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