Diagnose virtual member functions marked override but not overriding any virtual member functions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123888 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index d28548d..2905076 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -3388,7 +3388,8 @@
   ///   If a virtual member function f is marked override and does not override
   ///   a member function of a base class the program is ill-formed.
   if (HasOverrideAttr && !HasOverriddenMethods) {
-    SemaRef.Diag(MD->getLocation(), diag::err_override_function_not_overriding)
+    SemaRef.Diag(MD->getLocation(), 
+                 diag::err_function_marked_override_not_overriding)
       << MD->getDeclName();
     return;
   }