From: Mathieu Bouchard <matju@...>
Date: 2006-10-07T12:52:58+09:00
Subject: Re: argument passing bug

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On Fri, 6 Oct 2006, Mathieu Bouchard wrote:
> ruby -e 'def foo(*x) x end; puts foo(*[42]*666).length'
> #=3D> 156
> the argument count behaves almost mod 255. (why?)

It's because,

1.892 (matz 09-Jun-06):     if (argc >=3D 256) {
1.874 (matz 03-Feb-06):      VALUE tmp;
1.874 (matz 03-Feb-06):      VALUE *nargv;
1.892 (matz 09-Jun-06):      int n =3D argc / 256 - 1;
1.874 (matz 03-Feb-06):
1.892 (matz 09-Jun-06):      argc %=3D 256;
1.892 (matz 09-Jun-06):      tmp =3D svalue_to_avalue(argv[argc]);
1.892 (matz 09-Jun-06):      nargv =3D TMP_ALLOC(argc + RARRAY(tmp)->len +=
=20
n);
1.874 (matz 03-Feb-06):      MEMCPY(nargv, argv, VALUE, argc);
1.874 (matz 03-Feb-06):      MEMCPY(nargv+argc, RARRAY(tmp)->ptr, VALUE,=20
RARRAY(tmp)->len);
1.892 (matz 09-Jun-06):      MEMCPY(nargv + argc + RARRAY(tmp)->len, argv=
=20
+ argc + 1, VALUE, n);
1.892 (matz 09-Jun-06):      argc +=3D RARRAY(tmp)->len + n;
1.874 (matz 03-Feb-06):      argv =3D nargv;
1.874 (matz 03-Feb-06):     }

cvs annotate -D 2006-06-12 eval.c |less

to correct the problem, do cvs update -D 2006-06-08

  _ _ __ ___ _____ ________ _____________ _____________________ ...
| Mathieu Bouchard - t=E9l:+1.514.383.3801 - http://artengine.ca/matju
| Freelance Digital Arts Engineer, Montr=E9al QC Canada
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