gcc/testsuite/gcc.c-torture/compile/pr37056.c

   1 /* { dg-skip-if "ptxas times out" { nvptx-*-* } { "-O2" "-Os" } { "" } } */
   2 extern void abort (void);
   3
   4 static union {
   5     char buf[12 * sizeof (long long)];
   6 } u;
   7
   8 int main ()
   9 {
  10   int off, len, i;
  11   char *p, *q;
  12
  13   for (off = 0; off < (sizeof (long long)); off++)
  14     for (len = 1; len < (10 * sizeof (long long)); len++)
  15       {
  16         for (i = 0; i < (12 * sizeof (long long)); i++)
  17           u.buf[i] = 'a';
  18         p = (__extension__ (__builtin_constant_p ('\0') && ('\0') == '\0'
  19                             ? ({void *__s = (u.buf + off); __s;})
  20                             : __builtin_memset (u.buf + off, '\0', len)));
  21         if (p != u.buf + off)
  22           abort ();
  23         for (i = 0; i < off; i++, q++)
  24           if (*q != 'a')
  25             abort ();
  26       }
  27   return 0;
  28 }
  29