gcc/testsuite/gcc.dg/pr103184-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2" } */
   3
   4 #include <stdatomic.h>
   5
   6 int
   7 tbit0 (_Atomic int* a, int n)
   8 {
   9 #define BIT (0x1 << n)
  10   return atomic_fetch_or (a, BIT) & BIT;
  11 #undef BIT
  12 }