(> 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)
+ ** 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.)
- ?? TRACE :ENCAPSULATE T now attaches a more informative debug
- name to its wrapper function objects than it used to
+
+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-0.7.4 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-0.7.5 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-0.7.6 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-0.7.7 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-0.7.8 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-0.7.9 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-0.7.10 relative to sbcl-0.7.9:
+ * 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.
+ * 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;
+ * 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-package does not require a package to be explicitely
+ specified;
+ * 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)
planned incompatible changes in 0.7.x:
* When the profiling interface settles down, maybe in 0.7.x, maybe
projects / sbcl.git / blobdiff