1 files changed, 36 insertions, 0 deletions
diff --git a/test/SemaObjC/objc-independent-class-attribute.m b/test/SemaObjC/objc-independent-class-attribute.m
new file mode 100644
index 000000000000..2fc13f0cf141
--- /dev/null
+++ b/test/SemaObjC/objc-independent-class-attribute.m
@@ -0,0 +1,36 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -Wno-objc-root-class %s
+// rdar://20255473
+
+@interface NSObject @end
+
+typedef NSObject * __attribute__((objc_independent_class))dispatch_queue_t;
+
+typedef struct S {int ii; } * __attribute__((objc_independent_class))dispatch_queue_t_2; // expected-warning {{Objective-C object}}
+
+typedef struct { // expected-warning {{'objc_independent_class' attribute may be put on a typedef only; attribute is ignored}}
+   NSObject *__attribute__((objc_independent_class)) ns; // expected-warning {{'objc_independent_class' attribute may be put on a typedef only; attribute is ignored}}
+} __attribute__((objc_independent_class)) T;
+
+dispatch_queue_t dispatch_queue_create();
+
+@interface DispatchQPointerCastIssue : NSObject {
+  NSObject *__attribute__((objc_independent_class)) Ivar; // expected-warning {{'objc_independent_class' attribute may be put on a typedef only; attribute is ignored}}
+}
+
+@property (copy) NSObject *__attribute__((objc_independent_class)) Prop; // expected-warning {{'objc_independent_class' attribute may be put on a typedef only; attribute is ignored}}
+
+typedef NSObject * __attribute__((objc_independent_class))dispatch_queue_t_1;
+
+@end
+
+@implementation DispatchQPointerCastIssue
++ (dispatch_queue_t) newDispatchQueue {
+    return dispatch_queue_create();
+}
+@end
+
+NSObject *get_nsobject() {
+  typedef NSObject * __attribute__((objc_independent_class))dispatch_queue_t;
+  dispatch_queue_t dt;
+  return dt;
+}