-changes in sbcl-0.6.0 relative to sbcl-0.5.0:
+changes in sbcl-0.8.13 relative to sbcl-0.8.12:
+ * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
+ the manual for details; for now, package locks can be disabled by
+ removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
+ if no major problems are found then it is likely that they will be
+ compiled in unconditionally.
+ * minor incompatible change: as threatened around sbcl-0.8.0, the
+ home package of MOP-related symbols is now SB-MOP, not SB-PCL.
+ The symbols are also exported from SB-PCL for backwards
+ compatibility, but more so than before SB-PCL should be treated as
+ an implementation-internal package.
+ * the SB-SPROF contrib now works on (most) non-x86 architectures.
+ It is known as of this release not to work on the Alpha, however.
+ * fixed bug #167: errors signalled due to illegal syntax in method
+ bodies are now more legible.
+ * fixed bug #338: instances of EQL-SPECIFIER are now valid type
+ designators and can hence be used with TYPEP.
+ * fixed bug #333: CHECK-TYPE now ensures that the type error
+ signalled, if any, has the right object to be accessed by
+ TYPE-ERROR-DATUM. (reported by Tony Martinez)
+ * fixed bug #340: SETF of VALUES obeys the specification in ANSI
+ 5.1.2.3 for multiple-value place subforms. (reported by Kalle
+ Olavi Niemetalo)
+ * fixed bug #334: programmatic addition of slots using specialized
+ methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
+ and :ALLOCATION :CLASS slots.
+ * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
+ float exponents. (rereported by Peter Seibel)
+ * fixed a bug: #\Space (and other whitespace characters) are no
+ longer considered to be macro characters in standard syntax by
+ GET-MACRO-CHARACTER.
+ * fixed bug: initialization of condition class metaobjects no longer
+ causes an instance of the condition to be created. (reported by
+ Marco Baringer)
+ * fixed bug: it is now possible to have slots such that
+ SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
+ description is neither :INSTANCE nor :CLASS.
+ * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
+ user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
+ SLOT-VALUE-USING-CLASS), and no longer causes errors with
+ non-standard SLOT-DEFINITION-ALLOCATION values.
+ * optimization: improved performance of BIT and SBIT on bit-vectors.
-* tidied up "make.sh" script
-* tidied up system directory structure
-* better "clean.sh" behavior
-* added doc/FOR-CMUCL-DEVELOPERS
-* many many small tweaks to output format, e.g. removing possibly-confusing
- trailing #\. character in DESCRIBE-INSTANCE
-* (EQUALP #\A 'A) no longer signals an error.
-* new hashing code, including EQUALP hashing
-* tidied up Lisp initialization and toplevel
-* initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
-* command line argument processing
-* added POSIX-GETENV function to deal with Unix-ish environment variables
-* more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
- terminating SBCL on EOF
-* non-verbose GC by default
-* There is no more "sbcl" shell script; the sbcl file is now the C
- runtime executable (just like CMU CL).
-* removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
- FOP-POP-FOR-EFFECT
-* tweaked debug-info.lisp and debug-int.lisp to make the debugger store
- symbol and package information as Lisp native symbol and package objects
- instead of strings naming symbols and strings naming packages. This way,
- whenever packages are renamed (as in warm init), debug information is
- transformed along with everything else.
-* tweaked the optimization policy declarations which control the building
- of SBCL itself. Now, among other things, the system no longer saves
- source location debugging information. (This helps two problems at once
- by reducing SBCL size and by keeping SBCL from trying to look for its
- sources -- which may not exist -- when reporting errors.)
-* added src/cold/chill.lisp, to let SBCL read its own cold sources for
- debugging and testing purposes
-* cleaned up printing, making the printer call PRINT-OBJECT for
- instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
- methods, giving nearly-ANSI behavior
-* converted almost all special variables to use *FOO* naming convention
-* deleted PARSE-TIME functionality, since it can be done portably
-* moved some files out of cold init into warm init
-* deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
- with (VALUES) forms
-* regularized formatting of source files
-* added an install.sh script
-* fixed ridiculous memory usage of cross-compiler by making
- compiler/alloc.lisp not try to do pooling unless it can hook
- itself into the GC of the cross-compilation host. Now the system
- builds nicely on my old laptop.
-* added :SB-ALLOC in target-features.lisp-expr
-* deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
- was not implemented)
-* re-did condition handling and note reporting in the compiler. Notes
- are no longer handled by signalling conditions. Style warnings
- and warnings are handled more correctly and reported in such a way
- that it's easy to find one or the other in your output (so that you
- can e.g. figure out which of many problems caused COMPILE-FILE to
- return FAILURE-P).
-* changed the severity of several compiler warnings from full WARNING
- to STYLE-WARNING in order to conform with the ANSI spec; also changed
- compiler note reporting so that it doesn't use the condition system
- at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
- COMPILE-FILE command)
-* made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
- function. As a consequence, START-BLOCK and END-BLOCK declarations are
- no longer supported, since their implementation was deeply intertwingled
- with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
-* removed bogus "support" for compiler macros named (SETF FOO), and
- removed the compiler macro for SETF INFO (but only after making a fool
- of myself on the cmucl-imp mailing list by posting a bogus patch for
- DEFINE-COMPILER-MACRO..)
-* Compiled files containing forms which have side effects on the Lisp
- reader (such as DEFPACKAGE forms) are now handled more correctly.
- (Compiler queuing of top level lambdas has been suppressed by setting
- *TOP-LEVEL-LAMBDA-MAX* to 0. )
-* deleted various currently-unused source files, e.g. gengc.lisp. They
- may be added back at some point e.g. when porting to other architectures,
- but until they are it's distracting to distribute them and to try to
- maintain them.
-* deleted "UNCROSS couldn't recurse through.." style warnings, since
- there were so many of them they're just distractions, and UNCROSS is
- known to be able to handle the current sources
-* moved PROFILE functionality into TRACE, so that it will be clear
- how the wrapping and unwrapping of functions when you profile them
- interacts with the wrapping and unwrapping of functions when you
- trace them. (Actually, the functionality isn't there yet, but at least
- the interface specification is there. Hopefully, the functionality will
- arrive with some future maintenance release.)
-* removed host-oops.lisp
-* changed signature of QUIT function to allow UNIX-CODE argument
-* fixed READ-SEQUENCE bug
-* tweaked verbose GC output so that it looks more like the progress
- output that ANSI specifies for functions like LOAD
-* set up the system on sourceforge.com, with home pages, mailing lists, etc.
-* added <http://sbcl.sourceforge.com> to the banner information printed by
- the sbcl executable
+changes in sbcl-0.8.12 relative to sbcl-0.8.11:
+ * minor incompatible change: the system no longer provides
+ optimization hints (conditions which are TYPEP
+ SB-EXT:COMPILER-NOTE) for conforming code in default compilation
+ mode; these hints are still emitted when higher SPEED optimization
+ is requested.
+ * new contrib module: a sampling profiler (profiling by statistical
+ sampling, rather than by instrumenting functions) is available as
+ the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
+ * the behaviour of the standard function ED is now customizeable by
+ third parties through a hook variable: see ED's documentation
+ string for information on the protocol.
+ * the compiler no longer emits efficiency notes for (FUNCALL X)
+ when the type of X is uncertain under default optimization
+ settings.
+ * fixed bug 276: mutating a binding of a specialized parameter to a
+ method to something that is not TYPEP the specializer is now
+ possible.
+ * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
+ exhibit the required behaviour on the x86 platform. (thanks to
+ Peter van Eynde, Eric Marsden and Bruno Haible)
+ * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
+ even for difficult arguments. (reported by Peter Graves)
+ * fixed bug 141a: the backquote printer now descends quoted
+ structure.
+ * fixed another bug in backquote printing: no more destructive
+ modification of the form's list structure. (reported by Brian
+ Downing)
+ * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
+ move between its address being taken and the call to
+ interrupt_thread, fixing a crashing race condition.
+ * the SB-POSIX contrib implementation has been adjusted so that it
+ no longer exhibits ridiculously poor performance when constructing
+ instances corresponding to C structs.
-changes in sbcl-0.6.1 relative to sbcl-0.6.0:
+changes in sbcl-0.8.11 relative to sbcl-0.8.10:
+ * minor incompatible change: the sb-grovel contrib now treats C
+ structures as alien (in the sense of SB-ALIEN) objects rather than
+ as undistinguished (simple-array (unsigned-byte 8) (*))s. This
+ has implications for memory management of client code
+ (sb-grovel-returned objects must now be manually managed) and for
+ type safety (alien objects now have full types).
+ * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
+ used to control emission of compiler diagnostics, rather than the
+ SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
+ documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
+ quality should be considered deprecated.
+ * install.sh now installs the user manual as well
+ * (not quite a new documentable feature, but worth considering in
+ the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
+ beginnings of a semantically meaningful condition hierarchy is
+ under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
+ IDEs.
+ * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
+ designator as the defaults argument.
+ * fixed bug: Displaced arrays whose displaced-to array has become
+ too small now cause ARRAY-DIMENSION to signal an error, providing
+ for safer bounds-checking. (reported by Bruno Haible)
+ * fixed bug: DEFCLASS slot definitions with identical :READER and
+ :WRITER names now signal a reasonable error. (reported by Thomas
+ Burdick)
+ * fixed bug: CLOSE :ABORT T on appending stream no longer causes
+ file deletion.
+ * fixed bug: Invalid slot specification errors now print correctly.
+ (thanks to Zach Beane)
+ * fixed bug 320: Shared to local slot value transfers in class
+ redefinitions now happen corrently from superclasses as
+ well. (reported by Bruno Haible)
+ * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
+ Haible)
+ * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
+ improper lists correctly. (reported by Bruno Haible)
+ * fixed bug 313: source-transform for <fun-name> was erroneously
+ applied to a call of a value of a variable with name <fun-name>.
+ (reported by Antonio Menezes Leitao)
+ * fixed bug 307: The obsolete instance protocol ensures that
+ subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
+ * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
+ remove dead unknown-values globs from the middle of the stack.
+ * added a new restart to *BREAK-ON-SIGNALS* handling to make it
+ easier to resume long computations after using *BREAK-ON-SIGNALS*
+ to diagnose and fix failures. (thanks to Nikodemus Siivola)
+ * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
+ CLISP test suite): WRITE-TO-STRING is not constant-foldable.
+ * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
+ is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
+ MEMBER and UNION types have likewise been fixed. (thanks to Bruno
+ Haible)
+ * fixed a (fairly theoretical) bug in string printing: if
+ *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
+ does not have array-element-type equal to the most general string
+ type.
+ * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
+ function name. (thanks to Nikodemus Siivola)
+ * fixed bug: compile-time format string checker failed on
+ non-closed ~{. (reported by Thomas F Burdick)
+ * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
+ don't warn on legal loop code involving more than one aggregate
+ boolean. (thanks to Nikodemus Siivola)
+ * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
+ in keyword position to MAKE-PACKAGE was not being reported as
+ invalid.
+ * fixed bug: as reported by Juan Ripoll on cmucl-imp,
+ MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
+ keywords.
+ * fixed bugs 280 and 312: the checking for multiple definitions in a
+ file is less likely to become confused by uses of inline
+ functions.
+ * fixed bug: the #S reader macro performs the keyword coercion
+ specified for slot names. (reported by Kalle Niemitalo)
+ * fixed bug: lambda lists may contain symbols whose names start with
+ & but are not lambda-list-keywords; their occurrence triggers a
+ STYLE-WARNING.
+ * fixed bug 321: define-method-combination argument lambda lists do
+ not cause invalid code to be generated when &optional or &aux
+ variables have default values. (reported by Bruno Haible)
+ * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
+ have CLOS classes; this appears also to have fixed reported
+ instability in stack exhaustion detection.
+ * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
+ MUFFLE-WARNING when no associated restart is present is now
+ printable.
+ * optimization: rearranged the expansion of various defining macros
+ so that each expands into only one top-level form in a
+ :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
+ approximately 10%.
+ * optimization: used a previously little-used slot in symbols to
+ cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
+ to Juho Snellman)
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
+ a symbol.
+ ** Fixed an optimization bug related to inheritance of initforms
+ from local to shared slots.
+ ** FILE-POSITION works as specified on BROADCAST-STREAMs.
+ ** CAST optimizer forgot to flush argument derived type.
+ ** print/read consistency on floats is now orders of magnitude
+ more likely. (thanks also to Bruno Haible for a similar report
+ and discussions)
+ ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
+ ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
+ for objects of type REAL. Make it so.
+ ** SXHASH is specified (infelicitously) to respect similarity,
+ which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
+ it so. (thanks to Markus Ziegler)
+ ** on the Alpha, the compiler succeeds in compiling functions
+ returning a known number of arguments greater than 63.
+ ** fixed handling of invalid NIL arguments in keyword position
+ in local calls.
+ ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
+ true.
+ ** provided a readably-printable representation for RANDOM-STATE
+ objects.
+ ** ensured that pathnames, where they have a namestring, always
+ print using #P"..." syntax.
-* changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
- fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
- (MAKE-LIST -1). In the longer term, it ought to become true
- that declarations are assertions even at SAFETY 1. For now, it's not
- quite true even at SAFETY 3, but it's at least more nearly true..
- (Note that this change seems to increases the size of the system by
- O(5%) and to decrease the speed of the compiler by 20% or more.)
-* changed ALIEN printing to be much more abbreviated, as a short-term fix
- for the problem of printing dozens of lines of distracting information
- about low-level system machinery as part of the top stack frame
- on entry to the debugger when an undefined function was called.
-* tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
- is not reset to COMMON-LISP-USER.
-* Compilation of stuff related to dyncount.lisp has been made conditional
- on the :SB-DYNCOUNT target feature, so that the ordinary core system is
- smaller. The various dyncount-related symbols have been moved into
- a new "SB-DYNCOUNT" package.
-* tty-inspect.lisp has been renamed to inspect.lisp.
-* unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
- feature has gone away. (When we eventually port to other flavors of
- libc and/or Unix, we'll try to make the differences between flavors
- invisible at the user level.)
-* Various other *FEATURES* tags, and/or their associated conditionals,
- have been removed if obsolescent, or given better documentation, or
- sometimes given more-mnemonic names.
+changes in sbcl-0.8.10 relative to sbcl-0.8.9:
+ * Support for the forthcoming 2.0 version of the NetBSD kernel
+ running on x86 hardware has been added. (thanks to Perry
+ E. Metzger most immediately, and others for their past work)
+ * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
+ current release version; SBCL's OpenBSD support had been broken
+ since about the time of OpenBSD's switch to ELF binary format.)
+ * [placeholder for DX summary]
+ ** user code with &REST lists declared dynamic-extent, under high
+ speed or space and low safety and debug optimization policy.
+ * The manual has been converted to Texinfo format and the debugger
+ chapter from the cmucl manual has been added.
+ * A facility has been added to extract documentation strings from
+ sbcl and store them as Texinfo-formatted snippets for inclusion in
+ the manual (via Texinfo's @include directive)
+ * bug fix: compiler emitted division in optimized DEREF. (thanks for
+ the test case to Dave Roberts)
+ * bug fix: multidimensional simple arrays loaded from FASLs had fill
+ pointers. (reported by Sean Ross)
+ * bug fix: PROFILE output is printed nicely even for large numerical
+ values. (thanks to Zach Beane)
+ * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
+ greater than 32 handle EOF correctly.
+ * bug fix: on X86 an immediate argument of the IMUL instruction is
+ correctly printed in disassembly. (thanks to Lutz Euler)
+ * bug fix: class slots in redefined classes preserve their old
+ values. (thanks to Bruno Haible and Nikodemus Siivola)
+ * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
+ succeeds. (reported by Marco Baringer)
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** READ-SEQUENCE now works on ECHO-STREAMs.
+ ** RATIONALIZE works more according to its specification. (thanks
+ to Bruno Haible)
-changes in sbcl-0.6.2 relative to sbcl-0.6.1:
+changes in sbcl-0.8.9 relative to sbcl-0.8.8:
+ * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
+ *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
+ general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
+ should matter to you only if you rebind the printer control
+ variables and then find you want different bindings in the
+ debugger than in the ordinary execution of your program.)
+ * The runtime build system has been tweaked to support building
+ (on SPARC/SunOS) using a C compiler which invokes Sun's own
+ assembler and linker. (thanks to Nikodemus Siivola)
+ * Unbound, undefined, undeclared variables now trigger full
+ WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
+ more often programmer error than deliberate exploitation of undefined
+ behaviour.
+ * optimization: the hash algorithm for strings has changed to one
+ that is less vulnerable to spurious collisions. (thanks to Juho
+ Snellman)
+ * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
+ needless bounds checking. (thanks to Juho Snellman)
+ * optimization: implemented multiplication as a modular
+ (UNSIGNED-BYTE 32) operation on the PPC backend.
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** ADJUST-ARRAY now copies the datum in a zero rank array if
+ required.
+ ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
+ ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
+ ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
+ element-type NIL.
+ ** CLEAR-INPUT accepts NIL and T for its (optional) stream
+ argument.
+ ** Ratios can now be printed correctly with *PRINT-BASE* bound to
+ 2, 8 or 16.
+ ** ECHO-STREAMs no longer attempt to echo the end of file value to
+ their output stream on EOF from read.
+ ** CONCATENATED-STREAM-STREAMS discards constituent streams which
+ have been read to end-of-file.
+ ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
+ STRING-STREAMS.
+ ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
+ description of determination of which consecutive characters
+ constitute a word.
+ ** Printing the "Space" character with escaping on now yields "#\\ ",
+ rather than "#\\Space", as mandated by ANSI 22.1.3.2.
+ ** Reading floating-point numbers with *READ-BASE* set to a number
+ less than 10 works correctly.
+ ** Reading floating-point numbers with *READ-BASE* set to a number
+ more than 10 works correctly.
+ ** Printing with *PRINT-READABLY* targets the standard readtable, not
+ the readtable currently in effect.
-* (Note that the way that the PCL macroexpansions were rewritten
- to accommodate the change in DEFGENERIC below breaks binary
- compatibility. That is, fasl files compiled under sbcl-0.6.1 may
- not run under sbcl-0.6.2. Once we get out of alpha releases,
- i.e. hit release 1.0.0, we'll probably try to maintain binary
- compatibility between maintenance releases, e.g. between sbcl-1.4.3
- and sbcl-1.4.4. Until then, however, it might be fairly common
- for maintenance releases to break binary compatibility.)
-* A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
- has been fixed.
-* The reporting of unhandled signals has been changed to print some
- explanatory text as well as the report form. (Previously only
- the report form was printed.)
-* The macroexpansion for DEFGENERIC now DECLAIMs the function that
- it defines, so that the compiler no longer issues undefined function
- warnings for compiled-but-not-yet-loaded generic functions.
-* The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
- and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
- and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
- section of the ANSI spec are supported.
-* The "" nickname for the "KEYWORD" package has been removed.
- The reader still handles symbol tokens which begin with a package marker
- as keywords, but it doesn't expose its mechanism for doing so in the
- (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
-* The system now issues STYLE-WARNINGs for contradictory TYPE
- proclamations. (Warnings for contradictory FTYPE proclamations would
- be nice too, but those can't be done usefully unless the type system
- is made smarter about FUNCTION types.)
-* The names of source files "*host-*.lisp" and "*target-*.lisp" have been
- systematized, so that "*target-*.lisp is supposed to exist only on the
- target and imply that there's a related file which exists on the
- host, and *host-*.lisp is supposed to exist only on the host and imply
- that there's a related file which exists on the target. This involves a
- lot of renaming. Hopefully the acute confusion caused by the renaming
- will be justified by the reduction in chronic confusion..
- ** runtime-type.lisp -> early-target-type.lisp
- ** target-type.lisp -> late-target-type.lisp
- ** early-host-format.lisp -> early-format.lisp
- ** late-host-format.lisp -> late-format.lisp
- ** host-error.lisp -> misc-error.lisp
- ** early-error.lisp -> early-target-error.lisp
- ** late-error.lisp -> late-target-error.lisp
- ** host-defboot.lisp -> early-defboot.lisp
- ** code/misc.lisp -> code/target-misc.lisp
- ** code/host-misc.lisp -> code/misc.lisp
- ** code/numbers.lisp -> code/target-numbers.lisp
- ** code/early-numbers.lisp -> numbers.lisp
- ** early-host-type.lisp -> early-type.lisp
- ** late-host-type.lisp -> late-type.lisp
- ** host-typep.lisp -> typep.lisp
- ** load.lisp -> target-load.lisp
- ** host-load.lisp -> load.lisp
- ** host-disassem.lisp -> disassem.lisp
- ** host-insts.lisp -> insts.lisp
- ** byte-comp.lisp -> target-byte-comp.lisp
- ** host-byte-comp.lisp -> byte-comp.lisp
- ** host-signal.lisp -> signal.lisp
- ** host-defstruct.lisp -> defstruct.lisp
- ** late-target-type.lisp -> deftypes-for-target.lisp
- Furthermore, several other previously target-only files foo.lisp (e.g.
- hash-table.lisp and random.lisp) have been split into a target-and-host
- foo.lisp file and a target-only target-foo.lisp file, with their key type
- definitions in the target-and-host part, so that the cross-compiler will
- know more about target types.
-* DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
- gone away. In their place are various *BACKEND-FOO* variables
- corresponding to the slots of the old structure.
-* A bug which caused the SB-COLD bootstrap-time package to be propagated
- into the target SBCL has been fixed.
-* The chill.lisp system for loading cold code into a running SBCL
- now works better.
-* Support for the CMU CL "scavenger hook" extension has been removed.
- (It was undocumented and unused in the CMU CL sources that SBCL was
- derived from, and stale in sbcl-0.6.1.)
-* Various errors in the cross-compiler type system were detected
- by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
- (enabling various consistency checks). Many of them were fixed,
- but some hard problems remain, so the compiler is back to
- running without *TYPE-SYSTEM-INITIALIZED* for now.
-* As part of the cross-compiler type system cleanup, I implemented
- DEF!TYPE and got rid of early-ugly-duplicates.lisp.
-* I have started adding UNCROSS calls throughout the type system
- and the INFO database. (Thus perhaps eventually the blanket UNCROSS
- on cross-compiler input files will be able to go away, and various
- kludges with it).
-* CONSTANTP now returns true for quoted forms (as explicitly required
- by the ANSI spec).
+changes in sbcl-0.8.8 relative to sbcl-0.8.7:
+ * minor incompatible change: parsing of namestrings on a physical
+ (Unix) host has changed; numbers after the final #\. in a
+ namestring are no longer interpreted as a version field. This is
+ intented to be largely invisible to the user, except that the
+ meaning of the namestring "*.*.*" has changed: it now refers to a
+ pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
+ should usually be replaced by
+ (make-pathname :name :wild :type :wild :version :wild)
+ with the added benefit that this is more likely to be portable.
+ As a consequence of this change, the :IF-EXISTS :NEW-VERSION
+ option to OPEN now signals an error if the file being opened
+ exists; this may have an impact on existing code.
+ * fixed bug 190: RUN-PROGRAM should now work properly, respecting
+ signals received, on the PowerPC platforms (both Linux and
+ Darwin). (thanks to Pierre Mai for pointing out the location of
+ the error)
+ * several fixes on OS X: The system now builds and runs cleanly on
+ Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
+ (thanks to Brian Mastenbrook)
+ * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
+ second-resolution: integer multiples of 1/3600 between -24 and 24.
+ (thanks to Vincent Arkesteijn)
+ * bug fix: functions =, /=, <, <=, >, >= did not check the argument
+ type when called with 1 argument; PEEK-CHAR checked type of
+ PEEK-TYPE only after having read first character from a
+ stream. (reported by Peter Graves)
+ * bug fix: the garbage collector now has much better locality
+ behaviour, and in particular no longer treats all memory as being
+ exhausted when many small objects point to each other in a deeply
+ recursive manner.
+ * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
+ recognized as being TYPEP their class.
+ * bug fix: the PUSHNEW documentation string has been corrected.
+ (thanks to Vincent Arkesteijn)
+ * bug fix: defaulting of the value for the last of an atypically
+ large number of multiple values being bound was not being
+ performed correctly on the Alpha or PPC platforms
+ * optimization: implemented multiplication as a modular
+ (UNSIGNED-BYTE 32) operation on the x86 backend.
+ * optimization: SEARCH on simple-base-strings can now be open-coded.
+ (see also contrib/compiler-extras.lisp for inspiration for
+ teaching the compiler about the Boyer-Moore algorithm).
+ * value, returned by MAX (and MIN) called with several EQUALP, but
+ not EQL, arguments now does not depend on compiler settings.
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** in stack analysis liveness information is propagated from
+ non-local entry points.
+ ** pathwise CAST removing failed when the CAST node did not start
+ a block.
+ ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
+ OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
+ stream.
+ ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
+ host is already defined.
+ ** RENAME-FILE works on streams instead of signalling an internal
+ type error.
+ ** PEEK-CHAR uses the current readtable when determining whether
+ or not a character is whitespace.
+ ** MERGE-PATHNAMES handles the case when the pathname does not
+ specify a name while the default-pathname specifies a version.
+ ** Pathnames now stand a better chance of respecting print/read
+ consistency.
+ ** Attempting to use standardized file system operators with a
+ pathname with invalid :DIRECTORY components signals a
+ FILE-ERROR.
+ ** OPEN :DIRECTION :IO no longer fails to work on non-existent
+ files.
+ ** DIRECTORY on logical pathnames is more correct.
+ ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
+ signal a TYPE-ERROR if their argument is not a stream.
+ ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
+ designator argument does not designate a stream.
+ ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
+ examining the synonym.
+ ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
+ work as specified.
+ ** OPEN and WITH-OPEN-STREAM allow opening streams with
+ element-type larger than ([UN]SIGNED-BYTE 32).
-changes in sbcl-0.6.3 relative to sbcl-0.6.2:
+changes in sbcl-0.8.7 relative to sbcl-0.8.6:
+ * When built with the :SB-FUTEX feature, threaded builds now take
+ advantage of the "fast userspace mutex" facility in Linux kernel 2.6
+ for faster/more reliable mutex and condition variable support.
+ * Incompatible change (but one you probably shouldn't have been using
+ anyway): the interface and code for arbitrating between multiple
+ threads in the same user session has been redesigned.
+ * bug fix: GET-SETF-EXPANSION no longer throws an internal type
+ error when called without an explicit environment argument.
+ (thanks to Nikodemus Siivola)
+ * bug fix: buffered :DIRECTION :IO streams are less likely to become
+ confused about their position. (thanks to Adam Warner and Gerd
+ Moellmann)
+ * bug fix: Pretty printing backquoted forms with unquotations in the
+ argument list position of various code constructs such as LAMBDA
+ now works correctly. (reported by Paul Dietz)
+ * bug fix: Pretty printing unquotations no longer loses all
+ stream position information.
+ * optimization: performance of string output streams is now less
+ poor for multiple small sequence writes.
+ * optimization: performance of CSUBTYPEP in the presence of complex
+ expressions involving CONS and NOT many times has been improved.
+ (reported by Paul Dietz)
+ * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
+ Sean Ross)
+ * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
+ streams for the REPL, for the debugger, and so on. (thanks to
+ David Licteblau)
+ * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
+ is ignored if it is too small, rather than propagating through
+ to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
+ ** extremely complex negations of CONS types were not being
+ sufficiently canonicalized, leading to inconsistencies in
+ SUBTYPEP.
+ ** VALUES tranformer lost derived type.
-* The system still can't cross-compile itself with
- *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
- entails), but at least it can compile more of itself that way
- than it used to be able to, and various buglets which were uncovered
- by trying to cross-compile itself that way have now been fixed.
-* This release breaks binary compatibility again. This time
- at least I've incremented the FASL file format version to 2, so that the
- problem can be detected reliably instead of just causing weird errors.
-* various new style warnings:
- ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
- ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
- ** using the lexical binding of a variable named in the *FOO* style
-* DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
- as specified by ANSI.
-* *RANDOM-STATE* is no longer automatically initialized from
- (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
- default behavior of the system is to repeat its behavior every time
- it's run. If you'd like to change this behavior, you can always
- explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
- old convention there was no comparably easy way to get the system to
- repeat its behavior every time it was run.
-* Support for the pre-CLTL2 interpretation of FUNCTION declarations as
- FTYPE declarations has been removed, in favor of their ANSI
- interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
-* The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
- the types of their sequence arguments can be determined at compile time.
- This is done through a new open code expansion for MAP which eliminates
- consing for (MAP NIL ..), and reduces consing otherwise, when sequence
- argument types can be determined at compile time.
-* The optimizer now transforms COERCE into an identity operation when it
- can prove that the coerced object is already of the correct type. (This
- can be a win for machine generated code, including the output of other
- optimization transforms, such as the MAP transform above.)
-* Credit information has been moved from source file headers into CREDITS.
-* Source file headers have been made more standard.
-* The CASE macro now compiles without complaining even when it has
- no clauses.
+changes in sbcl-0.8.6 relative to sbcl-0.8.5:
+ * fixed a bootstrapping bug: the build process no longer assumes
+ that the various BOOLE-related constants have the same value in
+ host and target lisps. (noted by Paul Dietz' test suite on an
+ SBCL binary built from CLISP)
+ * The system can now be dynamically linked on the MIPS platform,
+ which enables dynamic loading of foreign code from Lisp. (thanks
+ to Ralf Baechle for discussions on the MIPS ABI)
+ * The system now records debugging information for its own source
+ files in a filesystem-position-independent manner, relative to
+ the "SYS" logical host.
+ * fixed a compiler bug: MV-LET convertion did not check references
+ to the "max args" entry point. (reported by Brian Downing)
+ * tweaked disassembly notes to be less confident about proclaiming
+ some instruction as an LRA. (thanks to Brian Downing)
+ * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
+ now each have their own history, command character, and other
+ characteristics. (thanks to David Lichteblau)
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** compiler failure in compiling LOGAND expressions including a
+ constant 0
+ ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
+ shift greater than 32.
+ ** FLUSH-DEST did not mark blocks for type check regeneration.
+ ** HANDLER-CASE failed to accept declarations in handler clauses
+ in some circumstances.
-changes in sbcl-0.6.4 relative to sbcl-0.6.3:
+changes in sbcl-0.8.5 relative to sbcl-0.8.4:
+ * New code in contrib/sb-introspect (still probably not entirely
+ stable yet) provides some support for smart Lisp development
+ environments like SLIME.
+ * The conditions signalled for errors occurring when loading .fasl
+ files have been systematized (inheriting from SB-EXT:INVALID-FASL)
+ in a way which should help ASDF recover gracefully.
+ * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
+ stuff has been cleaned up. If you code contrib/ stuff, this might
+ affect you, and you can look at contrib/README, contrib/STANDARDS,
+ and/or the 0.8.4.27 diff to check.
+ * In full calls the compiler now does not generate checks for declared
+ argument types for all arguments.
+ * various threading fixes
+ ** and some experimental patches which didn't make it into
+ the main tree for this release, but which are shipped in
+ contrib/experimental-thread.patch as a possible fix for some
+ failures (deadlock, spinning...) in GC-intensive multithreaded
+ applications.
+ * fixed PPC build problem (source code incompatibility of different
+ library versions): added offsetof() hackery which attempts to divine
+ where glibc maintainers put uc_mcontext today
+ * fixed bug 282: compiler does not trust type assertions while passing
+ arguments to a full call.
+ * fixed bug 261: compiler allows NIL or "no value" to be accepted for
+ &OPTIONAL VALUES type parameter.
+ * fix bug 214: algorithm for noting rejected templates is now more
+ similar to that of template seletion. (also reported by rydis on
+ #lisp)
+ * fixed bug 141b: printing backquoted information readably and prettily
+ inserts a space where necessary.
+ * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
+ (CHARACTER 10) are now reported as errors, rather than propagated
+ as unknown types. (reported by piso on #lisp)
+ * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
+ with values NIL and :ERROR. (thanks to Milan Zamazal)
+ * fixed bug 191c: CLOS now does proper keyword argument checking as
+ described in CLHS 7.6.5 and 7.6.5.1.
+ * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
+ longer raise an error; further, using a list as a for-as-arithmetic
+ counter now raises a meaningful error.
+ * fixed bug 213a: even fairly unreasonable CONS type specifiers are
+ now understood by sequence creation functions such as MAKE-SEQUENCE
+ and COERCE.
+ * fixed bug 46k: READ-BYTE now signals an error when asked to read from
+ a STRING-INPUT-STREAM.
+ * compiler enhancement: SIGNUM is now better able to derive the type
+ of its result.
+ * type declarations inside WITH-SLOTS are checked. (reported by
+ salex on #lisp)
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** incorrect optimization of TRUNCATE for a positive first
+ argument and negative second.
+ ** compiler failure in let-convertion during flushing dead code.
+ ** compiler failure while deriving type of TRUNCATE on an
+ interval, containing 0.
+ ** ASH of a negative bignum by a negative bignum count now returns
+ -1, not 0.
+ ** intersection of CONS types now canonicalizes properly, fixing
+ inconsistencies in SUBTYPEP.
-* There is now a partial SBCL user manual (with some new text and some
- text cribbed from the CMU CL manual).
-* The beginnings of a profiler have been added (starting with the
- CMU CL profiler and simplifying and cleaning up). Eventually the
- main interface should be through the TRACE macro, but for now,
- it's still accessed through vaguely CMU-CL-style functions and macros
- exported from the package SB-PROFILE.
-* Some problems left over from porting CMU CL to the new
- cross-compilation bootstrap process have been cleaned up:
- ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
- instead of SB!XC:DEFMACRO, compounded by an oversight on my
- part when getting rid of the compiler *BACKEND* stuff.)
- ** The value of *NULL-TYPE* was screwed up, because it was
- being initialized before the type system knew the final
- definition of the 'NULL type. This screwed up several key
- optimizations in the compiler, causing inefficiency in all sorts
- of places. (I found it because I wanted to understand why
- GET-INTERNAL-RUN-TIME was consing.)
-* fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
- PROCLAIM FTYPE information. Unfortunately this broke binary
- compatibility again, since now the forms output by DEFGENERIC
- to refer to functions which didn't exist in 0.6.3.
-* added declarations so that SB-PCL::USE-CACHING-DFUN-P
- can use the new (as of 0.6.3) transform for SOME into MAP into
- inline code
-* changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
- values to (INTEGER 0 1000000), so that the time code will no longer
- occasionally get blown up by Linux returning 1000000 microseconds
-* PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
- its output conform to the ANSI spec. (Alas, this makes its output
- uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
-* A full call to MAP NIL with a single sequence argument no longer conses.
-* fixes to problems pointed out by Martin Atzmueller:
- * The manual page no longer talks about multiprocessing as though
- it were currently supported.
- * The ILISP support patches have been removed from the distribution,
- because as of version 5.10.1, ILISP now supports SBCL without us
- having to maintain patches.
-* added a modified version of Raymond Toy's recent CMU CL patch for
- EQUALP comparison of HASH-TABLE
-
-changes in sbcl-0.6.5 relative to sbcl-0.6.4:
+changes in sbcl-0.8.4 relative to sbcl-0.8.3:
+ * incompatible change: The --disable-debugger command line
+ option now clobbers the debugger at a more fundamental
+ level, by redefining #'INVOKE-DEBUGGER instead of by
+ rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
+ is specified by ANSI to ignore *DEBUGGER-HOOK* and
+ INVOKE-DEBUGGER regardless. Under the old system, BREAK would
+ enter the debugger REPL and then suffer recursive errors
+ because *DEBUG-IO* is also messed up in --disable-debugger mode;
+ while under the new system, BREAK in --disable-debugger mode
+ terminates the system just as an unhandled error would.
+ * fixed compiler performance when processing loops with a step >1;
+ * bug fix: DOCUMENTATION now retrieves generic function
+ documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
+ support has been systematized, and now supports the methods
+ specified by ANSI, along with a default method and a method for
+ slot documentation. (reported by Nathan Froyd)
+ * bug fix: effective methods associated with a generic function are
+ no longer cached over a change of that generic function's method
+ combination. (reported by Andreas Fuchs)
+ * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
+ names a non-existent directory. (thanks to Andreas Fuchs)
+ * bug fix: ROUND and TRUNCATE could, under certain circumstances on
+ the PPC platform, lead to stack corruption; this has been fixed.
+ (reported by Rainer Joswig)
+ * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
+ no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
+ * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
+ arithmetic in general, is now much more reliable on the PPC
+ platform.
+ * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
+ platform now returns the right answer.
+ * optimization: restored some effective method precomputation in
+ CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
+ precomputation is now tunable.
+ * optimization: compiler-internal data structure use has been
+ reviewed, and changes have been made that should improve the
+ performance of the compiler by about 20%.
+ * optimization: performance of FILL (and :INITIAL-ELEMENT) on
+ simple-base-strings and simple-bit-vectors is improved.
+ * optimization: the optimization of 32-bit logical and arithmetic
+ functions introduced in version 0.8.3 on the x86 has been
+ implemented on the mips, ppc and sparc platforms; an
+ implementation of the same facility, but for 64-bit arithmetic,
+ has been added for the alpha.
+ * microoptimization: the compiler is better able to make use of the
+ x86 LEA instruction for multiplication by constants.
+ * bug fix: in some situations compiler did not report usage of
+ generic arithmetic in (SPEED 3) policy.
+ * bug 145b fix: compiler used wrong type specifier while converting
+ MEMBER-types to numeric.
+ * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
+ McNaught)
+ * bug fix: (SETF AREF) on byte-sized-element arrays with constant
+ index argument now works properly on the Alpha platform.
+ * bug fix: floating point exception treatment on the Alpha platform
+ is improved.
+ * bug fix: FILE-POSITION works much better on string input and
+ output streams. (thanks to Nikodemus Siivola)
+ * bug fix: many threading/garbage collection symptoms sorted.
+ SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
+ might be pseudo-atomic.
+ * internal change: Stopping for GC is now done with signals not
+ ptrace. GC is now done in whichever thread wanted it, instead of
+ in the parent.
+ * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
+ work again.
+ * bug fix: result form in DO is not contained in the implicit
+ TAGBODY.
+ * incompatible change: ICR structure is changed; the value part of
+ CONTINUATION is now called LVAR; corresponding functions are
+ renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
+ * added type deriver for ISQRT (thanks to Robert E. Brown).
+ * bug fix: better support for loading from the command line when an
+ initialization file sets (READTABLE-CASE *READTABLE*). (thanks
+ to Adam Warner)
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
+ ** ROUND and FROUND now give the right answer when given very
+ small float arguments.
+ ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
+ circumstances.
+ ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
+ ** (GCD 0 <negative-integer>) returned <negative-integer>.
+ ** LCM should return a non-negative integer.
+ ** PARSE-INTEGER returned the index of a terminator instead of the
+ upper bounding index of a substring in case :JUNK-ALLOWED NIL.
+ ** PARSE-INTEGER returned an incorrect index being applied to a
+ displaced string.
+ ** LCM with two arguments of 0 returns 0 rather than signalling
+ DIVISION-BY-ZERO.
+ ** unsigned addition of a 32-bit constant with the high bit set no
+ longer causes an internal compiler error on the x86.
+ ** LOGBITP accepts a non-negative bignum as its INDEX argument.
+ ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
+ with negative last argument.
+ ** byte specifiers with zero size and position no longer cause
+ an error during type derivation.
+ ** bignum multiplication on the Alpha platform now returns the
+ right answer.
+ * porting: The system now builds on SuSE AMD64, although it still
+ generates a 32-bit binary.
+ * .fasl file incompatibility: The fasl file version number has
+ been incremented (because of the changes to internal compiler
+ data structures referred to above).
-* Raymond Wiker's patches to port the system to FreeBSD have been merged.
-* The build process now looks for GNU make under the default name "gmake",
- instead of "make" as it used to. If GNU make is not available as "gmake"
- on your system, you can change this default behavior by setting the
- GNUMAKE environment variable.
-* Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
- can build without error under CMU CL.
+changes in sbcl-0.8.3 relative to sbcl-0.8.2:
+ * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
+ more accurately, on the Darwin kernel running on PowerPC hardware.
+ (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
+ * Compiler code deletion notes now signal a condition of type
+ SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
+ an associated MUFFLE-WARNING restart.
+ * The compiler now performs limited argument count validation of
+ constant format strings in FORMAT, and where appropriate in ERROR,
+ CERROR and WARN. (thanks to Gerd Moellmann)
+ * New ASDF-INSTALL contrib can be used for automatic download and
+ installation of third-party Lisp code from CCLAN or other sites
+ via CLiki.
+ * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
+ which forces another thread to execute a function supplied by the
+ caller.
+ * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
+ now accept and act upon their :ELEMENT-TYPE keyword argument.
+ (reported by Martin Atzmueller, Edi Weitz)
+ * bug fix: FILE-POSITION now accepts position designators up to
+ ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
+ is the greater. (thanks to Patrik Nordebo)
+ * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
+ Kalle Olavi Niemitalo)
+ * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
+ printable. (reported by Eric Marsden)
+ * bug fix in sb-posix: mmap() now works on systems with a 64-bit
+ off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
+ * x86 bug fix in control stack exhaustion checking: now shows backtrace
+ * bug fix in WITH-TIMEOUT: now the body can have more than one form.
+ (thanks to Stig Sandoe)
+ * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
+ UNREAD-CHAR now correctly includes the unread character in the
+ target sequence. (thanks to Gerd Moellmann)
+ * bug fix in threaded builds: the system can now be suspended and
+ resumed by shell job control with minimal disruption.
+ * bug fixes in times and timezones >2038AD
+ * better handling of "where is GNU make?" problem in build scripts
+ (thanks to Nikodemus Siivola)
+ * new optimization: inside a named function any reference to a
+ function with the same name is considered to be a self-reference;
+ this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
+ optimization quality.
+ * new optimization on x86: logical functions and + now have
+ optimized (UNSIGNED-BYTE 32) versions, which are automatically
+ used when the result is truncated to 32 bits.
+ * VALUES declaration is partially enabled.
+ * fixes in SB-GROVEL (thanks to Andreas Fuchs)
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** The system now obeys the constraint imposed by
+ UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
+ types form a lattice under type intersection.
+ ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
+ ** ASSOC now ignores NIL elements in an alist.
+ ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
+ and (1+ MOST-POSITIVE-FIXNUM) answers.
+ ** The addition of a method with invalid qualifiers to a generic
+ function does not cause an error to be signalled immediately;
+ a warning is signalled, and the error is generated only on
+ calling the generic function.
+ * changed .fasl file version number, in part to add type codes for
+ new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
+ obscure ANSI requirements
-changes in sbcl-0.6.6 relative to sbcl-0.6.5:
+changes in sbcl-0.8.2 relative to sbcl-0.8.1:
+ * fixed bug 148: failure to inline-expand a local function left
+ garbage, confusing the compiler.
+ * fixed bugs 3cd: structure slot readers perform type check if the
+ slot can have an invalid value (i.e. it is either not initialized
+ or can be written with a less specific slot writer).
+ * bug fix: the compiler now traps array references to elements off
+ the end of an array; previously, the bounds checking in some
+ circumstances could go off-by-one.
+ * improved MACHINE-VERSION, especially on Linux (thanks to Lars
+ Brinkhoff)
+ * type declarations for array element types now obey the description
+ on the CLHS page "Declaration TYPE", as per discussions on
+ sbcl-help around 2003-05-08. This means that a declaration
+ (TYPE (ARRAY FOO) BAR) means that, within the scope of the
+ declaration, all references to BAR will be asserted or assumed
+ (with THE, so dependent on compiler policy) to involve objects of
+ type FOO. Note that no such declaration is implied in
+ (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
+ * declared types of functions from the "Conditions"
+ chapter. (reported by Paul Dietz)
+ * bug fix: CERROR accepts a function as its first argument.
+ * bug fix: NTH an NTHCDR accept a bignum as index
+ arguments. (reported by Adam Warner)
+ * optimization: character compare routines now optimize comparing
+ against a constant character. (reported by Gilbert Baumann)
+ * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
+ argument now works properly on the MIPS platform.
+ * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
+ * repeated evaluation of the same DEFSTRUCT, a slot of which is
+ declared to have a functional type, does not cause an error
+ anymore.
+ * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
+ many :DEFAULT-INITARGS. (reported by Istvan Marko)
+ * fixed bug: if last continuation of a deleted block has a
+ destination, this destination should be deleted too. (reported by
+ ohler on #lisp)
+ * fixed a bug in the bootstrap process: the host compiler's values
+ of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
+ into the newly-built SBCL. (reported by Eric Marsden on #lisp,
+ test case from Patrik Nordebo)
+ * improved the ability of the disassembler on the PPC platform to
+ provide helpful disassembly notes.
+ * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
+ the class in more cases than previously.
+ * bug fix: FILE-POSITION now understands :START and :END for
+ STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
+ * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
+ 8) data. (thanks to David Lichteblau)
+ * bug fix: it is possible to add a method to a generic function
+ without lambda list.
+ * bug fix: reader failed to signal END-OF-FILE inside an
+ object representation. (reported by Nikodemus Siivola)
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** LAST and [N]BUTLAST should accept a bignum.
+ ** condition slot accessors are methods.
+ ** (VECTOR NIL) is a subtype of STRING.
-* DESCRIBE no longer tries to call itself recursively to describe
- bound/fbound values, so that it no longer fails on symbols which are
- bound to themselves (like keywords, T, and NIL).
-* DESCRIBE now works on generic functions.
-* The printer now prints less-screwed-up representations of closures
- (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
-* A private symbol is used instead of the :EMPTY keyword previously
- used to mark empty slots in hash tables. Thus
- (DEFVAR *HT* (MAKE-HASH-TABLE))
- (SETF (GETHASH :EMPTY *HT*) :EMPTY)
- (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
- now does what ANSI says that it should. (You can still get
- similar noncompliant behavior if bang on the hash table
- implementation with all the symbols you get back from
- DO-ALL-SYMBOLS, but at least that's a little harder to do.)
- This breaks binary compatibility, since tests for equality to
- :EMPTY are wired into things like the macroexpansion of
- WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
- implementations.
-* There's now a minimal placeholder implementation for CL:STEP,
- as required by ANSI.
-* An obscure bug in the interaction of the normal compiler, the byte
- compiler, inlining, and structure predicates has been patched
- by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
- :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
- mailing list).
-* Missing ordinary arguments in a macro call are now detected even
- when the macro lambda list contains &KEY or &REST.
-* The debugger no longer complains about encountering the top of the
- stack when you type "FRAME 0" to explicitly instruct it to go to
- the top of the stack. And it now prints the frame you request even
- if it's the current frame (instead of saying "You are here.").
-* As specified by ANSI, the system now always prints keywords
- as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
- KEYWORD package.
-* The default initial SIZE of HASH-TABLEs is now smaller.
-* Type information from CLOS class dispatch is now propagated
- into DEFMETHOD bodies, so that e.g.
- (DEFMETHOD FOO ((X SINGLE-FLOAT))
- (+ X 123.0))
- is now basically equivalent to
- (DEFMETHOD FOO ((X SINGLE-FLOAT))
- (DECLARE (TYPE SINGLE-FLOAT X))
- (+ X 123.0))
- and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
- operation, without having to do run-time type dispatch.
-* The macroexpansion of DEFMETHOD has been tweaked so that it has
- reasonable behavior when arguments are declared IGNORE or IGNORABLE.
-* Since I don't seem to be making big file reorganizations very often
- any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
- is overflowing my ability to conveniently back them up), I've finally
- checked the system into CVS. (The CVS repository is on my home system,
- not at SourceForge -- putting it on SourceForge might come later.)
-* SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
- high-level GC-NOTIFY-FOO functions send their output. (There's
- still very little control of where low-level verbose GC functions
- send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
- less than it used to -- the GC-NOTIFY-FOO functions are now under
- the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
-* The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
- in only one place in the source code, and propagates it automatically
- everywhere that it's needed. Thus e.g. when I bump the version from
- 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
-* The C source files now include boilerplate legalese and documentation
- at the head of each file (just as the Lisp source files already did).
-* At Dan Barlow's suggestion, the hyperlink from the SBCL website
- to his page will be replaced with a link to his new CLiki service.
+changes in sbcl-0.8.1 relative to sbcl-0.8.0:
+ * minor incompatible change: some nonsensical specialized lambda
+ lists (used in DEFMETHOD) which were previously ignored now signal
+ errors.
+ * minor incompatible change: the system is now aware of the types of
+ variables in the COMMON-LISP package, and will signal errors for
+ most violations of these type constraints (where previously they
+ were silently accepted).
+ * minor incompatible change: COMPILE-FILE now uses the freedom
+ afforded (ANSI 3.2.2.3) to use derived function types for
+ functions defined in the same file. This also permits the system
+ to warn on static type mismatches and function
+ redefinition. (Currently it does not work with high DEBUG level.)
+ * minor incompatible change: VALUES declaration is disabled.
+ * When issuing notes, the compiler now signals a condition of type
+ SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
+ restart for use in user handlers. It is expected that the
+ COMPILER-NOTE condition will eventually become a condition
+ supertype to a hierarchy of note types, which will then be
+ handleable in a similar fashion. However, at the moment, no such
+ note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
+ but it's an implementation detail, not a classification for the
+ purpose above.)
+ * Changes in type checking closed the following bugs:
+ ** type checking of unused values (192b, 194d, 203);
+ ** template selection based on unsafe type assertions (192c, 236);
+ ** type checking in branches (194bc).
+ * A short form of VALUES type specifier has ANSI meaning (it has
+ increased the number of situations when SBCL cannot perform type
+ checking).
+ * fixed bug in DEFSTRUCT: once again, naming structure slots with
+ keywords or constants is permissible.
+ * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
+ defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
+ classes. (thanks to Antonio Martinez)
+ * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
+ outputs FRESH-LINE or TERPRI, and no longer converts its stream
+ argument to a pretty-print stream. Instead, it leaves any such
+ operations to DESCRIBE-OBJECT methods.
+ * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
+ by Teemu Kalvas)
+ * bug fix: NIL is now a valid destructuring argument in DEFMACRO
+ lambda lists. (thanks to David Lichteblau)
+ * bug fix: Defining a generic function with a :METHOD-CLASS being a
+ subclass of STANDARD-METHOD no longer causes stack exhaustion.
+ (thanks to Gerd Moellmann)
+ * fixed bug 246: increased compilation speed of long
+ MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
+ integer argument)
+ * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
+ has been included.
+ * DEFCONSTANT now throws a condition of type
+ SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
+ constant to a non-EQL value; CONTINUE and ABORT restarts
+ respectively change and preserve the value.
+ * fixed bug 63: The code walker, part of the implementation of CLOS,
+ is now better at handling symbol macros.
+ * bug fix: There is no longer an internal implementation type named
+ CL:LENGTH. (reported by Raymond Toy)
+ * bug fix: In macro-like defining macros/special operators the
+ implicit block does not enclose the lambda list.
+ * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
+ enclosed in parentheses) are not suitable as type specifiers, and
+ their use properly signals an error now.
+ * bug fix: An argument count mismatch for a type specifier in code
+ being compiled no longer causes an unhandled error at compile
+ time, but signals a compile-time warning.
+ * fixed simple vector readable printing
+ * bug fix: DESCRIBE takes more care over whether the class
+ precedence list slot of a class is bound before accessing it.
+ (reported by Markus Krummenacker)
+ * bug fix: FORMATTER can successfully compile pretty-printer format
+ strings which use variants of the ~* directive inside.
+ * bug fix: SEARCH now applies its TEST predicate to the elements of
+ the arguments in the correct order. (thanks to Wolfhard Buss)
+ * fixed bug 235b: The compiler uses return types of MAPCAR and friends
+ in type inference. (thanks to Robert E. Brown)
+ * bug fix: Reading in symbols with an explicit package name of ""
+ (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** NIL is now allowed as a structure slot name.
+ ** Arbitrary numbers, not just REALs, are allowed in certain
+ circumstances in LOOP for-as-arithmetic clauses.
+ ** Multiple class redefinitions before slot access no longer
+ causes a type error.
+ ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
+ association between the name and a class.
+ ** Generic functions with non-standard method-combination and over
+ five methods all of which return constants no longer return NIL
+ after the first few invocations. (thanks to Gerd Moellmann)
+ ** CALL-NEXT-METHOD with no arguments now passes the original
+ values of the arguments, even in the presence of assignment.
+ ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
+ object.
+ ** DISASSEMBLE works with closures and funcallable instances.
+ ** ADD-METHOD now returns the generic function, not the new method.
+ ** FIND-METHOD signals an error if the lengths of the specializers
+ is incompatible with the generic function, even if the ERRORP
+ argument is true.
+ ** TYPE-OF returns recognizeable subtypes of all built-in-types of
+ which its argument is a member.
+ ** DEFCLASS only redefines the class named by its class-name
+ argument if that name is the proper name of the class;
+ otherwise, it creates a new class.
+ ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
+ of the UNBOUND-SLOT condition to the name of the slot.
+ ** (SETF (AREF bv 0) ...) did not work for bit vectors.
+ ** SLOT-UNBOUND and SLOT-MISSING now have their return values
+ treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
+ SLOT-MAKUNBOUND in the specified fashion.
-changes in sbcl-0.6.7 relative to sbcl-0.6.6:
+changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
+ * SBCL now builds using CLISP (version of late April 2003 from CVS) as
+ cross-compilation host. As a consequence, we can now bootstrap our
+ way up to SBCL starting with a bare gcc toolchain and human-readable
+ source code (first the source to CLISP, then the source to SBCL).
+ * A contributed module containing a partial implementation of the
+ simple-streams interface has been included. (thanks to Rudi
+ Schlatte)
+ * A contributed module implementing the RFC1321 Message Digest
+ Algorithm, known as MD5, has been included.
+ * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
+ no longer has any effect, as the code controlled by this feature
+ has been deleted. (As far as we know, no-one has ever built using
+ this feature, and its semantics were confused in any case).
+ * minor incompatible change: As a consequence of making SLOT-EXISTS-P
+ work on conditions (as required by the ANSI specification),
+ SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
+ expected behaviour on conditions. Users should note, however,
+ that such behaviour is not required by the ANSI specification,
+ and so use of this behaviour may render their code unportable.
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
+ types.
+ ** &ENVIRONMENT parameter in macro lambda list is bound first.
+ ** SXHASH on condition objects no longer returns NIL.
+ ** :ALLOCATION :CLASS slots are better treated; their values are
+ updated on class redefinition, and initforms inherited from
+ superclasses are applied.
+ ** REMOVE-METHOD returns its generic function argument even when
+ no method was removed.
+ ** SHARED-INITIALIZE now initializes the values of the requested
+ slots, including those with :ALLOCATION :CLASS.
+ ** ALLOCATE-INSTANCE now works on structure classes defined via
+ DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
+ STRUCTURE-CLASS).
+ ** SLOT-EXISTS-P now works on conditions, as well as structures
+ and CLOS instances.
+ ** MAKE-LOAD-FORM now has the required methods on
+ STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
+ ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
+ keyword, and now implements the SLOT-NAMES argument.
+ ** methods with &OPTIONAL arguments no longer allow too many
+ arguments to be passed in the call without error.
+ ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
+ option is consistent with the required arguments of the generic
+ function lambda list.
+ * bug fix: REQUIRE accepts a string designator. (Thanks to
+ Antonio Martinez.)
+ * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
+ SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
+ specified-by-AMOP lambda list of (CLASS &REST INITARGS).
+ * bug fix: The compiler now checks for duplicated variables in macro
+ lambda lists.
+ * bug fix: SETQ on globals returns the correct value.
+ * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
+ not a COMPILER-ERROR (followed by some other strange error on
+ choosing the CONTINUE restart).
+ * bug fix: make.sh and friends are now more consistent in the way that
+ they look for GNU "make".
+
+changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
+ * experimental native threads support (on x86 Linux >=2.4 only).
+ This is not compiled in by default: you need to add :SB-THREAD to
+ the target features. See the "Beyond ANSI" chapter of the manual
+ for details.
+ * fix for longstanding nonANSIism: The old distinction between
+ CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
+ The return value from CL:FIND-CLASS is now a CLOS class, and
+ likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
+ CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
+ * An interface to the MetaObject Protocol, as described in Kiczales,
+ des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
+ MIT Press, 1991, is available from the SB-MOP package.
+ * incompatible change: the SB-PCL package should now be considered
+ a private implementation detail, and no longer a semi-private MOP
+ interface.
+ * minor incompatible change: due to rearrangement for threads, the
+ control stack and binding stack are now allocated at arbitrary
+ addresses instead of being hardcoded per-port. Users affected by
+ this probably have to be doing advanced things with shared
+ libraries, and will know who they are.
+ * minor incompatible change: Previously, all --eval forms used were
+ processed with READ before any of them were processed with EVAL.
+ Now each --eval form is processed with both READ and EVAL before
+ the next --eval form is processed. (Thus package operations like
+ sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
+ work as the user might reasonably expect.)
+ * minor incompatible change: *STANDARD-INPUT* is now only an
+ INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
+ Martinez)
+ * minor incompatible change: Y-OR-N-P is now character-oriented,
+ not line oriented. Also, YES-OR-NO-P now works without errors.
+ (thanks to Antonio Martinez)
+ * sb-aclrepl module improvements: an integrated inspector, added
+ repl features, and a bug fix to :trace command.
+ * Known functions, which cannot be open coded by the backend, are
+ considered to be able to check types of their arguments. (fixing
+ a bug report by Nathan J. Froyd)
+ * fixed a bug in computing method discriminating functions: It is
+ now possible to define methods specialized on classes which have
+ forward-referenced superclasses. (thanks to Gerd Moellmann)
+ * fixed evaluation order in optional entries (reported by Gilbert
+ Baumann)
+ * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
+ specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
+ * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
+ required-by-AMOP NAME argument, as well as CLASS and
+ DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
+ * fixed bug 20: DEFMETHOD can define methods using names that are
+ not the proper names of classes to designate class specializers.
+ * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
+ Unix file descriptors, instead of blowing up. (thanks to Antonio
+ Martinez)
+ * Garbage collection refactoring: user-visible change is that a
+ call to the GC function during WITHOUT-GCING will not do garbage
+ collection until the end of the WITHOUT-GCING. If you were doing
+ this you were probably losing anyway.
+ * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
+ (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
+ TYPEP the latter but not the former.
+ * The compiler issues a full WARNING for calls to undefined functions
+ with names from the CL package.
+ * MAP-INTO for a vector destination is open coded. (reported by
+ Brian Downing on c.l.l)
+ * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
+ documentation string.
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** COPY-ALIST now signals an error if its argument is a dotted
+ list.
+ ** Condition slots are now accessed more correctly in the presence
+ of multiple initargs for a given slot.
+ ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
+ exclude restarts of the same name associated with a different
+ condition.
+ ** DEFCLASS of forward-referenced classes with another
+ forward-referenced class in the superclasses list no longer
+ causes an error.
+ ** Condition slots are now initialized once each, not multiple
+ times. (thanks to Gerd Moellmann)
+ ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
+ Gerd Moellmann)
+ ** &WHOLE and &REST arguments in macro lambda lists are patterns.
+ ** NSET-EXCLUSIVE-OR does not return extra elements when its
+ arguments contain duplicated elements.
+ ** RESTART-CASE understands local macros.
+ ** RESTART-CASE associates exactly its own restarts with a condition.
+ ** ENDP in safe mode checks its argument to be of type LIST.
+ ** COPY-SYMBOL in a threaded build no longer fails when the symbol
+ in question is unbound.
+ ** Optimized MAKE-INSTANCE functions no longer cause internal
+ assertion failures in the presence of duplicate initargs.
+ ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
+ ** Side-effectful :DEFAULT-INITARGS have their side-effects
+ propagated even in the ctor optimized implementation of
+ MAKE-INSTANCE.
+ ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
+
+changes in sbcl-0.7.14 relative to sbcl-0.7.13:
+ * a better implementation of SXHASH on (simple) bit vectors,
+ measured both in execution speed and in distribution of results
+ over the positive fixnums, has been installed. Likewise, a better
+ implementation of EQUAL for simple bit vectors is now available.
+ * fixed CEILING optimization for a divisor of form 2^k.
+ * fixed bug 240 (emitting extra style warnings "using the lexical
+ binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
+ by Antonio Martinez)
+ * fixed SXHASH, giving different results for NIL depending on type
+ declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
+ * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
+ variable. (found by Rolf Wester)
+ * SBCL does not ignore type declarations for special
+ variables. (reported by rif on c.l.l 2003-03-05)
+ * some bug fixes in contrib/sb-aclrepl/
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** a bug in the CONS type specifier, whereby the CAR and CDR
+ types got intertwined, has been fixed;
+ ** the type system is now able to reason about the interaction
+ between INTEGER and RATIO types more completely;
+ ** APPEND, [N]REVERSE and NRECONC check that those their
+ arguments, which must be proper lists, are really so;
+ ** An array specialized to be unable to hold elements has been
+ implemented, as required -- yes, really -- by ANSI;
+ ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
+ on malformed property lists;
+
+changes in sbcl-0.7.13 relative to sbcl-0.7.12:
+ * incompatible packaging change: in line with Unix convention,
+ SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
+ if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
+ * REQUIRE and PROVIDE are now optionally capable of doing something
+ useful. See the documentation string for REQUIRE.
+ * infrastructure for a managed SBCL contrib system: contributed
+ modules in this release include:
+ ** the ASDF system definition facility;
+ ** an interface to the BSD Sockets API;
+ ** an ACL-like convenience interface to the repl;
+ (thanks to Kevin Rosenberg)
+ ** an implementation of ROTATE-BYTE, with efficient implementation
+ on x86 hardware;
+ * fixed a bug in LOG, so that LOG of a rational argument near 1 now
+ gives a closer approximation to the right answer than previously.
+ (thanks to Raymond Toy)
+ * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
+ UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
+ optional environment arguments, as required by ANSI.
+ * fixed bugs in other functions taking environment objects, allowing
+ calls with an explicit NIL environment argument to be compiled
+ without error.
+ * fixed bug 228: primary return values from
+ FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
+ COMPILE or FUNCTION.
+ * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
+ :TYPE will no longer signal errors on innocuous objects.
+ * fixed bug 231b: SETQ is better at respecting type declarations in
+ the lexical environment.
+ * fixed a bug in DEFCLASS: classes named by symbols with no or
+ unprintable packages can now be defined.
+ * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
+ carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
+ * fixed compiler failure related to checking types of functions.
+ (reported by Robert E. Brown)
+ * the compiler is now much more consistent in its error-checking
+ treatment of bounding index arguments to sequence functions: in
+ (SAFETY 3) code, errors will be signalled in almost all cases if
+ invalid sequence bounding indices are passed to functions defined
+ by ANSI to operate on sequences.
+ * fixed a bug in the build procedure: documentation of SBCL-specific
+ packages is now preserved and available in the final Lisp image.
+ * lifted FDEFINITION lookup out of loops in the implementation of
+ many list operations. (thanks to Robert E. Brown)
+ * fixed a bug in the reader: the #n# reader macro now works for
+ objects of type STANDARD-OBJECT. (reported by Tony Martinez)
+ * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
+ and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
+ E. Brown and Tony Martinez respectively)
+ * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
+ SLOT-BOUNDP: in particular, it is now able to optimize them much
+ better, and is now not vulnerable to having packages renamed.
+ Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
+ always called when a slot is not present in an instance. (thanks
+ to Gerd Moellmann)
+ * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
+ longer signal an error on unreading a character following EOF on
+ the previous constituent stream. (thanks to Tony Martinez)
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
+ not just nonnegative fixnums;
+ ** the logical bit-array operators such as BIT-AND now accept an
+ explicit NIL for their "opt-arg" argument (to indicate a
+ freshly-consed result bit-array);
+ ** ELT now signals an error on an invalid sequence index in safe
+ code;
+ ** the type system is now cleverer about negations of numeric
+ types, and consequently understands the BIGNUM and RATIO types
+ better;
+ ** the type system is now cleverer about the interaction between
+ INTEGER and RATIO types: while bugs still remain, many more
+ cases are accurately computed;
+ ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
+ if it is in the last clause;
+ ** CONSTANTLY now correctly returns a side-effect-free function in
+ all cases;
+ ** DECLARE is no longer treated as a special-operator; in
+ particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
+ * incremented fasl file version number due to the change in the
+ DEFSTRUCT-SLOT-DESCRIPTION structure.
-* The system has been ported to OpenBSD.
-* The system now compiles with a simple "sh make.sh" on the systems
- that it's supported on. I.e., now you no longer need to tweak
- text in the target-features.lisp-expr and symlinks in src/runtime/
- by hand, the make.sh takes care of it for you.
-* The system is no longer so grossly inefficient when compiling code
- involving vectors implemented as general (not simple) vectors (VECTOR T),
- so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
- which dares to use the various sequence functions on non-simple
- vectors, takes less of a performance hit.
- * There is now a primitive type predicate VECTOR-T-P
- to test for the (VECTOR T) type, so that e.g.
- (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
- can now be compiled with some semblance of efficiency. (The old code
- turned the type declaration into a full call to %TYPEP at runtime!)
- * AREF on (VECTOR T) is still not fast, since it's still compiled
- as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
- ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
- efficiently. (The old version made full calls to SUBTYPEP at runtime!)
- * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
- without making full calls to SUBTYPEP at runtime.
- (Some analogous efficiency issues for non-simple vectors specialized to
- element types other than T, or for non-simple multidimensional arrays,
- have not been addressed. They could almost certainly be handled the
- same way if anyone is motivated to do so.)
-* The changes in array handling break binary compatibility, so
- *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
-* (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
- instead of (VALUES T T).
-* By following the instructions that Dan Barlow posted to sbcl-devel
- on 2 July 2000, I was able to enable primitive dynamic object
- file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
- functionality is not implemented (since it calls ld to resolve
- library references automatically, requiring RUN-PROGRAM for its
- implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
- try to resolve library references) is now supported.
-* The system now flushes the standard output streams when it terminates,
- unless QUIT is used with the RECKLESSLY-P option set. It also flushes
- them at several other probably-convenient times, e.g. in each pass of
- the toplevel read-eval-print loop, and after evaluating a form given
- as an "--eval" command-line option. (These changes were motivated by a
- discussion of stream flushing issues on cmucl-imp in August 2000.)
-* The source transform for TYPEP of array types no longer assumes
- that an array whose element type is a not-yet-defined type
- is implemented as an array of T, but instead punts, so that the
- type will be interpreted at runtime.
-* There is now some support for cross-compiling in make.sh: each of
- the phases of make.sh has its own script. (This should be transparent
- to people doing ordinary, non-cross-compile builds.)
-* Since my laptop doesn't have hundreds of megabytes of memory like
- my desktop machine, I became more motivated to do some items on
- my to-do list in order to reduce the size of the system a little:
- ** Arrange for various needed-only-at-cold-init things to be
- uninterned after cold init. To support this, those things have
- been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
- symbols with such names are now uninterned after cold init).
- ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
- fasl files for cold load.
- ** Remove the old compiler structure pooling code (which used to
- be conditional on the target feature :SB-ALLOC) completely.
- ** Redo the representation of some data in cold init to be more compact.
- (I also looked into supporting byte compiled code at bootstrap time,
- which would probably reduce the size of the system a lot, but that
- looked too complicated, so I punted for now.)
-* The maximum signal nesting depth in the src/runtime/ support code has
- been reduced from 4096 to 256. (I don't know any reason for the very
- large old value. If the new smaller value turns out to break something,
- I'll probably just bump it back up.)
-* PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
- as per ANSI.
-* Many, many bugs reported by Peter Van Eynde have been added to
- the BUGS list; some have even been fixed.
-* While enabling dynamic object file loading, I tried to make the
- code easier to understand, renaming various functions and variables
- with less ambiguous names, and changing some function calling
- conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
-* While trying to figure out how to do the OpenBSD port, I tried to
- clean up some of the code in src/runtime/. In particular, I dropped
- support for non-POSIX signal handling, added various comments,
- tweaked the code to reduce the number of compilation warnings, and
- renamed some files to increase consistency.
-* To support the new automatic configuration functionality in make.sh,
- the source file target-features.lisp-expr has been replaced with the
- source file base-target-features.lisp-expr and the machine-generated
- file local-target-features.lisp-expr.
-* fixed a stupid quoting error in make.sh so that using CMU CL
- "lisp -batch" as cross-compilation host works again
+changes in sbcl-0.7.12 relative to sbcl-0.7.11:
+ * minor incompatible change: code processed by the "interpreter" or
+ EVAL now has a compilation optimization policy of (DEBUG 2)
+ (changed from (DEBUG 1)) to improve debuggability of interactive
+ development, and to allow the use of the debug RETURN command in
+ such code.
+ * an experimental implementation of the RETURN command for the
+ debugger has been included. (thanks to Frederik Kuivinen)
+ * fixed bug 62: constraints were not propagated into a loop.
+ * fixed bug in embedded calls of SORT (reported and investigated by
+ Wolfgang Jenkner).
+ * fixed some bugs revealed by Paul Dietz' test suite:
+ ** printing and reading of arrays with some dimensions having
+ length 0 (thanks to Gerd Moellmann);
+ ** BOA constructor with &AUX argument without a default value does
+ not cause a type error;
+ ** CONSTANTP now returns true for all self-evaluating objects.
-changes in sbcl-0.6.8 relative to sbcl-0.6.7:
+changes in sbcl-0.7.11 relative to sbcl-0.7.10:
+ * fixed bug 127: DEFSTRUCT now does not clobber old structure
+ accessors that are related by inheritance, as specified in the
+ :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
+ Valtteri Vuorikoski)
+ * The compiler is now able to inline functions that were defined in
+ a complex lexical environment (e.g. inside a MACROLET).
+ * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
+ to Lutz Euler)
+ * Support for the upcoming FreeBSD-5.0 release has been included.
+ (thanks to Dag-Erling Smorgrav)
+ * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
+ effect when it is not in a toplevel context.
+ * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
+ stand a better chance of being correct. (thanks to Gerd
+ Moellmann)
+ * fixed bug in COERCE, which now signals an error on coercing a
+ rational to a bounded real type which excludes the expected
+ answer.
+ * The compiler is now able to derive types more accurately from the
+ COERCE and COMPILE functions.
+ * fixed bug 223: functional binding is considered to be constant
+ only for symbols in the CL package.
+ * fixed bug 231: SETQ did not check the type of a variable being set
+ (reported by Robert E. Brown)
+ * A new optimization for MAKE-INSTANCE has been included, fixing
+ various bugs (including relating to :ALLOCATION :CLASS slots and
+ :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
+ Moellmann)
+ * fixed some LOOP bugs revealed by Paul Dietz' test suite:
+ ** As required by ANSI, LOOP now disallows anonymous collection
+ clauses such as COLLECT I in conjunction with aggregate boolean
+ clauses such as THEREIS (= I 1);
+ ** LOOP now signals an error when any variable is reused in the
+ same loop (including the potentially useful construct analogous
+ to WITH A = 1 WITH A = (1+ A);
+ ** IT is only a special loop symbol within the first clause of a
+ conditional loop clause;
+ ** LOOP with a typed iteration variable over a hashtable now
+ signals a type error iff it should.
+ * fixed some other bugs revealed by Paul Dietz' test suite:
+ ** FILE-STREAM now names the class previously known as FD-STREAM;
+ ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
+ argument) no longer signals an error;
+ ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
+ of the slot symbol, rather than using the current package
+ ((:CONC-NAME "") continues to intern the slot's name in the
+ current package);
+ * incremented fasl file version number, because of the incompatible
+ change to the DEFSTRUCT-DESCRIPTION structure, and again because
+ of the new implementation of DEFINE-COMPILER-MACRO.
-* The system is now under CVS at SourceForge (instead of the
- CVS repository on my home machine).
-* The new signal handling code has been tweaked to treat register
- contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
- instead of (SIGNED-BYTE 32), as the C header files have it. (Code
- downstream, e.g. in debug-int.lisp, has implicit dependencies
- on the unsignedness of integer representation of machine words,
- and that caused the system to bomb out with infinite regress
- when trying to recover from type errors involving signed values,
- e.g. (BUTLAST '(1 2 3) -1).)
-* (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
- (This was one of the bugs Peter Van Eynde reported back in July.)
-* The system now uses code inspired by Colin Walters' O(N)
- implementation of MAP (from the cmucl-imp@cons.org mailing
- list, 2 September 2000) when it can't use a DEFTRANSFORM to
- inline the MAP operation, and there is more than one
- sequence argument to the MAP call (so that it can't just
- do ETYPECASE once and for all based on the type of the
- single sequence argument). (The old non-inline implementation
- of the general M-argument sequence-of-length-N case required
- O(M*N*N) time when any of the sequence arguments were LISTs.)
-* The QUIT :UNIX-CODE keyword argument has been renamed to
- QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
-* Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
- have been added.
-* Raymond Wiker's patches to port dynamic loading from Linux to
- FreeBSD have been added.
-* The BUGS file is now more nearly up to date, thanks in large part
- to Martin Atzmueller's review of it.
-* The debugger now flushes standard output streams before it begins
- its output ("debugger invoked" and so forth).
-* The core version number and fasl file version number have both
- been incremented, because of incompatible changes in the layout
- of static symbols.
-* FINISH-OUTPUT is now called more consistently on QUIT. (It
- used to not be called for a saved Lisp image.)
-* Martin Atzmueller's version of a patch to fix a compiler crash,
- as posted on sbcl-devel 13 September 2000, has been installed.
-* Instead of installing Martin Atzmueller's patch for the
- compiler transform for SUBSEQ, I deleted the compiler transform,
- and transforms for some similar consing operations.
-* A bug in signal handling which kept TRACE from working on OpenBSD
- has been fixed.
-* added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
- away by constant folding
-* The system now defines its address space constants in one place
- (in the Lisp sources), and propagates them automatically elsewhere
- (through GENESIS and the sbcl.h file). Therefore, patching the
- address map is less unnecessarily tedious and error-prone. The
- Lisp names of address space constants have also been systematized.
-* CVS tags like dollar-Header-dollar have been removed from
- the sources, because they have never saved me trouble and
- they've been source of trouble working with patches and other
- diff-related operations.
-* fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
- ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
+changes in sbcl-0.7.10 relative to sbcl-0.7.9:
+ * Support for building SBCL for MIPS platforms running in
+ little-endian mode has now been checked in, and basic
+ functionality on said platforms verified.
+ * minor incompatible change: PCL now records the pathname of a file
+ in which methods and the like are defined, rather than its
+ truename.
+ * minor incompatible change: TRUENAME now considers the truename of
+ a file naming a directory to be the pathname with :DIRECTORY
+ component indicating that directory.
+ * minor incompatible change: a NAMED clause in the extended form of
+ LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
+ reason for the previous behaviour is unclear.
+ * more systematization and improvement of CLOS and MOP conformance
+ in PCL (thanks to Gerd Moellman and Pierre Mai):
+ ** the standard ANSI CL generic function NO-NEXT-METHOD is now
+ implemented;
+ ** DEFINE-METHOD-COMBINATION no longer signals an error for
+ primary methods with no specializers;
+ ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
+ implemented;
+ ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
+ and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
+ FORWARD-REFERENCED-CLASSes; error reporting on
+ CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
+ has been improved;
+ ** SXHASH on CLOS instances now uses a slot internal to the
+ instance to return different numbers on distinct instances,
+ while preserving the same return value through invocations of
+ CHANGE-CLASS;
+ ** DEFMETHOD signals errors when methods with longer incongruent
+ lambda lists are added to generic functions;
+ ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
+ CLASS, as specified in AMOP;
+ ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
+ on the order returned by the primary method for classes of
+ class STANDARD-CLASS;
+ ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
+ * fixed some bugs shown by Paul Dietz' test suite:
+ ** DOLIST puts its body in TAGBODY;
+ ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
+ correct order;
+ ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
+ value producing form;
+ ** if more variables are given to PROGV than values, extra
+ variables are bound and made to have no value;
+ ** NSUBSTITUTE on list arguments gets the right answer with
+ :FROM-END;
+ ** ELT signals an error of type TYPE-ERROR when the index argument
+ is not a valid sequence index;
+ ** LOOP signals (at macroexpansion time) an error of type
+ PROGRAM-ERROR when duplicate variable names are found;
+ ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
+ ** FUNCALL of special-operators now cause an error of type
+ UNDEFINED-FUNCTION;
+ ** PSETQ now works as required in the presence of side-effecting
+ symbol-macro places;
+ ** NCONC accepts any object as its last argument;
+ ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
+ Gerd Moellman)
+ ** loop-for-as-package does not require a package to be explicitely
+ specified;
+ ** LOOP WITH now treats NIL in the d-var-spec correctly as an
+ ignored binding.
+ * fixed bug 166: compiler preserves "there is a way to go"
+ invariant when deleting code.
+ * fixed bug 172: macro lambda lists with required arguments after
+ &REST arguments now cause an error to be signalled. (thanks to
+ Matthew Danish)
+ * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
+ bug. (thanks to Matthew Danish)
+ * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
+ Baumann)
+ * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
+ arguments are lexically rebound. (thanks to Gerd Moellmann and
+ Pierre Mai)
+ * fixed bug 194: error messages are now more informative when there
+ is no primary method applicable in a call to a generic
+ function. (thanks to Gerd Moellmann)
+ * fixed bug in command line argument checking (thanks to Julian
+ Fondren)
+ * fixed bug in COUNT-IF, making it handle :FROM-END correctly
+ (thanks to Matthew Danish)
+ * incremented fasl file version number, because of the
+ SXHASH-related changes in the layout of CLOS data structures
-changes in sbcl-0.6.9 relative to sbcl-0.6.8:
+changes in sbcl-0.7.9 relative to sbcl-0.7.8:
+ * minor incompatible change: The runtime (the Unix executable named
+ "sbcl") is now much pickier about the .core files it will load.
+ Essentially it now requires .core files to descend from the same
+ build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
+ as the runtime does. (The intent is to prevent the crashes which
+ can occur, and which can even be reported as mysterious failures,
+ when people patch the sources or change the build parameters
+ without changing LISP-IMPLEMENTATION-VERSION, then mix and match
+ sbcl and .core files.)
+ * fixed bug: VALUES-LIST is no longer optimized away.
+ * fixed bug 142: The FFI conversion of C string values to Lisp
+ string values no longer conses excessively. (thanks to Nathan
+ Froyd porting Raymond Toy's fix to CMU CL)
+ * began to systematize and improve MOP conformance in PCL (thanks to
+ Nathan Froyd, Gerd Moellman and Pierre Mai):
+ ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
+ itself;
+ ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
+ ** FINALIZE-INHERITANCE is now called on class finalization;
+ ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
+ argument precedence order.
+ * fixed bug 202: The compiler no longer fails on functions whose
+ derived types contradict their declared type.
+ * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
+ so it can be non-toplevel.
+ * The fasl file version number has changed (because of the new
+ implementation of DEFMACRO).
+ * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
+ safe code, that any length requirement by their type-specifier
+ argument is valid. The exceptions to this are described in bug
+ 213.
+ * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
+ functions now check the types of their inputs as required by ANSI.
+ * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
+ introduced symbol is DECLAREd to be SPECIAL.
+ * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
+ * fixed bug: :COUNT argument to sequence functions may be negative
+ * fixed bug: body of DO-SYMBOLS may contain declarations
+ * fixed bug: PUSHNEW now evaluates its arguments from left to right
+ (reported by Paul F. Dietz, fixed by Gerd Moellman)
+ * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
+ symbol macro only once
+ * fixed printing of call frame when argument list is unavailable
+ * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
+ * compiler no longer signals WARNING on unknown keyword
+ :ALLOW-OTHER-KEYS
-* DESCRIBE now works on CONDITION objects.
-* The debugger now handles errors which arise when trying to print
- *DEBUG-CONDITION*, so that it's less likely to fall into infinite
- regress.
-* The build system now uses an additional file, customize-target-features.lisp,
- to allow local modifications to the target *FEATURES* list. (The point of
- this is that now I can set up a custom configuration, e.g. with :SB-SHOW
- debugging features enabled, without having to worry about propagating it
- into everyone's system when I do a "cvs update".) When no
- customize-target-features.lisp file exists, the target *FEATURES* list
- should be constructed the same way as before.
-* fixed bugs in DEFCONSTANT ANSI-compatibility:
- ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
- warn about behavior which is undefined under the ANSI spec. Note: This
- is specified by ANSI, but it's not very popular with programmers.
- If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
- macro in the SBCL sources for an example of a workaround which you
- might use to make portable ANSI-standard code which does what you want.
- ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
- pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
- when it's used as a non-toplevel form. (This is required in order
- to implement the DEFCONSTANT-EQX macro.)
- ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
- ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
- funny things, due to bugs in the implementation of EVAL-WHEN
- (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
- non-toplevel DEFCONSTANTs are uncommon.)
-* The core file version number and fasl file version number have been
- incremented, because the old noncompliant DEFCONSTANT behavior involved
- calling functions which no longer exist, and because I also took the
- opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
-* fixed bug 1 (error handling before read-eval-print loop starts), and
- redid debugger restarts and related debugger commands somewhat while
- doing so:
- ** The QUIT debugger command is gone, since it did something
- rather different than the SB-EXT:QUIT command, and since it never
- worked properly outside the main toplevel read/eval/print loop.
- Invoking the new TOPLEVEL restart provides the same functionality.
- ** The GO debugger command is also gone, since you can just invoke
- the CONTINUE restart directly instead.
- ** The TOP debugger command is also gone, since it's redundant with the
- FRAME 0 command, and since it interfered with abbreviations for the
- TOPLEVEL restart.
-* The system now recovers better from non-PACKAGE values of the *PACKAGE*
- variable.
-* The system now understands compound CONS types (e.g. (CONS FIXNUM T))
- as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
- some porting work by Martin Atzmueller)
-* Martin Atzmueller reviewed the CMU CL mailing lists and came back
- with a boatload of patches which he ported to SBCL. Now that those
- have been applied,
- ** The system tries to make sure that its low-priority messages
- are prefixed by semicolons, to help people who like to use
- syntax highlighting in their ILISP buffer. (This patch
- was originally due to Raymond Toy.)
- ** The system now optimizes INTEGER-LENGTH better, thanks to more
- patches originally written by Raymond Toy.
- ** The compiler understands coercion between single-value and
- multiple-VALUES type expressions better, getting rid of some very
- weird behavior, thanks to patches originally by Robert MacLachlan
- and Douglas Crosher.
- ** The system understands ANSI-style non-KEYWORD &KEY arguments in
- lambda lists, thanks to a patch originally by Pierre Mai.
- ** The system no longer bogusly warns about "abbreviated type
- declarations".
- ** The compiler gets less confused by inlining and RETURN-FROM,
- thanks to some patches originally by Tim Moore.
- ** The system no longer hangs when dumping circular lists to fasl
- files, thanks to a patch originally from Douglas Crosher.
-* Martin Atzmueller also fixed ROOM, so that it no longer fails with an
- undefined function error.
-* gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
- in structure slot initforms) for now, documented workaround instead:-|
-* fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
-* fixed bug 5: added stubs for various Gray stream functions called
- in the not-a-CL:STREAM case, so that even when Gray streams aren't
- installed, at least appropriate type errors are generated
-* fixed bug 8: better reporting of various PROGRAM-ERRORs
-* fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
- consistently in DEFMETHOD forms.
-* removed bug 21 from BUGS, since Martin Atzmueller points out that
- it doesn't seem to affect SBCL after all
-* The C runtime system now builds with better optimization and many
- fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
+changes in sbcl-0.7.8 relative to sbcl-0.7.7:
+ * A beta-quality port to the mips architecture running Linux,
+ based on the old CMUCL backend, has been made. It has been tested
+ on a big-endian kernel, and works sufficiently well to be able to
+ rebuild itself; it has not been tested in little-endian mode.
+ * fixed an inconsistency between gencgc.c and purify.c which made
+ dumping/loading .core files unreliable
+ * fixed bug 120a: The compiler now deals correctly with IFs where
+ the consequent is the same as the alternative, instead of
+ misderiving the return type. (thanks to Alexey Dejneka)
+ * fixed bug 113: Logical pathnames are now dumpable (the logical
+ host is resolved at load-time, throwing an error if it is not
+ found).
+ * fixed bug 174: FORMAT's error message is slightly clearer when a
+ non-printing character is used in a format directive.
+ * fixed several bugs in compiler checking of type declarations, i.e.
+ violations of the Python "declarations are assertions" principle
+ (thanks to Alexey Dejneka)
+ * fixed several bugs in PCL's error checking (thanks to Gerd
+ Moellmann)
+ * fixed bug: printing of FILE-ERROR (thanks to Antonio
+ Martinez-Shotton)
+ * fixed bug in compilation of functions as first class values
+ (thanks to Antonio Martinez-Shotton)
+ * The compiler's handling TYPE-ERRORs which it can prove will
+ inevitably happen at runtime has been cleaned up and corrected
+ in several ways. (thanks to Alexey Dejneka)
+ * improved argument type checking for various basic arithmetic
+ operations (MAX, +, LOGXOR, etc.) which have had so much TLC
+ lavished on them in the past that they can be compiled in many
+ ways in different special cases
+ * fixed bug 181: compiler checks validity of user supplied type
+ specifiers
+ * cleaned up code flushing in optimization: Function calls which
+ should signal errors for safety purposes (e.g. which ANSI says
+ should signal errors when their arguments are of incorrect type)
+ are no longer optimized away.
+ * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
+ * incremented fasl file version number, because changes in the
+ implementation of sequence functions like COERCE caused
+ internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
+ in old inline expansions) to become undefined. (Actually these
+ changes were later undone, so we might very well be binary
+ compatible with 0.7.7 after all, but leaving the version number
+ incremented seemed like the simplest and most conservative
+ thing to do.)
+
+changes in sbcl-0.7.7 relative to sbcl-0.7.6:
+ * An alpha-quality port to the parisc architecture running Linux,
+ based on the old CMUCL backend, has been made. This, even more so
+ than the other backends, should be considered still a work in
+ progress; known problems include that the Linux kernel in 64-bit
+ mode does not propagate the correct sigcontext structure to
+ userspace, and consequently SBCL on a parisc64 kernel will not
+ work yet.
+ * fixed bug 189: The compiler now respects NOTINLINE declarations for
+ functions declared in FLET and LABELS. (I.e. "LET conversion" is
+ suppressed.) Also now that the compiler is looking at declarations
+ in the environment, it checks optimization declarations as well,
+ and suppresses inlining when (> DEBUG SPEED).
+ * More fixes have been made to treatment of floating point exception
+ treatment and other Unix signals. In particular, floating point
+ exceptions no longer cause Bus errors on the SPARC/Linux platform.
+ * The detection and handling of control stack exhaustion (infinite
+ or very deeply nested recursion) has changed. Stack exhaustion
+ detection is now done by write-protecting pages at the OS level
+ and applies at all optimization settings; when found, a
+ SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
+ STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
+ be caught using IGNORE-ERRORS.
+ * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
+ correctly when transforming recursive LABELS functions to LETs.
+ (thanks to Alexey Dejneka)
+ * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
+ that are names of constants or global variables.
+ * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
+ alien routines with docstrings.
+ * Bug 184 fixed: Division of ratios by the integer 0 now signals an
+ error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
+ Raymond Toy)
+ * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
+ (thanks to Eric Marsden)
+ * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
+ object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
+ * Bug fix: The SPARC backend can now compile functions involving
+ LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
+ * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
+ to a functions expecting a PATHNAME-DESIGNATOR.
+ * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
+ lambda lists. (thanks to Alexey Dejneka)
+ * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
+ functions so that EXPORTing the name of the class doesn't cause
+ MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
+ to Antonio Martinez for reporting this)
+ * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
+ constant-folded without failing an assertion. (thanks to Einar
+ Floystad Dorum for reporting this)
+ * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
+ types are now dealt with more correctly by the compiler.
+ * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
+ OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
+ behaviour analogous to RENAME-FILE. This puts its behaviour more
+ in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
+ Marco Antinotti)
+ * The fasl file version number has changed again. (because of the
+ bug fix involving the names of PCL MAKE-INSTANCE functions)
-changes in sbcl-0.6.10 relative to sbcl-0.6.9:
+changes in sbcl-0.7.6 relative to sbcl-0.7.5:
+ * bug fix: Floating point exceptions are treated much more
+ consistently on the x86/Linux and PPC/Linux platforms.
+ * Array initialization with :INITIAL-ELEMENT is now much faster for
+ cases when the compiler cannot open code the array creation, but
+ does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
+ array accesses have also seen a speed increase.
+ * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
+ specified. (This was at the root of some bad interactions between
+ SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
+ reporting the bug.)
+ * bug fix: Internal error arguments for undefined functions are now
+ computed correctly on the PPC/Linux platform.
+ * bug fix: Bad &REST syntax is now checked correctly. (thanks to
+ Raymond Toy's patch for CMU CL)
+ * Support for the Solaris 9 operating environment has been included
+ (thanks to Daniel Merritt)
+ * A very ugly but hopefully complete draft of the missing FFI chapter
+ of the manual has been created by reformatting the corresponding
+ CMU CL manual chapter into (currently very ugly and incoherent)
+ DocBook and bringing it up to date for SBCL behavior. Thus, the
+ manual is now essentially complete, at least by my extreme
+ once-and-only-once standards, whereby it's acceptable to refer to
+ the doc strings of SB-EXT functions as the primary documentation.
+ * The fasl file version number has changed again, due to cleanup of
+ (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
+ is no longer a static symbol.)
-* A patch from Martin Atzmueller seems to have solved the SIGINT
- problem, and as far as we know, signal-handling now works cleanly.
- (If you find any new bugs, please report them!)
-* The system no longer defaults Lisp source file names to types
- ".l", ".cl", or ".lsp", but only to ".lisp".
-* The compiler no longer uses special default file extensions for
- byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
- seems to expect a single default extension for all compiled code,
- and there's no compelling reason to try to stretch the standard
- to allow two different extensions.) Instead, byte-compiled files
- default to the same extension as native-compiled files.
-* Fasl file format version numbers have increased again, because
- a rearrangement of internal implementation packages made some
- dumped symbols in old fasl files unreadable in new cores.
-* DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
- many fewer weird special cases.
-* Bug #17 (differing COMPILE-FILE behavior between logical and
- physical pathnames) has been fixed, and some related misbehavior too,
- thanks to a patch from Martin Atzmueller.
-* Bug #30 (reader problems) is gone, thanks to a CMU CL patch
- by Tim Moore, ported to SBCL by Martin Atzmueller.
-* Martin Atzmueller fixed several filesystem-related problems,
- including bug #36, in part by porting CMU CL patches, which were
- written in part by Paul Werkowski.
-* More compiler warnings in src/runtime/ are gone, thanks to
- more patches from Martin Atzmueller.
-* Martin Atzmueller pointed out that bug 37 was fixed by his patches
- some time ago.
+changes in sbcl-0.7.5 relative to sbcl-0.7.4:
+ * SBCL now builds with OpenMCL (version 0.12) as the
+ cross-compilation host; also, more progress has been made toward
+ bootstrapping under CLISP.
+ * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
+ Alpha architecture.
+ * bug 158 fixed: The compiler can now deal with integer loop
+ increments different from 1; fixing this turned out also to fix
+ bug 164.
+ * bug 169 fixed: no more bogus warnings about using lexical bindings
+ despite the presence of perfectly good SPECIAL declarations (thanks
+ to David Lichteblau)
+ * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
+ accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
+ * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
+ characters in them.
+ * bug 180 fixed: Method combination specifications no longer ignore
+ the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
+ * bug fix: Structure type predicate functions now check their argument
+ count as they should.
+ * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
+ correctly. (thanks to Pierre Mai)
+ * minor incompatible change: The --noprogrammer option is deprecated
+ in favor of the new --disable-debugger option, which is very similar.
+ (The major difference is that it takes effect at a slightly different
+ time at startup, causing handling of errors in --sysinit and
+ --userinit files will be affected differently.) The
+ SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
+ been added to allow this functionality to be controlled from ordinary
+ Lisp code. (ENABLE-DEBUGGER should help people like the Debian
+ maintainers, who might want to run non-interactive scripts to
+ build SBCL cores which will later be used interactively.)
+ * minor incompatible change: The LOAD function no longer, when given
+ a wild pathname to load, loads all files matching that pathname.
+ Instead, an error of type FILE-ERROR is signalled.
-changes in sbcl-0.6.11 relative to sbcl-0.6.10:
-* Martin Atzmueller pointed out that bugs #9 and #25 are gone in
- current SBCL.
-* bug 34 fixed by Martin Atzmueller: dumping/loading instances works
- better
-* fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
- and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
- types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
-* DESCRIBE now works on structure objects again.
-* Most function call argument type mismatches are now handled as
- STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
- know whether the function will be redefined before the call is
- executed. (The compiler could flag local calls with full WARNINGs,
- as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
- it doesn't keep track of enough information to know whether calls
- are local in this sense.)
-* Compiler output is now more verbose, with messages truncated
- later than before. (There should be some supported way for users
- to override the default verbosity, but I haven't decided how to
- provide it yet, so this behavior is still controlled by the internal
- SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
- src/compiler/ir1util.lisp.)
-* Fasl file format version numbers have increased again, because
- support for the Gray streams extension changes the layout of the
- system's STREAM objects.
-* The Gray subclassable streams extension now works, thanks to a
- patch from Martin Atzmueller.
-* The full LOAD-FOREIGN extension (not just the primitive
- LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
-* The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
- but like most other programs, it defaults to copying the Unix
- environment from the original process instead of starting the
- new process in an empty environment.
-* Extensions which manipulate the Unix environment now support
- an :ENVIRONMENT keyword option which doesn't smash case or
- do other bad things. The CMU-CL-style :ENV option is retained
- for porting convenience.
-* LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
- as per Daniel Barlow's suggestion and Martin Atzmueller's patch
+changes in sbcl-0.7.4 relative to sbcl-0.7.3:
+ * bug 147 fixed: The compiler preserves its block link/count
+ invariants more correctly now so that it doesn't crash. (thanks
+ to Alexey Dejneka)
+ * Dynamic loading of object files in OpenBSD is now supported. (thanks
+ to Pierre Mai)
+ * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
+ * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
+ no-value-for-this-character as NIL (as specified by ANSI).
+ * HOST-NAMESTRING on physical pathnames now returns a string that is
+ valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
+ (thanks to Christophe Rhodes)
+ * The Alpha port handles icache flushing more correctly. (thanks to
+ Dan Barlow)
+ * More progress has been made toward bootstrapping under CLISP. (thanks
+ to Christophe Rhodes)
+ * The fasl file format has changed again, because dynamic loading
+ on OpenBSD (which has non-ELF object files) motivated some cleanups
+ in the way that foreign symbols are transformed and passed around.
+ * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
+ is no longer treated as whitespace by the reader, but instead as
+ an ordinary character. Thus e.g. (READ-FROM-STRING "A\7fB") returns
+ |A\7fB|, instead of A as it used to.
-changes in sbcl-0.6.12 relative to sbcl-0.6.11:
-* incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
- is no longer recognized. I apologize for this, because it was
- listed in SB-EXT as a supported extension, but I found that
- its existing behavior was poorly specified, as well as incorrectly
- specified, and it looked like too much of a mess to straighten it
- out. I have enough on my hands trying to get ANSI stuff to work..
-* many patches ported from CMU CL by Martin Atzmueller, with
- half a dozen bug fixes in pretty-printing and the debugger, and
- half a dozen others elsewhere
-* fixed bug 13: Floating point infinities are now supported again.
- They might still be a little bit flaky, but thanks to bug reports
- from Nathan Froyd and CMU CL patches from Raymond Toy they're not
- as flaky as they were.
-* The --noprogrammer command line option is now supported. (Its
- behavior is slightly different in detail from what the old man
- page claimed it would do, but it's still appropriate under the
- same circumstances that the man page talks about.)
-* The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
- are now supported, and enabled by default. Thus, the compiler can
- handle many floating point and complex operations much less
- inefficiently. (Thus e.g. you can implement a complex FFT
- without consing!)
-* The compiler now detects type mismatches between DECLAIM FTYPE
- and DEFUN better, and implements CHECK-TYPE more correctly, and
- SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
- thanks to patches from Martin Atzmueller.
-* various fixes to make the cross-compiler more portable to
- ANSI-conforming-but-different cross-compilation hosts (notably
- Lispworks for Windows, following bug reports from Arthur Lemmens)
-* A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
- ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
- fixed thanks to Pierre Mai's CMU CL patches.
-* fixes to keep the system from overflowing internal counters when
- it tries to use i/o buffers larger than 16M bytes
-* fixed bug 45a: Various internal functions required to support
- complex special functions have been merged from CMU CL sources.
- (When I was first setting up SBCL, I misunderstood a compile-time
- conditional #-OLD-SPECFUN, and so accidentally deleted them.)
-* improved support for type intersection and union, fixing bug 12
- (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
- more obscure bugs as well
-* some steps toward byte-compiling non-performance-critical
- parts of the system, courtesy of patches from Martin Atzmueller
-* Christophe Rhodes has made some debian packages of sbcl at
- <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
- From his sbcl-devel e-mail of 2001-04-08 they're not completely
- stable, but are nonetheless usable. When he's ready, I'd be happy
- to add them to the SourceForge "File Releases" section. (And if
- anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
-* new fasl file format version number (because of changes in
- internal representation of (OR ..) types to accommodate the new
- support for (AND ..) types, among other things)
+changes in sbcl-0.7.3 relative to sbcl-0.7.2:
+ * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
+ Froyd porting CMU CL code originally by Douglas Thomas Crosher)
+ * SBCL now runs on the PPC archtiecture under Linux. It actually did
+ this as of 0.7.1.45, but was left out of the previous news section
+ (thanks to Dan Barlow)
+ * SBCL now runs on the Solaris operating system on SPARC architectures
+ (thanks to Christophe Rhodes's port of the CMUCL runtime)
+ * cleanups to the runtime on SPARC, both Linux and Solaris, and for
+ gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
+ * SPARC backend cleanups, allowing builds of cores optimized for V8
+ and V9 SPARCS, and also emission of code targeted to a particular
+ backend chosen at runtime (thanks to Christophe Rhodes and Raymond
+ Toy)
+ * SBCL is closer to bootstrapping under CLISP, thanks to various
+ fixes by Christophe Rhodes.
+ * The fasl file format has changed again, to allow the compiler's
+ INFO database to support symbol macros.
+ * The user manual (in doc/) is formatted into HTML more nicely.
+ (thanks to coreythomas)
+ * The system is smarter about SUBTYPEP relationships, especially
+ those involving NOT types (including types such as ATOM which are
+ represented internally using NOT types). Thus SUBTYPEP is less
+ likely to return (VALUES NIL NIL) in general, and in particular
+ bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
+ Christophe Rhodes)
+ * The fasl file format has changed again, because the internal
+ representation of types now includes a new slot to support the new
+ SUBTYPEP-of-NOT-types logic.
+ * (not a change in the main branch of SBCL, but a related prototype
+ which can hopefully be merged into the main branch of SBCL in the
+ future:) Brian Spilsbury has produced a Unicode-enabled variant of
+ sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
+ <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
+ * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
+ dispatch macro character combinations. (thanks to Alexey Dejneka)
+ * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
+ that superficially look like logical namestrings correctly.
+ * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
+ can deal with.
+ * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
+ default supplied-p) for &optional and &key arguments. (thanks to
+ Martin Atzmueller)
-changes in sbcl-0.6.13 relative to sbcl-0.6.12:
-* a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
-* Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
- patch, so that DISASSEMBLE output is much nicer.
-* The code in the SB-PROFILE package now seems reasonably stable.
- I still haven't decided what the final interface should look like
- (I'd like PROFILE to interact cleanly with TRACE, since both
- facilities use function encapsulation) but if you have a need
- for profiling now, you can probably use it successfully with
- the current CMU-CL-style interface.
-* Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
- ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
- Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
- link now returns the dangling link itself, and for similar
- reasons, TRUENAME on a cyclic symbolic link returns the cyclic
- link itself. (In these cases the old code signalled an error and
- looped endlessly, respectively.) Thus, DIRECTORY now works even
- in the presence of dangling and cyclic symbolic links.
-* Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
- is now a supported extension again, since the consensus on
- sbcl-devel was that it can be useful for ordinary development
- work, not just for debugging SBCL itself.
-* The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
- NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
- that currently-defined functions might be redefined later with
- different return types.
-* Hash tables can be printed readably, as inspired by CMU CL code
- of Eric Marsden and SBCL code of Martin Atzmueller.
-* better error handling in CLOS method combination, thanks to
- Martin Atzmueller porting Pierre Mai's CMU CL patches
-* more overflow fixes for >16Mbyte I/O buffers
-* A bug in READ has been fixed, so that now a single Ctrl-D
- character suffices to cause end-of-file on character streams.
- In particular, now you only need one Ctrl-D at the command
- line (not two) to exit SBCL.
-* fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
- undisplaced arrays.
-* fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
- comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
- does the right thing.
-* The implementation of some type tests, especially for CONDITION
- types, is now tidier and maybe faster, due to CMU CL code
- originally by Douglas Crosher, ported by Martin Atzmueller.
-* Some math functions have been fixed, and there are new
- optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
- thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
-* (There are also some new optimizers in contrib/*-extras.lisp. Those
- aren't built into sbcl-0.6.13, but are a sneak preview of what's
- likely to be built into sbcl-0.7.0.)
-* A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
- CL, ported to SBCL by Martin Atzmueller)
-* DESCRIBE now gives more information in some cases. (Pierre Mai's
- patch to CMU CL, ported to SBCL by Martin Atzmueller)
-* Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
-* There's a new slam.sh hack to shorten the edit/compile/debug
- cycle for low-level changes to SBCL itself, and a new
- :SB-AFTER-XC-CORE target feature to control the generation of
- the after-xc.core file needed by slam.sh.
-* minor incompatible change: The ENTRY-POINTS &KEY argument to
- COMPILE-FILE is no longer supported, so that now every function
- gets an entry point, so that block compilation looks a little
- more like the plain vanilla ANSI section 3.2.2.3 scheme.
-* minor incompatible change: SB-EXT:GET-BYTES-CONSED now
- returns the number of bytes consed since the system started,
- rather than the number consed since the first time the function
- was called. (The new definition parallels ANSI functions like
- CL:GET-INTERNAL-RUN-TIME.)
-* minor incompatible change: The old CMU-CL-style DIRECTORY options,
- i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
- supported. Now DIRECTORY always does the abstract Common-Lisp-y
- thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
-* Fasl file version numbers are now independent of the target CPU,
- since historically most system changes which required version
- number changes have affected all CPUs equally. Similarly,
- the byte fasl file version is now equal to the ordinary
- fasl file version.
+changes in sbcl-0.7.2 relative to sbcl-0.7.1:
+ * incompatible change: The compiler is now less aggressive about
+ tail call optimization, doing it only when (> SPACE DEBUG) or
+ (> SPEED DEBUG). (This is an incompatible change because there are
+ programs which relied on the old CMU-CL-style behavior to optimize
+ away their unbounded recursion which will now die of stack overflow.)
+ * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
+ for non-GENCGC systems has been increased to 20M (since that
+ seems much closer to the likely performance optimum for modern
+ systems than the old 4M value was)
+ * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
+ and *DEBUG-PRINT-LEVEL*
+ * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
+ of CMU CL's support for SPARC, and various endianness and other
+ SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
+ * new syntactic sugar for the Unix command line: --load foo.bar is now
+ an alternate notation for --eval '(load "foo.bar")'.
+ * bug fixes:
+ ** The system now detects stack overflow and handles it gracefully,
+ at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
+ optimization settings. (This is a good thing in general, and
+ its introduction in this version should be particularly timely
+ for anyone whose code fails because of suppression of tail
+ recursion!)
+ ** The system now hunts for the C variable "environ" in a more
+ devious way, to avoid segfaults when the C library version differs
+ between compile time and run time. (thanks to Christophe Rhodes)
+ ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
+ and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
+ ** The compiler no longer issues bogus style warnings for undefined
+ classes in the same source file as the DEFCLASSes which defined
+ them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
+ for fixing this)
+ ** fixes in CONDITION class precedence list for undefined function
+ errors (thanks to Alexei Dejneka)
+ ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
+ correctly. (thanks to Dan Barlow)
+ ** portability fixes aiming at bootstrapping under CLISP (thanks
+ to Dave McDonald and Christophe Rhodes)
+ ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
+ ** fixes in type translation and and type inference (thanks to
+ Christophe Rhodes)
+ ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
+ ** various fixes in the new ports (thanks to Dan Barlow)
+ * several changes related to debugging:
+ ** suppression of tail recursion, as noted above
+ ** stack overflow detection, as noted above
+ ** The default implementation of TRACE has changed. :ENCAPSULATE T
+ is now the default. (For some time encapsulation has been more
+ reliable than the breakpoint-based :ENCAPSULATE NIL
+ implementation, at least on X86 systems; and I just noticed that
+ encapsulation also seems closer to the spirit of the ANSI
+ specification.)
+
+changes in sbcl-0.7.1 relative to sbcl-0.7.0:
+* mostly bug fixes:
+ ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
+ up properly again. (There was a packaging bug in 0.7.0 which
+ left their definitions in SB-SYS::LOAD-FOREIGN and
+ SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
+ vital for most things which interface to C-level interfaces,
+ like extensions working with sockets or databases or
+ Perl-compatible regexes or whatever, and the need to fix
+ this bug is the main reason that 0.7.1 was released so
+ soon after 0.7.0.)
+ ** DEFGENERIC is now choosier about the methods it redefines, so that
+ reLOADing a previously-LOADed file containing DEFGENERICs does
+ the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
+ cycle now works as it should. (thanks to Alexey Dejneka)
+ ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
+ fixed by Christophe Rhodes. (He actually submitted this patch
+ months ago, and I delayed until after 0.7.0.)
+ ** Bug 111 (internal compiler confusion about runtime checks on
+ FUNCTION types) was fixed by Alexey Dejneka.
+* Some internal cleanups (getting rid of variables which aren't
+ needed now that the byte interpreter is gone) caused the fasl
+ file format number to change again.
changes in sbcl-0.7.0 relative to sbcl-0.6.13:
* major incompatible change: The default fasl file extension, i.e. the
SourceForge has shut down its anonymous FTP service, and with it
my original plan for distributing the old CMU CL documentation
there. For now, if you need these files you can download an old
- SBCL source release and extract them from it.
-* The fasl file version number changed again, for dozens of reasons,
- some of which are apparent above.
-
-changes in sbcl-0.7.1 relative to sbcl-0.7.0:
-* mostly bug fixes:
- ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
- up properly again. (There was a packaging bug in 0.7.0 which
- left their definitions in SB-SYS::LOAD-FOREIGN and
- SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
- vital for most things which interface to C-level interfaces,
- like extensions working with sockets or databases or
- Perl-compatible regexes or whatever, and the need to fix
- this bug is the main reason that 0.7.1 was released so
- soon after 0.7.0.)
- ** DEFGENERIC is now choosier about the methods it redefines, so that
- reLOADing a previously-LOADed file containing DEFGENERICs does
- the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
- cycle now works as it should. (thanks to Alexey Dejneka)
- ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
- fixed by Christophe Rhodes. (He actually submitted this patch
- months ago, and I delayed until after 0.7.0.)
- ** Bug 111 (internal compiler confusion about runtime checks on
- FUNCTION types) was fixed by Alexey Dejneka.
-* Some internal cleanups (getting rid of variables which aren't
- needed now that the byte interpreter is gone) caused the fasl
- file format number to change again.
-
-changes in sbcl-0.7.2 relative to sbcl-0.7.1:
- * incompatible change: The compiler is now less aggressive about
- tail call optimization, doing it only when (> SPACE DEBUG) or
- (> SPEED DEBUG). (This is an incompatible change because there are
- programs which relied on the old CMU-CL-style behavior to optimize
- away their unbounded recursion which will now die of stack overflow.)
- * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
- for non-GENCGC systems has been increased to 20M (since that
- seems much closer to the likely performance optimum for modern
- systems than the old 4M value was)
- * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
- and *DEBUG-PRINT-LEVEL*
- * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
- of CMU CL's support for SPARC, and various endianness and other
- SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
- * new syntactic sugar for the Unix command line: --load foo.bar is now
- an alternate notation for --eval '(load "foo.bar")'.
- * bug fixes:
- ** The system now detects stack overflow and handles it gracefully,
- at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
- optimization settings. (This is a good thing in general, and
- its introduction in this version should be particularly timely
- for anyone whose code fails because of suppression of tail
- recursion!)
- ** The system now hunts for the C variable "environ" in a more
- devious way, to avoid segfaults when the C library version differs
- between compile time and run time. (thanks to Christophe Rhodes)
- ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
- and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
- ** The compiler no longer issues bogus style warnings for undefined
- classes in the same source file as the DEFCLASSes which defined
- them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
- for fixing this)
- ** fixes in CONDITION class precedence list for undefined function
- errors (thanks to Alexei Dejneka)
- ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
- correctly. (thanks to Dan Barlow)
- ** portability fixes aiming at bootstrapping under CLISP (thanks
- to Dave McDonald and Christophe Rhodes)
- ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
- ** fixes in type translation and and type inference (thanks to
- Christophe Rhodes)
- ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
- ** various fixes in the new ports (thanks to Dan Barlow)
- * several changes related to debugging:
- ** suppression of tail recursion, as noted above
- ** stack overflow detection, as noted above
- ** The default implementation of TRACE has changed. :ENCAPSULATE T
- is now the default. (For some time encapsulation has been more
- reliable than the breakpoint-based :ENCAPSULATE NIL
- implementation, at least on X86 systems; and I just noticed that
- encapsulation also seems closer to the spirit of the ANSI
- specification.)
+ SBCL source release and extract them from it.
+* The fasl file version number changed again, for dozens of reasons,
+ some of which are apparent above.
-changes in sbcl-0.7.3 relative to sbcl-0.7.2:
- * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
- Froyd porting CMU CL code originally by Douglas Thomas Crosher)
- * SBCL now runs on the PPC archtiecture under Linux. It actually did
- this as of 0.7.1.45, but was left out of the previous news section
- (thanks to Dan Barlow)
- * SBCL now runs on the Solaris operating system on SPARC architectures
- (thanks to Christophe Rhodes's port of the CMUCL runtime)
- * cleanups to the runtime on SPARC, both Linux and Solaris, and for
- gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
- * SPARC backend cleanups, allowing builds of cores optimized for V8
- and V9 SPARCS, and also emission of code targeted to a particular
- backend chosen at runtime (thanks to Christophe Rhodes and Raymond
- Toy)
- * SBCL is closer to bootstrapping under CLISP, thanks to various
- fixes by Christophe Rhodes.
- * The fasl file format has changed again, to allow the compiler's
- INFO database to support symbol macros.
- * The user manual (in doc/) is formatted into HTML more nicely.
- (thanks to coreythomas)
- * The system is smarter about SUBTYPEP relationships, especially
- those involving NOT types (including types such as ATOM which are
- represented internally using NOT types). Thus SUBTYPEP is less
- likely to return (VALUES NIL NIL) in general, and in particular
- bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
- Christophe Rhodes)
- * The fasl file format has changed again, because the internal
- representation of types now includes a new slot to support the new
- SUBTYPEP-of-NOT-types logic.
- * (not a change in the main branch of SBCL, but a related prototype
- which can hopefully be merged into the main branch of SBCL in the
- future:) Brian Spilsbury has produced a Unicode-enabled variant of
- sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
- <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
- * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
- dispatch macro character combinations. (thanks to Alexey Dejneka)
- * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
- that superficially look like logical namestrings correctly.
- * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
- can deal with.
- * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
- default supplied-p) for &optional and &key arguments. (thanks to
- Martin Atzmueller)
+changes in sbcl-0.6.13 relative to sbcl-0.6.12:
+* a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
+* Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
+ patch, so that DISASSEMBLE output is much nicer.
+* The code in the SB-PROFILE package now seems reasonably stable.
+ I still haven't decided what the final interface should look like
+ (I'd like PROFILE to interact cleanly with TRACE, since both
+ facilities use function encapsulation) but if you have a need
+ for profiling now, you can probably use it successfully with
+ the current CMU-CL-style interface.
+* Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
+ ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
+ Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
+ link now returns the dangling link itself, and for similar
+ reasons, TRUENAME on a cyclic symbolic link returns the cyclic
+ link itself. (In these cases the old code signalled an error and
+ looped endlessly, respectively.) Thus, DIRECTORY now works even
+ in the presence of dangling and cyclic symbolic links.
+* Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
+ is now a supported extension again, since the consensus on
+ sbcl-devel was that it can be useful for ordinary development
+ work, not just for debugging SBCL itself.
+* The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
+ NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
+ that currently-defined functions might be redefined later with
+ different return types.
+* Hash tables can be printed readably, as inspired by CMU CL code
+ of Eric Marsden and SBCL code of Martin Atzmueller.
+* better error handling in CLOS method combination, thanks to
+ Martin Atzmueller porting Pierre Mai's CMU CL patches
+* more overflow fixes for >16Mbyte I/O buffers
+* A bug in READ has been fixed, so that now a single Ctrl-D
+ character suffices to cause end-of-file on character streams.
+ In particular, now you only need one Ctrl-D at the command
+ line (not two) to exit SBCL.
+* fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
+ undisplaced arrays.
+* fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
+ comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
+ does the right thing.
+* The implementation of some type tests, especially for CONDITION
+ types, is now tidier and maybe faster, due to CMU CL code
+ originally by Douglas Crosher, ported by Martin Atzmueller.
+* Some math functions have been fixed, and there are new
+ optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
+ thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
+* (There are also some new optimizers in contrib/*-extras.lisp. Those
+ aren't built into sbcl-0.6.13, but are a sneak preview of what's
+ likely to be built into sbcl-0.7.0.)
+* A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
+ CL, ported to SBCL by Martin Atzmueller)
+* DESCRIBE now gives more information in some cases. (Pierre Mai's
+ patch to CMU CL, ported to SBCL by Martin Atzmueller)
+* Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
+* There's a new slam.sh hack to shorten the edit/compile/debug
+ cycle for low-level changes to SBCL itself, and a new
+ :SB-AFTER-XC-CORE target feature to control the generation of
+ the after-xc.core file needed by slam.sh.
+* minor incompatible change: The ENTRY-POINTS &KEY argument to
+ COMPILE-FILE is no longer supported, so that now every function
+ gets an entry point, so that block compilation looks a little
+ more like the plain vanilla ANSI section 3.2.2.3 scheme.
+* minor incompatible change: SB-EXT:GET-BYTES-CONSED now
+ returns the number of bytes consed since the system started,
+ rather than the number consed since the first time the function
+ was called. (The new definition parallels ANSI functions like
+ CL:GET-INTERNAL-RUN-TIME.)
+* minor incompatible change: The old CMU-CL-style DIRECTORY options,
+ i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
+ supported. Now DIRECTORY always does the abstract Common-Lisp-y
+ thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
+* Fasl file version numbers are now independent of the target CPU,
+ since historically most system changes which required version
+ number changes have affected all CPUs equally. Similarly,
+ the byte fasl file version is now equal to the ordinary
+ fasl file version.
-changes in sbcl-0.7.4 relative to sbcl-0.7.3:
- * bug 147 fixed: The compiler preserves its block link/count
- invariants more correctly now so that it doesn't crash. (thanks
- to Alexey Dejneka)
- * Dynamic loading of object files in OpenBSD is now supported. (thanks
- to Pierre Mai)
- * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
- * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
- no-value-for-this-character as NIL (as specified by ANSI).
- * HOST-NAMESTRING on physical pathnames now returns a string that is
- valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
- (thanks to Christophe Rhodes)
- * The Alpha port handles icache flushing more correctly. (thanks to
- Dan Barlow)
- * More progress has been made toward bootstrapping under CLISP. (thanks
- to Christophe Rhodes)
- * The fasl file format has changed again, because dynamic loading
- on OpenBSD (which has non-ELF object files) motivated some cleanups
- in the way that foreign symbols are transformed and passed around.
- * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
- is no longer treated as whitespace by the reader, but instead as
- an ordinary character. Thus e.g. (READ-FROM-STRING "A\7fB") returns
- |A\7fB|, instead of A as it used to.
+changes in sbcl-0.6.12 relative to sbcl-0.6.11:
+* incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
+ is no longer recognized. I apologize for this, because it was
+ listed in SB-EXT as a supported extension, but I found that
+ its existing behavior was poorly specified, as well as incorrectly
+ specified, and it looked like too much of a mess to straighten it
+ out. I have enough on my hands trying to get ANSI stuff to work..
+* many patches ported from CMU CL by Martin Atzmueller, with
+ half a dozen bug fixes in pretty-printing and the debugger, and
+ half a dozen others elsewhere
+* fixed bug 13: Floating point infinities are now supported again.
+ They might still be a little bit flaky, but thanks to bug reports
+ from Nathan Froyd and CMU CL patches from Raymond Toy they're not
+ as flaky as they were.
+* The --noprogrammer command line option is now supported. (Its
+ behavior is slightly different in detail from what the old man
+ page claimed it would do, but it's still appropriate under the
+ same circumstances that the man page talks about.)
+* The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
+ are now supported, and enabled by default. Thus, the compiler can
+ handle many floating point and complex operations much less
+ inefficiently. (Thus e.g. you can implement a complex FFT
+ without consing!)
+* The compiler now detects type mismatches between DECLAIM FTYPE
+ and DEFUN better, and implements CHECK-TYPE more correctly, and
+ SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
+ thanks to patches from Martin Atzmueller.
+* various fixes to make the cross-compiler more portable to
+ ANSI-conforming-but-different cross-compilation hosts (notably
+ Lispworks for Windows, following bug reports from Arthur Lemmens)
+* A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
+ ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
+ fixed thanks to Pierre Mai's CMU CL patches.
+* fixes to keep the system from overflowing internal counters when
+ it tries to use i/o buffers larger than 16M bytes
+* fixed bug 45a: Various internal functions required to support
+ complex special functions have been merged from CMU CL sources.
+ (When I was first setting up SBCL, I misunderstood a compile-time
+ conditional #-OLD-SPECFUN, and so accidentally deleted them.)
+* improved support for type intersection and union, fixing bug 12
+ (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
+ more obscure bugs as well
+* some steps toward byte-compiling non-performance-critical
+ parts of the system, courtesy of patches from Martin Atzmueller
+* Christophe Rhodes has made some debian packages of sbcl at
+ <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
+ From his sbcl-devel e-mail of 2001-04-08 they're not completely
+ stable, but are nonetheless usable. When he's ready, I'd be happy
+ to add them to the SourceForge "File Releases" section. (And if
+ anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
+* new fasl file format version number (because of changes in
+ internal representation of (OR ..) types to accommodate the new
+ support for (AND ..) types, among other things)
-changes in sbcl-0.7.5 relative to sbcl-0.7.4:
- * SBCL now builds with OpenMCL (version 0.12) as the
- cross-compilation host; also, more progress has been made toward
- bootstrapping under CLISP.
- * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
- Alpha architecture.
- * bug 158 fixed: The compiler can now deal with integer loop
- increments different from 1; fixing this turned out also to fix
- bug 164.
- * bug 169 fixed: no more bogus warnings about using lexical bindings
- despite the presence of perfectly good SPECIAL declarations (thanks
- to David Lichteblau)
- * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
- accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
- * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
- characters in them.
- * bug 180 fixed: Method combination specifications no longer ignore
- the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
- * bug fix: Structure type predicate functions now check their argument
- count as they should.
- * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
- correctly. (thanks to Pierre Mai)
- * minor incompatible change: The --noprogrammer option is deprecated
- in favor of the new --disable-debugger option, which is very similar.
- (The major difference is that it takes effect at a slightly different
- time at startup, causing handling of errors in --sysinit and
- --userinit files will be affected differently.) The
- SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
- been added to allow this functionality to be controlled from ordinary
- Lisp code. (ENABLE-DEBUGGER should help people like the Debian
- maintainers, who might want to run non-interactive scripts to
- build SBCL cores which will later be used interactively.)
- * minor incompatible change: The LOAD function no longer, when given
- a wild pathname to load, loads all files matching that pathname.
- Instead, an error of type FILE-ERROR is signalled.
+changes in sbcl-0.6.11 relative to sbcl-0.6.10:
+* Martin Atzmueller pointed out that bugs #9 and #25 are gone in
+ current SBCL.
+* bug 34 fixed by Martin Atzmueller: dumping/loading instances works
+ better
+* fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
+ and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
+ types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
+* DESCRIBE now works on structure objects again.
+* Most function call argument type mismatches are now handled as
+ STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
+ know whether the function will be redefined before the call is
+ executed. (The compiler could flag local calls with full WARNINGs,
+ as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
+ it doesn't keep track of enough information to know whether calls
+ are local in this sense.)
+* Compiler output is now more verbose, with messages truncated
+ later than before. (There should be some supported way for users
+ to override the default verbosity, but I haven't decided how to
+ provide it yet, so this behavior is still controlled by the internal
+ SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
+ src/compiler/ir1util.lisp.)
+* Fasl file format version numbers have increased again, because
+ support for the Gray streams extension changes the layout of the
+ system's STREAM objects.
+* The Gray subclassable streams extension now works, thanks to a
+ patch from Martin Atzmueller.
+* The full LOAD-FOREIGN extension (not just the primitive
+ LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
+* The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
+ but like most other programs, it defaults to copying the Unix
+ environment from the original process instead of starting the
+ new process in an empty environment.
+* Extensions which manipulate the Unix environment now support
+ an :ENVIRONMENT keyword option which doesn't smash case or
+ do other bad things. The CMU-CL-style :ENV option is retained
+ for porting convenience.
+* LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
+ as per Daniel Barlow's suggestion and Martin Atzmueller's patch
-changes in sbcl-0.7.6 relative to sbcl-0.7.5:
- * bug fix: Floating point exceptions are treated much more
- consistently on the x86/Linux and PPC/Linux platforms.
- * Array initialization with :INITIAL-ELEMENT is now much faster for
- cases when the compiler cannot open code the array creation, but
- does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
- array accesses have also seen a speed increase.
- * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
- specified. (This was at the root of some bad interactions between
- SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
- reporting the bug.)
- * bug fix: Internal error arguments for undefined functions are now
- computed correctly on the PPC/Linux platform.
- * bug fix: Bad &REST syntax is now checked correctly. (thanks to
- Raymond Toy's patch for CMU CL)
- * Support for the Solaris 9 operating environment has been included
- (thanks to Daniel Merritt)
- * A very ugly but hopefully complete draft of the missing FFI chapter
- of the manual has been created by reformatting the corresponding
- CMU CL manual chapter into (currently very ugly and incoherent)
- DocBook and bringing it up to date for SBCL behavior. Thus, the
- manual is now essentially complete, at least by my extreme
- once-and-only-once standards, whereby it's acceptable to refer to
- the doc strings of SB-EXT functions as the primary documentation.
- * The fasl file version number has changed again, due to cleanup of
- (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
- is no longer a static symbol.)
+changes in sbcl-0.6.10 relative to sbcl-0.6.9:
-changes in sbcl-0.7.7 relative to sbcl-0.7.6:
- * An alpha-quality port to the parisc architecture running Linux,
- based on the old CMUCL backend, has been made. This, even more so
- than the other backends, should be considered still a work in
- progress; known problems include that the Linux kernel in 64-bit
- mode does not propagate the correct sigcontext structure to
- userspace, and consequently SBCL on a parisc64 kernel will not
- work yet.
- * fixed bug 189: The compiler now respects NOTINLINE declarations for
- functions declared in FLET and LABELS. (I.e. "LET conversion" is
- suppressed.) Also now that the compiler is looking at declarations
- in the environment, it checks optimization declarations as well,
- and suppresses inlining when (> DEBUG SPEED).
- * More fixes have been made to treatment of floating point exception
- treatment and other Unix signals. In particular, floating point
- exceptions no longer cause Bus errors on the SPARC/Linux platform.
- * The detection and handling of control stack exhaustion (infinite
- or very deeply nested recursion) has changed. Stack exhaustion
- detection is now done by write-protecting pages at the OS level
- and applies at all optimization settings; when found, a
- SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
- STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
- be caught using IGNORE-ERRORS.
- * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
- correctly when transforming recursive LABELS functions to LETs.
- (thanks to Alexey Dejneka)
- * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
- that are names of constants or global variables.
- * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
- alien routines with docstrings.
- * Bug 184 fixed: Division of ratios by the integer 0 now signals an
- error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
- Raymond Toy)
- * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
- (thanks to Eric Marsden)
- * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
- object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
- * Bug fix: The SPARC backend can now compile functions involving
- LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
- * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
- to a functions expecting a PATHNAME-DESIGNATOR.
- * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
- lambda lists. (thanks to Alexey Dejneka)
- * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
- functions so that EXPORTing the name of the class doesn't cause
- MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
- to Antonio Martinez for reporting this)
- * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
- constant-folded without failing an assertion. (thanks to Einar
- Floystad Dorum for reporting this)
- * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
- types are now dealt with more correctly by the compiler.
- * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
- OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
- behaviour analogous to RENAME-FILE. This puts its behaviour more
- in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
- Marco Antinotti)
- * The fasl file version number has changed again. (because of the
- bug fix involving the names of PCL MAKE-INSTANCE functions)
+* A patch from Martin Atzmueller seems to have solved the SIGINT
+ problem, and as far as we know, signal-handling now works cleanly.
+ (If you find any new bugs, please report them!)
+* The system no longer defaults Lisp source file names to types
+ ".l", ".cl", or ".lsp", but only to ".lisp".
+* The compiler no longer uses special default file extensions for
+ byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
+ seems to expect a single default extension for all compiled code,
+ and there's no compelling reason to try to stretch the standard
+ to allow two different extensions.) Instead, byte-compiled files
+ default to the same extension as native-compiled files.
+* Fasl file format version numbers have increased again, because
+ a rearrangement of internal implementation packages made some
+ dumped symbols in old fasl files unreadable in new cores.
+* DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
+ many fewer weird special cases.
+* Bug #17 (differing COMPILE-FILE behavior between logical and
+ physical pathnames) has been fixed, and some related misbehavior too,
+ thanks to a patch from Martin Atzmueller.
+* Bug #30 (reader problems) is gone, thanks to a CMU CL patch
+ by Tim Moore, ported to SBCL by Martin Atzmueller.
+* Martin Atzmueller fixed several filesystem-related problems,
+ including bug #36, in part by porting CMU CL patches, which were
+ written in part by Paul Werkowski.
+* More compiler warnings in src/runtime/ are gone, thanks to
+ more patches from Martin Atzmueller.
+* Martin Atzmueller pointed out that bug 37 was fixed by his patches
+ some time ago.
-changes in sbcl-0.7.8 relative to sbcl-0.7.7:
- * A beta-quality port to the mips architecture running Linux,
- based on the old CMUCL backend, has been made. It has been tested
- on a big-endian kernel, and works sufficiently well to be able to
- rebuild itself; it has not been tested in little-endian mode.
- * fixed an inconsistency between gencgc.c and purify.c which made
- dumping/loading .core files unreliable
- * fixed bug 120a: The compiler now deals correctly with IFs where
- the consequent is the same as the alternative, instead of
- misderiving the return type. (thanks to Alexey Dejneka)
- * fixed bug 113: Logical pathnames are now dumpable (the logical
- host is resolved at load-time, throwing an error if it is not
- found).
- * fixed bug 174: FORMAT's error message is slightly clearer when a
- non-printing character is used in a format directive.
- * fixed several bugs in compiler checking of type declarations, i.e.
- violations of the Python "declarations are assertions" principle
- (thanks to Alexey Dejneka)
- * fixed several bugs in PCL's error checking (thanks to Gerd
- Moellmann)
- * fixed bug: printing of FILE-ERROR (thanks to Antonio
- Martinez-Shotton)
- * fixed bug in compilation of functions as first class values
- (thanks to Antonio Martinez-Shotton)
- * The compiler's handling TYPE-ERRORs which it can prove will
- inevitably happen at runtime has been cleaned up and corrected
- in several ways. (thanks to Alexey Dejneka)
- * improved argument type checking for various basic arithmetic
- operations (MAX, +, LOGXOR, etc.) which have had so much TLC
- lavished on them in the past that they can be compiled in many
- ways in different special cases
- * fixed bug 181: compiler checks validity of user supplied type
- specifiers
- * cleaned up code flushing in optimization: Function calls which
- should signal errors for safety purposes (e.g. which ANSI says
- should signal errors when their arguments are of incorrect type)
- are no longer optimized away.
- * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
- * incremented fasl file version number, because changes in the
- implementation of sequence functions like COERCE caused
- internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
- in old inline expansions) to become undefined. (Actually these
- changes were later undone, so we might very well be binary
- compatible with 0.7.7 after all, but leaving the version number
- incremented seemed like the simplest and most conservative
- thing to do.)
+changes in sbcl-0.6.9 relative to sbcl-0.6.8:
+
+* DESCRIBE now works on CONDITION objects.
+* The debugger now handles errors which arise when trying to print
+ *DEBUG-CONDITION*, so that it's less likely to fall into infinite
+ regress.
+* The build system now uses an additional file, customize-target-features.lisp,
+ to allow local modifications to the target *FEATURES* list. (The point of
+ this is that now I can set up a custom configuration, e.g. with :SB-SHOW
+ debugging features enabled, without having to worry about propagating it
+ into everyone's system when I do a "cvs update".) When no
+ customize-target-features.lisp file exists, the target *FEATURES* list
+ should be constructed the same way as before.
+* fixed bugs in DEFCONSTANT ANSI-compatibility:
+ ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
+ warn about behavior which is undefined under the ANSI spec. Note: This
+ is specified by ANSI, but it's not very popular with programmers.
+ If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
+ macro in the SBCL sources for an example of a workaround which you
+ might use to make portable ANSI-standard code which does what you want.
+ ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
+ pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
+ when it's used as a non-toplevel form. (This is required in order
+ to implement the DEFCONSTANT-EQX macro.)
+ ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
+ ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
+ funny things, due to bugs in the implementation of EVAL-WHEN
+ (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
+ non-toplevel DEFCONSTANTs are uncommon.)
+* The core file version number and fasl file version number have been
+ incremented, because the old noncompliant DEFCONSTANT behavior involved
+ calling functions which no longer exist, and because I also took the
+ opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
+* fixed bug 1 (error handling before read-eval-print loop starts), and
+ redid debugger restarts and related debugger commands somewhat while
+ doing so:
+ ** The QUIT debugger command is gone, since it did something
+ rather different than the SB-EXT:QUIT command, and since it never
+ worked properly outside the main toplevel read/eval/print loop.
+ Invoking the new TOPLEVEL restart provides the same functionality.
+ ** The GO debugger command is also gone, since you can just invoke
+ the CONTINUE restart directly instead.
+ ** The TOP debugger command is also gone, since it's redundant with the
+ FRAME 0 command, and since it interfered with abbreviations for the
+ TOPLEVEL restart.
+* The system now recovers better from non-PACKAGE values of the *PACKAGE*
+ variable.
+* The system now understands compound CONS types (e.g. (CONS FIXNUM T))
+ as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
+ some porting work by Martin Atzmueller)
+* Martin Atzmueller reviewed the CMU CL mailing lists and came back
+ with a boatload of patches which he ported to SBCL. Now that those
+ have been applied,
+ ** The system tries to make sure that its low-priority messages
+ are prefixed by semicolons, to help people who like to use
+ syntax highlighting in their ILISP buffer. (This patch
+ was originally due to Raymond Toy.)
+ ** The system now optimizes INTEGER-LENGTH better, thanks to more
+ patches originally written by Raymond Toy.
+ ** The compiler understands coercion between single-value and
+ multiple-VALUES type expressions better, getting rid of some very
+ weird behavior, thanks to patches originally by Robert MacLachlan
+ and Douglas Crosher.
+ ** The system understands ANSI-style non-KEYWORD &KEY arguments in
+ lambda lists, thanks to a patch originally by Pierre Mai.
+ ** The system no longer bogusly warns about "abbreviated type
+ declarations".
+ ** The compiler gets less confused by inlining and RETURN-FROM,
+ thanks to some patches originally by Tim Moore.
+ ** The system no longer hangs when dumping circular lists to fasl
+ files, thanks to a patch originally from Douglas Crosher.
+* Martin Atzmueller also fixed ROOM, so that it no longer fails with an
+ undefined function error.
+* gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
+ in structure slot initforms) for now, documented workaround instead:-|
+* fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
+* fixed bug 5: added stubs for various Gray stream functions called
+ in the not-a-CL:STREAM case, so that even when Gray streams aren't
+ installed, at least appropriate type errors are generated
+* fixed bug 8: better reporting of various PROGRAM-ERRORs
+* fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
+ consistently in DEFMETHOD forms.
+* removed bug 21 from BUGS, since Martin Atzmueller points out that
+ it doesn't seem to affect SBCL after all
+* The C runtime system now builds with better optimization and many
+ fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
-changes in sbcl-0.7.9 relative to sbcl-0.7.8:
- * minor incompatible change: The runtime (the Unix executable named
- "sbcl") is now much pickier about the .core files it will load.
- Essentially it now requires .core files to descend from the same
- build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
- as the runtime does. (The intent is to prevent the crashes which
- can occur, and which can even be reported as mysterious failures,
- when people patch the sources or change the build parameters
- without changing LISP-IMPLEMENTATION-VERSION, then mix and match
- sbcl and .core files.)
- * fixed bug: VALUES-LIST is no longer optimized away.
- * fixed bug 142: The FFI conversion of C string values to Lisp
- string values no longer conses excessively. (thanks to Nathan
- Froyd porting Raymond Toy's fix to CMU CL)
- * began to systematize and improve MOP conformance in PCL (thanks to
- Nathan Froyd, Gerd Moellman and Pierre Mai):
- ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
- itself;
- ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
- ** FINALIZE-INHERITANCE is now called on class finalization;
- ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
- argument precedence order.
- * fixed bug 202: The compiler no longer fails on functions whose
- derived types contradict their declared type.
- * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
- so it can be non-toplevel.
- * The fasl file version number has changed (because of the new
- implementation of DEFMACRO).
- * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
- safe code, that any length requirement by their type-specifier
- argument is valid. The exceptions to this are described in bug
- 213.
- * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
- functions now check the types of their inputs as required by ANSI.
- * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
- introduced symbol is DECLAREd to be SPECIAL.
- * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
- * fixed bug: :COUNT argument to sequence functions may be negative
- * fixed bug: body of DO-SYMBOLS may contain declarations
- * fixed bug: PUSHNEW now evaluates its arguments from left to right
- (reported by Paul F. Dietz, fixed by Gerd Moellman)
- * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
- symbol macro only once
- * fixed printing of call frame when argument list is unavailable
- * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
- * compiler no longer signals WARNING on unknown keyword
- :ALLOW-OTHER-KEYS
+changes in sbcl-0.6.8 relative to sbcl-0.6.7:
-changes in sbcl-0.7.10 relative to sbcl-0.7.9:
- * Support for building SBCL for MIPS platforms running in
- little-endian mode has now been checked in, and basic
- functionality on said platforms verified.
- * minor incompatible change: PCL now records the pathname of a file
- in which methods and the like are defined, rather than its
- truename.
- * minor incompatible change: TRUENAME now considers the truename of
- a file naming a directory to be the pathname with :DIRECTORY
- component indicating that directory.
- * minor incompatible change: a NAMED clause in the extended form of
- LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
- reason for the previous behaviour is unclear.
- * more systematization and improvement of CLOS and MOP conformance
- in PCL (thanks to Gerd Moellman and Pierre Mai):
- ** the standard ANSI CL generic function NO-NEXT-METHOD is now
- implemented;
- ** DEFINE-METHOD-COMBINATION no longer signals an error for
- primary methods with no specializers;
- ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
- implemented;
- ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
- and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
- FORWARD-REFERENCED-CLASSes; error reporting on
- CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
- has been improved;
- ** SXHASH on CLOS instances now uses a slot internal to the
- instance to return different numbers on distinct instances,
- while preserving the same return value through invocations of
- CHANGE-CLASS;
- ** DEFMETHOD signals errors when methods with longer incongruent
- lambda lists are added to generic functions;
- ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
- CLASS, as specified in AMOP;
- ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
- on the order returned by the primary method for classes of
- class STANDARD-CLASS;
- ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
- * fixed some bugs shown by Paul Dietz' test suite:
- ** DOLIST puts its body in TAGBODY;
- ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
- correct order;
- ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
- value producing form;
- ** if more variables are given to PROGV than values, extra
- variables are bound and made to have no value;
- ** NSUBSTITUTE on list arguments gets the right answer with
- :FROM-END;
- ** ELT signals an error of type TYPE-ERROR when the index argument
- is not a valid sequence index;
- ** LOOP signals (at macroexpansion time) an error of type
- PROGRAM-ERROR when duplicate variable names are found;
- ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
- ** FUNCALL of special-operators now cause an error of type
- UNDEFINED-FUNCTION;
- ** PSETQ now works as required in the presence of side-effecting
- symbol-macro places;
- ** NCONC accepts any object as its last argument;
- ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
- Gerd Moellman)
- ** loop-for-as-package does not require a package to be explicitely
- specified;
- ** LOOP WITH now treats NIL in the d-var-spec correctly as an
- ignored binding.
- * fixed bug 166: compiler preserves "there is a way to go"
- invariant when deleting code.
- * fixed bug 172: macro lambda lists with required arguments after
- &REST arguments now cause an error to be signalled. (thanks to
- Matthew Danish)
- * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
- bug. (thanks to Matthew Danish)
- * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
- Baumann)
- * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
- arguments are lexically rebound. (thanks to Gerd Moellmann and
- Pierre Mai)
- * fixed bug 194: error messages are now more informative when there
- is no primary method applicable in a call to a generic
- function. (thanks to Gerd Moellmann)
- * fixed bug in command line argument checking (thanks to Julian
- Fondren)
- * fixed bug in COUNT-IF, making it handle :FROM-END correctly
- (thanks to Matthew Danish)
- * incremented fasl file version number, because of the
- SXHASH-related changes in the layout of CLOS data structures
+* The system is now under CVS at SourceForge (instead of the
+ CVS repository on my home machine).
+* The new signal handling code has been tweaked to treat register
+ contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
+ instead of (SIGNED-BYTE 32), as the C header files have it. (Code
+ downstream, e.g. in debug-int.lisp, has implicit dependencies
+ on the unsignedness of integer representation of machine words,
+ and that caused the system to bomb out with infinite regress
+ when trying to recover from type errors involving signed values,
+ e.g. (BUTLAST '(1 2 3) -1).)
+* (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
+ (This was one of the bugs Peter Van Eynde reported back in July.)
+* The system now uses code inspired by Colin Walters' O(N)
+ implementation of MAP (from the cmucl-imp@cons.org mailing
+ list, 2 September 2000) when it can't use a DEFTRANSFORM to
+ inline the MAP operation, and there is more than one
+ sequence argument to the MAP call (so that it can't just
+ do ETYPECASE once and for all based on the type of the
+ single sequence argument). (The old non-inline implementation
+ of the general M-argument sequence-of-length-N case required
+ O(M*N*N) time when any of the sequence arguments were LISTs.)
+* The QUIT :UNIX-CODE keyword argument has been renamed to
+ QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
+* Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
+ have been added.
+* Raymond Wiker's patches to port dynamic loading from Linux to
+ FreeBSD have been added.
+* The BUGS file is now more nearly up to date, thanks in large part
+ to Martin Atzmueller's review of it.
+* The debugger now flushes standard output streams before it begins
+ its output ("debugger invoked" and so forth).
+* The core version number and fasl file version number have both
+ been incremented, because of incompatible changes in the layout
+ of static symbols.
+* FINISH-OUTPUT is now called more consistently on QUIT. (It
+ used to not be called for a saved Lisp image.)
+* Martin Atzmueller's version of a patch to fix a compiler crash,
+ as posted on sbcl-devel 13 September 2000, has been installed.
+* Instead of installing Martin Atzmueller's patch for the
+ compiler transform for SUBSEQ, I deleted the compiler transform,
+ and transforms for some similar consing operations.
+* A bug in signal handling which kept TRACE from working on OpenBSD
+ has been fixed.
+* added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
+ away by constant folding
+* The system now defines its address space constants in one place
+ (in the Lisp sources), and propagates them automatically elsewhere
+ (through GENESIS and the sbcl.h file). Therefore, patching the
+ address map is less unnecessarily tedious and error-prone. The
+ Lisp names of address space constants have also been systematized.
+* CVS tags like dollar-Header-dollar have been removed from
+ the sources, because they have never saved me trouble and
+ they've been source of trouble working with patches and other
+ diff-related operations.
+* fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
+ ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
+
+changes in sbcl-0.6.7 relative to sbcl-0.6.6:
+
+* The system has been ported to OpenBSD.
+* The system now compiles with a simple "sh make.sh" on the systems
+ that it's supported on. I.e., now you no longer need to tweak
+ text in the target-features.lisp-expr and symlinks in src/runtime/
+ by hand, the make.sh takes care of it for you.
+* The system is no longer so grossly inefficient when compiling code
+ involving vectors implemented as general (not simple) vectors (VECTOR T),
+ so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
+ which dares to use the various sequence functions on non-simple
+ vectors, takes less of a performance hit.
+ * There is now a primitive type predicate VECTOR-T-P
+ to test for the (VECTOR T) type, so that e.g.
+ (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
+ can now be compiled with some semblance of efficiency. (The old code
+ turned the type declaration into a full call to %TYPEP at runtime!)
+ * AREF on (VECTOR T) is still not fast, since it's still compiled
+ as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
+ ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
+ efficiently. (The old version made full calls to SUBTYPEP at runtime!)
+ * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
+ without making full calls to SUBTYPEP at runtime.
+ (Some analogous efficiency issues for non-simple vectors specialized to
+ element types other than T, or for non-simple multidimensional arrays,
+ have not been addressed. They could almost certainly be handled the
+ same way if anyone is motivated to do so.)
+* The changes in array handling break binary compatibility, so
+ *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
+* (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
+ instead of (VALUES T T).
+* By following the instructions that Dan Barlow posted to sbcl-devel
+ on 2 July 2000, I was able to enable primitive dynamic object
+ file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
+ functionality is not implemented (since it calls ld to resolve
+ library references automatically, requiring RUN-PROGRAM for its
+ implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
+ try to resolve library references) is now supported.
+* The system now flushes the standard output streams when it terminates,
+ unless QUIT is used with the RECKLESSLY-P option set. It also flushes
+ them at several other probably-convenient times, e.g. in each pass of
+ the toplevel read-eval-print loop, and after evaluating a form given
+ as an "--eval" command-line option. (These changes were motivated by a
+ discussion of stream flushing issues on cmucl-imp in August 2000.)
+* The source transform for TYPEP of array types no longer assumes
+ that an array whose element type is a not-yet-defined type
+ is implemented as an array of T, but instead punts, so that the
+ type will be interpreted at runtime.
+* There is now some support for cross-compiling in make.sh: each of
+ the phases of make.sh has its own script. (This should be transparent
+ to people doing ordinary, non-cross-compile builds.)
+* Since my laptop doesn't have hundreds of megabytes of memory like
+ my desktop machine, I became more motivated to do some items on
+ my to-do list in order to reduce the size of the system a little:
+ ** Arrange for various needed-only-at-cold-init things to be
+ uninterned after cold init. To support this, those things have
+ been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
+ symbols with such names are now uninterned after cold init).
+ ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
+ fasl files for cold load.
+ ** Remove the old compiler structure pooling code (which used to
+ be conditional on the target feature :SB-ALLOC) completely.
+ ** Redo the representation of some data in cold init to be more compact.
+ (I also looked into supporting byte compiled code at bootstrap time,
+ which would probably reduce the size of the system a lot, but that
+ looked too complicated, so I punted for now.)
+* The maximum signal nesting depth in the src/runtime/ support code has
+ been reduced from 4096 to 256. (I don't know any reason for the very
+ large old value. If the new smaller value turns out to break something,
+ I'll probably just bump it back up.)
+* PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
+ as per ANSI.
+* Many, many bugs reported by Peter Van Eynde have been added to
+ the BUGS list; some have even been fixed.
+* While enabling dynamic object file loading, I tried to make the
+ code easier to understand, renaming various functions and variables
+ with less ambiguous names, and changing some function calling
+ conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
+* While trying to figure out how to do the OpenBSD port, I tried to
+ clean up some of the code in src/runtime/. In particular, I dropped
+ support for non-POSIX signal handling, added various comments,
+ tweaked the code to reduce the number of compilation warnings, and
+ renamed some files to increase consistency.
+* To support the new automatic configuration functionality in make.sh,
+ the source file target-features.lisp-expr has been replaced with the
+ source file base-target-features.lisp-expr and the machine-generated
+ file local-target-features.lisp-expr.
+* fixed a stupid quoting error in make.sh so that using CMU CL
+ "lisp -batch" as cross-compilation host works again
-changes in sbcl-0.7.11 relative to sbcl-0.7.10:
- * fixed bug 127: DEFSTRUCT now does not clobber old structure
- accessors that are related by inheritance, as specified in the
- :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
- Valtteri Vuorikoski)
- * The compiler is now able to inline functions that were defined in
- a complex lexical environment (e.g. inside a MACROLET).
- * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
- to Lutz Euler)
- * Support for the upcoming FreeBSD-5.0 release has been included.
- (thanks to Dag-Erling Smorgrav)
- * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
- effect when it is not in a toplevel context.
- * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
- stand a better chance of being correct. (thanks to Gerd
- Moellmann)
- * fixed bug in COERCE, which now signals an error on coercing a
- rational to a bounded real type which excludes the expected
- answer.
- * The compiler is now able to derive types more accurately from the
- COERCE and COMPILE functions.
- * fixed bug 223: functional binding is considered to be constant
- only for symbols in the CL package.
- * fixed bug 231: SETQ did not check the type of a variable being set
- (reported by Robert E. Brown)
- * A new optimization for MAKE-INSTANCE has been included, fixing
- various bugs (including relating to :ALLOCATION :CLASS slots and
- :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
- Moellmann)
- * fixed some LOOP bugs revealed by Paul Dietz' test suite:
- ** As required by ANSI, LOOP now disallows anonymous collection
- clauses such as COLLECT I in conjunction with aggregate boolean
- clauses such as THEREIS (= I 1);
- ** LOOP now signals an error when any variable is reused in the
- same loop (including the potentially useful construct analogous
- to WITH A = 1 WITH A = (1+ A);
- ** IT is only a special loop symbol within the first clause of a
- conditional loop clause;
- ** LOOP with a typed iteration variable over a hashtable now
- signals a type error iff it should.
- * fixed some other bugs revealed by Paul Dietz' test suite:
- ** FILE-STREAM now names the class previously known as FD-STREAM;
- ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
- argument) no longer signals an error;
- ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
- of the slot symbol, rather than using the current package
- ((:CONC-NAME "") continues to intern the slot's name in the
- current package);
- * incremented fasl file version number, because of the incompatible
- change to the DEFSTRUCT-DESCRIPTION structure, and again because
- of the new implementation of DEFINE-COMPILER-MACRO.
+changes in sbcl-0.6.6 relative to sbcl-0.6.5:
-changes in sbcl-0.7.12 relative to sbcl-0.7.11:
- * minor incompatible change: code processed by the "interpreter" or
- EVAL now has a compilation optimization policy of (DEBUG 2)
- (changed from (DEBUG 1)) to improve debuggability of interactive
- development, and to allow the use of the debug RETURN command in
- such code.
- * an experimental implementation of the RETURN command for the
- debugger has been included. (thanks to Frederik Kuivinen)
- * fixed bug 62: constraints were not propagated into a loop.
- * fixed bug in embedded calls of SORT (reported and investigated by
- Wolfgang Jenkner).
- * fixed some bugs revealed by Paul Dietz' test suite:
- ** printing and reading of arrays with some dimensions having
- length 0 (thanks to Gerd Moellmann);
- ** BOA constructor with &AUX argument without a default value does
- not cause a type error;
- ** CONSTANTP now returns true for all self-evaluating objects.
+* DESCRIBE no longer tries to call itself recursively to describe
+ bound/fbound values, so that it no longer fails on symbols which are
+ bound to themselves (like keywords, T, and NIL).
+* DESCRIBE now works on generic functions.
+* The printer now prints less-screwed-up representations of closures
+ (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
+* A private symbol is used instead of the :EMPTY keyword previously
+ used to mark empty slots in hash tables. Thus
+ (DEFVAR *HT* (MAKE-HASH-TABLE))
+ (SETF (GETHASH :EMPTY *HT*) :EMPTY)
+ (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
+ now does what ANSI says that it should. (You can still get
+ similar noncompliant behavior if bang on the hash table
+ implementation with all the symbols you get back from
+ DO-ALL-SYMBOLS, but at least that's a little harder to do.)
+ This breaks binary compatibility, since tests for equality to
+ :EMPTY are wired into things like the macroexpansion of
+ WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
+ implementations.
+* There's now a minimal placeholder implementation for CL:STEP,
+ as required by ANSI.
+* An obscure bug in the interaction of the normal compiler, the byte
+ compiler, inlining, and structure predicates has been patched
+ by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
+ :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
+ mailing list).
+* Missing ordinary arguments in a macro call are now detected even
+ when the macro lambda list contains &KEY or &REST.
+* The debugger no longer complains about encountering the top of the
+ stack when you type "FRAME 0" to explicitly instruct it to go to
+ the top of the stack. And it now prints the frame you request even
+ if it's the current frame (instead of saying "You are here.").
+* As specified by ANSI, the system now always prints keywords
+ as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
+ KEYWORD package.
+* The default initial SIZE of HASH-TABLEs is now smaller.
+* Type information from CLOS class dispatch is now propagated
+ into DEFMETHOD bodies, so that e.g.
+ (DEFMETHOD FOO ((X SINGLE-FLOAT))
+ (+ X 123.0))
+ is now basically equivalent to
+ (DEFMETHOD FOO ((X SINGLE-FLOAT))
+ (DECLARE (TYPE SINGLE-FLOAT X))
+ (+ X 123.0))
+ and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
+ operation, without having to do run-time type dispatch.
+* The macroexpansion of DEFMETHOD has been tweaked so that it has
+ reasonable behavior when arguments are declared IGNORE or IGNORABLE.
+* Since I don't seem to be making big file reorganizations very often
+ any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
+ is overflowing my ability to conveniently back them up), I've finally
+ checked the system into CVS. (The CVS repository is on my home system,
+ not at SourceForge -- putting it on SourceForge might come later.)
+* SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
+ high-level GC-NOTIFY-FOO functions send their output. (There's
+ still very little control of where low-level verbose GC functions
+ send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
+ less than it used to -- the GC-NOTIFY-FOO functions are now under
+ the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
+* The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
+ in only one place in the source code, and propagates it automatically
+ everywhere that it's needed. Thus e.g. when I bump the version from
+ 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
+* The C source files now include boilerplate legalese and documentation
+ at the head of each file (just as the Lisp source files already did).
+* At Dan Barlow's suggestion, the hyperlink from the SBCL website
+ to his page will be replaced with a link to his new CLiki service.
-changes in sbcl-0.7.13 relative to sbcl-0.7.12:
- * incompatible packaging change: in line with Unix convention,
- SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
- if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
- * REQUIRE and PROVIDE are now optionally capable of doing something
- useful. See the documentation string for REQUIRE.
- * infrastructure for a managed SBCL contrib system: contributed
- modules in this release include:
- ** the ASDF system definition facility;
- ** an interface to the BSD Sockets API;
- ** an ACL-like convenience interface to the repl;
- (thanks to Kevin Rosenberg)
- ** an implementation of ROTATE-BYTE, with efficient implementation
- on x86 hardware;
- * fixed a bug in LOG, so that LOG of a rational argument near 1 now
- gives a closer approximation to the right answer than previously.
- (thanks to Raymond Toy)
- * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
- UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
- optional environment arguments, as required by ANSI.
- * fixed bugs in other functions taking environment objects, allowing
- calls with an explicit NIL environment argument to be compiled
- without error.
- * fixed bug 228: primary return values from
- FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
- COMPILE or FUNCTION.
- * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
- :TYPE will no longer signal errors on innocuous objects.
- * fixed bug 231b: SETQ is better at respecting type declarations in
- the lexical environment.
- * fixed a bug in DEFCLASS: classes named by symbols with no or
- unprintable packages can now be defined.
- * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
- carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
- * fixed compiler failure related to checking types of functions.
- (reported by Robert E. Brown)
- * the compiler is now much more consistent in its error-checking
- treatment of bounding index arguments to sequence functions: in
- (SAFETY 3) code, errors will be signalled in almost all cases if
- invalid sequence bounding indices are passed to functions defined
- by ANSI to operate on sequences.
- * fixed a bug in the build procedure: documentation of SBCL-specific
- packages is now preserved and available in the final Lisp image.
- * lifted FDEFINITION lookup out of loops in the implementation of
- many list operations. (thanks to Robert E. Brown)
- * fixed a bug in the reader: the #n# reader macro now works for
- objects of type STANDARD-OBJECT. (reported by Tony Martinez)
- * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
- and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
- E. Brown and Tony Martinez respectively)
- * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
- SLOT-BOUNDP: in particular, it is now able to optimize them much
- better, and is now not vulnerable to having packages renamed.
- Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
- always called when a slot is not present in an instance. (thanks
- to Gerd Moellmann)
- * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
- longer signal an error on unreading a character following EOF on
- the previous constituent stream. (thanks to Tony Martinez)
- * fixed some bugs revealed by Paul Dietz' test suite:
- ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
- not just nonnegative fixnums;
- ** the logical bit-array operators such as BIT-AND now accept an
- explicit NIL for their "opt-arg" argument (to indicate a
- freshly-consed result bit-array);
- ** ELT now signals an error on an invalid sequence index in safe
- code;
- ** the type system is now cleverer about negations of numeric
- types, and consequently understands the BIGNUM and RATIO types
- better;
- ** the type system is now cleverer about the interaction between
- INTEGER and RATIO types: while bugs still remain, many more
- cases are accurately computed;
- ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
- if it is in the last clause;
- ** CONSTANTLY now correctly returns a side-effect-free function in
- all cases;
- ** DECLARE is no longer treated as a special-operator; in
- particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
- * incremented fasl file version number due to the change in the
- DEFSTRUCT-SLOT-DESCRIPTION structure.
+changes in sbcl-0.6.5 relative to sbcl-0.6.4:
+
+* Raymond Wiker's patches to port the system to FreeBSD have been merged.
+* The build process now looks for GNU make under the default name "gmake",
+ instead of "make" as it used to. If GNU make is not available as "gmake"
+ on your system, you can change this default behavior by setting the
+ GNUMAKE environment variable.
+* Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
+ can build without error under CMU CL.
-changes in sbcl-0.7.14 relative to sbcl-0.7.13:
- * a better implementation of SXHASH on (simple) bit vectors,
- measured both in execution speed and in distribution of results
- over the positive fixnums, has been installed. Likewise, a better
- implementation of EQUAL for simple bit vectors is now available.
- * fixed CEILING optimization for a divisor of form 2^k.
- * fixed bug 240 (emitting extra style warnings "using the lexical
- binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
- by Antonio Martinez)
- * fixed SXHASH, giving different results for NIL depending on type
- declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
- * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
- variable. (found by Rolf Wester)
- * SBCL does not ignore type declarations for special
- variables. (reported by rif on c.l.l 2003-03-05)
- * some bug fixes in contrib/sb-aclrepl/
- * fixed some bugs revealed by Paul Dietz' test suite:
- ** a bug in the CONS type specifier, whereby the CAR and CDR
- types got intertwined, has been fixed;
- ** the type system is now able to reason about the interaction
- between INTEGER and RATIO types more completely;
- ** APPEND, [N]REVERSE and NRECONC check that those their
- arguments, which must be proper lists, are really so;
- ** An array specialized to be unable to hold elements has been
- implemented, as required -- yes, really -- by ANSI;
- ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
- on malformed property lists;
+changes in sbcl-0.6.4 relative to sbcl-0.6.3:
-changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
- * experimental native threads support (on x86 Linux >=2.4 only).
- This is not compiled in by default: you need to add :SB-THREAD to
- the target features. See the "Beyond ANSI" chapter of the manual
- for details.
- * fix for longstanding nonANSIism: The old distinction between
- CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
- The return value from CL:FIND-CLASS is now a CLOS class, and
- likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
- CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
- * An interface to the MetaObject Protocol, as described in Kiczales,
- des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
- MIT Press, 1991, is available from the SB-MOP package.
- * incompatible change: the SB-PCL package should now be considered
- a private implementation detail, and no longer a semi-private MOP
- interface.
- * minor incompatible change: due to rearrangement for threads, the
- control stack and binding stack are now allocated at arbitrary
- addresses instead of being hardcoded per-port. Users affected by
- this probably have to be doing advanced things with shared
- libraries, and will know who they are.
- * minor incompatible change: Previously, all --eval forms used were
- processed with READ before any of them were processed with EVAL.
- Now each --eval form is processed with both READ and EVAL before
- the next --eval form is processed. (Thus package operations like
- sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
- work as the user might reasonably expect.)
- * minor incompatible change: *STANDARD-INPUT* is now only an
- INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
- Martinez)
- * minor incompatible change: Y-OR-N-P is now character-oriented,
- not line oriented. Also, YES-OR-NO-P now works without errors.
- (thanks to Antonio Martinez)
- * sb-aclrepl module improvements: an integrated inspector, added
- repl features, and a bug fix to :trace command.
- * Known functions, which cannot be open coded by the backend, are
- considered to be able to check types of their arguments. (fixing
- a bug report by Nathan J. Froyd)
- * fixed a bug in computing method discriminating functions: It is
- now possible to define methods specialized on classes which have
- forward-referenced superclasses. (thanks to Gerd Moellmann)
- * fixed evaluation order in optional entries (reported by Gilbert
- Baumann)
- * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
- specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
- * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
- required-by-AMOP NAME argument, as well as CLASS and
- DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
- * fixed bug 20: DEFMETHOD can define methods using names that are
- not the proper names of classes to designate class specializers.
- * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
- Unix file descriptors, instead of blowing up. (thanks to Antonio
- Martinez)
- * Garbage collection refactoring: user-visible change is that a
- call to the GC function during WITHOUT-GCING will not do garbage
- collection until the end of the WITHOUT-GCING. If you were doing
- this you were probably losing anyway.
- * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
- (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
- TYPEP the latter but not the former.
- * The compiler issues a full WARNING for calls to undefined functions
- with names from the CL package.
- * MAP-INTO for a vector destination is open coded. (reported by
- Brian Downing on c.l.l)
- * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
- documentation string.
- * fixed some bugs revealed by Paul Dietz' test suite:
- ** COPY-ALIST now signals an error if its argument is a dotted
- list.
- ** Condition slots are now accessed more correctly in the presence
- of multiple initargs for a given slot.
- ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
- exclude restarts of the same name associated with a different
- condition.
- ** DEFCLASS of forward-referenced classes with another
- forward-referenced class in the superclasses list no longer
- causes an error.
- ** Condition slots are now initialized once each, not multiple
- times. (thanks to Gerd Moellmann)
- ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
- Gerd Moellmann)
- ** &WHOLE and &REST arguments in macro lambda lists are patterns.
- ** NSET-EXCLUSIVE-OR does not return extra elements when its
- arguments contain duplicated elements.
- ** RESTART-CASE understands local macros.
- ** RESTART-CASE associates exactly its own restarts with a condition.
- ** ENDP in safe mode checks its argument to be of type LIST.
- ** COPY-SYMBOL in a threaded build no longer fails when the symbol
- in question is unbound.
- ** Optimized MAKE-INSTANCE functions no longer cause internal
- assertion failures in the presence of duplicate initargs.
- ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
- ** Side-effectful :DEFAULT-INITARGS have their side-effects
- propagated even in the ctor optimized implementation of
- MAKE-INSTANCE.
- ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
+* There is now a partial SBCL user manual (with some new text and some
+ text cribbed from the CMU CL manual).
+* The beginnings of a profiler have been added (starting with the
+ CMU CL profiler and simplifying and cleaning up). Eventually the
+ main interface should be through the TRACE macro, but for now,
+ it's still accessed through vaguely CMU-CL-style functions and macros
+ exported from the package SB-PROFILE.
+* Some problems left over from porting CMU CL to the new
+ cross-compilation bootstrap process have been cleaned up:
+ ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
+ instead of SB!XC:DEFMACRO, compounded by an oversight on my
+ part when getting rid of the compiler *BACKEND* stuff.)
+ ** The value of *NULL-TYPE* was screwed up, because it was
+ being initialized before the type system knew the final
+ definition of the 'NULL type. This screwed up several key
+ optimizations in the compiler, causing inefficiency in all sorts
+ of places. (I found it because I wanted to understand why
+ GET-INTERNAL-RUN-TIME was consing.)
+* fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
+ PROCLAIM FTYPE information. Unfortunately this broke binary
+ compatibility again, since now the forms output by DEFGENERIC
+ to refer to functions which didn't exist in 0.6.3.
+* added declarations so that SB-PCL::USE-CACHING-DFUN-P
+ can use the new (as of 0.6.3) transform for SOME into MAP into
+ inline code
+* changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
+ values to (INTEGER 0 1000000), so that the time code will no longer
+ occasionally get blown up by Linux returning 1000000 microseconds
+* PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
+ its output conform to the ANSI spec. (Alas, this makes its output
+ uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
+* A full call to MAP NIL with a single sequence argument no longer conses.
+* fixes to problems pointed out by Martin Atzmueller:
+ * The manual page no longer talks about multiprocessing as though
+ it were currently supported.
+ * The ILISP support patches have been removed from the distribution,
+ because as of version 5.10.1, ILISP now supports SBCL without us
+ having to maintain patches.
+* added a modified version of Raymond Toy's recent CMU CL patch for
+ EQUALP comparison of HASH-TABLE
-changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
- * SBCL now builds using CLISP (version of late April 2003 from CVS) as
- cross-compilation host. As a consequence, we can now bootstrap our
- way up to SBCL starting with a bare gcc toolchain and human-readable
- source code (first the source to CLISP, then the source to SBCL).
- * A contributed module containing a partial implementation of the
- simple-streams interface has been included. (thanks to Rudi
- Schlatte)
- * A contributed module implementing the RFC1321 Message Digest
- Algorithm, known as MD5, has been included.
- * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
- no longer has any effect, as the code controlled by this feature
- has been deleted. (As far as we know, no-one has ever built using
- this feature, and its semantics were confused in any case).
- * minor incompatible change: As a consequence of making SLOT-EXISTS-P
- work on conditions (as required by the ANSI specification),
- SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
- expected behaviour on conditions. Users should note, however,
- that such behaviour is not required by the ANSI specification,
- and so use of this behaviour may render their code unportable.
- * fixed some bugs revealed by Paul Dietz' test suite:
- ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
- types.
- ** &ENVIRONMENT parameter in macro lambda list is bound first.
- ** SXHASH on condition objects no longer returns NIL.
- ** :ALLOCATION :CLASS slots are better treated; their values are
- updated on class redefinition, and initforms inherited from
- superclasses are applied.
- ** REMOVE-METHOD returns its generic function argument even when
- no method was removed.
- ** SHARED-INITIALIZE now initializes the values of the requested
- slots, including those with :ALLOCATION :CLASS.
- ** ALLOCATE-INSTANCE now works on structure classes defined via
- DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
- STRUCTURE-CLASS).
- ** SLOT-EXISTS-P now works on conditions, as well as structures
- and CLOS instances.
- ** MAKE-LOAD-FORM now has the required methods on
- STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
- ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
- keyword, and now implements the SLOT-NAMES argument.
- ** methods with &OPTIONAL arguments no longer allow too many
- arguments to be passed in the call without error.
- ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
- option is consistent with the required arguments of the generic
- function lambda list.
- * bug fix: REQUIRE accepts a string designator. (Thanks to
- Antonio Martinez.)
- * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
- SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
- specified-by-AMOP lambda list of (CLASS &REST INITARGS).
- * bug fix: The compiler now checks for duplicated variables in macro
- lambda lists.
- * bug fix: SETQ on globals returns the correct value.
- * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
- not a COMPILER-ERROR (followed by some other strange error on
- choosing the CONTINUE restart).
- * bug fix: make.sh and friends are now more consistent in the way that
- they look for GNU "make".
+changes in sbcl-0.6.3 relative to sbcl-0.6.2:
+
+* The system still can't cross-compile itself with
+ *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
+ entails), but at least it can compile more of itself that way
+ than it used to be able to, and various buglets which were uncovered
+ by trying to cross-compile itself that way have now been fixed.
+* This release breaks binary compatibility again. This time
+ at least I've incremented the FASL file format version to 2, so that the
+ problem can be detected reliably instead of just causing weird errors.
+* various new style warnings:
+ ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
+ ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
+ ** using the lexical binding of a variable named in the *FOO* style
+* DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
+ as specified by ANSI.
+* *RANDOM-STATE* is no longer automatically initialized from
+ (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
+ default behavior of the system is to repeat its behavior every time
+ it's run. If you'd like to change this behavior, you can always
+ explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
+ old convention there was no comparably easy way to get the system to
+ repeat its behavior every time it was run.
+* Support for the pre-CLTL2 interpretation of FUNCTION declarations as
+ FTYPE declarations has been removed, in favor of their ANSI
+ interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
+* The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
+ the types of their sequence arguments can be determined at compile time.
+ This is done through a new open code expansion for MAP which eliminates
+ consing for (MAP NIL ..), and reduces consing otherwise, when sequence
+ argument types can be determined at compile time.
+* The optimizer now transforms COERCE into an identity operation when it
+ can prove that the coerced object is already of the correct type. (This
+ can be a win for machine generated code, including the output of other
+ optimization transforms, such as the MAP transform above.)
+* Credit information has been moved from source file headers into CREDITS.
+* Source file headers have been made more standard.
+* The CASE macro now compiles without complaining even when it has
+ no clauses.
-changes in sbcl-0.8.1 relative to sbcl-0.8.0:
- * minor incompatible change: some nonsensical specialized lambda
- lists (used in DEFMETHOD) which were previously ignored now signal
- errors.
- * minor incompatible change: the system is now aware of the types of
- variables in the COMMON-LISP package, and will signal errors for
- most violations of these type constraints (where previously they
- were silently accepted).
- * minor incompatible change: COMPILE-FILE now uses the freedom
- afforded (ANSI 3.2.2.3) to use derived function types for
- functions defined in the same file. This also permits the system
- to warn on static type mismatches and function
- redefinition. (Currently it does not work with high DEBUG level.)
- * minor incompatible change: VALUES declaration is disabled.
- * When issuing notes, the compiler now signals a condition of type
- SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
- restart for use in user handlers. It is expected that the
- COMPILER-NOTE condition will eventually become a condition
- supertype to a hierarchy of note types, which will then be
- handleable in a similar fashion. However, at the moment, no such
- note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
- but it's an implementation detail, not a classification for the
- purpose above.)
- * Changes in type checking closed the following bugs:
- ** type checking of unused values (192b, 194d, 203);
- ** template selection based on unsafe type assertions (192c, 236);
- ** type checking in branches (194bc).
- * A short form of VALUES type specifier has ANSI meaning (it has
- increased the number of situations when SBCL cannot perform type
- checking).
- * fixed bug in DEFSTRUCT: once again, naming structure slots with
- keywords or constants is permissible.
- * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
- defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
- classes. (thanks to Antonio Martinez)
- * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
- outputs FRESH-LINE or TERPRI, and no longer converts its stream
- argument to a pretty-print stream. Instead, it leaves any such
- operations to DESCRIBE-OBJECT methods.
- * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
- by Teemu Kalvas)
- * bug fix: NIL is now a valid destructuring argument in DEFMACRO
- lambda lists. (thanks to David Lichteblau)
- * bug fix: Defining a generic function with a :METHOD-CLASS being a
- subclass of STANDARD-METHOD no longer causes stack exhaustion.
- (thanks to Gerd Moellmann)
- * fixed bug 246: increased compilation speed of long
- MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
- integer argument)
- * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
- has been included.
- * DEFCONSTANT now throws a condition of type
- SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
- constant to a non-EQL value; CONTINUE and ABORT restarts
- respectively change and preserve the value.
- * fixed bug 63: The code walker, part of the implementation of CLOS,
- is now better at handling symbol macros.
- * bug fix: There is no longer an internal implementation type named
- CL:LENGTH. (reported by Raymond Toy)
- * bug fix: In macro-like defining macros/special operators the
- implicit block does not enclose the lambda list.
- * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
- enclosed in parentheses) are not suitable as type specifiers, and
- their use properly signals an error now.
- * bug fix: An argument count mismatch for a type specifier in code
- being compiled no longer causes an unhandled error at compile
- time, but signals a compile-time warning.
- * fixed simple vector readable printing
- * bug fix: DESCRIBE takes more care over whether the class
- precedence list slot of a class is bound before accessing it.
- (reported by Markus Krummenacker)
- * bug fix: FORMATTER can successfully compile pretty-printer format
- strings which use variants of the ~* directive inside.
- * bug fix: SEARCH now applies its TEST predicate to the elements of
- the arguments in the correct order. (thanks to Wolfhard Buss)
- * fixed bug 235b: The compiler uses return types of MAPCAR and friends
- in type inference. (thanks to Robert E. Brown)
- * bug fix: Reading in symbols with an explicit package name of ""
- (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
- * fixed some bugs revealed by Paul Dietz' test suite:
- ** NIL is now allowed as a structure slot name.
- ** Arbitrary numbers, not just REALs, are allowed in certain
- circumstances in LOOP for-as-arithmetic clauses.
- ** Multiple class redefinitions before slot access no longer
- causes a type error.
- ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
- association between the name and a class.
- ** Generic functions with non-standard method-combination and over
- five methods all of which return constants no longer return NIL
- after the first few invocations. (thanks to Gerd Moellmann)
- ** CALL-NEXT-METHOD with no arguments now passes the original
- values of the arguments, even in the presence of assignment.
- ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
- object.
- ** DISASSEMBLE works with closures and funcallable instances.
- ** ADD-METHOD now returns the generic function, not the new method.
- ** FIND-METHOD signals an error if the lengths of the specializers
- is incompatible with the generic function, even if the ERRORP
- argument is true.
- ** TYPE-OF returns recognizeable subtypes of all built-in-types of
- which its argument is a member.
- ** DEFCLASS only redefines the class named by its class-name
- argument if that name is the proper name of the class;
- otherwise, it creates a new class.
- ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
- of the UNBOUND-SLOT condition to the name of the slot.
- ** (SETF (AREF bv 0) ...) did not work for bit vectors.
- ** SLOT-UNBOUND and SLOT-MISSING now have their return values
- treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
- SLOT-MAKUNBOUND in the specified fashion.
+changes in sbcl-0.6.2 relative to sbcl-0.6.1:
-changes in sbcl-0.8.2 relative to sbcl-0.8.1:
- * fixed bug 148: failure to inline-expand a local function left
- garbage, confusing the compiler.
- * fixed bugs 3cd: structure slot readers perform type check if the
- slot can have an invalid value (i.e. it is either not initialized
- or can be written with a less specific slot writer).
- * bug fix: the compiler now traps array references to elements off
- the end of an array; previously, the bounds checking in some
- circumstances could go off-by-one.
- * improved MACHINE-VERSION, especially on Linux (thanks to Lars
- Brinkhoff)
- * type declarations for array element types now obey the description
- on the CLHS page "Declaration TYPE", as per discussions on
- sbcl-help around 2003-05-08. This means that a declaration
- (TYPE (ARRAY FOO) BAR) means that, within the scope of the
- declaration, all references to BAR will be asserted or assumed
- (with THE, so dependent on compiler policy) to involve objects of
- type FOO. Note that no such declaration is implied in
- (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
- * declared types of functions from the "Conditions"
- chapter. (reported by Paul Dietz)
- * bug fix: CERROR accepts a function as its first argument.
- * bug fix: NTH an NTHCDR accept a bignum as index
- arguments. (reported by Adam Warner)
- * optimization: character compare routines now optimize comparing
- against a constant character. (reported by Gilbert Baumann)
- * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
- argument now works properly on the MIPS platform.
- * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
- * repeated evaluation of the same DEFSTRUCT, a slot of which is
- declared to have a functional type, does not cause an error
- anymore.
- * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
- many :DEFAULT-INITARGS. (reported by Istvan Marko)
- * fixed bug: if last continuation of a deleted block has a
- destination, this destination should be deleted too. (reported by
- ohler on #lisp)
- * fixed a bug in the bootstrap process: the host compiler's values
- of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
- into the newly-built SBCL. (reported by Eric Marsden on #lisp,
- test case from Patrik Nordebo)
- * improved the ability of the disassembler on the PPC platform to
- provide helpful disassembly notes.
- * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
- the class in more cases than previously.
- * bug fix: FILE-POSITION now understands :START and :END for
- STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
- * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
- 8) data. (thanks to David Lichteblau)
- * bug fix: it is possible to add a method to a generic function
- without lambda list.
- * bug fix: reader failed to signal END-OF-FILE inside an
- object representation. (reported by Nikodemus Siivola)
- * fixed some bugs revealed by Paul Dietz' test suite:
- ** LAST and [N]BUTLAST should accept a bignum.
- ** condition slot accessors are methods.
- ** (VECTOR NIL) is a subtype of STRING.
+* (Note that the way that the PCL macroexpansions were rewritten
+ to accommodate the change in DEFGENERIC below breaks binary
+ compatibility. That is, fasl files compiled under sbcl-0.6.1 may
+ not run under sbcl-0.6.2. Once we get out of alpha releases,
+ i.e. hit release 1.0.0, we'll probably try to maintain binary
+ compatibility between maintenance releases, e.g. between sbcl-1.4.3
+ and sbcl-1.4.4. Until then, however, it might be fairly common
+ for maintenance releases to break binary compatibility.)
+* A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
+ has been fixed.
+* The reporting of unhandled signals has been changed to print some
+ explanatory text as well as the report form. (Previously only
+ the report form was printed.)
+* The macroexpansion for DEFGENERIC now DECLAIMs the function that
+ it defines, so that the compiler no longer issues undefined function
+ warnings for compiled-but-not-yet-loaded generic functions.
+* The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
+ and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
+ and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
+ section of the ANSI spec are supported.
+* The "" nickname for the "KEYWORD" package has been removed.
+ The reader still handles symbol tokens which begin with a package marker
+ as keywords, but it doesn't expose its mechanism for doing so in the
+ (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
+* The system now issues STYLE-WARNINGs for contradictory TYPE
+ proclamations. (Warnings for contradictory FTYPE proclamations would
+ be nice too, but those can't be done usefully unless the type system
+ is made smarter about FUNCTION types.)
+* The names of source files "*host-*.lisp" and "*target-*.lisp" have been
+ systematized, so that "*target-*.lisp is supposed to exist only on the
+ target and imply that there's a related file which exists on the
+ host, and *host-*.lisp is supposed to exist only on the host and imply
+ that there's a related file which exists on the target. This involves a
+ lot of renaming. Hopefully the acute confusion caused by the renaming
+ will be justified by the reduction in chronic confusion..
+ ** runtime-type.lisp -> early-target-type.lisp
+ ** target-type.lisp -> late-target-type.lisp
+ ** early-host-format.lisp -> early-format.lisp
+ ** late-host-format.lisp -> late-format.lisp
+ ** host-error.lisp -> misc-error.lisp
+ ** early-error.lisp -> early-target-error.lisp
+ ** late-error.lisp -> late-target-error.lisp
+ ** host-defboot.lisp -> early-defboot.lisp
+ ** code/misc.lisp -> code/target-misc.lisp
+ ** code/host-misc.lisp -> code/misc.lisp
+ ** code/numbers.lisp -> code/target-numbers.lisp
+ ** code/early-numbers.lisp -> numbers.lisp
+ ** early-host-type.lisp -> early-type.lisp
+ ** late-host-type.lisp -> late-type.lisp
+ ** host-typep.lisp -> typep.lisp
+ ** load.lisp -> target-load.lisp
+ ** host-load.lisp -> load.lisp
+ ** host-disassem.lisp -> disassem.lisp
+ ** host-insts.lisp -> insts.lisp
+ ** byte-comp.lisp -> target-byte-comp.lisp
+ ** host-byte-comp.lisp -> byte-comp.lisp
+ ** host-signal.lisp -> signal.lisp
+ ** host-defstruct.lisp -> defstruct.lisp
+ ** late-target-type.lisp -> deftypes-for-target.lisp
+ Furthermore, several other previously target-only files foo.lisp (e.g.
+ hash-table.lisp and random.lisp) have been split into a target-and-host
+ foo.lisp file and a target-only target-foo.lisp file, with their key type
+ definitions in the target-and-host part, so that the cross-compiler will
+ know more about target types.
+* DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
+ gone away. In their place are various *BACKEND-FOO* variables
+ corresponding to the slots of the old structure.
+* A bug which caused the SB-COLD bootstrap-time package to be propagated
+ into the target SBCL has been fixed.
+* The chill.lisp system for loading cold code into a running SBCL
+ now works better.
+* Support for the CMU CL "scavenger hook" extension has been removed.
+ (It was undocumented and unused in the CMU CL sources that SBCL was
+ derived from, and stale in sbcl-0.6.1.)
+* Various errors in the cross-compiler type system were detected
+ by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
+ (enabling various consistency checks). Many of them were fixed,
+ but some hard problems remain, so the compiler is back to
+ running without *TYPE-SYSTEM-INITIALIZED* for now.
+* As part of the cross-compiler type system cleanup, I implemented
+ DEF!TYPE and got rid of early-ugly-duplicates.lisp.
+* I have started adding UNCROSS calls throughout the type system
+ and the INFO database. (Thus perhaps eventually the blanket UNCROSS
+ on cross-compiler input files will be able to go away, and various
+ kludges with it).
+* CONSTANTP now returns true for quoted forms (as explicitly required
+ by the ANSI spec).
-changes in sbcl-0.8.3 relative to sbcl-0.8.2:
- * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
- more accurately, on the Darwin kernel running on PowerPC hardware.
- (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
- * Compiler code deletion notes now signal a condition of type
- SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
- an associated MUFFLE-WARNING restart.
- * The compiler now performs limited argument count validation of
- constant format strings in FORMAT, and where appropriate in ERROR,
- CERROR and WARN. (thanks to Gerd Moellmann)
- * New ASDF-INSTALL contrib can be used for automatic download and
- installation of third-party Lisp code from CCLAN or other sites
- via CLiki.
- * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
- which forces another thread to execute a function supplied by the
- caller.
- * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
- now accept and act upon their :ELEMENT-TYPE keyword argument.
- (reported by Martin Atzmueller, Edi Weitz)
- * bug fix: FILE-POSITION now accepts position designators up to
- ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
- is the greater. (thanks to Patrik Nordebo)
- * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
- Kalle Olavi Niemitalo)
- * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
- printable. (reported by Eric Marsden)
- * bug fix in sb-posix: mmap() now works on systems with a 64-bit
- off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
- * x86 bug fix in control stack exhaustion checking: now shows backtrace
- * bug fix in WITH-TIMEOUT: now the body can have more than one form.
- (thanks to Stig Sandoe)
- * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
- UNREAD-CHAR now correctly includes the unread character in the
- target sequence. (thanks to Gerd Moellmann)
- * bug fix in threaded builds: the system can now be suspended and
- resumed by shell job control with minimal disruption.
- * bug fixes in times and timezones >2038AD
- * better handling of "where is GNU make?" problem in build scripts
- (thanks to Nikodemus Siivola)
- * new optimization: inside a named function any reference to a
- function with the same name is considered to be a self-reference;
- this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
- optimization quality.
- * new optimization on x86: logical functions and + now have
- optimized (UNSIGNED-BYTE 32) versions, which are automatically
- used when the result is truncated to 32 bits.
- * VALUES declaration is partially enabled.
- * fixes in SB-GROVEL (thanks to Andreas Fuchs)
- * fixed some bugs revealed by Paul Dietz' test suite:
- ** The system now obeys the constraint imposed by
- UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
- types form a lattice under type intersection.
- ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
- ** ASSOC now ignores NIL elements in an alist.
- ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
- and (1+ MOST-POSITIVE-FIXNUM) answers.
- ** The addition of a method with invalid qualifiers to a generic
- function does not cause an error to be signalled immediately;
- a warning is signalled, and the error is generated only on
- calling the generic function.
- * changed .fasl file version number, in part to add type codes for
- new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
- obscure ANSI requirements
+changes in sbcl-0.6.1 relative to sbcl-0.6.0:
-changes in sbcl-0.8.4 relative to sbcl-0.8.3:
- * incompatible change: The --disable-debugger command line
- option now clobbers the debugger at a more fundamental
- level, by redefining #'INVOKE-DEBUGGER instead of by
- rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
- is specified by ANSI to ignore *DEBUGGER-HOOK* and
- INVOKE-DEBUGGER regardless. Under the old system, BREAK would
- enter the debugger REPL and then suffer recursive errors
- because *DEBUG-IO* is also messed up in --disable-debugger mode;
- while under the new system, BREAK in --disable-debugger mode
- terminates the system just as an unhandled error would.
- * fixed compiler performance when processing loops with a step >1;
- * bug fix: DOCUMENTATION now retrieves generic function
- documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
- support has been systematized, and now supports the methods
- specified by ANSI, along with a default method and a method for
- slot documentation. (reported by Nathan Froyd)
- * bug fix: effective methods associated with a generic function are
- no longer cached over a change of that generic function's method
- combination. (reported by Andreas Fuchs)
- * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
- names a non-existent directory. (thanks to Andreas Fuchs)
- * bug fix: ROUND and TRUNCATE could, under certain circumstances on
- the PPC platform, lead to stack corruption; this has been fixed.
- (reported by Rainer Joswig)
- * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
- no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
- * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
- arithmetic in general, is now much more reliable on the PPC
- platform.
- * optimization: restored some effective method precomputation in
- CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
- precomputation is now tunable.
- * optimization: compiler-internal data structure use has been
- reviewed, and changes have been made that should improve the
- performance of the compiler by about 20%.
- * optimization: performance of FILL (and :INITIAL-ELEMENT) on
- simple-base-strings and simple-bit-vectors is improved.
- * microoptimization: the compiler is better able to make use of the
- x86 LEA instruction for multiplication by constants.
- * bug fix: in some situations compiler did not report usage of
- generic arithmetic in (SPEED 3) policy.
- * bug 145b fix: compiler used wrong type specifier while converting
- MEMBER-types to numeric.
- * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
- McNaught)
- * fixed some bugs revealed by Paul Dietz' test suite:
- ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
- ** ROUND and FROUND now give the right answer when given very
- small float arguments.
- ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
- circumstances.
- ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
- ** (GCD 0 <negative-integer>) returned <negative-integer>.
- ** LCM should return a non-negative integer.
- ** PARSE-INTEGER returned the index of a terminator instead of the
- upper bounding index of a substring in case :JUNK-ALLOWED NIL.
- ** PARSE-INTEGER returned an incorrect index being applied to a
- displaced string.
- ** LCM with two arguments of 0 returns 0 rather than signalling
- DIVISION-BY-ZERO.
- ** unsigned addition of a 32-bit constant with the high bit set no
- longer causes an internal compiler error on the x86.
- ** LOGBITP accepts a non-negative bignum as its INDEX argument.
- ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
- with negative last argument.
- ** byte specifiers with zero size and position no longer cause
- an error during type derivation.
+* changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
+ fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
+ (MAKE-LIST -1). In the longer term, it ought to become true
+ that declarations are assertions even at SAFETY 1. For now, it's not
+ quite true even at SAFETY 3, but it's at least more nearly true..
+ (Note that this change seems to increases the size of the system by
+ O(5%) and to decrease the speed of the compiler by 20% or more.)
+* changed ALIEN printing to be much more abbreviated, as a short-term fix
+ for the problem of printing dozens of lines of distracting information
+ about low-level system machinery as part of the top stack frame
+ on entry to the debugger when an undefined function was called.
+* tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
+ is not reset to COMMON-LISP-USER.
+* Compilation of stuff related to dyncount.lisp has been made conditional
+ on the :SB-DYNCOUNT target feature, so that the ordinary core system is
+ smaller. The various dyncount-related symbols have been moved into
+ a new "SB-DYNCOUNT" package.
+* tty-inspect.lisp has been renamed to inspect.lisp.
+* unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
+ feature has gone away. (When we eventually port to other flavors of
+ libc and/or Unix, we'll try to make the differences between flavors
+ invisible at the user level.)
+* Various other *FEATURES* tags, and/or their associated conditionals,
+ have been removed if obsolescent, or given better documentation, or
+ sometimes given more-mnemonic names.
+
+changes in sbcl-0.6.0 relative to sbcl-0.5.0:
-planned incompatible changes in 0.8.x:
- * (not done yet, but planned:) When the profiling interface settles
- down, it might impact TRACE. They both encapsulate functions, and
- it's not clear yet how e.g. UNPROFILE will interact with TRACE
- and UNTRACE. (This shouldn't matter, though, unless you are using
- profiling. If you never profile anything, TRACE should continue to
- behave as before.)
- * (not done yet, but planned:) Inlining can now be controlled the
- ANSI way, without MAYBE-INLINE, since the idiom
- (DECLAIM (INLINE FOO))
- (DEFUN FOO (..) ..)
- (DECLAIM (NOTINLINE FOO))
- (DEFUN BAR (..) (FOO ..))
- (DEFUN BLETCH (..) (DECLARE (INLINE FOO)) (FOO ..))
- now does what ANSI says it should. The CMU-CL-style
- SB-EXT:MAYBE-INLINE declaration is now deprecated and ignored.
+* tidied up "make.sh" script
+* tidied up system directory structure
+* better "clean.sh" behavior
+* added doc/FOR-CMUCL-DEVELOPERS
+* many many small tweaks to output format, e.g. removing possibly-confusing
+ trailing #\. character in DESCRIBE-INSTANCE
+* (EQUALP #\A 'A) no longer signals an error.
+* new hashing code, including EQUALP hashing
+* tidied up Lisp initialization and toplevel
+* initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
+* command line argument processing
+* added POSIX-GETENV function to deal with Unix-ish environment variables
+* more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
+ terminating SBCL on EOF
+* non-verbose GC by default
+* There is no more "sbcl" shell script; the sbcl file is now the C
+ runtime executable (just like CMU CL).
+* removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
+ FOP-POP-FOR-EFFECT
+* tweaked debug-info.lisp and debug-int.lisp to make the debugger store
+ symbol and package information as Lisp native symbol and package objects
+ instead of strings naming symbols and strings naming packages. This way,
+ whenever packages are renamed (as in warm init), debug information is
+ transformed along with everything else.
+* tweaked the optimization policy declarations which control the building
+ of SBCL itself. Now, among other things, the system no longer saves
+ source location debugging information. (This helps two problems at once
+ by reducing SBCL size and by keeping SBCL from trying to look for its
+ sources -- which may not exist -- when reporting errors.)
+* added src/cold/chill.lisp, to let SBCL read its own cold sources for
+ debugging and testing purposes
+* cleaned up printing, making the printer call PRINT-OBJECT for
+ instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
+ methods, giving nearly-ANSI behavior
+* converted almost all special variables to use *FOO* naming convention
+* deleted PARSE-TIME functionality, since it can be done portably
+* moved some files out of cold init into warm init
+* deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
+ with (VALUES) forms
+* regularized formatting of source files
+* added an install.sh script
+* fixed ridiculous memory usage of cross-compiler by making
+ compiler/alloc.lisp not try to do pooling unless it can hook
+ itself into the GC of the cross-compilation host. Now the system
+ builds nicely on my old laptop.
+* added :SB-ALLOC in target-features.lisp-expr
+* deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
+ was not implemented)
+* re-did condition handling and note reporting in the compiler. Notes
+ are no longer handled by signalling conditions. Style warnings
+ and warnings are handled more correctly and reported in such a way
+ that it's easy to find one or the other in your output (so that you
+ can e.g. figure out which of many problems caused COMPILE-FILE to
+ return FAILURE-P).
+* changed the severity of several compiler warnings from full WARNING
+ to STYLE-WARNING in order to conform with the ANSI spec; also changed
+ compiler note reporting so that it doesn't use the condition system
+ at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
+ COMPILE-FILE command)
+* made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
+ function. As a consequence, START-BLOCK and END-BLOCK declarations are
+ no longer supported, since their implementation was deeply intertwingled
+ with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
+* removed bogus "support" for compiler macros named (SETF FOO), and
+ removed the compiler macro for SETF INFO (but only after making a fool
+ of myself on the cmucl-imp mailing list by posting a bogus patch for
+ DEFINE-COMPILER-MACRO..)
+* Compiled files containing forms which have side effects on the Lisp
+ reader (such as DEFPACKAGE forms) are now handled more correctly.
+ (Compiler queuing of top level lambdas has been suppressed by setting
+ *TOP-LEVEL-LAMBDA-MAX* to 0. )
+* deleted various currently-unused source files, e.g. gengc.lisp. They
+ may be added back at some point e.g. when porting to other architectures,
+ but until they are it's distracting to distribute them and to try to
+ maintain them.
+* deleted "UNCROSS couldn't recurse through.." style warnings, since
+ there were so many of them they're just distractions, and UNCROSS is
+ known to be able to handle the current sources
+* moved PROFILE functionality into TRACE, so that it will be clear
+ how the wrapping and unwrapping of functions when you profile them
+ interacts with the wrapping and unwrapping of functions when you
+ trace them. (Actually, the functionality isn't there yet, but at least
+ the interface specification is there. Hopefully, the functionality will
+ arrive with some future maintenance release.)
+* removed host-oops.lisp
+* changed signature of QUIT function to allow UNIX-CODE argument
+* fixed READ-SEQUENCE bug
+* tweaked verbose GC output so that it looks more like the progress
+ output that ANSI specifies for functions like LOAD
+* set up the system on sourceforge.com, with home pages, mailing lists, etc.
+* added <http://sbcl.sourceforge.com> to the banner information printed by
+ the sbcl executable
projects / sbcl.git / blobdiff