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/* { dg-do link } */
/* { dg-options "-std=c++0x" } */
/* { dg-final { simulate-thread } } */
using namespace std;
#include <atomic>
#include <limits.h>
#include <stdio.h>
#include "simulate-thread.h"
atomic_int atomi;
/* Non-atomic. Use a type wide enough to possibly coerce GCC into
moving things around. */
long double j;
/* Test that an atomic store synchronizes with an atomic load.
In this case, test that the store to <j> happens-before the atomic
store to <atomi>. Make sure the compiler does not reorder the
stores. */
__attribute__((noinline))
void simulate_thread_main()
{
j = 13.0;
atomi.store(1);
}
int main ()
{
simulate_thread_main();
simulate_thread_done();
return 0;
}
void simulate_thread_other_threads()
{
}
/* Verify that side-effects before an atomic store are correctly
synchronized with the an atomic load to the same location. */
int simulate_thread_step_verify()
{
if (atomi.load() == 1 && j != 13.0)
{
printf ("FAIL: invalid synchronization for atomic load/store.\n");
return 1;
}
return 0;
}
int simulate_thread_final_verify()
{
return simulate_thread_step_verify();
}
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