Re: Bug: full call to SB-C::ASH-INTO-WORD-MOD

Fixed. Thanks.

On Sun, Dec 7, 2025 at 2:02 PM Eric Marsden via Sbcl-devel
<[email protected]> wrote:
>
> Hi,
>
>  From random-integer testing on AMD64.
>
> * (lisp-implementation-version)
> "2.5.11.45-0b8038d3d"
> * (defun foo (a b)
>      (logbitp 3
>               (when a
>                 (ash (loop for i below 0 sum 1)
>                      (dotimes (i 1 -5) b)))))
>
> ; in: DEFUN FOO
> ;     (SB-INT:NAMED-LAMBDA FOO
> ;         (A B)
> ;       (BLOCK FOO (LOGBITP 3 (WHEN A (ASH # #)))))
> ;
> ; caught STYLE-WARNING:
> ;   The variable B is defined but never used.
>
> ;     (ASH
> ;      (LOOP FOR I BELOW 0
> ;            SUM 1)
> ;      (DOTIMES (I 1 -5) B))
> ;
> ; caught STYLE-WARNING:
> ;   Lisp error during constant folding:
> ;   The function SB-C::ASH-INTO-WORD-MOD is undefined.
>
> debugger invoked on a SB-INT:BUG in thread
> #<THREAD tid=102385 "main thread" RUNNING {1200BF0003}>:
>      full call to SB-C::ASH-INTO-WORD-MOD
>    This is probably a bug in SBCL itself. (Alternatively, SBCL might
> have been
>    corrupted by bad user code, e.g. by an undefined Lisp operation like
>    (FMAKUNBOUND 'COMPILE), or by stray pointers from alien code or from
> unsafe
>    Lisp code; or there might be a bug in the OS or hardware that SBCL is
> running
>    on.) If it seems to be a bug in SBCL itself, the maintainers would
> like to
>    know about it. Bug reports are welcome on the SBCL mailing lists,
> which you
>    can find at <http://sbcl.sourceforge.net/>.
>
>
>
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