gcc/testsuite/gcc.dg/pr52734.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2" } */
   3
   4 int bbb = 0;
   5
   6 int __attribute__((noinline,noclone)) aaa(void)
   7 {
   8     ++bbb;
   9     return 0;
  10 }
  11
  12 int __attribute__((noinline,noclone)) ccc(void)
  13 {
  14   int ddd;
  15   /* bbb == 0 */
  16   if (aaa())
  17     return bbb;
  18
  19   /* bbb == 1 */
  20   ddd = bbb;
  21   /* bbb == ddd == 1 */
  22   if (aaa ())
  23     return 0;
  24   /* bbb == 2, ddd == 1 */
  25
  26   return ddd;
  27 }
  28
  29 int main(void)
  30 {
  31     if (ccc() != 1)
  32         __builtin_abort();
  33     return 0;
  34 }
  35