From 20b27865249861812de4ddd6d112779914a56afe Mon Sep 17 00:00:00 2001
From: Axel Naumann <Axel.Naumann@cern.ch>
Date: Mon, 24 Jan 2011 15:44:00 +0000
Subject: [PATCH] Check whether DependentScopeDeclRefExpr's NestedNameSpecifier
 exists before accessing it, both for consistency (see
 StmtPrinter::VisitDeclRefExpr()) and for other use cases of dependent types.

llvm-svn: 124119
---
 clang/lib/AST/StmtPrinter.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/clang/lib/AST/StmtPrinter.cpp b/clang/lib/AST/StmtPrinter.cpp
index 4c18a526bbf6..cea3173eb68b 100644
--- a/clang/lib/AST/StmtPrinter.cpp
+++ b/clang/lib/AST/StmtPrinter.cpp
@@ -481,7 +481,8 @@ void StmtPrinter::VisitDeclRefExpr(DeclRefExpr *Node) {
 
 void StmtPrinter::VisitDependentScopeDeclRefExpr(
                                            DependentScopeDeclRefExpr *Node) {
-  Node->getQualifier()->print(OS, Policy);
+  if (NestedNameSpecifier *Qualifier = Node->getQualifier())
+    Qualifier->print(OS, Policy);
   OS << Node->getNameInfo();
   if (Node->hasExplicitTemplateArgs())
     OS << TemplateSpecializationType::PrintTemplateArgumentList(