[Patch] Missed evaluation in "type" parameter of va_arg

[Rahul Jain]

Gentle ping!


On Sun, Mar 16, 2014 at 11:01 PM, Rahul Jain <1989.rahuljain at gmail.com>wrote:

>
> Hi All,
>
> clang -v
>
> clang version 3.5.0 (204017)
>
> Target: x86_64-apple-darwin13.1.0
> Thread model: posix
>
> This is with respect to the following tc from gcc test suite:
>
> #include <stdarg.h>
>
>
> extern void exit (int);
>
> extern void abort (void);
>
>
> int a[10];
>
> int i = 9;
>
>
> void
>
> f (int n, ...)
>
> {
>
>   va_list ap;
>
>   void *p;
>
>   va_start (ap, n);
>
>   p = va_arg (ap, typeof (int (*)[++i]));
>
>   if (p != a)
>
>     abort ();
>
>   if (i != n)
>
>     abort ();
>
>   va_end (ap);
>
> }
>
>
> int
>
> main (void)
>
> {
>
>   f (10, &a);
>
>   exit (0);
>
> }
>
>
> clang fails to emit code for increment operation done in the call to
> va_arg.
>
> I have attached a patch which fixes the same.
>
> Please if someone could help in reviewing it.
>
>
> Also it would be great if someone could help/redirect me, as to what is
> the format
>
> used by to add regression test cases testing runtime behaviour of a tc?
>
>
> Thanks,
>
> Rahul
>
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