gcc/testsuite/gcc.dg/pr54921.c

   1 /* PR rtl-optimization/54921 */
   2 /* { dg-do run } */
   3 /* { dg-options "-Os -fno-omit-frame-pointer -fsched2-use-superblocks -ftree-slp-vectorize" } */
   4 /* { dg-additional-options "-fstack-protector" { target fstack_protector } } */
   5
   6 struct A
   7 {
   8   int a;
   9   char b[32];
  10 } a, b;
  11
  12 __attribute__((noinline, noclone))
  13 struct A
  14 bar (int x)
  15 {
  16   struct A r;
  17   static int n;
  18   r.a = ++n;
  19   __builtin_memset (r.b, 0, sizeof (r.b));
  20   r.b[0] = x;
  21   return r;
  22 }
  23
  24 int
  25 main ()
  26 {
  27   a = bar (3);
  28   b = bar (4);
  29   if (a.a != 1 || a.b[0] != 3 || b.a != 2 || b.b[0] != 4)
  30     __builtin_abort ();
  31   return 0;
  32 }