+/* Trivial test of critical sections. */
+
+/* { dg-require-effective-target sync_int_long } */
+
+#include <omp.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <assert.h>
+#include "libgomp_g.h"
+
+
+static volatile int test = -1;
+
+static void function(void *dummy)
+{
+ int iam = omp_get_thread_num ();
+ int old;
+
+ GOMP_critical_start ();
+
+ old = __sync_lock_test_and_set (&test, iam);
+ assert (old == -1);
+
+ usleep (10);
+ test = -1;
+
+ GOMP_critical_end ();
+}
+
+int main()
+{
+ omp_set_dynamic (0);
+
+ GOMP_parallel_start (function, NULL, 3);
+ function (NULL);
+ GOMP_parallel_end ();
+
+ return 0;
+}