1 files changed, 35 insertions, 0 deletions
diff --git a/gcc/testsuite/objc.dg/sync-2.m b/gcc/testsuite/objc.dg/sync-2.m
new file mode 100644
index 000000000..c2143a4e9
--- /dev/null
+++ b/gcc/testsuite/objc.dg/sync-2.m
@@ -0,0 +1,35 @@
+/* Make sure that @synchronized parses and a very basic test runs.  */
+/* { dg-options "-fobjc-exceptions -fgnu-runtime" } */
+
+#include "../objc-obj-c++-shared/Object1.h"
+
+int main (void)
+{
+  Object *a = [Object new];
+  Object *b = [Object new];
+  Object *c = [Object new];
+
+  /* This single-threaded test just checks that @synchronized() uses a
+     recursive mutex, and that the runtime at least doesn't crash
+     immediately upon finding it.
+  */
+  @synchronized (a)
+    {
+      @synchronized (a)
+	{
+	  @synchronized (b)
+	    {
+	      @synchronized (b)
+		{
+		  @synchronized (c)
+		    {
+		      @synchronized (c)
+			{
+			  return 0;
+			}
+		    }
+		}
+	    }
+	}
+    }
+}