1 files changed, 30 insertions, 0 deletions
diff --git a/clang/test/SemaObjC/objc-container-subscripting-2.m b/clang/test/SemaObjC/objc-container-subscripting-2.m
new file mode 100644
index 0000000..3c0081b
--- /dev/null
+++ b/clang/test/SemaObjC/objc-container-subscripting-2.m
@@ -0,0 +1,30 @@
+// RUN: %clang_cc1  -fsyntax-only -verify %s
+
+typedef unsigned int size_t;
+@protocol P @end
+
+@interface NSMutableArray
+- (id)objectAtIndexedSubscript:(size_t)index;
+- (void)setObject:(id)object atIndexedSubscript:(size_t)index;
+@end
+
+@interface NSMutableDictionary
+- (id)objectForKeyedSubscript:(id)key;
+- (void)setObject:(id)object forKeyedSubscript:(size_t)key;
+@end
+
+id func() {
+  NSMutableArray *array;
+  float f; 
+  array[f] = array; // expected-error {{indexing expression is invalid because subscript type 'float' is not an integral or objective-C pointer type}}
+  return array[3.14]; // expected-error {{indexing expression is invalid because subscript type 'double' is not an integral or objective-C pointer type}}
+}
+
+void test_unused() {
+  NSMutableArray *array;
+  array[10]; // expected-warning {{container access result unused - container access should not be used for side effects}} 
+
+  NSMutableDictionary *dict;
+  dict[array]; // expected-warning {{container access result unused - container access should not be used for side effects}}
+}
+