Check that the function being overridden is virtual.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71802 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplateInstantiateDecl.cpp b/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 19aaafb..02df593 100644
--- a/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -546,8 +546,8 @@
                                                   CXXMethodDecl *Tmpl) {
   CXXRecordDecl *Record = cast<CXXRecordDecl>(Owner);
   New->setAccess(Tmpl->getAccess());
-  if (Tmpl->isVirtual()) {
-    New->setVirtual();
+  if (Tmpl->isVirtualAsWritten()) {
+    New->setVirtualAsWritten(true);
     Record->setAggregate(false);
     Record->setPOD(false);
     Record->setPolymorphic(true);