[Gcl-devel] Re: CALL-ARGUMENTS-LIMIT and other things

[Paul F. Dietz]

Mike Thomas wrote:
> Hi Camm.
>
> 1. While trawling through the ANSI tester output a few days ago I noticed
> that call-arguments-limit (set to 64) conflicts with the test in "eval.c"
> based on the C macro MAX_ARGS (63) defined in "h/funlink.h".
>
> I played it safe and set call-arguments-limit to MAX_ARGS (in "eval.c")
> which I left at 63.  This fixed the failure of SUBTRACT.3 in the ANSI tests:
>
> (LET ((ARGS NIL))
>         (LOOP
>           FOR
>           I
>           FROM
>           1
>           TO
>           (MIN 256 (1- CALL-ARGUMENTS-LIMIT))
>           DO
>           (PUSH 1 ARGS)
>           ALWAYS
>           (EQL (APPLY #'- 1000 ARGS) (- 1000 I))))
>
> but is not necessarily a high quality design decision.  I also set
> LAMBDA-PARAMETERS-LIMIT to MAX_ARGS.


Looking at that, the test seems wrong -- it passes CALL-ARGUMENTS-LIMIT
args to -, but that constant is an *exclusive* upper bound.

        Paul