gcc/testsuite/gcc.dg/torture/20090618-1.c

   1 /* { dg-do run } */
   2 /* { dg-skip-if "" { *-*-* } { "-O0" } { "" } } */
   3
   4 extern void abort (void);
   5
   6 struct X { int *p; int *q; };
   7
   8 int foo(void)
   9 {
  10   int i = 0, j = 1;
  11   struct X x, y;
  12   int **p;
  13   y.p = &i;
  14   x.q = &j;
  15   p = __builtin_mempcpy (&x, &y, sizeof (int *));
  16   return **p;
  17 }
  18
  19 int main()
  20 {
  21   if (foo() != 1)
  22     abort ();
  23   return 0;
  24 }