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List:       pcc-list
Subject:    Re: x86 local.c clocal and C99
From:       Otto Moerbeek <otto () drijf ! net>
Date:       2007-09-26 11:18:25
Message-ID: Pine.BSO.4.64.0709261316570.23018 () lou ! intra ! drijf ! net
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On Wed, 26 Sep 2007, TAKAHASHI Tamotsu wrote:

> Hi,
> Thanks for your great work!
> Here is another bug report.
> 
> Synopsis: Compile error with variable-length array
> Priority: low
> Standard: C99
> 
> This C99 program causes cerror("bad conversion"):
> 
> int main(void) {
> 	int n=1;
> 	int a[1][n];
> 	a[0][0]=1; /* this line */
> 	return 0;
> }
> 
> and this diff makes it work:
> 
> --- arch/x86/local.c	24 Sep 2007 17:56:17 -0000	1.3
> +++ arch/x86/local.c	25 Sep 2007 12:41:17 -0000
> @@ -280,7 +280,7 @@ clocal(NODE *p)
>  
>  	case PMCONV:
>  	case PVCONV:
> -                if( p->n_right->n_op != ICON ) cerror( "bad conversion", 0);
> +                if( p->n_right->n_op != ICON ) werror( "bad conversion", 0);
>                  nfree(p);
>                  return(buildtree(o==PMCONV?MUL:DIV, p->n_left, p->n_right));
>  
> 
> In fact, the corresponding cerror in arch/pdp10/local.c
> is commented out.

I'd say nothing is wrong with the test case, so pcc should not issue
any message. 

	-Otto

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