Re: [Sbcl-help] [Sbcl-devel] FSet bug/question

[Christophe R. <cs...@ca...>]

Daniel Herring <dhe...@te...> writes:

> ; in: DEFUN TEST-TUPLE-OPERATIONS
> ;     (FSET::LENGTH FSET::TUPLE-KEYS)
> ; --> LET IF
> ; ==>
> ;   0
> ;
> ; caught WARNING:
> ;   This is not a (OR (SINGLE-FLOAT (0.0)) (DOUBLE-FLOAT (0.0d0)) (INTEGER 1)):
> ;     0
> ;   See also:
> ;     The SBCL Manual, Node "Handling of Types"

This is partly an instance of bug #117 (see the BUGS file) and partly
telling you something vaguely useful: if (LENGTH TUPLE-KEYS) returns
0, then the call to RANDOM will be an error (because (RANDOM 0) is not
valid code).  This shows up in this code, I think, because you have
shadowed LENGTH with something with an inline expansion.

Best,

Christophe