gcc/testsuite/gcc.c-torture/execute/20060930-2.c

   1 /* PR middle-end/29272 */
   2
   3 extern void abort (void);
   4
   5 struct S { struct S *s; } s;
   6 struct T { struct T *t; } t;
   7
   8 static inline void
   9 foo (void *s)
  10 {
  11   struct T *p = s;
  12   __builtin_memcpy (&p->t, &t.t, sizeof (t.t));
  13 }
  14
  15 void *
  16 __attribute__((noinline))
  17 bar (void *p, struct S *q)
  18 {
  19   q->s = &s;
  20   foo (p);
  21   return q->s;
  22 }
  23
  24 int
  25 main (void)
  26 {
  27   t.t = &t;
  28   if (bar (&s, &s) != (void *) &t)
  29     abort ();
  30   return 0;
  31 }