1 files changed, 45 insertions, 0 deletions
diff --git a/clang/test/CodeGenObjC/objc-container-subscripting.m b/clang/test/CodeGenObjC/objc-container-subscripting.m
new file mode 100644
index 0000000..fd8f8ef
--- /dev/null
+++ b/clang/test/CodeGenObjC/objc-container-subscripting.m
@@ -0,0 +1,45 @@
+// RUN: %clang_cc1 -emit-llvm -triple x86_64-apple-darwin %s -o /dev/null
+
+typedef unsigned int size_t;
+@protocol P @end
+
+@interface NSMutableArray
+#if __has_feature(objc_subscripting)
+- (id)objectAtIndexedSubscript:(size_t)index;
+- (void)setObject:(id)object atIndexedSubscript:(size_t)index;
+#endif
+@end
+
+#if __has_feature(objc_subscripting)
+@interface XNSMutableArray
+- (id)objectAtIndexedSubscript:(size_t)index;
+- (void)setObject:(id)object atIndexedSubscript:(size_t)index;
+#endif
+@end
+
+@interface NSMutableDictionary
+- (id)objectForKeyedSubscript:(id)key;
+- (void)setObject:(id)object forKeyedSubscript:(id)key;
+@end
+
+@class NSString;
+
+int main() {
+  NSMutableArray<P> * array;
+  id oldObject = array[10];
+ 
+  array[10] = oldObject;
+
+  id unknown_array;
+  oldObject = unknown_array[1];
+
+  unknown_array[1] = oldObject;
+
+  NSMutableDictionary *dictionary;
+  NSString *key;
+  id newObject;
+  oldObject = dictionary[key];
+  dictionary[key] = newObject;	// replace oldObject with newObject
+
+}
+