// S : tags   error min c  $TAGS
// S : expect --result error --location-comment ERROR
// S : cc     -o test.bc  $CC_OPT $file
// S : verify  $V_OPT test.bc

int main() {
    int val = 0;
    int old;
    int new = 1;
    __sync_bool_compare_and_swap( &val, old, new ); /* ERROR */
}