Planet SBCL Archives - April, 2026

April, 2026

April, 2026

1st

[2147050] Inefficient code for a function with a keyword argument - Launchpad Bugs
Smaller type testing of function for call-symbol - SBCL Commits
x86-64: smaller (funcall (or null function)) - SBCL Commits

2nd

Maybe fix join-equality-constraints - SBCL Commits
find-or-create-equality-constraint: use vector-length as a key - SBCL Commits

3rd

Unroll more things for (equal x '(y)) - SBCL Commits
Move print-object on sb-pcl::cache near its defstruct - SBCL Commits
Enable a test file for mark-region which passes now - SBCL Commits
Enable sb-profile test for mark-region - SBCL Commits
Avoid calling cache-statistics function - SBCL Commits

4th

Rename call-static-fun to call-lisp-fun - SBCL Commits

5th

Expose a much simplified utf8-to-string decoder - SBCL Commits
Decode utf8 from C - SBCL Commits
Remove dump-segment, fold it into dump-code-object - SBCL Commits

6th

Implement a SIGSEGV mitigation strategy for tls-load-indirect - SBCL Commits
Mostly combine all definitions of arch_get_bad_address into one - SBCL Commits
Rename DSD-READER to DSD-PRIMITIVES - SBCL Commits
Fix ppc64 build - SBCL Commits
Change HW to SW card marking on immobile layout pages - SBCL Commits
[2147383] The value NIL is not of type SB-C::LVAR - Launchpad Bugs
[2147384] Compiler error in call to MAKE-ARRAY with invalid array dims - Launchpad Bugs
[2147385] failed AVER: (AND (EQ (CTRAN-KIND START) INSIDE-BLOCK) (NOT (BLOCK-DELETE-P BLOCK))) - Launchpad Bugs

7th

ir1-optimize-combination: stop if the node is deleted in derive-type - SBCL Commits
Transform (replace simple-vector list) with :start1/:end1 - SBCL Commits
map-refs: protect against unused results - SBCL Commits
check-array-dimensions: be ready for a mv-combination - SBCL Commits
Don't create an extra cons in (concatenate 'list ...) - SBCL Commits
Faster (concatenate 'vector ..) for list arguments - SBCL Commits
[2147399] SBCL searching for source code - Launchpad Bugs
Correct some obsolete bit-masking steps - SBCL Commits
Move some things - SBCL Commits
Fix mark-region with permgen - SBCL Commits
Use soft card marking on all fixedobj pages - SBCL Commits
Remove stray line noticed by reviewer - SBCL Commits
Put back DSD-READER but only for structure-object - SBCL Commits
Remove another misuse of (DECLARE SPECIAL) for #+tls-load-indirect - SBCL Commits

8th

Optimize (BOUNDP 'known-symbol) if #+tls-load-indirect - SBCL Commits
Fix EQUALP to EQUAL lowering for constant dotted lists - SBCL Commits
Better type derivation (truncate x integer-union-with-zero) - SBCL Commits
Tidy up some type specifiers - SBCL Commits
Remove ENABLE_PAGE_PROTECTION choice from immobile-space - SBCL Commits
Halve the size of immobile cards - SBCL Commits
Fix coerce compile-time checking - SBCL Commits
x86-64: fix dynbind for -sb-thread - SBCL Commits
Make DEFSETF warn a bit more like DEFMACRO - SBCL Commits
Improve SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME error handling - SBCL Commits
Don't put bounds into the complex type for (complex float) - SBCL Commits
Lower more things to from EQUALP to EQUAL - SBCL Commits
Warn about integer division by zero - SBCL Commits
Handle division by zero when deriving (/ integer integer) - SBCL Commits
Exclude zeros when deriving truncate types - SBCL Commits
Better types for (floor/ceiling (integer -5 5) integer) - SBCL Commits
Fix a test - SBCL Commits
Don't return the data vector from (replace complex-vector list) - SBCL Commits

9th

Fix ash-modfx constant folding - SBCL Commits
[2147609] Graphic characters are printed by name when *PRINT-READABLY* is true - Launchpad Bugs
[2147641] sbcl.o/libsbcl.a/libsbcl.so include main(), preventing embedding with custom main() - Launchpad Bugs
[2147646] define-alien-routine stores character-string in linkage table, breaks :elf-object save - Launchpad Bugs
Base-stringize alien linkage table names - SBCL Commits
Cons nothing for alien linkage entries that exist - SBCL Commits
Remove a hack from src/code/signal - SBCL Commits
Avoid certain TLS load traps - SBCL Commits
Propagate that after (/= (rem n d) 0) D is (not (integer -1 1)) - SBCL Commits
Tidy up the definition of *FINITE-SBS* - SBCL Commits

10th

More compact ROUND for integers - SBCL Commits
Narrow the type of (truncate n d) based on the remainder - SBCL Commits
[2147677] sigprof_handler can crash on forwarding pointers - Launchpad Bugs
x86-64: Rearrange CAS vops for SYMBOL-[GLOBAL-]VALUE - SBCL Commits
Make main() a weak symbol for linkable runtime - SBCL Commits
Fix win32 build - SBCL Commits
Check types for standalone byte, byte-size, byte-position - SBCL Commits
Check for integers in array-in-bounds-p - SBCL Commits
Check types in broadcast-stream output routines - SBCL Commits
Check for characters in unread-char - SBCL Commits
Ensure the types are checked in the set functions - SBCL Commits
Actually fix check-coerce - SBCL Commits
Better ftype for compiler-macro-function - SBCL Commits
Return one value from (list* (values 1 2)) - SBCL Commits
More type checks for the stream functions - SBCL Commits
Return one value from (append/nconc (values 1 2)) - SBCL Commits
/=: check all arguments for NUMBER before returning NIL - SBCL Commits
find-class: check that the name is a symbol even when errorp is nil - SBCL Commits
Return early from set-exclusive-or if one of the arguments is NIL - SBCL Commits
Out of line some/every: check if the function is defined early - SBCL Commits
char/=: check all arguments for CHARACTER before returning NIL - SBCL Commits

11th

[2148056] Nontermination from compiler - Launchpad Bugs
Don't endlessly bounce between ash and logand transforms - SBCL Commits

12th

Remove cold-fixup function - SBCL Commits

13th

sb-ext:process-kill: remove the option to use :pty-process-group - SBCL Commits
Remove closed processes from *active-processes* - SBCL Commits
run-program: escape empty strings on windows - SBCL Commits
pathnames: mind escape-char when processing [] - SBCL Commits
pathnames: fix dot escaping with multiple preceding escapes - SBCL Commits
pathnames: correctly escape dots in the middle of a pattern - SBCL Commits
Clean up sap-foreign-symbol - SBCL Commits
Do some more renaming - SBCL Commits

14th

x86-64: Rearrange the alien linkage table - SBCL Commits
Use a global list to hold disassembler instructions - SBCL Commits
Mention foreign-symbol-address less - SBCL Commits
Delete alien-linkage-value macro - SBCL Commits
sb-vm:new-arena: move the docstring to the right place - SBCL Commits
constant-fold-call: call lvar-value with ignore-types=t - SBCL Commits
[2148364] signal-corrupt-hash-table from remhash/weak - Launchpad Bugs
Make fun-name-hashset more hashy - SBCL Commits

15th

unix-fast-select: allow select on FD_SETSIZE - 1 - SBCL Commits
Check that fd-set/fd-clr don't overflow fd-setsize - SBCL Commits
Better predicates for named list structures - SBCL Commits
Fix an error message from DEFSTRUCT - SBCL Commits
Remove unnecessary WHEN and LET - SBCL Commits
defstruct: disallow (:initial-offset nil) - SBCL Commits
Transform delete-if-not - SBCL Commits
alloc-buffer: check the type of size once - SBCL Commits
Permute FDEFN slots for #+linkage-space - SBCL Commits
Undo a couple lines of prior change - SBCL Commits

16th

(setf readtable-base-char-preference): assert-not-standard-readtable - SBCL Commits
Don't lose :character-set when changing pathname case - SBCL Commits
Remove a redundant check from unparse-physical-enough - SBCL Commits
Accept immediate sc in symbol-global-value - SBCL Commits

17th

Warn about bad subseq ranges after transforming (concatenate .. (subseq ..)) - SBCL Commits

18th

[2148729] sort function : loss of elements of the sequence - Launchpad Bugs
[2148749] position does not error on explicit :test nil unlike member - Launchpad Bugs
arm64: fix undefined restarts for call-symbol - SBCL Commits

19th

Show raw constants of :DWORD or :QWORD size - SBCL Commits
Don't forget NIL - SBCL Commits
x86-64: TRUNCATE using the Lemire, Kaser, Kurz transform - SBCL Commits
[2148777] Compiler error: don't know how to dump SB-KERNEL:NUMERIC-UNION-TYPE - Launchpad Bugs
check-type: don't include ctypes in the expansion - SBCL Commits
[2148778] Type error in SB-C::NUMERIC-TYPE->INTERVAL - Launchpad Bugs
Defensively code in type-width-in-bits - SBCL Commits
[2148782] Incorrect value computed (ROUND, CEILING) - Launchpad Bugs
x86-64/truncate-c: correctly determine if the quotient is unused - SBCL Commits
Implement choice of using fastrem in IR1 transform - SBCL Commits

20th

Transform floor/ceiling to truncate when used as a divisibility test - SBCL Commits
[2148799] The value NIL is not of type SB-C::LVAR - Launchpad Bugs
let-lvar-dest: ignore NIL lvars - SBCL Commits
Typos - SBCL Commits
Address a FIXME in emit-inline-add-sub - SBCL Commits
x86-64: fix mask-signed-field-integer for 64 and any-reg result - SBCL Commits
arm64: fix a potential issue with fast-ash-c/signed=>signed - SBCL Commits
arm64: use the right register in ash-inverted - SBCL Commits

21st

Typos in arm64/float.lisp - SBCL Commits

22nd

x86-64: use xorps for conjugate/complex-single-float - SBCL Commits
Delete immobile space sigsegv handler - SBCL Commits
Fix logtest on ppc64 - SBCL Commits

23rd

arm64: fix alien-struct-by-value copying - SBCL Commits
arm64, struct-by-value: look at the stack when running out of GPRs - SBCL Commits
arm64, struct-by-value: correctly pass small structs on the stack - SBCL Commits
x86-64, struct-by-value: correctly pass small structs on the stack - SBCL Commits
arm64, struct-by-value: don't consume gprs when running out of fprs - SBCL Commits
arm64, struct-by-value: don't read past the input struct - SBCL Commits
arm64, struct-by-value: don't split stack/registers in callbacks - SBCL Commits
arm64, callbacks: return float results in the right register - SBCL Commits
x86-64, struct-by-value: correctly pass small structs on the stack - SBCL Commits
arm64: don't do (ldrsw (32-bit-reg x) ..) - SBCL Commits
x86-64, struct-by-value: fix record-arg-tn for win32 - SBCL Commits

24th

Persist the :ucrt feature, if present, into the final image - SBCL Commits
Resolve a loop in constraints - SBCL Commits

25th

tests: struct-by-value parameter overread - SBCL Commits
x86-64, struct-by-value: don't read past input struct - SBCL Commits
x86-64, struct-by-value: leave registers if a struct doesn't fit - SBCL Commits

26th

Improve RELEASE-MUTEX docstring - SBCL Commits
Fix strange comment - SBCL Commits
struct-by-value: don't overwrite when copying values from registers to memory - SBCL Commits
tests: failing overwrite cases - SBCL Commits
x86-64, struct callbacks: leave registers if a struct doesn't fit - SBCL Commits
x86-64, struct-by-value: prevent overwrites when copying during callbacks - SBCL Commits

27th

x86-64, struct-by-value: correct ABI classification for nested structs - SBCL Commits
Revert "Persist the :ucrt feature, if present, into the final image" - SBCL Commits
First draft of NEWS for sbcl-2.6.4 - SBCL Commits
[2150499] sb-posix: fix termios layout on BSD - Launchpad Bugs
x86-64, struct-by-value: coordinate arglist transforms - SBCL Commits

28th

Fix input-manifest - SBCL Commits
Disable a test - SBCL Commits
Add c_ispeed and c_ospeed fields to sb-posix:termios - SBCL Commits
Skip a test - SBCL Commits
fixes to NEWS - SBCL Commits
Spell-check NEWS - SBCL Commits

29th

2.6.4: will be tagged as "sbcl-2.6.4" - SBCL Commits
sb-eval: check eval-when syntax - SBCL Commits
sb-eval: don't accept (lambda non-list) - SBCL Commits
sb-grovel: don't add trailing zero-length padding - SBCL Commits
Reverse an accidental change. - SBCL Commits

30th

Delete useless test - SBCL Commits
Reimplement low-level logging - SBCL Commits
Hoist with-pinned-objects out of a loop - SBCL Commits
Fix map-packed-xref-data - SBCL Commits
find-definition-sources-by-name: find alien callbacks - SBCL Commits
describe: alien types and callbacks - SBCL Commits
Test the new :alien-callback definition type in sb-introspect - SBCL Commits
Test the previous-relative encoding of xref form-number - SBCL Commits
Use a barrier instead of CAS in mutex-owner - SBCL Commits
Balance out threads.pure test times - SBCL Commits
Add some remarks and a utility function - SBCL Commits
Replace a bunch of AVERs with better types - SBCL Commits