1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
3 * incompatible change: hash-table accessor functions are no longer
4 automatically protected by locks. Concurrent accesses on the same hash-table
5 from multiple threads can give inconsistent results or even corrupt the
6 hash-table completely. Multi-threaded applications should do their own
7 locking at the correct granularity. In the current implementation it is
8 still safe to have multiple readers access the same table, but it's not
9 guaranteed that this property will be maintained in future releases.
10 * enhancement: SB-THREAD package now exports a semaphore interface.
11 * enhancement: CONS can now stack-allocate on x86 and
12 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
14 * enhancement: nested lists can now be stack allocated on
15 platforms providing stack allocation support.
16 * enhancement: dynamic-extent support has been extended to support
17 cases where there are multiple possible sources for the stack
19 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
20 as specified by the CLHS. (thanks to Tobias Rittweiler)
22 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
23 * minor incompatible change: the MSI installer on Windows no longer
24 associates .lisp and .fasl files with the installed SBCL.
25 * minor incompatible change: :UNIX is no longer present in *FEATURES*
26 on Windows. (thanks to Luis Oliviera)
27 * new feature: SB-CLTL2 contrib module now implements
28 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
29 * optimization: scavenging weak pointers is now more efficient,
30 requiring O(1) instead of O(N) per weak pointer to identify
31 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
32 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
33 method bodies using constant slot-names when the first argument is
34 a specializer parameter for the method.
35 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
36 names, when the class of the instance is a direct instance
37 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
38 as slow as the constant slot-name case.)
39 * optimization: member type construction is now O(N) instead
41 * optimization: UNION and NUNION are now O(N+M) for large
42 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
44 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
45 now more readable in environments like Slime which display it.
46 (thanks to Tobias C. Rittweiler)
47 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
48 was able to infer the correct argument type for the object on which
49 the CAS operation was being performed.
50 * bug fix: copy propagation interfered with parallel assignment
51 semantics in local calls. (reported by Paul Khuong)
52 * bug fix: the signed modular fixnum shift compiled to wrong code on
53 x86 and x86-64. (spotted by a slight modification to some of
56 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
57 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
58 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
59 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
61 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
62 and generic function now print the object identity for anonymous
63 instances. (thanks to Attila Lendvai)
64 * enhancement: as an extension to MOP, SBCL now supports SETF of
65 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
66 (thanks to Attila Lendvai)
67 * enhancement: sb-cover has an alternate annotation mode which puts
68 the form annotations at the car of the form, instead of annotating
69 it completely. The benefit of this mode is that it shows better
70 which forms were instrumented by the compiler.
71 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
72 by printer control variables. (reported by Dan Corkill)
73 * bug fix: system leaked memory when delayed output was performed by
74 the OS in smaller chunks then expected. (thanks to David Smith)
75 * bug fix: system leaked memory when file streams were not closed
77 * bug fix: large objects written to slow streams that were modified
78 after the write could end up with the modified state written to
79 the underlying file descriptor.
80 * bug fix: multiple threads operating in parallel on the same stream
81 could cause buffer-overflows.
82 * bug fix: source location information is stored correctly
83 (broken since 1.0.6). This bug would generally show up as the
84 Slime debugger higlighting the wrong form when the sldb-show-source
86 * bug fix: Branch forms are again annotated as branches in the sb-cover
88 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
89 on x86-64. (reported by Gregory Vanuxem)
90 * bug fix: EQUALP could return wrong results for structures with raw
91 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
92 word). (reported by Vjacheslav Fyodorov)
93 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
96 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
97 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
98 atomic compare-and-swap operations on threaded platforms.
99 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
100 allows assining a global minimum value to optimization qualities
101 (overriding proclamations and declarations).
102 * enhancement: closed over variables can be stack-allocated on x86
104 * performance bug fix: GETHASH and (SETF GETHASH) are once again
106 * optimization: slot definition lookup is now O(1). This speeds up
107 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
108 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
109 * optimization: ASSOC and MEMBER can now be open-coded for all
110 combinations of keyword arguments when second argument is constant
111 and SPEED >= SPACE. In other cases a specialized version is
113 * bug fix: using obsoleted structure instances with TYPEP and
114 generic functions now signals a sensible error.
115 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
116 (reported by Kristoffer Kvello)
117 * bug fix: backtrace construction is now more careful when making
118 lisp-objects from pointers on the stack, to avoid creating bogus
119 objects that can be seen by the GC.
120 * bug fix: defaulting of values in contexts expecting more than 7
121 variables now works on x86-64. (reported by Christopher Laux)
122 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
124 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
125 as the property-list of a symbol.
126 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
127 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
128 situations requested, are once again file-compileable. (reported
131 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
132 * MOP improvement: support for user-defined subclasses of
133 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
134 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
135 the expansion of DEFMETHOD, is responsible for generating a form
136 which creates a list of specializers when evaluated. Additional
137 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
138 debugging and introspective support.
139 * minor incompatible change: the (unsupported) spinlock interface
140 has changed: free spinlock now has the value NIL, and a held spinlock
141 has the owning thread as its value.
142 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
143 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
145 * enhancement: name of a socket-stream is now "a socket" instead of
147 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
148 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
149 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
150 for generic functions. (Thanks to Tobias C. Rittweiler)
151 * optimization: bignum printing speed has been improved by 20-40%
152 (depending on the bignum size.)
153 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
155 * bug fix: the cache used by the CLOS to store precomputed effective
156 methods, slot offsets, and constant return values is now thread and
158 * bug fix: generic function dispatch function updating is now thread
159 and interrupt safe (in the sense that the known issues have been
161 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
162 * bug fix: interning EQL-specializers is now thread and interrupt safe.
163 * bug fix: asdf systems with dependencies to the SB-POSIX or
164 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
165 * bug fix: interrupt safety of applicable method computation has been
168 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
169 * new contrib: sb-cover, an experimental code coverage tool, is included
171 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
172 significantly faster.
173 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
174 produce more efficient code on x86-64 if the compiler can determine
175 that (+ INDEX <constant>) does not require a bounds check and FOO
176 has an element type at least 8 bits wide.
177 * enhancement: a new, experimental synchronous timeout facility is
178 provided. Refer to SB-SYS:WITH-DEADLINE for details.
179 * enhancement: when a symbol name conflict error arises, the
180 conflicting symbols are always printed with a package prefix.
181 (thanks to Kevin Reid)
182 * enhancement: stepping is now once again supported on the SPARC and
183 MIPS platforms. (It is also now more likely to work on CheneyGC
185 * enhancement: sb-sprof can now also track and report accurate call
187 * bug fixes: the treatment of non-standard subclasses of
188 SB-MOP:SPECIALIZER is more correct.
189 * incompatible change: PURIFY no longer copies the data from the
190 dynamic space into the static and read-only spaces on platforms
191 that use the generational garbage collector
192 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
194 * bug fix: GC race condition occasionally resulting in crashes with
195 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
197 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
199 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
200 a STYLE-WARNING to be signalled (regression from 1.0.4.)
201 * bug fix: an asynchronous interrupt could previously leave the
202 system running with GC inhibited.
203 * bug fix: a DECLARE form evaluated at top-level now causes an error
204 rather than silently (or verbosely) returning NIL.
205 * bug fix: trying to dissassemble functions compiled at high DEBUG could
206 result in a error being signalled due to source form lookup errors.
207 (reported by Peter Graves)
209 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
210 * incompatible change: removed writer methods for host-ent-name,
211 host-ent-addresses -- changing the values did not update the DNS
213 * minor incompatible change: changed experimental JOIN-THREAD interface
214 * documentation: the manual now lists reader and writer methods
215 in class slot documentation sections. (thanks to Richard M Kreuter)
216 * documentation: unwinding from asyncronous events has been
217 documented as unsafe.
218 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
219 in multithreaded application code.
220 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
221 platforms. (thanks to James Anderson for the optimization hint)
222 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
224 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
225 variants no longer cons.
226 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
227 their NOT- variants no longer cons.
228 * optimization: EQUAL hash tables no longer use SXHASH for objects
229 of all data types, but instead use an EQL hash for types for which
230 EQUAL is the same as EQL.
231 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
232 are significantly faster.
233 * optimization: new STRING-OUTPUT-STREAM implementation is much
234 faster for large outputs and conses 30% less on average.
235 * enhancement: XREF information is now collected for references made
236 to global variables using SYMBOL-VALUE and a constant argument.
237 * enhancement: SIGINT now causes a specific condition
238 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
239 * bug fix: FILE-POSITION used to signal an error in some cases where
240 ANSI requires it to return NIL.
241 * bug fix: ADJUST-ARRAY is now interrupt-safe.
242 * bug fix: adding and removing fd-handlers is now interrupt-safe.
243 * bug fix: inlined calls to C now ensure 16byte stack alignment on
245 * bug fix: bad type declaration in the CLOS implementation has
246 been fixed. (reported by James Anderson)
247 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
248 (thanks to Lutz Euler)
249 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
250 required by the CLHS. (reported by Samium Gromoff)
251 * bug fix: dead unbound variable references now signal an error.
252 (reported by Marco Monteiro)
253 * bug fix: / with an unused value was being deleted in safe code.
254 (thanks to Marco Monteiro and Kevin Reid)
255 * bug fix: number of characters that can be written onto a single
256 line in a file is unlimited.
257 * bug fix: some GC deadlocks caused by asynchronous interrupts have
258 been fixed by inhibiting interrupts for when GC is disbled.
259 * bug fix: some interrupt safety issues with GETHASH, (SETF
260 GETHASH), CLRHASH and REMHASH have been fixed.
261 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
262 specifier no longer causes infinite recursion.
263 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
264 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
265 * bug fix: an &environment argument with the correct variable information
266 is passed to macros that are expanded during byte compilation.
267 (reported by Samium Gromoff)
268 * bug fix: a logic error was causing the hash function for bignums to
269 have excessive amounts of collisions. (reported by Faré Rideau)
270 * bug fix: modifying the contents of an array could change the return
271 value of SXHASH on that array, which is only allowed for strings
272 and bit vectors. (bug introduced in 0.9.16)
273 * improvement: the x86-64/darwin port now passes all tests (except
274 for the debugger tests) but should still be considered
275 experimental until this is fixed.
276 * improvement: a style-warning is signaled for CASE (etc) clauses with
277 duplicate keys. (thanks to Kevin Reid)
278 * improvement: macos/x86 and macos/x86-64 now use mach exception
279 handlers for dealing with illegal instructions (for trapping and
280 error handling) and memory protection violations (for GC).
282 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
283 * new platform: experimental support for x86-64/darwin (MacOS).
284 * incompatible change: the thread-safe (on most platforms) getaddrinfo
285 and getnameinfo sockets functions are used instead of gethostbyaddr
286 and gethostbyname, on platforms where the newer functions are available.
287 As a result, the ALIASES field of HOST-ENT will always be NIL on these
289 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
290 don't print the startup banner, but behave as if --noinform was passed
291 as a command line argument. (thanks to Kevin Reid)
292 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
293 * optimization: code using alien values with undeclared types is much faster.
294 * optimization: the compiler is now able to open code SEARCH in more cases.
295 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
296 * bug fix: using standardized COMMON-LISP special variables as loop
297 variables no longer signals bogus package lock violations. (reported
299 * bug fix: declaring local loop variables to be of a range-limited type
300 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
301 (reported by Andras Simon)
302 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
303 bugs remain on x86-64.)
304 * bug fix: the #= and ## reader macros now interact reasonably with
305 funcallable instances.
306 * bug fix: type-checks for function arguments were compiled using the
307 compiler policy settings of the wrong lexical environment (in 1.0.2
309 * bug fix: SHADOW accepts characters as string designators, as required
310 by the spec (thanks to Eric Marsden)
311 * bug fix: fixed GC safety issues when foreign functions are called with
312 non-base strings as arguments
313 * bug fix: more consistent error output for fatal-compiler-warnings, like
315 * bug fix: functions with proper names were showing up as NIL in
316 backtraces (reported by Edi Weitz, regression in 1.0.2)
318 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
319 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
320 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
321 produce more efficient code on the x86 if the compiler can determine
322 that (+ INDEX <constant>) does not require a bounds check and FOO
323 has an element type at least 8 bits wide.
324 * bug fix: references to undefined variables are handled the same way
325 in toplevel forms as in the normal compiler
326 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
328 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
329 (thanks to Jon Buller)
330 * improvement: faster compilation times for complex functions
331 * improvement: added readlink support to SB-POSIX (thanks to Richard
334 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
335 * improvement: experimental support for mach exception handling on
336 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
338 * improvement: support for GBK external format.
339 (thanks to Chun Tian (binghe))
340 * improvement: the debugger now displays variables that have been closed
341 over, in code compiled with (DEBUG 2) or higher
342 * improvement: support for executable cores on NetBSD (thanks to
344 * new feature: added a RESTART-FRAME debugger command
345 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
346 be used to provide an implementation for FILE-POSITION on Gray streams
347 (thanks to Eric Marsden)
348 * new feature: add syslog, openlog and closelog support to SB-POSIX
349 (thanks to Richard Kreuter)
350 * optimization: the function call overhead in code compiled with
351 a high DEBUG optimization setting is significantly
352 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
353 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
354 (thanks to Tony Martinez)
355 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
356 evaluated once (reported by Kevin Reid)
357 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
358 works again (thanks to Kilian Sprotte)
359 * bug fix: an error is signaled for tagbodies with duplicate tags
360 (thanks to Stephen Wilson)
361 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
362 * bug fix: Win32 port can now handle foreign code unwinding Lisp
363 stack frames from alien callbacks.
364 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
365 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
366 65k pages (thanks to David Woodhouse)
367 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
369 changes in sbcl-1.0.1 relative to sbcl-1.0:
370 * new platform: FreeBSD/x86-64, including support for threading.
371 * new feature: the compiler stores cross-referencing information
372 abount function calls (who-calls), macroexpansion (who-macroexpands)
373 and special variables (who-binds, who-sets, who-references) for code
374 compiled with (< SPACE 3). This information is available through the
375 sb-introspect contrib.
376 * new feature: users may subclass SEQUENCE, and have instances of
377 these classes interoperate with standard Common Lisp functions if
378 a number of methods are defined. (This feature is experimental
379 and the interface subject to change based on feedback from SBCL
380 users and the general community)
381 * improvement: sb-sprof traces call stacks to an arbitrary depth on
382 x86/x86-64, rather than the previous fixed depth of 8
383 * improvement: another pthread back-end of mutex "pthread-futex".
384 * bug fix: non-ascii command-line arguments are processed correctly
385 (thanks to Yaroslav Kavenchuk)
386 * bug fix: non-required arguments were not passed correctly when a method
387 defined using DEFMETHOD was called from a mop-generated method using
388 CALL-NEXT-METHOD (reported by Pascal Costanza)
389 * bug fix: recursion is now permitted in accessors through
390 SLOT-UNBOUND. (reported by Pascal Costanza)
391 * bug fix: an error was signaled at startup if the HOME environment
392 variable was defined, but had an empty value (reported by Peter Van Eynde)
393 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
394 signal a PROGRAM-ERROR, not a BUG.
395 * bug fix: SB-POSIX:READDIR works when built with large file support.
396 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
398 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
399 for better automatic indentation support. (thanks to Matt Pillsbury)
400 * optimization: loading generic functions no longer takes O(n^2) time,
401 proportional to the amount of methods in the generic function
402 (reported by Todd Sabin and Jeremy Brown)
403 * optimization: the FIND and POSITION family of sequence functions
404 are significantly faster on arrays whose element types have been
406 * improvements to the Windows port:
407 ** Intermittent heap corruption problems have been fixed. (thanks
408 to Alastair Bridgewater)
409 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
411 ** Lisp is able to unwind foreign exception frames from alien
412 callbacks. (thanks to Alastair Bridgewater)
414 changes in sbcl-1.0 relative to sbcl-0.9.18:
415 * improvement: experimental support for threading on FreeBSD/x86.
416 (thanks to NIIMI Satoshi)
417 * improvement: runtime option --dynamic-space-size can be used
418 to set the size of the dynamic space reserved on startup.
419 * improvement: floating point modes in effect are now saved in
420 core, and restored on startup.
421 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
422 startup, not time since first call to GET-INTERNAL-REAL-TIME.
423 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
424 threads are not running after *SAVE-HOOKS* have run.
425 * improvement: writes to CLOS instance slots are type-checked in code
426 compiled with (SAFETY 3)
427 * improvement: floating-point exception handling on FreeBSD (thanks to
429 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
430 (thanks to Zach Beane)
431 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
433 * improvement: added support for the Shift-JIS external format.
434 (contributed by NIIMI Satoshi)
435 * improvement: callbacks are supported on Linux/PPC. (thanks to
437 * bug fix: compiler bug triggered by a (non-standard) VALUES
438 declaration in a LET* was fixed. (reported by Kaersten Poeck)
439 * bug fix: file compiler no longer confuses validated and already
440 dumped structurres. (reported by Kaersten Poeck)
441 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
442 fill-pointer signals a type-error as required. (thanks to
444 * bug fix: disassemly of funcallable instances works.
445 * bug fix: single stepping on PPC.
446 * bug fix: fix thread-safety problems in the type system (generally
447 manifesting as nonsensical errors like "STRING is a bad type specifier
448 for sequences" or "The value 1 is not of type FIXNUM")
449 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
450 (reported by Josip Gracin)
451 * bug fix: an error is signaled for attempts to displace arrays with
452 incompatible element types (thanks to Mario Mommer)
453 * bug fix: more correct handling of wide characters in debug info
454 (bug reported by Attila Lendvai and fixed by Juho Snellman)
455 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
456 and don't cause extra consing
457 * optimization: MAP and MAP-INTO are significantly faster on vectors
458 whose elements types have been declared.
459 * Improvements to SB-SPROF:
460 ** Support for allocation profiling
461 ** Reduced profiling overhead, especially for long profiling runs
462 * Improvements to the Windows port:
463 ** floating point exceptions are now reported correctly.
464 ** stack exhaustion detection works partially.
465 ** more accurate GET-INTERNAL-REAL-TIME.
466 ** better RUN-PROGRAM behaviour in case of errors in the child
468 ** PROBE-FILE now simplifies pathnames correctly.
469 ** DIRECTORY now works correctly with :WILD-INFERIORS.
470 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
471 1st 1970 (although time timezone data will be unreliable).
472 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
474 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
475 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
476 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
478 * bug fix: two potential GC deadlocks affecting threaded builds.
479 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
480 returns T (reported by Anton Kazennikov)
481 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
482 with non-variable places
483 * bug fix: remove a race condition in the setting of
484 funcallable-instance functions, this should make threaded CLOS
485 code more stable against memory faults.
486 * bug fix: corruption of specials when unbinding is interrupted by an
487 asynchronous unwind (reported by Hannu Koivisto)
488 * improvement: the debugger will now also display local variables that
489 are only used once, for code compiled with a DEBUG optimization quality
492 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
493 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
494 * incompatible change: External-format support for FFI calls. The
495 SB-ALIEN:C-STRING no longer implies an ASCII
496 external-format. Instead the string is subject to external-format
497 conversion. Additionally return values of type SB-ALIEN:C-STRING
498 are by default of type (SIMPLE-ARRAY CHARACTER), not
499 SIMPLE-BASE-STRING. For an alien type that behaves like the old
500 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
501 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
502 * incompatible change: SB-EXT package no longer contains the
503 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
504 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
506 * incompatible change: the single-stepper is no longer available
507 on Alpha, Mips and Sparc platforms.
508 * minor incompatible change: the direct superclasses of
509 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
510 not (STANDARD-OBJECT FUNCTION). This makes the
511 class-precedence-lists of GENERIC-FUNCTION and
512 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
514 * minor incompatible change: the default stream external format on
515 non-unicode SBCL is no longer detected from the locale, but is always
517 * new feature: Add a version of evaluator that uses an interpreter instead
518 of the compiler. EVAL still uses the compiler by default, to switch it
519 to use the interpreter, set the value of the variable
520 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
521 * minor incompatible change: the single-stepper REPL has been merged
522 with the normal debugger (see the "Stepping" heading of the debugger help
523 for more details). The debugger command STEP will no longer switch
524 to the single-stepper REPL.
525 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
526 for a type now works.
527 * bug fix: loading of default sysinit file works. (thanks to Leonid
529 * bug fix: better detection of circularities in the file-compiler.
530 (reported by Marco Monteiro)
531 * bug fix: the CL pathname functions now work with files that have
532 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
533 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
534 systems with Unix98 pty semantics.
535 * bug fix: ASDF-INSTALL will now work with bsd tar.
536 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
538 * bug fix: timers expiring in dead threads no longer cause a
539 type-error (reported by Paul "Nonny Mouse").
540 * bug fix: thanks to more lightweight single-stepper instrumentation,
541 code compiled with (DEBUG 3) will compile and execute significantly faster,
542 and will have more accurate type-inferencing than before
543 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
544 whose bindings are modified
545 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
546 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
547 ** replace dummy implementations of CL:MACHINE-INSTANCE and
548 CL:SOFTWARE-VERSION with proper version
550 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
551 * feature: implemented the READER-METHOD-CLASS and
552 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
553 as specified by AMOP.
554 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
556 * optimization: faster LOGCOUNT implementation on x86 and x86-64
557 (thanks to Lutz Euler)
558 * optimization: hashing of general arrays and vectors has been
559 improved. (reported by Any Fingerhut)
560 * enhancement: SB-INTROSPECT is now able to find definitions of
561 profiled functions. (thanks to Troels Henriksen)
562 * enhancement: compiler-macro expansion applies now to FUNCALL forms
563 as well, allowing compiler-macros for SETF-functions to expand.
564 * enhancement: step-instrumentation no longer wraps known
565 single-value functions with multiple-value context, allowing
566 better type inference.
567 * fixed bug #337: use of MAKE-METHOD in method combination now works
568 even in the presence of user-defined method classes. (reported by
569 Bruno Haible and Pascal Costanza)
570 * fixed bug #339(c): if there are applicable methods not part of any
571 long-form method-combination group, call INVALID-METHOD-ERROR.
572 (reported by Bruno Haible)
573 * fixed bug #361: the :FUNCTION initarg in the protocol for
574 initialization of methods can now be used to override
575 internally-produced optimized functions. (reported by Bruno
577 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
578 system-provided lambda expression no longer cause warnings about
579 unbound #:|pv-table| symbols.
580 * bug fix: improved the handling of type declarations and the
581 detection of violations for keyword arguments with non-constant
583 * bug fix: potentially erronous calls to PATHNAME and
584 MERGE-PATHNAMES were being flushed in some cases.
585 (reported by Richard Kreuter)
586 * bug fix: compiled calls to TYPEP were mishandling obsolete
587 instances. (reported by James Bielman and Attila Lendvai)
588 * bug fix: format strings with ~> without matching ~< no longer
589 trigger an AVER, but signal an understandable error instead.
590 (reported by Antonio Martinez)
591 * bug fix: specifying an output-file without a pathname-type for
592 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
593 of input-file instead of "fasl". (reported by Robert Dodier)
594 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
595 (reported by James Y Knight).
596 * bug fix: compiler-macros-function did not consider the environment
597 argument for shadowing by local functions.
598 * bug fix: compiler-macros expansion was inhibited by local INLINE
600 * bug fix: inline expansions of known functions were subject to
601 step-instrumentation in high debug policies, leading to problems
603 * bug fix: compiler failed to differentiate between different CONS
605 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
606 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
607 * bug fix: #368: incorrect use of expressed vs. upgraded array
609 * bug fix: #306a: more precise unions of array types.
610 * thread-safety improvements:
611 ** CONDITION-WAIT could return early on Linux, if the thread was
612 interrupted and subsequently continued with SIGCONT.
613 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
615 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
616 * added support for the ucs-2 external format. (contributed by Ivan
618 * minor incompatible change: pretty printing of objects of type
619 (cons symbol) is, in the default pprint-dispatch-table, now
620 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
622 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
623 called later in a class's lifetime, possibly as late as when the
624 first instance of the class is created. Previously,
625 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
626 class became finalizeable.
627 * fixed bug: FILE-POSITION sometimes returned inconsistent results
628 for multibyte external-format streams. (thanks to "vbzoli")
629 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
630 with :ALLOCATION :CLASS inherited from superclasses of the
632 * fixed bug: anonymous classes can now be created using the :NAME
633 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
634 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
635 * fixed bug: core-files saved with :EXECUTABLE T can again be
636 executed when SBCL_HOME isn't set. (reported by James Knight)
637 * fixed bug: toplevel LOCALLY forms with declarations could
638 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
639 * fixed bug: printing from several different threads using different
640 values of *print-case* could cause invalid output, due to
641 some internal special variables of the printer not being bound
642 thread-locally (reported by Max Mikhanosha)
643 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
644 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
645 (reported by Pascal Costanza)
646 * fixed bug: FINALIZE-INHERITANCE is called from
647 REINITIALIZE-INSTANCE on classes when the class has previously
648 been finalized, as required by AMOP.
649 * minor code generation optimizations:
650 ** better register allocation in CLOS dispatching functions
651 ** overflow detection when coercing signed bytes to fixnums on x86-64
652 ** is now implemented with one IMUL instruction instead of three shifts
653 ** more efficient bit-vector access on x86 and x86-64
654 ** more efficient access to raw structure slots on x86 and x86-64
655 * fixed some bugs revealed by Paul Dietz' test suite:
656 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
659 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
660 * feature: thread support on Solaris/x86, and experimental thread support
662 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
664 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
665 default method for SLOT-UNBOUND.
666 * minor incompatible change: prevent the user from specializing the
667 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
668 somewhat counter to the intent of the protocol, I (CSR) think, and
669 additionally it just doesn't work in SBCL as currently
670 implemented, thanks to optimizations (that are always valid for
671 the other three SLOT-VALUEish functions, but not for the setter).
672 * minor incompatible change: the :SB-LDB feature is now enabled by
673 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
674 the low-level debugger.
675 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
676 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
677 down to an SB-SYS:FD-STREAM, allowing direct communication in
678 more cases. Temporary files and pipes are still used as a fallback
680 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
681 on the non-reentrant C functions localtime(3) and gmtime(3).
682 * bug fix: global optimization policy was not visible in LOCALLY and
684 * bug fix: class objects can be used as specializers in methods.
685 (reported by Pascal Costanza)
686 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
687 with a type error. (reported by blitz_ on #lisp)
688 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
689 failed with a type error. (reported by Pascal Bourguignon)
690 * bug fix: merging pathnames against defaults with :DIRECTORY
691 starting with '(:RELATIVE :BACK) should preserve the :BACK.
692 (reported by James Y Knight)
693 * bug fix: saving large (>2GB) cores on x86-64 now works
694 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
695 constant index and a (simple-array (signed-byte 32)) array
696 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
697 error (patch by Robert J. Macomber)
698 * feature: TIME now displays the amount of run-time spent in GC
699 * bug fix: The debugger now does a better job of respecting
700 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
701 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
702 workaround for bug 403.)
703 * bug fix: floating point exception handling now works on FreeBSD
704 (thanks to NIIMI Satoshi)
705 * fixed some bugs revealed by Paul Dietz' test suite:
706 ** MISC.641: LET-conversion were not supposed to work in late
708 * improvements to the Win32/x86 port:
709 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
710 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
712 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
713 * new feature: source path information is generated for macro-expansion
714 errors for use in IDE's like Slime (thanks to Helmut Eller)
715 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
716 * bug fix: compiler does not loop forever on an invalid type in
718 * improvement: compilation of most CLOS applications is significantly
720 * optimization: added a limited bytecode compiler for simple toplevel
721 forms, speeding up compilation and FASL loading
722 * bug fix: the statistical profiler now properly distinguishes anonymous
725 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
726 * minor incompatible change: in sbcl-0.9.11 (but not earlier
727 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
728 into subclasses of the finalized class. Now user calls to
729 FINALIZE-INHERITANCE finalize just the one class, and calls by the
730 system return before any subclasses are finalized.
731 * minor incompatible change: The reader no longer ignores errors
732 regarding non-existent packages in #+ and #- feature tests.
733 * new feature: command line options --no-sysinit, --no-userinit to
734 inhibit loading the corresponding init files
735 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
736 for sending data through UDP sockets (thanks to François-René Rideau)
737 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
738 error is signalled instead (thanks to François-René Rideau)
739 * minor incompatible change: Error signalling behaviour of lexical
740 operations violating package locks has changed slightly. Refer to
741 documentation on package locks for details.
742 * enhancement: EVAL can process IF-expressions without resorting to the
744 * bug fix: Some operations involving SIN, COS, or TAN weren't being
745 constant-folded properly due to missing out-of-line functions.
746 (reported by Mika Pihlajamäki)
747 * bug fix: LISTEN sometimes returned T even in cases where no data was
748 immediately available from the stream
749 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
750 were reversed. (reported by Levente Mészáros)
751 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
752 when given a vector displaced to an adjustable array. (reported
754 * bug fix: derivation of float boundaries from numbers outside the
755 appropriate float range (reported by John Wiseman)
756 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
758 * bug fix: precomputing cache entries for generic functions with
759 some subclasses of specializers as yet invalid does not attempt to
760 fill a cache line with a negative offset. (reported by Levente
762 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
763 allow condition class objects as arguments to DOCUMENTATION and
764 (SETF DOCUMENTATION); only find and set documentation for
765 structure names for the STRUCTURE doc-type. (suggested by Gary
767 * improvements to the Win32/x86 port:
768 ** (user-homedir-pathname) and default initialization file
769 locations now know about the user's "Documents and Settings"
770 directory (thanks to Yaroslav Kavenchuk)
771 ** run-program is implemented (thanks to Mike Thomas)
772 ** sockets support (thanks to Timothy Ritchey)
773 ** better backtrace support (thanks to Alastair Bridgewater)
774 ** sb-grovel supported
775 ** asdf-install and sb-posix work somewhat
776 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
777 * improvements to the Solaris/x86 port:
778 ** works on Solaris 11/Solaris Express
779 ** floating-point exception handling support
780 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
781 * fixed some bugs revealed by Paul Dietz' test suite:
782 ** REMOVE-METHOD returns its generic function argument even when
783 the method is not one of the generic functions' methods.
784 ** objects declared as MEMBER types can be admissible arguments to
786 ** printing characters should simply be printed by the FORMAT ~:C
788 ** compiler failure when compiling functions with hairy constant
789 defaults for optional parameters.
790 ** compiler produces wrong code when MAYBE-INLINE-expanding a
791 function, which is already optimized.
793 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
794 * new platform: experimental support for SBCL x86/Darwin, including
795 MacOS X 10.4.5 on Intel.
796 * new feature: Unicode character names are now known to the system
797 (through CHAR-NAME and NAME-CHAR).
798 * new feature: the filesystem location of SBCL's core file is
799 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
800 * minor incompatible change: the contrib modules SB-POSIX and
801 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
802 this change is to make it easier to distribute
803 location-independent binaries.
804 * bug fix: as implied by AMOP, standardized classes no longer have
805 slots named by external symbols of public packages. (reported by
807 * optimization: calling functions via constant symbols -- as in
808 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
809 via the function object as in (FUNCALL #'FOO).
810 * optimization: on x86 and x86-64, the calling convention for the
811 case of dealing with an unknown number of values has been altered
812 to be friendlier to the prediction heuristics implemented,
813 particularly with reference to CALL and RET pairing. (thanks to
814 Alastair Bridgewater)
815 * optimization: on x86, the code for access to thread-local symbol
816 values and binding/unbinding of thread-local symbols is smaller.
817 (thanks to Alastair Bridgewater)
818 * enhancement: CONSTANTP is now able to determine constantness of
819 more complex forms, including calls to constant-foldable standardized
820 functions and some special forms beyond QUOTE.
821 * fixed bug: occasional GC crashes on Solaris/x86
822 * optimization: x86-64 supports stack allocation of results of simple
823 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
824 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
825 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
826 (thanks to James Knight)
827 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
828 by the standard (thanks to Stephen Compall)
830 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
831 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
832 be used for bundling the runtime and the core file into one
833 executable binary. This feature is not currently supported on all SBCL
834 platforms. (thanks to James Bielman and NIIMI Satoshi)
835 * new feature: a generational or ephemeral garbage collector is now
836 the default on the PowerPC platform (both Linux and Darwin). The
837 old Cheney (stop and copy) collector is a build-time option.
838 (thanks to Cyrus Harmon, after Raymond Toy)
839 * minor incompatible change: the method by which SBCL finds its
840 contributed modules has changed; it no longer relies on symbolic
841 links from an $SBCL_HOME/systems directory, but searches directly
842 in the subdirectories of $SBCL_HOME.
843 * enhancement: the dynamic heap size on the Linux/PPC platform is
844 markedly larger, even using the older Cheney garbage collector.
845 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
846 certain complicated string types. (reported by Gary King)
847 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
848 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
849 * fixed bug: DOCUMENTATION on structures no longer signals an
850 error if no structure type of the right name exists. (reported by
852 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
853 applicable non-standard primary or :AROUND method on
854 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
855 no longer cause unbound variable errors. (reported by Kevin Reid)
856 * fixed bug: metacircle resolution in cases where methods have slots
857 added before the slots from STANDARD-METHOD. (reported by Jean
859 * fixed bug: the Power PC assembly code for calling into lisp
860 sometimes computed its return address wrongly (depending on the
861 15th bit of the address, fixed at link time). This used to
862 manifest itself in a segmentation violation while building PCL.
863 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
864 many others over the years)
865 * fixed bug: ROOM no longer reports silly numbers for stack usage if
866 the stack pointer (treated as a signed integer) is negative.
867 (thanks to Peter van Eynde)
869 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
870 * new platform: experimental support for the Windows operating
871 system has been added. (thanks to Alastair Bridgewater)
872 * fixed several bugs in and robustified the PPC FFI (including
873 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
874 * bug fix: allow non-simple string symbol names (reported by Paul
876 * bug fix: interrupt handling on NetBSD (thanks to Richard M
878 * bug fix: saving a core corrupted callbacks on x86/x86-64
879 * bug fix: closed a loophole in metacircularity detection and
880 grounding in the PCL implementation of CLOS.
881 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
882 (reported by tomppa on #lisp)
883 * bug fix: clear the direction flag on Lisp -> C transitions, as
884 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
885 (reported by Andrej Grozin and Hendrik Maryns)
886 * optimization: major improvements to GC efficiency on GENCGC platforms
887 * optimization: faster implementation of EQUAL
888 * optimization: emit more efficient opcodes for some common
889 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
890 * optimization: several other minor code-generation improvements on x86-64
891 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
893 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
894 * minor incompatible change: (SETF CLASS-NAME) and (SETF
895 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
896 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
897 by ANSI as a generic function, and for consistency (SETF
898 GENERIC-FUNCTION-NAME) is treated likewise.
899 * fixed bug #233.b: make constraint propagation notice when a variable
900 value is changed after it is referenced but before it is used
901 * fixed bug #296: no more arbitrary behaviour from filenames with
902 odd characters as --load arguments. (reported by Adam Warner)
903 * fixed bug #390: :CHARACTER-SET pathname components now work as
904 expected. (reported by Tim Daly Jr)
905 * fixed bug #391: complicated :TYPE intersections in slot
906 definitions no longer cause an error in PCL internals.
907 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
908 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
909 returning the number of octets which would be written to the
910 file-stream. (thanks to Robert J. Macomber)
911 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
912 arguments to the internal stream functions. (thanks to David
914 * bug fix: stack exhaustion is now handled on the x86/SunOS
915 platform. (thanks to Daisuke Homma)
916 * bug fix: more accurate ROOM results on GENCGC platforms
917 * optimization: improved type inference for arithmetic-for
918 index variables in LOOP
919 * optimization: faster floating-point SQRT on x86-64
920 * fixed some bugs revealed by Paul Dietz' test suite:
921 ** DOCUMENTATION returns NIL instead of "" for method combinations
922 that don't have a docstring
924 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
925 * minor incompatible change: (SETF CLASS-NAME) and (SETF
926 GENERIC-FUNCTION-NAME) are no longer generic functions, and
927 therefore are not customizeable by user code (as seems to be at
928 least permitted and maybe required by AMOP). As a consolation,
929 however, the SBCL implementation of these functions now calls
930 REINITIALIZE-INSTANCE as specified by AMOP.
931 * bug fix: slot-definition documentation is propagated as per ANSI
932 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
933 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
934 argument, as do eslotd initialization methods. (from Pascal
935 Costanza's "Closer" project)
936 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
937 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
939 * bug fix: it is now possible to have more than one subclass of
940 STANDARD-GENERIC-FUNCTION without causing stack overflow.
941 (reported by Bruno Haible, Pascal Costanza and others)
942 * bug fix: the dependent update protocol now works for generic
943 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
945 * bug fix: condition-class instances corresponding to
946 DEFINE-CONDITION forms are now created eagerly. (reported by
947 Kalle Olavi Niemitalo on comp.lang.lisp)
948 * bug fix: floating point printing is more accurate in some
949 circumstances. (thanks to Simon Alexander)
950 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
951 merged with *DEFAULT-PATHNAME-DEFAULTS*.
952 * bug fix: callbacks on OS X now preserve stack-alignment.
953 (thanks to Cyrus Harmon)
954 * enhancement: the x86-64 disassembler is much better at
955 disassembling SSE instructions. (thanks to Lutz Euler)
956 * enhancement: CHECK-TYPE on a variable now allows type-inference
957 (thanks to Vincent Arkesteijn)
958 * optimization: improved performance of EUC-JP external format.
959 (thanks to NIIMI Satoshi)
960 * optimization: performance improvements to IO on file streams of
961 :ELEMENT-TYPE CHARACTER
962 * optimization: much faster memory allocation on x86-64
963 * optimization: faster garbage collections (latency and throughput)
965 * optimization: faster bignum subtraction and division on x86 and x86-64
966 (thanks to Lutz Euler)
967 * optimization: more accurate type-inference for loops that use a
968 floating point index variable or a negative step.
970 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
971 * bug fix: add a workaround to SBCL looping infinitely at startup on
972 Linux kernels with apparently buggy implementations of personality().
973 (thanks to Svein Ove Aas)
974 * bug fix: Unicode symbols are correctly printed in LDB backtraces
975 (thanks to David Lichteblau)
976 * bug fix: local bindings shadow global symbol macros for
977 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
978 * optimization: non-open coded uses of numeric comparison operators
979 (e.g. >) no longer cons when called with more than one parameter
980 on platforms supporting dynamic-extent allocation.
981 * enhancement: saving cores with foreign code loaded is now supported
982 on MIPS/Linux in addition to the previously supported platforms.
983 * bug fix: FIND-RESTART now tests for activity, not applicability when given
984 a restart object as identifier. (reported by Helmut Eller for CMUCL)
985 * bug fix: division by zero in sb-sprof when no samples were collected
986 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
987 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
988 (thanks to Alexander Kjeldaas)
989 * new feature: ignoring the return values of destructive functions
990 like NREVERSE signals a compile-time style-warning.
991 (thanks to Kevin Reid)
992 * new feature: the alignment of alien structure fields can be
993 explicitly specified. (thanks to Cyrus Harmon)
994 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
995 and dump core on SIGQUIT
997 ** incompatible change: threads do not inherit values of specials
998 from their parents (see manual)
999 ** bug fix: threads stacks belonging to dead threads are freed by the
1000 next exiting thread, no need to gc to collect thread stacks anymore
1001 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1002 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1003 ** bug fix: dynamic variable and thread start related gc lossage
1004 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1006 * fixed some bugs revealed by Paul Dietz' test suite:
1007 ** SUBTYPEP is slightly more accurate on heinously complicated
1008 CONS types where some of the members have uncertain (in the
1009 NIL, NIL sense) type relationships to each other.
1011 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1012 no longer purified unless :PURIFY T is explicitly specified.
1013 ** Non-purified cores are significantly smaller than before
1015 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1016 * new feature: timers based on Zach Beane's excellent timer package
1017 * added support for the following external formats: koi8-u,
1018 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1019 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1020 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1021 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1022 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1023 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1024 * incompatible change: a threaded SBCL will no longer revert to
1025 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1026 * bug fix: interrupts are disabled until startup is complete; no
1027 more sigsegvs when receiving a signal to soon
1028 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1030 * bug fix: add a workaround for the memory randomization features in
1031 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1032 workaround will only be in effect on systems with the proc filesystem
1034 * bug fix: printing objects of type HASH-TABLE signals a
1035 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1037 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1038 have been running for over 50 days. (reported by Gilbert Baumann)
1039 * bug fix: the logic for getting names of functions gets less
1040 confused when confronded with alternate-metaclass
1041 funcallable-instances. (reported by Cyrus Harmon)
1042 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1043 consistent, even on internal alternate-metaclass objects.
1044 * bug fix: flush closure information collected by physical
1045 environment analysis prepass before the main pass. (bug reported
1047 * bug fix: compiler pack phase does not modify a hashtable, which is
1048 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1049 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1050 may be expanded. (reported by Alexander <malishev> on c.l.l)
1051 * bug fix: no more style-warnings when compiling code using LAST
1052 under high-SPEED low-SPACE settings. (reported by David Wallin
1054 * fixed some incompatibilities between SBCL's MOP and the MOP
1056 ** the METAOBJECT class is now implemented;
1057 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1058 STANDARD-OBJECT, as required;
1059 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1060 now compatible (as required by VALIDATE-SUPERCLASS); there
1061 remains a consistency requirement over the presence or absence
1062 of the FUNCTION class in the superclass list of finalized
1063 classes; see the manual for more details;
1064 ** the :AROUND method for COMPUTE-SLOTS on
1065 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1066 requested slot ordering.
1068 ** bug fix: parent thread now can be gc'ed even with a live
1070 ** bug fix: binding a special with PROGV to no value is not
1071 the same as that symbol not having been bound (thanks to
1073 ** bug fix: binding specials is thread safe (thanks to
1075 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1076 and SB-SPROF do not die with 'no handler for signal XX in
1077 interrupt_handle_now(..)' anymore
1078 ** bug fix: WITH-TIMEOUT works with multiple running threads
1079 * fixed some bugs revealed by Paul Dietz' test suite:
1080 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1081 the :method-class keyword argument.
1083 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1084 * new port: the Solaris operating system on x86 processors is now
1085 mostly supported, though some rough edges in the environment
1086 remain. (thanks to Daisuke Homma)
1087 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1088 space for its heap. (thanks to Thiemo Seufer)
1089 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1090 closures. (thanks to Thiemo Seufer)
1091 * minor incompatible change: eof selects abort in the debugger.
1092 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1093 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1095 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1096 deprecated, and will go away in a future revision of SBCL.
1097 * minor incompatible change: GC-ON and GC-OFF are no longer
1098 implemented with a counter, it does not matter how many times gc
1099 is switched on or off
1100 * bug fix: discriminating functions for generic function classes
1101 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1102 make invalid assumptions about method precedence order. (reported
1104 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1105 platforms. (thanks to Thiemo Seufer)
1106 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1107 * bug fix: correct pathname printing with printer escaping is on.
1108 (thanks to Kevin Reid)
1109 * bug fix: complex VOP definitions in "user-space" no longer trigger
1110 package locks. (reported by Zach Beane)
1111 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1112 for funcallable-instance functions, and is no different from
1114 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1115 characters in the current readtable. (reported by Nicholas Neuss)
1116 * bug fix: SUBTYPEP on various CONS types returns more a more
1117 accurate acknowledgment of its certainty.
1118 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1119 lists in some cases. This partially fixes bug 384.
1120 * flush all standard streams before prompting in the REPL and the
1122 * bug fix: signal handling and triggering gc do not conflict
1123 directly anymore, in particular a high frequency sb-sprof does
1124 not prevent gc from running
1125 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1126 approximation for timezone and DST information between the
1127 universal time epoch and the smallest negative 32-bit time_t.
1128 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1129 year 1899 so long as the encoded time is non-negative.
1130 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1131 the correct answer for non-constant rotate amounts when performing
1132 an inline 32-bit rotation.
1134 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1135 there is only one thread in the session
1136 ** bug fix: memory leak for streams created in one thread and
1137 written to in another
1138 ** bug fix: lockup when compiled with gcc4
1139 ** bug fix: race that allows the gc to be triggered when gc is
1141 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1142 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1144 ** bug fix: finished threads are gc'ed properly
1145 * fixed some bugs revealed by Paul Dietz' test suite:
1146 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1147 has arguments with a different set of applicable methods from
1148 the orignal arguments.
1149 ** The type error thrown by MAP now has a correct expected-type
1151 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1152 name a compiled function.
1153 ** Three MISC tests where a large bignum was improperly coerced to
1154 a float that couldn't represent that bignum during type
1155 derivation were fixed.
1156 ** SUBTYPEP can now handle types involving the negation of a
1157 list-form FUNCTION type.
1158 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1159 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1160 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1162 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1163 * New feature: Experimental support for bivalent streams: streams
1164 opened with :element-type :default now allow character and binary
1165 (unsigned-byte 8) I/O
1166 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1167 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1169 * bug fix: no more highly sporadic "couldn't check whether ~S is
1170 readable" when reading a stream and an interrupt hits in the middle
1171 of a select system call
1172 * compiler better recognizes complex arrays (reported by Eduardo
1174 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1175 for variables on SBCL built with linkage-tables. (reported by Luis
1177 * various error reporting improvements.
1178 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1179 (Thanks to Thiemo Seufer)
1180 * bug fix: nested reader invokations work correctly
1181 * bug fix: it is possible to have simultaneous references to foreign
1182 code and foreign data with the same name.
1184 ** added x86-64 support
1185 ** incompatible change: the threading api now works with thread
1186 objects instead of thread ids
1187 ** bug fix: threads are protected from signals and interruption when
1188 starting up or going down
1189 ** bug fix: a race where an exiting thread could lose its stack to gc
1190 ** bug fix: don't halt on infinite error in threads if possible
1191 ** fixed numerous gc deadlocks introduced in the pthread merge
1192 ** bug fix: fixed thread safety issues in read and print
1193 ** bug fix: debugger doesn't hang on session lock if interrupted at
1194 an inappropriate moment
1195 ** bug fix: run-program is now thread safe(r)
1196 ** bug fix: inner with-recursive-lock no longer releases the mutex
1197 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1198 * fixed some bugs revealed by Paul Dietz' test suite:
1199 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1200 EXPECTED-TYPE slots filled.
1201 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1203 ** MAKE-CONDITION accepts classes as type-designators.
1204 ** COMPILE may never return NIL.
1205 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1206 range before calling Unix time functions
1208 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1209 * numerous signal handling fixes to increase stability
1210 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1211 * minor incompatible change: we now correctly canonize default
1212 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1213 as per the MOP, rather than the historical (INITARG INITFUNCTION
1214 INITFORM). (reported by Bruno Haible)
1215 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1216 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1217 for more information.
1218 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1219 pathname is a directory pathname.
1220 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1221 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1223 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1224 :METACLASS argument in addition to a class name. (reported by
1225 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1226 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1227 (reported by Bruno Haible; patch from Gerd Moellmann)
1228 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1230 * bug fix: more cleanups to the floating point exception handling on
1231 x86-64 (thanks to James Knight)
1232 * bug fix: the compiler does not try to constant fold calls of
1233 COERCE and BIT-* functions when they return freshly constructed
1234 objects. (reported by Nikodemus Siivola and Paul Dietz)
1235 * optimization: improved the MIPS versions of generic (in the
1236 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1237 * optimization: direct conversion of (unsigned-byte 32) to floats on
1238 the PowerPC platform.
1239 * optimization: structure instances with raw slots now use less
1240 memory, and probably show better memory locality. (thanks to
1242 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1243 are treated as requests for stack allocation on the x86-64,
1244 Alpha-32, PPC and SPARC platforms.
1245 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1246 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1247 (thanks to Tony Martinez)
1249 ** gcing a dead thread can no longer lead to lockups
1250 ** threads block signals until they are set up properly
1251 ** errno is no longer shared by threads
1252 ** interrupt-thread restores the eflags register on x86
1253 ** fixed some lockups due to gc/thread interaction
1254 * fixed some bugs revealed by Paul Dietz' test suite:
1255 ** invalid dotted lists no longer raise a read error when
1256 *READ-SUPPRESS* is T
1257 ** signal an error if a symbol that names a declaration is used
1258 as the name of a type, or vice versa
1259 ** allow using the (declare (typespec var*)) abbreviation for
1260 (declare (type typespec var*)) with all type specifiers
1261 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1262 ** always return NIL from PPRINT-POP when OBJECT is NIL
1263 ** don't signal errors when pretty-printing malformed LABELS,
1264 FLET or MACROLET forms
1265 ** declarations in a DOLIST body are also in scope for the
1267 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1269 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1272 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1273 * fixed cross-compiler leakages that prevented building a 32-bit
1274 target with a 64-bit host compiler.
1275 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1276 opened with :IF-EXISTS :OVERWRITE.
1277 * fixed bug 281: error for an invalid qualifier in a short-form method
1278 combination method is not signalled until the faulty method is called.
1279 * bug fix: iteration variable type inferrer failed to deal with open
1280 intervals. (reported by Alan Shields)
1281 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1282 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1283 or more runtime options were provided to the sbcl binary.
1284 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1285 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1286 * optimization: there's now a fast-path for fixnum arguments in the
1287 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1288 * optimization: the code generated on x86-64 is more compact thanks
1289 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1290 * bug fix: floating-point exception handling now partly works on
1291 x86-64. (Thanks to James Knight)
1292 * improvement to the MIPS backend from Thiemo Seufer: C-style
1293 64-bit long long arguments and return values to alien functions
1295 * fixed some bugs revealed by Paul Dietz' test suite:
1296 ** the type-error signalled from WARN has a filled-in DATUM slot.
1297 ** the type-error required when a stream is not associated with
1298 a file has the stream as its datum.
1299 ** type-errors on single-floats on x86-64 no longer have
1300 :INVALID-OBJECT as the datum
1301 ** the type-errors signalled for invalid function names now have
1302 a correct expected type
1303 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1304 for structures defined with a :TYPE. Documentation strings for
1305 typed structures are no longer immediately discarded
1306 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1307 broadcast streams and synonym streams. FILE-LENGTH now also works
1308 on broadcast streams.
1310 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1311 * incompatible change: the --noprogrammer option, deprecated since
1312 version 0.7.5, has been removed. Please use the equivalent
1313 --disable-debugger option instead.
1314 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1316 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1317 inoperational for a while now) has been completely removed.
1318 * null lexical environments are now printed as #<NULL-LEXENV>,
1319 significantly reducing the amount of clutter in typical backtraces.
1320 * documentation on weak pointers, finalization, and after GC hooks
1321 has been added to the manual.
1322 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1323 as other specialized array types, is much faster. SUBSEQ and
1324 COPY-SEQ on such arrays have also been sped up.
1325 * optimization: EQL is now more efficient when at least other argument
1326 is known to be of type (OR FIXNUM (NOT NUMBER)).
1327 * fixed bug: the runtime is now less vulnerable to changes in the
1328 size of the SBCL object on OS X, and virtual memory is reserved for
1329 all spaces that need to be at a fixed address.
1330 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1331 * fixed bug: finalizers and after GC hooks that cause consing are now
1333 * fixed bug: compiler error messages and summaries are now printed to
1334 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1335 * fixed inference of the upper bound of an iteration variable.
1336 (reported by Rajat Datta).
1337 * fixed bug 211e: calling local functions with duplicated constant
1338 keyword argument no longer causes a bogus style warning about an
1340 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1341 ftype declaration to be disregarded. (reported by Dave Roberts)
1342 * fixed bug 373: caused by erronous compilation of references to alien
1343 variables in the runtime on ppc/darwin.
1344 * fixed bug 376: CONJUGATE type deriver.
1345 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1346 (reported by Baughn on #lisp)
1347 * a cross-compiler bug on non-x86 platforms has been identified and
1348 fixed. (thanks to Bruno Haible)
1349 * improvements to the MIPS runtime code for increased stability.
1350 (thanks to Thiemo Seufer)
1351 * increased the maximimum compact environment size to allow
1352 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1353 * partial workaround for bug 135: don't name the function we're
1354 calling for hairy cases of EVAL, so as not to accumulate one environment
1355 entry per call to EVAL. (reported by Kevin Reid)
1356 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1357 * optimization: type testing for non-vector arrays should be faster.
1358 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1360 * bug fix: setting 31st element of a bit vector to zero did not work
1362 * bug fix: redefining a class definition which failed due to a
1363 previous accessor / function clash now works (but see BUGS entry
1364 #380 for more problems in this area). (thanks to Zach Beane)
1365 * the long form of DEFINE-METHOD-COMBINATION disables method group
1366 checking when given a single method group with pattern *. (thanks
1368 * on x86 compiler supports stack allocation of results of simple
1369 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1370 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1371 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1372 * fixed some bugs related to Unicode integration:
1373 ** the restarts for recovering from input and output encoding
1374 errors only appear when there is in fact such an error to
1376 * fixed some bugs revealed by Paul Dietz' test suite:
1377 ** MISC.549 and similar: late transformation of unsafe type
1378 assertions into derived types caused unexpected code
1380 ** SCALE-FLOAT type deriver is less wrong.
1381 ** type derivers for EXP, LOG and similar functions compute result
1382 types for complex arguments better.
1383 ** (MISC.563) CONJUGATE type deriver works for very restricted
1385 ** out-of-line type testers for character strings are available.
1386 ** EQUAL compiler transform understands specialness of objects
1388 ** accessing double-floats stored on the stack now works on x86-64.
1389 ** debugger internals could sometimes create invalid lispobjs,
1390 resulting in GC crashes.
1391 ** MISC.548: type check weakening can convert required type into
1393 ** initialization forms for bindings are not in scope of free special
1396 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1397 * incompatible change: thread support for non-NPTL systems has
1398 been removed - locking is buggy and unreliable. A threaded
1399 SBCL build will now warn at startup and refuse to create
1400 new threads, unless futex support is detected in the kernel
1401 * incompatible change: the top level REPL now has only an ABORT
1402 restart associated with it, not TOPLEVEL and ABORT as it used to.
1403 TOP and TOPLEVEL are now available as debugger commands for
1404 returning to the top level.
1405 * incompatible change: forms evaluated in the REPL now use the
1406 global optimization policy.
1407 * incompatible change: user- and system-initialization files are
1408 no longer processed with LOAD, but by READ and EVAL; hence the
1409 global optimization policy, startup package, readtable, etc,
1411 * The .fasl file format number has been incremented because of
1412 various incompatible changes.
1413 * internal entry point details and argument counts no longer appear
1414 in backtraces unless explicitly requested by setting
1415 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1416 * built-in and standard functions no longer have names like "top
1417 level local call to FOO".
1418 * fixed bug 32: functions defined in non-null lexical environments
1419 now have more legible printed representation
1420 * fixed bug 33: functions defined in non-null lexical environemnts
1421 are now more amenable to inspection by INSPECT.
1422 * workaround for bug 354: XEPs no longer appear in backtraces unless
1423 explicitly requested.
1424 * fixed bug: receiving the signal which results from attempting to
1425 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1426 SIGBUS on other *BSDs) on architectures where the C stack is also
1427 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1428 to debugger confusion or wild instability. (reported by Cheuksan
1430 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1431 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1432 (reported by Lutz Euler)
1433 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1434 compiled code. (reported by Paul Dietz)
1435 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1436 specialized parameter to a method to something that is not TYPEP
1437 the specializer is now possible.
1438 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1439 face of package deletion.
1440 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1441 pathname. (reported by David Tolpin on c.l.l)
1442 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1443 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1444 STRING-STREAM and FILE-STREAM, respectively.
1445 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1446 than previously; in addition, its test suite is now run on build.
1447 (thanks to Luke Gorrie)
1448 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1449 * optimization: added a immediate representation for single-floats
1451 * fixed some bugs revealed by Paul Dietz' test suite:
1452 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1453 ** attempting to create a package with a colliding nickname causes
1454 correctable errors to be signalled.
1455 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1456 ** several x86-64 backend bugs related to sign-extension of immediate
1459 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1460 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1461 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1463 * fixed loading of multiply forward-referenced layouts.
1464 (thanks to Cheuksan Wang)
1465 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1466 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1467 (see COMPILE-FILE documentation for details of :PRINT option)
1468 * fixed bugs 19 and 317: fixed-format floating point printing is
1469 more accurate. This also fixes a bug reported by Adam Warner
1470 related to the ~@F format directive.
1471 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1473 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1474 dispatch table if the from-char is a dispatch macro character.
1475 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1476 by the wordsize no longer ignore the last word. (reported by Lutz
1478 * fixed bug in type checking of dynamic-extent variables. (reported
1480 * optimization: sequence traversal functions use their freedom to
1481 coerce function designators to functions.
1482 * optimization: code with many calls to CLOS methods specialized on
1483 CLOS classes has had redundant type checks removed.
1484 * optimization: added declarations to speed up operations that access
1485 the internal character database (for example STRING-UPCASE)
1486 * optimization: comparison operations between floats and sufficiently small
1487 fixnums no longer create extra rationals
1488 * fixed some bugs related to Unicode integration:
1489 ** portions of multibyte characters at the end of buffers for
1490 character-based file input are correctly transferred to the
1491 start of the buffer at the next read.
1492 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1493 passing it through to OPEN.
1494 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1495 argument given to internal calls to OPEN.
1496 ** the built-in comment readers (introduced by character sequences
1497 ";" and "#|") are more forgiving to encoding errors; they will
1498 STYLE-WARN and then attempt to resync the stream at a character
1499 boundary. (thanks to Teemu Kalvas)
1500 * fixed some bugs in the x86-64 port:
1501 ** Negative short int return values from c-calls are sign-extended
1503 ** The stack is aligned to 16-bytes for c-calls, as required by
1504 the ABI. (thanks to Cheuksan Wang)
1505 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1506 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1507 for enums. (thanks to Vincent Arkesteijn)
1508 ** Multiple small optimizations and bugfixes for floating point
1510 * fixed some bugs revealed by Paul Dietz' test suite:
1511 ** Space, Tab, Linefeed, Return and Page have the invalid
1512 secondary constituent character trait.
1513 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1515 ** WITH-INPUT-FROM-STRING should only update the index place on
1517 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1518 works more reliably.
1519 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1520 with one-dimensional arrays with fill pointers.
1521 ** TYPE-OF failed on a complex with an integer realpart and a
1523 ** compiler failure during type inference for the code of form
1524 (IF (EQL X (THE ...)) ...) (MISC.535).
1526 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1527 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1528 platform. The port supports 61-bit fixnums, large memory spaces
1529 and reloading shared object files.
1530 * enhancement: saving cores with foreign code loaded is now
1531 supported on ppc/Darwin in addition to the previously supported
1533 * enhancement: the statistical profiler now walks deeper into the
1534 call stack for more meaningful call-graphs and accrued time
1535 reports (x86/x86-64 only). It also now reports time spent in
1537 * enhancement: it is now possible to trace most individual methods
1538 of a generic function in addition to tracing the generic function
1540 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1542 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1543 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1544 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1545 produces an error. (thanks to Vincent Arkesteijn)
1546 * bug fix: NAMESTRING on pathnames with :WILD components in their
1547 directories works correctly. (thanks to Artem V. Andreev)
1548 * fixed bug 125: compiler preserves identity of closures. (reported
1550 * bug fixed: functions with &REST arguments sometimes failed with
1551 "Undefined function" when compiled with (DEBUG 3). (reported by
1553 * bug fix: overflow during compiling of setting element of a bit
1554 vector with constant index and value. (reported by Timmy Douglas)
1555 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1556 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1557 * on x86 compiler partially supports stack allocation of dynamic-extent
1559 * GO and RETURN-FROM do not check the extent of their exit points
1560 when compiled with SAFETY 0.
1561 * fixed some bugs related to Unicode integration:
1562 ** encoding and decoding errors are now much more robustly
1563 handled; it should now be possible to recover even from invalid
1564 input or output to the terminal. (thanks to Teemu Kalvas)
1565 ** provided a first cut at implementing STRING-TO-OCTETS and
1566 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1567 ** altered the SB-MD5 contributed module slightly, changing the
1568 interface just enough for it to be supportable for builds where
1569 lisp characters are not eight bits.
1570 * fixed some bugs revealed by Paul Dietz' test suite:
1571 ** the FORMATTER-generated functions for ~V[ conditionals require
1572 the correct number of arguments.
1573 ** READ-FROM-STRING returns the mandated second value when applied
1574 to displaced strings.
1575 ** the #\Rubout and #\Backspace characters are treated as invalid
1576 constituent characters by the tokenizer.
1578 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1579 * new feature: reloading changed shared object files with
1580 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1581 * new feature: references to foreign variables and functions
1582 can now be compiled and loaded before the corresponding shared
1583 object file is loaded, as long as the foreign definitions are
1584 available at runtime.
1585 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1586 supported. (thanks to Dan Debertin)
1587 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1588 just keywords. (thanks to Vincent Arkesteijn)
1589 * fixed bug #331: structure-class instances corresponding to
1590 DEFSTRUCT forms are now created eagerly.
1591 * fixed bug #345: backtraces from calls to undefined functions work
1592 on x86 as well. Related bug #61 is now also partially fixed on x86
1593 (backtraces from throws to unknown catch tags.)
1594 * bug fix: lambda-list parsing is now stricter vrt. order and number
1595 of lambda-list keywords.
1596 * bug fix: as specified by AMOP, an error is signalled if a
1597 class-option appears multiple times in a DEFCLASS form. (reported
1599 * bug fix: RANDOM can be compiled when the compiler derives the type
1600 of its numeric argument as a disjoint set of small integers.
1601 (reported by Paul Dietz)
1602 * bug fix: starting a core saved with shared objects loaded when
1603 those objects are not available no longer causes threaded SBCL to
1604 hang. (reported by Sean Ross)
1605 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1607 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1608 argument, which must always be NIL. (reported by Kalle Niemitalo)
1609 * bug fix: printing 1.0d+23 no longer results in an error.
1610 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1611 * bug fix: structure slot setters preserve evaluation order. (thanks
1613 * fixed some bugs related to Unicode integration:
1614 ** RUN-PROGRAM can allow its child to take input from a Lisp
1615 stream. (reported by Stefan Scholl)
1616 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1617 locales. (reported by Ken Causey)
1618 * fixed some bugs revealed by Paul Dietz' test suite:
1619 ** INCF, DECF and REMF evaluate their place form as specified in
1621 ** FORMATTER expands ~{ ~} iteration directives with V or #
1622 parameters correctly.
1623 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1624 consequent uses no arguments correctly.
1625 ** the system has a partial understanding of the (COMPLEX RATIO)
1627 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1630 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1631 * new feature: a build-time option (controlled by the :SB-UNICODE
1632 keyword feature, enabled by default) for building the system with
1633 support for the entire 21-bit character space defined by the
1635 * new feature: the system now has rudimentary external-format
1636 support; the primary user-visible change at this time is that
1637 characters with the high bit set (such as lower-case-e-acute) will
1638 print correctly to a terminal in a UTF-8 environment.
1639 * minor incompatible change: BASE-CHAR no longer names a class;
1640 however, CHARACTER continues to do so, as required by ANSI.
1641 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1642 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1643 has been moved to the SB-EXT package (temporarily re-exported from
1645 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1646 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1648 * fixed bug #351: better error-handlind and reporting for malformed
1650 * fixed bug #350: bignum-printing is now more memory-efficient,
1651 allowing printing of very large bignums, eg. (expt 2 10000000).
1652 (reported by Bruno Haible)
1653 * fixed bug #302: better primitive-type selection for intersection
1655 * fixed bug #308: non-graphic characters now all have names, as
1656 required. (reported by Bruno Haible)
1657 * bug fix: redefining a class with different superclasses now correctly
1658 removes it from the direct-subclasses of its previous superclasses.
1659 (reported by David Morse)
1660 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1661 new value now works. (reported by Bruno Haible)
1662 * bug fix: correct canonicalization of multiple non-standard slot
1663 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1664 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1665 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1666 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1667 now exists, an signals an error.
1668 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1669 during macroexpansion for non-iteration variables as well. (reported
1670 by Bruno Haible for CMUCL)
1671 * bug fix: Cyclic structures and unprintable objects in compiler
1672 messages no longer cause errors. (reported by Bruno Haible)
1673 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1674 and READ-FROM-STRING all now return a primary value of NIL if
1675 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1676 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1677 (reported by Bruno Haible for CMUCL)
1678 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1679 do not designate a condition. (reported by Bruno Haible for
1681 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1682 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1683 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1684 permitting resolution in favour of any of the conflicting symbols.
1685 (reported by Bruno Haible for CMUCL)
1686 * bug fix: EQUAL compiler optimizations is less aggressive on
1687 strings which can potentially compare true despite having distinct
1688 specialized array element types.
1689 * bug fix: unit enumerations can be defined without dividing by
1690 zero. (thanks to Vincent Arkesteijn)
1691 * FORMAT compile-time argument count checking has been enhanced.
1692 (report from Bruno Haible for CMUCL)
1693 * a partial workaround for the bug 262: the compiler does not try to
1694 inline-expand a local function doing RETURN-FROM from a deleted
1695 BLOCK. (thanks to Peter Denno for the bug report and to David
1696 Wragg for the simple test case)
1697 * fixed some bugs revealed by Paul Dietz' test suite:
1698 ** RENAME-PACKAGE allows all package designators as new package
1700 ** constraint propagation and lambda variable substitution are
1701 more cautious in dealing with partially deleted code.
1702 ** compiler sometimes lost reoptimization passes.
1703 ** CERROR, given a condition as condition designator, passes its
1704 remaining arguments to the continue format control without
1706 ** Case-altering FORMAT directives work correctly on non-ASCII
1708 ** The REAL type specifier handles bounds outside the floating
1709 point ranges without signalling FLOATING-POINT-OVERFLOW.
1710 ** Functions with IR1-transformations can create intercomponent
1711 references to global functions.
1712 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1714 ** FORMAT ~R treats a nil value for its first parameter correctly.
1716 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1717 * enhancement: saving cores with foreign code loaded is now
1718 supported on x86/NetBSD and sparc/Linux in addition to the previously
1719 supported platforms.
1720 * bug fix: on some platforms repeated installations caused multiple
1721 copies of HTML documentation to be installed -- should not happen
1722 any more. (reported by Stefan Scholl)
1723 * bug fix: parsing self-recursive alien record types multiple times
1724 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1725 original patch by Helmut Eller for CMUCL)
1726 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1727 (thanks to Richard Kreuter)
1728 * bug fix: defining classes whose accessors are methods on existing
1729 generic functions in other (locked) packages no longer signals
1730 bogus package lock violations. (reported by François-René Rideau)
1731 * bug fix: special variables as DEFMETHOD parameters no longer have
1732 associated bogus type declarations. (reported by David Wragg and
1734 * bug fix: read-write consistency on streams of element-type
1735 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1736 * bug fix: redefiniton of the only method of a generic function with
1737 no DEFGENERIC no longer emits a full WARNING. In addition,
1738 redefinition of generic functions with no DEFGENERIC to an
1739 incompatible lambda list now signals an error. (thanks to Zach
1741 * bug fix: DEFGENERIC now works even when there's a function of the
1742 same name in an enclosing lexical environment. (thanks to Zach
1744 * fixed compiler failure, caused by instrumenting code during
1745 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1746 * optimization: added loop analysis and improved register allocation
1747 * fixed some bugs revealed by Paul Dietz' test suite:
1748 ** POSITION on displaced vectors with non-zero displacement
1749 returns the right answer.
1750 ** (SIMPLE-STRING) is a valid type specifier for sequence
1752 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1754 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1755 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1757 ** The justification version of the FORMAT ~< directive treats
1758 non-zero minpad parameter correctly.
1760 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1761 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1762 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1763 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1764 the supported interface.
1765 * new feature: Single-stepping of code compiled with DEBUG 2 or
1766 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1767 * new feature: saving cores with foreign code loaded is now
1768 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1769 Timothy Moore's work for CMUCL)
1770 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1771 parameters to * instead of NIL if no initform is supplied.
1772 (reported by Johan Bockgaard)
1773 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1774 correctly when FUNCALL appears as the car of the form. Note:
1775 despite this FUNCALL forms are not currently subject to
1776 compiler-macro expansion. (port of Raymond Toy's fix for the
1777 same from CMUCL, reported by Johan Bockgaard)
1778 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1779 (thanks for Teemu Kalvas)
1780 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1781 case instead of terminating the iteration (thanks for Julian
1782 Squires, Sean Champ and Raymond Toy)
1783 * bug fix: incorrect expansion of defgeneric that caused a style
1784 warning. (thanks for Zach Beane)
1785 * bug fix: slot accessor effective method computation works properly
1786 for classes with multiple non-standard applicable methods on
1787 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1788 * on x86 compiler supports stack allocation of results of LIST and
1789 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1790 CMUCL implementation by Gerd Moellmann)
1791 * fixed some bugs revealed by Paul Dietz' test suite:
1792 ** FORMAT strings with both the ~<~:;~> form of the justification
1793 directive and pretty-printing directives cause an error.
1795 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1796 * incompatible change: the internal functions
1797 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1798 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1799 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1800 instead of the old functions.
1801 * new feature: on platforms where "dladdr" is available foreign
1802 function names now appear in backtraces. (based on Helmut Eller's
1804 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1805 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1807 * documentation: ASDF manual is now distributed with SBCL.
1808 * bug fix: SBCL can now load its contributed modules with REQUIRE
1809 even if the system-provided entries have been removed from
1810 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1812 * bug fix: backtraces involving undefined functions or assembly
1813 routines are more informative. (thanks to Brian Downing)
1814 * bug fix: mutually referent alien structures now work correctly.
1815 (reported by Rick Taube)
1816 * bug fix: structures defined by WITH-ALIEN can be referred to
1817 within other definitions in the same WITH-ALIEN.
1818 * bug fix: division operators (MOD, TRUNCATE and the like) with
1819 constant zero divisors and integer dividends no longer generate
1821 * bug fix: provide default methods for INPUT-STREAM-P and
1822 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1823 * bug fix: improve the detection and resolution of MOP metacycles
1824 (where effective method computation depends on the generic function
1825 having its effective method computed). (reported by Bruno Haible)
1826 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1827 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1828 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1829 * bug fix: pathnames with relative directory components can be
1830 represented relative to default pathnames.
1831 * optimization: in taking the GCD of bignums, reduce the two bignums
1832 to approximately the same size (using Euclid's algorithm) before
1833 applying the more sophisticated binary GCD. (thanks to Juho
1835 * optimization: COUNT on bitvectors now operates word-at-a-time.
1836 * optimization: ASH with a positive, but not necessarily constant,
1837 (leftwards) shift, when in a modular context, is compiled to a
1839 * fixed some bugs revealed by Paul Dietz' test suite:
1840 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1841 if the corresponding argument is NIL.
1842 ** FORMAT directives accepting a minpad parameter treat negative
1844 ** literal commas as character parameters to FORMAT directives are
1846 ** literal spaces directly after ~<Newline> directives within a
1847 format-logical-block (~:< ~@:>) do not induce :FILL-style
1848 conditional newlines.
1849 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1850 as specified: it no longer includes conditional newlines).
1851 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1853 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1854 :PER-LINE-PREFIX argument does not evaluate to a string.
1856 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1857 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1858 the manual for details; for now, package locks can be disabled by
1859 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1860 if no major problems are found then it is likely that they will be
1861 compiled in unconditionally.
1862 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1863 unsupported operators on all platforms. To load a shared library
1864 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1865 object file, link it into a shared library outside of SBCL and
1866 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1868 * bug workaround: ROOM T and the GC were not working together
1869 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1870 reporting facility aren't preserved. That reporting has been
1871 disabled, so now until and unless someone figures out how to make it
1872 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1873 * minor incompatible change: as threatened around sbcl-0.8.0, the
1874 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1875 The symbols are also exported from SB-PCL for backwards
1876 compatibility, but more so than before SB-PCL should be treated as
1877 an implementation-internal package.
1878 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1880 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1881 It is known as of this release not to work on the Alpha, however.
1882 * fixed bug #167: errors signalled due to illegal syntax in method
1883 bodies are now more legible.
1884 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1885 designators and can hence be used with TYPEP.
1886 * fixed bug #333: CHECK-TYPE now ensures that the type error
1887 signalled, if any, has the right object to be accessed by
1888 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1889 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1890 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1892 * fixed bug #334: programmatic addition of slots using specialized
1893 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1894 and :ALLOCATION :CLASS slots.
1895 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1896 float exponents. (rereported by Peter Seibel)
1897 * fixed a bug: #\Space (and other whitespace characters) are no
1898 longer considered to be macro characters in standard syntax by
1899 GET-MACRO-CHARACTER.
1900 * fixed bug: initialization of condition class metaobjects no longer
1901 causes an instance of the condition to be created. (reported by
1903 * fixed bug: it is now possible to have slots such that
1904 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1905 description is neither :INSTANCE nor :CLASS.
1906 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1907 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1908 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1909 non-standard SLOT-DEFINITION-ALLOCATION values.
1910 * fixed bugs: various race conditions handling exiting threads.
1911 CL-PPCRE's thread torture test now passes.
1912 * fixed arguably-a-bug: GC time proportional to number of threads in
1913 system even when most of them are idle
1914 * optimization: improved performance of BIT and SBIT on bit-vectors.
1915 * .fasl file incompatibility: The fasl file version number has
1916 been incremented because of changes associated with package locks.
1918 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1919 * minor incompatible change: the system no longer provides
1920 optimization hints (conditions which are TYPEP
1921 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1922 mode; these hints are still emitted when higher SPEED optimization
1924 * new contrib module: a sampling profiler (profiling by statistical
1925 sampling, rather than by instrumenting functions) is available as
1926 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1927 * the behaviour of the standard function ED is now customizeable by
1928 third parties through a hook variable: see ED's documentation
1929 string for information on the protocol.
1930 * the compiler no longer emits efficiency notes for (FUNCALL X)
1931 when the type of X is uncertain under default optimization
1933 * fixed bug 276: mutating a binding of a specialized parameter to a
1934 method to something that is not TYPEP the specializer is now
1936 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1937 exhibit the required behaviour on the x86 platform. (thanks to
1938 Peter van Eynde, Eric Marsden and Bruno Haible)
1939 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1940 even for difficult arguments. (reported by Peter Graves)
1941 * fixed bug 141a: the backquote printer now descends quoted
1943 * fixed another bug in backquote printing: no more destructive
1944 modification of the form's list structure. (reported by Brian
1946 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1947 move between its address being taken and the call to
1948 interrupt_thread, fixing a crashing race condition.
1949 * the SB-POSIX contrib implementation has been adjusted so that it
1950 no longer exhibits ridiculously poor performance when constructing
1951 instances corresponding to C structs.
1953 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1954 * minor incompatible change: the sb-grovel contrib now treats C
1955 structures as alien (in the sense of SB-ALIEN) objects rather than
1956 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1957 has implications for memory management of client code
1958 (sb-grovel-returned objects must now be manually managed) and for
1959 type safety (alien objects now have full types).
1960 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1961 used to control emission of compiler diagnostics, rather than the
1962 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1963 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1964 quality should be considered deprecated.
1965 * install.sh now installs the user manual as well
1966 * (not quite a new documentable feature, but worth considering in
1967 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1968 beginnings of a semantically meaningful condition hierarchy is
1969 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1971 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1972 designator as the defaults argument.
1973 * fixed bug: Displaced arrays whose displaced-to array has become
1974 too small now cause ARRAY-DIMENSION to signal an error, providing
1975 for safer bounds-checking. (reported by Bruno Haible)
1976 * fixed bug: DEFCLASS slot definitions with identical :READER and
1977 :WRITER names now signal a reasonable error. (reported by Thomas
1979 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1981 * fixed bug: Invalid slot specification errors now print correctly.
1982 (thanks to Zach Beane)
1983 * fixed bug 320: Shared to local slot value transfers in class
1984 redefinitions now happen corrently from superclasses as
1985 well. (reported by Bruno Haible)
1986 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1988 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1989 improper lists correctly. (reported by Bruno Haible)
1990 * fixed bug 313: source-transform for <fun-name> was erroneously
1991 applied to a call of a value of a variable with name <fun-name>.
1992 (reported by Antonio Menezes Leitao)
1993 * fixed bug 307: The obsolete instance protocol ensures that
1994 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1995 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1996 remove dead unknown-values globs from the middle of the stack.
1997 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1998 easier to resume long computations after using *BREAK-ON-SIGNALS*
1999 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2000 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2001 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2002 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2003 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2004 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2006 * fixed a (fairly theoretical) bug in string printing: if
2007 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2008 does not have array-element-type equal to the most general string
2010 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2011 function name. (thanks to Nikodemus Siivola)
2012 * fixed bug: compile-time format string checker failed on
2013 non-closed ~{. (reported by Thomas F Burdick)
2014 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2015 don't warn on legal loop code involving more than one aggregate
2016 boolean. (thanks to Nikodemus Siivola)
2017 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2018 in keyword position to MAKE-PACKAGE was not being reported as
2020 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2021 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2023 * fixed bugs 280 and 312: the checking for multiple definitions in a
2024 file is less likely to become confused by uses of inline
2026 * fixed bug: the #S reader macro performs the keyword coercion
2027 specified for slot names. (reported by Kalle Niemitalo)
2028 * fixed bug: lambda lists may contain symbols whose names start with
2029 & but are not lambda-list-keywords; their occurrence triggers a
2031 * fixed bug 321: define-method-combination argument lambda lists do
2032 not cause invalid code to be generated when &optional or &aux
2033 variables have default values. (reported by Bruno Haible)
2034 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2035 have CLOS classes; this appears also to have fixed reported
2036 instability in stack exhaustion detection.
2037 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2038 MUFFLE-WARNING when no associated restart is present is now
2040 * optimization: rearranged the expansion of various defining macros
2041 so that each expands into only one top-level form in a
2042 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2044 * optimization: used a previously little-used slot in symbols to
2045 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2047 * fixed some bugs revealed by Paul Dietz' test suite:
2048 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2050 ** Fixed an optimization bug related to inheritance of initforms
2051 from local to shared slots.
2052 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2053 ** CAST optimizer forgot to flush argument derived type.
2054 ** print/read consistency on floats is now orders of magnitude
2055 more likely. (thanks also to Bruno Haible for a similar report
2057 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2058 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2059 for objects of type REAL. Make it so.
2060 ** SXHASH is specified (infelicitously) to respect similarity,
2061 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2062 it so. (thanks to Markus Ziegler)
2063 ** on the Alpha, the compiler succeeds in compiling functions
2064 returning a known number of arguments greater than 63.
2065 ** fixed handling of invalid NIL arguments in keyword position
2067 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2069 ** provided a readably-printable representation for RANDOM-STATE
2071 ** ensured that pathnames, where they have a namestring, always
2072 print using #P"..." syntax.
2074 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2075 * Support for the forthcoming 2.0 version of the NetBSD kernel
2076 running on x86 hardware has been added. (thanks to Perry
2077 E. Metzger most immediately, and others for their past work)
2078 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2079 current release version; SBCL's OpenBSD support had been broken
2080 since about the time of OpenBSD's switch to ELF binary format.)
2081 * [placeholder for DX summary]
2082 ** user code with &REST lists declared dynamic-extent, under high
2083 speed or space and low safety and debug optimization policy.
2084 * The manual has been converted to Texinfo format and the debugger
2085 chapter from the cmucl manual has been added.
2086 * A facility has been added to extract documentation strings from
2087 sbcl and store them as Texinfo-formatted snippets for inclusion in
2088 the manual (via Texinfo's @include directive)
2089 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2090 the test case to Dave Roberts)
2091 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2092 pointers. (reported by Sean Ross)
2093 * bug fix: PROFILE output is printed nicely even for large numerical
2094 values. (thanks to Zach Beane)
2095 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2096 greater than 32 handle EOF correctly.
2097 * bug fix: on X86 an immediate argument of the IMUL instruction is
2098 correctly printed in disassembly. (thanks to Lutz Euler)
2099 * bug fix: class slots in redefined classes preserve their old
2100 values. (thanks to Bruno Haible and Nikodemus Siivola)
2101 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2102 succeeds. (reported by Marco Baringer)
2103 * fixed some bugs revealed by Paul Dietz' test suite:
2104 ** READ-SEQUENCE now works on ECHO-STREAMs.
2105 ** RATIONALIZE works more according to its specification. (thanks
2108 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2109 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2110 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2111 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2112 should matter to you only if you rebind the printer control
2113 variables and then find you want different bindings in the
2114 debugger than in the ordinary execution of your program.)
2115 * The runtime build system has been tweaked to support building
2116 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2117 assembler and linker. (thanks to Nikodemus Siivola)
2118 * Unbound, undefined, undeclared variables now trigger full
2119 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2120 more often programmer error than deliberate exploitation of undefined
2122 * optimization: the hash algorithm for strings has changed to one
2123 that is less vulnerable to spurious collisions. (thanks to Juho
2125 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2126 needless bounds checking. (thanks to Juho Snellman)
2127 * optimization: implemented multiplication as a modular
2128 (UNSIGNED-BYTE 32) operation on the PPC backend.
2129 * fixed some bugs revealed by Paul Dietz' test suite:
2130 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2132 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2133 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2134 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2136 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2138 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2140 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2141 their output stream on EOF from read.
2142 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2143 have been read to end-of-file.
2144 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2146 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2147 description of determination of which consecutive characters
2149 ** Printing the "Space" character with escaping on now yields "#\\ ",
2150 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2151 ** Reading floating-point numbers with *READ-BASE* set to a number
2152 less than 10 works correctly.
2153 ** Reading floating-point numbers with *READ-BASE* set to a number
2154 more than 10 works correctly.
2155 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2156 the readtable currently in effect.
2158 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2159 * minor incompatible change: parsing of namestrings on a physical
2160 (Unix) host has changed; numbers after the final #\. in a
2161 namestring are no longer interpreted as a version field. This is
2162 intented to be largely invisible to the user, except that the
2163 meaning of the namestring "*.*.*" has changed: it now refers to a
2164 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2165 should usually be replaced by
2166 (make-pathname :name :wild :type :wild :version :wild)
2167 with the added benefit that this is more likely to be portable.
2168 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2169 option to OPEN now signals an error if the file being opened
2170 exists; this may have an impact on existing code.
2171 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2172 signals received, on the PowerPC platforms (both Linux and
2173 Darwin). (thanks to Pierre Mai for pointing out the location of
2175 * several fixes on OS X: The system now builds and runs cleanly on
2176 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2177 (thanks to Brian Mastenbrook)
2178 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2179 second-resolution: integer multiples of 1/3600 between -24 and 24.
2180 (thanks to Vincent Arkesteijn)
2181 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2182 type when called with 1 argument; PEEK-CHAR checked type of
2183 PEEK-TYPE only after having read first character from a
2184 stream. (reported by Peter Graves)
2185 * bug fix: the garbage collector now has much better locality
2186 behaviour, and in particular no longer treats all memory as being
2187 exhausted when many small objects point to each other in a deeply
2189 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2190 recognized as being TYPEP their class.
2191 * bug fix: the PUSHNEW documentation string has been corrected.
2192 (thanks to Vincent Arkesteijn)
2193 * bug fix: defaulting of the value for the last of an atypically
2194 large number of multiple values being bound was not being
2195 performed correctly on the Alpha or PPC platforms
2196 * optimization: implemented multiplication as a modular
2197 (UNSIGNED-BYTE 32) operation on the x86 backend.
2198 * optimization: SEARCH on simple-base-strings can now be open-coded.
2199 (see also contrib/compiler-extras.lisp for inspiration for
2200 teaching the compiler about the Boyer-Moore algorithm).
2201 * value, returned by MAX (and MIN) called with several EQUALP, but
2202 not EQL, arguments now does not depend on compiler settings.
2203 * fixed some bugs revealed by Paul Dietz' test suite:
2204 ** in stack analysis liveness information is propagated from
2205 non-local entry points.
2206 ** pathwise CAST removing failed when the CAST node did not start
2208 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2209 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2211 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2212 host is already defined.
2213 ** RENAME-FILE works on streams instead of signalling an internal
2215 ** PEEK-CHAR uses the current readtable when determining whether
2216 or not a character is whitespace.
2217 ** MERGE-PATHNAMES handles the case when the pathname does not
2218 specify a name while the default-pathname specifies a version.
2219 ** Pathnames now stand a better chance of respecting print/read
2221 ** Attempting to use standardized file system operators with a
2222 pathname with invalid :DIRECTORY components signals a
2224 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2226 ** DIRECTORY on logical pathnames is more correct.
2227 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2228 signal a TYPE-ERROR if their argument is not a stream.
2229 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2230 designator argument does not designate a stream.
2231 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2232 examining the synonym.
2233 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2235 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2236 element-type larger than ([UN]SIGNED-BYTE 32).
2238 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2239 * When built with the :SB-FUTEX feature, threaded builds now take
2240 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2241 for faster/more reliable mutex and condition variable support.
2242 * Incompatible change (but one you probably shouldn't have been using
2243 anyway): the interface and code for arbitrating between multiple
2244 threads in the same user session has been redesigned.
2245 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2246 error when called without an explicit environment argument.
2247 (thanks to Nikodemus Siivola)
2248 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2249 confused about their position. (thanks to Adam Warner and Gerd
2251 * bug fix: Pretty printing backquoted forms with unquotations in the
2252 argument list position of various code constructs such as LAMBDA
2253 now works correctly. (reported by Paul Dietz)
2254 * bug fix: Pretty printing unquotations no longer loses all
2255 stream position information.
2256 * optimization: performance of string output streams is now less
2257 poor for multiple small sequence writes.
2258 * optimization: performance of CSUBTYPEP in the presence of complex
2259 expressions involving CONS and NOT many times has been improved.
2260 (reported by Paul Dietz)
2261 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2263 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2264 streams for the REPL, for the debugger, and so on. (thanks to
2266 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2267 * fixed some bugs revealed by Paul Dietz' test suite:
2268 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2269 is ignored if it is too small, rather than propagating through
2270 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2271 ** extremely complex negations of CONS types were not being
2272 sufficiently canonicalized, leading to inconsistencies in
2274 ** VALUES tranformer lost derived type.
2276 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2277 * fixed a bootstrapping bug: the build process no longer assumes
2278 that the various BOOLE-related constants have the same value in
2279 host and target lisps. (noted by Paul Dietz' test suite on an
2280 SBCL binary built from CLISP)
2281 * The system can now be dynamically linked on the MIPS platform,
2282 which enables dynamic loading of foreign code from Lisp. (thanks
2283 to Ralf Baechle for discussions on the MIPS ABI)
2284 * The system now records debugging information for its own source
2285 files in a filesystem-position-independent manner, relative to
2286 the "SYS" logical host.
2287 * fixed a compiler bug: MV-LET convertion did not check references
2288 to the "max args" entry point. (reported by Brian Downing)
2289 * tweaked disassembly notes to be less confident about proclaiming
2290 some instruction as an LRA. (thanks to Brian Downing)
2291 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2292 now each have their own history, command character, and other
2293 characteristics. (thanks to David Lichteblau)
2294 * fixed some bugs revealed by Paul Dietz' test suite:
2295 ** compiler failure in compiling LOGAND expressions including a
2297 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2298 shift greater than 32.
2299 ** FLUSH-DEST did not mark blocks for type check regeneration.
2300 ** HANDLER-CASE failed to accept declarations in handler clauses
2301 in some circumstances.
2303 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2304 * New code in contrib/sb-introspect (still probably not entirely
2305 stable yet) provides some support for smart Lisp development
2306 environments like SLIME.
2307 * The conditions signalled for errors occurring when loading .fasl
2308 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2309 in a way which should help ASDF recover gracefully.
2310 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2311 stuff has been cleaned up. If you code contrib/ stuff, this might
2312 affect you, and you can look at contrib/README, contrib/STANDARDS,
2313 and/or the 0.8.4.27 diff to check.
2314 * In full calls the compiler now does not generate checks for declared
2315 argument types for all arguments.
2316 * various threading fixes
2317 ** and some experimental patches which didn't make it into
2318 the main tree for this release, but which are shipped in
2319 contrib/experimental-thread.patch as a possible fix for some
2320 failures (deadlock, spinning...) in GC-intensive multithreaded
2322 * fixed PPC build problem (source code incompatibility of different
2323 library versions): added offsetof() hackery which attempts to divine
2324 where glibc maintainers put uc_mcontext today
2325 * fixed bug 282: compiler does not trust type assertions while passing
2326 arguments to a full call.
2327 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2328 &OPTIONAL VALUES type parameter.
2329 * fix bug 214: algorithm for noting rejected templates is now more
2330 similar to that of template seletion. (also reported by rydis on
2332 * fixed bug 141b: printing backquoted information readably and prettily
2333 inserts a space where necessary.
2334 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2335 (CHARACTER 10) are now reported as errors, rather than propagated
2336 as unknown types. (reported by piso on #lisp)
2337 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2338 with values NIL and :ERROR. (thanks to Milan Zamazal)
2339 * fixed bug 191c: CLOS now does proper keyword argument checking as
2340 described in CLHS 7.6.5 and 7.6.5.1.
2341 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2342 longer raise an error; further, using a list as a for-as-arithmetic
2343 counter now raises a meaningful error.
2344 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2345 now understood by sequence creation functions such as MAKE-SEQUENCE
2347 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2348 a STRING-INPUT-STREAM.
2349 * compiler enhancement: SIGNUM is now better able to derive the type
2351 * type declarations inside WITH-SLOTS are checked. (reported by
2353 * fixed some bugs revealed by Paul Dietz' test suite:
2354 ** incorrect optimization of TRUNCATE for a positive first
2355 argument and negative second.
2356 ** compiler failure in let-convertion during flushing dead code.
2357 ** compiler failure while deriving type of TRUNCATE on an
2358 interval, containing 0.
2359 ** ASH of a negative bignum by a negative bignum count now returns
2361 ** intersection of CONS types now canonicalizes properly, fixing
2362 inconsistencies in SUBTYPEP.
2364 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2365 * incompatible change: The --disable-debugger command line
2366 option now clobbers the debugger at a more fundamental
2367 level, by redefining #'INVOKE-DEBUGGER instead of by
2368 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2369 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2370 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2371 enter the debugger REPL and then suffer recursive errors
2372 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2373 while under the new system, BREAK in --disable-debugger mode
2374 terminates the system just as an unhandled error would.
2375 * fixed compiler performance when processing loops with a step >1;
2376 * bug fix: DOCUMENTATION now retrieves generic function
2377 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2378 support has been systematized, and now supports the methods
2379 specified by ANSI, along with a default method and a method for
2380 slot documentation. (reported by Nathan Froyd)
2381 * bug fix: effective methods associated with a generic function are
2382 no longer cached over a change of that generic function's method
2383 combination. (reported by Andreas Fuchs)
2384 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2385 names a non-existent directory. (thanks to Andreas Fuchs)
2386 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2387 the PPC platform, lead to stack corruption; this has been fixed.
2388 (reported by Rainer Joswig)
2389 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2390 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2391 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2392 arithmetic in general, is now much more reliable on the PPC
2394 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2395 platform now returns the right answer.
2396 * optimization: restored some effective method precomputation in
2397 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2398 precomputation is now tunable.
2399 * optimization: compiler-internal data structure use has been
2400 reviewed, and changes have been made that should improve the
2401 performance of the compiler by about 20%.
2402 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2403 simple-base-strings and simple-bit-vectors is improved.
2404 * optimization: the optimization of 32-bit logical and arithmetic
2405 functions introduced in version 0.8.3 on the x86 has been
2406 implemented on the mips, ppc and sparc platforms; an
2407 implementation of the same facility, but for 64-bit arithmetic,
2408 has been added for the alpha.
2409 * microoptimization: the compiler is better able to make use of the
2410 x86 LEA instruction for multiplication by constants.
2411 * bug fix: in some situations compiler did not report usage of
2412 generic arithmetic in (SPEED 3) policy.
2413 * bug 145b fix: compiler used wrong type specifier while converting
2414 MEMBER-types to numeric.
2415 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2417 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2418 index argument now works properly on the Alpha platform.
2419 * bug fix: floating point exception treatment on the Alpha platform
2421 * bug fix: FILE-POSITION works much better on string input and
2422 output streams. (thanks to Nikodemus Siivola)
2423 * bug fix: many threading/garbage collection symptoms sorted.
2424 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2425 might be pseudo-atomic.
2426 * internal change: Stopping for GC is now done with signals not
2427 ptrace. GC is now done in whichever thread wanted it, instead of
2429 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2431 * bug fix: result form in DO is not contained in the implicit
2433 * incompatible change: ICR structure is changed; the value part of
2434 CONTINUATION is now called LVAR; corresponding functions are
2435 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2436 * added type deriver for ISQRT (thanks to Robert E. Brown).
2437 * bug fix: better support for loading from the command line when an
2438 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2440 * fixed some bugs revealed by Paul Dietz' test suite:
2441 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2442 ** ROUND and FROUND now give the right answer when given very
2443 small float arguments.
2444 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2446 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2447 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2448 ** LCM should return a non-negative integer.
2449 ** PARSE-INTEGER returned the index of a terminator instead of the
2450 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2451 ** PARSE-INTEGER returned an incorrect index being applied to a
2453 ** LCM with two arguments of 0 returns 0 rather than signalling
2455 ** unsigned addition of a 32-bit constant with the high bit set no
2456 longer causes an internal compiler error on the x86.
2457 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2458 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2459 with negative last argument.
2460 ** byte specifiers with zero size and position no longer cause
2461 an error during type derivation.
2462 ** bignum multiplication on the Alpha platform now returns the
2464 * porting: The system now builds on SuSE AMD64, although it still
2465 generates a 32-bit binary.
2466 * .fasl file incompatibility: The fasl file version number has
2467 been incremented (because of the changes to internal compiler
2468 data structures referred to above).
2470 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2471 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2472 more accurately, on the Darwin kernel running on PowerPC hardware.
2473 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2474 * Compiler code deletion notes now signal a condition of type
2475 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2476 an associated MUFFLE-WARNING restart.
2477 * The compiler now performs limited argument count validation of
2478 constant format strings in FORMAT, and where appropriate in ERROR,
2479 CERROR and WARN. (thanks to Gerd Moellmann)
2480 * New ASDF-INSTALL contrib can be used for automatic download and
2481 installation of third-party Lisp code from CCLAN or other sites
2483 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2484 which forces another thread to execute a function supplied by the
2486 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2487 now accept and act upon their :ELEMENT-TYPE keyword argument.
2488 (reported by Martin Atzmueller, Edi Weitz)
2489 * bug fix: FILE-POSITION now accepts position designators up to
2490 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2491 is the greater. (thanks to Patrik Nordebo)
2492 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2493 Kalle Olavi Niemitalo)
2494 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2495 printable. (reported by Eric Marsden)
2496 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2497 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2498 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2499 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2500 (thanks to Stig Sandoe)
2501 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2502 UNREAD-CHAR now correctly includes the unread character in the
2503 target sequence. (thanks to Gerd Moellmann)
2504 * bug fix in threaded builds: the system can now be suspended and
2505 resumed by shell job control with minimal disruption.
2506 * bug fixes in times and timezones >2038AD
2507 * better handling of "where is GNU make?" problem in build scripts
2508 (thanks to Nikodemus Siivola)
2509 * new optimization: inside a named function any reference to a
2510 function with the same name is considered to be a self-reference;
2511 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2512 optimization quality.
2513 * new optimization on x86: logical functions and + now have
2514 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2515 used when the result is truncated to 32 bits.
2516 * VALUES declaration is partially enabled.
2517 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2518 * fixed some bugs revealed by Paul Dietz' test suite:
2519 ** The system now obeys the constraint imposed by
2520 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2521 types form a lattice under type intersection.
2522 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2523 ** ASSOC now ignores NIL elements in an alist.
2524 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2525 and (1+ MOST-POSITIVE-FIXNUM) answers.
2526 ** The addition of a method with invalid qualifiers to a generic
2527 function does not cause an error to be signalled immediately;
2528 a warning is signalled, and the error is generated only on
2529 calling the generic function.
2530 * changed .fasl file version number, in part to add type codes for
2531 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2532 obscure ANSI requirements
2534 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2535 * fixed bug 148: failure to inline-expand a local function left
2536 garbage, confusing the compiler.
2537 * fixed bugs 3cd: structure slot readers perform type check if the
2538 slot can have an invalid value (i.e. it is either not initialized
2539 or can be written with a less specific slot writer).
2540 * bug fix: the compiler now traps array references to elements off
2541 the end of an array; previously, the bounds checking in some
2542 circumstances could go off-by-one.
2543 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2545 * type declarations for array element types now obey the description
2546 on the CLHS page "Declaration TYPE", as per discussions on
2547 sbcl-help around 2003-05-08. This means that a declaration
2548 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2549 declaration, all references to BAR will be asserted or assumed
2550 (with THE, so dependent on compiler policy) to involve objects of
2551 type FOO. Note that no such declaration is implied in
2552 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2553 * declared types of functions from the "Conditions"
2554 chapter. (reported by Paul Dietz)
2555 * bug fix: CERROR accepts a function as its first argument.
2556 * bug fix: NTH an NTHCDR accept a bignum as index
2557 arguments. (reported by Adam Warner)
2558 * optimization: character compare routines now optimize comparing
2559 against a constant character. (reported by Gilbert Baumann)
2560 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2561 argument now works properly on the MIPS platform.
2562 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2563 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2564 declared to have a functional type, does not cause an error
2566 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2567 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2568 * fixed bug: if last continuation of a deleted block has a
2569 destination, this destination should be deleted too. (reported by
2571 * fixed a bug in the bootstrap process: the host compiler's values
2572 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2573 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2574 test case from Patrik Nordebo)
2575 * improved the ability of the disassembler on the PPC platform to
2576 provide helpful disassembly notes.
2577 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2578 the class in more cases than previously.
2579 * bug fix: FILE-POSITION now understands :START and :END for
2580 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2581 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2582 8) data. (thanks to David Lichteblau)
2583 * bug fix: it is possible to add a method to a generic function
2584 without lambda list.
2585 * bug fix: reader failed to signal END-OF-FILE inside an
2586 object representation. (reported by Nikodemus Siivola)
2587 * fixed some bugs revealed by Paul Dietz' test suite:
2588 ** LAST and [N]BUTLAST should accept a bignum.
2589 ** condition slot accessors are methods.
2590 ** (VECTOR NIL) is a subtype of STRING.
2592 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2593 * minor incompatible change: some nonsensical specialized lambda
2594 lists (used in DEFMETHOD) which were previously ignored now signal
2596 * minor incompatible change: the system is now aware of the types of
2597 variables in the COMMON-LISP package, and will signal errors for
2598 most violations of these type constraints (where previously they
2599 were silently accepted).
2600 * minor incompatible change: COMPILE-FILE now uses the freedom
2601 afforded (ANSI 3.2.2.3) to use derived function types for
2602 functions defined in the same file. This also permits the system
2603 to warn on static type mismatches and function
2604 redefinition. (Currently it does not work with high DEBUG level.)
2605 * minor incompatible change: VALUES declaration is disabled.
2606 * When issuing notes, the compiler now signals a condition of type
2607 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2608 restart for use in user handlers. It is expected that the
2609 COMPILER-NOTE condition will eventually become a condition
2610 supertype to a hierarchy of note types, which will then be
2611 handleable in a similar fashion. However, at the moment, no such
2612 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2613 but it's an implementation detail, not a classification for the
2615 * Changes in type checking closed the following bugs:
2616 ** type checking of unused values (192b, 194d, 203);
2617 ** template selection based on unsafe type assertions (192c, 236);
2618 ** type checking in branches (194bc).
2619 * A short form of VALUES type specifier has ANSI meaning (it has
2620 increased the number of situations when SBCL cannot perform type
2622 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2623 keywords or constants is permissible.
2624 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2625 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2626 classes. (thanks to Antonio Martinez)
2627 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2628 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2629 argument to a pretty-print stream. Instead, it leaves any such
2630 operations to DESCRIBE-OBJECT methods.
2631 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2633 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2634 lambda lists. (thanks to David Lichteblau)
2635 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2636 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2637 (thanks to Gerd Moellmann)
2638 * fixed bug 246: increased compilation speed of long
2639 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2641 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2643 * DEFCONSTANT now throws a condition of type
2644 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2645 constant to a non-EQL value; CONTINUE and ABORT restarts
2646 respectively change and preserve the value.
2647 * fixed bug 63: The code walker, part of the implementation of CLOS,
2648 is now better at handling symbol macros.
2649 * bug fix: There is no longer an internal implementation type named
2650 CL:LENGTH. (reported by Raymond Toy)
2651 * bug fix: In macro-like defining macros/special operators the
2652 implicit block does not enclose the lambda list.
2653 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2654 enclosed in parentheses) are not suitable as type specifiers, and
2655 their use properly signals an error now.
2656 * bug fix: An argument count mismatch for a type specifier in code
2657 being compiled no longer causes an unhandled error at compile
2658 time, but signals a compile-time warning.
2659 * fixed simple vector readable printing
2660 * bug fix: DESCRIBE takes more care over whether the class
2661 precedence list slot of a class is bound before accessing it.
2662 (reported by Markus Krummenacker)
2663 * bug fix: FORMATTER can successfully compile pretty-printer format
2664 strings which use variants of the ~* directive inside.
2665 * bug fix: SEARCH now applies its TEST predicate to the elements of
2666 the arguments in the correct order. (thanks to Wolfhard Buss)
2667 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2668 in type inference. (thanks to Robert E. Brown)
2669 * bug fix: Reading in symbols with an explicit package name of ""
2670 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2671 * fixed some bugs revealed by Paul Dietz' test suite:
2672 ** NIL is now allowed as a structure slot name.
2673 ** Arbitrary numbers, not just REALs, are allowed in certain
2674 circumstances in LOOP for-as-arithmetic clauses.
2675 ** Multiple class redefinitions before slot access no longer
2676 causes a type error.
2677 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2678 association between the name and a class.
2679 ** Generic functions with non-standard method-combination and over
2680 five methods all of which return constants no longer return NIL
2681 after the first few invocations. (thanks to Gerd Moellmann)
2682 ** CALL-NEXT-METHOD with no arguments now passes the original
2683 values of the arguments, even in the presence of assignment.
2684 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2686 ** DISASSEMBLE works with closures and funcallable instances.
2687 ** ADD-METHOD now returns the generic function, not the new method.
2688 ** FIND-METHOD signals an error if the lengths of the specializers
2689 is incompatible with the generic function, even if the ERRORP
2691 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2692 which its argument is a member.
2693 ** DEFCLASS only redefines the class named by its class-name
2694 argument if that name is the proper name of the class;
2695 otherwise, it creates a new class.
2696 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2697 of the UNBOUND-SLOT condition to the name of the slot.
2698 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2699 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2700 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2701 SLOT-MAKUNBOUND in the specified fashion.
2703 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2704 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2705 cross-compilation host. As a consequence, we can now bootstrap our
2706 way up to SBCL starting with a bare gcc toolchain and human-readable
2707 source code (first the source to CLISP, then the source to SBCL).
2708 * A contributed module containing a partial implementation of the
2709 simple-streams interface has been included. (thanks to Rudi
2711 * A contributed module implementing the RFC1321 Message Digest
2712 Algorithm, known as MD5, has been included.
2713 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2714 no longer has any effect, as the code controlled by this feature
2715 has been deleted. (As far as we know, no-one has ever built using
2716 this feature, and its semantics were confused in any case).
2717 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2718 work on conditions (as required by the ANSI specification),
2719 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2720 expected behaviour on conditions. Users should note, however,
2721 that such behaviour is not required by the ANSI specification,
2722 and so use of this behaviour may render their code unportable.
2723 * fixed some bugs revealed by Paul Dietz' test suite:
2724 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2726 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2727 ** SXHASH on condition objects no longer returns NIL.
2728 ** :ALLOCATION :CLASS slots are better treated; their values are
2729 updated on class redefinition, and initforms inherited from
2730 superclasses are applied.
2731 ** REMOVE-METHOD returns its generic function argument even when
2732 no method was removed.
2733 ** SHARED-INITIALIZE now initializes the values of the requested
2734 slots, including those with :ALLOCATION :CLASS.
2735 ** ALLOCATE-INSTANCE now works on structure classes defined via
2736 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2738 ** SLOT-EXISTS-P now works on conditions, as well as structures
2740 ** MAKE-LOAD-FORM now has the required methods on
2741 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2742 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2743 keyword, and now implements the SLOT-NAMES argument.
2744 ** methods with &OPTIONAL arguments no longer allow too many
2745 arguments to be passed in the call without error.
2746 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2747 option is consistent with the required arguments of the generic
2748 function lambda list.
2749 * bug fix: REQUIRE accepts a string designator. (Thanks to
2751 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2752 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2753 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2754 * bug fix: The compiler now checks for duplicated variables in macro
2756 * bug fix: SETQ on globals returns the correct value.
2757 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2758 not a COMPILER-ERROR (followed by some other strange error on
2759 choosing the CONTINUE restart).
2760 * bug fix: make.sh and friends are now more consistent in the way that
2761 they look for GNU "make".
2763 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2764 * experimental native threads support (on x86 Linux >=2.4 only).
2765 This is not compiled in by default: you need to add :SB-THREAD to
2766 the target features. See the "Beyond ANSI" chapter of the manual
2768 * fix for longstanding nonANSIism: The old distinction between
2769 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2770 The return value from CL:FIND-CLASS is now a CLOS class, and
2771 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2772 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2773 * An interface to the MetaObject Protocol, as described in Kiczales,
2774 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2775 MIT Press, 1991, is available from the SB-MOP package.
2776 * incompatible change: the SB-PCL package should now be considered
2777 a private implementation detail, and no longer a semi-private MOP
2779 * minor incompatible change: due to rearrangement for threads, the
2780 control stack and binding stack are now allocated at arbitrary
2781 addresses instead of being hardcoded per-port. Users affected by
2782 this probably have to be doing advanced things with shared
2783 libraries, and will know who they are.
2784 * minor incompatible change: Previously, all --eval forms used were
2785 processed with READ before any of them were processed with EVAL.
2786 Now each --eval form is processed with both READ and EVAL before
2787 the next --eval form is processed. (Thus package operations like
2788 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2789 work as the user might reasonably expect.)
2790 * minor incompatible change: *STANDARD-INPUT* is now only an
2791 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2793 * minor incompatible change: Y-OR-N-P is now character-oriented,
2794 not line oriented. Also, YES-OR-NO-P now works without errors.
2795 (thanks to Antonio Martinez)
2796 * sb-aclrepl module improvements: an integrated inspector, added
2797 repl features, and a bug fix to :trace command.
2798 * Known functions, which cannot be open coded by the backend, are
2799 considered to be able to check types of their arguments. (fixing
2800 a bug report by Nathan J. Froyd)
2801 * fixed a bug in computing method discriminating functions: It is
2802 now possible to define methods specialized on classes which have
2803 forward-referenced superclasses. (thanks to Gerd Moellmann)
2804 * fixed evaluation order in optional entries (reported by Gilbert
2806 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2807 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2808 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2809 required-by-AMOP NAME argument, as well as CLASS and
2810 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2811 * fixed bug 20: DEFMETHOD can define methods using names that are
2812 not the proper names of classes to designate class specializers.
2813 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2814 Unix file descriptors, instead of blowing up. (thanks to Antonio
2816 * Garbage collection refactoring: user-visible change is that a
2817 call to the GC function during WITHOUT-GCING will not do garbage
2818 collection until the end of the WITHOUT-GCING. If you were doing
2819 this you were probably losing anyway.
2820 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2821 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2822 TYPEP the latter but not the former.
2823 * The compiler issues a full WARNING for calls to undefined functions
2824 with names from the CL package.
2825 * MAP-INTO for a vector destination is open coded. (reported by
2826 Brian Downing on c.l.l)
2827 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2828 documentation string.
2829 * fixed some bugs revealed by Paul Dietz' test suite:
2830 ** COPY-ALIST now signals an error if its argument is a dotted
2832 ** Condition slots are now accessed more correctly in the presence
2833 of multiple initargs for a given slot.
2834 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2835 exclude restarts of the same name associated with a different
2837 ** DEFCLASS of forward-referenced classes with another
2838 forward-referenced class in the superclasses list no longer
2840 ** Condition slots are now initialized once each, not multiple
2841 times. (thanks to Gerd Moellmann)
2842 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2844 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2845 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2846 arguments contain duplicated elements.
2847 ** RESTART-CASE understands local macros.
2848 ** RESTART-CASE associates exactly its own restarts with a condition.
2849 ** ENDP in safe mode checks its argument to be of type LIST.
2850 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2851 in question is unbound.
2852 ** Optimized MAKE-INSTANCE functions no longer cause internal
2853 assertion failures in the presence of duplicate initargs.
2854 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2855 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2856 propagated even in the ctor optimized implementation of
2858 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2860 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2861 * a better implementation of SXHASH on (simple) bit vectors,
2862 measured both in execution speed and in distribution of results
2863 over the positive fixnums, has been installed. Likewise, a better
2864 implementation of EQUAL for simple bit vectors is now available.
2865 * fixed CEILING optimization for a divisor of form 2^k.
2866 * fixed bug 240 (emitting extra style warnings "using the lexical
2867 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2868 by Antonio Martinez)
2869 * fixed SXHASH, giving different results for NIL depending on type
2870 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2871 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2872 variable. (found by Rolf Wester)
2873 * SBCL does not ignore type declarations for special
2874 variables. (reported by rif on c.l.l 2003-03-05)
2875 * some bug fixes in contrib/sb-aclrepl/
2876 * fixed some bugs revealed by Paul Dietz' test suite:
2877 ** a bug in the CONS type specifier, whereby the CAR and CDR
2878 types got intertwined, has been fixed;
2879 ** the type system is now able to reason about the interaction
2880 between INTEGER and RATIO types more completely;
2881 ** APPEND, [N]REVERSE and NRECONC check that those their
2882 arguments, which must be proper lists, are really so;
2883 ** An array specialized to be unable to hold elements has been
2884 implemented, as required -- yes, really -- by ANSI;
2885 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2886 on malformed property lists;
2888 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2889 * incompatible packaging change: in line with Unix convention,
2890 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2891 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2892 * REQUIRE and PROVIDE are now optionally capable of doing something
2893 useful. See the documentation string for REQUIRE.
2894 * infrastructure for a managed SBCL contrib system: contributed
2895 modules in this release include:
2896 ** the ASDF system definition facility;
2897 ** an interface to the BSD Sockets API;
2898 ** an ACL-like convenience interface to the repl;
2899 (thanks to Kevin Rosenberg)
2900 ** an implementation of ROTATE-BYTE, with efficient implementation
2902 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2903 gives a closer approximation to the right answer than previously.
2904 (thanks to Raymond Toy)
2905 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2906 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2907 optional environment arguments, as required by ANSI.
2908 * fixed bugs in other functions taking environment objects, allowing
2909 calls with an explicit NIL environment argument to be compiled
2911 * fixed bug 228: primary return values from
2912 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2913 COMPILE or FUNCTION.
2914 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2915 :TYPE will no longer signal errors on innocuous objects.
2916 * fixed bug 231b: SETQ is better at respecting type declarations in
2917 the lexical environment.
2918 * fixed a bug in DEFCLASS: classes named by symbols with no or
2919 unprintable packages can now be defined.
2920 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2921 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2922 * fixed compiler failure related to checking types of functions.
2923 (reported by Robert E. Brown)
2924 * the compiler is now much more consistent in its error-checking
2925 treatment of bounding index arguments to sequence functions: in
2926 (SAFETY 3) code, errors will be signalled in almost all cases if
2927 invalid sequence bounding indices are passed to functions defined
2928 by ANSI to operate on sequences.
2929 * fixed a bug in the build procedure: documentation of SBCL-specific
2930 packages is now preserved and available in the final Lisp image.
2931 * lifted FDEFINITION lookup out of loops in the implementation of
2932 many list operations. (thanks to Robert E. Brown)
2933 * fixed a bug in the reader: the #n# reader macro now works for
2934 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2935 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2936 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2937 E. Brown and Tony Martinez respectively)
2938 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2939 SLOT-BOUNDP: in particular, it is now able to optimize them much
2940 better, and is now not vulnerable to having packages renamed.
2941 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2942 always called when a slot is not present in an instance. (thanks
2944 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2945 longer signal an error on unreading a character following EOF on
2946 the previous constituent stream. (thanks to Tony Martinez)
2947 * fixed some bugs revealed by Paul Dietz' test suite:
2948 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2949 not just nonnegative fixnums;
2950 ** the logical bit-array operators such as BIT-AND now accept an
2951 explicit NIL for their "opt-arg" argument (to indicate a
2952 freshly-consed result bit-array);
2953 ** ELT now signals an error on an invalid sequence index in safe
2955 ** the type system is now cleverer about negations of numeric
2956 types, and consequently understands the BIGNUM and RATIO types
2958 ** the type system is now cleverer about the interaction between
2959 INTEGER and RATIO types: while bugs still remain, many more
2960 cases are accurately computed;
2961 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2962 if it is in the last clause;
2963 ** CONSTANTLY now correctly returns a side-effect-free function in
2965 ** DECLARE is no longer treated as a special-operator; in
2966 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2967 * incremented fasl file version number due to the change in the
2968 DEFSTRUCT-SLOT-DESCRIPTION structure.
2970 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2971 * minor incompatible change: code processed by the "interpreter" or
2972 EVAL now has a compilation optimization policy of (DEBUG 2)
2973 (changed from (DEBUG 1)) to improve debuggability of interactive
2974 development, and to allow the use of the debug RETURN command in
2976 * an experimental implementation of the RETURN command for the
2977 debugger has been included. (thanks to Frederik Kuivinen)
2978 * fixed bug 62: constraints were not propagated into a loop.
2979 * fixed bug in embedded calls of SORT (reported and investigated by
2981 * fixed some bugs revealed by Paul Dietz' test suite:
2982 ** printing and reading of arrays with some dimensions having
2983 length 0 (thanks to Gerd Moellmann);
2984 ** BOA constructor with &AUX argument without a default value does
2985 not cause a type error;
2986 ** CONSTANTP now returns true for all self-evaluating objects.
2988 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2989 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2990 accessors that are related by inheritance, as specified in the
2991 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2992 Valtteri Vuorikoski)
2993 * The compiler is now able to inline functions that were defined in
2994 a complex lexical environment (e.g. inside a MACROLET).
2995 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2997 * Support for the upcoming FreeBSD-5.0 release has been included.
2998 (thanks to Dag-Erling Smorgrav)
2999 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3000 effect when it is not in a toplevel context.
3001 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3002 stand a better chance of being correct. (thanks to Gerd
3004 * fixed bug in COERCE, which now signals an error on coercing a
3005 rational to a bounded real type which excludes the expected
3007 * The compiler is now able to derive types more accurately from the
3008 COERCE and COMPILE functions.
3009 * fixed bug 223: functional binding is considered to be constant
3010 only for symbols in the CL package.
3011 * fixed bug 231: SETQ did not check the type of a variable being set
3012 (reported by Robert E. Brown)
3013 * A new optimization for MAKE-INSTANCE has been included, fixing
3014 various bugs (including relating to :ALLOCATION :CLASS slots and
3015 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3017 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3018 ** As required by ANSI, LOOP now disallows anonymous collection
3019 clauses such as COLLECT I in conjunction with aggregate boolean
3020 clauses such as THEREIS (= I 1);
3021 ** LOOP now signals an error when any variable is reused in the
3022 same loop (including the potentially useful construct analogous
3023 to WITH A = 1 WITH A = (1+ A);
3024 ** IT is only a special loop symbol within the first clause of a
3025 conditional loop clause;
3026 ** LOOP with a typed iteration variable over a hashtable now
3027 signals a type error iff it should.
3028 * fixed some other bugs revealed by Paul Dietz' test suite:
3029 ** FILE-STREAM now names the class previously known as FD-STREAM;
3030 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3031 argument) no longer signals an error;
3032 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3033 of the slot symbol, rather than using the current package
3034 ((:CONC-NAME "") continues to intern the slot's name in the
3036 * incremented fasl file version number, because of the incompatible
3037 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3038 of the new implementation of DEFINE-COMPILER-MACRO.
3040 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3041 * Support for building SBCL for MIPS platforms running in
3042 little-endian mode has now been checked in, and basic
3043 functionality on said platforms verified.
3044 * minor incompatible change: PCL now records the pathname of a file
3045 in which methods and the like are defined, rather than its
3047 * minor incompatible change: TRUENAME now considers the truename of
3048 a file naming a directory to be the pathname with :DIRECTORY
3049 component indicating that directory.
3050 * minor incompatible change: a NAMED clause in the extended form of
3051 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3052 reason for the previous behaviour is unclear.
3053 * more systematization and improvement of CLOS and MOP conformance
3054 in PCL (thanks to Gerd Moellman and Pierre Mai):
3055 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3057 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3058 primary methods with no specializers;
3059 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3061 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3062 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3063 FORWARD-REFERENCED-CLASSes; error reporting on
3064 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3066 ** SXHASH on CLOS instances now uses a slot internal to the
3067 instance to return different numbers on distinct instances,
3068 while preserving the same return value through invocations of
3070 ** DEFMETHOD signals errors when methods with longer incongruent
3071 lambda lists are added to generic functions;
3072 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3073 CLASS, as specified in AMOP;
3074 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3075 on the order returned by the primary method for classes of
3076 class STANDARD-CLASS;
3077 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3078 * fixed some bugs shown by Paul Dietz' test suite:
3079 ** DOLIST puts its body in TAGBODY;
3080 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3082 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3083 value producing form;
3084 ** if more variables are given to PROGV than values, extra
3085 variables are bound and made to have no value;
3086 ** NSUBSTITUTE on list arguments gets the right answer with
3088 ** ELT signals an error of type TYPE-ERROR when the index argument
3089 is not a valid sequence index;
3090 ** LOOP signals (at macroexpansion time) an error of type
3091 PROGRAM-ERROR when duplicate variable names are found;
3092 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3093 ** FUNCALL of special-operators now cause an error of type
3095 ** PSETQ now works as required in the presence of side-effecting
3096 symbol-macro places;
3097 ** NCONC accepts any object as its last argument;
3098 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3100 ** loop-for-as-package does not require a package to be explicitely
3102 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3104 * fixed bug 166: compiler preserves "there is a way to go"
3105 invariant when deleting code.
3106 * fixed bug 172: macro lambda lists with required arguments after
3107 &REST arguments now cause an error to be signalled. (thanks to
3109 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3110 bug. (thanks to Matthew Danish)
3111 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3113 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3114 arguments are lexically rebound. (thanks to Gerd Moellmann and
3116 * fixed bug 194: error messages are now more informative when there
3117 is no primary method applicable in a call to a generic
3118 function. (thanks to Gerd Moellmann)
3119 * fixed bug in command line argument checking (thanks to Julian
3121 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3122 (thanks to Matthew Danish)
3123 * incremented fasl file version number, because of the
3124 SXHASH-related changes in the layout of CLOS data structures
3126 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3127 * minor incompatible change: The runtime (the Unix executable named
3128 "sbcl") is now much pickier about the .core files it will load.
3129 Essentially it now requires .core files to descend from the same
3130 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3131 as the runtime does. (The intent is to prevent the crashes which
3132 can occur, and which can even be reported as mysterious failures,
3133 when people patch the sources or change the build parameters
3134 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3135 sbcl and .core files.)
3136 * fixed bug: VALUES-LIST is no longer optimized away.
3137 * fixed bug 142: The FFI conversion of C string values to Lisp
3138 string values no longer conses excessively. (thanks to Nathan
3139 Froyd porting Raymond Toy's fix to CMU CL)
3140 * began to systematize and improve MOP conformance in PCL (thanks to
3141 Nathan Froyd, Gerd Moellman and Pierre Mai):
3142 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3144 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3145 ** FINALIZE-INHERITANCE is now called on class finalization;
3146 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3147 argument precedence order.
3148 * fixed bug 202: The compiler no longer fails on functions whose
3149 derived types contradict their declared type.
3150 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3151 so it can be non-toplevel.
3152 * The fasl file version number has changed (because of the new
3153 implementation of DEFMACRO).
3154 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3155 safe code, that any length requirement by their type-specifier
3156 argument is valid. The exceptions to this are described in bug
3158 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3159 functions now check the types of their inputs as required by ANSI.
3160 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3161 introduced symbol is DECLAREd to be SPECIAL.
3162 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3163 * fixed bug: :COUNT argument to sequence functions may be negative
3164 * fixed bug: body of DO-SYMBOLS may contain declarations
3165 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3166 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3167 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3168 symbol macro only once
3169 * fixed printing of call frame when argument list is unavailable
3170 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3171 * compiler no longer signals WARNING on unknown keyword
3174 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3175 * A beta-quality port to the mips architecture running Linux,
3176 based on the old CMUCL backend, has been made. It has been tested
3177 on a big-endian kernel, and works sufficiently well to be able to
3178 rebuild itself; it has not been tested in little-endian mode.
3179 * fixed an inconsistency between gencgc.c and purify.c which made
3180 dumping/loading .core files unreliable
3181 * fixed bug 120a: The compiler now deals correctly with IFs where
3182 the consequent is the same as the alternative, instead of
3183 misderiving the return type. (thanks to Alexey Dejneka)
3184 * fixed bug 113: Logical pathnames are now dumpable (the logical
3185 host is resolved at load-time, throwing an error if it is not
3187 * fixed bug 174: FORMAT's error message is slightly clearer when a
3188 non-printing character is used in a format directive.
3189 * fixed several bugs in compiler checking of type declarations, i.e.
3190 violations of the Python "declarations are assertions" principle
3191 (thanks to Alexey Dejneka)
3192 * fixed several bugs in PCL's error checking (thanks to Gerd
3194 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3196 * fixed bug in compilation of functions as first class values
3197 (thanks to Antonio Martinez-Shotton)
3198 * The compiler's handling TYPE-ERRORs which it can prove will
3199 inevitably happen at runtime has been cleaned up and corrected
3200 in several ways. (thanks to Alexey Dejneka)
3201 * improved argument type checking for various basic arithmetic
3202 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3203 lavished on them in the past that they can be compiled in many
3204 ways in different special cases
3205 * fixed bug 181: compiler checks validity of user supplied type
3207 * cleaned up code flushing in optimization: Function calls which
3208 should signal errors for safety purposes (e.g. which ANSI says
3209 should signal errors when their arguments are of incorrect type)
3210 are no longer optimized away.
3211 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3212 * incremented fasl file version number, because changes in the
3213 implementation of sequence functions like COERCE caused
3214 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3215 in old inline expansions) to become undefined. (Actually these
3216 changes were later undone, so we might very well be binary
3217 compatible with 0.7.7 after all, but leaving the version number
3218 incremented seemed like the simplest and most conservative
3221 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3222 * An alpha-quality port to the parisc architecture running Linux,
3223 based on the old CMUCL backend, has been made. This, even more so
3224 than the other backends, should be considered still a work in
3225 progress; known problems include that the Linux kernel in 64-bit
3226 mode does not propagate the correct sigcontext structure to
3227 userspace, and consequently SBCL on a parisc64 kernel will not
3229 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3230 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3231 suppressed.) Also now that the compiler is looking at declarations
3232 in the environment, it checks optimization declarations as well,
3233 and suppresses inlining when (> DEBUG SPEED).
3234 * More fixes have been made to treatment of floating point exception
3235 treatment and other Unix signals. In particular, floating point
3236 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3237 * The detection and handling of control stack exhaustion (infinite
3238 or very deeply nested recursion) has changed. Stack exhaustion
3239 detection is now done by write-protecting pages at the OS level
3240 and applies at all optimization settings; when found, a
3241 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3242 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3243 be caught using IGNORE-ERRORS.
3244 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3245 correctly when transforming recursive LABELS functions to LETs.
3246 (thanks to Alexey Dejneka)
3247 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3248 that are names of constants or global variables.
3249 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3250 alien routines with docstrings.
3251 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3252 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3254 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3255 (thanks to Eric Marsden)
3256 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3257 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3258 * Bug fix: The SPARC backend can now compile functions involving
3259 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3260 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3261 to a functions expecting a PATHNAME-DESIGNATOR.
3262 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3263 lambda lists. (thanks to Alexey Dejneka)
3264 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3265 functions so that EXPORTing the name of the class doesn't cause
3266 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3267 to Antonio Martinez for reporting this)
3268 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3269 constant-folded without failing an assertion. (thanks to Einar
3270 Floystad Dorum for reporting this)
3271 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3272 types are now dealt with more correctly by the compiler.
3273 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3274 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3275 behaviour analogous to RENAME-FILE. This puts its behaviour more
3276 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3278 * The fasl file version number has changed again. (because of the
3279 bug fix involving the names of PCL MAKE-INSTANCE functions)
3281 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3282 * bug fix: Floating point exceptions are treated much more
3283 consistently on the x86/Linux and PPC/Linux platforms.
3284 * Array initialization with :INITIAL-ELEMENT is now much faster for
3285 cases when the compiler cannot open code the array creation, but
3286 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3287 array accesses have also seen a speed increase.
3288 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3289 specified. (This was at the root of some bad interactions between
3290 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3292 * bug fix: Internal error arguments for undefined functions are now
3293 computed correctly on the PPC/Linux platform.
3294 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3295 Raymond Toy's patch for CMU CL)
3296 * Support for the Solaris 9 operating environment has been included
3297 (thanks to Daniel Merritt)
3298 * A very ugly but hopefully complete draft of the missing FFI chapter
3299 of the manual has been created by reformatting the corresponding
3300 CMU CL manual chapter into (currently very ugly and incoherent)
3301 DocBook and bringing it up to date for SBCL behavior. Thus, the
3302 manual is now essentially complete, at least by my extreme
3303 once-and-only-once standards, whereby it's acceptable to refer to
3304 the doc strings of SB-EXT functions as the primary documentation.
3305 * The fasl file version number has changed again, due to cleanup of
3306 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3307 is no longer a static symbol.)
3309 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3310 * SBCL now builds with OpenMCL (version 0.12) as the
3311 cross-compilation host; also, more progress has been made toward
3312 bootstrapping under CLISP.
3313 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3315 * bug 158 fixed: The compiler can now deal with integer loop
3316 increments different from 1; fixing this turned out also to fix
3318 * bug 169 fixed: no more bogus warnings about using lexical bindings
3319 despite the presence of perfectly good SPECIAL declarations (thanks
3320 to David Lichteblau)
3321 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3322 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3323 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3325 * bug 180 fixed: Method combination specifications no longer ignore
3326 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3327 * bug fix: Structure type predicate functions now check their argument
3328 count as they should.
3329 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3330 correctly. (thanks to Pierre Mai)
3331 * minor incompatible change: The --noprogrammer option is deprecated
3332 in favor of the new --disable-debugger option, which is very similar.
3333 (The major difference is that it takes effect at a slightly different
3334 time at startup, causing handling of errors in --sysinit and
3335 --userinit files will be affected differently.) The
3336 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3337 been added to allow this functionality to be controlled from ordinary
3338 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3339 maintainers, who might want to run non-interactive scripts to
3340 build SBCL cores which will later be used interactively.)
3341 * minor incompatible change: The LOAD function no longer, when given
3342 a wild pathname to load, loads all files matching that pathname.
3343 Instead, an error of type FILE-ERROR is signalled.
3345 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3346 * bug 147 fixed: The compiler preserves its block link/count
3347 invariants more correctly now so that it doesn't crash. (thanks
3349 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3351 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3352 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3353 no-value-for-this-character as NIL (as specified by ANSI).
3354 * HOST-NAMESTRING on physical pathnames now returns a string that is
3355 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3356 (thanks to Christophe Rhodes)
3357 * The Alpha port handles icache flushing more correctly. (thanks to
3359 * More progress has been made toward bootstrapping under CLISP. (thanks
3360 to Christophe Rhodes)
3361 * The fasl file format has changed again, because dynamic loading
3362 on OpenBSD (which has non-ELF object files) motivated some cleanups
3363 in the way that foreign symbols are transformed and passed around.
3364 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3365 is no longer treated as whitespace by the reader, but instead as
3366 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3367 |A
\7fB|, instead of A as it used to.
3369 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3370 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3371 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3372 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3373 this as of 0.7.1.45, but was left out of the previous news section
3374 (thanks to Dan Barlow)
3375 * SBCL now runs on the Solaris operating system on SPARC architectures
3376 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3377 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3378 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3379 * SPARC backend cleanups, allowing builds of cores optimized for V8
3380 and V9 SPARCS, and also emission of code targeted to a particular
3381 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3383 * SBCL is closer to bootstrapping under CLISP, thanks to various
3384 fixes by Christophe Rhodes.
3385 * The fasl file format has changed again, to allow the compiler's
3386 INFO database to support symbol macros.
3387 * The user manual (in doc/) is formatted into HTML more nicely.
3388 (thanks to coreythomas)
3389 * The system is smarter about SUBTYPEP relationships, especially
3390 those involving NOT types (including types such as ATOM which are
3391 represented internally using NOT types). Thus SUBTYPEP is less
3392 likely to return (VALUES NIL NIL) in general, and in particular
3393 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3395 * The fasl file format has changed again, because the internal
3396 representation of types now includes a new slot to support the new
3397 SUBTYPEP-of-NOT-types logic.
3398 * (not a change in the main branch of SBCL, but a related prototype
3399 which can hopefully be merged into the main branch of SBCL in the
3400 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3401 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3402 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3403 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3404 dispatch macro character combinations. (thanks to Alexey Dejneka)
3405 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3406 that superficially look like logical namestrings correctly.
3407 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3409 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3410 default supplied-p) for &optional and &key arguments. (thanks to
3413 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3414 * incompatible change: The compiler is now less aggressive about
3415 tail call optimization, doing it only when (> SPACE DEBUG) or
3416 (> SPEED DEBUG). (This is an incompatible change because there are
3417 programs which relied on the old CMU-CL-style behavior to optimize
3418 away their unbounded recursion which will now die of stack overflow.)
3419 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3420 for non-GENCGC systems has been increased to 20M (since that
3421 seems much closer to the likely performance optimum for modern
3422 systems than the old 4M value was)
3423 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3424 and *DEBUG-PRINT-LEVEL*
3425 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3426 of CMU CL's support for SPARC, and various endianness and other
3427 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3428 * new syntactic sugar for the Unix command line: --load foo.bar is now
3429 an alternate notation for --eval '(load "foo.bar")'.
3431 ** The system now detects stack overflow and handles it gracefully,
3432 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3433 optimization settings. (This is a good thing in general, and
3434 its introduction in this version should be particularly timely
3435 for anyone whose code fails because of suppression of tail
3437 ** The system now hunts for the C variable "environ" in a more
3438 devious way, to avoid segfaults when the C library version differs
3439 between compile time and run time. (thanks to Christophe Rhodes)
3440 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3441 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3442 ** The compiler no longer issues bogus style warnings for undefined
3443 classes in the same source file as the DEFCLASSes which defined
3444 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3446 ** fixes in CONDITION class precedence list for undefined function
3447 errors (thanks to Alexei Dejneka)
3448 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3449 correctly. (thanks to Dan Barlow)
3450 ** portability fixes aiming at bootstrapping under CLISP (thanks
3451 to Dave McDonald and Christophe Rhodes)
3452 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3453 ** fixes in type translation and and type inference (thanks to
3455 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3456 ** various fixes in the new ports (thanks to Dan Barlow)
3457 * several changes related to debugging:
3458 ** suppression of tail recursion, as noted above
3459 ** stack overflow detection, as noted above
3460 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3461 is now the default. (For some time encapsulation has been more
3462 reliable than the breakpoint-based :ENCAPSULATE NIL
3463 implementation, at least on X86 systems; and I just noticed that
3464 encapsulation also seems closer to the spirit of the ANSI
3467 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3469 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3470 up properly again. (There was a packaging bug in 0.7.0 which
3471 left their definitions in SB-SYS::LOAD-FOREIGN and
3472 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3473 vital for most things which interface to C-level interfaces,
3474 like extensions working with sockets or databases or
3475 Perl-compatible regexes or whatever, and the need to fix
3476 this bug is the main reason that 0.7.1 was released so
3478 ** DEFGENERIC is now choosier about the methods it redefines, so that
3479 reLOADing a previously-LOADed file containing DEFGENERICs does
3480 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3481 cycle now works as it should. (thanks to Alexey Dejneka)
3482 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3483 fixed by Christophe Rhodes. (He actually submitted this patch
3484 months ago, and I delayed until after 0.7.0.)
3485 ** Bug 111 (internal compiler confusion about runtime checks on
3486 FUNCTION types) was fixed by Alexey Dejneka.
3487 * Some internal cleanups (getting rid of variables which aren't
3488 needed now that the byte interpreter is gone) caused the fasl
3489 file format number to change again.
3491 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3492 * major incompatible change: The default fasl file extension, i.e. the
3493 default extension for files produced by COMPILE-FILE, has changed
3494 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3496 ** There are many changes in the implementation of the compiler.
3497 SBCL is now essentially a compiler-only implementation of ANSI
3498 Common Lisp. EVAL still "interprets" a few special cases, but
3499 almost all the interesting cases are handled by creating
3500 a LAMBDA expression, calling COMPILE on it, then calling
3501 FUNCALL on the result.
3502 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3503 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3504 Since the code is newer, there might still be some new bugs
3505 (though not as many as before Martin Atzmueller's fixes:-). But
3506 the new code is substantially simpler and clearer, and hopefully
3507 any remaining bugs will be simpler, less fundamental, and more
3508 fixable then the bugs in the old code.
3509 ** The revised compiler is still a little unsteady on its feet.
3511 *** The debugging information it produces (particularly the names
3512 of FUNCTION objects) is sometimes much less useful than what
3513 the old compiler produced.
3514 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3515 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3516 within a MACROLET) has been temporarily weakened.
3517 ** There are new compiler optimizations for various functions:
3518 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3519 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3520 *** the math functions TRUNCATE, FLOOR, and CEILING
3521 *** the function-of-all-trades COERCE
3522 Mostly these should be transparent, but there's one
3523 potentially-annoying problem (bug 117): when the compiler
3524 inline-expands a function and does type analysis on the result,
3525 it can create control paths which have type mismatches, and
3526 when it can't prove that those control paths aren't taken,
3527 it will issue WARNINGs about the type mismatches. This is
3528 a particular problem in practice for the new sequence functions.
3529 It's not clear how this should be fixed, and for now, a
3530 workaround is given in the entry for 117 in the BUGS file.
3531 ** (Because of the interaction between the two previous items --
3532 occasional inlining problems and new inline expansions -- some
3533 of the new sequence function optimizations won't really kick in
3534 completely until debugging information, and then inlining, are
3535 straightened out in some future version.)
3536 * minor incompatible changes:
3537 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3538 DIRECTORY no longer implicitly promotes NIL slots of its
3539 pathname argument to :WILD. In particular, when you ask for the
3540 contents of a directory (which you used to be able to do without
3541 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3542 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3543 ** changes in behavior that ANSI explicitly defines to be
3544 implementation dependent:
3545 *** The new compiler-only implementation still conforms with ANSI,
3546 but acts a little different than before. Besides the obvious
3547 changes in performance tradeoffs (that the cost per form passed
3548 to EVAL has gone up, and the cost per form executed by EVAL
3549 has gone down), the behavior of the system changes a little
3550 because there are no longer any interpreted function objects.
3551 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3552 e.g. doing COMPILE on the output of interactive DEFUN is
3554 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3556 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3557 has changed from (:CL) to NIL.
3558 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3559 e.g. #\Newline and #\Tab, don't have names specified in the
3560 ANSI Common Lisp standard, is now based on their ASCII symbolic
3561 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3562 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3563 are no longer used for output.
3564 ** changes in internal implementation constants:
3565 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3566 4 million. (If your application spends a lot of time GCing and
3567 you have a lot of RAM, you might want to experiment with
3568 increasing it even more.)
3569 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3570 However, almost all old code should still continue to work without
3571 immediate update, as SB-C-CALL is now a (deprecated) nickname
3573 ** Old operator names in the style DEF-FOO are now deprecated in
3574 favor of new corresponding names DEFINE-FOO, for consistency with
3575 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3576 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3577 internal symbols, but a few supported extensions like
3578 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3579 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3580 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3581 etc. as you get deeper into recursive calls to the debugger
3582 command loop, instead of the old "5]", "5]]", "5]]]"
3583 sequence. (I was motivated to do this when squabbles between
3584 ILISP and SBCL left me very deeply nested in the debugger. In the
3585 short term, this change will probably provoke more ILISP/SBCL
3586 squabbles, but hopefully it will be an improvement in the long run.)
3587 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3588 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3589 function, since declaiming return types involving aliens is
3590 (1) annoyingly messy to do by hand and (2) vital to efficient
3591 compilation of code which calls such functions.
3592 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3593 longer reexported by the SB-EXT package. They're solely useful
3594 for alien code, so it seems more logical that you should get
3595 them from the SB-ALIEN package, not in SB-EXT.
3596 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3597 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3598 features. Instead, the code that they used to control is always
3599 built into the system.
3600 * many other bug fixes
3601 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3602 advantage of the new EVAL-WHEN stuff and to clean them up in
3603 general, and they are now more ANSI-compliant in a number of
3604 ways. Martin Atzmueller is responsible for a lot of this.
3605 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3607 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3608 *** correct ERROR type for various file operations
3609 *** some fixes for Lisp streams
3610 *** DEFMETHOD syntax checking
3611 *** changing old weird representation of debug information as
3612 strings (which, among their other deficiencies, don't transform
3613 correctly when you rename packages, and don't change their
3614 print representation when you change things like *PACKAGE*
3615 and *PRINT-LENGTH*) to symbols and lists of symbols
3616 He also made several improvements and fixed several bugs in DESCRIBE.
3617 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3619 *** misbehavior of WRITE-STRING/WRITE-LINE
3620 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3621 and several other LOOP problems as well
3622 *** DIRECTORY when similar filenames are present
3623 *** DEFGENERIC with :METHOD options
3624 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3625 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3626 *** argument ordering in FIND with :TEST option
3627 *** mishandled package designator argument in APROPOS-LIST
3628 *** various problems in the backquote readmacro
3629 *** a bug in APROPOS
3630 *** probably some others that I'm not describing very well here,
3631 since the CVS log documents them by reference to sbcl-devel
3632 messages, and the SourceForge archives aren't working well.:-(
3633 ** Dan Barlow improved the Alpha port (and is making progress on the
3634 PPC port, for those of you who think different).
3635 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3636 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3637 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3638 continues to work on the SPARC port (for those of you in a position
3639 to look down upon our little PC-compatible boxes from a great height).
3640 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3641 and uses that copy, rather than the current dynamic value, when
3642 it's trying to decide whether to truncate output. Thus e.g.
3643 (let ((*print-lines* 50))
3644 (pprint-logical-block (stream nil)
3646 (let ((*print-lines* 8))
3647 (print (aref possiblybigthings i) stream)))))
3648 should now truncate the logical block only at 50 lines, instead of
3649 often truncating it at 8 lines, as it did before.
3650 * The doc/cmucl/ directory, containing old CMU CL documentation
3651 from the time of the fork, is no longer part of the base system.
3652 SourceForge has shut down its anonymous FTP service, and with it
3653 my original plan for distributing the old CMU CL documentation
3654 there. For now, if you need these files you can download an old
3655 SBCL source release and extract them from it.
3656 * The fasl file version number changed again, for dozens of reasons,
3657 some of which are apparent above.
3659 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3660 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3661 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3662 patch, so that DISASSEMBLE output is much nicer.
3663 * The code in the SB-PROFILE package now seems reasonably stable.
3664 I still haven't decided what the final interface should look like
3665 (I'd like PROFILE to interact cleanly with TRACE, since both
3666 facilities use function encapsulation) but if you have a need
3667 for profiling now, you can probably use it successfully with
3668 the current CMU-CL-style interface.
3669 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3670 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3671 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3672 link now returns the dangling link itself, and for similar
3673 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3674 link itself. (In these cases the old code signalled an error and
3675 looped endlessly, respectively.) Thus, DIRECTORY now works even
3676 in the presence of dangling and cyclic symbolic links.
3677 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3678 is now a supported extension again, since the consensus on
3679 sbcl-devel was that it can be useful for ordinary development
3680 work, not just for debugging SBCL itself.
3681 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3682 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3683 that currently-defined functions might be redefined later with
3684 different return types.
3685 * Hash tables can be printed readably, as inspired by CMU CL code
3686 of Eric Marsden and SBCL code of Martin Atzmueller.
3687 * better error handling in CLOS method combination, thanks to
3688 Martin Atzmueller porting Pierre Mai's CMU CL patches
3689 * more overflow fixes for >16Mbyte I/O buffers
3690 * A bug in READ has been fixed, so that now a single Ctrl-D
3691 character suffices to cause end-of-file on character streams.
3692 In particular, now you only need one Ctrl-D at the command
3693 line (not two) to exit SBCL.
3694 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3696 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3697 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3698 does the right thing.
3699 * The implementation of some type tests, especially for CONDITION
3700 types, is now tidier and maybe faster, due to CMU CL code
3701 originally by Douglas Crosher, ported by Martin Atzmueller.
3702 * Some math functions have been fixed, and there are new
3703 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3704 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3705 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3706 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3707 likely to be built into sbcl-0.7.0.)
3708 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3709 CL, ported to SBCL by Martin Atzmueller)
3710 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3711 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3712 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3713 * There's a new slam.sh hack to shorten the edit/compile/debug
3714 cycle for low-level changes to SBCL itself, and a new
3715 :SB-AFTER-XC-CORE target feature to control the generation of
3716 the after-xc.core file needed by slam.sh.
3717 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3718 COMPILE-FILE is no longer supported, so that now every function
3719 gets an entry point, so that block compilation looks a little
3720 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3721 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3722 returns the number of bytes consed since the system started,
3723 rather than the number consed since the first time the function
3724 was called. (The new definition parallels ANSI functions like
3725 CL:GET-INTERNAL-RUN-TIME.)
3726 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3727 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3728 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3729 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3730 * Fasl file version numbers are now independent of the target CPU,
3731 since historically most system changes which required version
3732 number changes have affected all CPUs equally. Similarly,
3733 the byte fasl file version is now equal to the ordinary
3736 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3737 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3738 is no longer recognized. I apologize for this, because it was
3739 listed in SB-EXT as a supported extension, but I found that
3740 its existing behavior was poorly specified, as well as incorrectly
3741 specified, and it looked like too much of a mess to straighten it
3742 out. I have enough on my hands trying to get ANSI stuff to work..
3743 * many patches ported from CMU CL by Martin Atzmueller, with
3744 half a dozen bug fixes in pretty-printing and the debugger, and
3745 half a dozen others elsewhere
3746 * fixed bug 13: Floating point infinities are now supported again.
3747 They might still be a little bit flaky, but thanks to bug reports
3748 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3749 as flaky as they were.
3750 * The --noprogrammer command line option is now supported. (Its
3751 behavior is slightly different in detail from what the old man
3752 page claimed it would do, but it's still appropriate under the
3753 same circumstances that the man page talks about.)
3754 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3755 are now supported, and enabled by default. Thus, the compiler can
3756 handle many floating point and complex operations much less
3757 inefficiently. (Thus e.g. you can implement a complex FFT
3759 * The compiler now detects type mismatches between DECLAIM FTYPE
3760 and DEFUN better, and implements CHECK-TYPE more correctly, and
3761 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3762 thanks to patches from Martin Atzmueller.
3763 * various fixes to make the cross-compiler more portable to
3764 ANSI-conforming-but-different cross-compilation hosts (notably
3765 Lispworks for Windows, following bug reports from Arthur Lemmens)
3766 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3767 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3768 fixed thanks to Pierre Mai's CMU CL patches.
3769 * fixes to keep the system from overflowing internal counters when
3770 it tries to use i/o buffers larger than 16M bytes
3771 * fixed bug 45a: Various internal functions required to support
3772 complex special functions have been merged from CMU CL sources.
3773 (When I was first setting up SBCL, I misunderstood a compile-time
3774 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3775 * improved support for type intersection and union, fixing bug 12
3776 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3777 more obscure bugs as well
3778 * some steps toward byte-compiling non-performance-critical
3779 parts of the system, courtesy of patches from Martin Atzmueller
3780 * Christophe Rhodes has made some debian packages of sbcl at
3781 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3782 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3783 stable, but are nonetheless usable. When he's ready, I'd be happy
3784 to add them to the SourceForge "File Releases" section. (And if
3785 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3786 * new fasl file format version number (because of changes in
3787 internal representation of (OR ..) types to accommodate the new
3788 support for (AND ..) types, among other things)
3790 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3791 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3793 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3795 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3796 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3797 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3798 * DESCRIBE now works on structure objects again.
3799 * Most function call argument type mismatches are now handled as
3800 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3801 know whether the function will be redefined before the call is
3802 executed. (The compiler could flag local calls with full WARNINGs,
3803 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3804 it doesn't keep track of enough information to know whether calls
3805 are local in this sense.)
3806 * Compiler output is now more verbose, with messages truncated
3807 later than before. (There should be some supported way for users
3808 to override the default verbosity, but I haven't decided how to
3809 provide it yet, so this behavior is still controlled by the internal
3810 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3811 src/compiler/ir1util.lisp.)
3812 * Fasl file format version numbers have increased again, because
3813 support for the Gray streams extension changes the layout of the
3814 system's STREAM objects.
3815 * The Gray subclassable streams extension now works, thanks to a
3816 patch from Martin Atzmueller.
3817 * The full LOAD-FOREIGN extension (not just the primitive
3818 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3819 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3820 but like most other programs, it defaults to copying the Unix
3821 environment from the original process instead of starting the
3822 new process in an empty environment.
3823 * Extensions which manipulate the Unix environment now support
3824 an :ENVIRONMENT keyword option which doesn't smash case or
3825 do other bad things. The CMU-CL-style :ENV option is retained
3826 for porting convenience.
3827 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3828 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3830 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3832 * A patch from Martin Atzmueller seems to have solved the SIGINT
3833 problem, and as far as we know, signal-handling now works cleanly.
3834 (If you find any new bugs, please report them!)
3835 * The system no longer defaults Lisp source file names to types
3836 ".l", ".cl", or ".lsp", but only to ".lisp".
3837 * The compiler no longer uses special default file extensions for
3838 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3839 seems to expect a single default extension for all compiled code,
3840 and there's no compelling reason to try to stretch the standard
3841 to allow two different extensions.) Instead, byte-compiled files
3842 default to the same extension as native-compiled files.
3843 * Fasl file format version numbers have increased again, because
3844 a rearrangement of internal implementation packages made some
3845 dumped symbols in old fasl files unreadable in new cores.
3846 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3847 many fewer weird special cases.
3848 * Bug #17 (differing COMPILE-FILE behavior between logical and
3849 physical pathnames) has been fixed, and some related misbehavior too,
3850 thanks to a patch from Martin Atzmueller.
3851 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3852 by Tim Moore, ported to SBCL by Martin Atzmueller.
3853 * Martin Atzmueller fixed several filesystem-related problems,
3854 including bug #36, in part by porting CMU CL patches, which were
3855 written in part by Paul Werkowski.
3856 * More compiler warnings in src/runtime/ are gone, thanks to
3857 more patches from Martin Atzmueller.
3858 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3861 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3863 * DESCRIBE now works on CONDITION objects.
3864 * The debugger now handles errors which arise when trying to print
3865 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3867 * The build system now uses an additional file, customize-target-features.lisp,
3868 to allow local modifications to the target *FEATURES* list. (The point of
3869 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3870 debugging features enabled, without having to worry about propagating it
3871 into everyone's system when I do a "cvs update".) When no
3872 customize-target-features.lisp file exists, the target *FEATURES* list
3873 should be constructed the same way as before.
3874 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3875 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3876 warn about behavior which is undefined under the ANSI spec. Note: This
3877 is specified by ANSI, but it's not very popular with programmers.
3878 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3879 macro in the SBCL sources for an example of a workaround which you
3880 might use to make portable ANSI-standard code which does what you want.
3881 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3882 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3883 when it's used as a non-toplevel form. (This is required in order
3884 to implement the DEFCONSTANT-EQX macro.)
3885 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3886 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3887 funny things, due to bugs in the implementation of EVAL-WHEN
3888 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3889 non-toplevel DEFCONSTANTs are uncommon.)
3890 * The core file version number and fasl file version number have been
3891 incremented, because the old noncompliant DEFCONSTANT behavior involved
3892 calling functions which no longer exist, and because I also took the
3893 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3894 * fixed bug 1 (error handling before read-eval-print loop starts), and
3895 redid debugger restarts and related debugger commands somewhat while
3897 ** The QUIT debugger command is gone, since it did something
3898 rather different than the SB-EXT:QUIT command, and since it never
3899 worked properly outside the main toplevel read/eval/print loop.
3900 Invoking the new TOPLEVEL restart provides the same functionality.
3901 ** The GO debugger command is also gone, since you can just invoke
3902 the CONTINUE restart directly instead.
3903 ** The TOP debugger command is also gone, since it's redundant with the
3904 FRAME 0 command, and since it interfered with abbreviations for the
3906 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3908 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3909 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3910 some porting work by Martin Atzmueller)
3911 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3912 with a boatload of patches which he ported to SBCL. Now that those
3914 ** The system tries to make sure that its low-priority messages
3915 are prefixed by semicolons, to help people who like to use
3916 syntax highlighting in their ILISP buffer. (This patch
3917 was originally due to Raymond Toy.)
3918 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3919 patches originally written by Raymond Toy.
3920 ** The compiler understands coercion between single-value and
3921 multiple-VALUES type expressions better, getting rid of some very
3922 weird behavior, thanks to patches originally by Robert MacLachlan
3923 and Douglas Crosher.
3924 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3925 lambda lists, thanks to a patch originally by Pierre Mai.
3926 ** The system no longer bogusly warns about "abbreviated type
3928 ** The compiler gets less confused by inlining and RETURN-FROM,
3929 thanks to some patches originally by Tim Moore.
3930 ** The system no longer hangs when dumping circular lists to fasl
3931 files, thanks to a patch originally from Douglas Crosher.
3932 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3933 undefined function error.
3934 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3935 in structure slot initforms) for now, documented workaround instead:-|
3936 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3937 * fixed bug 5: added stubs for various Gray stream functions called
3938 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3939 installed, at least appropriate type errors are generated
3940 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3941 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3942 consistently in DEFMETHOD forms.
3943 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3944 it doesn't seem to affect SBCL after all
3945 * The C runtime system now builds with better optimization and many
3946 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3948 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3950 * The system is now under CVS at SourceForge (instead of the
3951 CVS repository on my home machine).
3952 * The new signal handling code has been tweaked to treat register
3953 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3954 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3955 downstream, e.g. in debug-int.lisp, has implicit dependencies
3956 on the unsignedness of integer representation of machine words,
3957 and that caused the system to bomb out with infinite regress
3958 when trying to recover from type errors involving signed values,
3959 e.g. (BUTLAST '(1 2 3) -1).)
3960 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3961 (This was one of the bugs Peter Van Eynde reported back in July.)
3962 * The system now uses code inspired by Colin Walters' O(N)
3963 implementation of MAP (from the cmucl-imp@cons.org mailing
3964 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3965 inline the MAP operation, and there is more than one
3966 sequence argument to the MAP call (so that it can't just
3967 do ETYPECASE once and for all based on the type of the
3968 single sequence argument). (The old non-inline implementation
3969 of the general M-argument sequence-of-length-N case required
3970 O(M*N*N) time when any of the sequence arguments were LISTs.)
3971 * The QUIT :UNIX-CODE keyword argument has been renamed to
3972 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3973 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3975 * Raymond Wiker's patches to port dynamic loading from Linux to
3976 FreeBSD have been added.
3977 * The BUGS file is now more nearly up to date, thanks in large part
3978 to Martin Atzmueller's review of it.
3979 * The debugger now flushes standard output streams before it begins
3980 its output ("debugger invoked" and so forth).
3981 * The core version number and fasl file version number have both
3982 been incremented, because of incompatible changes in the layout
3984 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3985 used to not be called for a saved Lisp image.)
3986 * Martin Atzmueller's version of a patch to fix a compiler crash,
3987 as posted on sbcl-devel 13 September 2000, has been installed.
3988 * Instead of installing Martin Atzmueller's patch for the
3989 compiler transform for SUBSEQ, I deleted the compiler transform,
3990 and transforms for some similar consing operations.
3991 * A bug in signal handling which kept TRACE from working on OpenBSD
3993 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3994 away by constant folding
3995 * The system now defines its address space constants in one place
3996 (in the Lisp sources), and propagates them automatically elsewhere
3997 (through GENESIS and the sbcl.h file). Therefore, patching the
3998 address map is less unnecessarily tedious and error-prone. The
3999 Lisp names of address space constants have also been systematized.
4000 * CVS tags like dollar-Header-dollar have been removed from
4001 the sources, because they have never saved me trouble and
4002 they've been source of trouble working with patches and other
4003 diff-related operations.
4004 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4005 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4007 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4009 * The system has been ported to OpenBSD.
4010 * The system now compiles with a simple "sh make.sh" on the systems
4011 that it's supported on. I.e., now you no longer need to tweak
4012 text in the target-features.lisp-expr and symlinks in src/runtime/
4013 by hand, the make.sh takes care of it for you.
4014 * The system is no longer so grossly inefficient when compiling code
4015 involving vectors implemented as general (not simple) vectors (VECTOR T),
4016 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4017 which dares to use the various sequence functions on non-simple
4018 vectors, takes less of a performance hit.
4019 * There is now a primitive type predicate VECTOR-T-P
4020 to test for the (VECTOR T) type, so that e.g.
4021 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4022 can now be compiled with some semblance of efficiency. (The old code
4023 turned the type declaration into a full call to %TYPEP at runtime!)
4024 * AREF on (VECTOR T) is still not fast, since it's still compiled
4025 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4026 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4027 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4028 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4029 without making full calls to SUBTYPEP at runtime.
4030 (Some analogous efficiency issues for non-simple vectors specialized to
4031 element types other than T, or for non-simple multidimensional arrays,
4032 have not been addressed. They could almost certainly be handled the
4033 same way if anyone is motivated to do so.)
4034 * The changes in array handling break binary compatibility, so
4035 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4036 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4037 instead of (VALUES T T).
4038 * By following the instructions that Dan Barlow posted to sbcl-devel
4039 on 2 July 2000, I was able to enable primitive dynamic object
4040 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4041 functionality is not implemented (since it calls ld to resolve
4042 library references automatically, requiring RUN-PROGRAM for its
4043 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4044 try to resolve library references) is now supported.
4045 * The system now flushes the standard output streams when it terminates,
4046 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4047 them at several other probably-convenient times, e.g. in each pass of
4048 the toplevel read-eval-print loop, and after evaluating a form given
4049 as an "--eval" command-line option. (These changes were motivated by a
4050 discussion of stream flushing issues on cmucl-imp in August 2000.)
4051 * The source transform for TYPEP of array types no longer assumes
4052 that an array whose element type is a not-yet-defined type
4053 is implemented as an array of T, but instead punts, so that the
4054 type will be interpreted at runtime.
4055 * There is now some support for cross-compiling in make.sh: each of
4056 the phases of make.sh has its own script. (This should be transparent
4057 to people doing ordinary, non-cross-compile builds.)
4058 * Since my laptop doesn't have hundreds of megabytes of memory like
4059 my desktop machine, I became more motivated to do some items on
4060 my to-do list in order to reduce the size of the system a little:
4061 ** Arrange for various needed-only-at-cold-init things to be
4062 uninterned after cold init. To support this, those things have
4063 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4064 symbols with such names are now uninterned after cold init).
4065 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4066 fasl files for cold load.
4067 ** Remove the old compiler structure pooling code (which used to
4068 be conditional on the target feature :SB-ALLOC) completely.
4069 ** Redo the representation of some data in cold init to be more compact.
4070 (I also looked into supporting byte compiled code at bootstrap time,
4071 which would probably reduce the size of the system a lot, but that
4072 looked too complicated, so I punted for now.)
4073 * The maximum signal nesting depth in the src/runtime/ support code has
4074 been reduced from 4096 to 256. (I don't know any reason for the very
4075 large old value. If the new smaller value turns out to break something,
4076 I'll probably just bump it back up.)
4077 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4079 * Many, many bugs reported by Peter Van Eynde have been added to
4080 the BUGS list; some have even been fixed.
4081 * While enabling dynamic object file loading, I tried to make the
4082 code easier to understand, renaming various functions and variables
4083 with less ambiguous names, and changing some function calling
4084 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4085 * While trying to figure out how to do the OpenBSD port, I tried to
4086 clean up some of the code in src/runtime/. In particular, I dropped
4087 support for non-POSIX signal handling, added various comments,
4088 tweaked the code to reduce the number of compilation warnings, and
4089 renamed some files to increase consistency.
4090 * To support the new automatic configuration functionality in make.sh,
4091 the source file target-features.lisp-expr has been replaced with the
4092 source file base-target-features.lisp-expr and the machine-generated
4093 file local-target-features.lisp-expr.
4094 * fixed a stupid quoting error in make.sh so that using CMU CL
4095 "lisp -batch" as cross-compilation host works again
4097 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4099 * DESCRIBE no longer tries to call itself recursively to describe
4100 bound/fbound values, so that it no longer fails on symbols which are
4101 bound to themselves (like keywords, T, and NIL).
4102 * DESCRIBE now works on generic functions.
4103 * The printer now prints less-screwed-up representations of closures
4104 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4105 * A private symbol is used instead of the :EMPTY keyword previously
4106 used to mark empty slots in hash tables. Thus
4107 (DEFVAR *HT* (MAKE-HASH-TABLE))
4108 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4109 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4110 now does what ANSI says that it should. (You can still get
4111 similar noncompliant behavior if bang on the hash table
4112 implementation with all the symbols you get back from
4113 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4114 This breaks binary compatibility, since tests for equality to
4115 :EMPTY are wired into things like the macroexpansion of
4116 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4118 * There's now a minimal placeholder implementation for CL:STEP,
4119 as required by ANSI.
4120 * An obscure bug in the interaction of the normal compiler, the byte
4121 compiler, inlining, and structure predicates has been patched
4122 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4123 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4125 * Missing ordinary arguments in a macro call are now detected even
4126 when the macro lambda list contains &KEY or &REST.
4127 * The debugger no longer complains about encountering the top of the
4128 stack when you type "FRAME 0" to explicitly instruct it to go to
4129 the top of the stack. And it now prints the frame you request even
4130 if it's the current frame (instead of saying "You are here.").
4131 * As specified by ANSI, the system now always prints keywords
4132 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4134 * The default initial SIZE of HASH-TABLEs is now smaller.
4135 * Type information from CLOS class dispatch is now propagated
4136 into DEFMETHOD bodies, so that e.g.
4137 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4139 is now basically equivalent to
4140 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4141 (DECLARE (TYPE SINGLE-FLOAT X))
4143 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4144 operation, without having to do run-time type dispatch.
4145 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4146 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4147 * Since I don't seem to be making big file reorganizations very often
4148 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4149 is overflowing my ability to conveniently back them up), I've finally
4150 checked the system into CVS. (The CVS repository is on my home system,
4151 not at SourceForge -- putting it on SourceForge might come later.)
4152 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4153 high-level GC-NOTIFY-FOO functions send their output. (There's
4154 still very little control of where low-level verbose GC functions
4155 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4156 less than it used to -- the GC-NOTIFY-FOO functions are now under
4157 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4158 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4159 in only one place in the source code, and propagates it automatically
4160 everywhere that it's needed. Thus e.g. when I bump the version from
4161 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4162 * The C source files now include boilerplate legalese and documentation
4163 at the head of each file (just as the Lisp source files already did).
4164 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4165 to his page will be replaced with a link to his new CLiki service.
4167 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4169 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4170 * The build process now looks for GNU make under the default name "gmake",
4171 instead of "make" as it used to. If GNU make is not available as "gmake"
4172 on your system, you can change this default behavior by setting the
4173 GNUMAKE environment variable.
4174 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4175 can build without error under CMU CL.
4177 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4179 * There is now a partial SBCL user manual (with some new text and some
4180 text cribbed from the CMU CL manual).
4181 * The beginnings of a profiler have been added (starting with the
4182 CMU CL profiler and simplifying and cleaning up). Eventually the
4183 main interface should be through the TRACE macro, but for now,
4184 it's still accessed through vaguely CMU-CL-style functions and macros
4185 exported from the package SB-PROFILE.
4186 * Some problems left over from porting CMU CL to the new
4187 cross-compilation bootstrap process have been cleaned up:
4188 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4189 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4190 part when getting rid of the compiler *BACKEND* stuff.)
4191 ** The value of *NULL-TYPE* was screwed up, because it was
4192 being initialized before the type system knew the final
4193 definition of the 'NULL type. This screwed up several key
4194 optimizations in the compiler, causing inefficiency in all sorts
4195 of places. (I found it because I wanted to understand why
4196 GET-INTERNAL-RUN-TIME was consing.)
4197 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4198 PROCLAIM FTYPE information. Unfortunately this broke binary
4199 compatibility again, since now the forms output by DEFGENERIC
4200 to refer to functions which didn't exist in 0.6.3.
4201 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4202 can use the new (as of 0.6.3) transform for SOME into MAP into
4204 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4205 values to (INTEGER 0 1000000), so that the time code will no longer
4206 occasionally get blown up by Linux returning 1000000 microseconds
4207 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4208 its output conform to the ANSI spec. (Alas, this makes its output
4209 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4210 * A full call to MAP NIL with a single sequence argument no longer conses.
4211 * fixes to problems pointed out by Martin Atzmueller:
4212 * The manual page no longer talks about multiprocessing as though
4213 it were currently supported.
4214 * The ILISP support patches have been removed from the distribution,
4215 because as of version 5.10.1, ILISP now supports SBCL without us
4216 having to maintain patches.
4217 * added a modified version of Raymond Toy's recent CMU CL patch for
4218 EQUALP comparison of HASH-TABLE
4220 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4222 * The system still can't cross-compile itself with
4223 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4224 entails), but at least it can compile more of itself that way
4225 than it used to be able to, and various buglets which were uncovered
4226 by trying to cross-compile itself that way have now been fixed.
4227 * This release breaks binary compatibility again. This time
4228 at least I've incremented the FASL file format version to 2, so that the
4229 problem can be detected reliably instead of just causing weird errors.
4230 * various new style warnings:
4231 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4232 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4233 ** using the lexical binding of a variable named in the *FOO* style
4234 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4235 as specified by ANSI.
4236 * *RANDOM-STATE* is no longer automatically initialized from
4237 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4238 default behavior of the system is to repeat its behavior every time
4239 it's run. If you'd like to change this behavior, you can always
4240 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4241 old convention there was no comparably easy way to get the system to
4242 repeat its behavior every time it was run.
4243 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4244 FTYPE declarations has been removed, in favor of their ANSI
4245 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4246 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4247 the types of their sequence arguments can be determined at compile time.
4248 This is done through a new open code expansion for MAP which eliminates
4249 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4250 argument types can be determined at compile time.
4251 * The optimizer now transforms COERCE into an identity operation when it
4252 can prove that the coerced object is already of the correct type. (This
4253 can be a win for machine generated code, including the output of other
4254 optimization transforms, such as the MAP transform above.)
4255 * Credit information has been moved from source file headers into CREDITS.
4256 * Source file headers have been made more standard.
4257 * The CASE macro now compiles without complaining even when it has
4260 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4262 * (Note that the way that the PCL macroexpansions were rewritten
4263 to accommodate the change in DEFGENERIC below breaks binary
4264 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4265 not run under sbcl-0.6.2. Once we get out of alpha releases,
4266 i.e. hit release 1.0.0, we'll probably try to maintain binary
4267 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4268 and sbcl-1.4.4. Until then, however, it might be fairly common
4269 for maintenance releases to break binary compatibility.)
4270 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4272 * The reporting of unhandled signals has been changed to print some
4273 explanatory text as well as the report form. (Previously only
4274 the report form was printed.)
4275 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4276 it defines, so that the compiler no longer issues undefined function
4277 warnings for compiled-but-not-yet-loaded generic functions.
4278 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4279 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4280 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4281 section of the ANSI spec are supported.
4282 * The "" nickname for the "KEYWORD" package has been removed.
4283 The reader still handles symbol tokens which begin with a package marker
4284 as keywords, but it doesn't expose its mechanism for doing so in the
4285 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4286 * The system now issues STYLE-WARNINGs for contradictory TYPE
4287 proclamations. (Warnings for contradictory FTYPE proclamations would
4288 be nice too, but those can't be done usefully unless the type system
4289 is made smarter about FUNCTION types.)
4290 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4291 systematized, so that "*target-*.lisp is supposed to exist only on the
4292 target and imply that there's a related file which exists on the
4293 host, and *host-*.lisp is supposed to exist only on the host and imply
4294 that there's a related file which exists on the target. This involves a
4295 lot of renaming. Hopefully the acute confusion caused by the renaming
4296 will be justified by the reduction in chronic confusion..
4297 ** runtime-type.lisp -> early-target-type.lisp
4298 ** target-type.lisp -> late-target-type.lisp
4299 ** early-host-format.lisp -> early-format.lisp
4300 ** late-host-format.lisp -> late-format.lisp
4301 ** host-error.lisp -> misc-error.lisp
4302 ** early-error.lisp -> early-target-error.lisp
4303 ** late-error.lisp -> late-target-error.lisp
4304 ** host-defboot.lisp -> early-defboot.lisp
4305 ** code/misc.lisp -> code/target-misc.lisp
4306 ** code/host-misc.lisp -> code/misc.lisp
4307 ** code/numbers.lisp -> code/target-numbers.lisp
4308 ** code/early-numbers.lisp -> numbers.lisp
4309 ** early-host-type.lisp -> early-type.lisp
4310 ** late-host-type.lisp -> late-type.lisp
4311 ** host-typep.lisp -> typep.lisp
4312 ** load.lisp -> target-load.lisp
4313 ** host-load.lisp -> load.lisp
4314 ** host-disassem.lisp -> disassem.lisp
4315 ** host-insts.lisp -> insts.lisp
4316 ** byte-comp.lisp -> target-byte-comp.lisp
4317 ** host-byte-comp.lisp -> byte-comp.lisp
4318 ** host-signal.lisp -> signal.lisp
4319 ** host-defstruct.lisp -> defstruct.lisp
4320 ** late-target-type.lisp -> deftypes-for-target.lisp
4321 Furthermore, several other previously target-only files foo.lisp (e.g.
4322 hash-table.lisp and random.lisp) have been split into a target-and-host
4323 foo.lisp file and a target-only target-foo.lisp file, with their key type
4324 definitions in the target-and-host part, so that the cross-compiler will
4325 know more about target types.
4326 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4327 gone away. In their place are various *BACKEND-FOO* variables
4328 corresponding to the slots of the old structure.
4329 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4330 into the target SBCL has been fixed.
4331 * The chill.lisp system for loading cold code into a running SBCL
4333 * Support for the CMU CL "scavenger hook" extension has been removed.
4334 (It was undocumented and unused in the CMU CL sources that SBCL was
4335 derived from, and stale in sbcl-0.6.1.)
4336 * Various errors in the cross-compiler type system were detected
4337 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4338 (enabling various consistency checks). Many of them were fixed,
4339 but some hard problems remain, so the compiler is back to
4340 running without *TYPE-SYSTEM-INITIALIZED* for now.
4341 * As part of the cross-compiler type system cleanup, I implemented
4342 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4343 * I have started adding UNCROSS calls throughout the type system
4344 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4345 on cross-compiler input files will be able to go away, and various
4347 * CONSTANTP now returns true for quoted forms (as explicitly required
4350 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4352 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4353 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4354 (MAKE-LIST -1). In the longer term, it ought to become true
4355 that declarations are assertions even at SAFETY 1. For now, it's not
4356 quite true even at SAFETY 3, but it's at least more nearly true..
4357 (Note that this change seems to increases the size of the system by
4358 O(5%) and to decrease the speed of the compiler by 20% or more.)
4359 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4360 for the problem of printing dozens of lines of distracting information
4361 about low-level system machinery as part of the top stack frame
4362 on entry to the debugger when an undefined function was called.
4363 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4364 is not reset to COMMON-LISP-USER.
4365 * Compilation of stuff related to dyncount.lisp has been made conditional
4366 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4367 smaller. The various dyncount-related symbols have been moved into
4368 a new "SB-DYNCOUNT" package.
4369 * tty-inspect.lisp has been renamed to inspect.lisp.
4370 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4371 feature has gone away. (When we eventually port to other flavors of
4372 libc and/or Unix, we'll try to make the differences between flavors
4373 invisible at the user level.)
4374 * Various other *FEATURES* tags, and/or their associated conditionals,
4375 have been removed if obsolescent, or given better documentation, or
4376 sometimes given more-mnemonic names.
4378 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4380 * tidied up "make.sh" script
4381 * tidied up system directory structure
4382 * better "clean.sh" behavior
4383 * added doc/FOR-CMUCL-DEVELOPERS
4384 * many many small tweaks to output format, e.g. removing possibly-confusing
4385 trailing #\. character in DESCRIBE-INSTANCE
4386 * (EQUALP #\A 'A) no longer signals an error.
4387 * new hashing code, including EQUALP hashing
4388 * tidied up Lisp initialization and toplevel
4389 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4390 * command line argument processing
4391 * added POSIX-GETENV function to deal with Unix-ish environment variables
4392 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4393 terminating SBCL on EOF
4394 * non-verbose GC by default
4395 * There is no more "sbcl" shell script; the sbcl file is now the C
4396 runtime executable (just like CMU CL).
4397 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4399 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4400 symbol and package information as Lisp native symbol and package objects
4401 instead of strings naming symbols and strings naming packages. This way,
4402 whenever packages are renamed (as in warm init), debug information is
4403 transformed along with everything else.
4404 * tweaked the optimization policy declarations which control the building
4405 of SBCL itself. Now, among other things, the system no longer saves
4406 source location debugging information. (This helps two problems at once
4407 by reducing SBCL size and by keeping SBCL from trying to look for its
4408 sources -- which may not exist -- when reporting errors.)
4409 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4410 debugging and testing purposes
4411 * cleaned up printing, making the printer call PRINT-OBJECT for
4412 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4413 methods, giving nearly-ANSI behavior
4414 * converted almost all special variables to use *FOO* naming convention
4415 * deleted PARSE-TIME functionality, since it can be done portably
4416 * moved some files out of cold init into warm init
4417 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4419 * regularized formatting of source files
4420 * added an install.sh script
4421 * fixed ridiculous memory usage of cross-compiler by making
4422 compiler/alloc.lisp not try to do pooling unless it can hook
4423 itself into the GC of the cross-compilation host. Now the system
4424 builds nicely on my old laptop.
4425 * added :SB-ALLOC in target-features.lisp-expr
4426 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4427 was not implemented)
4428 * re-did condition handling and note reporting in the compiler. Notes
4429 are no longer handled by signalling conditions. Style warnings
4430 and warnings are handled more correctly and reported in such a way
4431 that it's easy to find one or the other in your output (so that you
4432 can e.g. figure out which of many problems caused COMPILE-FILE to
4434 * changed the severity of several compiler warnings from full WARNING
4435 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4436 compiler note reporting so that it doesn't use the condition system
4437 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4438 COMPILE-FILE command)
4439 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4440 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4441 no longer supported, since their implementation was deeply intertwingled
4442 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4443 * removed bogus "support" for compiler macros named (SETF FOO), and
4444 removed the compiler macro for SETF INFO (but only after making a fool
4445 of myself on the cmucl-imp mailing list by posting a bogus patch for
4446 DEFINE-COMPILER-MACRO..)
4447 * Compiled files containing forms which have side effects on the Lisp
4448 reader (such as DEFPACKAGE forms) are now handled more correctly.
4449 (Compiler queuing of top level lambdas has been suppressed by setting
4450 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4451 * deleted various currently-unused source files, e.g. gengc.lisp. They
4452 may be added back at some point e.g. when porting to other architectures,
4453 but until they are it's distracting to distribute them and to try to
4455 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4456 there were so many of them they're just distractions, and UNCROSS is
4457 known to be able to handle the current sources
4458 * moved PROFILE functionality into TRACE, so that it will be clear
4459 how the wrapping and unwrapping of functions when you profile them
4460 interacts with the wrapping and unwrapping of functions when you
4461 trace them. (Actually, the functionality isn't there yet, but at least
4462 the interface specification is there. Hopefully, the functionality will
4463 arrive with some future maintenance release.)
4464 * removed host-oops.lisp
4465 * changed signature of QUIT function to allow UNIX-CODE argument
4466 * fixed READ-SEQUENCE bug
4467 * tweaked verbose GC output so that it looks more like the progress
4468 output that ANSI specifies for functions like LOAD
4469 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4470 * added <http://sbcl.sourceforge.com> to the banner information printed by