From 3f17b47c7e6cfc550cfe02da068ce417e8046ca3 Mon Sep 17 00:00:00 2001
From: Douglas Gregor <dgregor@apple.com>
Date: Fri, 15 May 2009 20:47:12 +0000
Subject: Allow instantiation of NULL expressions and statements

llvm-svn: 71889
---
 clang/lib/Sema/SemaTemplateInstantiateExpr.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'clang/lib/Sema/SemaTemplateInstantiateExpr.cpp')

diff --git a/clang/lib/Sema/SemaTemplateInstantiateExpr.cpp b/clang/lib/Sema/SemaTemplateInstantiateExpr.cpp
index c2007c6e3b3..08c388efea1 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateExpr.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateExpr.cpp
@@ -432,6 +432,9 @@ TemplateExprInstantiator::VisitCXXThisExpr(CXXThisExpr *E) {
 
 Sema::OwningExprResult 
 Sema::InstantiateExpr(Expr *E, const TemplateArgumentList &TemplateArgs) {
+  if (!E)
+    return Owned((Expr *)0);
+
   TemplateExprInstantiator Instantiator(*this, TemplateArgs);
   return Instantiator.Visit(E);
 }
-- 
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