Add some more tests for reference binding of Objective-C objects

llvm-svn: 110514

clang/test/SemaObjCXX/references.mm

@@ -39,6 +39,11 @@ void f4(NSString &tmpstr) {
 @interface foo<P1> {} @end
 @interface bar : foo <P1, P2> {} @end
 typedef bar baz;
+
+struct ToBar {
+  operator bar&() const;
+};
+
 void f5(foo&);
 void f5b(foo<P1>&);
 void f5c(foo<P2>&);
@@ -48,5 +53,10 @@ void f6(baz* x) {
   f5b(*x); 
   f5c(*x); 
   f5d(*x);
-  (void)((foo&)*x);  
+  (void)((foo&)*x);
+  f5(ToBar());
+  f5b(ToBar());
+  f5c(ToBar());
+  f5d(ToBar());
+  (void)((foo&)ToBar());
 }