When we simply return a retained member expression when instantiating, we must also mark the member decl as referenced.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91887 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/TreeTransform.h b/lib/Sema/TreeTransform.h
index 03169bf..8c84d4a 100644
--- a/lib/Sema/TreeTransform.h
+++ b/lib/Sema/TreeTransform.h
@@ -3688,8 +3688,13 @@
       Base.get() == E->getBase() &&
       Qualifier == E->getQualifier() &&
       Member == E->getMemberDecl() &&
-      !E->hasExplicitTemplateArgumentList())
+      !E->hasExplicitTemplateArgumentList()) {
+    
+    // Mark it referenced in the new context regardless.
+    // FIXME: this is a bit instantiation-specific.
+    SemaRef.MarkDeclarationReferenced(E->getMemberLoc(), Member);
     return SemaRef.Owned(E->Retain());
+  }
 
   TemplateArgumentListInfo TransArgs;
   if (E->hasExplicitTemplateArgumentList()) {