1 files changed, 47 insertions, 0 deletions
diff --git a/test/SemaObjC/tentative-property-decl.m b/test/SemaObjC/tentative-property-decl.m
new file mode 100644
index 0000000000000..f69ac6dace431
--- /dev/null
+++ b/test/SemaObjC/tentative-property-decl.m
@@ -0,0 +1,47 @@
+// RUN: %clang_cc1 -fsyntax-only -Weverything -verify %s
+// rdar://11656982
+/** Normally, a property cannot be both 'readonly' and having a "write" attribute
+    (copy/retain/etc.). But, property declaration in primary class and protcols
+    are tentative as they may be overridden into a 'readwrite' property in class 
+    extensions. Postpone diagnosing such warnings until the class implementation 
+    is seen.
+*/
+
+@interface Super {
+}
+@end
+
+@class NSString;
+
+@interface MyClass : Super
+@property(nonatomic, copy, readonly) NSString *prop;
+@property(nonatomic, copy, readonly) id warnProp; // expected-warning {{property attributes 'readonly' and 'copy' are mutually exclusive}}
+@end
+
+@interface MyClass ()
+@property(nonatomic, copy, readwrite) NSString *prop;
+@end
+
+@implementation MyClass
+@synthesize prop;
+@synthesize warnProp;
+@end
+
+
+@protocol P
+@property(nonatomic, copy, readonly) NSString *prop;
+@property(nonatomic, copy, readonly) id warnProp; // expected-warning {{property attributes 'readonly' and 'copy' are mutually exclusive}}
+@end
+
+@interface YourClass : Super <P>
+@end
+
+@interface YourClass ()
+@property(nonatomic, copy, readwrite) NSString *prop;
+@end
+
+@implementation YourClass 
+@synthesize prop;
+@synthesize warnProp;
+@end
+