1 files changed, 20 insertions, 0 deletions
diff --git a/test/SemaObjCXX/synchronized.mm b/test/SemaObjCXX/synchronized.mm
new file mode 100644
index 000000000000..37305c5cca8c
--- /dev/null
+++ b/test/SemaObjCXX/synchronized.mm
@@ -0,0 +1,20 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -Wno-objc-root-class %s
+
+@interface PBXTrackableTaskManager @end
+@implementation PBXTrackableTaskManager @end
+
+struct x {
+  operator PBXTrackableTaskManager *() const { return 0; }
+} a;
+
+struct y {
+  operator int *() const { return 0; }
+} b;
+
+void test1() {
+  @synchronized (a) {
+  }
+
+  @synchronized (b) {  // expected-error {{@synchronized requires an Objective-C object type ('struct y' invalid)}}
+  }
+}