gcc/testsuite/gcc.c-torture/execute/20070824-1.c

   1 /* PR tree-optimization/33136 */
   2
   3 extern void abort (void);
   4
   5 struct S
   6 {
   7   struct S *a;
   8   int b;
   9 };
  10
  11 int
  12 main (void)
  13 {
  14   struct S *s = (struct S *) 0, **p, *n;
  15   for (p = &s; *p; p = &(*p)->a);
  16   n = (struct S *) __builtin_alloca (sizeof (*n));
  17   n->a = *p;
  18   n->b = 1;
  19   *p = n;
  20
  21   if (!s)
  22     abort ();
  23   return 0;
  24 }