1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
3 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
4 be returned from its body when the values were being returned
5 using unknown-values return convection and the W-P-O was wrapped
6 inside an UNWIND-PROTECT.
7 * bug fix: sb-posix should now compile again under Windows, enabling
10 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
11 * incompatible change: hash-table accessor functions are no longer
12 automatically protected by locks. Concurrent accesses on the same hash-table
13 from multiple threads can give inconsistent results or even corrupt the
14 hash-table completely. Multi-threaded applications should do their own
15 locking at the correct granularity. In the current implementation it is
16 still safe to have multiple readers access the same table, but it's not
17 guaranteed that this property will be maintained in future releases.
18 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
19 and will signal an error at runtime.
20 * enhancement: SB-THREAD package now exports a semaphore interface.
21 * enhancement: CONS can now stack-allocate on x86 and
22 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
24 * enhancement: nested lists can now be stack allocated on
25 platforms providing stack allocation support.
26 * enhancement: dynamic-extent support has been extended to support
27 cases where there are multiple possible sources for the stack
29 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
30 if the mutex is uncontested on Linux.
31 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
32 as specified by the CLHS. (thanks to Tobias Rittweiler)
33 * bug fix: NaN comparison now works on x86-64.
34 * bug fix: CLOSE :ABORT T on a stream with pending output now
36 * bug fix: instances of non-standard metaclasses using standard
37 instance structure protocol sometimes missed the slot type checks
39 * bug fix: known functions can be inlined in high-debug code.
41 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
42 * minor incompatible change: the MSI installer on Windows no longer
43 associates .lisp and .fasl files with the installed SBCL.
44 * minor incompatible change: :UNIX is no longer present in *FEATURES*
45 on Windows. (thanks to Luis Oliviera)
46 * new feature: SB-CLTL2 contrib module now implements
47 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
48 * optimization: scavenging weak pointers is now more efficient,
49 requiring O(1) instead of O(N) per weak pointer to identify
50 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
51 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
52 method bodies using constant slot-names when the first argument is
53 a specializer parameter for the method.
54 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
55 names, when the class of the instance is a direct instance
56 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
57 as slow as the constant slot-name case.)
58 * optimization: member type construction is now O(N) instead
60 * optimization: UNION and NUNION are now O(N+M) for large
61 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
63 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
64 now more readable in environments like Slime which display it.
65 (thanks to Tobias C. Rittweiler)
66 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
67 was able to infer the correct argument type for the object on which
68 the CAS operation was being performed.
69 * bug fix: copy propagation interfered with parallel assignment
70 semantics in local calls. (reported by Paul Khuong)
71 * bug fix: the signed modular fixnum shift compiled to wrong code on
72 x86 and x86-64. (spotted by a slight modification to some of
75 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
76 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
77 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
78 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
80 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
81 and generic function now print the object identity for anonymous
82 instances. (thanks to Attila Lendvai)
83 * enhancement: as an extension to MOP, SBCL now supports SETF of
84 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
85 (thanks to Attila Lendvai)
86 * enhancement: sb-cover has an alternate annotation mode which puts
87 the form annotations at the car of the form, instead of annotating
88 it completely. The benefit of this mode is that it shows better
89 which forms were instrumented by the compiler.
90 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
91 by printer control variables. (reported by Dan Corkill)
92 * bug fix: system leaked memory when delayed output was performed by
93 the OS in smaller chunks then expected. (thanks to David Smith)
94 * bug fix: system leaked memory when file streams were not closed
96 * bug fix: large objects written to slow streams that were modified
97 after the write could end up with the modified state written to
98 the underlying file descriptor.
99 * bug fix: multiple threads operating in parallel on the same stream
100 could cause buffer-overflows.
101 * bug fix: source location information is stored correctly
102 (broken since 1.0.6). This bug would generally show up as the
103 Slime debugger higlighting the wrong form when the sldb-show-source
105 * bug fix: Branch forms are again annotated as branches in the sb-cover
107 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
108 on x86-64. (reported by Gregory Vanuxem)
109 * bug fix: EQUALP could return wrong results for structures with raw
110 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
111 word). (reported by Vjacheslav Fyodorov)
112 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
115 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
116 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
117 atomic compare-and-swap operations on threaded platforms.
118 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
119 allows assining a global minimum value to optimization qualities
120 (overriding proclamations and declarations).
121 * enhancement: closed over variables can be stack-allocated on x86
123 * performance bug fix: GETHASH and (SETF GETHASH) are once again
125 * optimization: slot definition lookup is now O(1). This speeds up
126 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
127 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
128 * optimization: ASSOC and MEMBER can now be open-coded for all
129 combinations of keyword arguments when second argument is constant
130 and SPEED >= SPACE. In other cases a specialized version is
132 * bug fix: using obsoleted structure instances with TYPEP and
133 generic functions now signals a sensible error.
134 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
135 (reported by Kristoffer Kvello)
136 * bug fix: backtrace construction is now more careful when making
137 lisp-objects from pointers on the stack, to avoid creating bogus
138 objects that can be seen by the GC.
139 * bug fix: defaulting of values in contexts expecting more than 7
140 variables now works on x86-64. (reported by Christopher Laux)
141 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
143 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
144 as the property-list of a symbol.
145 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
146 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
147 situations requested, are once again file-compileable. (reported
150 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
151 * MOP improvement: support for user-defined subclasses of
152 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
153 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
154 the expansion of DEFMETHOD, is responsible for generating a form
155 which creates a list of specializers when evaluated. Additional
156 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
157 debugging and introspective support.
158 * minor incompatible change: the (unsupported) spinlock interface
159 has changed: free spinlock now has the value NIL, and a held spinlock
160 has the owning thread as its value.
161 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
162 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
164 * enhancement: name of a socket-stream is now "a socket" instead of
166 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
167 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
168 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
169 for generic functions. (Thanks to Tobias C. Rittweiler)
170 * optimization: bignum printing speed has been improved by 20-40%
171 (depending on the bignum size.)
172 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
174 * bug fix: the cache used by the CLOS to store precomputed effective
175 methods, slot offsets, and constant return values is now thread and
177 * bug fix: generic function dispatch function updating is now thread
178 and interrupt safe (in the sense that the known issues have been
180 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
181 * bug fix: interning EQL-specializers is now thread and interrupt safe.
182 * bug fix: asdf systems with dependencies to the SB-POSIX or
183 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
184 * bug fix: interrupt safety of applicable method computation has been
187 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
188 * new contrib: sb-cover, an experimental code coverage tool, is included
190 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
191 significantly faster.
192 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
193 produce more efficient code on x86-64 if the compiler can determine
194 that (+ INDEX <constant>) does not require a bounds check and FOO
195 has an element type at least 8 bits wide.
196 * enhancement: a new, experimental synchronous timeout facility is
197 provided. Refer to SB-SYS:WITH-DEADLINE for details.
198 * enhancement: when a symbol name conflict error arises, the
199 conflicting symbols are always printed with a package prefix.
200 (thanks to Kevin Reid)
201 * enhancement: stepping is now once again supported on the SPARC and
202 MIPS platforms. (It is also now more likely to work on CheneyGC
204 * enhancement: sb-sprof can now also track and report accurate call
206 * bug fixes: the treatment of non-standard subclasses of
207 SB-MOP:SPECIALIZER is more correct.
208 * incompatible change: PURIFY no longer copies the data from the
209 dynamic space into the static and read-only spaces on platforms
210 that use the generational garbage collector
211 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
213 * bug fix: GC race condition occasionally resulting in crashes with
214 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
216 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
218 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
219 a STYLE-WARNING to be signalled (regression from 1.0.4.)
220 * bug fix: an asynchronous interrupt could previously leave the
221 system running with GC inhibited.
222 * bug fix: a DECLARE form evaluated at top-level now causes an error
223 rather than silently (or verbosely) returning NIL.
224 * bug fix: trying to dissassemble functions compiled at high DEBUG could
225 result in a error being signalled due to source form lookup errors.
226 (reported by Peter Graves)
228 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
229 * incompatible change: removed writer methods for host-ent-name,
230 host-ent-addresses -- changing the values did not update the DNS
232 * minor incompatible change: changed experimental JOIN-THREAD interface
233 * documentation: the manual now lists reader and writer methods
234 in class slot documentation sections. (thanks to Richard M Kreuter)
235 * documentation: unwinding from asyncronous events has been
236 documented as unsafe.
237 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
238 in multithreaded application code.
239 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
240 platforms. (thanks to James Anderson for the optimization hint)
241 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
243 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
244 variants no longer cons.
245 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
246 their NOT- variants no longer cons.
247 * optimization: EQUAL hash tables no longer use SXHASH for objects
248 of all data types, but instead use an EQL hash for types for which
249 EQUAL is the same as EQL.
250 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
251 are significantly faster.
252 * optimization: new STRING-OUTPUT-STREAM implementation is much
253 faster for large outputs and conses 30% less on average.
254 * enhancement: XREF information is now collected for references made
255 to global variables using SYMBOL-VALUE and a constant argument.
256 * enhancement: SIGINT now causes a specific condition
257 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
258 * bug fix: FILE-POSITION used to signal an error in some cases where
259 ANSI requires it to return NIL.
260 * bug fix: ADJUST-ARRAY is now interrupt-safe.
261 * bug fix: adding and removing fd-handlers is now interrupt-safe.
262 * bug fix: inlined calls to C now ensure 16byte stack alignment on
264 * bug fix: bad type declaration in the CLOS implementation has
265 been fixed. (reported by James Anderson)
266 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
267 (thanks to Lutz Euler)
268 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
269 required by the CLHS. (reported by Samium Gromoff)
270 * bug fix: dead unbound variable references now signal an error.
271 (reported by Marco Monteiro)
272 * bug fix: / with an unused value was being deleted in safe code.
273 (thanks to Marco Monteiro and Kevin Reid)
274 * bug fix: number of characters that can be written onto a single
275 line in a file is unlimited.
276 * bug fix: some GC deadlocks caused by asynchronous interrupts have
277 been fixed by inhibiting interrupts for when GC is disbled.
278 * bug fix: some interrupt safety issues with GETHASH, (SETF
279 GETHASH), CLRHASH and REMHASH have been fixed.
280 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
281 specifier no longer causes infinite recursion.
282 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
283 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
284 * bug fix: an &environment argument with the correct variable information
285 is passed to macros that are expanded during byte compilation.
286 (reported by Samium Gromoff)
287 * bug fix: a logic error was causing the hash function for bignums to
288 have excessive amounts of collisions. (reported by Faré Rideau)
289 * bug fix: modifying the contents of an array could change the return
290 value of SXHASH on that array, which is only allowed for strings
291 and bit vectors. (bug introduced in 0.9.16)
292 * improvement: the x86-64/darwin port now passes all tests (except
293 for the debugger tests) but should still be considered
294 experimental until this is fixed.
295 * improvement: a style-warning is signaled for CASE (etc) clauses with
296 duplicate keys. (thanks to Kevin Reid)
297 * improvement: macos/x86 and macos/x86-64 now use mach exception
298 handlers for dealing with illegal instructions (for trapping and
299 error handling) and memory protection violations (for GC).
301 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
302 * new platform: experimental support for x86-64/darwin (MacOS).
303 * incompatible change: the thread-safe (on most platforms) getaddrinfo
304 and getnameinfo sockets functions are used instead of gethostbyaddr
305 and gethostbyname, on platforms where the newer functions are available.
306 As a result, the ALIASES field of HOST-ENT will always be NIL on these
308 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
309 don't print the startup banner, but behave as if --noinform was passed
310 as a command line argument. (thanks to Kevin Reid)
311 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
312 * optimization: code using alien values with undeclared types is much faster.
313 * optimization: the compiler is now able to open code SEARCH in more cases.
314 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
315 * bug fix: using standardized COMMON-LISP special variables as loop
316 variables no longer signals bogus package lock violations. (reported
318 * bug fix: declaring local loop variables to be of a range-limited type
319 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
320 (reported by Andras Simon)
321 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
322 bugs remain on x86-64.)
323 * bug fix: the #= and ## reader macros now interact reasonably with
324 funcallable instances.
325 * bug fix: type-checks for function arguments were compiled using the
326 compiler policy settings of the wrong lexical environment (in 1.0.2
328 * bug fix: SHADOW accepts characters as string designators, as required
329 by the spec (thanks to Eric Marsden)
330 * bug fix: fixed GC safety issues when foreign functions are called with
331 non-base strings as arguments
332 * bug fix: more consistent error output for fatal-compiler-warnings, like
334 * bug fix: functions with proper names were showing up as NIL in
335 backtraces (reported by Edi Weitz, regression in 1.0.2)
337 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
338 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
339 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
340 produce more efficient code on the x86 if the compiler can determine
341 that (+ INDEX <constant>) does not require a bounds check and FOO
342 has an element type at least 8 bits wide.
343 * bug fix: references to undefined variables are handled the same way
344 in toplevel forms as in the normal compiler
345 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
347 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
348 (thanks to Jon Buller)
349 * improvement: faster compilation times for complex functions
350 * improvement: added readlink support to SB-POSIX (thanks to Richard
353 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
354 * improvement: experimental support for mach exception handling on
355 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
357 * improvement: support for GBK external format.
358 (thanks to Chun Tian (binghe))
359 * improvement: the debugger now displays variables that have been closed
360 over, in code compiled with (DEBUG 2) or higher
361 * improvement: support for executable cores on NetBSD (thanks to
363 * new feature: added a RESTART-FRAME debugger command
364 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
365 be used to provide an implementation for FILE-POSITION on Gray streams
366 (thanks to Eric Marsden)
367 * new feature: add syslog, openlog and closelog support to SB-POSIX
368 (thanks to Richard Kreuter)
369 * optimization: the function call overhead in code compiled with
370 a high DEBUG optimization setting is significantly
371 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
372 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
373 (thanks to Tony Martinez)
374 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
375 evaluated once (reported by Kevin Reid)
376 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
377 works again (thanks to Kilian Sprotte)
378 * bug fix: an error is signaled for tagbodies with duplicate tags
379 (thanks to Stephen Wilson)
380 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
381 * bug fix: Win32 port can now handle foreign code unwinding Lisp
382 stack frames from alien callbacks.
383 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
384 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
385 65k pages (thanks to David Woodhouse)
386 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
388 changes in sbcl-1.0.1 relative to sbcl-1.0:
389 * new platform: FreeBSD/x86-64, including support for threading.
390 * new feature: the compiler stores cross-referencing information
391 abount function calls (who-calls), macroexpansion (who-macroexpands)
392 and special variables (who-binds, who-sets, who-references) for code
393 compiled with (< SPACE 3). This information is available through the
394 sb-introspect contrib.
395 * new feature: users may subclass SEQUENCE, and have instances of
396 these classes interoperate with standard Common Lisp functions if
397 a number of methods are defined. (This feature is experimental
398 and the interface subject to change based on feedback from SBCL
399 users and the general community)
400 * improvement: sb-sprof traces call stacks to an arbitrary depth on
401 x86/x86-64, rather than the previous fixed depth of 8
402 * improvement: another pthread back-end of mutex "pthread-futex".
403 * bug fix: non-ascii command-line arguments are processed correctly
404 (thanks to Yaroslav Kavenchuk)
405 * bug fix: non-required arguments were not passed correctly when a method
406 defined using DEFMETHOD was called from a mop-generated method using
407 CALL-NEXT-METHOD (reported by Pascal Costanza)
408 * bug fix: recursion is now permitted in accessors through
409 SLOT-UNBOUND. (reported by Pascal Costanza)
410 * bug fix: an error was signaled at startup if the HOME environment
411 variable was defined, but had an empty value (reported by Peter Van Eynde)
412 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
413 signal a PROGRAM-ERROR, not a BUG.
414 * bug fix: SB-POSIX:READDIR works when built with large file support.
415 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
417 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
418 for better automatic indentation support. (thanks to Matt Pillsbury)
419 * optimization: loading generic functions no longer takes O(n^2) time,
420 proportional to the amount of methods in the generic function
421 (reported by Todd Sabin and Jeremy Brown)
422 * optimization: the FIND and POSITION family of sequence functions
423 are significantly faster on arrays whose element types have been
425 * improvements to the Windows port:
426 ** Intermittent heap corruption problems have been fixed. (thanks
427 to Alastair Bridgewater)
428 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
430 ** Lisp is able to unwind foreign exception frames from alien
431 callbacks. (thanks to Alastair Bridgewater)
433 changes in sbcl-1.0 relative to sbcl-0.9.18:
434 * improvement: experimental support for threading on FreeBSD/x86.
435 (thanks to NIIMI Satoshi)
436 * improvement: runtime option --dynamic-space-size can be used
437 to set the size of the dynamic space reserved on startup.
438 * improvement: floating point modes in effect are now saved in
439 core, and restored on startup.
440 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
441 startup, not time since first call to GET-INTERNAL-REAL-TIME.
442 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
443 threads are not running after *SAVE-HOOKS* have run.
444 * improvement: writes to CLOS instance slots are type-checked in code
445 compiled with (SAFETY 3)
446 * improvement: floating-point exception handling on FreeBSD (thanks to
448 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
449 (thanks to Zach Beane)
450 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
452 * improvement: added support for the Shift-JIS external format.
453 (contributed by NIIMI Satoshi)
454 * improvement: callbacks are supported on Linux/PPC. (thanks to
456 * bug fix: compiler bug triggered by a (non-standard) VALUES
457 declaration in a LET* was fixed. (reported by Kaersten Poeck)
458 * bug fix: file compiler no longer confuses validated and already
459 dumped structurres. (reported by Kaersten Poeck)
460 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
461 fill-pointer signals a type-error as required. (thanks to
463 * bug fix: disassemly of funcallable instances works.
464 * bug fix: single stepping on PPC.
465 * bug fix: fix thread-safety problems in the type system (generally
466 manifesting as nonsensical errors like "STRING is a bad type specifier
467 for sequences" or "The value 1 is not of type FIXNUM")
468 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
469 (reported by Josip Gracin)
470 * bug fix: an error is signaled for attempts to displace arrays with
471 incompatible element types (thanks to Mario Mommer)
472 * bug fix: more correct handling of wide characters in debug info
473 (bug reported by Attila Lendvai and fixed by Juho Snellman)
474 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
475 and don't cause extra consing
476 * optimization: MAP and MAP-INTO are significantly faster on vectors
477 whose elements types have been declared.
478 * Improvements to SB-SPROF:
479 ** Support for allocation profiling
480 ** Reduced profiling overhead, especially for long profiling runs
481 * Improvements to the Windows port:
482 ** floating point exceptions are now reported correctly.
483 ** stack exhaustion detection works partially.
484 ** more accurate GET-INTERNAL-REAL-TIME.
485 ** better RUN-PROGRAM behaviour in case of errors in the child
487 ** PROBE-FILE now simplifies pathnames correctly.
488 ** DIRECTORY now works correctly with :WILD-INFERIORS.
489 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
490 1st 1970 (although time timezone data will be unreliable).
491 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
493 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
494 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
495 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
497 * bug fix: two potential GC deadlocks affecting threaded builds.
498 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
499 returns T (reported by Anton Kazennikov)
500 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
501 with non-variable places
502 * bug fix: remove a race condition in the setting of
503 funcallable-instance functions, this should make threaded CLOS
504 code more stable against memory faults.
505 * bug fix: corruption of specials when unbinding is interrupted by an
506 asynchronous unwind (reported by Hannu Koivisto)
507 * improvement: the debugger will now also display local variables that
508 are only used once, for code compiled with a DEBUG optimization quality
511 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
512 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
513 * incompatible change: External-format support for FFI calls. The
514 SB-ALIEN:C-STRING no longer implies an ASCII
515 external-format. Instead the string is subject to external-format
516 conversion. Additionally return values of type SB-ALIEN:C-STRING
517 are by default of type (SIMPLE-ARRAY CHARACTER), not
518 SIMPLE-BASE-STRING. For an alien type that behaves like the old
519 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
520 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
521 * incompatible change: SB-EXT package no longer contains the
522 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
523 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
525 * incompatible change: the single-stepper is no longer available
526 on Alpha, Mips and Sparc platforms.
527 * minor incompatible change: the direct superclasses of
528 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
529 not (STANDARD-OBJECT FUNCTION). This makes the
530 class-precedence-lists of GENERIC-FUNCTION and
531 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
533 * minor incompatible change: the default stream external format on
534 non-unicode SBCL is no longer detected from the locale, but is always
536 * new feature: Add a version of evaluator that uses an interpreter instead
537 of the compiler. EVAL still uses the compiler by default, to switch it
538 to use the interpreter, set the value of the variable
539 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
540 * minor incompatible change: the single-stepper REPL has been merged
541 with the normal debugger (see the "Stepping" heading of the debugger help
542 for more details). The debugger command STEP will no longer switch
543 to the single-stepper REPL.
544 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
545 for a type now works.
546 * bug fix: loading of default sysinit file works. (thanks to Leonid
548 * bug fix: better detection of circularities in the file-compiler.
549 (reported by Marco Monteiro)
550 * bug fix: the CL pathname functions now work with files that have
551 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
552 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
553 systems with Unix98 pty semantics.
554 * bug fix: ASDF-INSTALL will now work with bsd tar.
555 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
557 * bug fix: timers expiring in dead threads no longer cause a
558 type-error (reported by Paul "Nonny Mouse").
559 * bug fix: thanks to more lightweight single-stepper instrumentation,
560 code compiled with (DEBUG 3) will compile and execute significantly faster,
561 and will have more accurate type-inferencing than before
562 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
563 whose bindings are modified
564 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
565 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
566 ** replace dummy implementations of CL:MACHINE-INSTANCE and
567 CL:SOFTWARE-VERSION with proper version
569 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
570 * feature: implemented the READER-METHOD-CLASS and
571 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
572 as specified by AMOP.
573 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
575 * optimization: faster LOGCOUNT implementation on x86 and x86-64
576 (thanks to Lutz Euler)
577 * optimization: hashing of general arrays and vectors has been
578 improved. (reported by Any Fingerhut)
579 * enhancement: SB-INTROSPECT is now able to find definitions of
580 profiled functions. (thanks to Troels Henriksen)
581 * enhancement: compiler-macro expansion applies now to FUNCALL forms
582 as well, allowing compiler-macros for SETF-functions to expand.
583 * enhancement: step-instrumentation no longer wraps known
584 single-value functions with multiple-value context, allowing
585 better type inference.
586 * fixed bug #337: use of MAKE-METHOD in method combination now works
587 even in the presence of user-defined method classes. (reported by
588 Bruno Haible and Pascal Costanza)
589 * fixed bug #339(c): if there are applicable methods not part of any
590 long-form method-combination group, call INVALID-METHOD-ERROR.
591 (reported by Bruno Haible)
592 * fixed bug #361: the :FUNCTION initarg in the protocol for
593 initialization of methods can now be used to override
594 internally-produced optimized functions. (reported by Bruno
596 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
597 system-provided lambda expression no longer cause warnings about
598 unbound #:|pv-table| symbols.
599 * bug fix: improved the handling of type declarations and the
600 detection of violations for keyword arguments with non-constant
602 * bug fix: potentially erronous calls to PATHNAME and
603 MERGE-PATHNAMES were being flushed in some cases.
604 (reported by Richard Kreuter)
605 * bug fix: compiled calls to TYPEP were mishandling obsolete
606 instances. (reported by James Bielman and Attila Lendvai)
607 * bug fix: format strings with ~> without matching ~< no longer
608 trigger an AVER, but signal an understandable error instead.
609 (reported by Antonio Martinez)
610 * bug fix: specifying an output-file without a pathname-type for
611 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
612 of input-file instead of "fasl". (reported by Robert Dodier)
613 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
614 (reported by James Y Knight).
615 * bug fix: compiler-macros-function did not consider the environment
616 argument for shadowing by local functions.
617 * bug fix: compiler-macros expansion was inhibited by local INLINE
619 * bug fix: inline expansions of known functions were subject to
620 step-instrumentation in high debug policies, leading to problems
622 * bug fix: compiler failed to differentiate between different CONS
624 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
625 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
626 * bug fix: #368: incorrect use of expressed vs. upgraded array
628 * bug fix: #306a: more precise unions of array types.
629 * thread-safety improvements:
630 ** CONDITION-WAIT could return early on Linux, if the thread was
631 interrupted and subsequently continued with SIGCONT.
632 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
634 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
635 * added support for the ucs-2 external format. (contributed by Ivan
637 * minor incompatible change: pretty printing of objects of type
638 (cons symbol) is, in the default pprint-dispatch-table, now
639 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
641 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
642 called later in a class's lifetime, possibly as late as when the
643 first instance of the class is created. Previously,
644 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
645 class became finalizeable.
646 * fixed bug: FILE-POSITION sometimes returned inconsistent results
647 for multibyte external-format streams. (thanks to "vbzoli")
648 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
649 with :ALLOCATION :CLASS inherited from superclasses of the
651 * fixed bug: anonymous classes can now be created using the :NAME
652 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
653 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
654 * fixed bug: core-files saved with :EXECUTABLE T can again be
655 executed when SBCL_HOME isn't set. (reported by James Knight)
656 * fixed bug: toplevel LOCALLY forms with declarations could
657 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
658 * fixed bug: printing from several different threads using different
659 values of *print-case* could cause invalid output, due to
660 some internal special variables of the printer not being bound
661 thread-locally (reported by Max Mikhanosha)
662 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
663 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
664 (reported by Pascal Costanza)
665 * fixed bug: FINALIZE-INHERITANCE is called from
666 REINITIALIZE-INSTANCE on classes when the class has previously
667 been finalized, as required by AMOP.
668 * minor code generation optimizations:
669 ** better register allocation in CLOS dispatching functions
670 ** overflow detection when coercing signed bytes to fixnums on x86-64
671 ** is now implemented with one IMUL instruction instead of three shifts
672 ** more efficient bit-vector access on x86 and x86-64
673 ** more efficient access to raw structure slots on x86 and x86-64
674 * fixed some bugs revealed by Paul Dietz' test suite:
675 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
678 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
679 * feature: thread support on Solaris/x86, and experimental thread support
681 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
683 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
684 default method for SLOT-UNBOUND.
685 * minor incompatible change: prevent the user from specializing the
686 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
687 somewhat counter to the intent of the protocol, I (CSR) think, and
688 additionally it just doesn't work in SBCL as currently
689 implemented, thanks to optimizations (that are always valid for
690 the other three SLOT-VALUEish functions, but not for the setter).
691 * minor incompatible change: the :SB-LDB feature is now enabled by
692 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
693 the low-level debugger.
694 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
695 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
696 down to an SB-SYS:FD-STREAM, allowing direct communication in
697 more cases. Temporary files and pipes are still used as a fallback
699 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
700 on the non-reentrant C functions localtime(3) and gmtime(3).
701 * bug fix: global optimization policy was not visible in LOCALLY and
703 * bug fix: class objects can be used as specializers in methods.
704 (reported by Pascal Costanza)
705 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
706 with a type error. (reported by blitz_ on #lisp)
707 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
708 failed with a type error. (reported by Pascal Bourguignon)
709 * bug fix: merging pathnames against defaults with :DIRECTORY
710 starting with '(:RELATIVE :BACK) should preserve the :BACK.
711 (reported by James Y Knight)
712 * bug fix: saving large (>2GB) cores on x86-64 now works
713 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
714 constant index and a (simple-array (signed-byte 32)) array
715 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
716 error (patch by Robert J. Macomber)
717 * feature: TIME now displays the amount of run-time spent in GC
718 * bug fix: The debugger now does a better job of respecting
719 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
720 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
721 workaround for bug 403.)
722 * bug fix: floating point exception handling now works on FreeBSD
723 (thanks to NIIMI Satoshi)
724 * fixed some bugs revealed by Paul Dietz' test suite:
725 ** MISC.641: LET-conversion were not supposed to work in late
727 * improvements to the Win32/x86 port:
728 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
729 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
731 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
732 * new feature: source path information is generated for macro-expansion
733 errors for use in IDE's like Slime (thanks to Helmut Eller)
734 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
735 * bug fix: compiler does not loop forever on an invalid type in
737 * improvement: compilation of most CLOS applications is significantly
739 * optimization: added a limited bytecode compiler for simple toplevel
740 forms, speeding up compilation and FASL loading
741 * bug fix: the statistical profiler now properly distinguishes anonymous
744 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
745 * minor incompatible change: in sbcl-0.9.11 (but not earlier
746 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
747 into subclasses of the finalized class. Now user calls to
748 FINALIZE-INHERITANCE finalize just the one class, and calls by the
749 system return before any subclasses are finalized.
750 * minor incompatible change: The reader no longer ignores errors
751 regarding non-existent packages in #+ and #- feature tests.
752 * new feature: command line options --no-sysinit, --no-userinit to
753 inhibit loading the corresponding init files
754 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
755 for sending data through UDP sockets (thanks to François-René Rideau)
756 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
757 error is signalled instead (thanks to François-René Rideau)
758 * minor incompatible change: Error signalling behaviour of lexical
759 operations violating package locks has changed slightly. Refer to
760 documentation on package locks for details.
761 * enhancement: EVAL can process IF-expressions without resorting to the
763 * bug fix: Some operations involving SIN, COS, or TAN weren't being
764 constant-folded properly due to missing out-of-line functions.
765 (reported by Mika Pihlajamäki)
766 * bug fix: LISTEN sometimes returned T even in cases where no data was
767 immediately available from the stream
768 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
769 were reversed. (reported by Levente Mészáros)
770 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
771 when given a vector displaced to an adjustable array. (reported
773 * bug fix: derivation of float boundaries from numbers outside the
774 appropriate float range (reported by John Wiseman)
775 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
777 * bug fix: precomputing cache entries for generic functions with
778 some subclasses of specializers as yet invalid does not attempt to
779 fill a cache line with a negative offset. (reported by Levente
781 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
782 allow condition class objects as arguments to DOCUMENTATION and
783 (SETF DOCUMENTATION); only find and set documentation for
784 structure names for the STRUCTURE doc-type. (suggested by Gary
786 * improvements to the Win32/x86 port:
787 ** (user-homedir-pathname) and default initialization file
788 locations now know about the user's "Documents and Settings"
789 directory (thanks to Yaroslav Kavenchuk)
790 ** run-program is implemented (thanks to Mike Thomas)
791 ** sockets support (thanks to Timothy Ritchey)
792 ** better backtrace support (thanks to Alastair Bridgewater)
793 ** sb-grovel supported
794 ** asdf-install and sb-posix work somewhat
795 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
796 * improvements to the Solaris/x86 port:
797 ** works on Solaris 11/Solaris Express
798 ** floating-point exception handling support
799 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
800 * fixed some bugs revealed by Paul Dietz' test suite:
801 ** REMOVE-METHOD returns its generic function argument even when
802 the method is not one of the generic functions' methods.
803 ** objects declared as MEMBER types can be admissible arguments to
805 ** printing characters should simply be printed by the FORMAT ~:C
807 ** compiler failure when compiling functions with hairy constant
808 defaults for optional parameters.
809 ** compiler produces wrong code when MAYBE-INLINE-expanding a
810 function, which is already optimized.
812 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
813 * new platform: experimental support for SBCL x86/Darwin, including
814 MacOS X 10.4.5 on Intel.
815 * new feature: Unicode character names are now known to the system
816 (through CHAR-NAME and NAME-CHAR).
817 * new feature: the filesystem location of SBCL's core file is
818 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
819 * minor incompatible change: the contrib modules SB-POSIX and
820 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
821 this change is to make it easier to distribute
822 location-independent binaries.
823 * bug fix: as implied by AMOP, standardized classes no longer have
824 slots named by external symbols of public packages. (reported by
826 * optimization: calling functions via constant symbols -- as in
827 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
828 via the function object as in (FUNCALL #'FOO).
829 * optimization: on x86 and x86-64, the calling convention for the
830 case of dealing with an unknown number of values has been altered
831 to be friendlier to the prediction heuristics implemented,
832 particularly with reference to CALL and RET pairing. (thanks to
833 Alastair Bridgewater)
834 * optimization: on x86, the code for access to thread-local symbol
835 values and binding/unbinding of thread-local symbols is smaller.
836 (thanks to Alastair Bridgewater)
837 * enhancement: CONSTANTP is now able to determine constantness of
838 more complex forms, including calls to constant-foldable standardized
839 functions and some special forms beyond QUOTE.
840 * fixed bug: occasional GC crashes on Solaris/x86
841 * optimization: x86-64 supports stack allocation of results of simple
842 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
843 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
844 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
845 (thanks to James Knight)
846 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
847 by the standard (thanks to Stephen Compall)
849 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
850 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
851 be used for bundling the runtime and the core file into one
852 executable binary. This feature is not currently supported on all SBCL
853 platforms. (thanks to James Bielman and NIIMI Satoshi)
854 * new feature: a generational or ephemeral garbage collector is now
855 the default on the PowerPC platform (both Linux and Darwin). The
856 old Cheney (stop and copy) collector is a build-time option.
857 (thanks to Cyrus Harmon, after Raymond Toy)
858 * minor incompatible change: the method by which SBCL finds its
859 contributed modules has changed; it no longer relies on symbolic
860 links from an $SBCL_HOME/systems directory, but searches directly
861 in the subdirectories of $SBCL_HOME.
862 * enhancement: the dynamic heap size on the Linux/PPC platform is
863 markedly larger, even using the older Cheney garbage collector.
864 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
865 certain complicated string types. (reported by Gary King)
866 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
867 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
868 * fixed bug: DOCUMENTATION on structures no longer signals an
869 error if no structure type of the right name exists. (reported by
871 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
872 applicable non-standard primary or :AROUND method on
873 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
874 no longer cause unbound variable errors. (reported by Kevin Reid)
875 * fixed bug: metacircle resolution in cases where methods have slots
876 added before the slots from STANDARD-METHOD. (reported by Jean
878 * fixed bug: the Power PC assembly code for calling into lisp
879 sometimes computed its return address wrongly (depending on the
880 15th bit of the address, fixed at link time). This used to
881 manifest itself in a segmentation violation while building PCL.
882 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
883 many others over the years)
884 * fixed bug: ROOM no longer reports silly numbers for stack usage if
885 the stack pointer (treated as a signed integer) is negative.
886 (thanks to Peter van Eynde)
888 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
889 * new platform: experimental support for the Windows operating
890 system has been added. (thanks to Alastair Bridgewater)
891 * fixed several bugs in and robustified the PPC FFI (including
892 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
893 * bug fix: allow non-simple string symbol names (reported by Paul
895 * bug fix: interrupt handling on NetBSD (thanks to Richard M
897 * bug fix: saving a core corrupted callbacks on x86/x86-64
898 * bug fix: closed a loophole in metacircularity detection and
899 grounding in the PCL implementation of CLOS.
900 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
901 (reported by tomppa on #lisp)
902 * bug fix: clear the direction flag on Lisp -> C transitions, as
903 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
904 (reported by Andrej Grozin and Hendrik Maryns)
905 * optimization: major improvements to GC efficiency on GENCGC platforms
906 * optimization: faster implementation of EQUAL
907 * optimization: emit more efficient opcodes for some common
908 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
909 * optimization: several other minor code-generation improvements on x86-64
910 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
912 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
913 * minor incompatible change: (SETF CLASS-NAME) and (SETF
914 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
915 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
916 by ANSI as a generic function, and for consistency (SETF
917 GENERIC-FUNCTION-NAME) is treated likewise.
918 * fixed bug #233.b: make constraint propagation notice when a variable
919 value is changed after it is referenced but before it is used
920 * fixed bug #296: no more arbitrary behaviour from filenames with
921 odd characters as --load arguments. (reported by Adam Warner)
922 * fixed bug #390: :CHARACTER-SET pathname components now work as
923 expected. (reported by Tim Daly Jr)
924 * fixed bug #391: complicated :TYPE intersections in slot
925 definitions no longer cause an error in PCL internals.
926 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
927 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
928 returning the number of octets which would be written to the
929 file-stream. (thanks to Robert J. Macomber)
930 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
931 arguments to the internal stream functions. (thanks to David
933 * bug fix: stack exhaustion is now handled on the x86/SunOS
934 platform. (thanks to Daisuke Homma)
935 * bug fix: more accurate ROOM results on GENCGC platforms
936 * optimization: improved type inference for arithmetic-for
937 index variables in LOOP
938 * optimization: faster floating-point SQRT on x86-64
939 * fixed some bugs revealed by Paul Dietz' test suite:
940 ** DOCUMENTATION returns NIL instead of "" for method combinations
941 that don't have a docstring
943 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
944 * minor incompatible change: (SETF CLASS-NAME) and (SETF
945 GENERIC-FUNCTION-NAME) are no longer generic functions, and
946 therefore are not customizeable by user code (as seems to be at
947 least permitted and maybe required by AMOP). As a consolation,
948 however, the SBCL implementation of these functions now calls
949 REINITIALIZE-INSTANCE as specified by AMOP.
950 * bug fix: slot-definition documentation is propagated as per ANSI
951 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
952 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
953 argument, as do eslotd initialization methods. (from Pascal
954 Costanza's "Closer" project)
955 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
956 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
958 * bug fix: it is now possible to have more than one subclass of
959 STANDARD-GENERIC-FUNCTION without causing stack overflow.
960 (reported by Bruno Haible, Pascal Costanza and others)
961 * bug fix: the dependent update protocol now works for generic
962 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
964 * bug fix: condition-class instances corresponding to
965 DEFINE-CONDITION forms are now created eagerly. (reported by
966 Kalle Olavi Niemitalo on comp.lang.lisp)
967 * bug fix: floating point printing is more accurate in some
968 circumstances. (thanks to Simon Alexander)
969 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
970 merged with *DEFAULT-PATHNAME-DEFAULTS*.
971 * bug fix: callbacks on OS X now preserve stack-alignment.
972 (thanks to Cyrus Harmon)
973 * enhancement: the x86-64 disassembler is much better at
974 disassembling SSE instructions. (thanks to Lutz Euler)
975 * enhancement: CHECK-TYPE on a variable now allows type-inference
976 (thanks to Vincent Arkesteijn)
977 * optimization: improved performance of EUC-JP external format.
978 (thanks to NIIMI Satoshi)
979 * optimization: performance improvements to IO on file streams of
980 :ELEMENT-TYPE CHARACTER
981 * optimization: much faster memory allocation on x86-64
982 * optimization: faster garbage collections (latency and throughput)
984 * optimization: faster bignum subtraction and division on x86 and x86-64
985 (thanks to Lutz Euler)
986 * optimization: more accurate type-inference for loops that use a
987 floating point index variable or a negative step.
989 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
990 * bug fix: add a workaround to SBCL looping infinitely at startup on
991 Linux kernels with apparently buggy implementations of personality().
992 (thanks to Svein Ove Aas)
993 * bug fix: Unicode symbols are correctly printed in LDB backtraces
994 (thanks to David Lichteblau)
995 * bug fix: local bindings shadow global symbol macros for
996 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
997 * optimization: non-open coded uses of numeric comparison operators
998 (e.g. >) no longer cons when called with more than one parameter
999 on platforms supporting dynamic-extent allocation.
1000 * enhancement: saving cores with foreign code loaded is now supported
1001 on MIPS/Linux in addition to the previously supported platforms.
1002 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1003 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1004 * bug fix: division by zero in sb-sprof when no samples were collected
1005 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1006 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1007 (thanks to Alexander Kjeldaas)
1008 * new feature: ignoring the return values of destructive functions
1009 like NREVERSE signals a compile-time style-warning.
1010 (thanks to Kevin Reid)
1011 * new feature: the alignment of alien structure fields can be
1012 explicitly specified. (thanks to Cyrus Harmon)
1013 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1014 and dump core on SIGQUIT
1016 ** incompatible change: threads do not inherit values of specials
1017 from their parents (see manual)
1018 ** bug fix: threads stacks belonging to dead threads are freed by the
1019 next exiting thread, no need to gc to collect thread stacks anymore
1020 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1021 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1022 ** bug fix: dynamic variable and thread start related gc lossage
1023 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1025 * fixed some bugs revealed by Paul Dietz' test suite:
1026 ** SUBTYPEP is slightly more accurate on heinously complicated
1027 CONS types where some of the members have uncertain (in the
1028 NIL, NIL sense) type relationships to each other.
1030 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1031 no longer purified unless :PURIFY T is explicitly specified.
1032 ** Non-purified cores are significantly smaller than before
1034 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1035 * new feature: timers based on Zach Beane's excellent timer package
1036 * added support for the following external formats: koi8-u,
1037 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1038 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1039 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1040 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1041 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1042 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1043 * incompatible change: a threaded SBCL will no longer revert to
1044 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1045 * bug fix: interrupts are disabled until startup is complete; no
1046 more sigsegvs when receiving a signal to soon
1047 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1049 * bug fix: add a workaround for the memory randomization features in
1050 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1051 workaround will only be in effect on systems with the proc filesystem
1053 * bug fix: printing objects of type HASH-TABLE signals a
1054 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1056 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1057 have been running for over 50 days. (reported by Gilbert Baumann)
1058 * bug fix: the logic for getting names of functions gets less
1059 confused when confronded with alternate-metaclass
1060 funcallable-instances. (reported by Cyrus Harmon)
1061 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1062 consistent, even on internal alternate-metaclass objects.
1063 * bug fix: flush closure information collected by physical
1064 environment analysis prepass before the main pass. (bug reported
1066 * bug fix: compiler pack phase does not modify a hashtable, which is
1067 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1068 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1069 may be expanded. (reported by Alexander <malishev> on c.l.l)
1070 * bug fix: no more style-warnings when compiling code using LAST
1071 under high-SPEED low-SPACE settings. (reported by David Wallin
1073 * fixed some incompatibilities between SBCL's MOP and the MOP
1075 ** the METAOBJECT class is now implemented;
1076 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1077 STANDARD-OBJECT, as required;
1078 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1079 now compatible (as required by VALIDATE-SUPERCLASS); there
1080 remains a consistency requirement over the presence or absence
1081 of the FUNCTION class in the superclass list of finalized
1082 classes; see the manual for more details;
1083 ** the :AROUND method for COMPUTE-SLOTS on
1084 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1085 requested slot ordering.
1087 ** bug fix: parent thread now can be gc'ed even with a live
1089 ** bug fix: binding a special with PROGV to no value is not
1090 the same as that symbol not having been bound (thanks to
1092 ** bug fix: binding specials is thread safe (thanks to
1094 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1095 and SB-SPROF do not die with 'no handler for signal XX in
1096 interrupt_handle_now(..)' anymore
1097 ** bug fix: WITH-TIMEOUT works with multiple running threads
1098 * fixed some bugs revealed by Paul Dietz' test suite:
1099 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1100 the :method-class keyword argument.
1102 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1103 * new port: the Solaris operating system on x86 processors is now
1104 mostly supported, though some rough edges in the environment
1105 remain. (thanks to Daisuke Homma)
1106 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1107 space for its heap. (thanks to Thiemo Seufer)
1108 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1109 closures. (thanks to Thiemo Seufer)
1110 * minor incompatible change: eof selects abort in the debugger.
1111 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1112 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1114 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1115 deprecated, and will go away in a future revision of SBCL.
1116 * minor incompatible change: GC-ON and GC-OFF are no longer
1117 implemented with a counter, it does not matter how many times gc
1118 is switched on or off
1119 * bug fix: discriminating functions for generic function classes
1120 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1121 make invalid assumptions about method precedence order. (reported
1123 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1124 platforms. (thanks to Thiemo Seufer)
1125 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1126 * bug fix: correct pathname printing with printer escaping is on.
1127 (thanks to Kevin Reid)
1128 * bug fix: complex VOP definitions in "user-space" no longer trigger
1129 package locks. (reported by Zach Beane)
1130 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1131 for funcallable-instance functions, and is no different from
1133 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1134 characters in the current readtable. (reported by Nicholas Neuss)
1135 * bug fix: SUBTYPEP on various CONS types returns more a more
1136 accurate acknowledgment of its certainty.
1137 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1138 lists in some cases. This partially fixes bug 384.
1139 * flush all standard streams before prompting in the REPL and the
1141 * bug fix: signal handling and triggering gc do not conflict
1142 directly anymore, in particular a high frequency sb-sprof does
1143 not prevent gc from running
1144 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1145 approximation for timezone and DST information between the
1146 universal time epoch and the smallest negative 32-bit time_t.
1147 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1148 year 1899 so long as the encoded time is non-negative.
1149 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1150 the correct answer for non-constant rotate amounts when performing
1151 an inline 32-bit rotation.
1153 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1154 there is only one thread in the session
1155 ** bug fix: memory leak for streams created in one thread and
1156 written to in another
1157 ** bug fix: lockup when compiled with gcc4
1158 ** bug fix: race that allows the gc to be triggered when gc is
1160 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1161 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1163 ** bug fix: finished threads are gc'ed properly
1164 * fixed some bugs revealed by Paul Dietz' test suite:
1165 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1166 has arguments with a different set of applicable methods from
1167 the orignal arguments.
1168 ** The type error thrown by MAP now has a correct expected-type
1170 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1171 name a compiled function.
1172 ** Three MISC tests where a large bignum was improperly coerced to
1173 a float that couldn't represent that bignum during type
1174 derivation were fixed.
1175 ** SUBTYPEP can now handle types involving the negation of a
1176 list-form FUNCTION type.
1177 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1178 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1179 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1181 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1182 * New feature: Experimental support for bivalent streams: streams
1183 opened with :element-type :default now allow character and binary
1184 (unsigned-byte 8) I/O
1185 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1186 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1188 * bug fix: no more highly sporadic "couldn't check whether ~S is
1189 readable" when reading a stream and an interrupt hits in the middle
1190 of a select system call
1191 * compiler better recognizes complex arrays (reported by Eduardo
1193 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1194 for variables on SBCL built with linkage-tables. (reported by Luis
1196 * various error reporting improvements.
1197 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1198 (Thanks to Thiemo Seufer)
1199 * bug fix: nested reader invokations work correctly
1200 * bug fix: it is possible to have simultaneous references to foreign
1201 code and foreign data with the same name.
1203 ** added x86-64 support
1204 ** incompatible change: the threading api now works with thread
1205 objects instead of thread ids
1206 ** bug fix: threads are protected from signals and interruption when
1207 starting up or going down
1208 ** bug fix: a race where an exiting thread could lose its stack to gc
1209 ** bug fix: don't halt on infinite error in threads if possible
1210 ** fixed numerous gc deadlocks introduced in the pthread merge
1211 ** bug fix: fixed thread safety issues in read and print
1212 ** bug fix: debugger doesn't hang on session lock if interrupted at
1213 an inappropriate moment
1214 ** bug fix: run-program is now thread safe(r)
1215 ** bug fix: inner with-recursive-lock no longer releases the mutex
1216 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1217 * fixed some bugs revealed by Paul Dietz' test suite:
1218 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1219 EXPECTED-TYPE slots filled.
1220 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1222 ** MAKE-CONDITION accepts classes as type-designators.
1223 ** COMPILE may never return NIL.
1224 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1225 range before calling Unix time functions
1227 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1228 * numerous signal handling fixes to increase stability
1229 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1230 * minor incompatible change: we now correctly canonize default
1231 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1232 as per the MOP, rather than the historical (INITARG INITFUNCTION
1233 INITFORM). (reported by Bruno Haible)
1234 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1235 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1236 for more information.
1237 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1238 pathname is a directory pathname.
1239 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1240 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1242 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1243 :METACLASS argument in addition to a class name. (reported by
1244 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1245 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1246 (reported by Bruno Haible; patch from Gerd Moellmann)
1247 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1249 * bug fix: more cleanups to the floating point exception handling on
1250 x86-64 (thanks to James Knight)
1251 * bug fix: the compiler does not try to constant fold calls of
1252 COERCE and BIT-* functions when they return freshly constructed
1253 objects. (reported by Nikodemus Siivola and Paul Dietz)
1254 * optimization: improved the MIPS versions of generic (in the
1255 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1256 * optimization: direct conversion of (unsigned-byte 32) to floats on
1257 the PowerPC platform.
1258 * optimization: structure instances with raw slots now use less
1259 memory, and probably show better memory locality. (thanks to
1261 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1262 are treated as requests for stack allocation on the x86-64,
1263 Alpha-32, PPC and SPARC platforms.
1264 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1265 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1266 (thanks to Tony Martinez)
1268 ** gcing a dead thread can no longer lead to lockups
1269 ** threads block signals until they are set up properly
1270 ** errno is no longer shared by threads
1271 ** interrupt-thread restores the eflags register on x86
1272 ** fixed some lockups due to gc/thread interaction
1273 * fixed some bugs revealed by Paul Dietz' test suite:
1274 ** invalid dotted lists no longer raise a read error when
1275 *READ-SUPPRESS* is T
1276 ** signal an error if a symbol that names a declaration is used
1277 as the name of a type, or vice versa
1278 ** allow using the (declare (typespec var*)) abbreviation for
1279 (declare (type typespec var*)) with all type specifiers
1280 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1281 ** always return NIL from PPRINT-POP when OBJECT is NIL
1282 ** don't signal errors when pretty-printing malformed LABELS,
1283 FLET or MACROLET forms
1284 ** declarations in a DOLIST body are also in scope for the
1286 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1288 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1291 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1292 * fixed cross-compiler leakages that prevented building a 32-bit
1293 target with a 64-bit host compiler.
1294 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1295 opened with :IF-EXISTS :OVERWRITE.
1296 * fixed bug 281: error for an invalid qualifier in a short-form method
1297 combination method is not signalled until the faulty method is called.
1298 * bug fix: iteration variable type inferrer failed to deal with open
1299 intervals. (reported by Alan Shields)
1300 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1301 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1302 or more runtime options were provided to the sbcl binary.
1303 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1304 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1305 * optimization: there's now a fast-path for fixnum arguments in the
1306 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1307 * optimization: the code generated on x86-64 is more compact thanks
1308 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1309 * bug fix: floating-point exception handling now partly works on
1310 x86-64. (Thanks to James Knight)
1311 * improvement to the MIPS backend from Thiemo Seufer: C-style
1312 64-bit long long arguments and return values to alien functions
1314 * fixed some bugs revealed by Paul Dietz' test suite:
1315 ** the type-error signalled from WARN has a filled-in DATUM slot.
1316 ** the type-error required when a stream is not associated with
1317 a file has the stream as its datum.
1318 ** type-errors on single-floats on x86-64 no longer have
1319 :INVALID-OBJECT as the datum
1320 ** the type-errors signalled for invalid function names now have
1321 a correct expected type
1322 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1323 for structures defined with a :TYPE. Documentation strings for
1324 typed structures are no longer immediately discarded
1325 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1326 broadcast streams and synonym streams. FILE-LENGTH now also works
1327 on broadcast streams.
1329 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1330 * incompatible change: the --noprogrammer option, deprecated since
1331 version 0.7.5, has been removed. Please use the equivalent
1332 --disable-debugger option instead.
1333 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1335 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1336 inoperational for a while now) has been completely removed.
1337 * null lexical environments are now printed as #<NULL-LEXENV>,
1338 significantly reducing the amount of clutter in typical backtraces.
1339 * documentation on weak pointers, finalization, and after GC hooks
1340 has been added to the manual.
1341 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1342 as other specialized array types, is much faster. SUBSEQ and
1343 COPY-SEQ on such arrays have also been sped up.
1344 * optimization: EQL is now more efficient when at least other argument
1345 is known to be of type (OR FIXNUM (NOT NUMBER)).
1346 * fixed bug: the runtime is now less vulnerable to changes in the
1347 size of the SBCL object on OS X, and virtual memory is reserved for
1348 all spaces that need to be at a fixed address.
1349 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1350 * fixed bug: finalizers and after GC hooks that cause consing are now
1352 * fixed bug: compiler error messages and summaries are now printed to
1353 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1354 * fixed inference of the upper bound of an iteration variable.
1355 (reported by Rajat Datta).
1356 * fixed bug 211e: calling local functions with duplicated constant
1357 keyword argument no longer causes a bogus style warning about an
1359 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1360 ftype declaration to be disregarded. (reported by Dave Roberts)
1361 * fixed bug 373: caused by erronous compilation of references to alien
1362 variables in the runtime on ppc/darwin.
1363 * fixed bug 376: CONJUGATE type deriver.
1364 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1365 (reported by Baughn on #lisp)
1366 * a cross-compiler bug on non-x86 platforms has been identified and
1367 fixed. (thanks to Bruno Haible)
1368 * improvements to the MIPS runtime code for increased stability.
1369 (thanks to Thiemo Seufer)
1370 * increased the maximimum compact environment size to allow
1371 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1372 * partial workaround for bug 135: don't name the function we're
1373 calling for hairy cases of EVAL, so as not to accumulate one environment
1374 entry per call to EVAL. (reported by Kevin Reid)
1375 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1376 * optimization: type testing for non-vector arrays should be faster.
1377 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1379 * bug fix: setting 31st element of a bit vector to zero did not work
1381 * bug fix: redefining a class definition which failed due to a
1382 previous accessor / function clash now works (but see BUGS entry
1383 #380 for more problems in this area). (thanks to Zach Beane)
1384 * the long form of DEFINE-METHOD-COMBINATION disables method group
1385 checking when given a single method group with pattern *. (thanks
1387 * on x86 compiler supports stack allocation of results of simple
1388 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1389 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1390 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1391 * fixed some bugs related to Unicode integration:
1392 ** the restarts for recovering from input and output encoding
1393 errors only appear when there is in fact such an error to
1395 * fixed some bugs revealed by Paul Dietz' test suite:
1396 ** MISC.549 and similar: late transformation of unsafe type
1397 assertions into derived types caused unexpected code
1399 ** SCALE-FLOAT type deriver is less wrong.
1400 ** type derivers for EXP, LOG and similar functions compute result
1401 types for complex arguments better.
1402 ** (MISC.563) CONJUGATE type deriver works for very restricted
1404 ** out-of-line type testers for character strings are available.
1405 ** EQUAL compiler transform understands specialness of objects
1407 ** accessing double-floats stored on the stack now works on x86-64.
1408 ** debugger internals could sometimes create invalid lispobjs,
1409 resulting in GC crashes.
1410 ** MISC.548: type check weakening can convert required type into
1412 ** initialization forms for bindings are not in scope of free special
1415 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1416 * incompatible change: thread support for non-NPTL systems has
1417 been removed - locking is buggy and unreliable. A threaded
1418 SBCL build will now warn at startup and refuse to create
1419 new threads, unless futex support is detected in the kernel
1420 * incompatible change: the top level REPL now has only an ABORT
1421 restart associated with it, not TOPLEVEL and ABORT as it used to.
1422 TOP and TOPLEVEL are now available as debugger commands for
1423 returning to the top level.
1424 * incompatible change: forms evaluated in the REPL now use the
1425 global optimization policy.
1426 * incompatible change: user- and system-initialization files are
1427 no longer processed with LOAD, but by READ and EVAL; hence the
1428 global optimization policy, startup package, readtable, etc,
1430 * The .fasl file format number has been incremented because of
1431 various incompatible changes.
1432 * internal entry point details and argument counts no longer appear
1433 in backtraces unless explicitly requested by setting
1434 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1435 * built-in and standard functions no longer have names like "top
1436 level local call to FOO".
1437 * fixed bug 32: functions defined in non-null lexical environments
1438 now have more legible printed representation
1439 * fixed bug 33: functions defined in non-null lexical environemnts
1440 are now more amenable to inspection by INSPECT.
1441 * workaround for bug 354: XEPs no longer appear in backtraces unless
1442 explicitly requested.
1443 * fixed bug: receiving the signal which results from attempting to
1444 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1445 SIGBUS on other *BSDs) on architectures where the C stack is also
1446 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1447 to debugger confusion or wild instability. (reported by Cheuksan
1449 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1450 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1451 (reported by Lutz Euler)
1452 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1453 compiled code. (reported by Paul Dietz)
1454 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1455 specialized parameter to a method to something that is not TYPEP
1456 the specializer is now possible.
1457 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1458 face of package deletion.
1459 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1460 pathname. (reported by David Tolpin on c.l.l)
1461 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1462 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1463 STRING-STREAM and FILE-STREAM, respectively.
1464 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1465 than previously; in addition, its test suite is now run on build.
1466 (thanks to Luke Gorrie)
1467 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1468 * optimization: added a immediate representation for single-floats
1470 * fixed some bugs revealed by Paul Dietz' test suite:
1471 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1472 ** attempting to create a package with a colliding nickname causes
1473 correctable errors to be signalled.
1474 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1475 ** several x86-64 backend bugs related to sign-extension of immediate
1478 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1479 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1480 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1482 * fixed loading of multiply forward-referenced layouts.
1483 (thanks to Cheuksan Wang)
1484 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1485 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1486 (see COMPILE-FILE documentation for details of :PRINT option)
1487 * fixed bugs 19 and 317: fixed-format floating point printing is
1488 more accurate. This also fixes a bug reported by Adam Warner
1489 related to the ~@F format directive.
1490 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1492 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1493 dispatch table if the from-char is a dispatch macro character.
1494 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1495 by the wordsize no longer ignore the last word. (reported by Lutz
1497 * fixed bug in type checking of dynamic-extent variables. (reported
1499 * optimization: sequence traversal functions use their freedom to
1500 coerce function designators to functions.
1501 * optimization: code with many calls to CLOS methods specialized on
1502 CLOS classes has had redundant type checks removed.
1503 * optimization: added declarations to speed up operations that access
1504 the internal character database (for example STRING-UPCASE)
1505 * optimization: comparison operations between floats and sufficiently small
1506 fixnums no longer create extra rationals
1507 * fixed some bugs related to Unicode integration:
1508 ** portions of multibyte characters at the end of buffers for
1509 character-based file input are correctly transferred to the
1510 start of the buffer at the next read.
1511 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1512 passing it through to OPEN.
1513 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1514 argument given to internal calls to OPEN.
1515 ** the built-in comment readers (introduced by character sequences
1516 ";" and "#|") are more forgiving to encoding errors; they will
1517 STYLE-WARN and then attempt to resync the stream at a character
1518 boundary. (thanks to Teemu Kalvas)
1519 * fixed some bugs in the x86-64 port:
1520 ** Negative short int return values from c-calls are sign-extended
1522 ** The stack is aligned to 16-bytes for c-calls, as required by
1523 the ABI. (thanks to Cheuksan Wang)
1524 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1525 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1526 for enums. (thanks to Vincent Arkesteijn)
1527 ** Multiple small optimizations and bugfixes for floating point
1529 * fixed some bugs revealed by Paul Dietz' test suite:
1530 ** Space, Tab, Linefeed, Return and Page have the invalid
1531 secondary constituent character trait.
1532 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1534 ** WITH-INPUT-FROM-STRING should only update the index place on
1536 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1537 works more reliably.
1538 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1539 with one-dimensional arrays with fill pointers.
1540 ** TYPE-OF failed on a complex with an integer realpart and a
1542 ** compiler failure during type inference for the code of form
1543 (IF (EQL X (THE ...)) ...) (MISC.535).
1545 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1546 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1547 platform. The port supports 61-bit fixnums, large memory spaces
1548 and reloading shared object files.
1549 * enhancement: saving cores with foreign code loaded is now
1550 supported on ppc/Darwin in addition to the previously supported
1552 * enhancement: the statistical profiler now walks deeper into the
1553 call stack for more meaningful call-graphs and accrued time
1554 reports (x86/x86-64 only). It also now reports time spent in
1556 * enhancement: it is now possible to trace most individual methods
1557 of a generic function in addition to tracing the generic function
1559 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1561 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1562 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1563 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1564 produces an error. (thanks to Vincent Arkesteijn)
1565 * bug fix: NAMESTRING on pathnames with :WILD components in their
1566 directories works correctly. (thanks to Artem V. Andreev)
1567 * fixed bug 125: compiler preserves identity of closures. (reported
1569 * bug fixed: functions with &REST arguments sometimes failed with
1570 "Undefined function" when compiled with (DEBUG 3). (reported by
1572 * bug fix: overflow during compiling of setting element of a bit
1573 vector with constant index and value. (reported by Timmy Douglas)
1574 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1575 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1576 * on x86 compiler partially supports stack allocation of dynamic-extent
1578 * GO and RETURN-FROM do not check the extent of their exit points
1579 when compiled with SAFETY 0.
1580 * fixed some bugs related to Unicode integration:
1581 ** encoding and decoding errors are now much more robustly
1582 handled; it should now be possible to recover even from invalid
1583 input or output to the terminal. (thanks to Teemu Kalvas)
1584 ** provided a first cut at implementing STRING-TO-OCTETS and
1585 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1586 ** altered the SB-MD5 contributed module slightly, changing the
1587 interface just enough for it to be supportable for builds where
1588 lisp characters are not eight bits.
1589 * fixed some bugs revealed by Paul Dietz' test suite:
1590 ** the FORMATTER-generated functions for ~V[ conditionals require
1591 the correct number of arguments.
1592 ** READ-FROM-STRING returns the mandated second value when applied
1593 to displaced strings.
1594 ** the #\Rubout and #\Backspace characters are treated as invalid
1595 constituent characters by the tokenizer.
1597 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1598 * new feature: reloading changed shared object files with
1599 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1600 * new feature: references to foreign variables and functions
1601 can now be compiled and loaded before the corresponding shared
1602 object file is loaded, as long as the foreign definitions are
1603 available at runtime.
1604 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1605 supported. (thanks to Dan Debertin)
1606 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1607 just keywords. (thanks to Vincent Arkesteijn)
1608 * fixed bug #331: structure-class instances corresponding to
1609 DEFSTRUCT forms are now created eagerly.
1610 * fixed bug #345: backtraces from calls to undefined functions work
1611 on x86 as well. Related bug #61 is now also partially fixed on x86
1612 (backtraces from throws to unknown catch tags.)
1613 * bug fix: lambda-list parsing is now stricter vrt. order and number
1614 of lambda-list keywords.
1615 * bug fix: as specified by AMOP, an error is signalled if a
1616 class-option appears multiple times in a DEFCLASS form. (reported
1618 * bug fix: RANDOM can be compiled when the compiler derives the type
1619 of its numeric argument as a disjoint set of small integers.
1620 (reported by Paul Dietz)
1621 * bug fix: starting a core saved with shared objects loaded when
1622 those objects are not available no longer causes threaded SBCL to
1623 hang. (reported by Sean Ross)
1624 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1626 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1627 argument, which must always be NIL. (reported by Kalle Niemitalo)
1628 * bug fix: printing 1.0d+23 no longer results in an error.
1629 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1630 * bug fix: structure slot setters preserve evaluation order. (thanks
1632 * fixed some bugs related to Unicode integration:
1633 ** RUN-PROGRAM can allow its child to take input from a Lisp
1634 stream. (reported by Stefan Scholl)
1635 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1636 locales. (reported by Ken Causey)
1637 * fixed some bugs revealed by Paul Dietz' test suite:
1638 ** INCF, DECF and REMF evaluate their place form as specified in
1640 ** FORMATTER expands ~{ ~} iteration directives with V or #
1641 parameters correctly.
1642 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1643 consequent uses no arguments correctly.
1644 ** the system has a partial understanding of the (COMPLEX RATIO)
1646 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1649 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1650 * new feature: a build-time option (controlled by the :SB-UNICODE
1651 keyword feature, enabled by default) for building the system with
1652 support for the entire 21-bit character space defined by the
1654 * new feature: the system now has rudimentary external-format
1655 support; the primary user-visible change at this time is that
1656 characters with the high bit set (such as lower-case-e-acute) will
1657 print correctly to a terminal in a UTF-8 environment.
1658 * minor incompatible change: BASE-CHAR no longer names a class;
1659 however, CHARACTER continues to do so, as required by ANSI.
1660 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1661 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1662 has been moved to the SB-EXT package (temporarily re-exported from
1664 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1665 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1667 * fixed bug #351: better error-handlind and reporting for malformed
1669 * fixed bug #350: bignum-printing is now more memory-efficient,
1670 allowing printing of very large bignums, eg. (expt 2 10000000).
1671 (reported by Bruno Haible)
1672 * fixed bug #302: better primitive-type selection for intersection
1674 * fixed bug #308: non-graphic characters now all have names, as
1675 required. (reported by Bruno Haible)
1676 * bug fix: redefining a class with different superclasses now correctly
1677 removes it from the direct-subclasses of its previous superclasses.
1678 (reported by David Morse)
1679 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1680 new value now works. (reported by Bruno Haible)
1681 * bug fix: correct canonicalization of multiple non-standard slot
1682 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1683 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1684 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1685 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1686 now exists, an signals an error.
1687 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1688 during macroexpansion for non-iteration variables as well. (reported
1689 by Bruno Haible for CMUCL)
1690 * bug fix: Cyclic structures and unprintable objects in compiler
1691 messages no longer cause errors. (reported by Bruno Haible)
1692 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1693 and READ-FROM-STRING all now return a primary value of NIL if
1694 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1695 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1696 (reported by Bruno Haible for CMUCL)
1697 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1698 do not designate a condition. (reported by Bruno Haible for
1700 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1701 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1702 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1703 permitting resolution in favour of any of the conflicting symbols.
1704 (reported by Bruno Haible for CMUCL)
1705 * bug fix: EQUAL compiler optimizations is less aggressive on
1706 strings which can potentially compare true despite having distinct
1707 specialized array element types.
1708 * bug fix: unit enumerations can be defined without dividing by
1709 zero. (thanks to Vincent Arkesteijn)
1710 * FORMAT compile-time argument count checking has been enhanced.
1711 (report from Bruno Haible for CMUCL)
1712 * a partial workaround for the bug 262: the compiler does not try to
1713 inline-expand a local function doing RETURN-FROM from a deleted
1714 BLOCK. (thanks to Peter Denno for the bug report and to David
1715 Wragg for the simple test case)
1716 * fixed some bugs revealed by Paul Dietz' test suite:
1717 ** RENAME-PACKAGE allows all package designators as new package
1719 ** constraint propagation and lambda variable substitution are
1720 more cautious in dealing with partially deleted code.
1721 ** compiler sometimes lost reoptimization passes.
1722 ** CERROR, given a condition as condition designator, passes its
1723 remaining arguments to the continue format control without
1725 ** Case-altering FORMAT directives work correctly on non-ASCII
1727 ** The REAL type specifier handles bounds outside the floating
1728 point ranges without signalling FLOATING-POINT-OVERFLOW.
1729 ** Functions with IR1-transformations can create intercomponent
1730 references to global functions.
1731 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1733 ** FORMAT ~R treats a nil value for its first parameter correctly.
1735 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1736 * enhancement: saving cores with foreign code loaded is now
1737 supported on x86/NetBSD and sparc/Linux in addition to the previously
1738 supported platforms.
1739 * bug fix: on some platforms repeated installations caused multiple
1740 copies of HTML documentation to be installed -- should not happen
1741 any more. (reported by Stefan Scholl)
1742 * bug fix: parsing self-recursive alien record types multiple times
1743 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1744 original patch by Helmut Eller for CMUCL)
1745 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1746 (thanks to Richard Kreuter)
1747 * bug fix: defining classes whose accessors are methods on existing
1748 generic functions in other (locked) packages no longer signals
1749 bogus package lock violations. (reported by François-René Rideau)
1750 * bug fix: special variables as DEFMETHOD parameters no longer have
1751 associated bogus type declarations. (reported by David Wragg and
1753 * bug fix: read-write consistency on streams of element-type
1754 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1755 * bug fix: redefiniton of the only method of a generic function with
1756 no DEFGENERIC no longer emits a full WARNING. In addition,
1757 redefinition of generic functions with no DEFGENERIC to an
1758 incompatible lambda list now signals an error. (thanks to Zach
1760 * bug fix: DEFGENERIC now works even when there's a function of the
1761 same name in an enclosing lexical environment. (thanks to Zach
1763 * fixed compiler failure, caused by instrumenting code during
1764 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1765 * optimization: added loop analysis and improved register allocation
1766 * fixed some bugs revealed by Paul Dietz' test suite:
1767 ** POSITION on displaced vectors with non-zero displacement
1768 returns the right answer.
1769 ** (SIMPLE-STRING) is a valid type specifier for sequence
1771 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1773 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1774 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1776 ** The justification version of the FORMAT ~< directive treats
1777 non-zero minpad parameter correctly.
1779 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1780 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1781 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1782 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1783 the supported interface.
1784 * new feature: Single-stepping of code compiled with DEBUG 2 or
1785 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1786 * new feature: saving cores with foreign code loaded is now
1787 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1788 Timothy Moore's work for CMUCL)
1789 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1790 parameters to * instead of NIL if no initform is supplied.
1791 (reported by Johan Bockgaard)
1792 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1793 correctly when FUNCALL appears as the car of the form. Note:
1794 despite this FUNCALL forms are not currently subject to
1795 compiler-macro expansion. (port of Raymond Toy's fix for the
1796 same from CMUCL, reported by Johan Bockgaard)
1797 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1798 (thanks for Teemu Kalvas)
1799 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1800 case instead of terminating the iteration (thanks for Julian
1801 Squires, Sean Champ and Raymond Toy)
1802 * bug fix: incorrect expansion of defgeneric that caused a style
1803 warning. (thanks for Zach Beane)
1804 * bug fix: slot accessor effective method computation works properly
1805 for classes with multiple non-standard applicable methods on
1806 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1807 * on x86 compiler supports stack allocation of results of LIST and
1808 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1809 CMUCL implementation by Gerd Moellmann)
1810 * fixed some bugs revealed by Paul Dietz' test suite:
1811 ** FORMAT strings with both the ~<~:;~> form of the justification
1812 directive and pretty-printing directives cause an error.
1814 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1815 * incompatible change: the internal functions
1816 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1817 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1818 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1819 instead of the old functions.
1820 * new feature: on platforms where "dladdr" is available foreign
1821 function names now appear in backtraces. (based on Helmut Eller's
1823 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1824 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1826 * documentation: ASDF manual is now distributed with SBCL.
1827 * bug fix: SBCL can now load its contributed modules with REQUIRE
1828 even if the system-provided entries have been removed from
1829 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1831 * bug fix: backtraces involving undefined functions or assembly
1832 routines are more informative. (thanks to Brian Downing)
1833 * bug fix: mutually referent alien structures now work correctly.
1834 (reported by Rick Taube)
1835 * bug fix: structures defined by WITH-ALIEN can be referred to
1836 within other definitions in the same WITH-ALIEN.
1837 * bug fix: division operators (MOD, TRUNCATE and the like) with
1838 constant zero divisors and integer dividends no longer generate
1840 * bug fix: provide default methods for INPUT-STREAM-P and
1841 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1842 * bug fix: improve the detection and resolution of MOP metacycles
1843 (where effective method computation depends on the generic function
1844 having its effective method computed). (reported by Bruno Haible)
1845 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1846 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1847 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1848 * bug fix: pathnames with relative directory components can be
1849 represented relative to default pathnames.
1850 * optimization: in taking the GCD of bignums, reduce the two bignums
1851 to approximately the same size (using Euclid's algorithm) before
1852 applying the more sophisticated binary GCD. (thanks to Juho
1854 * optimization: COUNT on bitvectors now operates word-at-a-time.
1855 * optimization: ASH with a positive, but not necessarily constant,
1856 (leftwards) shift, when in a modular context, is compiled to a
1858 * fixed some bugs revealed by Paul Dietz' test suite:
1859 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1860 if the corresponding argument is NIL.
1861 ** FORMAT directives accepting a minpad parameter treat negative
1863 ** literal commas as character parameters to FORMAT directives are
1865 ** literal spaces directly after ~<Newline> directives within a
1866 format-logical-block (~:< ~@:>) do not induce :FILL-style
1867 conditional newlines.
1868 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1869 as specified: it no longer includes conditional newlines).
1870 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1872 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1873 :PER-LINE-PREFIX argument does not evaluate to a string.
1875 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1876 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1877 the manual for details; for now, package locks can be disabled by
1878 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1879 if no major problems are found then it is likely that they will be
1880 compiled in unconditionally.
1881 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1882 unsupported operators on all platforms. To load a shared library
1883 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1884 object file, link it into a shared library outside of SBCL and
1885 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1887 * bug workaround: ROOM T and the GC were not working together
1888 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1889 reporting facility aren't preserved. That reporting has been
1890 disabled, so now until and unless someone figures out how to make it
1891 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1892 * minor incompatible change: as threatened around sbcl-0.8.0, the
1893 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1894 The symbols are also exported from SB-PCL for backwards
1895 compatibility, but more so than before SB-PCL should be treated as
1896 an implementation-internal package.
1897 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1899 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1900 It is known as of this release not to work on the Alpha, however.
1901 * fixed bug #167: errors signalled due to illegal syntax in method
1902 bodies are now more legible.
1903 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1904 designators and can hence be used with TYPEP.
1905 * fixed bug #333: CHECK-TYPE now ensures that the type error
1906 signalled, if any, has the right object to be accessed by
1907 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1908 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1909 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1911 * fixed bug #334: programmatic addition of slots using specialized
1912 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1913 and :ALLOCATION :CLASS slots.
1914 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1915 float exponents. (rereported by Peter Seibel)
1916 * fixed a bug: #\Space (and other whitespace characters) are no
1917 longer considered to be macro characters in standard syntax by
1918 GET-MACRO-CHARACTER.
1919 * fixed bug: initialization of condition class metaobjects no longer
1920 causes an instance of the condition to be created. (reported by
1922 * fixed bug: it is now possible to have slots such that
1923 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1924 description is neither :INSTANCE nor :CLASS.
1925 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1926 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1927 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1928 non-standard SLOT-DEFINITION-ALLOCATION values.
1929 * fixed bugs: various race conditions handling exiting threads.
1930 CL-PPCRE's thread torture test now passes.
1931 * fixed arguably-a-bug: GC time proportional to number of threads in
1932 system even when most of them are idle
1933 * optimization: improved performance of BIT and SBIT on bit-vectors.
1934 * .fasl file incompatibility: The fasl file version number has
1935 been incremented because of changes associated with package locks.
1937 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1938 * minor incompatible change: the system no longer provides
1939 optimization hints (conditions which are TYPEP
1940 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1941 mode; these hints are still emitted when higher SPEED optimization
1943 * new contrib module: a sampling profiler (profiling by statistical
1944 sampling, rather than by instrumenting functions) is available as
1945 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1946 * the behaviour of the standard function ED is now customizeable by
1947 third parties through a hook variable: see ED's documentation
1948 string for information on the protocol.
1949 * the compiler no longer emits efficiency notes for (FUNCALL X)
1950 when the type of X is uncertain under default optimization
1952 * fixed bug 276: mutating a binding of a specialized parameter to a
1953 method to something that is not TYPEP the specializer is now
1955 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1956 exhibit the required behaviour on the x86 platform. (thanks to
1957 Peter van Eynde, Eric Marsden and Bruno Haible)
1958 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1959 even for difficult arguments. (reported by Peter Graves)
1960 * fixed bug 141a: the backquote printer now descends quoted
1962 * fixed another bug in backquote printing: no more destructive
1963 modification of the form's list structure. (reported by Brian
1965 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1966 move between its address being taken and the call to
1967 interrupt_thread, fixing a crashing race condition.
1968 * the SB-POSIX contrib implementation has been adjusted so that it
1969 no longer exhibits ridiculously poor performance when constructing
1970 instances corresponding to C structs.
1972 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1973 * minor incompatible change: the sb-grovel contrib now treats C
1974 structures as alien (in the sense of SB-ALIEN) objects rather than
1975 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1976 has implications for memory management of client code
1977 (sb-grovel-returned objects must now be manually managed) and for
1978 type safety (alien objects now have full types).
1979 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1980 used to control emission of compiler diagnostics, rather than the
1981 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1982 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1983 quality should be considered deprecated.
1984 * install.sh now installs the user manual as well
1985 * (not quite a new documentable feature, but worth considering in
1986 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1987 beginnings of a semantically meaningful condition hierarchy is
1988 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1990 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1991 designator as the defaults argument.
1992 * fixed bug: Displaced arrays whose displaced-to array has become
1993 too small now cause ARRAY-DIMENSION to signal an error, providing
1994 for safer bounds-checking. (reported by Bruno Haible)
1995 * fixed bug: DEFCLASS slot definitions with identical :READER and
1996 :WRITER names now signal a reasonable error. (reported by Thomas
1998 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2000 * fixed bug: Invalid slot specification errors now print correctly.
2001 (thanks to Zach Beane)
2002 * fixed bug 320: Shared to local slot value transfers in class
2003 redefinitions now happen corrently from superclasses as
2004 well. (reported by Bruno Haible)
2005 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2007 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2008 improper lists correctly. (reported by Bruno Haible)
2009 * fixed bug 313: source-transform for <fun-name> was erroneously
2010 applied to a call of a value of a variable with name <fun-name>.
2011 (reported by Antonio Menezes Leitao)
2012 * fixed bug 307: The obsolete instance protocol ensures that
2013 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2014 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2015 remove dead unknown-values globs from the middle of the stack.
2016 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2017 easier to resume long computations after using *BREAK-ON-SIGNALS*
2018 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2019 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2020 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2021 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2022 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2023 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2025 * fixed a (fairly theoretical) bug in string printing: if
2026 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2027 does not have array-element-type equal to the most general string
2029 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2030 function name. (thanks to Nikodemus Siivola)
2031 * fixed bug: compile-time format string checker failed on
2032 non-closed ~{. (reported by Thomas F Burdick)
2033 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2034 don't warn on legal loop code involving more than one aggregate
2035 boolean. (thanks to Nikodemus Siivola)
2036 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2037 in keyword position to MAKE-PACKAGE was not being reported as
2039 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2040 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2042 * fixed bugs 280 and 312: the checking for multiple definitions in a
2043 file is less likely to become confused by uses of inline
2045 * fixed bug: the #S reader macro performs the keyword coercion
2046 specified for slot names. (reported by Kalle Niemitalo)
2047 * fixed bug: lambda lists may contain symbols whose names start with
2048 & but are not lambda-list-keywords; their occurrence triggers a
2050 * fixed bug 321: define-method-combination argument lambda lists do
2051 not cause invalid code to be generated when &optional or &aux
2052 variables have default values. (reported by Bruno Haible)
2053 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2054 have CLOS classes; this appears also to have fixed reported
2055 instability in stack exhaustion detection.
2056 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2057 MUFFLE-WARNING when no associated restart is present is now
2059 * optimization: rearranged the expansion of various defining macros
2060 so that each expands into only one top-level form in a
2061 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2063 * optimization: used a previously little-used slot in symbols to
2064 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2066 * fixed some bugs revealed by Paul Dietz' test suite:
2067 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2069 ** Fixed an optimization bug related to inheritance of initforms
2070 from local to shared slots.
2071 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2072 ** CAST optimizer forgot to flush argument derived type.
2073 ** print/read consistency on floats is now orders of magnitude
2074 more likely. (thanks also to Bruno Haible for a similar report
2076 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2077 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2078 for objects of type REAL. Make it so.
2079 ** SXHASH is specified (infelicitously) to respect similarity,
2080 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2081 it so. (thanks to Markus Ziegler)
2082 ** on the Alpha, the compiler succeeds in compiling functions
2083 returning a known number of arguments greater than 63.
2084 ** fixed handling of invalid NIL arguments in keyword position
2086 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2088 ** provided a readably-printable representation for RANDOM-STATE
2090 ** ensured that pathnames, where they have a namestring, always
2091 print using #P"..." syntax.
2093 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2094 * Support for the forthcoming 2.0 version of the NetBSD kernel
2095 running on x86 hardware has been added. (thanks to Perry
2096 E. Metzger most immediately, and others for their past work)
2097 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2098 current release version; SBCL's OpenBSD support had been broken
2099 since about the time of OpenBSD's switch to ELF binary format.)
2100 * [placeholder for DX summary]
2101 ** user code with &REST lists declared dynamic-extent, under high
2102 speed or space and low safety and debug optimization policy.
2103 * The manual has been converted to Texinfo format and the debugger
2104 chapter from the cmucl manual has been added.
2105 * A facility has been added to extract documentation strings from
2106 sbcl and store them as Texinfo-formatted snippets for inclusion in
2107 the manual (via Texinfo's @include directive)
2108 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2109 the test case to Dave Roberts)
2110 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2111 pointers. (reported by Sean Ross)
2112 * bug fix: PROFILE output is printed nicely even for large numerical
2113 values. (thanks to Zach Beane)
2114 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2115 greater than 32 handle EOF correctly.
2116 * bug fix: on X86 an immediate argument of the IMUL instruction is
2117 correctly printed in disassembly. (thanks to Lutz Euler)
2118 * bug fix: class slots in redefined classes preserve their old
2119 values. (thanks to Bruno Haible and Nikodemus Siivola)
2120 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2121 succeeds. (reported by Marco Baringer)
2122 * fixed some bugs revealed by Paul Dietz' test suite:
2123 ** READ-SEQUENCE now works on ECHO-STREAMs.
2124 ** RATIONALIZE works more according to its specification. (thanks
2127 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2128 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2129 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2130 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2131 should matter to you only if you rebind the printer control
2132 variables and then find you want different bindings in the
2133 debugger than in the ordinary execution of your program.)
2134 * The runtime build system has been tweaked to support building
2135 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2136 assembler and linker. (thanks to Nikodemus Siivola)
2137 * Unbound, undefined, undeclared variables now trigger full
2138 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2139 more often programmer error than deliberate exploitation of undefined
2141 * optimization: the hash algorithm for strings has changed to one
2142 that is less vulnerable to spurious collisions. (thanks to Juho
2144 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2145 needless bounds checking. (thanks to Juho Snellman)
2146 * optimization: implemented multiplication as a modular
2147 (UNSIGNED-BYTE 32) operation on the PPC backend.
2148 * fixed some bugs revealed by Paul Dietz' test suite:
2149 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2151 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2152 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2153 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2155 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2157 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2159 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2160 their output stream on EOF from read.
2161 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2162 have been read to end-of-file.
2163 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2165 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2166 description of determination of which consecutive characters
2168 ** Printing the "Space" character with escaping on now yields "#\\ ",
2169 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2170 ** Reading floating-point numbers with *READ-BASE* set to a number
2171 less than 10 works correctly.
2172 ** Reading floating-point numbers with *READ-BASE* set to a number
2173 more than 10 works correctly.
2174 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2175 the readtable currently in effect.
2177 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2178 * minor incompatible change: parsing of namestrings on a physical
2179 (Unix) host has changed; numbers after the final #\. in a
2180 namestring are no longer interpreted as a version field. This is
2181 intented to be largely invisible to the user, except that the
2182 meaning of the namestring "*.*.*" has changed: it now refers to a
2183 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2184 should usually be replaced by
2185 (make-pathname :name :wild :type :wild :version :wild)
2186 with the added benefit that this is more likely to be portable.
2187 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2188 option to OPEN now signals an error if the file being opened
2189 exists; this may have an impact on existing code.
2190 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2191 signals received, on the PowerPC platforms (both Linux and
2192 Darwin). (thanks to Pierre Mai for pointing out the location of
2194 * several fixes on OS X: The system now builds and runs cleanly on
2195 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2196 (thanks to Brian Mastenbrook)
2197 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2198 second-resolution: integer multiples of 1/3600 between -24 and 24.
2199 (thanks to Vincent Arkesteijn)
2200 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2201 type when called with 1 argument; PEEK-CHAR checked type of
2202 PEEK-TYPE only after having read first character from a
2203 stream. (reported by Peter Graves)
2204 * bug fix: the garbage collector now has much better locality
2205 behaviour, and in particular no longer treats all memory as being
2206 exhausted when many small objects point to each other in a deeply
2208 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2209 recognized as being TYPEP their class.
2210 * bug fix: the PUSHNEW documentation string has been corrected.
2211 (thanks to Vincent Arkesteijn)
2212 * bug fix: defaulting of the value for the last of an atypically
2213 large number of multiple values being bound was not being
2214 performed correctly on the Alpha or PPC platforms
2215 * optimization: implemented multiplication as a modular
2216 (UNSIGNED-BYTE 32) operation on the x86 backend.
2217 * optimization: SEARCH on simple-base-strings can now be open-coded.
2218 (see also contrib/compiler-extras.lisp for inspiration for
2219 teaching the compiler about the Boyer-Moore algorithm).
2220 * value, returned by MAX (and MIN) called with several EQUALP, but
2221 not EQL, arguments now does not depend on compiler settings.
2222 * fixed some bugs revealed by Paul Dietz' test suite:
2223 ** in stack analysis liveness information is propagated from
2224 non-local entry points.
2225 ** pathwise CAST removing failed when the CAST node did not start
2227 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2228 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2230 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2231 host is already defined.
2232 ** RENAME-FILE works on streams instead of signalling an internal
2234 ** PEEK-CHAR uses the current readtable when determining whether
2235 or not a character is whitespace.
2236 ** MERGE-PATHNAMES handles the case when the pathname does not
2237 specify a name while the default-pathname specifies a version.
2238 ** Pathnames now stand a better chance of respecting print/read
2240 ** Attempting to use standardized file system operators with a
2241 pathname with invalid :DIRECTORY components signals a
2243 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2245 ** DIRECTORY on logical pathnames is more correct.
2246 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2247 signal a TYPE-ERROR if their argument is not a stream.
2248 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2249 designator argument does not designate a stream.
2250 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2251 examining the synonym.
2252 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2254 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2255 element-type larger than ([UN]SIGNED-BYTE 32).
2257 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2258 * When built with the :SB-FUTEX feature, threaded builds now take
2259 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2260 for faster/more reliable mutex and condition variable support.
2261 * Incompatible change (but one you probably shouldn't have been using
2262 anyway): the interface and code for arbitrating between multiple
2263 threads in the same user session has been redesigned.
2264 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2265 error when called without an explicit environment argument.
2266 (thanks to Nikodemus Siivola)
2267 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2268 confused about their position. (thanks to Adam Warner and Gerd
2270 * bug fix: Pretty printing backquoted forms with unquotations in the
2271 argument list position of various code constructs such as LAMBDA
2272 now works correctly. (reported by Paul Dietz)
2273 * bug fix: Pretty printing unquotations no longer loses all
2274 stream position information.
2275 * optimization: performance of string output streams is now less
2276 poor for multiple small sequence writes.
2277 * optimization: performance of CSUBTYPEP in the presence of complex
2278 expressions involving CONS and NOT many times has been improved.
2279 (reported by Paul Dietz)
2280 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2282 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2283 streams for the REPL, for the debugger, and so on. (thanks to
2285 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2286 * fixed some bugs revealed by Paul Dietz' test suite:
2287 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2288 is ignored if it is too small, rather than propagating through
2289 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2290 ** extremely complex negations of CONS types were not being
2291 sufficiently canonicalized, leading to inconsistencies in
2293 ** VALUES tranformer lost derived type.
2295 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2296 * fixed a bootstrapping bug: the build process no longer assumes
2297 that the various BOOLE-related constants have the same value in
2298 host and target lisps. (noted by Paul Dietz' test suite on an
2299 SBCL binary built from CLISP)
2300 * The system can now be dynamically linked on the MIPS platform,
2301 which enables dynamic loading of foreign code from Lisp. (thanks
2302 to Ralf Baechle for discussions on the MIPS ABI)
2303 * The system now records debugging information for its own source
2304 files in a filesystem-position-independent manner, relative to
2305 the "SYS" logical host.
2306 * fixed a compiler bug: MV-LET convertion did not check references
2307 to the "max args" entry point. (reported by Brian Downing)
2308 * tweaked disassembly notes to be less confident about proclaiming
2309 some instruction as an LRA. (thanks to Brian Downing)
2310 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2311 now each have their own history, command character, and other
2312 characteristics. (thanks to David Lichteblau)
2313 * fixed some bugs revealed by Paul Dietz' test suite:
2314 ** compiler failure in compiling LOGAND expressions including a
2316 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2317 shift greater than 32.
2318 ** FLUSH-DEST did not mark blocks for type check regeneration.
2319 ** HANDLER-CASE failed to accept declarations in handler clauses
2320 in some circumstances.
2322 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2323 * New code in contrib/sb-introspect (still probably not entirely
2324 stable yet) provides some support for smart Lisp development
2325 environments like SLIME.
2326 * The conditions signalled for errors occurring when loading .fasl
2327 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2328 in a way which should help ASDF recover gracefully.
2329 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2330 stuff has been cleaned up. If you code contrib/ stuff, this might
2331 affect you, and you can look at contrib/README, contrib/STANDARDS,
2332 and/or the 0.8.4.27 diff to check.
2333 * In full calls the compiler now does not generate checks for declared
2334 argument types for all arguments.
2335 * various threading fixes
2336 ** and some experimental patches which didn't make it into
2337 the main tree for this release, but which are shipped in
2338 contrib/experimental-thread.patch as a possible fix for some
2339 failures (deadlock, spinning...) in GC-intensive multithreaded
2341 * fixed PPC build problem (source code incompatibility of different
2342 library versions): added offsetof() hackery which attempts to divine
2343 where glibc maintainers put uc_mcontext today
2344 * fixed bug 282: compiler does not trust type assertions while passing
2345 arguments to a full call.
2346 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2347 &OPTIONAL VALUES type parameter.
2348 * fix bug 214: algorithm for noting rejected templates is now more
2349 similar to that of template seletion. (also reported by rydis on
2351 * fixed bug 141b: printing backquoted information readably and prettily
2352 inserts a space where necessary.
2353 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2354 (CHARACTER 10) are now reported as errors, rather than propagated
2355 as unknown types. (reported by piso on #lisp)
2356 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2357 with values NIL and :ERROR. (thanks to Milan Zamazal)
2358 * fixed bug 191c: CLOS now does proper keyword argument checking as
2359 described in CLHS 7.6.5 and 7.6.5.1.
2360 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2361 longer raise an error; further, using a list as a for-as-arithmetic
2362 counter now raises a meaningful error.
2363 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2364 now understood by sequence creation functions such as MAKE-SEQUENCE
2366 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2367 a STRING-INPUT-STREAM.
2368 * compiler enhancement: SIGNUM is now better able to derive the type
2370 * type declarations inside WITH-SLOTS are checked. (reported by
2372 * fixed some bugs revealed by Paul Dietz' test suite:
2373 ** incorrect optimization of TRUNCATE for a positive first
2374 argument and negative second.
2375 ** compiler failure in let-convertion during flushing dead code.
2376 ** compiler failure while deriving type of TRUNCATE on an
2377 interval, containing 0.
2378 ** ASH of a negative bignum by a negative bignum count now returns
2380 ** intersection of CONS types now canonicalizes properly, fixing
2381 inconsistencies in SUBTYPEP.
2383 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2384 * incompatible change: The --disable-debugger command line
2385 option now clobbers the debugger at a more fundamental
2386 level, by redefining #'INVOKE-DEBUGGER instead of by
2387 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2388 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2389 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2390 enter the debugger REPL and then suffer recursive errors
2391 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2392 while under the new system, BREAK in --disable-debugger mode
2393 terminates the system just as an unhandled error would.
2394 * fixed compiler performance when processing loops with a step >1;
2395 * bug fix: DOCUMENTATION now retrieves generic function
2396 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2397 support has been systematized, and now supports the methods
2398 specified by ANSI, along with a default method and a method for
2399 slot documentation. (reported by Nathan Froyd)
2400 * bug fix: effective methods associated with a generic function are
2401 no longer cached over a change of that generic function's method
2402 combination. (reported by Andreas Fuchs)
2403 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2404 names a non-existent directory. (thanks to Andreas Fuchs)
2405 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2406 the PPC platform, lead to stack corruption; this has been fixed.
2407 (reported by Rainer Joswig)
2408 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2409 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2410 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2411 arithmetic in general, is now much more reliable on the PPC
2413 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2414 platform now returns the right answer.
2415 * optimization: restored some effective method precomputation in
2416 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2417 precomputation is now tunable.
2418 * optimization: compiler-internal data structure use has been
2419 reviewed, and changes have been made that should improve the
2420 performance of the compiler by about 20%.
2421 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2422 simple-base-strings and simple-bit-vectors is improved.
2423 * optimization: the optimization of 32-bit logical and arithmetic
2424 functions introduced in version 0.8.3 on the x86 has been
2425 implemented on the mips, ppc and sparc platforms; an
2426 implementation of the same facility, but for 64-bit arithmetic,
2427 has been added for the alpha.
2428 * microoptimization: the compiler is better able to make use of the
2429 x86 LEA instruction for multiplication by constants.
2430 * bug fix: in some situations compiler did not report usage of
2431 generic arithmetic in (SPEED 3) policy.
2432 * bug 145b fix: compiler used wrong type specifier while converting
2433 MEMBER-types to numeric.
2434 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2436 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2437 index argument now works properly on the Alpha platform.
2438 * bug fix: floating point exception treatment on the Alpha platform
2440 * bug fix: FILE-POSITION works much better on string input and
2441 output streams. (thanks to Nikodemus Siivola)
2442 * bug fix: many threading/garbage collection symptoms sorted.
2443 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2444 might be pseudo-atomic.
2445 * internal change: Stopping for GC is now done with signals not
2446 ptrace. GC is now done in whichever thread wanted it, instead of
2448 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2450 * bug fix: result form in DO is not contained in the implicit
2452 * incompatible change: ICR structure is changed; the value part of
2453 CONTINUATION is now called LVAR; corresponding functions are
2454 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2455 * added type deriver for ISQRT (thanks to Robert E. Brown).
2456 * bug fix: better support for loading from the command line when an
2457 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2459 * fixed some bugs revealed by Paul Dietz' test suite:
2460 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2461 ** ROUND and FROUND now give the right answer when given very
2462 small float arguments.
2463 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2465 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2466 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2467 ** LCM should return a non-negative integer.
2468 ** PARSE-INTEGER returned the index of a terminator instead of the
2469 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2470 ** PARSE-INTEGER returned an incorrect index being applied to a
2472 ** LCM with two arguments of 0 returns 0 rather than signalling
2474 ** unsigned addition of a 32-bit constant with the high bit set no
2475 longer causes an internal compiler error on the x86.
2476 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2477 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2478 with negative last argument.
2479 ** byte specifiers with zero size and position no longer cause
2480 an error during type derivation.
2481 ** bignum multiplication on the Alpha platform now returns the
2483 * porting: The system now builds on SuSE AMD64, although it still
2484 generates a 32-bit binary.
2485 * .fasl file incompatibility: The fasl file version number has
2486 been incremented (because of the changes to internal compiler
2487 data structures referred to above).
2489 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2490 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2491 more accurately, on the Darwin kernel running on PowerPC hardware.
2492 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2493 * Compiler code deletion notes now signal a condition of type
2494 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2495 an associated MUFFLE-WARNING restart.
2496 * The compiler now performs limited argument count validation of
2497 constant format strings in FORMAT, and where appropriate in ERROR,
2498 CERROR and WARN. (thanks to Gerd Moellmann)
2499 * New ASDF-INSTALL contrib can be used for automatic download and
2500 installation of third-party Lisp code from CCLAN or other sites
2502 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2503 which forces another thread to execute a function supplied by the
2505 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2506 now accept and act upon their :ELEMENT-TYPE keyword argument.
2507 (reported by Martin Atzmueller, Edi Weitz)
2508 * bug fix: FILE-POSITION now accepts position designators up to
2509 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2510 is the greater. (thanks to Patrik Nordebo)
2511 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2512 Kalle Olavi Niemitalo)
2513 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2514 printable. (reported by Eric Marsden)
2515 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2516 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2517 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2518 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2519 (thanks to Stig Sandoe)
2520 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2521 UNREAD-CHAR now correctly includes the unread character in the
2522 target sequence. (thanks to Gerd Moellmann)
2523 * bug fix in threaded builds: the system can now be suspended and
2524 resumed by shell job control with minimal disruption.
2525 * bug fixes in times and timezones >2038AD
2526 * better handling of "where is GNU make?" problem in build scripts
2527 (thanks to Nikodemus Siivola)
2528 * new optimization: inside a named function any reference to a
2529 function with the same name is considered to be a self-reference;
2530 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2531 optimization quality.
2532 * new optimization on x86: logical functions and + now have
2533 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2534 used when the result is truncated to 32 bits.
2535 * VALUES declaration is partially enabled.
2536 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2537 * fixed some bugs revealed by Paul Dietz' test suite:
2538 ** The system now obeys the constraint imposed by
2539 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2540 types form a lattice under type intersection.
2541 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2542 ** ASSOC now ignores NIL elements in an alist.
2543 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2544 and (1+ MOST-POSITIVE-FIXNUM) answers.
2545 ** The addition of a method with invalid qualifiers to a generic
2546 function does not cause an error to be signalled immediately;
2547 a warning is signalled, and the error is generated only on
2548 calling the generic function.
2549 * changed .fasl file version number, in part to add type codes for
2550 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2551 obscure ANSI requirements
2553 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2554 * fixed bug 148: failure to inline-expand a local function left
2555 garbage, confusing the compiler.
2556 * fixed bugs 3cd: structure slot readers perform type check if the
2557 slot can have an invalid value (i.e. it is either not initialized
2558 or can be written with a less specific slot writer).
2559 * bug fix: the compiler now traps array references to elements off
2560 the end of an array; previously, the bounds checking in some
2561 circumstances could go off-by-one.
2562 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2564 * type declarations for array element types now obey the description
2565 on the CLHS page "Declaration TYPE", as per discussions on
2566 sbcl-help around 2003-05-08. This means that a declaration
2567 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2568 declaration, all references to BAR will be asserted or assumed
2569 (with THE, so dependent on compiler policy) to involve objects of
2570 type FOO. Note that no such declaration is implied in
2571 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2572 * declared types of functions from the "Conditions"
2573 chapter. (reported by Paul Dietz)
2574 * bug fix: CERROR accepts a function as its first argument.
2575 * bug fix: NTH an NTHCDR accept a bignum as index
2576 arguments. (reported by Adam Warner)
2577 * optimization: character compare routines now optimize comparing
2578 against a constant character. (reported by Gilbert Baumann)
2579 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2580 argument now works properly on the MIPS platform.
2581 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2582 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2583 declared to have a functional type, does not cause an error
2585 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2586 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2587 * fixed bug: if last continuation of a deleted block has a
2588 destination, this destination should be deleted too. (reported by
2590 * fixed a bug in the bootstrap process: the host compiler's values
2591 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2592 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2593 test case from Patrik Nordebo)
2594 * improved the ability of the disassembler on the PPC platform to
2595 provide helpful disassembly notes.
2596 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2597 the class in more cases than previously.
2598 * bug fix: FILE-POSITION now understands :START and :END for
2599 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2600 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2601 8) data. (thanks to David Lichteblau)
2602 * bug fix: it is possible to add a method to a generic function
2603 without lambda list.
2604 * bug fix: reader failed to signal END-OF-FILE inside an
2605 object representation. (reported by Nikodemus Siivola)
2606 * fixed some bugs revealed by Paul Dietz' test suite:
2607 ** LAST and [N]BUTLAST should accept a bignum.
2608 ** condition slot accessors are methods.
2609 ** (VECTOR NIL) is a subtype of STRING.
2611 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2612 * minor incompatible change: some nonsensical specialized lambda
2613 lists (used in DEFMETHOD) which were previously ignored now signal
2615 * minor incompatible change: the system is now aware of the types of
2616 variables in the COMMON-LISP package, and will signal errors for
2617 most violations of these type constraints (where previously they
2618 were silently accepted).
2619 * minor incompatible change: COMPILE-FILE now uses the freedom
2620 afforded (ANSI 3.2.2.3) to use derived function types for
2621 functions defined in the same file. This also permits the system
2622 to warn on static type mismatches and function
2623 redefinition. (Currently it does not work with high DEBUG level.)
2624 * minor incompatible change: VALUES declaration is disabled.
2625 * When issuing notes, the compiler now signals a condition of type
2626 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2627 restart for use in user handlers. It is expected that the
2628 COMPILER-NOTE condition will eventually become a condition
2629 supertype to a hierarchy of note types, which will then be
2630 handleable in a similar fashion. However, at the moment, no such
2631 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2632 but it's an implementation detail, not a classification for the
2634 * Changes in type checking closed the following bugs:
2635 ** type checking of unused values (192b, 194d, 203);
2636 ** template selection based on unsafe type assertions (192c, 236);
2637 ** type checking in branches (194bc).
2638 * A short form of VALUES type specifier has ANSI meaning (it has
2639 increased the number of situations when SBCL cannot perform type
2641 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2642 keywords or constants is permissible.
2643 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2644 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2645 classes. (thanks to Antonio Martinez)
2646 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2647 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2648 argument to a pretty-print stream. Instead, it leaves any such
2649 operations to DESCRIBE-OBJECT methods.
2650 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2652 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2653 lambda lists. (thanks to David Lichteblau)
2654 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2655 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2656 (thanks to Gerd Moellmann)
2657 * fixed bug 246: increased compilation speed of long
2658 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2660 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2662 * DEFCONSTANT now throws a condition of type
2663 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2664 constant to a non-EQL value; CONTINUE and ABORT restarts
2665 respectively change and preserve the value.
2666 * fixed bug 63: The code walker, part of the implementation of CLOS,
2667 is now better at handling symbol macros.
2668 * bug fix: There is no longer an internal implementation type named
2669 CL:LENGTH. (reported by Raymond Toy)
2670 * bug fix: In macro-like defining macros/special operators the
2671 implicit block does not enclose the lambda list.
2672 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2673 enclosed in parentheses) are not suitable as type specifiers, and
2674 their use properly signals an error now.
2675 * bug fix: An argument count mismatch for a type specifier in code
2676 being compiled no longer causes an unhandled error at compile
2677 time, but signals a compile-time warning.
2678 * fixed simple vector readable printing
2679 * bug fix: DESCRIBE takes more care over whether the class
2680 precedence list slot of a class is bound before accessing it.
2681 (reported by Markus Krummenacker)
2682 * bug fix: FORMATTER can successfully compile pretty-printer format
2683 strings which use variants of the ~* directive inside.
2684 * bug fix: SEARCH now applies its TEST predicate to the elements of
2685 the arguments in the correct order. (thanks to Wolfhard Buss)
2686 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2687 in type inference. (thanks to Robert E. Brown)
2688 * bug fix: Reading in symbols with an explicit package name of ""
2689 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2690 * fixed some bugs revealed by Paul Dietz' test suite:
2691 ** NIL is now allowed as a structure slot name.
2692 ** Arbitrary numbers, not just REALs, are allowed in certain
2693 circumstances in LOOP for-as-arithmetic clauses.
2694 ** Multiple class redefinitions before slot access no longer
2695 causes a type error.
2696 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2697 association between the name and a class.
2698 ** Generic functions with non-standard method-combination and over
2699 five methods all of which return constants no longer return NIL
2700 after the first few invocations. (thanks to Gerd Moellmann)
2701 ** CALL-NEXT-METHOD with no arguments now passes the original
2702 values of the arguments, even in the presence of assignment.
2703 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2705 ** DISASSEMBLE works with closures and funcallable instances.
2706 ** ADD-METHOD now returns the generic function, not the new method.
2707 ** FIND-METHOD signals an error if the lengths of the specializers
2708 is incompatible with the generic function, even if the ERRORP
2710 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2711 which its argument is a member.
2712 ** DEFCLASS only redefines the class named by its class-name
2713 argument if that name is the proper name of the class;
2714 otherwise, it creates a new class.
2715 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2716 of the UNBOUND-SLOT condition to the name of the slot.
2717 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2718 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2719 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2720 SLOT-MAKUNBOUND in the specified fashion.
2722 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2723 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2724 cross-compilation host. As a consequence, we can now bootstrap our
2725 way up to SBCL starting with a bare gcc toolchain and human-readable
2726 source code (first the source to CLISP, then the source to SBCL).
2727 * A contributed module containing a partial implementation of the
2728 simple-streams interface has been included. (thanks to Rudi
2730 * A contributed module implementing the RFC1321 Message Digest
2731 Algorithm, known as MD5, has been included.
2732 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2733 no longer has any effect, as the code controlled by this feature
2734 has been deleted. (As far as we know, no-one has ever built using
2735 this feature, and its semantics were confused in any case).
2736 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2737 work on conditions (as required by the ANSI specification),
2738 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2739 expected behaviour on conditions. Users should note, however,
2740 that such behaviour is not required by the ANSI specification,
2741 and so use of this behaviour may render their code unportable.
2742 * fixed some bugs revealed by Paul Dietz' test suite:
2743 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2745 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2746 ** SXHASH on condition objects no longer returns NIL.
2747 ** :ALLOCATION :CLASS slots are better treated; their values are
2748 updated on class redefinition, and initforms inherited from
2749 superclasses are applied.
2750 ** REMOVE-METHOD returns its generic function argument even when
2751 no method was removed.
2752 ** SHARED-INITIALIZE now initializes the values of the requested
2753 slots, including those with :ALLOCATION :CLASS.
2754 ** ALLOCATE-INSTANCE now works on structure classes defined via
2755 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2757 ** SLOT-EXISTS-P now works on conditions, as well as structures
2759 ** MAKE-LOAD-FORM now has the required methods on
2760 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2761 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2762 keyword, and now implements the SLOT-NAMES argument.
2763 ** methods with &OPTIONAL arguments no longer allow too many
2764 arguments to be passed in the call without error.
2765 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2766 option is consistent with the required arguments of the generic
2767 function lambda list.
2768 * bug fix: REQUIRE accepts a string designator. (Thanks to
2770 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2771 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2772 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2773 * bug fix: The compiler now checks for duplicated variables in macro
2775 * bug fix: SETQ on globals returns the correct value.
2776 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2777 not a COMPILER-ERROR (followed by some other strange error on
2778 choosing the CONTINUE restart).
2779 * bug fix: make.sh and friends are now more consistent in the way that
2780 they look for GNU "make".
2782 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2783 * experimental native threads support (on x86 Linux >=2.4 only).
2784 This is not compiled in by default: you need to add :SB-THREAD to
2785 the target features. See the "Beyond ANSI" chapter of the manual
2787 * fix for longstanding nonANSIism: The old distinction between
2788 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2789 The return value from CL:FIND-CLASS is now a CLOS class, and
2790 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2791 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2792 * An interface to the MetaObject Protocol, as described in Kiczales,
2793 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2794 MIT Press, 1991, is available from the SB-MOP package.
2795 * incompatible change: the SB-PCL package should now be considered
2796 a private implementation detail, and no longer a semi-private MOP
2798 * minor incompatible change: due to rearrangement for threads, the
2799 control stack and binding stack are now allocated at arbitrary
2800 addresses instead of being hardcoded per-port. Users affected by
2801 this probably have to be doing advanced things with shared
2802 libraries, and will know who they are.
2803 * minor incompatible change: Previously, all --eval forms used were
2804 processed with READ before any of them were processed with EVAL.
2805 Now each --eval form is processed with both READ and EVAL before
2806 the next --eval form is processed. (Thus package operations like
2807 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2808 work as the user might reasonably expect.)
2809 * minor incompatible change: *STANDARD-INPUT* is now only an
2810 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2812 * minor incompatible change: Y-OR-N-P is now character-oriented,
2813 not line oriented. Also, YES-OR-NO-P now works without errors.
2814 (thanks to Antonio Martinez)
2815 * sb-aclrepl module improvements: an integrated inspector, added
2816 repl features, and a bug fix to :trace command.
2817 * Known functions, which cannot be open coded by the backend, are
2818 considered to be able to check types of their arguments. (fixing
2819 a bug report by Nathan J. Froyd)
2820 * fixed a bug in computing method discriminating functions: It is
2821 now possible to define methods specialized on classes which have
2822 forward-referenced superclasses. (thanks to Gerd Moellmann)
2823 * fixed evaluation order in optional entries (reported by Gilbert
2825 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2826 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2827 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2828 required-by-AMOP NAME argument, as well as CLASS and
2829 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2830 * fixed bug 20: DEFMETHOD can define methods using names that are
2831 not the proper names of classes to designate class specializers.
2832 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2833 Unix file descriptors, instead of blowing up. (thanks to Antonio
2835 * Garbage collection refactoring: user-visible change is that a
2836 call to the GC function during WITHOUT-GCING will not do garbage
2837 collection until the end of the WITHOUT-GCING. If you were doing
2838 this you were probably losing anyway.
2839 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2840 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2841 TYPEP the latter but not the former.
2842 * The compiler issues a full WARNING for calls to undefined functions
2843 with names from the CL package.
2844 * MAP-INTO for a vector destination is open coded. (reported by
2845 Brian Downing on c.l.l)
2846 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2847 documentation string.
2848 * fixed some bugs revealed by Paul Dietz' test suite:
2849 ** COPY-ALIST now signals an error if its argument is a dotted
2851 ** Condition slots are now accessed more correctly in the presence
2852 of multiple initargs for a given slot.
2853 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2854 exclude restarts of the same name associated with a different
2856 ** DEFCLASS of forward-referenced classes with another
2857 forward-referenced class in the superclasses list no longer
2859 ** Condition slots are now initialized once each, not multiple
2860 times. (thanks to Gerd Moellmann)
2861 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2863 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2864 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2865 arguments contain duplicated elements.
2866 ** RESTART-CASE understands local macros.
2867 ** RESTART-CASE associates exactly its own restarts with a condition.
2868 ** ENDP in safe mode checks its argument to be of type LIST.
2869 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2870 in question is unbound.
2871 ** Optimized MAKE-INSTANCE functions no longer cause internal
2872 assertion failures in the presence of duplicate initargs.
2873 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2874 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2875 propagated even in the ctor optimized implementation of
2877 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2879 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2880 * a better implementation of SXHASH on (simple) bit vectors,
2881 measured both in execution speed and in distribution of results
2882 over the positive fixnums, has been installed. Likewise, a better
2883 implementation of EQUAL for simple bit vectors is now available.
2884 * fixed CEILING optimization for a divisor of form 2^k.
2885 * fixed bug 240 (emitting extra style warnings "using the lexical
2886 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2887 by Antonio Martinez)
2888 * fixed SXHASH, giving different results for NIL depending on type
2889 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2890 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2891 variable. (found by Rolf Wester)
2892 * SBCL does not ignore type declarations for special
2893 variables. (reported by rif on c.l.l 2003-03-05)
2894 * some bug fixes in contrib/sb-aclrepl/
2895 * fixed some bugs revealed by Paul Dietz' test suite:
2896 ** a bug in the CONS type specifier, whereby the CAR and CDR
2897 types got intertwined, has been fixed;
2898 ** the type system is now able to reason about the interaction
2899 between INTEGER and RATIO types more completely;
2900 ** APPEND, [N]REVERSE and NRECONC check that those their
2901 arguments, which must be proper lists, are really so;
2902 ** An array specialized to be unable to hold elements has been
2903 implemented, as required -- yes, really -- by ANSI;
2904 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2905 on malformed property lists;
2907 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2908 * incompatible packaging change: in line with Unix convention,
2909 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2910 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2911 * REQUIRE and PROVIDE are now optionally capable of doing something
2912 useful. See the documentation string for REQUIRE.
2913 * infrastructure for a managed SBCL contrib system: contributed
2914 modules in this release include:
2915 ** the ASDF system definition facility;
2916 ** an interface to the BSD Sockets API;
2917 ** an ACL-like convenience interface to the repl;
2918 (thanks to Kevin Rosenberg)
2919 ** an implementation of ROTATE-BYTE, with efficient implementation
2921 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2922 gives a closer approximation to the right answer than previously.
2923 (thanks to Raymond Toy)
2924 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2925 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2926 optional environment arguments, as required by ANSI.
2927 * fixed bugs in other functions taking environment objects, allowing
2928 calls with an explicit NIL environment argument to be compiled
2930 * fixed bug 228: primary return values from
2931 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2932 COMPILE or FUNCTION.
2933 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2934 :TYPE will no longer signal errors on innocuous objects.
2935 * fixed bug 231b: SETQ is better at respecting type declarations in
2936 the lexical environment.
2937 * fixed a bug in DEFCLASS: classes named by symbols with no or
2938 unprintable packages can now be defined.
2939 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2940 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2941 * fixed compiler failure related to checking types of functions.
2942 (reported by Robert E. Brown)
2943 * the compiler is now much more consistent in its error-checking
2944 treatment of bounding index arguments to sequence functions: in
2945 (SAFETY 3) code, errors will be signalled in almost all cases if
2946 invalid sequence bounding indices are passed to functions defined
2947 by ANSI to operate on sequences.
2948 * fixed a bug in the build procedure: documentation of SBCL-specific
2949 packages is now preserved and available in the final Lisp image.
2950 * lifted FDEFINITION lookup out of loops in the implementation of
2951 many list operations. (thanks to Robert E. Brown)
2952 * fixed a bug in the reader: the #n# reader macro now works for
2953 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2954 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2955 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2956 E. Brown and Tony Martinez respectively)
2957 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2958 SLOT-BOUNDP: in particular, it is now able to optimize them much
2959 better, and is now not vulnerable to having packages renamed.
2960 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2961 always called when a slot is not present in an instance. (thanks
2963 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2964 longer signal an error on unreading a character following EOF on
2965 the previous constituent stream. (thanks to Tony Martinez)
2966 * fixed some bugs revealed by Paul Dietz' test suite:
2967 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2968 not just nonnegative fixnums;
2969 ** the logical bit-array operators such as BIT-AND now accept an
2970 explicit NIL for their "opt-arg" argument (to indicate a
2971 freshly-consed result bit-array);
2972 ** ELT now signals an error on an invalid sequence index in safe
2974 ** the type system is now cleverer about negations of numeric
2975 types, and consequently understands the BIGNUM and RATIO types
2977 ** the type system is now cleverer about the interaction between
2978 INTEGER and RATIO types: while bugs still remain, many more
2979 cases are accurately computed;
2980 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2981 if it is in the last clause;
2982 ** CONSTANTLY now correctly returns a side-effect-free function in
2984 ** DECLARE is no longer treated as a special-operator; in
2985 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2986 * incremented fasl file version number due to the change in the
2987 DEFSTRUCT-SLOT-DESCRIPTION structure.
2989 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2990 * minor incompatible change: code processed by the "interpreter" or
2991 EVAL now has a compilation optimization policy of (DEBUG 2)
2992 (changed from (DEBUG 1)) to improve debuggability of interactive
2993 development, and to allow the use of the debug RETURN command in
2995 * an experimental implementation of the RETURN command for the
2996 debugger has been included. (thanks to Frederik Kuivinen)
2997 * fixed bug 62: constraints were not propagated into a loop.
2998 * fixed bug in embedded calls of SORT (reported and investigated by
3000 * fixed some bugs revealed by Paul Dietz' test suite:
3001 ** printing and reading of arrays with some dimensions having
3002 length 0 (thanks to Gerd Moellmann);
3003 ** BOA constructor with &AUX argument without a default value does
3004 not cause a type error;
3005 ** CONSTANTP now returns true for all self-evaluating objects.
3007 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3008 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3009 accessors that are related by inheritance, as specified in the
3010 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3011 Valtteri Vuorikoski)
3012 * The compiler is now able to inline functions that were defined in
3013 a complex lexical environment (e.g. inside a MACROLET).
3014 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3016 * Support for the upcoming FreeBSD-5.0 release has been included.
3017 (thanks to Dag-Erling Smorgrav)
3018 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3019 effect when it is not in a toplevel context.
3020 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3021 stand a better chance of being correct. (thanks to Gerd
3023 * fixed bug in COERCE, which now signals an error on coercing a
3024 rational to a bounded real type which excludes the expected
3026 * The compiler is now able to derive types more accurately from the
3027 COERCE and COMPILE functions.
3028 * fixed bug 223: functional binding is considered to be constant
3029 only for symbols in the CL package.
3030 * fixed bug 231: SETQ did not check the type of a variable being set
3031 (reported by Robert E. Brown)
3032 * A new optimization for MAKE-INSTANCE has been included, fixing
3033 various bugs (including relating to :ALLOCATION :CLASS slots and
3034 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3036 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3037 ** As required by ANSI, LOOP now disallows anonymous collection
3038 clauses such as COLLECT I in conjunction with aggregate boolean
3039 clauses such as THEREIS (= I 1);
3040 ** LOOP now signals an error when any variable is reused in the
3041 same loop (including the potentially useful construct analogous
3042 to WITH A = 1 WITH A = (1+ A);
3043 ** IT is only a special loop symbol within the first clause of a
3044 conditional loop clause;
3045 ** LOOP with a typed iteration variable over a hashtable now
3046 signals a type error iff it should.
3047 * fixed some other bugs revealed by Paul Dietz' test suite:
3048 ** FILE-STREAM now names the class previously known as FD-STREAM;
3049 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3050 argument) no longer signals an error;
3051 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3052 of the slot symbol, rather than using the current package
3053 ((:CONC-NAME "") continues to intern the slot's name in the
3055 * incremented fasl file version number, because of the incompatible
3056 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3057 of the new implementation of DEFINE-COMPILER-MACRO.
3059 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3060 * Support for building SBCL for MIPS platforms running in
3061 little-endian mode has now been checked in, and basic
3062 functionality on said platforms verified.
3063 * minor incompatible change: PCL now records the pathname of a file
3064 in which methods and the like are defined, rather than its
3066 * minor incompatible change: TRUENAME now considers the truename of
3067 a file naming a directory to be the pathname with :DIRECTORY
3068 component indicating that directory.
3069 * minor incompatible change: a NAMED clause in the extended form of
3070 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3071 reason for the previous behaviour is unclear.
3072 * more systematization and improvement of CLOS and MOP conformance
3073 in PCL (thanks to Gerd Moellman and Pierre Mai):
3074 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3076 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3077 primary methods with no specializers;
3078 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3080 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3081 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3082 FORWARD-REFERENCED-CLASSes; error reporting on
3083 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3085 ** SXHASH on CLOS instances now uses a slot internal to the
3086 instance to return different numbers on distinct instances,
3087 while preserving the same return value through invocations of
3089 ** DEFMETHOD signals errors when methods with longer incongruent
3090 lambda lists are added to generic functions;
3091 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3092 CLASS, as specified in AMOP;
3093 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3094 on the order returned by the primary method for classes of
3095 class STANDARD-CLASS;
3096 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3097 * fixed some bugs shown by Paul Dietz' test suite:
3098 ** DOLIST puts its body in TAGBODY;
3099 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3101 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3102 value producing form;
3103 ** if more variables are given to PROGV than values, extra
3104 variables are bound and made to have no value;
3105 ** NSUBSTITUTE on list arguments gets the right answer with
3107 ** ELT signals an error of type TYPE-ERROR when the index argument
3108 is not a valid sequence index;
3109 ** LOOP signals (at macroexpansion time) an error of type
3110 PROGRAM-ERROR when duplicate variable names are found;
3111 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3112 ** FUNCALL of special-operators now cause an error of type
3114 ** PSETQ now works as required in the presence of side-effecting
3115 symbol-macro places;
3116 ** NCONC accepts any object as its last argument;
3117 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3119 ** loop-for-as-package does not require a package to be explicitely
3121 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3123 * fixed bug 166: compiler preserves "there is a way to go"
3124 invariant when deleting code.
3125 * fixed bug 172: macro lambda lists with required arguments after
3126 &REST arguments now cause an error to be signalled. (thanks to
3128 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3129 bug. (thanks to Matthew Danish)
3130 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3132 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3133 arguments are lexically rebound. (thanks to Gerd Moellmann and
3135 * fixed bug 194: error messages are now more informative when there
3136 is no primary method applicable in a call to a generic
3137 function. (thanks to Gerd Moellmann)
3138 * fixed bug in command line argument checking (thanks to Julian
3140 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3141 (thanks to Matthew Danish)
3142 * incremented fasl file version number, because of the
3143 SXHASH-related changes in the layout of CLOS data structures
3145 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3146 * minor incompatible change: The runtime (the Unix executable named
3147 "sbcl") is now much pickier about the .core files it will load.
3148 Essentially it now requires .core files to descend from the same
3149 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3150 as the runtime does. (The intent is to prevent the crashes which
3151 can occur, and which can even be reported as mysterious failures,
3152 when people patch the sources or change the build parameters
3153 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3154 sbcl and .core files.)
3155 * fixed bug: VALUES-LIST is no longer optimized away.
3156 * fixed bug 142: The FFI conversion of C string values to Lisp
3157 string values no longer conses excessively. (thanks to Nathan
3158 Froyd porting Raymond Toy's fix to CMU CL)
3159 * began to systematize and improve MOP conformance in PCL (thanks to
3160 Nathan Froyd, Gerd Moellman and Pierre Mai):
3161 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3163 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3164 ** FINALIZE-INHERITANCE is now called on class finalization;
3165 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3166 argument precedence order.
3167 * fixed bug 202: The compiler no longer fails on functions whose
3168 derived types contradict their declared type.
3169 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3170 so it can be non-toplevel.
3171 * The fasl file version number has changed (because of the new
3172 implementation of DEFMACRO).
3173 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3174 safe code, that any length requirement by their type-specifier
3175 argument is valid. The exceptions to this are described in bug
3177 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3178 functions now check the types of their inputs as required by ANSI.
3179 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3180 introduced symbol is DECLAREd to be SPECIAL.
3181 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3182 * fixed bug: :COUNT argument to sequence functions may be negative
3183 * fixed bug: body of DO-SYMBOLS may contain declarations
3184 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3185 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3186 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3187 symbol macro only once
3188 * fixed printing of call frame when argument list is unavailable
3189 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3190 * compiler no longer signals WARNING on unknown keyword
3193 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3194 * A beta-quality port to the mips architecture running Linux,
3195 based on the old CMUCL backend, has been made. It has been tested
3196 on a big-endian kernel, and works sufficiently well to be able to
3197 rebuild itself; it has not been tested in little-endian mode.
3198 * fixed an inconsistency between gencgc.c and purify.c which made
3199 dumping/loading .core files unreliable
3200 * fixed bug 120a: The compiler now deals correctly with IFs where
3201 the consequent is the same as the alternative, instead of
3202 misderiving the return type. (thanks to Alexey Dejneka)
3203 * fixed bug 113: Logical pathnames are now dumpable (the logical
3204 host is resolved at load-time, throwing an error if it is not
3206 * fixed bug 174: FORMAT's error message is slightly clearer when a
3207 non-printing character is used in a format directive.
3208 * fixed several bugs in compiler checking of type declarations, i.e.
3209 violations of the Python "declarations are assertions" principle
3210 (thanks to Alexey Dejneka)
3211 * fixed several bugs in PCL's error checking (thanks to Gerd
3213 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3215 * fixed bug in compilation of functions as first class values
3216 (thanks to Antonio Martinez-Shotton)
3217 * The compiler's handling TYPE-ERRORs which it can prove will
3218 inevitably happen at runtime has been cleaned up and corrected
3219 in several ways. (thanks to Alexey Dejneka)
3220 * improved argument type checking for various basic arithmetic
3221 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3222 lavished on them in the past that they can be compiled in many
3223 ways in different special cases
3224 * fixed bug 181: compiler checks validity of user supplied type
3226 * cleaned up code flushing in optimization: Function calls which
3227 should signal errors for safety purposes (e.g. which ANSI says
3228 should signal errors when their arguments are of incorrect type)
3229 are no longer optimized away.
3230 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3231 * incremented fasl file version number, because changes in the
3232 implementation of sequence functions like COERCE caused
3233 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3234 in old inline expansions) to become undefined. (Actually these
3235 changes were later undone, so we might very well be binary
3236 compatible with 0.7.7 after all, but leaving the version number
3237 incremented seemed like the simplest and most conservative
3240 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3241 * An alpha-quality port to the parisc architecture running Linux,
3242 based on the old CMUCL backend, has been made. This, even more so
3243 than the other backends, should be considered still a work in
3244 progress; known problems include that the Linux kernel in 64-bit
3245 mode does not propagate the correct sigcontext structure to
3246 userspace, and consequently SBCL on a parisc64 kernel will not
3248 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3249 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3250 suppressed.) Also now that the compiler is looking at declarations
3251 in the environment, it checks optimization declarations as well,
3252 and suppresses inlining when (> DEBUG SPEED).
3253 * More fixes have been made to treatment of floating point exception
3254 treatment and other Unix signals. In particular, floating point
3255 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3256 * The detection and handling of control stack exhaustion (infinite
3257 or very deeply nested recursion) has changed. Stack exhaustion
3258 detection is now done by write-protecting pages at the OS level
3259 and applies at all optimization settings; when found, a
3260 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3261 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3262 be caught using IGNORE-ERRORS.
3263 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3264 correctly when transforming recursive LABELS functions to LETs.
3265 (thanks to Alexey Dejneka)
3266 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3267 that are names of constants or global variables.
3268 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3269 alien routines with docstrings.
3270 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3271 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3273 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3274 (thanks to Eric Marsden)
3275 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3276 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3277 * Bug fix: The SPARC backend can now compile functions involving
3278 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3279 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3280 to a functions expecting a PATHNAME-DESIGNATOR.
3281 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3282 lambda lists. (thanks to Alexey Dejneka)
3283 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3284 functions so that EXPORTing the name of the class doesn't cause
3285 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3286 to Antonio Martinez for reporting this)
3287 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3288 constant-folded without failing an assertion. (thanks to Einar
3289 Floystad Dorum for reporting this)
3290 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3291 types are now dealt with more correctly by the compiler.
3292 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3293 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3294 behaviour analogous to RENAME-FILE. This puts its behaviour more
3295 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3297 * The fasl file version number has changed again. (because of the
3298 bug fix involving the names of PCL MAKE-INSTANCE functions)
3300 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3301 * bug fix: Floating point exceptions are treated much more
3302 consistently on the x86/Linux and PPC/Linux platforms.
3303 * Array initialization with :INITIAL-ELEMENT is now much faster for
3304 cases when the compiler cannot open code the array creation, but
3305 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3306 array accesses have also seen a speed increase.
3307 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3308 specified. (This was at the root of some bad interactions between
3309 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3311 * bug fix: Internal error arguments for undefined functions are now
3312 computed correctly on the PPC/Linux platform.
3313 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3314 Raymond Toy's patch for CMU CL)
3315 * Support for the Solaris 9 operating environment has been included
3316 (thanks to Daniel Merritt)
3317 * A very ugly but hopefully complete draft of the missing FFI chapter
3318 of the manual has been created by reformatting the corresponding
3319 CMU CL manual chapter into (currently very ugly and incoherent)
3320 DocBook and bringing it up to date for SBCL behavior. Thus, the
3321 manual is now essentially complete, at least by my extreme
3322 once-and-only-once standards, whereby it's acceptable to refer to
3323 the doc strings of SB-EXT functions as the primary documentation.
3324 * The fasl file version number has changed again, due to cleanup of
3325 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3326 is no longer a static symbol.)
3328 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3329 * SBCL now builds with OpenMCL (version 0.12) as the
3330 cross-compilation host; also, more progress has been made toward
3331 bootstrapping under CLISP.
3332 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3334 * bug 158 fixed: The compiler can now deal with integer loop
3335 increments different from 1; fixing this turned out also to fix
3337 * bug 169 fixed: no more bogus warnings about using lexical bindings
3338 despite the presence of perfectly good SPECIAL declarations (thanks
3339 to David Lichteblau)
3340 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3341 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3342 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3344 * bug 180 fixed: Method combination specifications no longer ignore
3345 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3346 * bug fix: Structure type predicate functions now check their argument
3347 count as they should.
3348 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3349 correctly. (thanks to Pierre Mai)
3350 * minor incompatible change: The --noprogrammer option is deprecated
3351 in favor of the new --disable-debugger option, which is very similar.
3352 (The major difference is that it takes effect at a slightly different
3353 time at startup, causing handling of errors in --sysinit and
3354 --userinit files will be affected differently.) The
3355 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3356 been added to allow this functionality to be controlled from ordinary
3357 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3358 maintainers, who might want to run non-interactive scripts to
3359 build SBCL cores which will later be used interactively.)
3360 * minor incompatible change: The LOAD function no longer, when given
3361 a wild pathname to load, loads all files matching that pathname.
3362 Instead, an error of type FILE-ERROR is signalled.
3364 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3365 * bug 147 fixed: The compiler preserves its block link/count
3366 invariants more correctly now so that it doesn't crash. (thanks
3368 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3370 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3371 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3372 no-value-for-this-character as NIL (as specified by ANSI).
3373 * HOST-NAMESTRING on physical pathnames now returns a string that is
3374 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3375 (thanks to Christophe Rhodes)
3376 * The Alpha port handles icache flushing more correctly. (thanks to
3378 * More progress has been made toward bootstrapping under CLISP. (thanks
3379 to Christophe Rhodes)
3380 * The fasl file format has changed again, because dynamic loading
3381 on OpenBSD (which has non-ELF object files) motivated some cleanups
3382 in the way that foreign symbols are transformed and passed around.
3383 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3384 is no longer treated as whitespace by the reader, but instead as
3385 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3386 |A
\7fB|, instead of A as it used to.
3388 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3389 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3390 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3391 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3392 this as of 0.7.1.45, but was left out of the previous news section
3393 (thanks to Dan Barlow)
3394 * SBCL now runs on the Solaris operating system on SPARC architectures
3395 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3396 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3397 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3398 * SPARC backend cleanups, allowing builds of cores optimized for V8
3399 and V9 SPARCS, and also emission of code targeted to a particular
3400 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3402 * SBCL is closer to bootstrapping under CLISP, thanks to various
3403 fixes by Christophe Rhodes.
3404 * The fasl file format has changed again, to allow the compiler's
3405 INFO database to support symbol macros.
3406 * The user manual (in doc/) is formatted into HTML more nicely.
3407 (thanks to coreythomas)
3408 * The system is smarter about SUBTYPEP relationships, especially
3409 those involving NOT types (including types such as ATOM which are
3410 represented internally using NOT types). Thus SUBTYPEP is less
3411 likely to return (VALUES NIL NIL) in general, and in particular
3412 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3414 * The fasl file format has changed again, because the internal
3415 representation of types now includes a new slot to support the new
3416 SUBTYPEP-of-NOT-types logic.
3417 * (not a change in the main branch of SBCL, but a related prototype
3418 which can hopefully be merged into the main branch of SBCL in the
3419 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3420 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3421 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3422 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3423 dispatch macro character combinations. (thanks to Alexey Dejneka)
3424 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3425 that superficially look like logical namestrings correctly.
3426 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3428 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3429 default supplied-p) for &optional and &key arguments. (thanks to
3432 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3433 * incompatible change: The compiler is now less aggressive about
3434 tail call optimization, doing it only when (> SPACE DEBUG) or
3435 (> SPEED DEBUG). (This is an incompatible change because there are
3436 programs which relied on the old CMU-CL-style behavior to optimize
3437 away their unbounded recursion which will now die of stack overflow.)
3438 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3439 for non-GENCGC systems has been increased to 20M (since that
3440 seems much closer to the likely performance optimum for modern
3441 systems than the old 4M value was)
3442 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3443 and *DEBUG-PRINT-LEVEL*
3444 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3445 of CMU CL's support for SPARC, and various endianness and other
3446 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3447 * new syntactic sugar for the Unix command line: --load foo.bar is now
3448 an alternate notation for --eval '(load "foo.bar")'.
3450 ** The system now detects stack overflow and handles it gracefully,
3451 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3452 optimization settings. (This is a good thing in general, and
3453 its introduction in this version should be particularly timely
3454 for anyone whose code fails because of suppression of tail
3456 ** The system now hunts for the C variable "environ" in a more
3457 devious way, to avoid segfaults when the C library version differs
3458 between compile time and run time. (thanks to Christophe Rhodes)
3459 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3460 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3461 ** The compiler no longer issues bogus style warnings for undefined
3462 classes in the same source file as the DEFCLASSes which defined
3463 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3465 ** fixes in CONDITION class precedence list for undefined function
3466 errors (thanks to Alexei Dejneka)
3467 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3468 correctly. (thanks to Dan Barlow)
3469 ** portability fixes aiming at bootstrapping under CLISP (thanks
3470 to Dave McDonald and Christophe Rhodes)
3471 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3472 ** fixes in type translation and and type inference (thanks to
3474 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3475 ** various fixes in the new ports (thanks to Dan Barlow)
3476 * several changes related to debugging:
3477 ** suppression of tail recursion, as noted above
3478 ** stack overflow detection, as noted above
3479 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3480 is now the default. (For some time encapsulation has been more
3481 reliable than the breakpoint-based :ENCAPSULATE NIL
3482 implementation, at least on X86 systems; and I just noticed that
3483 encapsulation also seems closer to the spirit of the ANSI
3486 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3488 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3489 up properly again. (There was a packaging bug in 0.7.0 which
3490 left their definitions in SB-SYS::LOAD-FOREIGN and
3491 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3492 vital for most things which interface to C-level interfaces,
3493 like extensions working with sockets or databases or
3494 Perl-compatible regexes or whatever, and the need to fix
3495 this bug is the main reason that 0.7.1 was released so
3497 ** DEFGENERIC is now choosier about the methods it redefines, so that
3498 reLOADing a previously-LOADed file containing DEFGENERICs does
3499 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3500 cycle now works as it should. (thanks to Alexey Dejneka)
3501 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3502 fixed by Christophe Rhodes. (He actually submitted this patch
3503 months ago, and I delayed until after 0.7.0.)
3504 ** Bug 111 (internal compiler confusion about runtime checks on
3505 FUNCTION types) was fixed by Alexey Dejneka.
3506 * Some internal cleanups (getting rid of variables which aren't
3507 needed now that the byte interpreter is gone) caused the fasl
3508 file format number to change again.
3510 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3511 * major incompatible change: The default fasl file extension, i.e. the
3512 default extension for files produced by COMPILE-FILE, has changed
3513 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3515 ** There are many changes in the implementation of the compiler.
3516 SBCL is now essentially a compiler-only implementation of ANSI
3517 Common Lisp. EVAL still "interprets" a few special cases, but
3518 almost all the interesting cases are handled by creating
3519 a LAMBDA expression, calling COMPILE on it, then calling
3520 FUNCALL on the result.
3521 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3522 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3523 Since the code is newer, there might still be some new bugs
3524 (though not as many as before Martin Atzmueller's fixes:-). But
3525 the new code is substantially simpler and clearer, and hopefully
3526 any remaining bugs will be simpler, less fundamental, and more
3527 fixable then the bugs in the old code.
3528 ** The revised compiler is still a little unsteady on its feet.
3530 *** The debugging information it produces (particularly the names
3531 of FUNCTION objects) is sometimes much less useful than what
3532 the old compiler produced.
3533 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3534 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3535 within a MACROLET) has been temporarily weakened.
3536 ** There are new compiler optimizations for various functions:
3537 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3538 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3539 *** the math functions TRUNCATE, FLOOR, and CEILING
3540 *** the function-of-all-trades COERCE
3541 Mostly these should be transparent, but there's one
3542 potentially-annoying problem (bug 117): when the compiler
3543 inline-expands a function and does type analysis on the result,
3544 it can create control paths which have type mismatches, and
3545 when it can't prove that those control paths aren't taken,
3546 it will issue WARNINGs about the type mismatches. This is
3547 a particular problem in practice for the new sequence functions.
3548 It's not clear how this should be fixed, and for now, a
3549 workaround is given in the entry for 117 in the BUGS file.
3550 ** (Because of the interaction between the two previous items --
3551 occasional inlining problems and new inline expansions -- some
3552 of the new sequence function optimizations won't really kick in
3553 completely until debugging information, and then inlining, are
3554 straightened out in some future version.)
3555 * minor incompatible changes:
3556 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3557 DIRECTORY no longer implicitly promotes NIL slots of its
3558 pathname argument to :WILD. In particular, when you ask for the
3559 contents of a directory (which you used to be able to do without
3560 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3561 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3562 ** changes in behavior that ANSI explicitly defines to be
3563 implementation dependent:
3564 *** The new compiler-only implementation still conforms with ANSI,
3565 but acts a little different than before. Besides the obvious
3566 changes in performance tradeoffs (that the cost per form passed
3567 to EVAL has gone up, and the cost per form executed by EVAL
3568 has gone down), the behavior of the system changes a little
3569 because there are no longer any interpreted function objects.
3570 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3571 e.g. doing COMPILE on the output of interactive DEFUN is
3573 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3575 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3576 has changed from (:CL) to NIL.
3577 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3578 e.g. #\Newline and #\Tab, don't have names specified in the
3579 ANSI Common Lisp standard, is now based on their ASCII symbolic
3580 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3581 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3582 are no longer used for output.
3583 ** changes in internal implementation constants:
3584 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3585 4 million. (If your application spends a lot of time GCing and
3586 you have a lot of RAM, you might want to experiment with
3587 increasing it even more.)
3588 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3589 However, almost all old code should still continue to work without
3590 immediate update, as SB-C-CALL is now a (deprecated) nickname
3592 ** Old operator names in the style DEF-FOO are now deprecated in
3593 favor of new corresponding names DEFINE-FOO, for consistency with
3594 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3595 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3596 internal symbols, but a few supported extensions like
3597 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3598 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3599 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3600 etc. as you get deeper into recursive calls to the debugger
3601 command loop, instead of the old "5]", "5]]", "5]]]"
3602 sequence. (I was motivated to do this when squabbles between
3603 ILISP and SBCL left me very deeply nested in the debugger. In the
3604 short term, this change will probably provoke more ILISP/SBCL
3605 squabbles, but hopefully it will be an improvement in the long run.)
3606 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3607 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3608 function, since declaiming return types involving aliens is
3609 (1) annoyingly messy to do by hand and (2) vital to efficient
3610 compilation of code which calls such functions.
3611 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3612 longer reexported by the SB-EXT package. They're solely useful
3613 for alien code, so it seems more logical that you should get
3614 them from the SB-ALIEN package, not in SB-EXT.
3615 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3616 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3617 features. Instead, the code that they used to control is always
3618 built into the system.
3619 * many other bug fixes
3620 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3621 advantage of the new EVAL-WHEN stuff and to clean them up in
3622 general, and they are now more ANSI-compliant in a number of
3623 ways. Martin Atzmueller is responsible for a lot of this.
3624 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3626 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3627 *** correct ERROR type for various file operations
3628 *** some fixes for Lisp streams
3629 *** DEFMETHOD syntax checking
3630 *** changing old weird representation of debug information as
3631 strings (which, among their other deficiencies, don't transform
3632 correctly when you rename packages, and don't change their
3633 print representation when you change things like *PACKAGE*
3634 and *PRINT-LENGTH*) to symbols and lists of symbols
3635 He also made several improvements and fixed several bugs in DESCRIBE.
3636 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3638 *** misbehavior of WRITE-STRING/WRITE-LINE
3639 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3640 and several other LOOP problems as well
3641 *** DIRECTORY when similar filenames are present
3642 *** DEFGENERIC with :METHOD options
3643 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3644 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3645 *** argument ordering in FIND with :TEST option
3646 *** mishandled package designator argument in APROPOS-LIST
3647 *** various problems in the backquote readmacro
3648 *** a bug in APROPOS
3649 *** probably some others that I'm not describing very well here,
3650 since the CVS log documents them by reference to sbcl-devel
3651 messages, and the SourceForge archives aren't working well.:-(
3652 ** Dan Barlow improved the Alpha port (and is making progress on the
3653 PPC port, for those of you who think different).
3654 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3655 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3656 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3657 continues to work on the SPARC port (for those of you in a position
3658 to look down upon our little PC-compatible boxes from a great height).
3659 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3660 and uses that copy, rather than the current dynamic value, when
3661 it's trying to decide whether to truncate output. Thus e.g.
3662 (let ((*print-lines* 50))
3663 (pprint-logical-block (stream nil)
3665 (let ((*print-lines* 8))
3666 (print (aref possiblybigthings i) stream)))))
3667 should now truncate the logical block only at 50 lines, instead of
3668 often truncating it at 8 lines, as it did before.
3669 * The doc/cmucl/ directory, containing old CMU CL documentation
3670 from the time of the fork, is no longer part of the base system.
3671 SourceForge has shut down its anonymous FTP service, and with it
3672 my original plan for distributing the old CMU CL documentation
3673 there. For now, if you need these files you can download an old
3674 SBCL source release and extract them from it.
3675 * The fasl file version number changed again, for dozens of reasons,
3676 some of which are apparent above.
3678 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3679 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3680 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3681 patch, so that DISASSEMBLE output is much nicer.
3682 * The code in the SB-PROFILE package now seems reasonably stable.
3683 I still haven't decided what the final interface should look like
3684 (I'd like PROFILE to interact cleanly with TRACE, since both
3685 facilities use function encapsulation) but if you have a need
3686 for profiling now, you can probably use it successfully with
3687 the current CMU-CL-style interface.
3688 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3689 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3690 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3691 link now returns the dangling link itself, and for similar
3692 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3693 link itself. (In these cases the old code signalled an error and
3694 looped endlessly, respectively.) Thus, DIRECTORY now works even
3695 in the presence of dangling and cyclic symbolic links.
3696 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3697 is now a supported extension again, since the consensus on
3698 sbcl-devel was that it can be useful for ordinary development
3699 work, not just for debugging SBCL itself.
3700 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3701 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3702 that currently-defined functions might be redefined later with
3703 different return types.
3704 * Hash tables can be printed readably, as inspired by CMU CL code
3705 of Eric Marsden and SBCL code of Martin Atzmueller.
3706 * better error handling in CLOS method combination, thanks to
3707 Martin Atzmueller porting Pierre Mai's CMU CL patches
3708 * more overflow fixes for >16Mbyte I/O buffers
3709 * A bug in READ has been fixed, so that now a single Ctrl-D
3710 character suffices to cause end-of-file on character streams.
3711 In particular, now you only need one Ctrl-D at the command
3712 line (not two) to exit SBCL.
3713 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3715 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3716 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3717 does the right thing.
3718 * The implementation of some type tests, especially for CONDITION
3719 types, is now tidier and maybe faster, due to CMU CL code
3720 originally by Douglas Crosher, ported by Martin Atzmueller.
3721 * Some math functions have been fixed, and there are new
3722 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3723 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3724 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3725 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3726 likely to be built into sbcl-0.7.0.)
3727 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3728 CL, ported to SBCL by Martin Atzmueller)
3729 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3730 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3731 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3732 * There's a new slam.sh hack to shorten the edit/compile/debug
3733 cycle for low-level changes to SBCL itself, and a new
3734 :SB-AFTER-XC-CORE target feature to control the generation of
3735 the after-xc.core file needed by slam.sh.
3736 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3737 COMPILE-FILE is no longer supported, so that now every function
3738 gets an entry point, so that block compilation looks a little
3739 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3740 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3741 returns the number of bytes consed since the system started,
3742 rather than the number consed since the first time the function
3743 was called. (The new definition parallels ANSI functions like
3744 CL:GET-INTERNAL-RUN-TIME.)
3745 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3746 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3747 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3748 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3749 * Fasl file version numbers are now independent of the target CPU,
3750 since historically most system changes which required version
3751 number changes have affected all CPUs equally. Similarly,
3752 the byte fasl file version is now equal to the ordinary
3755 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3756 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3757 is no longer recognized. I apologize for this, because it was
3758 listed in SB-EXT as a supported extension, but I found that
3759 its existing behavior was poorly specified, as well as incorrectly
3760 specified, and it looked like too much of a mess to straighten it
3761 out. I have enough on my hands trying to get ANSI stuff to work..
3762 * many patches ported from CMU CL by Martin Atzmueller, with
3763 half a dozen bug fixes in pretty-printing and the debugger, and
3764 half a dozen others elsewhere
3765 * fixed bug 13: Floating point infinities are now supported again.
3766 They might still be a little bit flaky, but thanks to bug reports
3767 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3768 as flaky as they were.
3769 * The --noprogrammer command line option is now supported. (Its
3770 behavior is slightly different in detail from what the old man
3771 page claimed it would do, but it's still appropriate under the
3772 same circumstances that the man page talks about.)
3773 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3774 are now supported, and enabled by default. Thus, the compiler can
3775 handle many floating point and complex operations much less
3776 inefficiently. (Thus e.g. you can implement a complex FFT
3778 * The compiler now detects type mismatches between DECLAIM FTYPE
3779 and DEFUN better, and implements CHECK-TYPE more correctly, and
3780 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3781 thanks to patches from Martin Atzmueller.
3782 * various fixes to make the cross-compiler more portable to
3783 ANSI-conforming-but-different cross-compilation hosts (notably
3784 Lispworks for Windows, following bug reports from Arthur Lemmens)
3785 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3786 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3787 fixed thanks to Pierre Mai's CMU CL patches.
3788 * fixes to keep the system from overflowing internal counters when
3789 it tries to use i/o buffers larger than 16M bytes
3790 * fixed bug 45a: Various internal functions required to support
3791 complex special functions have been merged from CMU CL sources.
3792 (When I was first setting up SBCL, I misunderstood a compile-time
3793 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3794 * improved support for type intersection and union, fixing bug 12
3795 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3796 more obscure bugs as well
3797 * some steps toward byte-compiling non-performance-critical
3798 parts of the system, courtesy of patches from Martin Atzmueller
3799 * Christophe Rhodes has made some debian packages of sbcl at
3800 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3801 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3802 stable, but are nonetheless usable. When he's ready, I'd be happy
3803 to add them to the SourceForge "File Releases" section. (And if
3804 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3805 * new fasl file format version number (because of changes in
3806 internal representation of (OR ..) types to accommodate the new
3807 support for (AND ..) types, among other things)
3809 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3810 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3812 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3814 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3815 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3816 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3817 * DESCRIBE now works on structure objects again.
3818 * Most function call argument type mismatches are now handled as
3819 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3820 know whether the function will be redefined before the call is
3821 executed. (The compiler could flag local calls with full WARNINGs,
3822 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3823 it doesn't keep track of enough information to know whether calls
3824 are local in this sense.)
3825 * Compiler output is now more verbose, with messages truncated
3826 later than before. (There should be some supported way for users
3827 to override the default verbosity, but I haven't decided how to
3828 provide it yet, so this behavior is still controlled by the internal
3829 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3830 src/compiler/ir1util.lisp.)
3831 * Fasl file format version numbers have increased again, because
3832 support for the Gray streams extension changes the layout of the
3833 system's STREAM objects.
3834 * The Gray subclassable streams extension now works, thanks to a
3835 patch from Martin Atzmueller.
3836 * The full LOAD-FOREIGN extension (not just the primitive
3837 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3838 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3839 but like most other programs, it defaults to copying the Unix
3840 environment from the original process instead of starting the
3841 new process in an empty environment.
3842 * Extensions which manipulate the Unix environment now support
3843 an :ENVIRONMENT keyword option which doesn't smash case or
3844 do other bad things. The CMU-CL-style :ENV option is retained
3845 for porting convenience.
3846 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3847 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3849 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3851 * A patch from Martin Atzmueller seems to have solved the SIGINT
3852 problem, and as far as we know, signal-handling now works cleanly.
3853 (If you find any new bugs, please report them!)
3854 * The system no longer defaults Lisp source file names to types
3855 ".l", ".cl", or ".lsp", but only to ".lisp".
3856 * The compiler no longer uses special default file extensions for
3857 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3858 seems to expect a single default extension for all compiled code,
3859 and there's no compelling reason to try to stretch the standard
3860 to allow two different extensions.) Instead, byte-compiled files
3861 default to the same extension as native-compiled files.
3862 * Fasl file format version numbers have increased again, because
3863 a rearrangement of internal implementation packages made some
3864 dumped symbols in old fasl files unreadable in new cores.
3865 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3866 many fewer weird special cases.
3867 * Bug #17 (differing COMPILE-FILE behavior between logical and
3868 physical pathnames) has been fixed, and some related misbehavior too,
3869 thanks to a patch from Martin Atzmueller.
3870 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3871 by Tim Moore, ported to SBCL by Martin Atzmueller.
3872 * Martin Atzmueller fixed several filesystem-related problems,
3873 including bug #36, in part by porting CMU CL patches, which were
3874 written in part by Paul Werkowski.
3875 * More compiler warnings in src/runtime/ are gone, thanks to
3876 more patches from Martin Atzmueller.
3877 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3880 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3882 * DESCRIBE now works on CONDITION objects.
3883 * The debugger now handles errors which arise when trying to print
3884 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3886 * The build system now uses an additional file, customize-target-features.lisp,
3887 to allow local modifications to the target *FEATURES* list. (The point of
3888 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3889 debugging features enabled, without having to worry about propagating it
3890 into everyone's system when I do a "cvs update".) When no
3891 customize-target-features.lisp file exists, the target *FEATURES* list
3892 should be constructed the same way as before.
3893 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3894 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3895 warn about behavior which is undefined under the ANSI spec. Note: This
3896 is specified by ANSI, but it's not very popular with programmers.
3897 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3898 macro in the SBCL sources for an example of a workaround which you
3899 might use to make portable ANSI-standard code which does what you want.
3900 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3901 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3902 when it's used as a non-toplevel form. (This is required in order
3903 to implement the DEFCONSTANT-EQX macro.)
3904 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3905 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3906 funny things, due to bugs in the implementation of EVAL-WHEN
3907 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3908 non-toplevel DEFCONSTANTs are uncommon.)
3909 * The core file version number and fasl file version number have been
3910 incremented, because the old noncompliant DEFCONSTANT behavior involved
3911 calling functions which no longer exist, and because I also took the
3912 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3913 * fixed bug 1 (error handling before read-eval-print loop starts), and
3914 redid debugger restarts and related debugger commands somewhat while
3916 ** The QUIT debugger command is gone, since it did something
3917 rather different than the SB-EXT:QUIT command, and since it never
3918 worked properly outside the main toplevel read/eval/print loop.
3919 Invoking the new TOPLEVEL restart provides the same functionality.
3920 ** The GO debugger command is also gone, since you can just invoke
3921 the CONTINUE restart directly instead.
3922 ** The TOP debugger command is also gone, since it's redundant with the
3923 FRAME 0 command, and since it interfered with abbreviations for the
3925 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3927 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3928 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3929 some porting work by Martin Atzmueller)
3930 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3931 with a boatload of patches which he ported to SBCL. Now that those
3933 ** The system tries to make sure that its low-priority messages
3934 are prefixed by semicolons, to help people who like to use
3935 syntax highlighting in their ILISP buffer. (This patch
3936 was originally due to Raymond Toy.)
3937 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3938 patches originally written by Raymond Toy.
3939 ** The compiler understands coercion between single-value and
3940 multiple-VALUES type expressions better, getting rid of some very
3941 weird behavior, thanks to patches originally by Robert MacLachlan
3942 and Douglas Crosher.
3943 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3944 lambda lists, thanks to a patch originally by Pierre Mai.
3945 ** The system no longer bogusly warns about "abbreviated type
3947 ** The compiler gets less confused by inlining and RETURN-FROM,
3948 thanks to some patches originally by Tim Moore.
3949 ** The system no longer hangs when dumping circular lists to fasl
3950 files, thanks to a patch originally from Douglas Crosher.
3951 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3952 undefined function error.
3953 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3954 in structure slot initforms) for now, documented workaround instead:-|
3955 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3956 * fixed bug 5: added stubs for various Gray stream functions called
3957 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3958 installed, at least appropriate type errors are generated
3959 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3960 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3961 consistently in DEFMETHOD forms.
3962 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3963 it doesn't seem to affect SBCL after all
3964 * The C runtime system now builds with better optimization and many
3965 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3967 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3969 * The system is now under CVS at SourceForge (instead of the
3970 CVS repository on my home machine).
3971 * The new signal handling code has been tweaked to treat register
3972 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3973 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3974 downstream, e.g. in debug-int.lisp, has implicit dependencies
3975 on the unsignedness of integer representation of machine words,
3976 and that caused the system to bomb out with infinite regress
3977 when trying to recover from type errors involving signed values,
3978 e.g. (BUTLAST '(1 2 3) -1).)
3979 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3980 (This was one of the bugs Peter Van Eynde reported back in July.)
3981 * The system now uses code inspired by Colin Walters' O(N)
3982 implementation of MAP (from the cmucl-imp@cons.org mailing
3983 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3984 inline the MAP operation, and there is more than one
3985 sequence argument to the MAP call (so that it can't just
3986 do ETYPECASE once and for all based on the type of the
3987 single sequence argument). (The old non-inline implementation
3988 of the general M-argument sequence-of-length-N case required
3989 O(M*N*N) time when any of the sequence arguments were LISTs.)
3990 * The QUIT :UNIX-CODE keyword argument has been renamed to
3991 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3992 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3994 * Raymond Wiker's patches to port dynamic loading from Linux to
3995 FreeBSD have been added.
3996 * The BUGS file is now more nearly up to date, thanks in large part
3997 to Martin Atzmueller's review of it.
3998 * The debugger now flushes standard output streams before it begins
3999 its output ("debugger invoked" and so forth).
4000 * The core version number and fasl file version number have both
4001 been incremented, because of incompatible changes in the layout
4003 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4004 used to not be called for a saved Lisp image.)
4005 * Martin Atzmueller's version of a patch to fix a compiler crash,
4006 as posted on sbcl-devel 13 September 2000, has been installed.
4007 * Instead of installing Martin Atzmueller's patch for the
4008 compiler transform for SUBSEQ, I deleted the compiler transform,
4009 and transforms for some similar consing operations.
4010 * A bug in signal handling which kept TRACE from working on OpenBSD
4012 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4013 away by constant folding
4014 * The system now defines its address space constants in one place
4015 (in the Lisp sources), and propagates them automatically elsewhere
4016 (through GENESIS and the sbcl.h file). Therefore, patching the
4017 address map is less unnecessarily tedious and error-prone. The
4018 Lisp names of address space constants have also been systematized.
4019 * CVS tags like dollar-Header-dollar have been removed from
4020 the sources, because they have never saved me trouble and
4021 they've been source of trouble working with patches and other
4022 diff-related operations.
4023 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4024 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4026 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4028 * The system has been ported to OpenBSD.
4029 * The system now compiles with a simple "sh make.sh" on the systems
4030 that it's supported on. I.e., now you no longer need to tweak
4031 text in the target-features.lisp-expr and symlinks in src/runtime/
4032 by hand, the make.sh takes care of it for you.
4033 * The system is no longer so grossly inefficient when compiling code
4034 involving vectors implemented as general (not simple) vectors (VECTOR T),
4035 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4036 which dares to use the various sequence functions on non-simple
4037 vectors, takes less of a performance hit.
4038 * There is now a primitive type predicate VECTOR-T-P
4039 to test for the (VECTOR T) type, so that e.g.
4040 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4041 can now be compiled with some semblance of efficiency. (The old code
4042 turned the type declaration into a full call to %TYPEP at runtime!)
4043 * AREF on (VECTOR T) is still not fast, since it's still compiled
4044 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4045 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4046 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4047 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4048 without making full calls to SUBTYPEP at runtime.
4049 (Some analogous efficiency issues for non-simple vectors specialized to
4050 element types other than T, or for non-simple multidimensional arrays,
4051 have not been addressed. They could almost certainly be handled the
4052 same way if anyone is motivated to do so.)
4053 * The changes in array handling break binary compatibility, so
4054 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4055 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4056 instead of (VALUES T T).
4057 * By following the instructions that Dan Barlow posted to sbcl-devel
4058 on 2 July 2000, I was able to enable primitive dynamic object
4059 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4060 functionality is not implemented (since it calls ld to resolve
4061 library references automatically, requiring RUN-PROGRAM for its
4062 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4063 try to resolve library references) is now supported.
4064 * The system now flushes the standard output streams when it terminates,
4065 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4066 them at several other probably-convenient times, e.g. in each pass of
4067 the toplevel read-eval-print loop, and after evaluating a form given
4068 as an "--eval" command-line option. (These changes were motivated by a
4069 discussion of stream flushing issues on cmucl-imp in August 2000.)
4070 * The source transform for TYPEP of array types no longer assumes
4071 that an array whose element type is a not-yet-defined type
4072 is implemented as an array of T, but instead punts, so that the
4073 type will be interpreted at runtime.
4074 * There is now some support for cross-compiling in make.sh: each of
4075 the phases of make.sh has its own script. (This should be transparent
4076 to people doing ordinary, non-cross-compile builds.)
4077 * Since my laptop doesn't have hundreds of megabytes of memory like
4078 my desktop machine, I became more motivated to do some items on
4079 my to-do list in order to reduce the size of the system a little:
4080 ** Arrange for various needed-only-at-cold-init things to be
4081 uninterned after cold init. To support this, those things have
4082 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4083 symbols with such names are now uninterned after cold init).
4084 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4085 fasl files for cold load.
4086 ** Remove the old compiler structure pooling code (which used to
4087 be conditional on the target feature :SB-ALLOC) completely.
4088 ** Redo the representation of some data in cold init to be more compact.
4089 (I also looked into supporting byte compiled code at bootstrap time,
4090 which would probably reduce the size of the system a lot, but that
4091 looked too complicated, so I punted for now.)
4092 * The maximum signal nesting depth in the src/runtime/ support code has
4093 been reduced from 4096 to 256. (I don't know any reason for the very
4094 large old value. If the new smaller value turns out to break something,
4095 I'll probably just bump it back up.)
4096 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4098 * Many, many bugs reported by Peter Van Eynde have been added to
4099 the BUGS list; some have even been fixed.
4100 * While enabling dynamic object file loading, I tried to make the
4101 code easier to understand, renaming various functions and variables
4102 with less ambiguous names, and changing some function calling
4103 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4104 * While trying to figure out how to do the OpenBSD port, I tried to
4105 clean up some of the code in src/runtime/. In particular, I dropped
4106 support for non-POSIX signal handling, added various comments,
4107 tweaked the code to reduce the number of compilation warnings, and
4108 renamed some files to increase consistency.
4109 * To support the new automatic configuration functionality in make.sh,
4110 the source file target-features.lisp-expr has been replaced with the
4111 source file base-target-features.lisp-expr and the machine-generated
4112 file local-target-features.lisp-expr.
4113 * fixed a stupid quoting error in make.sh so that using CMU CL
4114 "lisp -batch" as cross-compilation host works again
4116 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4118 * DESCRIBE no longer tries to call itself recursively to describe
4119 bound/fbound values, so that it no longer fails on symbols which are
4120 bound to themselves (like keywords, T, and NIL).
4121 * DESCRIBE now works on generic functions.
4122 * The printer now prints less-screwed-up representations of closures
4123 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4124 * A private symbol is used instead of the :EMPTY keyword previously
4125 used to mark empty slots in hash tables. Thus
4126 (DEFVAR *HT* (MAKE-HASH-TABLE))
4127 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4128 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4129 now does what ANSI says that it should. (You can still get
4130 similar noncompliant behavior if bang on the hash table
4131 implementation with all the symbols you get back from
4132 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4133 This breaks binary compatibility, since tests for equality to
4134 :EMPTY are wired into things like the macroexpansion of
4135 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4137 * There's now a minimal placeholder implementation for CL:STEP,
4138 as required by ANSI.
4139 * An obscure bug in the interaction of the normal compiler, the byte
4140 compiler, inlining, and structure predicates has been patched
4141 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4142 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4144 * Missing ordinary arguments in a macro call are now detected even
4145 when the macro lambda list contains &KEY or &REST.
4146 * The debugger no longer complains about encountering the top of the
4147 stack when you type "FRAME 0" to explicitly instruct it to go to
4148 the top of the stack. And it now prints the frame you request even
4149 if it's the current frame (instead of saying "You are here.").
4150 * As specified by ANSI, the system now always prints keywords
4151 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4153 * The default initial SIZE of HASH-TABLEs is now smaller.
4154 * Type information from CLOS class dispatch is now propagated
4155 into DEFMETHOD bodies, so that e.g.
4156 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4158 is now basically equivalent to
4159 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4160 (DECLARE (TYPE SINGLE-FLOAT X))
4162 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4163 operation, without having to do run-time type dispatch.
4164 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4165 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4166 * Since I don't seem to be making big file reorganizations very often
4167 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4168 is overflowing my ability to conveniently back them up), I've finally
4169 checked the system into CVS. (The CVS repository is on my home system,
4170 not at SourceForge -- putting it on SourceForge might come later.)
4171 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4172 high-level GC-NOTIFY-FOO functions send their output. (There's
4173 still very little control of where low-level verbose GC functions
4174 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4175 less than it used to -- the GC-NOTIFY-FOO functions are now under
4176 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4177 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4178 in only one place in the source code, and propagates it automatically
4179 everywhere that it's needed. Thus e.g. when I bump the version from
4180 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4181 * The C source files now include boilerplate legalese and documentation
4182 at the head of each file (just as the Lisp source files already did).
4183 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4184 to his page will be replaced with a link to his new CLiki service.
4186 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4188 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4189 * The build process now looks for GNU make under the default name "gmake",
4190 instead of "make" as it used to. If GNU make is not available as "gmake"
4191 on your system, you can change this default behavior by setting the
4192 GNUMAKE environment variable.
4193 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4194 can build without error under CMU CL.
4196 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4198 * There is now a partial SBCL user manual (with some new text and some
4199 text cribbed from the CMU CL manual).
4200 * The beginnings of a profiler have been added (starting with the
4201 CMU CL profiler and simplifying and cleaning up). Eventually the
4202 main interface should be through the TRACE macro, but for now,
4203 it's still accessed through vaguely CMU-CL-style functions and macros
4204 exported from the package SB-PROFILE.
4205 * Some problems left over from porting CMU CL to the new
4206 cross-compilation bootstrap process have been cleaned up:
4207 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4208 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4209 part when getting rid of the compiler *BACKEND* stuff.)
4210 ** The value of *NULL-TYPE* was screwed up, because it was
4211 being initialized before the type system knew the final
4212 definition of the 'NULL type. This screwed up several key
4213 optimizations in the compiler, causing inefficiency in all sorts
4214 of places. (I found it because I wanted to understand why
4215 GET-INTERNAL-RUN-TIME was consing.)
4216 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4217 PROCLAIM FTYPE information. Unfortunately this broke binary
4218 compatibility again, since now the forms output by DEFGENERIC
4219 to refer to functions which didn't exist in 0.6.3.
4220 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4221 can use the new (as of 0.6.3) transform for SOME into MAP into
4223 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4224 values to (INTEGER 0 1000000), so that the time code will no longer
4225 occasionally get blown up by Linux returning 1000000 microseconds
4226 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4227 its output conform to the ANSI spec. (Alas, this makes its output
4228 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4229 * A full call to MAP NIL with a single sequence argument no longer conses.
4230 * fixes to problems pointed out by Martin Atzmueller:
4231 * The manual page no longer talks about multiprocessing as though
4232 it were currently supported.
4233 * The ILISP support patches have been removed from the distribution,
4234 because as of version 5.10.1, ILISP now supports SBCL without us
4235 having to maintain patches.
4236 * added a modified version of Raymond Toy's recent CMU CL patch for
4237 EQUALP comparison of HASH-TABLE
4239 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4241 * The system still can't cross-compile itself with
4242 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4243 entails), but at least it can compile more of itself that way
4244 than it used to be able to, and various buglets which were uncovered
4245 by trying to cross-compile itself that way have now been fixed.
4246 * This release breaks binary compatibility again. This time
4247 at least I've incremented the FASL file format version to 2, so that the
4248 problem can be detected reliably instead of just causing weird errors.
4249 * various new style warnings:
4250 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4251 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4252 ** using the lexical binding of a variable named in the *FOO* style
4253 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4254 as specified by ANSI.
4255 * *RANDOM-STATE* is no longer automatically initialized from
4256 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4257 default behavior of the system is to repeat its behavior every time
4258 it's run. If you'd like to change this behavior, you can always
4259 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4260 old convention there was no comparably easy way to get the system to
4261 repeat its behavior every time it was run.
4262 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4263 FTYPE declarations has been removed, in favor of their ANSI
4264 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4265 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4266 the types of their sequence arguments can be determined at compile time.
4267 This is done through a new open code expansion for MAP which eliminates
4268 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4269 argument types can be determined at compile time.
4270 * The optimizer now transforms COERCE into an identity operation when it
4271 can prove that the coerced object is already of the correct type. (This
4272 can be a win for machine generated code, including the output of other
4273 optimization transforms, such as the MAP transform above.)
4274 * Credit information has been moved from source file headers into CREDITS.
4275 * Source file headers have been made more standard.
4276 * The CASE macro now compiles without complaining even when it has
4279 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4281 * (Note that the way that the PCL macroexpansions were rewritten
4282 to accommodate the change in DEFGENERIC below breaks binary
4283 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4284 not run under sbcl-0.6.2. Once we get out of alpha releases,
4285 i.e. hit release 1.0.0, we'll probably try to maintain binary
4286 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4287 and sbcl-1.4.4. Until then, however, it might be fairly common
4288 for maintenance releases to break binary compatibility.)
4289 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4291 * The reporting of unhandled signals has been changed to print some
4292 explanatory text as well as the report form. (Previously only
4293 the report form was printed.)
4294 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4295 it defines, so that the compiler no longer issues undefined function
4296 warnings for compiled-but-not-yet-loaded generic functions.
4297 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4298 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4299 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4300 section of the ANSI spec are supported.
4301 * The "" nickname for the "KEYWORD" package has been removed.
4302 The reader still handles symbol tokens which begin with a package marker
4303 as keywords, but it doesn't expose its mechanism for doing so in the
4304 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4305 * The system now issues STYLE-WARNINGs for contradictory TYPE
4306 proclamations. (Warnings for contradictory FTYPE proclamations would
4307 be nice too, but those can't be done usefully unless the type system
4308 is made smarter about FUNCTION types.)
4309 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4310 systematized, so that "*target-*.lisp is supposed to exist only on the
4311 target and imply that there's a related file which exists on the
4312 host, and *host-*.lisp is supposed to exist only on the host and imply
4313 that there's a related file which exists on the target. This involves a
4314 lot of renaming. Hopefully the acute confusion caused by the renaming
4315 will be justified by the reduction in chronic confusion..
4316 ** runtime-type.lisp -> early-target-type.lisp
4317 ** target-type.lisp -> late-target-type.lisp
4318 ** early-host-format.lisp -> early-format.lisp
4319 ** late-host-format.lisp -> late-format.lisp
4320 ** host-error.lisp -> misc-error.lisp
4321 ** early-error.lisp -> early-target-error.lisp
4322 ** late-error.lisp -> late-target-error.lisp
4323 ** host-defboot.lisp -> early-defboot.lisp
4324 ** code/misc.lisp -> code/target-misc.lisp
4325 ** code/host-misc.lisp -> code/misc.lisp
4326 ** code/numbers.lisp -> code/target-numbers.lisp
4327 ** code/early-numbers.lisp -> numbers.lisp
4328 ** early-host-type.lisp -> early-type.lisp
4329 ** late-host-type.lisp -> late-type.lisp
4330 ** host-typep.lisp -> typep.lisp
4331 ** load.lisp -> target-load.lisp
4332 ** host-load.lisp -> load.lisp
4333 ** host-disassem.lisp -> disassem.lisp
4334 ** host-insts.lisp -> insts.lisp
4335 ** byte-comp.lisp -> target-byte-comp.lisp
4336 ** host-byte-comp.lisp -> byte-comp.lisp
4337 ** host-signal.lisp -> signal.lisp
4338 ** host-defstruct.lisp -> defstruct.lisp
4339 ** late-target-type.lisp -> deftypes-for-target.lisp
4340 Furthermore, several other previously target-only files foo.lisp (e.g.
4341 hash-table.lisp and random.lisp) have been split into a target-and-host
4342 foo.lisp file and a target-only target-foo.lisp file, with their key type
4343 definitions in the target-and-host part, so that the cross-compiler will
4344 know more about target types.
4345 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4346 gone away. In their place are various *BACKEND-FOO* variables
4347 corresponding to the slots of the old structure.
4348 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4349 into the target SBCL has been fixed.
4350 * The chill.lisp system for loading cold code into a running SBCL
4352 * Support for the CMU CL "scavenger hook" extension has been removed.
4353 (It was undocumented and unused in the CMU CL sources that SBCL was
4354 derived from, and stale in sbcl-0.6.1.)
4355 * Various errors in the cross-compiler type system were detected
4356 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4357 (enabling various consistency checks). Many of them were fixed,
4358 but some hard problems remain, so the compiler is back to
4359 running without *TYPE-SYSTEM-INITIALIZED* for now.
4360 * As part of the cross-compiler type system cleanup, I implemented
4361 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4362 * I have started adding UNCROSS calls throughout the type system
4363 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4364 on cross-compiler input files will be able to go away, and various
4366 * CONSTANTP now returns true for quoted forms (as explicitly required
4369 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4371 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4372 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4373 (MAKE-LIST -1). In the longer term, it ought to become true
4374 that declarations are assertions even at SAFETY 1. For now, it's not
4375 quite true even at SAFETY 3, but it's at least more nearly true..
4376 (Note that this change seems to increases the size of the system by
4377 O(5%) and to decrease the speed of the compiler by 20% or more.)
4378 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4379 for the problem of printing dozens of lines of distracting information
4380 about low-level system machinery as part of the top stack frame
4381 on entry to the debugger when an undefined function was called.
4382 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4383 is not reset to COMMON-LISP-USER.
4384 * Compilation of stuff related to dyncount.lisp has been made conditional
4385 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4386 smaller. The various dyncount-related symbols have been moved into
4387 a new "SB-DYNCOUNT" package.
4388 * tty-inspect.lisp has been renamed to inspect.lisp.
4389 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4390 feature has gone away. (When we eventually port to other flavors of
4391 libc and/or Unix, we'll try to make the differences between flavors
4392 invisible at the user level.)
4393 * Various other *FEATURES* tags, and/or their associated conditionals,
4394 have been removed if obsolescent, or given better documentation, or
4395 sometimes given more-mnemonic names.
4397 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4399 * tidied up "make.sh" script
4400 * tidied up system directory structure
4401 * better "clean.sh" behavior
4402 * added doc/FOR-CMUCL-DEVELOPERS
4403 * many many small tweaks to output format, e.g. removing possibly-confusing
4404 trailing #\. character in DESCRIBE-INSTANCE
4405 * (EQUALP #\A 'A) no longer signals an error.
4406 * new hashing code, including EQUALP hashing
4407 * tidied up Lisp initialization and toplevel
4408 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4409 * command line argument processing
4410 * added POSIX-GETENV function to deal with Unix-ish environment variables
4411 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4412 terminating SBCL on EOF
4413 * non-verbose GC by default
4414 * There is no more "sbcl" shell script; the sbcl file is now the C
4415 runtime executable (just like CMU CL).
4416 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4418 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4419 symbol and package information as Lisp native symbol and package objects
4420 instead of strings naming symbols and strings naming packages. This way,
4421 whenever packages are renamed (as in warm init), debug information is
4422 transformed along with everything else.
4423 * tweaked the optimization policy declarations which control the building
4424 of SBCL itself. Now, among other things, the system no longer saves
4425 source location debugging information. (This helps two problems at once
4426 by reducing SBCL size and by keeping SBCL from trying to look for its
4427 sources -- which may not exist -- when reporting errors.)
4428 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4429 debugging and testing purposes
4430 * cleaned up printing, making the printer call PRINT-OBJECT for
4431 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4432 methods, giving nearly-ANSI behavior
4433 * converted almost all special variables to use *FOO* naming convention
4434 * deleted PARSE-TIME functionality, since it can be done portably
4435 * moved some files out of cold init into warm init
4436 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4438 * regularized formatting of source files
4439 * added an install.sh script
4440 * fixed ridiculous memory usage of cross-compiler by making
4441 compiler/alloc.lisp not try to do pooling unless it can hook
4442 itself into the GC of the cross-compilation host. Now the system
4443 builds nicely on my old laptop.
4444 * added :SB-ALLOC in target-features.lisp-expr
4445 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4446 was not implemented)
4447 * re-did condition handling and note reporting in the compiler. Notes
4448 are no longer handled by signalling conditions. Style warnings
4449 and warnings are handled more correctly and reported in such a way
4450 that it's easy to find one or the other in your output (so that you
4451 can e.g. figure out which of many problems caused COMPILE-FILE to
4453 * changed the severity of several compiler warnings from full WARNING
4454 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4455 compiler note reporting so that it doesn't use the condition system
4456 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4457 COMPILE-FILE command)
4458 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4459 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4460 no longer supported, since their implementation was deeply intertwingled
4461 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4462 * removed bogus "support" for compiler macros named (SETF FOO), and
4463 removed the compiler macro for SETF INFO (but only after making a fool
4464 of myself on the cmucl-imp mailing list by posting a bogus patch for
4465 DEFINE-COMPILER-MACRO..)
4466 * Compiled files containing forms which have side effects on the Lisp
4467 reader (such as DEFPACKAGE forms) are now handled more correctly.
4468 (Compiler queuing of top level lambdas has been suppressed by setting
4469 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4470 * deleted various currently-unused source files, e.g. gengc.lisp. They
4471 may be added back at some point e.g. when porting to other architectures,
4472 but until they are it's distracting to distribute them and to try to
4474 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4475 there were so many of them they're just distractions, and UNCROSS is
4476 known to be able to handle the current sources
4477 * moved PROFILE functionality into TRACE, so that it will be clear
4478 how the wrapping and unwrapping of functions when you profile them
4479 interacts with the wrapping and unwrapping of functions when you
4480 trace them. (Actually, the functionality isn't there yet, but at least
4481 the interface specification is there. Hopefully, the functionality will
4482 arrive with some future maintenance release.)
4483 * removed host-oops.lisp
4484 * changed signature of QUIT function to allow UNIX-CODE argument
4485 * fixed READ-SEQUENCE bug
4486 * tweaked verbose GC output so that it looks more like the progress
4487 output that ANSI specifies for functions like LOAD
4488 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4489 * added <http://sbcl.sourceforge.com> to the banner information printed by