Track overriding methods when instantiating a template class. Fixes PR5550.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89248 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplateInstantiateDecl.cpp b/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 7e618cd..deb7ff0 100644
--- a/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -869,6 +869,8 @@
       !Method->getFriendObjectKind())
     Owner->addDecl(Method);
 
+  SemaRef.AddOverriddenMethods(Record, Method);
+
   return Method;
 }