objc-arc: 'Class' property is implicitly __unsafe_unretained.

// rdar://10239594

llvm-svn: 141915

2 files changed, 16 insertions, 1 deletions

diff --git a/clang/lib/Sema/SemaObjCProperty.cpp b/clang/lib/Sema/SemaObjCProperty.cpp
index 33069928f24..751f553945c 100644
--- a/clang/lib/Sema/SemaObjCProperty.cpp
+++ b/clang/lib/Sema/SemaObjCProperty.cpp
@@ -39,7 +39,7 @@ static Qualifiers::ObjCLifetime getImpliedARCOwnership(
   if (attrs & (ObjCPropertyDecl::OBJC_PR_retain |
                ObjCPropertyDecl::OBJC_PR_strong |
                ObjCPropertyDecl::OBJC_PR_copy)) {
-    return Qualifiers::OCL_Strong;
+    return type->getObjCARCImplicitLifetime();
   } else if (attrs & ObjCPropertyDecl::OBJC_PR_weak) {
     return Qualifiers::OCL_Weak;
   } else if (attrs & ObjCPropertyDecl::OBJC_PR_unsafe_unretained) {
diff --git a/clang/test/SemaObjC/arc-property-lifetime.m b/clang/test/SemaObjC/arc-property-lifetime.m
index cbed455ddc8..9cc3ada15fa 100644
--- a/clang/test/SemaObjC/arc-property-lifetime.m
+++ b/clang/test/SemaObjC/arc-property-lifetime.m
@@ -110,3 +110,18 @@
 @synthesize isAutosaving = _isAutosaving;
 @end
 
+// rdar://10239594
+// Test for 'Class' properties being unretained.
+@interface MyClass {
+@private
+    Class _controllerClass;
+    id _controllerId;
+}
+@property (copy) Class controllerClass;
+@property (copy) id controllerId;
+@end
+
+@implementation MyClass
+@synthesize controllerClass = _controllerClass;
+@synthesize controllerId = _controllerId;
+@end