outside a method, 'super' should resolve in a normal name look up

to mimic gcc's behavior. Fixes radar 7400691.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94246 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Sema/SemaExprObjC.cpp

@@ -398,7 +398,17 @@ Sema::ExprResult Sema::ActOnClassMessage(
         return ActOnInstanceMessage(ReceiverExpr.get(), Sel, lbrac,
                                     selectorLoc, rbrac, Args, NumArgs);
       }
-      return Diag(receiverLoc, diag::err_undeclared_var_use) << receiverName;
+      else if (TypedefDecl *OCTD = dyn_cast_or_null<TypedefDecl>(SuperDecl)) {
+        const ObjCInterfaceType *OCIT;
+        OCIT = OCTD->getUnderlyingType()->getAs<ObjCInterfaceType>();
+        if (!OCIT) {
+          Diag(receiverLoc, diag::err_invalid_receiver_to_message);
+          return true;
+        }
+        ClassDecl = OCIT->getDecl();
+      }
+      else      
+        return Diag(receiverLoc, diag::err_undeclared_var_use) << receiverName;
     }
   } else
     ClassDecl = getObjCInterfaceDecl(receiverName, receiverLoc);

test/SemaObjC/super.m

@@ -39,3 +39,10 @@ void f0(int super) {
 void f1(int puper) {
   [super m]; // expected-error{{use of undeclared identifier 'super'}}
 }
+
+// radar 7400691
+typedef Foo super;
+
+void test() {
+  [super cMethod];
+}