be caught using IGNORE-ERRORS.
3562 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3563 correctly when transforming recursive LABELS functions to LETs.
3564 (thanks to Alexey Dejneka)
3565 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3566 that are names of constants or global variables.
3567 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3568 alien routines with docstrings.
3569 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3570 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3572 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3573 (thanks to Eric Marsden)
3574 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3575 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3576 * Bug fix: The SPARC backend can now compile functions involving
3577 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3578 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3579 to a functions expecting a PATHNAME-DESIGNATOR.
3580 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3581 lambda lists. (thanks to Alexey Dejneka)
3582 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3583 functions so that EXPORTing the name of the class doesn't cause
3584 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3585 to Antonio Martinez for reporting this)
3586 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3587 constant-folded without failing an assertion. (thanks to Einar
3588 Floystad Dorum for reporting this)
3589 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3590 types are now dealt with more correctly by the compiler.
3591 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3592 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3593 behaviour analogous to RENAME-FILE. This puts its behaviour more
3594 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3596 * The fasl file version number has changed again. (because of the
3597 bug fix involving the names of PCL MAKE-INSTANCE functions)
3599 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3600 * bug fix: Floating point exceptions are treated much more
3601 consistently on the x86/Linux and PPC/Linux platforms.
3602 * Array initialization with :INITIAL-ELEMENT is now much faster for
3603 cases when the compiler cannot open code the array creation, but
3604 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3605 array accesses have also seen a speed increase.
3606 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3607 specified. (This was at the root of some bad interactions between
3608 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3610 * bug fix: Internal error arguments for undefined functions are now
3611 computed correctly on the PPC/Linux platform.
3612 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3613 Raymond Toy's patch for CMU CL)
3614 * Support for the Solaris 9 operating environment has been included
3615 (thanks to Daniel Merritt)
3616 * A very ugly but hopefully complete draft of the missing FFI chapter
3617 of the manual has been created by reformatting the corresponding
3618 CMU CL manual chapter into (currently very ugly and incoherent)
3619 DocBook and bringing it up to date for SBCL behavior. Thus, the
3620 manual is now essentially complete, at least by my extreme
3621 once-and-only-once standards, whereby it's acceptable to refer to
3622 the doc strings of SB-EXT functions as the primary documentation.
3623 * The fasl file version number has changed again, due to cleanup of
3624 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3625 is no longer a static symbol.)
3627 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3628 * SBCL now builds with OpenMCL (version 0.12) as the
3629 cross-compilation host; also, more progress has been made toward
3630 bootstrapping under CLISP.
3631 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3633 * bug 158 fixed: The compiler can now deal with integer loop
3634 increments different from 1; fixing this turned out also to fix
3636 * bug 169 fixed: no more bogus warnings about using lexical bindings
3637 despite the presence of perfectly good SPECIAL declarations (thanks
3638 to David Lichteblau)
3639 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3640 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3641 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3643 * bug 180 fixed: Method combination specifications no longer ignore
3644 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3645 * bug fix: Structure type predicate functions now check their argument
3646 count as they should.
3647 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3648 correctly. (thanks to Pierre Mai)
3649 * minor incompatible change: The --noprogrammer option is deprecated
3650 in favor of the new --disable-debugger option, which is very similar.
3651 (The major difference is that it takes effect at a slightly different
3652 time at startup, causing handling of errors in --sysinit and
3653 --userinit files will be affected differently.) The
3654 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3655 been added to allow this functionality to be controlled from ordinary
3656 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3657 maintainers, who might want to run non-interactive scripts to
3658 build SBCL cores which will later be used interactively.)
3659 * minor incompatible change: The LOAD function no longer, when given
3660 a wild pathname to load, loads all files matching that pathname.
3661 Instead, an error of type FILE-ERROR is signalled.
3663 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3664 * bug 147 fixed: The compiler preserves its block link/count
3665 invariants more correctly now so that it doesn't crash. (thanks
3667 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3669 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3670 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3671 no-value-for-this-character as NIL (as specified by ANSI).
3672 * HOST-NAMESTRING on physical pathnames now returns a string that is
3673 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3674 (thanks to Christophe Rhodes)
3675 * The Alpha port handles icache flushing more correctly. (thanks to
3677 * More progress has been made toward bootstrapping under CLISP. (thanks
3678 to Christophe Rhodes)
3679 * The fasl file format has changed again, because dynamic loading
3680 on OpenBSD (which has non-ELF object files) motivated some cleanups
3681 in the way that foreign symbols are transformed and passed around.
3682 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3683 is no longer treated as whitespace by the reader, but instead as
3684 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
3685 |A
\x7fB|, instead of A as it used to.
3687 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3688 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3689 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3690 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3691 this as of 0.7.1.45, but was left out of the previous news section
3692 (thanks to Dan Barlow)
3693 * SBCL now runs on the Solaris operating system on SPARC architectures
3694 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3695 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3696 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3697 * SPARC backend cleanups, allowing builds of cores optimized for V8
3698 and V9 SPARCS, and also emission of code targeted to a particular
3699 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3701 * SBCL is closer to bootstrapping under CLISP, thanks to various
3702 fixes by Christophe Rhodes.
3703 * The fasl file format has changed again, to allow the compiler's
3704 INFO database to support symbol macros.
3705 * The user manual (in doc/) is formatted into HTML more nicely.
3706 (thanks to coreythomas)
3707 * The system is smarter about SUBTYPEP relationships, especially
3708 those involving NOT types (including types such as ATOM which are
3709 represented internally using NOT types). Thus SUBTYPEP is less
3710 likely to return (VALUES NIL NIL) in general, and in particular
3711 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3713 * The fasl file format has changed again, because the internal
3714 representation of types now includes a new slot to support the new
3715 SUBTYPEP-of-NOT-types logic.
3716 * (not a change in the main branch of SBCL, but a related prototype
3717 which can hopefully be merged into the main branch of SBCL in the
3718 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3719 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3720 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3721 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3722 dispatch macro character combinations. (thanks to Alexey Dejneka)
3723 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3724 that superficially look like logical namestrings correctly.
3725 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3727 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3728 default supplied-p) for &optional and &key arguments. (thanks to
3731 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3732 * incompatible change: The compiler is now less aggressive about
3733 tail call optimization, doing it only when (> SPACE DEBUG) or
3734 (> SPEED DEBUG). (This is an incompatible change because there are
3735 programs which relied on the old CMU-CL-style behavior to optimize
3736 away their unbounded recursion which will now die of stack overflow.)
3737 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3738 for non-GENCGC systems has been increased to 20M (since that
3739 seems much closer to the likely performance optimum for modern
3740 systems than the old 4M value was)
3741 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3742 and *DEBUG-PRINT-LEVEL*
3743 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3744 of CMU CL's support for SPARC, and various endianness and other
3745 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3746 * new syntactic sugar for the Unix command line: --load foo.bar is now
3747 an alternate notation for --eval '(load "foo.bar")'.
3749 ** The system now detects stack overflow and handles it gracefully,
3750 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3751 optimization settings. (This is a good thing in general, and
3752 its introduction in this version should be particularly timely
3753 for anyone whose code fails because of suppression of tail
3755 ** The system now hunts for the C variable "environ" in a more
3756 devious way, to avoid segfaults when the C library version differs
3757 between compile time and run time. (thanks to Christophe Rhodes)
3758 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3759 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3760 ** The compiler no longer issues bogus style warnings for undefined
3761 classes in the same source file as the DEFCLASSes which defined
3762 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3764 ** fixes in CONDITION class precedence list for undefined function
3765 errors (thanks to Alexei Dejneka)
3766 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3767 correctly. (thanks to Dan Barlow)
3768 ** portability fixes aiming at bootstrapping under CLISP (thanks
3769 to Dave McDonald and Christophe Rhodes)
3770 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3771 ** fixes in type translation and and type inference (thanks to
3773 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3774 ** various fixes in the new ports (thanks to Dan Barlow)
3775 * several changes related to debugging:
3776 ** suppression of tail recursion, as noted above
3777 ** stack overflow detection, as noted above
3778 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3779 is now the default. (For some time encapsulation has been more
3780 reliable than the breakpoint-based :ENCAPSULATE NIL
3781 implementation, at least on X86 systems; and I just noticed that
3782 encapsulation also seems closer to the spirit of the ANSI
3785 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3787 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3788 up properly again. (There was a packaging bug in 0.7.0 which
3789 left their definitions in SB-SYS::LOAD-FOREIGN and
3790 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3791 vital for most things which interface to C-level interfaces,
3792 like extensions working with sockets or databases or
3793 Perl-compatible regexes or whatever, and the need to fix
3794 this bug is the main reason that 0.7.1 was released so
3796 ** DEFGENERIC is now choosier about the methods it redefines, so that
3797 reLOADing a previously-LOADed file containing DEFGENERICs does
3798 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3799 cycle now works as it should. (thanks to Alexey Dejneka)
3800 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3801 fixed by Christophe Rhodes. (He actually submitted this patch
3802 months ago, and I delayed until after 0.7.0.)
3803 ** Bug 111 (internal compiler confusion about runtime checks on
3804 FUNCTION types) was fixed by Alexey Dejneka.
3805 * Some internal cleanups (getting rid of variables which aren't
3806 needed now that the byte interpreter is gone) caused the fasl
3807 file format number to change again.
3809 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3810 * major incompatible change: The default fasl file extension, i.e. the
3811 default extension for files produced by COMPILE-FILE, has changed
3812 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3814 ** There are many changes in the implementation of the compiler.
3815 SBCL is now essentially a compiler-only implementation of ANSI
3816 Common Lisp. EVAL still "interprets" a few special cases, but
3817 almost all the interesting cases are handled by creating
3818 a LAMBDA expression, calling COMPILE on it, then calling
3819 FUNCALL on the result.
3820 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3821 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3822 Since the code is newer, there might still be some new bugs
3823 (though not as many as before Martin Atzmueller's fixes:-). But
3824 the new code is substantially simpler and clearer, and hopefully
3825 any remaining bugs will be simpler, less fundamental, and more
3826 fixable then the bugs in the old code.
3827 ** The revised compiler is still a little unsteady on its feet.
3829 *** The debugging information it produces (particularly the names
3830 of FUNCTION objects) is sometimes much less useful than what
3831 the old compiler produced.
3832 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3833 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3834 within a MACROLET) has been temporarily weakened.
3835 ** There are new compiler optimizations for various functions:
3836 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3837 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3838 *** the math functions TRUNCATE, FLOOR, and CEILING
3839 *** the function-of-all-trades COERCE
3840 Mostly these should be transparent, but there's one
3841 potentially-annoying problem (bug 117): when the compiler
3842 inline-expands a function and does type analysis on the result,
3843 it can create control paths which have type mismatches, and
3844 when it can't prove that those control paths aren't taken,
3845 it will issue WARNINGs about the type mismatches. This is
3846 a particular problem in practice for the new sequence functions.
3847 It's not clear how this should be fixed, and for now, a
3848 workaround is given in the entry for 117 in the BUGS file.
3849 ** (Because of the interaction between the two previous items --
3850 occasional inlining problems and new inline expansions -- some
3851 of the new sequence function optimizations won't really kick in
3852 completely until debugging information, and then inlining, are
3853 straightened out in some future version.)
3854 * minor incompatible changes:
3855 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3856 DIRECTORY no longer implicitly promotes NIL slots of its
3857 pathname argument to :WILD. In particular, when you ask for the
3858 contents of a directory (which you used to be able to do without
3859 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3860 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3861 ** changes in behavior that ANSI explicitly defines to be
3862 implementation dependent:
3863 *** The new compiler-only implementation still conforms with ANSI,
3864 but acts a little different than before. Besides the obvious
3865 changes in performance tradeoffs (that the cost per form passed
3866 to EVAL has gone up, and the cost per form executed by EVAL
3867 has gone down), the behavior of the system changes a little
3868 because there are no longer any interpreted function objects.
3869 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3870 e.g. doing COMPILE on the output of interactive DEFUN is
3872 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3874 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3875 has changed from (:CL) to NIL.
3876 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3877 e.g. #\Newline and #\Tab, don't have names specified in the
3878 ANSI Common Lisp standard, is now based on their ASCII symbolic
3879 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3880 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3881 are no longer used for output.
3882 ** changes in internal implementation constants:
3883 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3884 4 million. (If your application spends a lot of time GCing and
3885 you have a lot of RAM, you might want to experiment with
3886 increasing it even more.)
3887 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3888 However, almost all old code should still continue to work without
3889 immediate update, as SB-C-CALL is now a (deprecated) nickname
3891 ** Old operator names in the style DEF-FOO are now deprecated in
3892 favor of new corresponding names DEFINE-FOO, for consistency with
3893 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3894 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3895 internal symbols, but a few supported extensions like
3896 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3897 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3898 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3899 etc. as you get deeper into recursive calls to the debugger
3900 command loop, instead of the old "5]", "5]]", "5]]]"
3901 sequence. (I was motivated to do this when squabbles between
3902 ILISP and SBCL left me very deeply nested in the debugger. In the
3903 short term, this change will probably provoke more ILISP/SBCL
3904 squabbles, but hopefully it will be an improvement in the long run.)
3905 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3906 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3907 function, since declaiming return types involving aliens is
3908 (1) annoyingly messy to do by hand and (2) vital to efficient
3909 compilation of code which calls such functions.
3910 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3911 longer reexported by the SB-EXT package. They're solely useful
3912 for alien code, so it seems more logical that you should get
3913 them from the SB-ALIEN package, not in SB-EXT.
3914 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3915 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3916 features. Instead, the code that they used to control is always
3917 built into the system.
3918 * many other bug fixes
3919 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3920 advantage of the new EVAL-WHEN stuff and to clean them up in
3921 general, and they are now more ANSI-compliant in a number of
3922 ways. Martin Atzmueller is responsible for a lot of this.
3923 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3925 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3926 *** correct ERROR type for various file operations
3927 *** some fixes for Lisp streams
3928 *** DEFMETHOD syntax checking
3929 *** changing old weird representation of debug information as
3930 strings (which, among their other deficiencies, don't transform
3931 correctly when you rename packages, and don't change their
3932 print representation when you change things like *PACKAGE*
3933 and *PRINT-LENGTH*) to symbols and lists of symbols
3934 He also made several improvements and fixed several bugs in DESCRIBE.
3935 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3937 *** misbehavior of WRITE-STRING/WRITE-LINE
3938 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3939 and several other LOOP problems as well
3940 *** DIRECTORY when similar filenames are present
3941 *** DEFGENERIC with :METHOD options
3942 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3943 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3944 *** argument ordering in FIND with :TEST option
3945 *** mishandled package designator argument in APROPOS-LIST
3946 *** various problems in the backquote readmacro
3947 *** a bug in APROPOS
3948 *** probably some others that I'm not describing very well here,
3949 since the CVS log documents them by reference to sbcl-devel
3950 messages, and the SourceForge archives aren't working well.:-(
3951 ** Dan Barlow improved the Alpha port (and is making progress on the
3952 PPC port, for those of you who think different).
3953 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3954 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3955 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3956 continues to work on the SPARC port (for those of you in a position
3957 to look down upon our little PC-compatible boxes from a great height).
3958 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3959 and uses that copy, rather than the current dynamic value, when
3960 it's trying to decide whether to truncate output. Thus e.g.
3961 (let ((*print-lines* 50))
3962 (pprint-logical-block (stream nil)
3964 (let ((*print-lines* 8))
3965 (print (aref possiblybigthings i) stream)))))
3966 should now truncate the logical block only at 50 lines, instead of
3967 often truncating it at 8 lines, as it did before.
3968 * The doc/cmucl/ directory, containing old CMU CL documentation
3969 from the time of the fork, is no longer part of the base system.
3970 SourceForge has shut down its anonymous FTP service, and with it
3971 my original plan for distributing the old CMU CL documentation
3972 there. For now, if you need these files you can download an old
3973 SBCL source release and extract them from it.
3974 * The fasl file version number changed again, for dozens of reasons,
3975 some of which are apparent above.
3977 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3978 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3979 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3980 patch, so that DISASSEMBLE output is much nicer.
3981 * The code in the SB-PROFILE package now seems reasonably stable.
3982 I still haven't decided what the final interface should look like
3983 (I'd like PROFILE to interact cleanly with TRACE, since both
3984 facilities use function encapsulation) but if you have a need
3985 for profiling now, you can probably use it successfully with
3986 the current CMU-CL-style interface.
3987 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3988 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3989 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3990 link now returns the dangling link itself, and for similar
3991 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3992 link itself. (In these cases the old code signalled an error and
3993 looped endlessly, respectively.) Thus, DIRECTORY now works even
3994 in the presence of dangling and cyclic symbolic links.
3995 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3996 is now a supported extension again, since the consensus on
3997 sbcl-devel was that it can be useful for ordinary development
3998 work, not just for debugging SBCL itself.
3999 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4000 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4001 that currently-defined functions might be redefined later with
4002 different return types.
4003 * Hash tables can be printed readably, as inspired by CMU CL code
4004 of Eric Marsden and SBCL code of Martin Atzmueller.
4005 * better error handling in CLOS method combination, thanks to
4006 Martin Atzmueller porting Pierre Mai's CMU CL patches
4007 * more overflow fixes for >16Mbyte I/O buffers
4008 * A bug in READ has been fixed, so that now a single Ctrl-D
4009 character suffices to cause end-of-file on character streams.
4010 In particular, now you only need one Ctrl-D at the command
4011 line (not two) to exit SBCL.
4012 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4014 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4015 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4016 does the right thing.
4017 * The implementation of some type tests, especially for CONDITION
4018 types, is now tidier and maybe faster, due to CMU CL code
4019 originally by Douglas Crosher, ported by Martin Atzmueller.
4020 * Some math functions have been fixed, and there are new
4021 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4022 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4023 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4024 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4025 likely to be built into sbcl-0.7.0.)
4026 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4027 CL, ported to SBCL by Martin Atzmueller)
4028 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4029 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4030 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4031 * There's a new slam.sh hack to shorten the edit/compile/debug
4032 cycle for low-level changes to SBCL itself, and a new
4033 :SB-AFTER-XC-CORE target feature to control the generation of
4034 the after-xc.core file needed by slam.sh.
4035 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4036 COMPILE-FILE is no longer supported, so that now every function
4037 gets an entry point, so that block compilation looks a little
4038 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4039 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4040 returns the number of bytes consed since the system started,
4041 rather than the number consed since the first time the function
4042 was called. (The new definition parallels ANSI functions like
4043 CL:GET-INTERNAL-RUN-TIME.)
4044 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4045 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4046 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4047 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4048 * Fasl file version numbers are now independent of the target CPU,
4049 since historically most system changes which required version
4050 number changes have affected all CPUs equally. Similarly,
4051 the byte fasl file version is now equal to the ordinary
4054 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4055 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4056 is no longer recognized. I apologize for this, because it was
4057 listed in SB-EXT as a supported extension, but I found that
4058 its existing behavior was poorly specified, as well as incorrectly
4059 specified, and it looked like too much of a mess to straighten it
4060 out. I have enough on my hands trying to get ANSI stuff to work..
4061 * many patches ported from CMU CL by Martin Atzmueller, with
4062 half a dozen bug fixes in pretty-printing and the debugger, and
4063 half a dozen others elsewhere
4064 * fixed bug 13: Floating point infinities are now supported again.
4065 They might still be a little bit flaky, but thanks to bug reports
4066 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4067 as flaky as they were.
4068 * The --noprogrammer command line option is now supported. (Its
4069 behavior is slightly different in detail from what the old man
4070 page claimed it would do, but it's still appropriate under the
4071 same circumstances that the man page talks about.)
4072 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4073 are now supported, and enabled by default. Thus, the compiler can
4074 handle many floating point and complex operations much less
4075 inefficiently. (Thus e.g. you can implement a complex FFT
4077 * The compiler now detects type mismatches between DECLAIM FTYPE
4078 and DEFUN better, and implements CHECK-TYPE more correctly, and
4079 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4080 thanks to patches from Martin Atzmueller.
4081 * various fixes to make the cross-compiler more portable to
4082 ANSI-conforming-but-different cross-compilation hosts (notably
4083 Lispworks for Windows, following bug reports from Arthur Lemmens)
4084 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4085 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4086 fixed thanks to Pierre Mai's CMU CL patches.
4087 * fixes to keep the system from overflowing internal counters when
4088 it tries to use i/o buffers larger than 16M bytes
4089 * fixed bug 45a: Various internal functions required to support
4090 complex special functions have been merged from CMU CL sources.
4091 (When I was first setting up SBCL, I misunderstood a compile-time
4092 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4093 * improved support for type intersection and union, fixing bug 12
4094 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4095 more obscure bugs as well
4096 * some steps toward byte-compiling non-performance-critical
4097 parts of the system, courtesy of patches from Martin Atzmueller
4098 * Christophe Rhodes has made some debian packages of sbcl at
4099 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4100 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4101 stable, but are nonetheless usable. When he's ready, I'd be happy
4102 to add them to the SourceForge "File Releases" section. (And if
4103 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4104 * new fasl file format version number (because of changes in
4105 internal representation of (OR ..) types to accommodate the new
4106 support for (AND ..) types, among other things)
4108 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4109 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4111 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4113 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4114 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4115 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4116 * DESCRIBE now works on structure objects again.
4117 * Most function call argument type mismatches are now handled as
4118 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4119 know whether the function will be redefined before the call is
4120 executed. (The compiler could flag local calls with full WARNINGs,
4121 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4122 it doesn't keep track of enough information to know whether calls
4123 are local in this sense.)
4124 * Compiler output is now more verbose, with messages truncated
4125 later than before. (There should be some supported way for users
4126 to override the default verbosity, but I haven't decided how to
4127 provide it yet, so this behavior is still controlled by the internal
4128 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4129 src/compiler/ir1util.lisp.)
4130 * Fasl file format version numbers have increased again, because
4131 support for the Gray streams extension changes the layout of the
4132 system's STREAM objects.
4133 * The Gray subclassable streams extension now works, thanks to a
4134 patch from Martin Atzmueller.
4135 * The full LOAD-FOREIGN extension (not just the primitive
4136 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4137 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4138 but like most other programs, it defaults to copying the Unix
4139 environment from the original process instead of starting the
4140 new process in an empty environment.
4141 * Extensions which manipulate the Unix environment now support
4142 an :ENVIRONMENT keyword option which doesn't smash case or
4143 do other bad things. The CMU-CL-style :ENV option is retained
4144 for porting convenience.
4145 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4146 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4148 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4150 * A patch from Martin Atzmueller seems to have solved the SIGINT
4151 problem, and as far as we know, signal-handling now works cleanly.
4152 (If you find any new bugs, please report them!)
4153 * The system no longer defaults Lisp source file names to types
4154 ".l", ".cl", or ".lsp", but only to ".lisp".
4155 * The compiler no longer uses special default file extensions for
4156 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4157 seems to expect a single default extension for all compiled code,
4158 and there's no compelling reason to try to stretch the standard
4159 to allow two different extensions.) Instead, byte-compiled files
4160 default to the same extension as native-compiled files.
4161 * Fasl file format version numbers have increased again, because
4162 a rearrangement of internal implementation packages made some
4163 dumped symbols in old fasl files unreadable in new cores.
4164 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4165 many fewer weird special cases.
4166 * Bug #17 (differing COMPILE-FILE behavior between logical and
4167 physical pathnames) has been fixed, and some related misbehavior too,
4168 thanks to a patch from Martin Atzmueller.
4169 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4170 by Tim Moore, ported to SBCL by Martin Atzmueller.
4171 * Martin Atzmueller fixed several filesystem-related problems,
4172 including bug #36, in part by porting CMU CL patches, which were
4173 written in part by Paul Werkowski.
4174 * More compiler warnings in src/runtime/ are gone, thanks to
4175 more patches from Martin Atzmueller.
4176 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4179 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4181 * DESCRIBE now works on CONDITION objects.
4182 * The debugger now handles errors which arise when trying to print
4183 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4185 * The build system now uses an additional file, customize-target-features.lisp,
4186 to allow local modifications to the target *FEATURES* list. (The point of
4187 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4188 debugging features enabled, without having to worry about propagating it
4189 into everyone's system when I do a "cvs update".) When no
4190 customize-target-features.lisp file exists, the target *FEATURES* list
4191 should be constructed the same way as before.
4192 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4193 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4194 warn about behavior which is undefined under the ANSI spec. Note: This
4195 is specified by ANSI, but it's not very popular with programmers.
4196 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4197 macro in the SBCL sources for an example of a workaround which you
4198 might use to make portable ANSI-standard code which does what you want.
4199 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4200 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4201 when it's used as a non-toplevel form. (This is required in order
4202 to implement the DEFCONSTANT-EQX macro.)
4203 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4204 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4205 funny things, due to bugs in the implementation of EVAL-WHEN
4206 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4207 non-toplevel DEFCONSTANTs are uncommon.)
4208 * The core file version number and fasl file version number have been
4209 incremented, because the old noncompliant DEFCONSTANT behavior involved
4210 calling functions which no longer exist, and because I also took the
4211 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4212 * fixed bug 1 (error handling before read-eval-print loop starts), and
4213 redid debugger restarts and related debugger commands somewhat while
4215 ** The QUIT debugger command is gone, since it did something
4216 rather different than the SB-EXT:QUIT command, and since it never
4217 worked properly outside the main toplevel read/eval/print loop.
4218 Invoking the new TOPLEVEL restart provides the same functionality.
4219 ** The GO debugger command is also gone, since you can just invoke
4220 the CONTINUE restart directly instead.
4221 ** The TOP debugger command is also gone, since it's redundant with the
4222 FRAME 0 command, and since it interfered with abbreviations for the
4224 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4226 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4227 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4228 some porting work by Martin Atzmueller)
4229 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4230 with a boatload of patches which he ported to SBCL. Now that those
4232 ** The system tries to make sure that its low-priority messages
4233 are prefixed by semicolons, to help people who like to use
4234 syntax highlighting in their ILISP buffer. (This patch
4235 was originally due to Raymond Toy.)
4236 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4237 patches originally written by Raymond Toy.
4238 ** The compiler understands coercion between single-value and
4239 multiple-VALUES type expressions better, getting rid of some very
4240 weird behavior, thanks to patches originally by Robert MacLachlan
4241 and Douglas Crosher.
4242 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4243 lambda lists, thanks to a patch originally by Pierre Mai.
4244 ** The system no longer bogusly warns about "abbreviated type
4246 ** The compiler gets less confused by inlining and RETURN-FROM,
4247 thanks to some patches originally by Tim Moore.
4248 ** The system no longer hangs when dumping circular lists to fasl
4249 files, thanks to a patch originally from Douglas Crosher.
4250 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4251 undefined function error.
4252 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4253 in structure slot initforms) for now, documented workaround instead:-|
4254 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4255 * fixed bug 5: added stubs for various Gray stream functions called
4256 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4257 installed, at least appropriate type errors are generated
4258 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4259 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4260 consistently in DEFMETHOD forms.
4261 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4262 it doesn't seem to affect SBCL after all
4263 * The C runtime system now builds with better optimization and many
4264 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4266 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4268 * The system is now under CVS at SourceForge (instead of the
4269 CVS repository on my home machine).
4270 * The new signal handling code has been tweaked to treat register
4271 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4272 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4273 downstream, e.g. in debug-int.lisp, has implicit dependencies
4274 on the unsignedness of integer representation of machine words,
4275 and that caused the system to bomb out with infinite regress
4276 when trying to recover from type errors involving signed values,
4277 e.g. (BUTLAST '(1 2 3) -1).)
4278 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4279 (This was one of the bugs Peter Van Eynde reported back in July.)
4280 * The system now uses code inspired by Colin Walters' O(N)
4281 implementation of MAP (from the cmucl-imp@cons.org mailing
4282 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4283 inline the MAP operation, and there is more than one
4284 sequence argument to the MAP call (so that it can't just
4285 do ETYPECASE once and for all based on the type of the
4286 single sequence argument). (The old non-inline implementation
4287 of the general M-argument sequence-of-length-N case required
4288 O(M*N*N) time when any of the sequence arguments were LISTs.)
4289 * The QUIT :UNIX-CODE keyword argument has been renamed to
4290 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4291 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4293 * Raymond Wiker's patches to port dynamic loading from Linux to
4294 FreeBSD have been added.
4295 * The BUGS file is now more nearly up to date, thanks in large part
4296 to Martin Atzmueller's review of it.
4297 * The debugger now flushes standard output streams before it begins
4298 its output ("debugger invoked" and so forth).
4299 * The core version number and fasl file version number have both
4300 been incremented, because of incompatible changes in the layout
4302 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4303 used to not be called for a saved Lisp image.)
4304 * Martin Atzmueller's version of a patch to fix a compiler crash,
4305 as posted on sbcl-devel 13 September 2000, has been installed.
4306 * Instead of installing Martin Atzmueller's patch for the
4307 compiler transform for SUBSEQ, I deleted the compiler transform,
4308 and transforms for some similar consing operations.
4309 * A bug in signal handling which kept TRACE from working on OpenBSD
4311 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4312 away by constant folding
4313 * The system now defines its address space constants in one place
4314 (in the Lisp sources), and propagates them automatically elsewhere
4315 (through GENESIS and the sbcl.h file). Therefore, patching the
4316 address map is less unnecessarily tedious and error-prone. The
4317 Lisp names of address space constants have also been systematized.
4318 * CVS tags like dollar-Header-dollar have been removed from
4319 the sources, because they have never saved me trouble and
4320 they've been source of trouble working with patches and other
4321 diff-related operations.
4322 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4323 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4325 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4327 * The system has been ported to OpenBSD.
4328 * The system now compiles with a simple "sh make.sh" on the systems
4329 that it's supported on. I.e., now you no longer need to tweak
4330 text in the target-features.lisp-expr and symlinks in src/runtime/
4331 by hand, the make.sh takes care of it for you.
4332 * The system is no longer so grossly inefficient when compiling code
4333 involving vectors implemented as general (not simple) vectors (VECTOR T),
4334 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4335 which dares to use the various sequence functions on non-simple
4336 vectors, takes less of a performance hit.
4337 * There is now a primitive type predicate VECTOR-T-P
4338 to test for the (VECTOR T) type, so that e.g.
4339 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4340 can now be compiled with some semblance of efficiency. (The old code
4341 turned the type declaration into a full call to %TYPEP at runtime!)
4342 * AREF on (VECTOR T) is still not fast, since it's still compiled
4343 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4344 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4345 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4346 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4347 without making full calls to SUBTYPEP at runtime.
4348 (Some analogous efficiency issues for non-simple vectors specialized to
4349 element types other than T, or for non-simple multidimensional arrays,
4350 have not been addressed. They could almost certainly be handled the
4351 same way if anyone is motivated to do so.)
4352 * The changes in array handling break binary compatibility, so
4353 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4354 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4355 instead of (VALUES T T).
4356 * By following the instructions that Dan Barlow posted to sbcl-devel
4357 on 2 July 2000, I was able to enable primitive dynamic object
4358 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4359 functionality is not implemented (since it calls ld to resolve
4360 library references automatically, requiring RUN-PROGRAM for its
4361 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4362 try to resolve library references) is now supported.
4363 * The system now flushes the standard output streams when it terminates,
4364 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4365 them at several other probably-convenient times, e.g. in each pass of
4366 the toplevel read-eval-print loop, and after evaluating a form given
4367 as an "--eval" command-line option. (These changes were motivated by a
4368 discussion of stream flushing issues on cmucl-imp in August 2000.)
4369 * The source transform for TYPEP of array types no longer assumes
4370 that an array whose element type is a not-yet-defined type
4371 is implemented as an array of T, but instead punts, so that the
4372 type will be interpreted at runtime.
4373 * There is now some support for cross-compiling in make.sh: each of
4374 the phases of make.sh has its own script. (This should be transparent
4375 to people doing ordinary, non-cross-compile builds.)
4376 * Since my laptop doesn't have hundreds of megabytes of memory like
4377 my desktop machine, I became more motivated to do some items on
4378 my to-do list in order to reduce the size of the system a little:
4379 ** Arrange for various needed-only-at-cold-init things to be
4380 uninterned after cold init. To support this, those things have
4381 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4382 symbols with such names are now uninterned after cold init).
4383 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4384 fasl files for cold load.
4385 ** Remove the old compiler structure pooling code (which used to
4386 be conditional on the target feature :SB-ALLOC) completely.
4387 ** Redo the representation of some data in cold init to be more compact.
4388 (I also looked into supporting byte compiled code at bootstrap time,
4389 which would probably reduce the size of the system a lot, but that
4390 looked too complicated, so I punted for now.)
4391 * The maximum signal nesting depth in the src/runtime/ support code has
4392 been reduced from 4096 to 256. (I don't know any reason for the very
4393 large old value. If the new smaller value turns out to break something,
4394 I'll probably just bump it back up.)
4395 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4397 * Many, many bugs reported by Peter Van Eynde have been added to
4398 the BUGS list; some have even been fixed.
4399 * While enabling dynamic object file loading, I tried to make the
4400 code easier to understand, renaming various functions and variables
4401 with less ambiguous names, and changing some function calling
4402 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4403 * While trying to figure out how to do the OpenBSD port, I tried to
4404 clean up some of the code in src/runtime/. In particular, I dropped
4405 support for non-POSIX signal handling, added various comments,
4406 tweaked the code to reduce the number of compilation warnings, and
4407 renamed some files to increase consistency.
4408 * To support the new automatic configuration functionality in make.sh,
4409 the source file target-features.lisp-expr has been replaced with the
4410 source file base-target-features.lisp-expr and the machine-generated
4411 file local-target-features.lisp-expr.
4412 * fixed a stupid quoting error in make.sh so that using CMU CL
4413 "lisp -batch" as cross-compilation host works again
4415 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4417 * DESCRIBE no longer tries to call itself recursively to describe
4418 bound/fbound values, so that it no longer fails on symbols which are
4419 bound to themselves (like keywords, T, and NIL).
4420 * DESCRIBE now works on generic functions.
4421 * The printer now prints less-screwed-up representations of closures
4422 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4423 * A private symbol is used instead of the :EMPTY keyword previously
4424 used to mark empty slots in hash tables. Thus
4425 (DEFVAR *HT* (MAKE-HASH-TABLE))
4426 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4427 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4428 now does what ANSI says that it should. (You can still get
4429 similar noncompliant behavior if bang on the hash table
4430 implementation with all the symbols you get back from
4431 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4432 This breaks binary compatibility, since tests for equality to
4433 :EMPTY are wired into things like the macroexpansion of
4434 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4436 * There's now a minimal placeholder implementation for CL:STEP,
4437 as required by ANSI.
4438 * An obscure bug in the interaction of the normal compiler, the byte
4439 compiler, inlining, and structure predicates has been patched
4440 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4441 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4443 * Missing ordinary arguments in a macro call are now detected even
4444 when the macro lambda list contains &KEY or &REST.
4445 * The debugger no longer complains about encountering the top of the
4446 stack when you type "FRAME 0" to explicitly instruct it to go to
4447 the top of the stack. And it now prints the frame you request even
4448 if it's the current frame (instead of saying "You are here.").
4449 * As specified by ANSI, the system now always prints keywords
4450 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4452 * The default initial SIZE of HASH-TABLEs is now smaller.
4453 * Type information from CLOS class dispatch is now propagated
4454 into DEFMETHOD bodies, so that e.g.
4455 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4457 is now basically equivalent to
4458 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4459 (DECLARE (TYPE SINGLE-FLOAT X))
4461 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4462 operation, without having to do run-time type dispatch.
4463 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4464 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4465 * Since I don't seem to be making big file reorganizations very often
4466 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4467 is overflowing my ability to conveniently back them up), I've finally
4468 checked the system into CVS. (The CVS repository is on my home system,
4469 not at SourceForge -- putting it on SourceForge might come later.)
4470 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4471 high-level GC-NOTIFY-FOO functions send their output. (There's
4472 still very little control of where low-level verbose GC functions
4473 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4474 less than it used to -- the GC-NOTIFY-FOO functions are now under
4475 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4476 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4477 in only one place in the source code, and propagates it automatically
4478 everywhere that it's needed. Thus e.g. when I bump the version from
4479 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4480 * The C source files now include boilerplate legalese and documentation
4481 at the head of each file (just as the Lisp source files already did).
4482 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4483 to his page will be replaced with a link to his new CLiki service.
4485 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4487 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4488 * The build process now looks for GNU make under the default name "gmake",
4489 instead of "make" as it used to. If GNU make is not available as "gmake"
4490 on your system, you can change this default behavior by setting the
4491 GNUMAKE environment variable.
4492 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4493 can build without error under CMU CL.
4495 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4497 * There is now a partial SBCL user manual (with some new text and some
4498 text cribbed from the CMU CL manual).
4499 * The beginnings of a profiler have been added (starting with the
4500 CMU CL profiler and simplifying and cleaning up). Eventually the
4501 main interface should be through the TRACE macro, but for now,
4502 it's still accessed through vaguely CMU-CL-style functions and macros
4503 exported from the package SB-PROFILE.
4504 * Some problems left over from porting CMU CL to the new
4505 cross-compilation bootstrap process have been cleaned up:
4506 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4507 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4508 part when getting rid of the compiler *BACKEND* stuff.)
4509 ** The value of *NULL-TYPE* was screwed up, because it was
4510 being initialized before the type system knew the final
4511 definition of the 'NULL type. This screwed up several key
4512 optimizations in the compiler, causing inefficiency in all sorts
4513 of places. (I found it because I wanted to understand why
4514 GET-INTERNAL-RUN-TIME was consing.)
4515 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4516 PROCLAIM FTYPE information. Unfortunately this broke binary
4517 compatibility again, since now the forms output by DEFGENERIC
4518 to refer to functions which didn't exist in 0.6.3.
4519 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4520 can use the new (as of 0.6.3) transform for SOME into MAP into
4522 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4523 values to (INTEGER 0 1000000), so that the time code will no longer
4524 occasionally get blown up by Linux returning 1000000 microseconds
4525 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4526 its output conform to the ANSI spec. (Alas, this makes its output
4527 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4528 * A full call to MAP NIL with a single sequence argument no longer conses.
4529 * fixes to problems pointed out by Martin Atzmueller:
4530 * The manual page no longer talks about multiprocessing as though
4531 it were currently supported.
4532 * The ILISP support patches have been removed from the distribution,
4533 because as of version 5.10.1, ILISP now supports SBCL without us
4534 having to maintain patches.
4535 * added a modified version of Raymond Toy's recent CMU CL patch for
4536 EQUALP comparison of HASH-TABLE
4538 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4540 * The system still can't cross-compile itself with
4541 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4542 entails), but at least it can compile more of itself that way
4543 than it used to be able to, and various buglets which were uncovered
4544 by trying to cross-compile itself that way have now been fixed.
4545 * This release breaks binary compatibility again. This time
4546 at least I've incremented the FASL file format version to 2, so that the
4547 problem can be detected reliably instead of just causing weird errors.
4548 * various new style warnings:
4549 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4550 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4551 ** using the lexical binding of a variable named in the *FOO* style
4552 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4553 as specified by ANSI.
4554 * *RANDOM-STATE* is no longer automatically initialized from
4555 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4556 default behavior of the system is to repeat its behavior every time
4557 it's run. If you'd like to change this behavior, you can always
4558 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4559 old convention there was no comparably easy way to get the system to
4560 repeat its behavior every time it was run.
4561 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4562 FTYPE declarations has been removed, in favor of their ANSI
4563 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4564 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4565 the types of their sequence arguments can be determined at compile time.
4566 This is done through a new open code expansion for MAP which eliminates
4567 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4568 argument types can be determined at compile time.
4569 * The optimizer now transforms COERCE into an identity operation when it
4570 can prove that the coerced object is already of the correct type. (This
4571 can be a win for machine generated code, including the output of other
4572 optimization transforms, such as the MAP transform above.)
4573 * Credit information has been moved from source file headers into CREDITS.
4574 * Source file headers have been made more standard.
4575 * The CASE macro now compiles without complaining even when it has
4578 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4580 * (Note that the way that the PCL macroexpansions were rewritten
4581 to accommodate the change in DEFGENERIC below breaks binary
4582 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4583 not run under sbcl-0.6.2. Once we get out of alpha releases,
4584 i.e. hit release 1.0.0, we'll probably try to maintain binary
4585 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4586 and sbcl-1.4.4. Until then, however, it might be fairly common
4587 for maintenance releases to break binary compatibility.)
4588 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4590 * The reporting of unhandled signals has been changed to print some
4591 explanatory text as well as the report form. (Previously only
4592 the report form was printed.)
4593 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4594 it defines, so that the compiler no longer issues undefined function
4595 warnings for compiled-but-not-yet-loaded generic functions.
4596 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4597 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4598 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4599 section of the ANSI spec are supported.
4600 * The "" nickname for the "KEYWORD" package has been removed.
4601 The reader still handles symbol tokens which begin with a package marker
4602 as keywords, but it doesn't expose its mechanism for doing so in the
4603 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4604 * The system now issues STYLE-WARNINGs for contradictory TYPE
4605 proclamations. (Warnings for contradictory FTYPE proclamations would
4606 be nice too, but those can't be done usefully unless the type system
4607 is made smarter about FUNCTION types.)
4608 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4609 systematized, so that "*target-*.lisp is supposed to exist only on the
4610 target and imply that there's a related file which exists on the
4611 host, and *host-*.lisp is supposed to exist only on the host and imply
4612 that there's a related file which exists on the target. This involves a
4613 lot of renaming. Hopefully the acute confusion caused by the renaming
4614 will be justified by the reduction in chronic confusion..
4615 ** runtime-type.lisp -> early-target-type.lisp
4616 ** target-type.lisp -> late-target-type.lisp
4617 ** early-host-format.lisp -> early-format.lisp
4618 ** late-host-format.lisp -> late-format.lisp
4619 ** host-error.lisp -> misc-error.lisp
4620 ** early-error.lisp -> early-target-error.lisp
4621 ** late-error.lisp -> late-target-error.lisp
4622 ** host-defboot.lisp -> early-defboot.lisp
4623 ** code/misc.lisp -> code/target-misc.lisp
4624 ** code/host-misc.lisp -> code/misc.lisp
4625 ** code/numbers.lisp -> code/target-numbers.lisp
4626 ** code/early-numbers.lisp -> numbers.lisp
4627 ** early-host-type.lisp -> early-type.lisp
4628 ** late-host-type.lisp -> late-type.lisp
4629 ** host-typep.lisp -> typep.lisp
4630 ** load.lisp -> target-load.lisp
4631 ** host-load.lisp -> load.lisp
4632 ** host-disassem.lisp -> disassem.lisp
4633 ** host-insts.lisp -> insts.lisp
4634 ** byte-comp.lisp -> target-byte-comp.lisp
4635 ** host-byte-comp.lisp -> byte-comp.lisp
4636 ** host-signal.lisp -> signal.lisp
4637 ** host-defstruct.lisp -> defstruct.lisp
4638 ** late-target-type.lisp -> deftypes-for-target.lisp
4639 Furthermore, several other previously target-only files foo.lisp (e.g.
4640 hash-table.lisp and random.lisp) have been split into a target-and-host
4641 foo.lisp file and a target-only target-foo.lisp file, with their key type
4642 definitions in the target-and-host part, so that the cross-compiler will
4643 know more about target types.
4644 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4645 gone away. In their place are various *BACKEND-FOO* variables
4646 corresponding to the slots of the old structure.
4647 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4648 into the target SBCL has been fixed.
4649 * The chill.lisp system for loading cold code into a running SBCL
4651 * Support for the CMU CL "scavenger hook" extension has been removed.
4652 (It was undocumented and unused in the CMU CL sources that SBCL was
4653 derived from, and stale in sbcl-0.6.1.)
4654 * Various errors in the cross-compiler type system were detected
4655 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4656 (enabling various consistency checks). Many of them were fixed,
4657 but some hard problems remain, so the compiler is back to
4658 running without *TYPE-SYSTEM-INITIALIZED* for now.
4659 * As part of the cross-compiler type system cleanup, I implemented
4660 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4661 * I have started adding UNCROSS calls throughout the type system
4662 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4663 on cross-compiler input files will be able to go away, and various
4665 * CONSTANTP now returns true for quoted forms (as explicitly required
4668 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4670 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4671 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4672 (MAKE-LIST -1). In the longer term, it ought to become true
4673 that declarations are assertions even at SAFETY 1. For now, it's not
4674 quite true even at SAFETY 3, but it's at least more nearly true..
4675 (Note that this change seems to increases the size of the system by
4676 O(5%) and to decrease the speed of the compiler by 20% or more.)
4677 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4678 for the problem of printing dozens of lines of distracting information
4679 about low-level system machinery as part of the top stack frame
4680 on entry to the debugger when an undefined function was called.
4681 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4682 is not reset to COMMON-LISP-USER.
4683 * Compilation of stuff related to dyncount.lisp has been made conditional
4684 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4685 smaller. The various dyncount-related symbols have been moved into
4686 a new "SB-DYNCOUNT" package.
4687 * tty-inspect.lisp has been renamed to inspect.lisp.
4688 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4689 feature has gone away. (When we eventually port to other flavors of
4690 libc and/or Unix, we'll try to make the differences between flavors
4691 invisible at the user level.)
4692 * Various other *FEATURES* tags, and/or their associated conditionals,
4693 have been removed if obsolescent, or given better documentation, or
4694 sometimes given more-mnemonic names.
4696 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4698 * tidied up "make.sh" script
4699 * tidied up system directory structure
4700 * better "clean.sh" behavior
4701 * added doc/FOR-CMUCL-DEVELOPERS
4702 * many many small tweaks to output format, e.g. removing possibly-confusing
4703 trailing #\. character in DESCRIBE-INSTANCE
4704 * (EQUALP #\A 'A) no longer signals an error.
4705 * new hashing code, including EQUALP hashing
4706 * tidied up Lisp initialization and toplevel
4707 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4708 * command line argument processing
4709 * added POSIX-GETENV function to deal with Unix-ish environment variables
4710 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4711 terminating SBCL on EOF
4712 * non-verbose GC by default
4713 * There is no more "sbcl" shell script; the sbcl file is now the C
4714 runtime executable (just like CMU CL).
4715 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4717 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4718 symbol and package information as Lisp native symbol and package objects
4719 instead of strings naming symbols and strings naming packages. This way,
4720 whenever packages are renamed (as in warm init), debug information is
4721 transformed along with everything else.
4722 * tweaked the optimization policy declarations which control the building
4723 of SBCL itself. Now, among other things, the system no longer saves
4724 source location debugging information. (This helps two problems at once
4725 by reducing SBCL size and by keeping SBCL from trying to look for its
4726 sources -- which may not exist -- when reporting errors.)
4727 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4728 debugging and testing purposes
4729 * cleaned up printing, making the printer call PRINT-OBJECT for
4730 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4731 methods, giving nearly-ANSI behavior
4732 * converted almost all special variables to use *FOO* naming convention
4733 * deleted PARSE-TIME functionality, since it can be done portably
4734 * moved some files out of cold init into warm init
4735 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4737 * regularized formatting of source files
4738 * added an install.sh script
4739 * fixed ridiculous memory usage of cross-compiler by making
4740 compiler/alloc.lisp not try to do pooling unless it can hook
4741 itself into the GC of the cross-compilation host. Now the system
4742 builds nicely on my old laptop.
4743 * added :SB-ALLOC in target-features.lisp-expr
4744 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4745 was not implemented)
4746 * re-did condition handling and note reporting in the compiler. Notes
4747 are no longer handled by signalling conditions. Style warnings
4748 and warnings are handled more correctly and reported in such a way
4749 that it's easy to find one or the other in your output (so that you
4750 can e.g. figure out which of many problems caused COMPILE-FILE to
4752 * changed the severity of several compiler warnings from full WARNING
4753 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4754 compiler note reporting so that it doesn't use the condition system
4755 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4756 COMPILE-FILE command)
4757 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4758 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4759 no longer supported, since their implementation was deeply intertwingled
4760 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4761 * removed bogus "support" for compiler macros named (SETF FOO), and
4762 removed the compiler macro for SETF INFO (but only after making a fool
4763 of myself on the cmucl-imp mailing list by posting a bogus patch for
4764 DEFINE-COMPILER-MACRO..)
4765 * Compiled files containing forms which have side effects on the Lisp
4766 reader (such as DEFPACKAGE forms) are now handled more correctly.
4767 (Compiler queuing of top level lambdas has been suppressed by setting
4768 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4769 * deleted various currently-unused source files, e.g. gengc.lisp. They
4770 may be added back at some point e.g. when porting to other architectures,
4771 but until they are it's distracting to distribute them and to try to
4773 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4774 there were so many of them they're just distractions, and UNCROSS is
4775 known to be able to handle the current sources
4776 * moved PROFILE functionality into TRACE, so that it will be clear
4777 how the wrapping and unwrapping of functions when you profile them
4778 interacts with the wrapping and unwrapping of functions when you
4779 trace them. (Actually, the functionality isn't there yet, but at least
4780 the interface specification is there. Hopefully, the functionality will
4781 arrive with some future maintenance release.)
4782 * removed host-oops.lisp
4783 * changed signature of QUIT function to allow UNIX-CODE argument
4784 * fixed READ-SEQUENCE bug
4785 * tweaked verbose GC output so that it looks more like the progress
4786 output that ANSI specifies for functions like LOAD
4787 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4788 * added <http://sbcl.sourceforge.com> to the banner information printed by