gcc/testsuite/c-c++-common/guality/Og-dce-2.c

   1 /* { dg-do run } */
   2 /* { dg-options "-g" } */
   3
   4 struct s { int a, b, c, d; };
   5
   6 struct s gs1 = { 1, 2, 3, 4 };
   7 struct s gs2 = { 5, 6, 7, 8 };
   8
   9 struct s *__attribute__((noipa)) consume (struct s *ptr) { return ptr; }
  10
  11 int
  12 main (void)
  13 {
  14   struct s x;
  15   struct s *volatile ptr = consume (&x);
  16   x = gs1;
  17   x = gs2;      /* { dg-final { gdb-test . "ptr->a" "1" } } */
  18   return 0;     /* { dg-final { gdb-test . "ptr->a" "5" } } */
  19 }