Objective-C ARC++: Prefer references to __strong/__weak over __unsafe_unretained.

Fixes <rdar://problem/15713945>.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@198343 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 0 deletions

diff --git a/test/SemaObjCXX/arc-templates.mm b/test/SemaObjCXX/arc-templates.mm
index b3519b9573..ebede6404f 100644
--- a/test/SemaObjCXX/arc-templates.mm
+++ b/test/SemaObjCXX/arc-templates.mm
@@ -302,3 +302,19 @@ namespace rdar14467941 {
     float &fr2 = takePtr<A>(a);
   }
 }
+
+namespace rdar15713945 {
+  template <class T> int &f(__strong T &);
+  template <class T> float &f(__weak T &);
+  template <class T> double &f(__unsafe_unretained T &);
+  template <class T> char &f(T &);
+
+  void foo() {
+    __strong NSString * const strong = 0;
+    int &ir = (f)(strong);
+    __weak NSString * const weak = 0;
+    float &fr = (f)(weak);
+    __unsafe_unretained NSString * const unsafe = 0;
+    double &dr = (f)(unsafe);
+  }
+}