gcc/testsuite/gcc.target/i386/pr77991.c

   1 /* { dg-do compile { target { ! ia32 } } } */
   2 /* { dg-require-effective-target maybe_x32 } */
   3 /* { dg-options "-O2 -mx32 -maddress-mode=short" } */
   4
   5 struct rcu_reader_data
   6 {
   7   unsigned ctr;
   8   _Bool waiting;
   9 }
  10
  11 extern __thread rcu_reader;
  12
  13 void rcu_read_lock()
  14 {
  15   struct rcu_reader_data *x = &rcu_reader;
  16   _Bool val = 0;
  17
  18   __atomic_store(&x->waiting, &val, 0);
  19 }