NOTE: There is a known bug that affects behaviour of FILL on 64 bit
platforms when the first argument is a specialized array of element
type (COMPLEX SINGLE-FLOAT). If this affects you, you can either
download the file fill-patch-for-1.0.29.lisp from the Sourceforge
release area, or wait the CVS version 22.214.171.124 or thereabouts, where
the fix will be included.
changes in sbcl-1.0.29 relative to 1.0.28:
* IMPORTANT: bug database has moved from the BUGS file to Launchpad
Bugs can be reported directly there, or by sending email to
(no subscription required.)
* minor incompatible change: under weak type checking policy integer
types are weakened less aggressively.
* minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
allowed to return, which causes SBCL to quit with exit status 0. Previously
if the function returned with a small integer return value, that value
was accidentally reused as the exit status.
* new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
:HASH-FUNCTION argument. Refer to user manual for details.
* new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
* new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
microseconds since the Unix epoch on all platforms.
* new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
allows the compiler to safely elide boundedness checks for special
* new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
the symbol, prohibits both lexical and dynamic binding. This is mainly an
efficiency measure for threaded platforms, but also valueable in
* new feature: UNC pathnames are now understood by the system on Windows.
* optimization: the compiler uses a specialized version of FILL when the
element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
almost 90% faster.
* optimization: accesses to potentially non-simple arrays where element type
is known are 50% faster.
* optimization: compiler now generates faster array typechecking code.
* optimization: ARRAY-DIMENSION is now faster for multidimensional and
* optimization: multidimensional array accesses in the absence of type
information regarding array rank are approximately 10% faster due to
open coding of ARRAY-RANK.
* optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
(MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
form can be.
* optimization: result of call to VECTOR can now be stack allocated.
* optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
as long as the resulting array is one-dimensional and has a known
element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
length of the list matches the known length of the vector does not
allocate the list as an intermediate step. Ditto for VECTOR and simple
* optimization: MAKE-ARRAY can now stack allocate in the presence of
:INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
known element type, and is known to be simple and one dimensional.
* improvement: SBCL now emits a compiler note where stack allocation was
requested but could not be provided (not in all cases, unfortunately)
* improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
* improvement: pretty-printing loop has been implemented properly. (thanks
to Tobias Rittweiler)
* documentation: CLOS slot typechecing policy has been documented.
* bug fix: FILE-AUTHOR no longer signals an error on Windows.
* bug fix: SB-SPROF could be foiled by foreign code not have a frame
pointer, leading to memory faults. (thanks to Bart Botta)
* bug fix: better floating point exception handling on x86/OpenBSD.
(thanks to Josh Elsasser)
* bug fix: exit status from QUIT when called under --script was lost
(reported by Hubert Kauker)
* bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
same implementation of FILL to initialize the array, even if a more
efficient one was available (reported by Stas Boukarev, thanks to
* bug fix: potential miscompilation of array stack allocation on x86 and
x86-64. (reported by Time Tossavainen)
* bug fix: some forms of AND, OR, and COND resulted in expansions that could
result in their subforms being treated as top level forms. (reported by
* bug fix: On x86/x86-64 alien functions declared to return integers shorter
than a machine register could leave garbage in the high bits of the
result register (bug 316325).
* bug fix: disable address space randomization Linux/x86-64 as well,
not just x86-64. (reported by Ken Olum)
* bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
generate incorrect code.
* bug fix: #201; type inference for CONS and ARRAY types could derive
wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
* bug fix: special variables with a proclaimed specific subtype of FUNCTION
could not be assigned to or bound with PROGV. (reported by Lorenz
* bug fix: the value of CL:- in the inspector was the previous expression
evaluated rather than the expression being evaluated.
* bug fix: constants can no longer be locally declared special.
* bug fix: signals delivered to threads started from foreign land (read:
directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
thread by blocking all signals and resignalling.
* bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
from :INITFORM, if any.