1 files changed, 53 insertions, 0 deletions
diff --git a/libgomp/testsuite/libgomp.c/single-1.c b/libgomp/testsuite/libgomp.c/single-1.c
new file mode 100644
index 000000000..1ce89118d
--- /dev/null
+++ b/libgomp/testsuite/libgomp.c/single-1.c
@@ -0,0 +1,53 @@
+/* Trivial test of single.  */
+
+/* { 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 int test;
+
+static void f_nocopy (void *dummy)
+{
+  if (GOMP_single_start ())
+    {
+      int iam = omp_get_thread_num ();
+      int old = __sync_lock_test_and_set (&test, iam);
+      assert (old == -1);
+    }
+}
+
+static void f_copy (void *dummy)
+{
+  int *x = GOMP_single_copy_start ();
+  if (x == NULL)
+    {
+      int iam = omp_get_thread_num ();
+      int old = __sync_lock_test_and_set (&test, iam);
+      assert (old == -1);
+      GOMP_single_copy_end (&test);
+    }
+  else
+    assert (x == &test);
+}
+
+int main()
+{
+  omp_set_dynamic (0);
+
+  test = -1;
+  GOMP_parallel_start (f_nocopy, NULL, 3);
+  f_nocopy (NULL);
+  GOMP_parallel_end ();
+
+  test = -1;
+  GOMP_parallel_start (f_copy, NULL, 3);
+  f_copy (NULL);
+  GOMP_parallel_end ();
+
+  return 0;
+}