1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
3 * incompatible change: hash-table accessor functions are no longer
4 automatically protected by locks. Concurrent accesses on the same hash-table
5 from multiple threads can give inconsistent results or even corrupt the
6 hash-table completely. Multi-threaded applications should do their own
7 locking at the correct granularity. In the current implementation it is
8 still safe to have multiple readers access the same table, but it's not
9 guaranteed that this property will be maintained in future releases.
10 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
11 and will signal an error at runtime.
12 * enhancement: SB-THREAD package now exports a semaphore interface.
13 * enhancement: CONS can now stack-allocate on x86 and
14 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
16 * enhancement: nested lists can now be stack allocated on
17 platforms providing stack allocation support.
18 * enhancement: dynamic-extent support has been extended to support
19 cases where there are multiple possible sources for the stack
21 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
22 if the mutex is uncontested on Linux.
23 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
24 as specified by the CLHS. (thanks to Tobias Rittweiler)
25 * bug fix: NaN comparison now works on x86-64.
26 * bug fix: CLOSE :ABORT T on a stream with pending output now
28 * bug fix: instances of non-standard metaclasses using standard
29 instance structure protocol sometimes missed the slot type checks
31 * bug fix: known functions can be inlined in high-debug code.
33 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
34 * minor incompatible change: the MSI installer on Windows no longer
35 associates .lisp and .fasl files with the installed SBCL.
36 * minor incompatible change: :UNIX is no longer present in *FEATURES*
37 on Windows. (thanks to Luis Oliviera)
38 * new feature: SB-CLTL2 contrib module now implements
39 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
40 * optimization: scavenging weak pointers is now more efficient,
41 requiring O(1) instead of O(N) per weak pointer to identify
42 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
43 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
44 method bodies using constant slot-names when the first argument is
45 a specializer parameter for the method.
46 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
47 names, when the class of the instance is a direct instance
48 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
49 as slow as the constant slot-name case.)
50 * optimization: member type construction is now O(N) instead
52 * optimization: UNION and NUNION are now O(N+M) for large
53 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
55 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
56 now more readable in environments like Slime which display it.
57 (thanks to Tobias C. Rittweiler)
58 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
59 was able to infer the correct argument type for the object on which
60 the CAS operation was being performed.
61 * bug fix: copy propagation interfered with parallel assignment
62 semantics in local calls. (reported by Paul Khuong)
63 * bug fix: the signed modular fixnum shift compiled to wrong code on
64 x86 and x86-64. (spotted by a slight modification to some of
67 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
68 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
69 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
70 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
72 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
73 and generic function now print the object identity for anonymous
74 instances. (thanks to Attila Lendvai)
75 * enhancement: as an extension to MOP, SBCL now supports SETF of
76 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
77 (thanks to Attila Lendvai)
78 * enhancement: sb-cover has an alternate annotation mode which puts
79 the form annotations at the car of the form, instead of annotating
80 it completely. The benefit of this mode is that it shows better
81 which forms were instrumented by the compiler.
82 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
83 by printer control variables. (reported by Dan Corkill)
84 * bug fix: system leaked memory when delayed output was performed by
85 the OS in smaller chunks then expected. (thanks to David Smith)
86 * bug fix: system leaked memory when file streams were not closed
88 * bug fix: large objects written to slow streams that were modified
89 after the write could end up with the modified state written to
90 the underlying file descriptor.
91 * bug fix: multiple threads operating in parallel on the same stream
92 could cause buffer-overflows.
93 * bug fix: source location information is stored correctly
94 (broken since 1.0.6). This bug would generally show up as the
95 Slime debugger higlighting the wrong form when the sldb-show-source
97 * bug fix: Branch forms are again annotated as branches in the sb-cover
99 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
100 on x86-64. (reported by Gregory Vanuxem)
101 * bug fix: EQUALP could return wrong results for structures with raw
102 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
103 word). (reported by Vjacheslav Fyodorov)
104 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
107 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
108 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
109 atomic compare-and-swap operations on threaded platforms.
110 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
111 allows assining a global minimum value to optimization qualities
112 (overriding proclamations and declarations).
113 * enhancement: closed over variables can be stack-allocated on x86
115 * performance bug fix: GETHASH and (SETF GETHASH) are once again
117 * optimization: slot definition lookup is now O(1). This speeds up
118 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
119 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
120 * optimization: ASSOC and MEMBER can now be open-coded for all
121 combinations of keyword arguments when second argument is constant
122 and SPEED >= SPACE. In other cases a specialized version is
124 * bug fix: using obsoleted structure instances with TYPEP and
125 generic functions now signals a sensible error.
126 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
127 (reported by Kristoffer Kvello)
128 * bug fix: backtrace construction is now more careful when making
129 lisp-objects from pointers on the stack, to avoid creating bogus
130 objects that can be seen by the GC.
131 * bug fix: defaulting of values in contexts expecting more than 7
132 variables now works on x86-64. (reported by Christopher Laux)
133 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
135 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
136 as the property-list of a symbol.
137 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
138 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
139 situations requested, are once again file-compileable. (reported
142 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
143 * MOP improvement: support for user-defined subclasses of
144 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
145 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
146 the expansion of DEFMETHOD, is responsible for generating a form
147 which creates a list of specializers when evaluated. Additional
148 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
149 debugging and introspective support.
150 * minor incompatible change: the (unsupported) spinlock interface
151 has changed: free spinlock now has the value NIL, and a held spinlock
152 has the owning thread as its value.
153 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
154 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
156 * enhancement: name of a socket-stream is now "a socket" instead of
158 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
159 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
160 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
161 for generic functions. (Thanks to Tobias C. Rittweiler)
162 * optimization: bignum printing speed has been improved by 20-40%
163 (depending on the bignum size.)
164 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
166 * bug fix: the cache used by the CLOS to store precomputed effective
167 methods, slot offsets, and constant return values is now thread and
169 * bug fix: generic function dispatch function updating is now thread
170 and interrupt safe (in the sense that the known issues have been
172 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
173 * bug fix: interning EQL-specializers is now thread and interrupt safe.
174 * bug fix: asdf systems with dependencies to the SB-POSIX or
175 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
176 * bug fix: interrupt safety of applicable method computation has been
179 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
180 * new contrib: sb-cover, an experimental code coverage tool, is included
182 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
183 significantly faster.
184 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
185 produce more efficient code on x86-64 if the compiler can determine
186 that (+ INDEX <constant>) does not require a bounds check and FOO
187 has an element type at least 8 bits wide.
188 * enhancement: a new, experimental synchronous timeout facility is
189 provided. Refer to SB-SYS:WITH-DEADLINE for details.
190 * enhancement: when a symbol name conflict error arises, the
191 conflicting symbols are always printed with a package prefix.
192 (thanks to Kevin Reid)
193 * enhancement: stepping is now once again supported on the SPARC and
194 MIPS platforms. (It is also now more likely to work on CheneyGC
196 * enhancement: sb-sprof can now also track and report accurate call
198 * bug fixes: the treatment of non-standard subclasses of
199 SB-MOP:SPECIALIZER is more correct.
200 * incompatible change: PURIFY no longer copies the data from the
201 dynamic space into the static and read-only spaces on platforms
202 that use the generational garbage collector
203 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
205 * bug fix: GC race condition occasionally resulting in crashes with
206 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
208 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
210 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
211 a STYLE-WARNING to be signalled (regression from 1.0.4.)
212 * bug fix: an asynchronous interrupt could previously leave the
213 system running with GC inhibited.
214 * bug fix: a DECLARE form evaluated at top-level now causes an error
215 rather than silently (or verbosely) returning NIL.
216 * bug fix: trying to dissassemble functions compiled at high DEBUG could
217 result in a error being signalled due to source form lookup errors.
218 (reported by Peter Graves)
220 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
221 * incompatible change: removed writer methods for host-ent-name,
222 host-ent-addresses -- changing the values did not update the DNS
224 * minor incompatible change: changed experimental JOIN-THREAD interface
225 * documentation: the manual now lists reader and writer methods
226 in class slot documentation sections. (thanks to Richard M Kreuter)
227 * documentation: unwinding from asyncronous events has been
228 documented as unsafe.
229 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
230 in multithreaded application code.
231 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
232 platforms. (thanks to James Anderson for the optimization hint)
233 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
235 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
236 variants no longer cons.
237 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
238 their NOT- variants no longer cons.
239 * optimization: EQUAL hash tables no longer use SXHASH for objects
240 of all data types, but instead use an EQL hash for types for which
241 EQUAL is the same as EQL.
242 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
243 are significantly faster.
244 * optimization: new STRING-OUTPUT-STREAM implementation is much
245 faster for large outputs and conses 30% less on average.
246 * enhancement: XREF information is now collected for references made
247 to global variables using SYMBOL-VALUE and a constant argument.
248 * enhancement: SIGINT now causes a specific condition
249 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
250 * bug fix: FILE-POSITION used to signal an error in some cases where
251 ANSI requires it to return NIL.
252 * bug fix: ADJUST-ARRAY is now interrupt-safe.
253 * bug fix: adding and removing fd-handlers is now interrupt-safe.
254 * bug fix: inlined calls to C now ensure 16byte stack alignment on
256 * bug fix: bad type declaration in the CLOS implementation has
257 been fixed. (reported by James Anderson)
258 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
259 (thanks to Lutz Euler)
260 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
261 required by the CLHS. (reported by Samium Gromoff)
262 * bug fix: dead unbound variable references now signal an error.
263 (reported by Marco Monteiro)
264 * bug fix: / with an unused value was being deleted in safe code.
265 (thanks to Marco Monteiro and Kevin Reid)
266 * bug fix: number of characters that can be written onto a single
267 line in a file is unlimited.
268 * bug fix: some GC deadlocks caused by asynchronous interrupts have
269 been fixed by inhibiting interrupts for when GC is disbled.
270 * bug fix: some interrupt safety issues with GETHASH, (SETF
271 GETHASH), CLRHASH and REMHASH have been fixed.
272 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
273 specifier no longer causes infinite recursion.
274 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
275 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
276 * bug fix: an &environment argument with the correct variable information
277 is passed to macros that are expanded during byte compilation.
278 (reported by Samium Gromoff)
279 * bug fix: a logic error was causing the hash function for bignums to
280 have excessive amounts of collisions. (reported by Faré Rideau)
281 * bug fix: modifying the contents of an array could change the return
282 value of SXHASH on that array, which is only allowed for strings
283 and bit vectors. (bug introduced in 0.9.16)
284 * improvement: the x86-64/darwin port now passes all tests (except
285 for the debugger tests) but should still be considered
286 experimental until this is fixed.
287 * improvement: a style-warning is signaled for CASE (etc) clauses with
288 duplicate keys. (thanks to Kevin Reid)
289 * improvement: macos/x86 and macos/x86-64 now use mach exception
290 handlers for dealing with illegal instructions (for trapping and
291 error handling) and memory protection violations (for GC).
293 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
294 * new platform: experimental support for x86-64/darwin (MacOS).
295 * incompatible change: the thread-safe (on most platforms) getaddrinfo
296 and getnameinfo sockets functions are used instead of gethostbyaddr
297 and gethostbyname, on platforms where the newer functions are available.
298 As a result, the ALIASES field of HOST-ENT will always be NIL on these
300 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
301 don't print the startup banner, but behave as if --noinform was passed
302 as a command line argument. (thanks to Kevin Reid)
303 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
304 * optimization: code using alien values with undeclared types is much faster.
305 * optimization: the compiler is now able to open code SEARCH in more cases.
306 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
307 * bug fix: using standardized COMMON-LISP special variables as loop
308 variables no longer signals bogus package lock violations. (reported
310 * bug fix: declaring local loop variables to be of a range-limited type
311 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
312 (reported by Andras Simon)
313 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
314 bugs remain on x86-64.)
315 * bug fix: the #= and ## reader macros now interact reasonably with
316 funcallable instances.
317 * bug fix: type-checks for function arguments were compiled using the
318 compiler policy settings of the wrong lexical environment (in 1.0.2
320 * bug fix: SHADOW accepts characters as string designators, as required
321 by the spec (thanks to Eric Marsden)
322 * bug fix: fixed GC safety issues when foreign functions are called with
323 non-base strings as arguments
324 * bug fix: more consistent error output for fatal-compiler-warnings, like
326 * bug fix: functions with proper names were showing up as NIL in
327 backtraces (reported by Edi Weitz, regression in 1.0.2)
329 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
330 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
331 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
332 produce more efficient code on the x86 if the compiler can determine
333 that (+ INDEX <constant>) does not require a bounds check and FOO
334 has an element type at least 8 bits wide.
335 * bug fix: references to undefined variables are handled the same way
336 in toplevel forms as in the normal compiler
337 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
339 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
340 (thanks to Jon Buller)
341 * improvement: faster compilation times for complex functions
342 * improvement: added readlink support to SB-POSIX (thanks to Richard
345 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
346 * improvement: experimental support for mach exception handling on
347 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
349 * improvement: support for GBK external format.
350 (thanks to Chun Tian (binghe))
351 * improvement: the debugger now displays variables that have been closed
352 over, in code compiled with (DEBUG 2) or higher
353 * improvement: support for executable cores on NetBSD (thanks to
355 * new feature: added a RESTART-FRAME debugger command
356 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
357 be used to provide an implementation for FILE-POSITION on Gray streams
358 (thanks to Eric Marsden)
359 * new feature: add syslog, openlog and closelog support to SB-POSIX
360 (thanks to Richard Kreuter)
361 * optimization: the function call overhead in code compiled with
362 a high DEBUG optimization setting is significantly
363 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
364 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
365 (thanks to Tony Martinez)
366 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
367 evaluated once (reported by Kevin Reid)
368 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
369 works again (thanks to Kilian Sprotte)
370 * bug fix: an error is signaled for tagbodies with duplicate tags
371 (thanks to Stephen Wilson)
372 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
373 * bug fix: Win32 port can now handle foreign code unwinding Lisp
374 stack frames from alien callbacks.
375 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
376 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
377 65k pages (thanks to David Woodhouse)
378 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
380 changes in sbcl-1.0.1 relative to sbcl-1.0:
381 * new platform: FreeBSD/x86-64, including support for threading.
382 * new feature: the compiler stores cross-referencing information
383 abount function calls (who-calls), macroexpansion (who-macroexpands)
384 and special variables (who-binds, who-sets, who-references) for code
385 compiled with (< SPACE 3). This information is available through the
386 sb-introspect contrib.
387 * new feature: users may subclass SEQUENCE, and have instances of
388 these classes interoperate with standard Common Lisp functions if
389 a number of methods are defined. (This feature is experimental
390 and the interface subject to change based on feedback from SBCL
391 users and the general community)
392 * improvement: sb-sprof traces call stacks to an arbitrary depth on
393 x86/x86-64, rather than the previous fixed depth of 8
394 * improvement: another pthread back-end of mutex "pthread-futex".
395 * bug fix: non-ascii command-line arguments are processed correctly
396 (thanks to Yaroslav Kavenchuk)
397 * bug fix: non-required arguments were not passed correctly when a method
398 defined using DEFMETHOD was called from a mop-generated method using
399 CALL-NEXT-METHOD (reported by Pascal Costanza)
400 * bug fix: recursion is now permitted in accessors through
401 SLOT-UNBOUND. (reported by Pascal Costanza)
402 * bug fix: an error was signaled at startup if the HOME environment
403 variable was defined, but had an empty value (reported by Peter Van Eynde)
404 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
405 signal a PROGRAM-ERROR, not a BUG.
406 * bug fix: SB-POSIX:READDIR works when built with large file support.
407 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
409 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
410 for better automatic indentation support. (thanks to Matt Pillsbury)
411 * optimization: loading generic functions no longer takes O(n^2) time,
412 proportional to the amount of methods in the generic function
413 (reported by Todd Sabin and Jeremy Brown)
414 * optimization: the FIND and POSITION family of sequence functions
415 are significantly faster on arrays whose element types have been
417 * improvements to the Windows port:
418 ** Intermittent heap corruption problems have been fixed. (thanks
419 to Alastair Bridgewater)
420 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
422 ** Lisp is able to unwind foreign exception frames from alien
423 callbacks. (thanks to Alastair Bridgewater)
425 changes in sbcl-1.0 relative to sbcl-0.9.18:
426 * improvement: experimental support for threading on FreeBSD/x86.
427 (thanks to NIIMI Satoshi)
428 * improvement: runtime option --dynamic-space-size can be used
429 to set the size of the dynamic space reserved on startup.
430 * improvement: floating point modes in effect are now saved in
431 core, and restored on startup.
432 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
433 startup, not time since first call to GET-INTERNAL-REAL-TIME.
434 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
435 threads are not running after *SAVE-HOOKS* have run.
436 * improvement: writes to CLOS instance slots are type-checked in code
437 compiled with (SAFETY 3)
438 * improvement: floating-point exception handling on FreeBSD (thanks to
440 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
441 (thanks to Zach Beane)
442 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
444 * improvement: added support for the Shift-JIS external format.
445 (contributed by NIIMI Satoshi)
446 * improvement: callbacks are supported on Linux/PPC. (thanks to
448 * bug fix: compiler bug triggered by a (non-standard) VALUES
449 declaration in a LET* was fixed. (reported by Kaersten Poeck)
450 * bug fix: file compiler no longer confuses validated and already
451 dumped structurres. (reported by Kaersten Poeck)
452 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
453 fill-pointer signals a type-error as required. (thanks to
455 * bug fix: disassemly of funcallable instances works.
456 * bug fix: single stepping on PPC.
457 * bug fix: fix thread-safety problems in the type system (generally
458 manifesting as nonsensical errors like "STRING is a bad type specifier
459 for sequences" or "The value 1 is not of type FIXNUM")
460 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
461 (reported by Josip Gracin)
462 * bug fix: an error is signaled for attempts to displace arrays with
463 incompatible element types (thanks to Mario Mommer)
464 * bug fix: more correct handling of wide characters in debug info
465 (bug reported by Attila Lendvai and fixed by Juho Snellman)
466 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
467 and don't cause extra consing
468 * optimization: MAP and MAP-INTO are significantly faster on vectors
469 whose elements types have been declared.
470 * Improvements to SB-SPROF:
471 ** Support for allocation profiling
472 ** Reduced profiling overhead, especially for long profiling runs
473 * Improvements to the Windows port:
474 ** floating point exceptions are now reported correctly.
475 ** stack exhaustion detection works partially.
476 ** more accurate GET-INTERNAL-REAL-TIME.
477 ** better RUN-PROGRAM behaviour in case of errors in the child
479 ** PROBE-FILE now simplifies pathnames correctly.
480 ** DIRECTORY now works correctly with :WILD-INFERIORS.
481 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
482 1st 1970 (although time timezone data will be unreliable).
483 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
485 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
486 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
487 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
489 * bug fix: two potential GC deadlocks affecting threaded builds.
490 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
491 returns T (reported by Anton Kazennikov)
492 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
493 with non-variable places
494 * bug fix: remove a race condition in the setting of
495 funcallable-instance functions, this should make threaded CLOS
496 code more stable against memory faults.
497 * bug fix: corruption of specials when unbinding is interrupted by an
498 asynchronous unwind (reported by Hannu Koivisto)
499 * improvement: the debugger will now also display local variables that
500 are only used once, for code compiled with a DEBUG optimization quality
503 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
504 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
505 * incompatible change: External-format support for FFI calls. The
506 SB-ALIEN:C-STRING no longer implies an ASCII
507 external-format. Instead the string is subject to external-format
508 conversion. Additionally return values of type SB-ALIEN:C-STRING
509 are by default of type (SIMPLE-ARRAY CHARACTER), not
510 SIMPLE-BASE-STRING. For an alien type that behaves like the old
511 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
512 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
513 * incompatible change: SB-EXT package no longer contains the
514 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
515 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
517 * incompatible change: the single-stepper is no longer available
518 on Alpha, Mips and Sparc platforms.
519 * minor incompatible change: the direct superclasses of
520 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
521 not (STANDARD-OBJECT FUNCTION). This makes the
522 class-precedence-lists of GENERIC-FUNCTION and
523 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
525 * minor incompatible change: the default stream external format on
526 non-unicode SBCL is no longer detected from the locale, but is always
528 * new feature: Add a version of evaluator that uses an interpreter instead
529 of the compiler. EVAL still uses the compiler by default, to switch it
530 to use the interpreter, set the value of the variable
531 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
532 * minor incompatible change: the single-stepper REPL has been merged
533 with the normal debugger (see the "Stepping" heading of the debugger help
534 for more details). The debugger command STEP will no longer switch
535 to the single-stepper REPL.
536 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
537 for a type now works.
538 * bug fix: loading of default sysinit file works. (thanks to Leonid
540 * bug fix: better detection of circularities in the file-compiler.
541 (reported by Marco Monteiro)
542 * bug fix: the CL pathname functions now work with files that have
543 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
544 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
545 systems with Unix98 pty semantics.
546 * bug fix: ASDF-INSTALL will now work with bsd tar.
547 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
549 * bug fix: timers expiring in dead threads no longer cause a
550 type-error (reported by Paul "Nonny Mouse").
551 * bug fix: thanks to more lightweight single-stepper instrumentation,
552 code compiled with (DEBUG 3) will compile and execute significantly faster,
553 and will have more accurate type-inferencing than before
554 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
555 whose bindings are modified
556 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
557 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
558 ** replace dummy implementations of CL:MACHINE-INSTANCE and
559 CL:SOFTWARE-VERSION with proper version
561 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
562 * feature: implemented the READER-METHOD-CLASS and
563 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
564 as specified by AMOP.
565 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
567 * optimization: faster LOGCOUNT implementation on x86 and x86-64
568 (thanks to Lutz Euler)
569 * optimization: hashing of general arrays and vectors has been
570 improved. (reported by Any Fingerhut)
571 * enhancement: SB-INTROSPECT is now able to find definitions of
572 profiled functions. (thanks to Troels Henriksen)
573 * enhancement: compiler-macro expansion applies now to FUNCALL forms
574 as well, allowing compiler-macros for SETF-functions to expand.
575 * enhancement: step-instrumentation no longer wraps known
576 single-value functions with multiple-value context, allowing
577 better type inference.
578 * fixed bug #337: use of MAKE-METHOD in method combination now works
579 even in the presence of user-defined method classes. (reported by
580 Bruno Haible and Pascal Costanza)
581 * fixed bug #339(c): if there are applicable methods not part of any
582 long-form method-combination group, call INVALID-METHOD-ERROR.
583 (reported by Bruno Haible)
584 * fixed bug #361: the :FUNCTION initarg in the protocol for
585 initialization of methods can now be used to override
586 internally-produced optimized functions. (reported by Bruno
588 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
589 system-provided lambda expression no longer cause warnings about
590 unbound #:|pv-table| symbols.
591 * bug fix: improved the handling of type declarations and the
592 detection of violations for keyword arguments with non-constant
594 * bug fix: potentially erronous calls to PATHNAME and
595 MERGE-PATHNAMES were being flushed in some cases.
596 (reported by Richard Kreuter)
597 * bug fix: compiled calls to TYPEP were mishandling obsolete
598 instances. (reported by James Bielman and Attila Lendvai)
599 * bug fix: format strings with ~> without matching ~< no longer
600 trigger an AVER, but signal an understandable error instead.
601 (reported by Antonio Martinez)
602 * bug fix: specifying an output-file without a pathname-type for
603 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
604 of input-file instead of "fasl". (reported by Robert Dodier)
605 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
606 (reported by James Y Knight).
607 * bug fix: compiler-macros-function did not consider the environment
608 argument for shadowing by local functions.
609 * bug fix: compiler-macros expansion was inhibited by local INLINE
611 * bug fix: inline expansions of known functions were subject to
612 step-instrumentation in high debug policies, leading to problems
614 * bug fix: compiler failed to differentiate between different CONS
616 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
617 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
618 * bug fix: #368: incorrect use of expressed vs. upgraded array
620 * bug fix: #306a: more precise unions of array types.
621 * thread-safety improvements:
622 ** CONDITION-WAIT could return early on Linux, if the thread was
623 interrupted and subsequently continued with SIGCONT.
624 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
626 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
627 * added support for the ucs-2 external format. (contributed by Ivan
629 * minor incompatible change: pretty printing of objects of type
630 (cons symbol) is, in the default pprint-dispatch-table, now
631 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
633 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
634 called later in a class's lifetime, possibly as late as when the
635 first instance of the class is created. Previously,
636 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
637 class became finalizeable.
638 * fixed bug: FILE-POSITION sometimes returned inconsistent results
639 for multibyte external-format streams. (thanks to "vbzoli")
640 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
641 with :ALLOCATION :CLASS inherited from superclasses of the
643 * fixed bug: anonymous classes can now be created using the :NAME
644 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
645 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
646 * fixed bug: core-files saved with :EXECUTABLE T can again be
647 executed when SBCL_HOME isn't set. (reported by James Knight)
648 * fixed bug: toplevel LOCALLY forms with declarations could
649 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
650 * fixed bug: printing from several different threads using different
651 values of *print-case* could cause invalid output, due to
652 some internal special variables of the printer not being bound
653 thread-locally (reported by Max Mikhanosha)
654 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
655 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
656 (reported by Pascal Costanza)
657 * fixed bug: FINALIZE-INHERITANCE is called from
658 REINITIALIZE-INSTANCE on classes when the class has previously
659 been finalized, as required by AMOP.
660 * minor code generation optimizations:
661 ** better register allocation in CLOS dispatching functions
662 ** overflow detection when coercing signed bytes to fixnums on x86-64
663 ** is now implemented with one IMUL instruction instead of three shifts
664 ** more efficient bit-vector access on x86 and x86-64
665 ** more efficient access to raw structure slots on x86 and x86-64
666 * fixed some bugs revealed by Paul Dietz' test suite:
667 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
670 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
671 * feature: thread support on Solaris/x86, and experimental thread support
673 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
675 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
676 default method for SLOT-UNBOUND.
677 * minor incompatible change: prevent the user from specializing the
678 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
679 somewhat counter to the intent of the protocol, I (CSR) think, and
680 additionally it just doesn't work in SBCL as currently
681 implemented, thanks to optimizations (that are always valid for
682 the other three SLOT-VALUEish functions, but not for the setter).
683 * minor incompatible change: the :SB-LDB feature is now enabled by
684 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
685 the low-level debugger.
686 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
687 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
688 down to an SB-SYS:FD-STREAM, allowing direct communication in
689 more cases. Temporary files and pipes are still used as a fallback
691 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
692 on the non-reentrant C functions localtime(3) and gmtime(3).
693 * bug fix: global optimization policy was not visible in LOCALLY and
695 * bug fix: class objects can be used as specializers in methods.
696 (reported by Pascal Costanza)
697 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
698 with a type error. (reported by blitz_ on #lisp)
699 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
700 failed with a type error. (reported by Pascal Bourguignon)
701 * bug fix: merging pathnames against defaults with :DIRECTORY
702 starting with '(:RELATIVE :BACK) should preserve the :BACK.
703 (reported by James Y Knight)
704 * bug fix: saving large (>2GB) cores on x86-64 now works
705 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
706 constant index and a (simple-array (signed-byte 32)) array
707 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
708 error (patch by Robert J. Macomber)
709 * feature: TIME now displays the amount of run-time spent in GC
710 * bug fix: The debugger now does a better job of respecting
711 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
712 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
713 workaround for bug 403.)
714 * bug fix: floating point exception handling now works on FreeBSD
715 (thanks to NIIMI Satoshi)
716 * fixed some bugs revealed by Paul Dietz' test suite:
717 ** MISC.641: LET-conversion were not supposed to work in late
719 * improvements to the Win32/x86 port:
720 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
721 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
723 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
724 * new feature: source path information is generated for macro-expansion
725 errors for use in IDE's like Slime (thanks to Helmut Eller)
726 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
727 * bug fix: compiler does not loop forever on an invalid type in
729 * improvement: compilation of most CLOS applications is significantly
731 * optimization: added a limited bytecode compiler for simple toplevel
732 forms, speeding up compilation and FASL loading
733 * bug fix: the statistical profiler now properly distinguishes anonymous
736 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
737 * minor incompatible change: in sbcl-0.9.11 (but not earlier
738 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
739 into subclasses of the finalized class. Now user calls to
740 FINALIZE-INHERITANCE finalize just the one class, and calls by the
741 system return before any subclasses are finalized.
742 * minor incompatible change: The reader no longer ignores errors
743 regarding non-existent packages in #+ and #- feature tests.
744 * new feature: command line options --no-sysinit, --no-userinit to
745 inhibit loading the corresponding init files
746 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
747 for sending data through UDP sockets (thanks to François-René Rideau)
748 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
749 error is signalled instead (thanks to François-René Rideau)
750 * minor incompatible change: Error signalling behaviour of lexical
751 operations violating package locks has changed slightly. Refer to
752 documentation on package locks for details.
753 * enhancement: EVAL can process IF-expressions without resorting to the
755 * bug fix: Some operations involving SIN, COS, or TAN weren't being
756 constant-folded properly due to missing out-of-line functions.
757 (reported by Mika Pihlajamäki)
758 * bug fix: LISTEN sometimes returned T even in cases where no data was
759 immediately available from the stream
760 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
761 were reversed. (reported by Levente Mészáros)
762 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
763 when given a vector displaced to an adjustable array. (reported
765 * bug fix: derivation of float boundaries from numbers outside the
766 appropriate float range (reported by John Wiseman)
767 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
769 * bug fix: precomputing cache entries for generic functions with
770 some subclasses of specializers as yet invalid does not attempt to
771 fill a cache line with a negative offset. (reported by Levente
773 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
774 allow condition class objects as arguments to DOCUMENTATION and
775 (SETF DOCUMENTATION); only find and set documentation for
776 structure names for the STRUCTURE doc-type. (suggested by Gary
778 * improvements to the Win32/x86 port:
779 ** (user-homedir-pathname) and default initialization file
780 locations now know about the user's "Documents and Settings"
781 directory (thanks to Yaroslav Kavenchuk)
782 ** run-program is implemented (thanks to Mike Thomas)
783 ** sockets support (thanks to Timothy Ritchey)
784 ** better backtrace support (thanks to Alastair Bridgewater)
785 ** sb-grovel supported
786 ** asdf-install and sb-posix work somewhat
787 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
788 * improvements to the Solaris/x86 port:
789 ** works on Solaris 11/Solaris Express
790 ** floating-point exception handling support
791 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
792 * fixed some bugs revealed by Paul Dietz' test suite:
793 ** REMOVE-METHOD returns its generic function argument even when
794 the method is not one of the generic functions' methods.
795 ** objects declared as MEMBER types can be admissible arguments to
797 ** printing characters should simply be printed by the FORMAT ~:C
799 ** compiler failure when compiling functions with hairy constant
800 defaults for optional parameters.
801 ** compiler produces wrong code when MAYBE-INLINE-expanding a
802 function, which is already optimized.
804 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
805 * new platform: experimental support for SBCL x86/Darwin, including
806 MacOS X 10.4.5 on Intel.
807 * new feature: Unicode character names are now known to the system
808 (through CHAR-NAME and NAME-CHAR).
809 * new feature: the filesystem location of SBCL's core file is
810 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
811 * minor incompatible change: the contrib modules SB-POSIX and
812 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
813 this change is to make it easier to distribute
814 location-independent binaries.
815 * bug fix: as implied by AMOP, standardized classes no longer have
816 slots named by external symbols of public packages. (reported by
818 * optimization: calling functions via constant symbols -- as in
819 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
820 via the function object as in (FUNCALL #'FOO).
821 * optimization: on x86 and x86-64, the calling convention for the
822 case of dealing with an unknown number of values has been altered
823 to be friendlier to the prediction heuristics implemented,
824 particularly with reference to CALL and RET pairing. (thanks to
825 Alastair Bridgewater)
826 * optimization: on x86, the code for access to thread-local symbol
827 values and binding/unbinding of thread-local symbols is smaller.
828 (thanks to Alastair Bridgewater)
829 * enhancement: CONSTANTP is now able to determine constantness of
830 more complex forms, including calls to constant-foldable standardized
831 functions and some special forms beyond QUOTE.
832 * fixed bug: occasional GC crashes on Solaris/x86
833 * optimization: x86-64 supports stack allocation of results of simple
834 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
835 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
836 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
837 (thanks to James Knight)
838 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
839 by the standard (thanks to Stephen Compall)
841 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
842 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
843 be used for bundling the runtime and the core file into one
844 executable binary. This feature is not currently supported on all SBCL
845 platforms. (thanks to James Bielman and NIIMI Satoshi)
846 * new feature: a generational or ephemeral garbage collector is now
847 the default on the PowerPC platform (both Linux and Darwin). The
848 old Cheney (stop and copy) collector is a build-time option.
849 (thanks to Cyrus Harmon, after Raymond Toy)
850 * minor incompatible change: the method by which SBCL finds its
851 contributed modules has changed; it no longer relies on symbolic
852 links from an $SBCL_HOME/systems directory, but searches directly
853 in the subdirectories of $SBCL_HOME.
854 * enhancement: the dynamic heap size on the Linux/PPC platform is
855 markedly larger, even using the older Cheney garbage collector.
856 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
857 certain complicated string types. (reported by Gary King)
858 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
859 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
860 * fixed bug: DOCUMENTATION on structures no longer signals an
861 error if no structure type of the right name exists. (reported by
863 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
864 applicable non-standard primary or :AROUND method on
865 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
866 no longer cause unbound variable errors. (reported by Kevin Reid)
867 * fixed bug: metacircle resolution in cases where methods have slots
868 added before the slots from STANDARD-METHOD. (reported by Jean
870 * fixed bug: the Power PC assembly code for calling into lisp
871 sometimes computed its return address wrongly (depending on the
872 15th bit of the address, fixed at link time). This used to
873 manifest itself in a segmentation violation while building PCL.
874 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
875 many others over the years)
876 * fixed bug: ROOM no longer reports silly numbers for stack usage if
877 the stack pointer (treated as a signed integer) is negative.
878 (thanks to Peter van Eynde)
880 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
881 * new platform: experimental support for the Windows operating
882 system has been added. (thanks to Alastair Bridgewater)
883 * fixed several bugs in and robustified the PPC FFI (including
884 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
885 * bug fix: allow non-simple string symbol names (reported by Paul
887 * bug fix: interrupt handling on NetBSD (thanks to Richard M
889 * bug fix: saving a core corrupted callbacks on x86/x86-64
890 * bug fix: closed a loophole in metacircularity detection and
891 grounding in the PCL implementation of CLOS.
892 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
893 (reported by tomppa on #lisp)
894 * bug fix: clear the direction flag on Lisp -> C transitions, as
895 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
896 (reported by Andrej Grozin and Hendrik Maryns)
897 * optimization: major improvements to GC efficiency on GENCGC platforms
898 * optimization: faster implementation of EQUAL
899 * optimization: emit more efficient opcodes for some common
900 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
901 * optimization: several other minor code-generation improvements on x86-64
902 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
904 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
905 * minor incompatible change: (SETF CLASS-NAME) and (SETF
906 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
907 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
908 by ANSI as a generic function, and for consistency (SETF
909 GENERIC-FUNCTION-NAME) is treated likewise.
910 * fixed bug #233.b: make constraint propagation notice when a variable
911 value is changed after it is referenced but before it is used
912 * fixed bug #296: no more arbitrary behaviour from filenames with
913 odd characters as --load arguments. (reported by Adam Warner)
914 * fixed bug #390: :CHARACTER-SET pathname components now work as
915 expected. (reported by Tim Daly Jr)
916 * fixed bug #391: complicated :TYPE intersections in slot
917 definitions no longer cause an error in PCL internals.
918 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
919 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
920 returning the number of octets which would be written to the
921 file-stream. (thanks to Robert J. Macomber)
922 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
923 arguments to the internal stream functions. (thanks to David
925 * bug fix: stack exhaustion is now handled on the x86/SunOS
926 platform. (thanks to Daisuke Homma)
927 * bug fix: more accurate ROOM results on GENCGC platforms
928 * optimization: improved type inference for arithmetic-for
929 index variables in LOOP
930 * optimization: faster floating-point SQRT on x86-64
931 * fixed some bugs revealed by Paul Dietz' test suite:
932 ** DOCUMENTATION returns NIL instead of "" for method combinations
933 that don't have a docstring
935 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
936 * minor incompatible change: (SETF CLASS-NAME) and (SETF
937 GENERIC-FUNCTION-NAME) are no longer generic functions, and
938 therefore are not customizeable by user code (as seems to be at
939 least permitted and maybe required by AMOP). As a consolation,
940 however, the SBCL implementation of these functions now calls
941 REINITIALIZE-INSTANCE as specified by AMOP.
942 * bug fix: slot-definition documentation is propagated as per ANSI
943 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
944 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
945 argument, as do eslotd initialization methods. (from Pascal
946 Costanza's "Closer" project)
947 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
948 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
950 * bug fix: it is now possible to have more than one subclass of
951 STANDARD-GENERIC-FUNCTION without causing stack overflow.
952 (reported by Bruno Haible, Pascal Costanza and others)
953 * bug fix: the dependent update protocol now works for generic
954 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
956 * bug fix: condition-class instances corresponding to
957 DEFINE-CONDITION forms are now created eagerly. (reported by
958 Kalle Olavi Niemitalo on comp.lang.lisp)
959 * bug fix: floating point printing is more accurate in some
960 circumstances. (thanks to Simon Alexander)
961 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
962 merged with *DEFAULT-PATHNAME-DEFAULTS*.
963 * bug fix: callbacks on OS X now preserve stack-alignment.
964 (thanks to Cyrus Harmon)
965 * enhancement: the x86-64 disassembler is much better at
966 disassembling SSE instructions. (thanks to Lutz Euler)
967 * enhancement: CHECK-TYPE on a variable now allows type-inference
968 (thanks to Vincent Arkesteijn)
969 * optimization: improved performance of EUC-JP external format.
970 (thanks to NIIMI Satoshi)
971 * optimization: performance improvements to IO on file streams of
972 :ELEMENT-TYPE CHARACTER
973 * optimization: much faster memory allocation on x86-64
974 * optimization: faster garbage collections (latency and throughput)
976 * optimization: faster bignum subtraction and division on x86 and x86-64
977 (thanks to Lutz Euler)
978 * optimization: more accurate type-inference for loops that use a
979 floating point index variable or a negative step.
981 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
982 * bug fix: add a workaround to SBCL looping infinitely at startup on
983 Linux kernels with apparently buggy implementations of personality().
984 (thanks to Svein Ove Aas)
985 * bug fix: Unicode symbols are correctly printed in LDB backtraces
986 (thanks to David Lichteblau)
987 * bug fix: local bindings shadow global symbol macros for
988 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
989 * optimization: non-open coded uses of numeric comparison operators
990 (e.g. >) no longer cons when called with more than one parameter
991 on platforms supporting dynamic-extent allocation.
992 * enhancement: saving cores with foreign code loaded is now supported
993 on MIPS/Linux in addition to the previously supported platforms.
994 * bug fix: FIND-RESTART now tests for activity, not applicability when given
995 a restart object as identifier. (reported by Helmut Eller for CMUCL)
996 * bug fix: division by zero in sb-sprof when no samples were collected
997 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
998 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
999 (thanks to Alexander Kjeldaas)
1000 * new feature: ignoring the return values of destructive functions
1001 like NREVERSE signals a compile-time style-warning.
1002 (thanks to Kevin Reid)
1003 * new feature: the alignment of alien structure fields can be
1004 explicitly specified. (thanks to Cyrus Harmon)
1005 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1006 and dump core on SIGQUIT
1008 ** incompatible change: threads do not inherit values of specials
1009 from their parents (see manual)
1010 ** bug fix: threads stacks belonging to dead threads are freed by the
1011 next exiting thread, no need to gc to collect thread stacks anymore
1012 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1013 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1014 ** bug fix: dynamic variable and thread start related gc lossage
1015 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1017 * fixed some bugs revealed by Paul Dietz' test suite:
1018 ** SUBTYPEP is slightly more accurate on heinously complicated
1019 CONS types where some of the members have uncertain (in the
1020 NIL, NIL sense) type relationships to each other.
1022 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1023 no longer purified unless :PURIFY T is explicitly specified.
1024 ** Non-purified cores are significantly smaller than before
1026 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1027 * new feature: timers based on Zach Beane's excellent timer package
1028 * added support for the following external formats: koi8-u,
1029 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1030 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1031 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1032 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1033 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1034 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1035 * incompatible change: a threaded SBCL will no longer revert to
1036 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1037 * bug fix: interrupts are disabled until startup is complete; no
1038 more sigsegvs when receiving a signal to soon
1039 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1041 * bug fix: add a workaround for the memory randomization features in
1042 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1043 workaround will only be in effect on systems with the proc filesystem
1045 * bug fix: printing objects of type HASH-TABLE signals a
1046 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1048 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1049 have been running for over 50 days. (reported by Gilbert Baumann)
1050 * bug fix: the logic for getting names of functions gets less
1051 confused when confronded with alternate-metaclass
1052 funcallable-instances. (reported by Cyrus Harmon)
1053 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1054 consistent, even on internal alternate-metaclass objects.
1055 * bug fix: flush closure information collected by physical
1056 environment analysis prepass before the main pass. (bug reported
1058 * bug fix: compiler pack phase does not modify a hashtable, which is
1059 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1060 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1061 may be expanded. (reported by Alexander <malishev> on c.l.l)
1062 * bug fix: no more style-warnings when compiling code using LAST
1063 under high-SPEED low-SPACE settings. (reported by David Wallin
1065 * fixed some incompatibilities between SBCL's MOP and the MOP
1067 ** the METAOBJECT class is now implemented;
1068 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1069 STANDARD-OBJECT, as required;
1070 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1071 now compatible (as required by VALIDATE-SUPERCLASS); there
1072 remains a consistency requirement over the presence or absence
1073 of the FUNCTION class in the superclass list of finalized
1074 classes; see the manual for more details;
1075 ** the :AROUND method for COMPUTE-SLOTS on
1076 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1077 requested slot ordering.
1079 ** bug fix: parent thread now can be gc'ed even with a live
1081 ** bug fix: binding a special with PROGV to no value is not
1082 the same as that symbol not having been bound (thanks to
1084 ** bug fix: binding specials is thread safe (thanks to
1086 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1087 and SB-SPROF do not die with 'no handler for signal XX in
1088 interrupt_handle_now(..)' anymore
1089 ** bug fix: WITH-TIMEOUT works with multiple running threads
1090 * fixed some bugs revealed by Paul Dietz' test suite:
1091 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1092 the :method-class keyword argument.
1094 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1095 * new port: the Solaris operating system on x86 processors is now
1096 mostly supported, though some rough edges in the environment
1097 remain. (thanks to Daisuke Homma)
1098 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1099 space for its heap. (thanks to Thiemo Seufer)
1100 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1101 closures. (thanks to Thiemo Seufer)
1102 * minor incompatible change: eof selects abort in the debugger.
1103 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1104 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1106 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1107 deprecated, and will go away in a future revision of SBCL.
1108 * minor incompatible change: GC-ON and GC-OFF are no longer
1109 implemented with a counter, it does not matter how many times gc
1110 is switched on or off
1111 * bug fix: discriminating functions for generic function classes
1112 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1113 make invalid assumptions about method precedence order. (reported
1115 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1116 platforms. (thanks to Thiemo Seufer)
1117 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1118 * bug fix: correct pathname printing with printer escaping is on.
1119 (thanks to Kevin Reid)
1120 * bug fix: complex VOP definitions in "user-space" no longer trigger
1121 package locks. (reported by Zach Beane)
1122 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1123 for funcallable-instance functions, and is no different from
1125 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1126 characters in the current readtable. (reported by Nicholas Neuss)
1127 * bug fix: SUBTYPEP on various CONS types returns more a more
1128 accurate acknowledgment of its certainty.
1129 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1130 lists in some cases. This partially fixes bug 384.
1131 * flush all standard streams before prompting in the REPL and the
1133 * bug fix: signal handling and triggering gc do not conflict
1134 directly anymore, in particular a high frequency sb-sprof does
1135 not prevent gc from running
1136 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1137 approximation for timezone and DST information between the
1138 universal time epoch and the smallest negative 32-bit time_t.
1139 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1140 year 1899 so long as the encoded time is non-negative.
1141 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1142 the correct answer for non-constant rotate amounts when performing
1143 an inline 32-bit rotation.
1145 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1146 there is only one thread in the session
1147 ** bug fix: memory leak for streams created in one thread and
1148 written to in another
1149 ** bug fix: lockup when compiled with gcc4
1150 ** bug fix: race that allows the gc to be triggered when gc is
1152 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1153 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1155 ** bug fix: finished threads are gc'ed properly
1156 * fixed some bugs revealed by Paul Dietz' test suite:
1157 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1158 has arguments with a different set of applicable methods from
1159 the orignal arguments.
1160 ** The type error thrown by MAP now has a correct expected-type
1162 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1163 name a compiled function.
1164 ** Three MISC tests where a large bignum was improperly coerced to
1165 a float that couldn't represent that bignum during type
1166 derivation were fixed.
1167 ** SUBTYPEP can now handle types involving the negation of a
1168 list-form FUNCTION type.
1169 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1170 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1171 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1173 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1174 * New feature: Experimental support for bivalent streams: streams
1175 opened with :element-type :default now allow character and binary
1176 (unsigned-byte 8) I/O
1177 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1178 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1180 * bug fix: no more highly sporadic "couldn't check whether ~S is
1181 readable" when reading a stream and an interrupt hits in the middle
1182 of a select system call
1183 * compiler better recognizes complex arrays (reported by Eduardo
1185 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1186 for variables on SBCL built with linkage-tables. (reported by Luis
1188 * various error reporting improvements.
1189 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1190 (Thanks to Thiemo Seufer)
1191 * bug fix: nested reader invokations work correctly
1192 * bug fix: it is possible to have simultaneous references to foreign
1193 code and foreign data with the same name.
1195 ** added x86-64 support
1196 ** incompatible change: the threading api now works with thread
1197 objects instead of thread ids
1198 ** bug fix: threads are protected from signals and interruption when
1199 starting up or going down
1200 ** bug fix: a race where an exiting thread could lose its stack to gc
1201 ** bug fix: don't halt on infinite error in threads if possible
1202 ** fixed numerous gc deadlocks introduced in the pthread merge
1203 ** bug fix: fixed thread safety issues in read and print
1204 ** bug fix: debugger doesn't hang on session lock if interrupted at
1205 an inappropriate moment
1206 ** bug fix: run-program is now thread safe(r)
1207 ** bug fix: inner with-recursive-lock no longer releases the mutex
1208 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1209 * fixed some bugs revealed by Paul Dietz' test suite:
1210 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1211 EXPECTED-TYPE slots filled.
1212 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1214 ** MAKE-CONDITION accepts classes as type-designators.
1215 ** COMPILE may never return NIL.
1216 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1217 range before calling Unix time functions
1219 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1220 * numerous signal handling fixes to increase stability
1221 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1222 * minor incompatible change: we now correctly canonize default
1223 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1224 as per the MOP, rather than the historical (INITARG INITFUNCTION
1225 INITFORM). (reported by Bruno Haible)
1226 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1227 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1228 for more information.
1229 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1230 pathname is a directory pathname.
1231 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1232 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1234 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1235 :METACLASS argument in addition to a class name. (reported by
1236 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1237 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1238 (reported by Bruno Haible; patch from Gerd Moellmann)
1239 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1241 * bug fix: more cleanups to the floating point exception handling on
1242 x86-64 (thanks to James Knight)
1243 * bug fix: the compiler does not try to constant fold calls of
1244 COERCE and BIT-* functions when they return freshly constructed
1245 objects. (reported by Nikodemus Siivola and Paul Dietz)
1246 * optimization: improved the MIPS versions of generic (in the
1247 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1248 * optimization: direct conversion of (unsigned-byte 32) to floats on
1249 the PowerPC platform.
1250 * optimization: structure instances with raw slots now use less
1251 memory, and probably show better memory locality. (thanks to
1253 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1254 are treated as requests for stack allocation on the x86-64,
1255 Alpha-32, PPC and SPARC platforms.
1256 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1257 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1258 (thanks to Tony Martinez)
1260 ** gcing a dead thread can no longer lead to lockups
1261 ** threads block signals until they are set up properly
1262 ** errno is no longer shared by threads
1263 ** interrupt-thread restores the eflags register on x86
1264 ** fixed some lockups due to gc/thread interaction
1265 * fixed some bugs revealed by Paul Dietz' test suite:
1266 ** invalid dotted lists no longer raise a read error when
1267 *READ-SUPPRESS* is T
1268 ** signal an error if a symbol that names a declaration is used
1269 as the name of a type, or vice versa
1270 ** allow using the (declare (typespec var*)) abbreviation for
1271 (declare (type typespec var*)) with all type specifiers
1272 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1273 ** always return NIL from PPRINT-POP when OBJECT is NIL
1274 ** don't signal errors when pretty-printing malformed LABELS,
1275 FLET or MACROLET forms
1276 ** declarations in a DOLIST body are also in scope for the
1278 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1280 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1283 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1284 * fixed cross-compiler leakages that prevented building a 32-bit
1285 target with a 64-bit host compiler.
1286 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1287 opened with :IF-EXISTS :OVERWRITE.
1288 * fixed bug 281: error for an invalid qualifier in a short-form method
1289 combination method is not signalled until the faulty method is called.
1290 * bug fix: iteration variable type inferrer failed to deal with open
1291 intervals. (reported by Alan Shields)
1292 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1293 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1294 or more runtime options were provided to the sbcl binary.
1295 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1296 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1297 * optimization: there's now a fast-path for fixnum arguments in the
1298 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1299 * optimization: the code generated on x86-64 is more compact thanks
1300 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1301 * bug fix: floating-point exception handling now partly works on
1302 x86-64. (Thanks to James Knight)
1303 * improvement to the MIPS backend from Thiemo Seufer: C-style
1304 64-bit long long arguments and return values to alien functions
1306 * fixed some bugs revealed by Paul Dietz' test suite:
1307 ** the type-error signalled from WARN has a filled-in DATUM slot.
1308 ** the type-error required when a stream is not associated with
1309 a file has the stream as its datum.
1310 ** type-errors on single-floats on x86-64 no longer have
1311 :INVALID-OBJECT as the datum
1312 ** the type-errors signalled for invalid function names now have
1313 a correct expected type
1314 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1315 for structures defined with a :TYPE. Documentation strings for
1316 typed structures are no longer immediately discarded
1317 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1318 broadcast streams and synonym streams. FILE-LENGTH now also works
1319 on broadcast streams.
1321 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1322 * incompatible change: the --noprogrammer option, deprecated since
1323 version 0.7.5, has been removed. Please use the equivalent
1324 --disable-debugger option instead.
1325 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1327 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1328 inoperational for a while now) has been completely removed.
1329 * null lexical environments are now printed as #<NULL-LEXENV>,
1330 significantly reducing the amount of clutter in typical backtraces.
1331 * documentation on weak pointers, finalization, and after GC hooks
1332 has been added to the manual.
1333 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1334 as other specialized array types, is much faster. SUBSEQ and
1335 COPY-SEQ on such arrays have also been sped up.
1336 * optimization: EQL is now more efficient when at least other argument
1337 is known to be of type (OR FIXNUM (NOT NUMBER)).
1338 * fixed bug: the runtime is now less vulnerable to changes in the
1339 size of the SBCL object on OS X, and virtual memory is reserved for
1340 all spaces that need to be at a fixed address.
1341 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1342 * fixed bug: finalizers and after GC hooks that cause consing are now
1344 * fixed bug: compiler error messages and summaries are now printed to
1345 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1346 * fixed inference of the upper bound of an iteration variable.
1347 (reported by Rajat Datta).
1348 * fixed bug 211e: calling local functions with duplicated constant
1349 keyword argument no longer causes a bogus style warning about an
1351 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1352 ftype declaration to be disregarded. (reported by Dave Roberts)
1353 * fixed bug 373: caused by erronous compilation of references to alien
1354 variables in the runtime on ppc/darwin.
1355 * fixed bug 376: CONJUGATE type deriver.
1356 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1357 (reported by Baughn on #lisp)
1358 * a cross-compiler bug on non-x86 platforms has been identified and
1359 fixed. (thanks to Bruno Haible)
1360 * improvements to the MIPS runtime code for increased stability.
1361 (thanks to Thiemo Seufer)
1362 * increased the maximimum compact environment size to allow
1363 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1364 * partial workaround for bug 135: don't name the function we're
1365 calling for hairy cases of EVAL, so as not to accumulate one environment
1366 entry per call to EVAL. (reported by Kevin Reid)
1367 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1368 * optimization: type testing for non-vector arrays should be faster.
1369 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1371 * bug fix: setting 31st element of a bit vector to zero did not work
1373 * bug fix: redefining a class definition which failed due to a
1374 previous accessor / function clash now works (but see BUGS entry
1375 #380 for more problems in this area). (thanks to Zach Beane)
1376 * the long form of DEFINE-METHOD-COMBINATION disables method group
1377 checking when given a single method group with pattern *. (thanks
1379 * on x86 compiler supports stack allocation of results of simple
1380 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1381 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1382 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1383 * fixed some bugs related to Unicode integration:
1384 ** the restarts for recovering from input and output encoding
1385 errors only appear when there is in fact such an error to
1387 * fixed some bugs revealed by Paul Dietz' test suite:
1388 ** MISC.549 and similar: late transformation of unsafe type
1389 assertions into derived types caused unexpected code
1391 ** SCALE-FLOAT type deriver is less wrong.
1392 ** type derivers for EXP, LOG and similar functions compute result
1393 types for complex arguments better.
1394 ** (MISC.563) CONJUGATE type deriver works for very restricted
1396 ** out-of-line type testers for character strings are available.
1397 ** EQUAL compiler transform understands specialness of objects
1399 ** accessing double-floats stored on the stack now works on x86-64.
1400 ** debugger internals could sometimes create invalid lispobjs,
1401 resulting in GC crashes.
1402 ** MISC.548: type check weakening can convert required type into
1404 ** initialization forms for bindings are not in scope of free special
1407 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1408 * incompatible change: thread support for non-NPTL systems has
1409 been removed - locking is buggy and unreliable. A threaded
1410 SBCL build will now warn at startup and refuse to create
1411 new threads, unless futex support is detected in the kernel
1412 * incompatible change: the top level REPL now has only an ABORT
1413 restart associated with it, not TOPLEVEL and ABORT as it used to.
1414 TOP and TOPLEVEL are now available as debugger commands for
1415 returning to the top level.
1416 * incompatible change: forms evaluated in the REPL now use the
1417 global optimization policy.
1418 * incompatible change: user- and system-initialization files are
1419 no longer processed with LOAD, but by READ and EVAL; hence the
1420 global optimization policy, startup package, readtable, etc,
1422 * The .fasl file format number has been incremented because of
1423 various incompatible changes.
1424 * internal entry point details and argument counts no longer appear
1425 in backtraces unless explicitly requested by setting
1426 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1427 * built-in and standard functions no longer have names like "top
1428 level local call to FOO".
1429 * fixed bug 32: functions defined in non-null lexical environments
1430 now have more legible printed representation
1431 * fixed bug 33: functions defined in non-null lexical environemnts
1432 are now more amenable to inspection by INSPECT.
1433 * workaround for bug 354: XEPs no longer appear in backtraces unless
1434 explicitly requested.
1435 * fixed bug: receiving the signal which results from attempting to
1436 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1437 SIGBUS on other *BSDs) on architectures where the C stack is also
1438 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1439 to debugger confusion or wild instability. (reported by Cheuksan
1441 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1442 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1443 (reported by Lutz Euler)
1444 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1445 compiled code. (reported by Paul Dietz)
1446 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1447 specialized parameter to a method to something that is not TYPEP
1448 the specializer is now possible.
1449 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1450 face of package deletion.
1451 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1452 pathname. (reported by David Tolpin on c.l.l)
1453 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1454 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1455 STRING-STREAM and FILE-STREAM, respectively.
1456 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1457 than previously; in addition, its test suite is now run on build.
1458 (thanks to Luke Gorrie)
1459 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1460 * optimization: added a immediate representation for single-floats
1462 * fixed some bugs revealed by Paul Dietz' test suite:
1463 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1464 ** attempting to create a package with a colliding nickname causes
1465 correctable errors to be signalled.
1466 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1467 ** several x86-64 backend bugs related to sign-extension of immediate
1470 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1471 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1472 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1474 * fixed loading of multiply forward-referenced layouts.
1475 (thanks to Cheuksan Wang)
1476 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1477 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1478 (see COMPILE-FILE documentation for details of :PRINT option)
1479 * fixed bugs 19 and 317: fixed-format floating point printing is
1480 more accurate. This also fixes a bug reported by Adam Warner
1481 related to the ~@F format directive.
1482 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1484 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1485 dispatch table if the from-char is a dispatch macro character.
1486 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1487 by the wordsize no longer ignore the last word. (reported by Lutz
1489 * fixed bug in type checking of dynamic-extent variables. (reported
1491 * optimization: sequence traversal functions use their freedom to
1492 coerce function designators to functions.
1493 * optimization: code with many calls to CLOS methods specialized on
1494 CLOS classes has had redundant type checks removed.
1495 * optimization: added declarations to speed up operations that access
1496 the internal character database (for example STRING-UPCASE)
1497 * optimization: comparison operations between floats and sufficiently small
1498 fixnums no longer create extra rationals
1499 * fixed some bugs related to Unicode integration:
1500 ** portions of multibyte characters at the end of buffers for
1501 character-based file input are correctly transferred to the
1502 start of the buffer at the next read.
1503 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1504 passing it through to OPEN.
1505 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1506 argument given to internal calls to OPEN.
1507 ** the built-in comment readers (introduced by character sequences
1508 ";" and "#|") are more forgiving to encoding errors; they will
1509 STYLE-WARN and then attempt to resync the stream at a character
1510 boundary. (thanks to Teemu Kalvas)
1511 * fixed some bugs in the x86-64 port:
1512 ** Negative short int return values from c-calls are sign-extended
1514 ** The stack is aligned to 16-bytes for c-calls, as required by
1515 the ABI. (thanks to Cheuksan Wang)
1516 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1517 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1518 for enums. (thanks to Vincent Arkesteijn)
1519 ** Multiple small optimizations and bugfixes for floating point
1521 * fixed some bugs revealed by Paul Dietz' test suite:
1522 ** Space, Tab, Linefeed, Return and Page have the invalid
1523 secondary constituent character trait.
1524 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1526 ** WITH-INPUT-FROM-STRING should only update the index place on
1528 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1529 works more reliably.
1530 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1531 with one-dimensional arrays with fill pointers.
1532 ** TYPE-OF failed on a complex with an integer realpart and a
1534 ** compiler failure during type inference for the code of form
1535 (IF (EQL X (THE ...)) ...) (MISC.535).
1537 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1538 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1539 platform. The port supports 61-bit fixnums, large memory spaces
1540 and reloading shared object files.
1541 * enhancement: saving cores with foreign code loaded is now
1542 supported on ppc/Darwin in addition to the previously supported
1544 * enhancement: the statistical profiler now walks deeper into the
1545 call stack for more meaningful call-graphs and accrued time
1546 reports (x86/x86-64 only). It also now reports time spent in
1548 * enhancement: it is now possible to trace most individual methods
1549 of a generic function in addition to tracing the generic function
1551 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1553 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1554 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1555 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1556 produces an error. (thanks to Vincent Arkesteijn)
1557 * bug fix: NAMESTRING on pathnames with :WILD components in their
1558 directories works correctly. (thanks to Artem V. Andreev)
1559 * fixed bug 125: compiler preserves identity of closures. (reported
1561 * bug fixed: functions with &REST arguments sometimes failed with
1562 "Undefined function" when compiled with (DEBUG 3). (reported by
1564 * bug fix: overflow during compiling of setting element of a bit
1565 vector with constant index and value. (reported by Timmy Douglas)
1566 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1567 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1568 * on x86 compiler partially supports stack allocation of dynamic-extent
1570 * GO and RETURN-FROM do not check the extent of their exit points
1571 when compiled with SAFETY 0.
1572 * fixed some bugs related to Unicode integration:
1573 ** encoding and decoding errors are now much more robustly
1574 handled; it should now be possible to recover even from invalid
1575 input or output to the terminal. (thanks to Teemu Kalvas)
1576 ** provided a first cut at implementing STRING-TO-OCTETS and
1577 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1578 ** altered the SB-MD5 contributed module slightly, changing the
1579 interface just enough for it to be supportable for builds where
1580 lisp characters are not eight bits.
1581 * fixed some bugs revealed by Paul Dietz' test suite:
1582 ** the FORMATTER-generated functions for ~V[ conditionals require
1583 the correct number of arguments.
1584 ** READ-FROM-STRING returns the mandated second value when applied
1585 to displaced strings.
1586 ** the #\Rubout and #\Backspace characters are treated as invalid
1587 constituent characters by the tokenizer.
1589 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1590 * new feature: reloading changed shared object files with
1591 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1592 * new feature: references to foreign variables and functions
1593 can now be compiled and loaded before the corresponding shared
1594 object file is loaded, as long as the foreign definitions are
1595 available at runtime.
1596 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1597 supported. (thanks to Dan Debertin)
1598 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1599 just keywords. (thanks to Vincent Arkesteijn)
1600 * fixed bug #331: structure-class instances corresponding to
1601 DEFSTRUCT forms are now created eagerly.
1602 * fixed bug #345: backtraces from calls to undefined functions work
1603 on x86 as well. Related bug #61 is now also partially fixed on x86
1604 (backtraces from throws to unknown catch tags.)
1605 * bug fix: lambda-list parsing is now stricter vrt. order and number
1606 of lambda-list keywords.
1607 * bug fix: as specified by AMOP, an error is signalled if a
1608 class-option appears multiple times in a DEFCLASS form. (reported
1610 * bug fix: RANDOM can be compiled when the compiler derives the type
1611 of its numeric argument as a disjoint set of small integers.
1612 (reported by Paul Dietz)
1613 * bug fix: starting a core saved with shared objects loaded when
1614 those objects are not available no longer causes threaded SBCL to
1615 hang. (reported by Sean Ross)
1616 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1618 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1619 argument, which must always be NIL. (reported by Kalle Niemitalo)
1620 * bug fix: printing 1.0d+23 no longer results in an error.
1621 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1622 * bug fix: structure slot setters preserve evaluation order. (thanks
1624 * fixed some bugs related to Unicode integration:
1625 ** RUN-PROGRAM can allow its child to take input from a Lisp
1626 stream. (reported by Stefan Scholl)
1627 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1628 locales. (reported by Ken Causey)
1629 * fixed some bugs revealed by Paul Dietz' test suite:
1630 ** INCF, DECF and REMF evaluate their place form as specified in
1632 ** FORMATTER expands ~{ ~} iteration directives with V or #
1633 parameters correctly.
1634 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1635 consequent uses no arguments correctly.
1636 ** the system has a partial understanding of the (COMPLEX RATIO)
1638 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1641 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1642 * new feature: a build-time option (controlled by the :SB-UNICODE
1643 keyword feature, enabled by default) for building the system with
1644 support for the entire 21-bit character space defined by the
1646 * new feature: the system now has rudimentary external-format
1647 support; the primary user-visible change at this time is that
1648 characters with the high bit set (such as lower-case-e-acute) will
1649 print correctly to a terminal in a UTF-8 environment.
1650 * minor incompatible change: BASE-CHAR no longer names a class;
1651 however, CHARACTER continues to do so, as required by ANSI.
1652 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1653 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1654 has been moved to the SB-EXT package (temporarily re-exported from
1656 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1657 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1659 * fixed bug #351: better error-handlind and reporting for malformed
1661 * fixed bug #350: bignum-printing is now more memory-efficient,
1662 allowing printing of very large bignums, eg. (expt 2 10000000).
1663 (reported by Bruno Haible)
1664 * fixed bug #302: better primitive-type selection for intersection
1666 * fixed bug #308: non-graphic characters now all have names, as
1667 required. (reported by Bruno Haible)
1668 * bug fix: redefining a class with different superclasses now correctly
1669 removes it from the direct-subclasses of its previous superclasses.
1670 (reported by David Morse)
1671 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1672 new value now works. (reported by Bruno Haible)
1673 * bug fix: correct canonicalization of multiple non-standard slot
1674 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1675 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1676 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1677 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1678 now exists, an signals an error.
1679 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1680 during macroexpansion for non-iteration variables as well. (reported
1681 by Bruno Haible for CMUCL)
1682 * bug fix: Cyclic structures and unprintable objects in compiler
1683 messages no longer cause errors. (reported by Bruno Haible)
1684 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1685 and READ-FROM-STRING all now return a primary value of NIL if
1686 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1687 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1688 (reported by Bruno Haible for CMUCL)
1689 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1690 do not designate a condition. (reported by Bruno Haible for
1692 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1693 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1694 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1695 permitting resolution in favour of any of the conflicting symbols.
1696 (reported by Bruno Haible for CMUCL)
1697 * bug fix: EQUAL compiler optimizations is less aggressive on
1698 strings which can potentially compare true despite having distinct
1699 specialized array element types.
1700 * bug fix: unit enumerations can be defined without dividing by
1701 zero. (thanks to Vincent Arkesteijn)
1702 * FORMAT compile-time argument count checking has been enhanced.
1703 (report from Bruno Haible for CMUCL)
1704 * a partial workaround for the bug 262: the compiler does not try to
1705 inline-expand a local function doing RETURN-FROM from a deleted
1706 BLOCK. (thanks to Peter Denno for the bug report and to David
1707 Wragg for the simple test case)
1708 * fixed some bugs revealed by Paul Dietz' test suite:
1709 ** RENAME-PACKAGE allows all package designators as new package
1711 ** constraint propagation and lambda variable substitution are
1712 more cautious in dealing with partially deleted code.
1713 ** compiler sometimes lost reoptimization passes.
1714 ** CERROR, given a condition as condition designator, passes its
1715 remaining arguments to the continue format control without
1717 ** Case-altering FORMAT directives work correctly on non-ASCII
1719 ** The REAL type specifier handles bounds outside the floating
1720 point ranges without signalling FLOATING-POINT-OVERFLOW.
1721 ** Functions with IR1-transformations can create intercomponent
1722 references to global functions.
1723 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1725 ** FORMAT ~R treats a nil value for its first parameter correctly.
1727 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1728 * enhancement: saving cores with foreign code loaded is now
1729 supported on x86/NetBSD and sparc/Linux in addition to the previously
1730 supported platforms.
1731 * bug fix: on some platforms repeated installations caused multiple
1732 copies of HTML documentation to be installed -- should not happen
1733 any more. (reported by Stefan Scholl)
1734 * bug fix: parsing self-recursive alien record types multiple times
1735 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1736 original patch by Helmut Eller for CMUCL)
1737 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1738 (thanks to Richard Kreuter)
1739 * bug fix: defining classes whose accessors are methods on existing
1740 generic functions in other (locked) packages no longer signals
1741 bogus package lock violations. (reported by François-René Rideau)
1742 * bug fix: special variables as DEFMETHOD parameters no longer have
1743 associated bogus type declarations. (reported by David Wragg and
1745 * bug fix: read-write consistency on streams of element-type
1746 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1747 * bug fix: redefiniton of the only method of a generic function with
1748 no DEFGENERIC no longer emits a full WARNING. In addition,
1749 redefinition of generic functions with no DEFGENERIC to an
1750 incompatible lambda list now signals an error. (thanks to Zach
1752 * bug fix: DEFGENERIC now works even when there's a function of the
1753 same name in an enclosing lexical environment. (thanks to Zach
1755 * fixed compiler failure, caused by instrumenting code during
1756 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1757 * optimization: added loop analysis and improved register allocation
1758 * fixed some bugs revealed by Paul Dietz' test suite:
1759 ** POSITION on displaced vectors with non-zero displacement
1760 returns the right answer.
1761 ** (SIMPLE-STRING) is a valid type specifier for sequence
1763 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1765 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1766 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1768 ** The justification version of the FORMAT ~< directive treats
1769 non-zero minpad parameter correctly.
1771 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1772 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1773 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1774 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1775 the supported interface.
1776 * new feature: Single-stepping of code compiled with DEBUG 2 or
1777 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1778 * new feature: saving cores with foreign code loaded is now
1779 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1780 Timothy Moore's work for CMUCL)
1781 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1782 parameters to * instead of NIL if no initform is supplied.
1783 (reported by Johan Bockgaard)
1784 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1785 correctly when FUNCALL appears as the car of the form. Note:
1786 despite this FUNCALL forms are not currently subject to
1787 compiler-macro expansion. (port of Raymond Toy's fix for the
1788 same from CMUCL, reported by Johan Bockgaard)
1789 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1790 (thanks for Teemu Kalvas)
1791 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1792 case instead of terminating the iteration (thanks for Julian
1793 Squires, Sean Champ and Raymond Toy)
1794 * bug fix: incorrect expansion of defgeneric that caused a style
1795 warning. (thanks for Zach Beane)
1796 * bug fix: slot accessor effective method computation works properly
1797 for classes with multiple non-standard applicable methods on
1798 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1799 * on x86 compiler supports stack allocation of results of LIST and
1800 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1801 CMUCL implementation by Gerd Moellmann)
1802 * fixed some bugs revealed by Paul Dietz' test suite:
1803 ** FORMAT strings with both the ~<~:;~> form of the justification
1804 directive and pretty-printing directives cause an error.
1806 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1807 * incompatible change: the internal functions
1808 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1809 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1810 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1811 instead of the old functions.
1812 * new feature: on platforms where "dladdr" is available foreign
1813 function names now appear in backtraces. (based on Helmut Eller's
1815 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1816 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1818 * documentation: ASDF manual is now distributed with SBCL.
1819 * bug fix: SBCL can now load its contributed modules with REQUIRE
1820 even if the system-provided entries have been removed from
1821 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1823 * bug fix: backtraces involving undefined functions or assembly
1824 routines are more informative. (thanks to Brian Downing)
1825 * bug fix: mutually referent alien structures now work correctly.
1826 (reported by Rick Taube)
1827 * bug fix: structures defined by WITH-ALIEN can be referred to
1828 within other definitions in the same WITH-ALIEN.
1829 * bug fix: division operators (MOD, TRUNCATE and the like) with
1830 constant zero divisors and integer dividends no longer generate
1832 * bug fix: provide default methods for INPUT-STREAM-P and
1833 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1834 * bug fix: improve the detection and resolution of MOP metacycles
1835 (where effective method computation depends on the generic function
1836 having its effective method computed). (reported by Bruno Haible)
1837 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1838 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1839 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1840 * bug fix: pathnames with relative directory components can be
1841 represented relative to default pathnames.
1842 * optimization: in taking the GCD of bignums, reduce the two bignums
1843 to approximately the same size (using Euclid's algorithm) before
1844 applying the more sophisticated binary GCD. (thanks to Juho
1846 * optimization: COUNT on bitvectors now operates word-at-a-time.
1847 * optimization: ASH with a positive, but not necessarily constant,
1848 (leftwards) shift, when in a modular context, is compiled to a
1850 * fixed some bugs revealed by Paul Dietz' test suite:
1851 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1852 if the corresponding argument is NIL.
1853 ** FORMAT directives accepting a minpad parameter treat negative
1855 ** literal commas as character parameters to FORMAT directives are
1857 ** literal spaces directly after ~<Newline> directives within a
1858 format-logical-block (~:< ~@:>) do not induce :FILL-style
1859 conditional newlines.
1860 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1861 as specified: it no longer includes conditional newlines).
1862 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1864 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1865 :PER-LINE-PREFIX argument does not evaluate to a string.
1867 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1868 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1869 the manual for details; for now, package locks can be disabled by
1870 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1871 if no major problems are found then it is likely that they will be
1872 compiled in unconditionally.
1873 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1874 unsupported operators on all platforms. To load a shared library
1875 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1876 object file, link it into a shared library outside of SBCL and
1877 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1879 * bug workaround: ROOM T and the GC were not working together
1880 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1881 reporting facility aren't preserved. That reporting has been
1882 disabled, so now until and unless someone figures out how to make it
1883 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1884 * minor incompatible change: as threatened around sbcl-0.8.0, the
1885 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1886 The symbols are also exported from SB-PCL for backwards
1887 compatibility, but more so than before SB-PCL should be treated as
1888 an implementation-internal package.
1889 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1891 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1892 It is known as of this release not to work on the Alpha, however.
1893 * fixed bug #167: errors signalled due to illegal syntax in method
1894 bodies are now more legible.
1895 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1896 designators and can hence be used with TYPEP.
1897 * fixed bug #333: CHECK-TYPE now ensures that the type error
1898 signalled, if any, has the right object to be accessed by
1899 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1900 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1901 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1903 * fixed bug #334: programmatic addition of slots using specialized
1904 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1905 and :ALLOCATION :CLASS slots.
1906 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1907 float exponents. (rereported by Peter Seibel)
1908 * fixed a bug: #\Space (and other whitespace characters) are no
1909 longer considered to be macro characters in standard syntax by
1910 GET-MACRO-CHARACTER.
1911 * fixed bug: initialization of condition class metaobjects no longer
1912 causes an instance of the condition to be created. (reported by
1914 * fixed bug: it is now possible to have slots such that
1915 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1916 description is neither :INSTANCE nor :CLASS.
1917 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1918 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1919 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1920 non-standard SLOT-DEFINITION-ALLOCATION values.
1921 * fixed bugs: various race conditions handling exiting threads.
1922 CL-PPCRE's thread torture test now passes.
1923 * fixed arguably-a-bug: GC time proportional to number of threads in
1924 system even when most of them are idle
1925 * optimization: improved performance of BIT and SBIT on bit-vectors.
1926 * .fasl file incompatibility: The fasl file version number has
1927 been incremented because of changes associated with package locks.
1929 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1930 * minor incompatible change: the system no longer provides
1931 optimization hints (conditions which are TYPEP
1932 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1933 mode; these hints are still emitted when higher SPEED optimization
1935 * new contrib module: a sampling profiler (profiling by statistical
1936 sampling, rather than by instrumenting functions) is available as
1937 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1938 * the behaviour of the standard function ED is now customizeable by
1939 third parties through a hook variable: see ED's documentation
1940 string for information on the protocol.
1941 * the compiler no longer emits efficiency notes for (FUNCALL X)
1942 when the type of X is uncertain under default optimization
1944 * fixed bug 276: mutating a binding of a specialized parameter to a
1945 method to something that is not TYPEP the specializer is now
1947 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1948 exhibit the required behaviour on the x86 platform. (thanks to
1949 Peter van Eynde, Eric Marsden and Bruno Haible)
1950 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1951 even for difficult arguments. (reported by Peter Graves)
1952 * fixed bug 141a: the backquote printer now descends quoted
1954 * fixed another bug in backquote printing: no more destructive
1955 modification of the form's list structure. (reported by Brian
1957 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1958 move between its address being taken and the call to
1959 interrupt_thread, fixing a crashing race condition.
1960 * the SB-POSIX contrib implementation has been adjusted so that it
1961 no longer exhibits ridiculously poor performance when constructing
1962 instances corresponding to C structs.
1964 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1965 * minor incompatible change: the sb-grovel contrib now treats C
1966 structures as alien (in the sense of SB-ALIEN) objects rather than
1967 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1968 has implications for memory management of client code
1969 (sb-grovel-returned objects must now be manually managed) and for
1970 type safety (alien objects now have full types).
1971 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1972 used to control emission of compiler diagnostics, rather than the
1973 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1974 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1975 quality should be considered deprecated.
1976 * install.sh now installs the user manual as well
1977 * (not quite a new documentable feature, but worth considering in
1978 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1979 beginnings of a semantically meaningful condition hierarchy is
1980 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1982 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1983 designator as the defaults argument.
1984 * fixed bug: Displaced arrays whose displaced-to array has become
1985 too small now cause ARRAY-DIMENSION to signal an error, providing
1986 for safer bounds-checking. (reported by Bruno Haible)
1987 * fixed bug: DEFCLASS slot definitions with identical :READER and
1988 :WRITER names now signal a reasonable error. (reported by Thomas
1990 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1992 * fixed bug: Invalid slot specification errors now print correctly.
1993 (thanks to Zach Beane)
1994 * fixed bug 320: Shared to local slot value transfers in class
1995 redefinitions now happen corrently from superclasses as
1996 well. (reported by Bruno Haible)
1997 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1999 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2000 improper lists correctly. (reported by Bruno Haible)
2001 * fixed bug 313: source-transform for <fun-name> was erroneously
2002 applied to a call of a value of a variable with name <fun-name>.
2003 (reported by Antonio Menezes Leitao)
2004 * fixed bug 307: The obsolete instance protocol ensures that
2005 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2006 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2007 remove dead unknown-values globs from the middle of the stack.
2008 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2009 easier to resume long computations after using *BREAK-ON-SIGNALS*
2010 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2011 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2012 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2013 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2014 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2015 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2017 * fixed a (fairly theoretical) bug in string printing: if
2018 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2019 does not have array-element-type equal to the most general string
2021 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2022 function name. (thanks to Nikodemus Siivola)
2023 * fixed bug: compile-time format string checker failed on
2024 non-closed ~{. (reported by Thomas F Burdick)
2025 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2026 don't warn on legal loop code involving more than one aggregate
2027 boolean. (thanks to Nikodemus Siivola)
2028 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2029 in keyword position to MAKE-PACKAGE was not being reported as
2031 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2032 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2034 * fixed bugs 280 and 312: the checking for multiple definitions in a
2035 file is less likely to become confused by uses of inline
2037 * fixed bug: the #S reader macro performs the keyword coercion
2038 specified for slot names. (reported by Kalle Niemitalo)
2039 * fixed bug: lambda lists may contain symbols whose names start with
2040 & but are not lambda-list-keywords; their occurrence triggers a
2042 * fixed bug 321: define-method-combination argument lambda lists do
2043 not cause invalid code to be generated when &optional or &aux
2044 variables have default values. (reported by Bruno Haible)
2045 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2046 have CLOS classes; this appears also to have fixed reported
2047 instability in stack exhaustion detection.
2048 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2049 MUFFLE-WARNING when no associated restart is present is now
2051 * optimization: rearranged the expansion of various defining macros
2052 so that each expands into only one top-level form in a
2053 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2055 * optimization: used a previously little-used slot in symbols to
2056 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2058 * fixed some bugs revealed by Paul Dietz' test suite:
2059 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2061 ** Fixed an optimization bug related to inheritance of initforms
2062 from local to shared slots.
2063 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2064 ** CAST optimizer forgot to flush argument derived type.
2065 ** print/read consistency on floats is now orders of magnitude
2066 more likely. (thanks also to Bruno Haible for a similar report
2068 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2069 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2070 for objects of type REAL. Make it so.
2071 ** SXHASH is specified (infelicitously) to respect similarity,
2072 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2073 it so. (thanks to Markus Ziegler)
2074 ** on the Alpha, the compiler succeeds in compiling functions
2075 returning a known number of arguments greater than 63.
2076 ** fixed handling of invalid NIL arguments in keyword position
2078 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2080 ** provided a readably-printable representation for RANDOM-STATE
2082 ** ensured that pathnames, where they have a namestring, always
2083 print using #P"..." syntax.
2085 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2086 * Support for the forthcoming 2.0 version of the NetBSD kernel
2087 running on x86 hardware has been added. (thanks to Perry
2088 E. Metzger most immediately, and others for their past work)
2089 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2090 current release version; SBCL's OpenBSD support had been broken
2091 since about the time of OpenBSD's switch to ELF binary format.)
2092 * [placeholder for DX summary]
2093 ** user code with &REST lists declared dynamic-extent, under high
2094 speed or space and low safety and debug optimization policy.
2095 * The manual has been converted to Texinfo format and the debugger
2096 chapter from the cmucl manual has been added.
2097 * A facility has been added to extract documentation strings from
2098 sbcl and store them as Texinfo-formatted snippets for inclusion in
2099 the manual (via Texinfo's @include directive)
2100 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2101 the test case to Dave Roberts)
2102 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2103 pointers. (reported by Sean Ross)
2104 * bug fix: PROFILE output is printed nicely even for large numerical
2105 values. (thanks to Zach Beane)
2106 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2107 greater than 32 handle EOF correctly.
2108 * bug fix: on X86 an immediate argument of the IMUL instruction is
2109 correctly printed in disassembly. (thanks to Lutz Euler)
2110 * bug fix: class slots in redefined classes preserve their old
2111 values. (thanks to Bruno Haible and Nikodemus Siivola)
2112 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2113 succeeds. (reported by Marco Baringer)
2114 * fixed some bugs revealed by Paul Dietz' test suite:
2115 ** READ-SEQUENCE now works on ECHO-STREAMs.
2116 ** RATIONALIZE works more according to its specification. (thanks
2119 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2120 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2121 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2122 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2123 should matter to you only if you rebind the printer control
2124 variables and then find you want different bindings in the
2125 debugger than in the ordinary execution of your program.)
2126 * The runtime build system has been tweaked to support building
2127 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2128 assembler and linker. (thanks to Nikodemus Siivola)
2129 * Unbound, undefined, undeclared variables now trigger full
2130 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2131 more often programmer error than deliberate exploitation of undefined
2133 * optimization: the hash algorithm for strings has changed to one
2134 that is less vulnerable to spurious collisions. (thanks to Juho
2136 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2137 needless bounds checking. (thanks to Juho Snellman)
2138 * optimization: implemented multiplication as a modular
2139 (UNSIGNED-BYTE 32) operation on the PPC backend.
2140 * fixed some bugs revealed by Paul Dietz' test suite:
2141 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2143 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2144 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2145 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2147 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2149 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2151 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2152 their output stream on EOF from read.
2153 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2154 have been read to end-of-file.
2155 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2157 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2158 description of determination of which consecutive characters
2160 ** Printing the "Space" character with escaping on now yields "#\\ ",
2161 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2162 ** Reading floating-point numbers with *READ-BASE* set to a number
2163 less than 10 works correctly.
2164 ** Reading floating-point numbers with *READ-BASE* set to a number
2165 more than 10 works correctly.
2166 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2167 the readtable currently in effect.
2169 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2170 * minor incompatible change: parsing of namestrings on a physical
2171 (Unix) host has changed; numbers after the final #\. in a
2172 namestring are no longer interpreted as a version field. This is
2173 intented to be largely invisible to the user, except that the
2174 meaning of the namestring "*.*.*" has changed: it now refers to a
2175 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2176 should usually be replaced by
2177 (make-pathname :name :wild :type :wild :version :wild)
2178 with the added benefit that this is more likely to be portable.
2179 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2180 option to OPEN now signals an error if the file being opened
2181 exists; this may have an impact on existing code.
2182 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2183 signals received, on the PowerPC platforms (both Linux and
2184 Darwin). (thanks to Pierre Mai for pointing out the location of
2186 * several fixes on OS X: The system now builds and runs cleanly on
2187 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2188 (thanks to Brian Mastenbrook)
2189 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2190 second-resolution: integer multiples of 1/3600 between -24 and 24.
2191 (thanks to Vincent Arkesteijn)
2192 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2193 type when called with 1 argument; PEEK-CHAR checked type of
2194 PEEK-TYPE only after having read first character from a
2195 stream. (reported by Peter Graves)
2196 * bug fix: the garbage collector now has much better locality
2197 behaviour, and in particular no longer treats all memory as being
2198 exhausted when many small objects point to each other in a deeply
2200 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2201 recognized as being TYPEP their class.
2202 * bug fix: the PUSHNEW documentation string has been corrected.
2203 (thanks to Vincent Arkesteijn)
2204 * bug fix: defaulting of the value for the last of an atypically
2205 large number of multiple values being bound was not being
2206 performed correctly on the Alpha or PPC platforms
2207 * optimization: implemented multiplication as a modular
2208 (UNSIGNED-BYTE 32) operation on the x86 backend.
2209 * optimization: SEARCH on simple-base-strings can now be open-coded.
2210 (see also contrib/compiler-extras.lisp for inspiration for
2211 teaching the compiler about the Boyer-Moore algorithm).
2212 * value, returned by MAX (and MIN) called with several EQUALP, but
2213 not EQL, arguments now does not depend on compiler settings.
2214 * fixed some bugs revealed by Paul Dietz' test suite:
2215 ** in stack analysis liveness information is propagated from
2216 non-local entry points.
2217 ** pathwise CAST removing failed when the CAST node did not start
2219 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2220 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2222 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2223 host is already defined.
2224 ** RENAME-FILE works on streams instead of signalling an internal
2226 ** PEEK-CHAR uses the current readtable when determining whether
2227 or not a character is whitespace.
2228 ** MERGE-PATHNAMES handles the case when the pathname does not
2229 specify a name while the default-pathname specifies a version.
2230 ** Pathnames now stand a better chance of respecting print/read
2232 ** Attempting to use standardized file system operators with a
2233 pathname with invalid :DIRECTORY components signals a
2235 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2237 ** DIRECTORY on logical pathnames is more correct.
2238 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2239 signal a TYPE-ERROR if their argument is not a stream.
2240 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2241 designator argument does not designate a stream.
2242 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2243 examining the synonym.
2244 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2246 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2247 element-type larger than ([UN]SIGNED-BYTE 32).
2249 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2250 * When built with the :SB-FUTEX feature, threaded builds now take
2251 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2252 for faster/more reliable mutex and condition variable support.
2253 * Incompatible change (but one you probably shouldn't have been using
2254 anyway): the interface and code for arbitrating between multiple
2255 threads in the same user session has been redesigned.
2256 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2257 error when called without an explicit environment argument.
2258 (thanks to Nikodemus Siivola)
2259 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2260 confused about their position. (thanks to Adam Warner and Gerd
2262 * bug fix: Pretty printing backquoted forms with unquotations in the
2263 argument list position of various code constructs such as LAMBDA
2264 now works correctly. (reported by Paul Dietz)
2265 * bug fix: Pretty printing unquotations no longer loses all
2266 stream position information.
2267 * optimization: performance of string output streams is now less
2268 poor for multiple small sequence writes.
2269 * optimization: performance of CSUBTYPEP in the presence of complex
2270 expressions involving CONS and NOT many times has been improved.
2271 (reported by Paul Dietz)
2272 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2274 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2275 streams for the REPL, for the debugger, and so on. (thanks to
2277 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2278 * fixed some bugs revealed by Paul Dietz' test suite:
2279 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2280 is ignored if it is too small, rather than propagating through
2281 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2282 ** extremely complex negations of CONS types were not being
2283 sufficiently canonicalized, leading to inconsistencies in
2285 ** VALUES tranformer lost derived type.
2287 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2288 * fixed a bootstrapping bug: the build process no longer assumes
2289 that the various BOOLE-related constants have the same value in
2290 host and target lisps. (noted by Paul Dietz' test suite on an
2291 SBCL binary built from CLISP)
2292 * The system can now be dynamically linked on the MIPS platform,
2293 which enables dynamic loading of foreign code from Lisp. (thanks
2294 to Ralf Baechle for discussions on the MIPS ABI)
2295 * The system now records debugging information for its own source
2296 files in a filesystem-position-independent manner, relative to
2297 the "SYS" logical host.
2298 * fixed a compiler bug: MV-LET convertion did not check references
2299 to the "max args" entry point. (reported by Brian Downing)
2300 * tweaked disassembly notes to be less confident about proclaiming
2301 some instruction as an LRA. (thanks to Brian Downing)
2302 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2303 now each have their own history, command character, and other
2304 characteristics. (thanks to David Lichteblau)
2305 * fixed some bugs revealed by Paul Dietz' test suite:
2306 ** compiler failure in compiling LOGAND expressions including a
2308 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2309 shift greater than 32.
2310 ** FLUSH-DEST did not mark blocks for type check regeneration.
2311 ** HANDLER-CASE failed to accept declarations in handler clauses
2312 in some circumstances.
2314 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2315 * New code in contrib/sb-introspect (still probably not entirely
2316 stable yet) provides some support for smart Lisp development
2317 environments like SLIME.
2318 * The conditions signalled for errors occurring when loading .fasl
2319 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2320 in a way which should help ASDF recover gracefully.
2321 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2322 stuff has been cleaned up. If you code contrib/ stuff, this might
2323 affect you, and you can look at contrib/README, contrib/STANDARDS,
2324 and/or the 0.8.4.27 diff to check.
2325 * In full calls the compiler now does not generate checks for declared
2326 argument types for all arguments.
2327 * various threading fixes
2328 ** and some experimental patches which didn't make it into
2329 the main tree for this release, but which are shipped in
2330 contrib/experimental-thread.patch as a possible fix for some
2331 failures (deadlock, spinning...) in GC-intensive multithreaded
2333 * fixed PPC build problem (source code incompatibility of different
2334 library versions): added offsetof() hackery which attempts to divine
2335 where glibc maintainers put uc_mcontext today
2336 * fixed bug 282: compiler does not trust type assertions while passing
2337 arguments to a full call.
2338 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2339 &OPTIONAL VALUES type parameter.
2340 * fix bug 214: algorithm for noting rejected templates is now more
2341 similar to that of template seletion. (also reported by rydis on
2343 * fixed bug 141b: printing backquoted information readably and prettily
2344 inserts a space where necessary.
2345 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2346 (CHARACTER 10) are now reported as errors, rather than propagated
2347 as unknown types. (reported by piso on #lisp)
2348 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2349 with values NIL and :ERROR. (thanks to Milan Zamazal)
2350 * fixed bug 191c: CLOS now does proper keyword argument checking as
2351 described in CLHS 7.6.5 and 7.6.5.1.
2352 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2353 longer raise an error; further, using a list as a for-as-arithmetic
2354 counter now raises a meaningful error.
2355 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2356 now understood by sequence creation functions such as MAKE-SEQUENCE
2358 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2359 a STRING-INPUT-STREAM.
2360 * compiler enhancement: SIGNUM is now better able to derive the type
2362 * type declarations inside WITH-SLOTS are checked. (reported by
2364 * fixed some bugs revealed by Paul Dietz' test suite:
2365 ** incorrect optimization of TRUNCATE for a positive first
2366 argument and negative second.
2367 ** compiler failure in let-convertion during flushing dead code.
2368 ** compiler failure while deriving type of TRUNCATE on an
2369 interval, containing 0.
2370 ** ASH of a negative bignum by a negative bignum count now returns
2372 ** intersection of CONS types now canonicalizes properly, fixing
2373 inconsistencies in SUBTYPEP.
2375 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2376 * incompatible change: The --disable-debugger command line
2377 option now clobbers the debugger at a more fundamental
2378 level, by redefining #'INVOKE-DEBUGGER instead of by
2379 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2380 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2381 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2382 enter the debugger REPL and then suffer recursive errors
2383 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2384 while under the new system, BREAK in --disable-debugger mode
2385 terminates the system just as an unhandled error would.
2386 * fixed compiler performance when processing loops with a step >1;
2387 * bug fix: DOCUMENTATION now retrieves generic function
2388 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2389 support has been systematized, and now supports the methods
2390 specified by ANSI, along with a default method and a method for
2391 slot documentation. (reported by Nathan Froyd)
2392 * bug fix: effective methods associated with a generic function are
2393 no longer cached over a change of that generic function's method
2394 combination. (reported by Andreas Fuchs)
2395 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2396 names a non-existent directory. (thanks to Andreas Fuchs)
2397 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2398 the PPC platform, lead to stack corruption; this has been fixed.
2399 (reported by Rainer Joswig)
2400 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2401 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2402 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2403 arithmetic in general, is now much more reliable on the PPC
2405 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2406 platform now returns the right answer.
2407 * optimization: restored some effective method precomputation in
2408 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2409 precomputation is now tunable.
2410 * optimization: compiler-internal data structure use has been
2411 reviewed, and changes have been made that should improve the
2412 performance of the compiler by about 20%.
2413 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2414 simple-base-strings and simple-bit-vectors is improved.
2415 * optimization: the optimization of 32-bit logical and arithmetic
2416 functions introduced in version 0.8.3 on the x86 has been
2417 implemented on the mips, ppc and sparc platforms; an
2418 implementation of the same facility, but for 64-bit arithmetic,
2419 has been added for the alpha.
2420 * microoptimization: the compiler is better able to make use of the
2421 x86 LEA instruction for multiplication by constants.
2422 * bug fix: in some situations compiler did not report usage of
2423 generic arithmetic in (SPEED 3) policy.
2424 * bug 145b fix: compiler used wrong type specifier while converting
2425 MEMBER-types to numeric.
2426 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2428 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2429 index argument now works properly on the Alpha platform.
2430 * bug fix: floating point exception treatment on the Alpha platform
2432 * bug fix: FILE-POSITION works much better on string input and
2433 output streams. (thanks to Nikodemus Siivola)
2434 * bug fix: many threading/garbage collection symptoms sorted.
2435 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2436 might be pseudo-atomic.
2437 * internal change: Stopping for GC is now done with signals not
2438 ptrace. GC is now done in whichever thread wanted it, instead of
2440 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2442 * bug fix: result form in DO is not contained in the implicit
2444 * incompatible change: ICR structure is changed; the value part of
2445 CONTINUATION is now called LVAR; corresponding functions are
2446 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2447 * added type deriver for ISQRT (thanks to Robert E. Brown).
2448 * bug fix: better support for loading from the command line when an
2449 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2451 * fixed some bugs revealed by Paul Dietz' test suite:
2452 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2453 ** ROUND and FROUND now give the right answer when given very
2454 small float arguments.
2455 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2457 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2458 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2459 ** LCM should return a non-negative integer.
2460 ** PARSE-INTEGER returned the index of a terminator instead of the
2461 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2462 ** PARSE-INTEGER returned an incorrect index being applied to a
2464 ** LCM with two arguments of 0 returns 0 rather than signalling
2466 ** unsigned addition of a 32-bit constant with the high bit set no
2467 longer causes an internal compiler error on the x86.
2468 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2469 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2470 with negative last argument.
2471 ** byte specifiers with zero size and position no longer cause
2472 an error during type derivation.
2473 ** bignum multiplication on the Alpha platform now returns the
2475 * porting: The system now builds on SuSE AMD64, although it still
2476 generates a 32-bit binary.
2477 * .fasl file incompatibility: The fasl file version number has
2478 been incremented (because of the changes to internal compiler
2479 data structures referred to above).
2481 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2482 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2483 more accurately, on the Darwin kernel running on PowerPC hardware.
2484 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2485 * Compiler code deletion notes now signal a condition of type
2486 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2487 an associated MUFFLE-WARNING restart.
2488 * The compiler now performs limited argument count validation of
2489 constant format strings in FORMAT, and where appropriate in ERROR,
2490 CERROR and WARN. (thanks to Gerd Moellmann)
2491 * New ASDF-INSTALL contrib can be used for automatic download and
2492 installation of third-party Lisp code from CCLAN or other sites
2494 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2495 which forces another thread to execute a function supplied by the
2497 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2498 now accept and act upon their :ELEMENT-TYPE keyword argument.
2499 (reported by Martin Atzmueller, Edi Weitz)
2500 * bug fix: FILE-POSITION now accepts position designators up to
2501 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2502 is the greater. (thanks to Patrik Nordebo)
2503 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2504 Kalle Olavi Niemitalo)
2505 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2506 printable. (reported by Eric Marsden)
2507 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2508 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2509 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2510 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2511 (thanks to Stig Sandoe)
2512 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2513 UNREAD-CHAR now correctly includes the unread character in the
2514 target sequence. (thanks to Gerd Moellmann)
2515 * bug fix in threaded builds: the system can now be suspended and
2516 resumed by shell job control with minimal disruption.
2517 * bug fixes in times and timezones >2038AD
2518 * better handling of "where is GNU make?" problem in build scripts
2519 (thanks to Nikodemus Siivola)
2520 * new optimization: inside a named function any reference to a
2521 function with the same name is considered to be a self-reference;
2522 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2523 optimization quality.
2524 * new optimization on x86: logical functions and + now have
2525 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2526 used when the result is truncated to 32 bits.
2527 * VALUES declaration is partially enabled.
2528 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2529 * fixed some bugs revealed by Paul Dietz' test suite:
2530 ** The system now obeys the constraint imposed by
2531 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2532 types form a lattice under type intersection.
2533 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2534 ** ASSOC now ignores NIL elements in an alist.
2535 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2536 and (1+ MOST-POSITIVE-FIXNUM) answers.
2537 ** The addition of a method with invalid qualifiers to a generic
2538 function does not cause an error to be signalled immediately;
2539 a warning is signalled, and the error is generated only on
2540 calling the generic function.
2541 * changed .fasl file version number, in part to add type codes for
2542 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2543 obscure ANSI requirements
2545 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2546 * fixed bug 148: failure to inline-expand a local function left
2547 garbage, confusing the compiler.
2548 * fixed bugs 3cd: structure slot readers perform type check if the
2549 slot can have an invalid value (i.e. it is either not initialized
2550 or can be written with a less specific slot writer).
2551 * bug fix: the compiler now traps array references to elements off
2552 the end of an array; previously, the bounds checking in some
2553 circumstances could go off-by-one.
2554 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2556 * type declarations for array element types now obey the description
2557 on the CLHS page "Declaration TYPE", as per discussions on
2558 sbcl-help around 2003-05-08. This means that a declaration
2559 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2560 declaration, all references to BAR will be asserted or assumed
2561 (with THE, so dependent on compiler policy) to involve objects of
2562 type FOO. Note that no such declaration is implied in
2563 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2564 * declared types of functions from the "Conditions"
2565 chapter. (reported by Paul Dietz)
2566 * bug fix: CERROR accepts a function as its first argument.
2567 * bug fix: NTH an NTHCDR accept a bignum as index
2568 arguments. (reported by Adam Warner)
2569 * optimization: character compare routines now optimize comparing
2570 against a constant character. (reported by Gilbert Baumann)
2571 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2572 argument now works properly on the MIPS platform.
2573 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2574 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2575 declared to have a functional type, does not cause an error
2577 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2578 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2579 * fixed bug: if last continuation of a deleted block has a
2580 destination, this destination should be deleted too. (reported by
2582 * fixed a bug in the bootstrap process: the host compiler's values
2583 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2584 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2585 test case from Patrik Nordebo)
2586 * improved the ability of the disassembler on the PPC platform to
2587 provide helpful disassembly notes.
2588 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2589 the class in more cases than previously.
2590 * bug fix: FILE-POSITION now understands :START and :END for
2591 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2592 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2593 8) data. (thanks to David Lichteblau)
2594 * bug fix: it is possible to add a method to a generic function
2595 without lambda list.
2596 * bug fix: reader failed to signal END-OF-FILE inside an
2597 object representation. (reported by Nikodemus Siivola)
2598 * fixed some bugs revealed by Paul Dietz' test suite:
2599 ** LAST and [N]BUTLAST should accept a bignum.
2600 ** condition slot accessors are methods.
2601 ** (VECTOR NIL) is a subtype of STRING.
2603 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2604 * minor incompatible change: some nonsensical specialized lambda
2605 lists (used in DEFMETHOD) which were previously ignored now signal
2607 * minor incompatible change: the system is now aware of the types of
2608 variables in the COMMON-LISP package, and will signal errors for
2609 most violations of these type constraints (where previously they
2610 were silently accepted).
2611 * minor incompatible change: COMPILE-FILE now uses the freedom
2612 afforded (ANSI 3.2.2.3) to use derived function types for
2613 functions defined in the same file. This also permits the system
2614 to warn on static type mismatches and function
2615 redefinition. (Currently it does not work with high DEBUG level.)
2616 * minor incompatible change: VALUES declaration is disabled.
2617 * When issuing notes, the compiler now signals a condition of type
2618 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2619 restart for use in user handlers. It is expected that the
2620 COMPILER-NOTE condition will eventually become a condition
2621 supertype to a hierarchy of note types, which will then be
2622 handleable in a similar fashion. However, at the moment, no such
2623 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2624 but it's an implementation detail, not a classification for the
2626 * Changes in type checking closed the following bugs:
2627 ** type checking of unused values (192b, 194d, 203);
2628 ** template selection based on unsafe type assertions (192c, 236);
2629 ** type checking in branches (194bc).
2630 * A short form of VALUES type specifier has ANSI meaning (it has
2631 increased the number of situations when SBCL cannot perform type
2633 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2634 keywords or constants is permissible.
2635 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2636 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2637 classes. (thanks to Antonio Martinez)
2638 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2639 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2640 argument to a pretty-print stream. Instead, it leaves any such
2641 operations to DESCRIBE-OBJECT methods.
2642 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2644 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2645 lambda lists. (thanks to David Lichteblau)
2646 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2647 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2648 (thanks to Gerd Moellmann)
2649 * fixed bug 246: increased compilation speed of long
2650 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2652 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2654 * DEFCONSTANT now throws a condition of type
2655 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2656 constant to a non-EQL value; CONTINUE and ABORT restarts
2657 respectively change and preserve the value.
2658 * fixed bug 63: The code walker, part of the implementation of CLOS,
2659 is now better at handling symbol macros.
2660 * bug fix: There is no longer an internal implementation type named
2661 CL:LENGTH. (reported by Raymond Toy)
2662 * bug fix: In macro-like defining macros/special operators the
2663 implicit block does not enclose the lambda list.
2664 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2665 enclosed in parentheses) are not suitable as type specifiers, and
2666 their use properly signals an error now.
2667 * bug fix: An argument count mismatch for a type specifier in code
2668 being compiled no longer causes an unhandled error at compile
2669 time, but signals a compile-time warning.
2670 * fixed simple vector readable printing
2671 * bug fix: DESCRIBE takes more care over whether the class
2672 precedence list slot of a class is bound before accessing it.
2673 (reported by Markus Krummenacker)
2674 * bug fix: FORMATTER can successfully compile pretty-printer format
2675 strings which use variants of the ~* directive inside.
2676 * bug fix: SEARCH now applies its TEST predicate to the elements of
2677 the arguments in the correct order. (thanks to Wolfhard Buss)
2678 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2679 in type inference. (thanks to Robert E. Brown)
2680 * bug fix: Reading in symbols with an explicit package name of ""
2681 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2682 * fixed some bugs revealed by Paul Dietz' test suite:
2683 ** NIL is now allowed as a structure slot name.
2684 ** Arbitrary numbers, not just REALs, are allowed in certain
2685 circumstances in LOOP for-as-arithmetic clauses.
2686 ** Multiple class redefinitions before slot access no longer
2687 causes a type error.
2688 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2689 association between the name and a class.
2690 ** Generic functions with non-standard method-combination and over
2691 five methods all of which return constants no longer return NIL
2692 after the first few invocations. (thanks to Gerd Moellmann)
2693 ** CALL-NEXT-METHOD with no arguments now passes the original
2694 values of the arguments, even in the presence of assignment.
2695 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2697 ** DISASSEMBLE works with closures and funcallable instances.
2698 ** ADD-METHOD now returns the generic function, not the new method.
2699 ** FIND-METHOD signals an error if the lengths of the specializers
2700 is incompatible with the generic function, even if the ERRORP
2702 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2703 which its argument is a member.
2704 ** DEFCLASS only redefines the class named by its class-name
2705 argument if that name is the proper name of the class;
2706 otherwise, it creates a new class.
2707 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2708 of the UNBOUND-SLOT condition to the name of the slot.
2709 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2710 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2711 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2712 SLOT-MAKUNBOUND in the specified fashion.
2714 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2715 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2716 cross-compilation host. As a consequence, we can now bootstrap our
2717 way up to SBCL starting with a bare gcc toolchain and human-readable
2718 source code (first the source to CLISP, then the source to SBCL).
2719 * A contributed module containing a partial implementation of the
2720 simple-streams interface has been included. (thanks to Rudi
2722 * A contributed module implementing the RFC1321 Message Digest
2723 Algorithm, known as MD5, has been included.
2724 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2725 no longer has any effect, as the code controlled by this feature
2726 has been deleted. (As far as we know, no-one has ever built using
2727 this feature, and its semantics were confused in any case).
2728 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2729 work on conditions (as required by the ANSI specification),
2730 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2731 expected behaviour on conditions. Users should note, however,
2732 that such behaviour is not required by the ANSI specification,
2733 and so use of this behaviour may render their code unportable.
2734 * fixed some bugs revealed by Paul Dietz' test suite:
2735 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2737 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2738 ** SXHASH on condition objects no longer returns NIL.
2739 ** :ALLOCATION :CLASS slots are better treated; their values are
2740 updated on class redefinition, and initforms inherited from
2741 superclasses are applied.
2742 ** REMOVE-METHOD returns its generic function argument even when
2743 no method was removed.
2744 ** SHARED-INITIALIZE now initializes the values of the requested
2745 slots, including those with :ALLOCATION :CLASS.
2746 ** ALLOCATE-INSTANCE now works on structure classes defined via
2747 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2749 ** SLOT-EXISTS-P now works on conditions, as well as structures
2751 ** MAKE-LOAD-FORM now has the required methods on
2752 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2753 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2754 keyword, and now implements the SLOT-NAMES argument.
2755 ** methods with &OPTIONAL arguments no longer allow too many
2756 arguments to be passed in the call without error.
2757 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2758 option is consistent with the required arguments of the generic
2759 function lambda list.
2760 * bug fix: REQUIRE accepts a string designator. (Thanks to
2762 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2763 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2764 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2765 * bug fix: The compiler now checks for duplicated variables in macro
2767 * bug fix: SETQ on globals returns the correct value.
2768 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2769 not a COMPILER-ERROR (followed by some other strange error on
2770 choosing the CONTINUE restart).
2771 * bug fix: make.sh and friends are now more consistent in the way that
2772 they look for GNU "make".
2774 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2775 * experimental native threads support (on x86 Linux >=2.4 only).
2776 This is not compiled in by default: you need to add :SB-THREAD to
2777 the target features. See the "Beyond ANSI" chapter of the manual
2779 * fix for longstanding nonANSIism: The old distinction between
2780 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2781 The return value from CL:FIND-CLASS is now a CLOS class, and
2782 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2783 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2784 * An interface to the MetaObject Protocol, as described in Kiczales,
2785 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2786 MIT Press, 1991, is available from the SB-MOP package.
2787 * incompatible change: the SB-PCL package should now be considered
2788 a private implementation detail, and no longer a semi-private MOP
2790 * minor incompatible change: due to rearrangement for threads, the
2791 control stack and binding stack are now allocated at arbitrary
2792 addresses instead of being hardcoded per-port. Users affected by
2793 this probably have to be doing advanced things with shared
2794 libraries, and will know who they are.
2795 * minor incompatible change: Previously, all --eval forms used were
2796 processed with READ before any of them were processed with EVAL.
2797 Now each --eval form is processed with both READ and EVAL before
2798 the next --eval form is processed. (Thus package operations like
2799 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2800 work as the user might reasonably expect.)
2801 * minor incompatible change: *STANDARD-INPUT* is now only an
2802 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2804 * minor incompatible change: Y-OR-N-P is now character-oriented,
2805 not line oriented. Also, YES-OR-NO-P now works without errors.
2806 (thanks to Antonio Martinez)
2807 * sb-aclrepl module improvements: an integrated inspector, added
2808 repl features, and a bug fix to :trace command.
2809 * Known functions, which cannot be open coded by the backend, are
2810 considered to be able to check types of their arguments. (fixing
2811 a bug report by Nathan J. Froyd)
2812 * fixed a bug in computing method discriminating functions: It is
2813 now possible to define methods specialized on classes which have
2814 forward-referenced superclasses. (thanks to Gerd Moellmann)
2815 * fixed evaluation order in optional entries (reported by Gilbert
2817 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2818 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2819 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2820 required-by-AMOP NAME argument, as well as CLASS and
2821 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2822 * fixed bug 20: DEFMETHOD can define methods using names that are
2823 not the proper names of classes to designate class specializers.
2824 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2825 Unix file descriptors, instead of blowing up. (thanks to Antonio
2827 * Garbage collection refactoring: user-visible change is that a
2828 call to the GC function during WITHOUT-GCING will not do garbage
2829 collection until the end of the WITHOUT-GCING. If you were doing
2830 this you were probably losing anyway.
2831 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2832 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2833 TYPEP the latter but not the former.
2834 * The compiler issues a full WARNING for calls to undefined functions
2835 with names from the CL package.
2836 * MAP-INTO for a vector destination is open coded. (reported by
2837 Brian Downing on c.l.l)
2838 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2839 documentation string.
2840 * fixed some bugs revealed by Paul Dietz' test suite:
2841 ** COPY-ALIST now signals an error if its argument is a dotted
2843 ** Condition slots are now accessed more correctly in the presence
2844 of multiple initargs for a given slot.
2845 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2846 exclude restarts of the same name associated with a different
2848 ** DEFCLASS of forward-referenced classes with another
2849 forward-referenced class in the superclasses list no longer
2851 ** Condition slots are now initialized once each, not multiple
2852 times. (thanks to Gerd Moellmann)
2853 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2855 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2856 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2857 arguments contain duplicated elements.
2858 ** RESTART-CASE understands local macros.
2859 ** RESTART-CASE associates exactly its own restarts with a condition.
2860 ** ENDP in safe mode checks its argument to be of type LIST.
2861 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2862 in question is unbound.
2863 ** Optimized MAKE-INSTANCE functions no longer cause internal
2864 assertion failures in the presence of duplicate initargs.
2865 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2866 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2867 propagated even in the ctor optimized implementation of
2869 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2871 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2872 * a better implementation of SXHASH on (simple) bit vectors,
2873 measured both in execution speed and in distribution of results
2874 over the positive fixnums, has been installed. Likewise, a better
2875 implementation of EQUAL for simple bit vectors is now available.
2876 * fixed CEILING optimization for a divisor of form 2^k.
2877 * fixed bug 240 (emitting extra style warnings "using the lexical
2878 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2879 by Antonio Martinez)
2880 * fixed SXHASH, giving different results for NIL depending on type
2881 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2882 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2883 variable. (found by Rolf Wester)
2884 * SBCL does not ignore type declarations for special
2885 variables. (reported by rif on c.l.l 2003-03-05)
2886 * some bug fixes in contrib/sb-aclrepl/
2887 * fixed some bugs revealed by Paul Dietz' test suite:
2888 ** a bug in the CONS type specifier, whereby the CAR and CDR
2889 types got intertwined, has been fixed;
2890 ** the type system is now able to reason about the interaction
2891 between INTEGER and RATIO types more completely;
2892 ** APPEND, [N]REVERSE and NRECONC check that those their
2893 arguments, which must be proper lists, are really so;
2894 ** An array specialized to be unable to hold elements has been
2895 implemented, as required -- yes, really -- by ANSI;
2896 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2897 on malformed property lists;
2899 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2900 * incompatible packaging change: in line with Unix convention,
2901 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2902 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2903 * REQUIRE and PROVIDE are now optionally capable of doing something
2904 useful. See the documentation string for REQUIRE.
2905 * infrastructure for a managed SBCL contrib system: contributed
2906 modules in this release include:
2907 ** the ASDF system definition facility;
2908 ** an interface to the BSD Sockets API;
2909 ** an ACL-like convenience interface to the repl;
2910 (thanks to Kevin Rosenberg)
2911 ** an implementation of ROTATE-BYTE, with efficient implementation
2913 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2914 gives a closer approximation to the right answer than previously.
2915 (thanks to Raymond Toy)
2916 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2917 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2918 optional environment arguments, as required by ANSI.
2919 * fixed bugs in other functions taking environment objects, allowing
2920 calls with an explicit NIL environment argument to be compiled
2922 * fixed bug 228: primary return values from
2923 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2924 COMPILE or FUNCTION.
2925 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2926 :TYPE will no longer signal errors on innocuous objects.
2927 * fixed bug 231b: SETQ is better at respecting type declarations in
2928 the lexical environment.
2929 * fixed a bug in DEFCLASS: classes named by symbols with no or
2930 unprintable packages can now be defined.
2931 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2932 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2933 * fixed compiler failure related to checking types of functions.
2934 (reported by Robert E. Brown)
2935 * the compiler is now much more consistent in its error-checking
2936 treatment of bounding index arguments to sequence functions: in
2937 (SAFETY 3) code, errors will be signalled in almost all cases if
2938 invalid sequence bounding indices are passed to functions defined
2939 by ANSI to operate on sequences.
2940 * fixed a bug in the build procedure: documentation of SBCL-specific
2941 packages is now preserved and available in the final Lisp image.
2942 * lifted FDEFINITION lookup out of loops in the implementation of
2943 many list operations. (thanks to Robert E. Brown)
2944 * fixed a bug in the reader: the #n# reader macro now works for
2945 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2946 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2947 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2948 E. Brown and Tony Martinez respectively)
2949 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2950 SLOT-BOUNDP: in particular, it is now able to optimize them much
2951 better, and is now not vulnerable to having packages renamed.
2952 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2953 always called when a slot is not present in an instance. (thanks
2955 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2956 longer signal an error on unreading a character following EOF on
2957 the previous constituent stream. (thanks to Tony Martinez)
2958 * fixed some bugs revealed by Paul Dietz' test suite:
2959 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2960 not just nonnegative fixnums;
2961 ** the logical bit-array operators such as BIT-AND now accept an
2962 explicit NIL for their "opt-arg" argument (to indicate a
2963 freshly-consed result bit-array);
2964 ** ELT now signals an error on an invalid sequence index in safe
2966 ** the type system is now cleverer about negations of numeric
2967 types, and consequently understands the BIGNUM and RATIO types
2969 ** the type system is now cleverer about the interaction between
2970 INTEGER and RATIO types: while bugs still remain, many more
2971 cases are accurately computed;
2972 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2973 if it is in the last clause;
2974 ** CONSTANTLY now correctly returns a side-effect-free function in
2976 ** DECLARE is no longer treated as a special-operator; in
2977 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2978 * incremented fasl file version number due to the change in the
2979 DEFSTRUCT-SLOT-DESCRIPTION structure.
2981 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2982 * minor incompatible change: code processed by the "interpreter" or
2983 EVAL now has a compilation optimization policy of (DEBUG 2)
2984 (changed from (DEBUG 1)) to improve debuggability of interactive
2985 development, and to allow the use of the debug RETURN command in
2987 * an experimental implementation of the RETURN command for the
2988 debugger has been included. (thanks to Frederik Kuivinen)
2989 * fixed bug 62: constraints were not propagated into a loop.
2990 * fixed bug in embedded calls of SORT (reported and investigated by
2992 * fixed some bugs revealed by Paul Dietz' test suite:
2993 ** printing and reading of arrays with some dimensions having
2994 length 0 (thanks to Gerd Moellmann);
2995 ** BOA constructor with &AUX argument without a default value does
2996 not cause a type error;
2997 ** CONSTANTP now returns true for all self-evaluating objects.
2999 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3000 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3001 accessors that are related by inheritance, as specified in the
3002 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3003 Valtteri Vuorikoski)
3004 * The compiler is now able to inline functions that were defined in
3005 a complex lexical environment (e.g. inside a MACROLET).
3006 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3008 * Support for the upcoming FreeBSD-5.0 release has been included.
3009 (thanks to Dag-Erling Smorgrav)
3010 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3011 effect when it is not in a toplevel context.
3012 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3013 stand a better chance of being correct. (thanks to Gerd
3015 * fixed bug in COERCE, which now signals an error on coercing a
3016 rational to a bounded real type which excludes the expected
3018 * The compiler is now able to derive types more accurately from the
3019 COERCE and COMPILE functions.
3020 * fixed bug 223: functional binding is considered to be constant
3021 only for symbols in the CL package.
3022 * fixed bug 231: SETQ did not check the type of a variable being set
3023 (reported by Robert E. Brown)
3024 * A new optimization for MAKE-INSTANCE has been included, fixing
3025 various bugs (including relating to :ALLOCATION :CLASS slots and
3026 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3028 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3029 ** As required by ANSI, LOOP now disallows anonymous collection
3030 clauses such as COLLECT I in conjunction with aggregate boolean
3031 clauses such as THEREIS (= I 1);
3032 ** LOOP now signals an error when any variable is reused in the
3033 same loop (including the potentially useful construct analogous
3034 to WITH A = 1 WITH A = (1+ A);
3035 ** IT is only a special loop symbol within the first clause of a
3036 conditional loop clause;
3037 ** LOOP with a typed iteration variable over a hashtable now
3038 signals a type error iff it should.
3039 * fixed some other bugs revealed by Paul Dietz' test suite:
3040 ** FILE-STREAM now names the class previously known as FD-STREAM;
3041 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3042 argument) no longer signals an error;
3043 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3044 of the slot symbol, rather than using the current package
3045 ((:CONC-NAME "") continues to intern the slot's name in the
3047 * incremented fasl file version number, because of the incompatible
3048 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3049 of the new implementation of DEFINE-COMPILER-MACRO.
3051 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3052 * Support for building SBCL for MIPS platforms running in
3053 little-endian mode has now been checked in, and basic
3054 functionality on said platforms verified.
3055 * minor incompatible change: PCL now records the pathname of a file
3056 in which methods and the like are defined, rather than its
3058 * minor incompatible change: TRUENAME now considers the truename of
3059 a file naming a directory to be the pathname with :DIRECTORY
3060 component indicating that directory.
3061 * minor incompatible change: a NAMED clause in the extended form of
3062 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3063 reason for the previous behaviour is unclear.
3064 * more systematization and improvement of CLOS and MOP conformance
3065 in PCL (thanks to Gerd Moellman and Pierre Mai):
3066 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3068 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3069 primary methods with no specializers;
3070 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3072 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3073 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3074 FORWARD-REFERENCED-CLASSes; error reporting on
3075 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3077 ** SXHASH on CLOS instances now uses a slot internal to the
3078 instance to return different numbers on distinct instances,
3079 while preserving the same return value through invocations of
3081 ** DEFMETHOD signals errors when methods with longer incongruent
3082 lambda lists are added to generic functions;
3083 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3084 CLASS, as specified in AMOP;
3085 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3086 on the order returned by the primary method for classes of
3087 class STANDARD-CLASS;
3088 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3089 * fixed some bugs shown by Paul Dietz' test suite:
3090 ** DOLIST puts its body in TAGBODY;
3091 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3093 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3094 value producing form;
3095 ** if more variables are given to PROGV than values, extra
3096 variables are bound and made to have no value;
3097 ** NSUBSTITUTE on list arguments gets the right answer with
3099 ** ELT signals an error of type TYPE-ERROR when the index argument
3100 is not a valid sequence index;
3101 ** LOOP signals (at macroexpansion time) an error of type
3102 PROGRAM-ERROR when duplicate variable names are found;
3103 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3104 ** FUNCALL of special-operators now cause an error of type
3106 ** PSETQ now works as required in the presence of side-effecting
3107 symbol-macro places;
3108 ** NCONC accepts any object as its last argument;
3109 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3111 ** loop-for-as-package does not require a package to be explicitely
3113 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3115 * fixed bug 166: compiler preserves "there is a way to go"
3116 invariant when deleting code.
3117 * fixed bug 172: macro lambda lists with required arguments after
3118 &REST arguments now cause an error to be signalled. (thanks to
3120 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3121 bug. (thanks to Matthew Danish)
3122 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3124 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3125 arguments are lexically rebound. (thanks to Gerd Moellmann and
3127 * fixed bug 194: error messages are now more informative when there
3128 is no primary method applicable in a call to a generic
3129 function. (thanks to Gerd Moellmann)
3130 * fixed bug in command line argument checking (thanks to Julian
3132 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3133 (thanks to Matthew Danish)
3134 * incremented fasl file version number, because of the
3135 SXHASH-related changes in the layout of CLOS data structures
3137 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3138 * minor incompatible change: The runtime (the Unix executable named
3139 "sbcl") is now much pickier about the .core files it will load.
3140 Essentially it now requires .core files to descend from the same
3141 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3142 as the runtime does. (The intent is to prevent the crashes which
3143 can occur, and which can even be reported as mysterious failures,
3144 when people patch the sources or change the build parameters
3145 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3146 sbcl and .core files.)
3147 * fixed bug: VALUES-LIST is no longer optimized away.
3148 * fixed bug 142: The FFI conversion of C string values to Lisp
3149 string values no longer conses excessively. (thanks to Nathan
3150 Froyd porting Raymond Toy's fix to CMU CL)
3151 * began to systematize and improve MOP conformance in PCL (thanks to
3152 Nathan Froyd, Gerd Moellman and Pierre Mai):
3153 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3155 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3156 ** FINALIZE-INHERITANCE is now called on class finalization;
3157 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3158 argument precedence order.
3159 * fixed bug 202: The compiler no longer fails on functions whose
3160 derived types contradict their declared type.
3161 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3162 so it can be non-toplevel.
3163 * The fasl file version number has changed (because of the new
3164 implementation of DEFMACRO).
3165 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3166 safe code, that any length requirement by their type-specifier
3167 argument is valid. The exceptions to this are described in bug
3169 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3170 functions now check the types of their inputs as required by ANSI.
3171 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3172 introduced symbol is DECLAREd to be SPECIAL.
3173 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3174 * fixed bug: :COUNT argument to sequence functions may be negative
3175 * fixed bug: body of DO-SYMBOLS may contain declarations
3176 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3177 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3178 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3179 symbol macro only once
3180 * fixed printing of call frame when argument list is unavailable
3181 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3182 * compiler no longer signals WARNING on unknown keyword
3185 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3186 * A beta-quality port to the mips architecture running Linux,
3187 based on the old CMUCL backend, has been made. It has been tested
3188 on a big-endian kernel, and works sufficiently well to be able to
3189 rebuild itself; it has not been tested in little-endian mode.
3190 * fixed an inconsistency between gencgc.c and purify.c which made
3191 dumping/loading .core files unreliable
3192 * fixed bug 120a: The compiler now deals correctly with IFs where
3193 the consequent is the same as the alternative, instead of
3194 misderiving the return type. (thanks to Alexey Dejneka)
3195 * fixed bug 113: Logical pathnames are now dumpable (the logical
3196 host is resolved at load-time, throwing an error if it is not
3198 * fixed bug 174: FORMAT's error message is slightly clearer when a
3199 non-printing character is used in a format directive.
3200 * fixed several bugs in compiler checking of type declarations, i.e.
3201 violations of the Python "declarations are assertions" principle
3202 (thanks to Alexey Dejneka)
3203 * fixed several bugs in PCL's error checking (thanks to Gerd
3205 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3207 * fixed bug in compilation of functions as first class values
3208 (thanks to Antonio Martinez-Shotton)
3209 * The compiler's handling TYPE-ERRORs which it can prove will
3210 inevitably happen at runtime has been cleaned up and corrected
3211 in several ways. (thanks to Alexey Dejneka)
3212 * improved argument type checking for various basic arithmetic
3213 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3214 lavished on them in the past that they can be compiled in many
3215 ways in different special cases
3216 * fixed bug 181: compiler checks validity of user supplied type
3218 * cleaned up code flushing in optimization: Function calls which
3219 should signal errors for safety purposes (e.g. which ANSI says
3220 should signal errors when their arguments are of incorrect type)
3221 are no longer optimized away.
3222 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3223 * incremented fasl file version number, because changes in the
3224 implementation of sequence functions like COERCE caused
3225 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3226 in old inline expansions) to become undefined. (Actually these
3227 changes were later undone, so we might very well be binary
3228 compatible with 0.7.7 after all, but leaving the version number
3229 incremented seemed like the simplest and most conservative
3232 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3233 * An alpha-quality port to the parisc architecture running Linux,
3234 based on the old CMUCL backend, has been made. This, even more so
3235 than the other backends, should be considered still a work in
3236 progress; known problems include that the Linux kernel in 64-bit
3237 mode does not propagate the correct sigcontext structure to
3238 userspace, and consequently SBCL on a parisc64 kernel will not
3240 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3241 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3242 suppressed.) Also now that the compiler is looking at declarations
3243 in the environment, it checks optimization declarations as well,
3244 and suppresses inlining when (> DEBUG SPEED).
3245 * More fixes have been made to treatment of floating point exception
3246 treatment and other Unix signals. In particular, floating point
3247 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3248 * The detection and handling of control stack exhaustion (infinite
3249 or very deeply nested recursion) has changed. Stack exhaustion
3250 detection is now done by write-protecting pages at the OS level
3251 and applies at all optimization settings; when found, a
3252 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3253 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3254 be caught using IGNORE-ERRORS.
3255 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3256 correctly when transforming recursive LABELS functions to LETs.
3257 (thanks to Alexey Dejneka)
3258 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3259 that are names of constants or global variables.
3260 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3261 alien routines with docstrings.
3262 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3263 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3265 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3266 (thanks to Eric Marsden)
3267 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3268 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3269 * Bug fix: The SPARC backend can now compile functions involving
3270 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3271 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3272 to a functions expecting a PATHNAME-DESIGNATOR.
3273 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3274 lambda lists. (thanks to Alexey Dejneka)
3275 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3276 functions so that EXPORTing the name of the class doesn't cause
3277 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3278 to Antonio Martinez for reporting this)
3279 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3280 constant-folded without failing an assertion. (thanks to Einar
3281 Floystad Dorum for reporting this)
3282 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3283 types are now dealt with more correctly by the compiler.
3284 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3285 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3286 behaviour analogous to RENAME-FILE. This puts its behaviour more
3287 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3289 * The fasl file version number has changed again. (because of the
3290 bug fix involving the names of PCL MAKE-INSTANCE functions)
3292 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3293 * bug fix: Floating point exceptions are treated much more
3294 consistently on the x86/Linux and PPC/Linux platforms.
3295 * Array initialization with :INITIAL-ELEMENT is now much faster for
3296 cases when the compiler cannot open code the array creation, but
3297 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3298 array accesses have also seen a speed increase.
3299 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3300 specified. (This was at the root of some bad interactions between
3301 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3303 * bug fix: Internal error arguments for undefined functions are now
3304 computed correctly on the PPC/Linux platform.
3305 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3306 Raymond Toy's patch for CMU CL)
3307 * Support for the Solaris 9 operating environment has been included
3308 (thanks to Daniel Merritt)
3309 * A very ugly but hopefully complete draft of the missing FFI chapter
3310 of the manual has been created by reformatting the corresponding
3311 CMU CL manual chapter into (currently very ugly and incoherent)
3312 DocBook and bringing it up to date for SBCL behavior. Thus, the
3313 manual is now essentially complete, at least by my extreme
3314 once-and-only-once standards, whereby it's acceptable to refer to
3315 the doc strings of SB-EXT functions as the primary documentation.
3316 * The fasl file version number has changed again, due to cleanup of
3317 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3318 is no longer a static symbol.)
3320 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3321 * SBCL now builds with OpenMCL (version 0.12) as the
3322 cross-compilation host; also, more progress has been made toward
3323 bootstrapping under CLISP.
3324 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3326 * bug 158 fixed: The compiler can now deal with integer loop
3327 increments different from 1; fixing this turned out also to fix
3329 * bug 169 fixed: no more bogus warnings about using lexical bindings
3330 despite the presence of perfectly good SPECIAL declarations (thanks
3331 to David Lichteblau)
3332 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3333 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3334 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3336 * bug 180 fixed: Method combination specifications no longer ignore
3337 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3338 * bug fix: Structure type predicate functions now check their argument
3339 count as they should.
3340 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3341 correctly. (thanks to Pierre Mai)
3342 * minor incompatible change: The --noprogrammer option is deprecated
3343 in favor of the new --disable-debugger option, which is very similar.
3344 (The major difference is that it takes effect at a slightly different
3345 time at startup, causing handling of errors in --sysinit and
3346 --userinit files will be affected differently.) The
3347 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3348 been added to allow this functionality to be controlled from ordinary
3349 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3350 maintainers, who might want to run non-interactive scripts to
3351 build SBCL cores which will later be used interactively.)
3352 * minor incompatible change: The LOAD function no longer, when given
3353 a wild pathname to load, loads all files matching that pathname.
3354 Instead, an error of type FILE-ERROR is signalled.
3356 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3357 * bug 147 fixed: The compiler preserves its block link/count
3358 invariants more correctly now so that it doesn't crash. (thanks
3360 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3362 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3363 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3364 no-value-for-this-character as NIL (as specified by ANSI).
3365 * HOST-NAMESTRING on physical pathnames now returns a string that is
3366 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3367 (thanks to Christophe Rhodes)
3368 * The Alpha port handles icache flushing more correctly. (thanks to
3370 * More progress has been made toward bootstrapping under CLISP. (thanks
3371 to Christophe Rhodes)
3372 * The fasl file format has changed again, because dynamic loading
3373 on OpenBSD (which has non-ELF object files) motivated some cleanups
3374 in the way that foreign symbols are transformed and passed around.
3375 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3376 is no longer treated as whitespace by the reader, but instead as
3377 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3378 |A
\7fB|, instead of A as it used to.
3380 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3381 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3382 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3383 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3384 this as of 0.7.1.45, but was left out of the previous news section
3385 (thanks to Dan Barlow)
3386 * SBCL now runs on the Solaris operating system on SPARC architectures
3387 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3388 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3389 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3390 * SPARC backend cleanups, allowing builds of cores optimized for V8
3391 and V9 SPARCS, and also emission of code targeted to a particular
3392 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3394 * SBCL is closer to bootstrapping under CLISP, thanks to various
3395 fixes by Christophe Rhodes.
3396 * The fasl file format has changed again, to allow the compiler's
3397 INFO database to support symbol macros.
3398 * The user manual (in doc/) is formatted into HTML more nicely.
3399 (thanks to coreythomas)
3400 * The system is smarter about SUBTYPEP relationships, especially
3401 those involving NOT types (including types such as ATOM which are
3402 represented internally using NOT types). Thus SUBTYPEP is less
3403 likely to return (VALUES NIL NIL) in general, and in particular
3404 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3406 * The fasl file format has changed again, because the internal
3407 representation of types now includes a new slot to support the new
3408 SUBTYPEP-of-NOT-types logic.
3409 * (not a change in the main branch of SBCL, but a related prototype
3410 which can hopefully be merged into the main branch of SBCL in the
3411 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3412 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3413 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3414 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3415 dispatch macro character combinations. (thanks to Alexey Dejneka)
3416 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3417 that superficially look like logical namestrings correctly.
3418 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3420 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3421 default supplied-p) for &optional and &key arguments. (thanks to
3424 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3425 * incompatible change: The compiler is now less aggressive about
3426 tail call optimization, doing it only when (> SPACE DEBUG) or
3427 (> SPEED DEBUG). (This is an incompatible change because there are
3428 programs which relied on the old CMU-CL-style behavior to optimize
3429 away their unbounded recursion which will now die of stack overflow.)
3430 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3431 for non-GENCGC systems has been increased to 20M (since that
3432 seems much closer to the likely performance optimum for modern
3433 systems than the old 4M value was)
3434 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3435 and *DEBUG-PRINT-LEVEL*
3436 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3437 of CMU CL's support for SPARC, and various endianness and other
3438 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3439 * new syntactic sugar for the Unix command line: --load foo.bar is now
3440 an alternate notation for --eval '(load "foo.bar")'.
3442 ** The system now detects stack overflow and handles it gracefully,
3443 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3444 optimization settings. (This is a good thing in general, and
3445 its introduction in this version should be particularly timely
3446 for anyone whose code fails because of suppression of tail
3448 ** The system now hunts for the C variable "environ" in a more
3449 devious way, to avoid segfaults when the C library version differs
3450 between compile time and run time. (thanks to Christophe Rhodes)
3451 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3452 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3453 ** The compiler no longer issues bogus style warnings for undefined
3454 classes in the same source file as the DEFCLASSes which defined
3455 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3457 ** fixes in CONDITION class precedence list for undefined function
3458 errors (thanks to Alexei Dejneka)
3459 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3460 correctly. (thanks to Dan Barlow)
3461 ** portability fixes aiming at bootstrapping under CLISP (thanks
3462 to Dave McDonald and Christophe Rhodes)
3463 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3464 ** fixes in type translation and and type inference (thanks to
3466 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3467 ** various fixes in the new ports (thanks to Dan Barlow)
3468 * several changes related to debugging:
3469 ** suppression of tail recursion, as noted above
3470 ** stack overflow detection, as noted above
3471 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3472 is now the default. (For some time encapsulation has been more
3473 reliable than the breakpoint-based :ENCAPSULATE NIL
3474 implementation, at least on X86 systems; and I just noticed that
3475 encapsulation also seems closer to the spirit of the ANSI
3478 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3480 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3481 up properly again. (There was a packaging bug in 0.7.0 which
3482 left their definitions in SB-SYS::LOAD-FOREIGN and
3483 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3484 vital for most things which interface to C-level interfaces,
3485 like extensions working with sockets or databases or
3486 Perl-compatible regexes or whatever, and the need to fix
3487 this bug is the main reason that 0.7.1 was released so
3489 ** DEFGENERIC is now choosier about the methods it redefines, so that
3490 reLOADing a previously-LOADed file containing DEFGENERICs does
3491 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3492 cycle now works as it should. (thanks to Alexey Dejneka)
3493 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3494 fixed by Christophe Rhodes. (He actually submitted this patch
3495 months ago, and I delayed until after 0.7.0.)
3496 ** Bug 111 (internal compiler confusion about runtime checks on
3497 FUNCTION types) was fixed by Alexey Dejneka.
3498 * Some internal cleanups (getting rid of variables which aren't
3499 needed now that the byte interpreter is gone) caused the fasl
3500 file format number to change again.
3502 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3503 * major incompatible change: The default fasl file extension, i.e. the
3504 default extension for files produced by COMPILE-FILE, has changed
3505 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3507 ** There are many changes in the implementation of the compiler.
3508 SBCL is now essentially a compiler-only implementation of ANSI
3509 Common Lisp. EVAL still "interprets" a few special cases, but
3510 almost all the interesting cases are handled by creating
3511 a LAMBDA expression, calling COMPILE on it, then calling
3512 FUNCALL on the result.
3513 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3514 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3515 Since the code is newer, there might still be some new bugs
3516 (though not as many as before Martin Atzmueller's fixes:-). But
3517 the new code is substantially simpler and clearer, and hopefully
3518 any remaining bugs will be simpler, less fundamental, and more
3519 fixable then the bugs in the old code.
3520 ** The revised compiler is still a little unsteady on its feet.
3522 *** The debugging information it produces (particularly the names
3523 of FUNCTION objects) is sometimes much less useful than what
3524 the old compiler produced.
3525 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3526 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3527 within a MACROLET) has been temporarily weakened.
3528 ** There are new compiler optimizations for various functions:
3529 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3530 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3531 *** the math functions TRUNCATE, FLOOR, and CEILING
3532 *** the function-of-all-trades COERCE
3533 Mostly these should be transparent, but there's one
3534 potentially-annoying problem (bug 117): when the compiler
3535 inline-expands a function and does type analysis on the result,
3536 it can create control paths which have type mismatches, and
3537 when it can't prove that those control paths aren't taken,
3538 it will issue WARNINGs about the type mismatches. This is
3539 a particular problem in practice for the new sequence functions.
3540 It's not clear how this should be fixed, and for now, a
3541 workaround is given in the entry for 117 in the BUGS file.
3542 ** (Because of the interaction between the two previous items --
3543 occasional inlining problems and new inline expansions -- some
3544 of the new sequence function optimizations won't really kick in
3545 completely until debugging information, and then inlining, are
3546 straightened out in some future version.)
3547 * minor incompatible changes:
3548 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3549 DIRECTORY no longer implicitly promotes NIL slots of its
3550 pathname argument to :WILD. In particular, when you ask for the
3551 contents of a directory (which you used to be able to do without
3552 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3553 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3554 ** changes in behavior that ANSI explicitly defines to be
3555 implementation dependent:
3556 *** The new compiler-only implementation still conforms with ANSI,
3557 but acts a little different than before. Besides the obvious
3558 changes in performance tradeoffs (that the cost per form passed
3559 to EVAL has gone up, and the cost per form executed by EVAL
3560 has gone down), the behavior of the system changes a little
3561 because there are no longer any interpreted function objects.
3562 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3563 e.g. doing COMPILE on the output of interactive DEFUN is
3565 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3567 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3568 has changed from (:CL) to NIL.
3569 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3570 e.g. #\Newline and #\Tab, don't have names specified in the
3571 ANSI Common Lisp standard, is now based on their ASCII symbolic
3572 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3573 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3574 are no longer used for output.
3575 ** changes in internal implementation constants:
3576 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3577 4 million. (If your application spends a lot of time GCing and
3578 you have a lot of RAM, you might want to experiment with
3579 increasing it even more.)
3580 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3581 However, almost all old code should still continue to work without
3582 immediate update, as SB-C-CALL is now a (deprecated) nickname
3584 ** Old operator names in the style DEF-FOO are now deprecated in
3585 favor of new corresponding names DEFINE-FOO, for consistency with
3586 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3587 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3588 internal symbols, but a few supported extensions like
3589 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3590 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3591 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3592 etc. as you get deeper into recursive calls to the debugger
3593 command loop, instead of the old "5]", "5]]", "5]]]"
3594 sequence. (I was motivated to do this when squabbles between
3595 ILISP and SBCL left me very deeply nested in the debugger. In the
3596 short term, this change will probably provoke more ILISP/SBCL
3597 squabbles, but hopefully it will be an improvement in the long run.)
3598 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3599 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3600 function, since declaiming return types involving aliens is
3601 (1) annoyingly messy to do by hand and (2) vital to efficient
3602 compilation of code which calls such functions.
3603 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3604 longer reexported by the SB-EXT package. They're solely useful
3605 for alien code, so it seems more logical that you should get
3606 them from the SB-ALIEN package, not in SB-EXT.
3607 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3608 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3609 features. Instead, the code that they used to control is always
3610 built into the system.
3611 * many other bug fixes
3612 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3613 advantage of the new EVAL-WHEN stuff and to clean them up in
3614 general, and they are now more ANSI-compliant in a number of
3615 ways. Martin Atzmueller is responsible for a lot of this.
3616 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3618 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3619 *** correct ERROR type for various file operations
3620 *** some fixes for Lisp streams
3621 *** DEFMETHOD syntax checking
3622 *** changing old weird representation of debug information as
3623 strings (which, among their other deficiencies, don't transform
3624 correctly when you rename packages, and don't change their
3625 print representation when you change things like *PACKAGE*
3626 and *PRINT-LENGTH*) to symbols and lists of symbols
3627 He also made several improvements and fixed several bugs in DESCRIBE.
3628 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3630 *** misbehavior of WRITE-STRING/WRITE-LINE
3631 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3632 and several other LOOP problems as well
3633 *** DIRECTORY when similar filenames are present
3634 *** DEFGENERIC with :METHOD options
3635 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3636 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3637 *** argument ordering in FIND with :TEST option
3638 *** mishandled package designator argument in APROPOS-LIST
3639 *** various problems in the backquote readmacro
3640 *** a bug in APROPOS
3641 *** probably some others that I'm not describing very well here,
3642 since the CVS log documents them by reference to sbcl-devel
3643 messages, and the SourceForge archives aren't working well.:-(
3644 ** Dan Barlow improved the Alpha port (and is making progress on the
3645 PPC port, for those of you who think different).
3646 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3647 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3648 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3649 continues to work on the SPARC port (for those of you in a position
3650 to look down upon our little PC-compatible boxes from a great height).
3651 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3652 and uses that copy, rather than the current dynamic value, when
3653 it's trying to decide whether to truncate output. Thus e.g.
3654 (let ((*print-lines* 50))
3655 (pprint-logical-block (stream nil)
3657 (let ((*print-lines* 8))
3658 (print (aref possiblybigthings i) stream)))))
3659 should now truncate the logical block only at 50 lines, instead of
3660 often truncating it at 8 lines, as it did before.
3661 * The doc/cmucl/ directory, containing old CMU CL documentation
3662 from the time of the fork, is no longer part of the base system.
3663 SourceForge has shut down its anonymous FTP service, and with it
3664 my original plan for distributing the old CMU CL documentation
3665 there. For now, if you need these files you can download an old
3666 SBCL source release and extract them from it.
3667 * The fasl file version number changed again, for dozens of reasons,
3668 some of which are apparent above.
3670 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3671 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3672 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3673 patch, so that DISASSEMBLE output is much nicer.
3674 * The code in the SB-PROFILE package now seems reasonably stable.
3675 I still haven't decided what the final interface should look like
3676 (I'd like PROFILE to interact cleanly with TRACE, since both
3677 facilities use function encapsulation) but if you have a need
3678 for profiling now, you can probably use it successfully with
3679 the current CMU-CL-style interface.
3680 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3681 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3682 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3683 link now returns the dangling link itself, and for similar
3684 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3685 link itself. (In these cases the old code signalled an error and
3686 looped endlessly, respectively.) Thus, DIRECTORY now works even
3687 in the presence of dangling and cyclic symbolic links.
3688 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3689 is now a supported extension again, since the consensus on
3690 sbcl-devel was that it can be useful for ordinary development
3691 work, not just for debugging SBCL itself.
3692 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3693 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3694 that currently-defined functions might be redefined later with
3695 different return types.
3696 * Hash tables can be printed readably, as inspired by CMU CL code
3697 of Eric Marsden and SBCL code of Martin Atzmueller.
3698 * better error handling in CLOS method combination, thanks to
3699 Martin Atzmueller porting Pierre Mai's CMU CL patches
3700 * more overflow fixes for >16Mbyte I/O buffers
3701 * A bug in READ has been fixed, so that now a single Ctrl-D
3702 character suffices to cause end-of-file on character streams.
3703 In particular, now you only need one Ctrl-D at the command
3704 line (not two) to exit SBCL.
3705 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3707 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3708 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3709 does the right thing.
3710 * The implementation of some type tests, especially for CONDITION
3711 types, is now tidier and maybe faster, due to CMU CL code
3712 originally by Douglas Crosher, ported by Martin Atzmueller.
3713 * Some math functions have been fixed, and there are new
3714 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3715 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3716 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3717 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3718 likely to be built into sbcl-0.7.0.)
3719 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3720 CL, ported to SBCL by Martin Atzmueller)
3721 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3722 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3723 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3724 * There's a new slam.sh hack to shorten the edit/compile/debug
3725 cycle for low-level changes to SBCL itself, and a new
3726 :SB-AFTER-XC-CORE target feature to control the generation of
3727 the after-xc.core file needed by slam.sh.
3728 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3729 COMPILE-FILE is no longer supported, so that now every function
3730 gets an entry point, so that block compilation looks a little
3731 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3732 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3733 returns the number of bytes consed since the system started,
3734 rather than the number consed since the first time the function
3735 was called. (The new definition parallels ANSI functions like
3736 CL:GET-INTERNAL-RUN-TIME.)
3737 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3738 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3739 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3740 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3741 * Fasl file version numbers are now independent of the target CPU,
3742 since historically most system changes which required version
3743 number changes have affected all CPUs equally. Similarly,
3744 the byte fasl file version is now equal to the ordinary
3747 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3748 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3749 is no longer recognized. I apologize for this, because it was
3750 listed in SB-EXT as a supported extension, but I found that
3751 its existing behavior was poorly specified, as well as incorrectly
3752 specified, and it looked like too much of a mess to straighten it
3753 out. I have enough on my hands trying to get ANSI stuff to work..
3754 * many patches ported from CMU CL by Martin Atzmueller, with
3755 half a dozen bug fixes in pretty-printing and the debugger, and
3756 half a dozen others elsewhere
3757 * fixed bug 13: Floating point infinities are now supported again.
3758 They might still be a little bit flaky, but thanks to bug reports
3759 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3760 as flaky as they were.
3761 * The --noprogrammer command line option is now supported. (Its
3762 behavior is slightly different in detail from what the old man
3763 page claimed it would do, but it's still appropriate under the
3764 same circumstances that the man page talks about.)
3765 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3766 are now supported, and enabled by default. Thus, the compiler can
3767 handle many floating point and complex operations much less
3768 inefficiently. (Thus e.g. you can implement a complex FFT
3770 * The compiler now detects type mismatches between DECLAIM FTYPE
3771 and DEFUN better, and implements CHECK-TYPE more correctly, and
3772 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3773 thanks to patches from Martin Atzmueller.
3774 * various fixes to make the cross-compiler more portable to
3775 ANSI-conforming-but-different cross-compilation hosts (notably
3776 Lispworks for Windows, following bug reports from Arthur Lemmens)
3777 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3778 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3779 fixed thanks to Pierre Mai's CMU CL patches.
3780 * fixes to keep the system from overflowing internal counters when
3781 it tries to use i/o buffers larger than 16M bytes
3782 * fixed bug 45a: Various internal functions required to support
3783 complex special functions have been merged from CMU CL sources.
3784 (When I was first setting up SBCL, I misunderstood a compile-time
3785 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3786 * improved support for type intersection and union, fixing bug 12
3787 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3788 more obscure bugs as well
3789 * some steps toward byte-compiling non-performance-critical
3790 parts of the system, courtesy of patches from Martin Atzmueller
3791 * Christophe Rhodes has made some debian packages of sbcl at
3792 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3793 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3794 stable, but are nonetheless usable. When he's ready, I'd be happy
3795 to add them to the SourceForge "File Releases" section. (And if
3796 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3797 * new fasl file format version number (because of changes in
3798 internal representation of (OR ..) types to accommodate the new
3799 support for (AND ..) types, among other things)
3801 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3802 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3804 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3806 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3807 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3808 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3809 * DESCRIBE now works on structure objects again.
3810 * Most function call argument type mismatches are now handled as
3811 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3812 know whether the function will be redefined before the call is
3813 executed. (The compiler could flag local calls with full WARNINGs,
3814 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3815 it doesn't keep track of enough information to know whether calls
3816 are local in this sense.)
3817 * Compiler output is now more verbose, with messages truncated
3818 later than before. (There should be some supported way for users
3819 to override the default verbosity, but I haven't decided how to
3820 provide it yet, so this behavior is still controlled by the internal
3821 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3822 src/compiler/ir1util.lisp.)
3823 * Fasl file format version numbers have increased again, because
3824 support for the Gray streams extension changes the layout of the
3825 system's STREAM objects.
3826 * The Gray subclassable streams extension now works, thanks to a
3827 patch from Martin Atzmueller.
3828 * The full LOAD-FOREIGN extension (not just the primitive
3829 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3830 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3831 but like most other programs, it defaults to copying the Unix
3832 environment from the original process instead of starting the
3833 new process in an empty environment.
3834 * Extensions which manipulate the Unix environment now support
3835 an :ENVIRONMENT keyword option which doesn't smash case or
3836 do other bad things. The CMU-CL-style :ENV option is retained
3837 for porting convenience.
3838 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3839 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3841 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3843 * A patch from Martin Atzmueller seems to have solved the SIGINT
3844 problem, and as far as we know, signal-handling now works cleanly.
3845 (If you find any new bugs, please report them!)
3846 * The system no longer defaults Lisp source file names to types
3847 ".l", ".cl", or ".lsp", but only to ".lisp".
3848 * The compiler no longer uses special default file extensions for
3849 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3850 seems to expect a single default extension for all compiled code,
3851 and there's no compelling reason to try to stretch the standard
3852 to allow two different extensions.) Instead, byte-compiled files
3853 default to the same extension as native-compiled files.
3854 * Fasl file format version numbers have increased again, because
3855 a rearrangement of internal implementation packages made some
3856 dumped symbols in old fasl files unreadable in new cores.
3857 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3858 many fewer weird special cases.
3859 * Bug #17 (differing COMPILE-FILE behavior between logical and
3860 physical pathnames) has been fixed, and some related misbehavior too,
3861 thanks to a patch from Martin Atzmueller.
3862 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3863 by Tim Moore, ported to SBCL by Martin Atzmueller.
3864 * Martin Atzmueller fixed several filesystem-related problems,
3865 including bug #36, in part by porting CMU CL patches, which were
3866 written in part by Paul Werkowski.
3867 * More compiler warnings in src/runtime/ are gone, thanks to
3868 more patches from Martin Atzmueller.
3869 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3872 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3874 * DESCRIBE now works on CONDITION objects.
3875 * The debugger now handles errors which arise when trying to print
3876 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3878 * The build system now uses an additional file, customize-target-features.lisp,
3879 to allow local modifications to the target *FEATURES* list. (The point of
3880 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3881 debugging features enabled, without having to worry about propagating it
3882 into everyone's system when I do a "cvs update".) When no
3883 customize-target-features.lisp file exists, the target *FEATURES* list
3884 should be constructed the same way as before.
3885 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3886 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3887 warn about behavior which is undefined under the ANSI spec. Note: This
3888 is specified by ANSI, but it's not very popular with programmers.
3889 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3890 macro in the SBCL sources for an example of a workaround which you
3891 might use to make portable ANSI-standard code which does what you want.
3892 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3893 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3894 when it's used as a non-toplevel form. (This is required in order
3895 to implement the DEFCONSTANT-EQX macro.)
3896 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3897 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3898 funny things, due to bugs in the implementation of EVAL-WHEN
3899 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3900 non-toplevel DEFCONSTANTs are uncommon.)
3901 * The core file version number and fasl file version number have been
3902 incremented, because the old noncompliant DEFCONSTANT behavior involved
3903 calling functions which no longer exist, and because I also took the
3904 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3905 * fixed bug 1 (error handling before read-eval-print loop starts), and
3906 redid debugger restarts and related debugger commands somewhat while
3908 ** The QUIT debugger command is gone, since it did something
3909 rather different than the SB-EXT:QUIT command, and since it never
3910 worked properly outside the main toplevel read/eval/print loop.
3911 Invoking the new TOPLEVEL restart provides the same functionality.
3912 ** The GO debugger command is also gone, since you can just invoke
3913 the CONTINUE restart directly instead.
3914 ** The TOP debugger command is also gone, since it's redundant with the
3915 FRAME 0 command, and since it interfered with abbreviations for the
3917 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3919 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3920 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3921 some porting work by Martin Atzmueller)
3922 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3923 with a boatload of patches which he ported to SBCL. Now that those
3925 ** The system tries to make sure that its low-priority messages
3926 are prefixed by semicolons, to help people who like to use
3927 syntax highlighting in their ILISP buffer. (This patch
3928 was originally due to Raymond Toy.)
3929 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3930 patches originally written by Raymond Toy.
3931 ** The compiler understands coercion between single-value and
3932 multiple-VALUES type expressions better, getting rid of some very
3933 weird behavior, thanks to patches originally by Robert MacLachlan
3934 and Douglas Crosher.
3935 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3936 lambda lists, thanks to a patch originally by Pierre Mai.
3937 ** The system no longer bogusly warns about "abbreviated type
3939 ** The compiler gets less confused by inlining and RETURN-FROM,
3940 thanks to some patches originally by Tim Moore.
3941 ** The system no longer hangs when dumping circular lists to fasl
3942 files, thanks to a patch originally from Douglas Crosher.
3943 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3944 undefined function error.
3945 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3946 in structure slot initforms) for now, documented workaround instead:-|
3947 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3948 * fixed bug 5: added stubs for various Gray stream functions called
3949 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3950 installed, at least appropriate type errors are generated
3951 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3952 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3953 consistently in DEFMETHOD forms.
3954 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3955 it doesn't seem to affect SBCL after all
3956 * The C runtime system now builds with better optimization and many
3957 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3959 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3961 * The system is now under CVS at SourceForge (instead of the
3962 CVS repository on my home machine).
3963 * The new signal handling code has been tweaked to treat register
3964 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3965 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3966 downstream, e.g. in debug-int.lisp, has implicit dependencies
3967 on the unsignedness of integer representation of machine words,
3968 and that caused the system to bomb out with infinite regress
3969 when trying to recover from type errors involving signed values,
3970 e.g. (BUTLAST '(1 2 3) -1).)
3971 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3972 (This was one of the bugs Peter Van Eynde reported back in July.)
3973 * The system now uses code inspired by Colin Walters' O(N)
3974 implementation of MAP (from the cmucl-imp@cons.org mailing
3975 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3976 inline the MAP operation, and there is more than one
3977 sequence argument to the MAP call (so that it can't just
3978 do ETYPECASE once and for all based on the type of the
3979 single sequence argument). (The old non-inline implementation
3980 of the general M-argument sequence-of-length-N case required
3981 O(M*N*N) time when any of the sequence arguments were LISTs.)
3982 * The QUIT :UNIX-CODE keyword argument has been renamed to
3983 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3984 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3986 * Raymond Wiker's patches to port dynamic loading from Linux to
3987 FreeBSD have been added.
3988 * The BUGS file is now more nearly up to date, thanks in large part
3989 to Martin Atzmueller's review of it.
3990 * The debugger now flushes standard output streams before it begins
3991 its output ("debugger invoked" and so forth).
3992 * The core version number and fasl file version number have both
3993 been incremented, because of incompatible changes in the layout
3995 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3996 used to not be called for a saved Lisp image.)
3997 * Martin Atzmueller's version of a patch to fix a compiler crash,
3998 as posted on sbcl-devel 13 September 2000, has been installed.
3999 * Instead of installing Martin Atzmueller's patch for the
4000 compiler transform for SUBSEQ, I deleted the compiler transform,
4001 and transforms for some similar consing operations.
4002 * A bug in signal handling which kept TRACE from working on OpenBSD
4004 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4005 away by constant folding
4006 * The system now defines its address space constants in one place
4007 (in the Lisp sources), and propagates them automatically elsewhere
4008 (through GENESIS and the sbcl.h file). Therefore, patching the
4009 address map is less unnecessarily tedious and error-prone. The
4010 Lisp names of address space constants have also been systematized.
4011 * CVS tags like dollar-Header-dollar have been removed from
4012 the sources, because they have never saved me trouble and
4013 they've been source of trouble working with patches and other
4014 diff-related operations.
4015 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4016 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4018 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4020 * The system has been ported to OpenBSD.
4021 * The system now compiles with a simple "sh make.sh" on the systems
4022 that it's supported on. I.e., now you no longer need to tweak
4023 text in the target-features.lisp-expr and symlinks in src/runtime/
4024 by hand, the make.sh takes care of it for you.
4025 * The system is no longer so grossly inefficient when compiling code
4026 involving vectors implemented as general (not simple) vectors (VECTOR T),
4027 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4028 which dares to use the various sequence functions on non-simple
4029 vectors, takes less of a performance hit.
4030 * There is now a primitive type predicate VECTOR-T-P
4031 to test for the (VECTOR T) type, so that e.g.
4032 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4033 can now be compiled with some semblance of efficiency. (The old code
4034 turned the type declaration into a full call to %TYPEP at runtime!)
4035 * AREF on (VECTOR T) is still not fast, since it's still compiled
4036 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4037 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4038 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4039 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4040 without making full calls to SUBTYPEP at runtime.
4041 (Some analogous efficiency issues for non-simple vectors specialized to
4042 element types other than T, or for non-simple multidimensional arrays,
4043 have not been addressed. They could almost certainly be handled the
4044 same way if anyone is motivated to do so.)
4045 * The changes in array handling break binary compatibility, so
4046 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4047 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4048 instead of (VALUES T T).
4049 * By following the instructions that Dan Barlow posted to sbcl-devel
4050 on 2 July 2000, I was able to enable primitive dynamic object
4051 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4052 functionality is not implemented (since it calls ld to resolve
4053 library references automatically, requiring RUN-PROGRAM for its
4054 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4055 try to resolve library references) is now supported.
4056 * The system now flushes the standard output streams when it terminates,
4057 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4058 them at several other probably-convenient times, e.g. in each pass of
4059 the toplevel read-eval-print loop, and after evaluating a form given
4060 as an "--eval" command-line option. (These changes were motivated by a
4061 discussion of stream flushing issues on cmucl-imp in August 2000.)
4062 * The source transform for TYPEP of array types no longer assumes
4063 that an array whose element type is a not-yet-defined type
4064 is implemented as an array of T, but instead punts, so that the
4065 type will be interpreted at runtime.
4066 * There is now some support for cross-compiling in make.sh: each of
4067 the phases of make.sh has its own script. (This should be transparent
4068 to people doing ordinary, non-cross-compile builds.)
4069 * Since my laptop doesn't have hundreds of megabytes of memory like
4070 my desktop machine, I became more motivated to do some items on
4071 my to-do list in order to reduce the size of the system a little:
4072 ** Arrange for various needed-only-at-cold-init things to be
4073 uninterned after cold init. To support this, those things have
4074 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4075 symbols with such names are now uninterned after cold init).
4076 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4077 fasl files for cold load.
4078 ** Remove the old compiler structure pooling code (which used to
4079 be conditional on the target feature :SB-ALLOC) completely.
4080 ** Redo the representation of some data in cold init to be more compact.
4081 (I also looked into supporting byte compiled code at bootstrap time,
4082 which would probably reduce the size of the system a lot, but that
4083 looked too complicated, so I punted for now.)
4084 * The maximum signal nesting depth in the src/runtime/ support code has
4085 been reduced from 4096 to 256. (I don't know any reason for the very
4086 large old value. If the new smaller value turns out to break something,
4087 I'll probably just bump it back up.)
4088 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4090 * Many, many bugs reported by Peter Van Eynde have been added to
4091 the BUGS list; some have even been fixed.
4092 * While enabling dynamic object file loading, I tried to make the
4093 code easier to understand, renaming various functions and variables
4094 with less ambiguous names, and changing some function calling
4095 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4096 * While trying to figure out how to do the OpenBSD port, I tried to
4097 clean up some of the code in src/runtime/. In particular, I dropped
4098 support for non-POSIX signal handling, added various comments,
4099 tweaked the code to reduce the number of compilation warnings, and
4100 renamed some files to increase consistency.
4101 * To support the new automatic configuration functionality in make.sh,
4102 the source file target-features.lisp-expr has been replaced with the
4103 source file base-target-features.lisp-expr and the machine-generated
4104 file local-target-features.lisp-expr.
4105 * fixed a stupid quoting error in make.sh so that using CMU CL
4106 "lisp -batch" as cross-compilation host works again
4108 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4110 * DESCRIBE no longer tries to call itself recursively to describe
4111 bound/fbound values, so that it no longer fails on symbols which are
4112 bound to themselves (like keywords, T, and NIL).
4113 * DESCRIBE now works on generic functions.
4114 * The printer now prints less-screwed-up representations of closures
4115 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4116 * A private symbol is used instead of the :EMPTY keyword previously
4117 used to mark empty slots in hash tables. Thus
4118 (DEFVAR *HT* (MAKE-HASH-TABLE))
4119 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4120 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4121 now does what ANSI says that it should. (You can still get
4122 similar noncompliant behavior if bang on the hash table
4123 implementation with all the symbols you get back from
4124 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4125 This breaks binary compatibility, since tests for equality to
4126 :EMPTY are wired into things like the macroexpansion of
4127 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4129 * There's now a minimal placeholder implementation for CL:STEP,
4130 as required by ANSI.
4131 * An obscure bug in the interaction of the normal compiler, the byte
4132 compiler, inlining, and structure predicates has been patched
4133 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4134 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4136 * Missing ordinary arguments in a macro call are now detected even
4137 when the macro lambda list contains &KEY or &REST.
4138 * The debugger no longer complains about encountering the top of the
4139 stack when you type "FRAME 0" to explicitly instruct it to go to
4140 the top of the stack. And it now prints the frame you request even
4141 if it's the current frame (instead of saying "You are here.").
4142 * As specified by ANSI, the system now always prints keywords
4143 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4145 * The default initial SIZE of HASH-TABLEs is now smaller.
4146 * Type information from CLOS class dispatch is now propagated
4147 into DEFMETHOD bodies, so that e.g.
4148 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4150 is now basically equivalent to
4151 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4152 (DECLARE (TYPE SINGLE-FLOAT X))
4154 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4155 operation, without having to do run-time type dispatch.
4156 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4157 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4158 * Since I don't seem to be making big file reorganizations very often
4159 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4160 is overflowing my ability to conveniently back them up), I've finally
4161 checked the system into CVS. (The CVS repository is on my home system,
4162 not at SourceForge -- putting it on SourceForge might come later.)
4163 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4164 high-level GC-NOTIFY-FOO functions send their output. (There's
4165 still very little control of where low-level verbose GC functions
4166 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4167 less than it used to -- the GC-NOTIFY-FOO functions are now under
4168 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4169 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4170 in only one place in the source code, and propagates it automatically
4171 everywhere that it's needed. Thus e.g. when I bump the version from
4172 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4173 * The C source files now include boilerplate legalese and documentation
4174 at the head of each file (just as the Lisp source files already did).
4175 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4176 to his page will be replaced with a link to his new CLiki service.
4178 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4180 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4181 * The build process now looks for GNU make under the default name "gmake",
4182 instead of "make" as it used to. If GNU make is not available as "gmake"
4183 on your system, you can change this default behavior by setting the
4184 GNUMAKE environment variable.
4185 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4186 can build without error under CMU CL.
4188 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4190 * There is now a partial SBCL user manual (with some new text and some
4191 text cribbed from the CMU CL manual).
4192 * The beginnings of a profiler have been added (starting with the
4193 CMU CL profiler and simplifying and cleaning up). Eventually the
4194 main interface should be through the TRACE macro, but for now,
4195 it's still accessed through vaguely CMU-CL-style functions and macros
4196 exported from the package SB-PROFILE.
4197 * Some problems left over from porting CMU CL to the new
4198 cross-compilation bootstrap process have been cleaned up:
4199 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4200 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4201 part when getting rid of the compiler *BACKEND* stuff.)
4202 ** The value of *NULL-TYPE* was screwed up, because it was
4203 being initialized before the type system knew the final
4204 definition of the 'NULL type. This screwed up several key
4205 optimizations in the compiler, causing inefficiency in all sorts
4206 of places. (I found it because I wanted to understand why
4207 GET-INTERNAL-RUN-TIME was consing.)
4208 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4209 PROCLAIM FTYPE information. Unfortunately this broke binary
4210 compatibility again, since now the forms output by DEFGENERIC
4211 to refer to functions which didn't exist in 0.6.3.
4212 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4213 can use the new (as of 0.6.3) transform for SOME into MAP into
4215 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4216 values to (INTEGER 0 1000000), so that the time code will no longer
4217 occasionally get blown up by Linux returning 1000000 microseconds
4218 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4219 its output conform to the ANSI spec. (Alas, this makes its output
4220 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4221 * A full call to MAP NIL with a single sequence argument no longer conses.
4222 * fixes to problems pointed out by Martin Atzmueller:
4223 * The manual page no longer talks about multiprocessing as though
4224 it were currently supported.
4225 * The ILISP support patches have been removed from the distribution,
4226 because as of version 5.10.1, ILISP now supports SBCL without us
4227 having to maintain patches.
4228 * added a modified version of Raymond Toy's recent CMU CL patch for
4229 EQUALP comparison of HASH-TABLE
4231 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4233 * The system still can't cross-compile itself with
4234 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4235 entails), but at least it can compile more of itself that way
4236 than it used to be able to, and various buglets which were uncovered
4237 by trying to cross-compile itself that way have now been fixed.
4238 * This release breaks binary compatibility again. This time
4239 at least I've incremented the FASL file format version to 2, so that the
4240 problem can be detected reliably instead of just causing weird errors.
4241 * various new style warnings:
4242 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4243 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4244 ** using the lexical binding of a variable named in the *FOO* style
4245 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4246 as specified by ANSI.
4247 * *RANDOM-STATE* is no longer automatically initialized from
4248 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4249 default behavior of the system is to repeat its behavior every time
4250 it's run. If you'd like to change this behavior, you can always
4251 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4252 old convention there was no comparably easy way to get the system to
4253 repeat its behavior every time it was run.
4254 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4255 FTYPE declarations has been removed, in favor of their ANSI
4256 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4257 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4258 the types of their sequence arguments can be determined at compile time.
4259 This is done through a new open code expansion for MAP which eliminates
4260 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4261 argument types can be determined at compile time.
4262 * The optimizer now transforms COERCE into an identity operation when it
4263 can prove that the coerced object is already of the correct type. (This
4264 can be a win for machine generated code, including the output of other
4265 optimization transforms, such as the MAP transform above.)
4266 * Credit information has been moved from source file headers into CREDITS.
4267 * Source file headers have been made more standard.
4268 * The CASE macro now compiles without complaining even when it has
4271 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4273 * (Note that the way that the PCL macroexpansions were rewritten
4274 to accommodate the change in DEFGENERIC below breaks binary
4275 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4276 not run under sbcl-0.6.2. Once we get out of alpha releases,
4277 i.e. hit release 1.0.0, we'll probably try to maintain binary
4278 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4279 and sbcl-1.4.4. Until then, however, it might be fairly common
4280 for maintenance releases to break binary compatibility.)
4281 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4283 * The reporting of unhandled signals has been changed to print some
4284 explanatory text as well as the report form. (Previously only
4285 the report form was printed.)
4286 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4287 it defines, so that the compiler no longer issues undefined function
4288 warnings for compiled-but-not-yet-loaded generic functions.
4289 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4290 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4291 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4292 section of the ANSI spec are supported.
4293 * The "" nickname for the "KEYWORD" package has been removed.
4294 The reader still handles symbol tokens which begin with a package marker
4295 as keywords, but it doesn't expose its mechanism for doing so in the
4296 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4297 * The system now issues STYLE-WARNINGs for contradictory TYPE
4298 proclamations. (Warnings for contradictory FTYPE proclamations would
4299 be nice too, but those can't be done usefully unless the type system
4300 is made smarter about FUNCTION types.)
4301 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4302 systematized, so that "*target-*.lisp is supposed to exist only on the
4303 target and imply that there's a related file which exists on the
4304 host, and *host-*.lisp is supposed to exist only on the host and imply
4305 that there's a related file which exists on the target. This involves a
4306 lot of renaming. Hopefully the acute confusion caused by the renaming
4307 will be justified by the reduction in chronic confusion..
4308 ** runtime-type.lisp -> early-target-type.lisp
4309 ** target-type.lisp -> late-target-type.lisp
4310 ** early-host-format.lisp -> early-format.lisp
4311 ** late-host-format.lisp -> late-format.lisp
4312 ** host-error.lisp -> misc-error.lisp
4313 ** early-error.lisp -> early-target-error.lisp
4314 ** late-error.lisp -> late-target-error.lisp
4315 ** host-defboot.lisp -> early-defboot.lisp
4316 ** code/misc.lisp -> code/target-misc.lisp
4317 ** code/host-misc.lisp -> code/misc.lisp
4318 ** code/numbers.lisp -> code/target-numbers.lisp
4319 ** code/early-numbers.lisp -> numbers.lisp
4320 ** early-host-type.lisp -> early-type.lisp
4321 ** late-host-type.lisp -> late-type.lisp
4322 ** host-typep.lisp -> typep.lisp
4323 ** load.lisp -> target-load.lisp
4324 ** host-load.lisp -> load.lisp
4325 ** host-disassem.lisp -> disassem.lisp
4326 ** host-insts.lisp -> insts.lisp
4327 ** byte-comp.lisp -> target-byte-comp.lisp
4328 ** host-byte-comp.lisp -> byte-comp.lisp
4329 ** host-signal.lisp -> signal.lisp
4330 ** host-defstruct.lisp -> defstruct.lisp
4331 ** late-target-type.lisp -> deftypes-for-target.lisp
4332 Furthermore, several other previously target-only files foo.lisp (e.g.
4333 hash-table.lisp and random.lisp) have been split into a target-and-host
4334 foo.lisp file and a target-only target-foo.lisp file, with their key type
4335 definitions in the target-and-host part, so that the cross-compiler will
4336 know more about target types.
4337 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4338 gone away. In their place are various *BACKEND-FOO* variables
4339 corresponding to the slots of the old structure.
4340 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4341 into the target SBCL has been fixed.
4342 * The chill.lisp system for loading cold code into a running SBCL
4344 * Support for the CMU CL "scavenger hook" extension has been removed.
4345 (It was undocumented and unused in the CMU CL sources that SBCL was
4346 derived from, and stale in sbcl-0.6.1.)
4347 * Various errors in the cross-compiler type system were detected
4348 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4349 (enabling various consistency checks). Many of them were fixed,
4350 but some hard problems remain, so the compiler is back to
4351 running without *TYPE-SYSTEM-INITIALIZED* for now.
4352 * As part of the cross-compiler type system cleanup, I implemented
4353 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4354 * I have started adding UNCROSS calls throughout the type system
4355 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4356 on cross-compiler input files will be able to go away, and various
4358 * CONSTANTP now returns true for quoted forms (as explicitly required
4361 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4363 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4364 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4365 (MAKE-LIST -1). In the longer term, it ought to become true
4366 that declarations are assertions even at SAFETY 1. For now, it's not
4367 quite true even at SAFETY 3, but it's at least more nearly true..
4368 (Note that this change seems to increases the size of the system by
4369 O(5%) and to decrease the speed of the compiler by 20% or more.)
4370 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4371 for the problem of printing dozens of lines of distracting information
4372 about low-level system machinery as part of the top stack frame
4373 on entry to the debugger when an undefined function was called.
4374 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4375 is not reset to COMMON-LISP-USER.
4376 * Compilation of stuff related to dyncount.lisp has been made conditional
4377 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4378 smaller. The various dyncount-related symbols have been moved into
4379 a new "SB-DYNCOUNT" package.
4380 * tty-inspect.lisp has been renamed to inspect.lisp.
4381 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4382 feature has gone away. (When we eventually port to other flavors of
4383 libc and/or Unix, we'll try to make the differences between flavors
4384 invisible at the user level.)
4385 * Various other *FEATURES* tags, and/or their associated conditionals,
4386 have been removed if obsolescent, or given better documentation, or
4387 sometimes given more-mnemonic names.
4389 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4391 * tidied up "make.sh" script
4392 * tidied up system directory structure
4393 * better "clean.sh" behavior
4394 * added doc/FOR-CMUCL-DEVELOPERS
4395 * many many small tweaks to output format, e.g. removing possibly-confusing
4396 trailing #\. character in DESCRIBE-INSTANCE
4397 * (EQUALP #\A 'A) no longer signals an error.
4398 * new hashing code, including EQUALP hashing
4399 * tidied up Lisp initialization and toplevel
4400 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4401 * command line argument processing
4402 * added POSIX-GETENV function to deal with Unix-ish environment variables
4403 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4404 terminating SBCL on EOF
4405 * non-verbose GC by default
4406 * There is no more "sbcl" shell script; the sbcl file is now the C
4407 runtime executable (just like CMU CL).
4408 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4410 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4411 symbol and package information as Lisp native symbol and package objects
4412 instead of strings naming symbols and strings naming packages. This way,
4413 whenever packages are renamed (as in warm init), debug information is
4414 transformed along with everything else.
4415 * tweaked the optimization policy declarations which control the building
4416 of SBCL itself. Now, among other things, the system no longer saves
4417 source location debugging information. (This helps two problems at once
4418 by reducing SBCL size and by keeping SBCL from trying to look for its
4419 sources -- which may not exist -- when reporting errors.)
4420 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4421 debugging and testing purposes
4422 * cleaned up printing, making the printer call PRINT-OBJECT for
4423 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4424 methods, giving nearly-ANSI behavior
4425 * converted almost all special variables to use *FOO* naming convention
4426 * deleted PARSE-TIME functionality, since it can be done portably
4427 * moved some files out of cold init into warm init
4428 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4430 * regularized formatting of source files
4431 * added an install.sh script
4432 * fixed ridiculous memory usage of cross-compiler by making
4433 compiler/alloc.lisp not try to do pooling unless it can hook
4434 itself into the GC of the cross-compilation host. Now the system
4435 builds nicely on my old laptop.
4436 * added :SB-ALLOC in target-features.lisp-expr
4437 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4438 was not implemented)
4439 * re-did condition handling and note reporting in the compiler. Notes
4440 are no longer handled by signalling conditions. Style warnings
4441 and warnings are handled more correctly and reported in such a way
4442 that it's easy to find one or the other in your output (so that you
4443 can e.g. figure out which of many problems caused COMPILE-FILE to
4445 * changed the severity of several compiler warnings from full WARNING
4446 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4447 compiler note reporting so that it doesn't use the condition system
4448 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4449 COMPILE-FILE command)
4450 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4451 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4452 no longer supported, since their implementation was deeply intertwingled
4453 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4454 * removed bogus "support" for compiler macros named (SETF FOO), and
4455 removed the compiler macro for SETF INFO (but only after making a fool
4456 of myself on the cmucl-imp mailing list by posting a bogus patch for
4457 DEFINE-COMPILER-MACRO..)
4458 * Compiled files containing forms which have side effects on the Lisp
4459 reader (such as DEFPACKAGE forms) are now handled more correctly.
4460 (Compiler queuing of top level lambdas has been suppressed by setting
4461 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4462 * deleted various currently-unused source files, e.g. gengc.lisp. They
4463 may be added back at some point e.g. when porting to other architectures,
4464 but until they are it's distracting to distribute them and to try to
4466 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4467 there were so many of them they're just distractions, and UNCROSS is
4468 known to be able to handle the current sources
4469 * moved PROFILE functionality into TRACE, so that it will be clear
4470 how the wrapping and unwrapping of functions when you profile them
4471 interacts with the wrapping and unwrapping of functions when you
4472 trace them. (Actually, the functionality isn't there yet, but at least
4473 the interface specification is there. Hopefully, the functionality will
4474 arrive with some future maintenance release.)
4475 * removed host-oops.lisp
4476 * changed signature of QUIT function to allow UNIX-CODE argument
4477 * fixed READ-SEQUENCE bug
4478 * tweaked verbose GC output so that it looks more like the progress
4479 output that ANSI specifies for functions like LOAD
4480 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4481 * added <http://sbcl.sourceforge.com> to the banner information printed by