From 8a29bc047a374df2464869b55581c24def68c2ec Mon Sep 17 00:00:00 2001
From: Nick Lewycky <nicholas@mxc.ca>
Date: Thu, 12 May 2011 03:51:24 +0000
Subject: [PATCH] Fix crasher spotted in IWYU.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131222 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Sema/SemaTemplateInstantiateDecl.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/Sema/SemaTemplateInstantiateDecl.cpp b/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 1f0bd4cac2..f6cce0bbf9 100644
--- a/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -2314,7 +2314,8 @@ void Sema::InstantiateFunctionDefinition(SourceLocation PointOfInstantiation,
     Pattern = PatternDecl->getBody(PatternDecl);
 
   // Postpone late parsed template instantiations.
-  if (PatternDecl->isLateTemplateParsed() && !LateTemplateParser) {
+  if (PatternDecl && PatternDecl->isLateTemplateParsed() &&
+      !LateTemplateParser) {
     PendingInstantiations.push_back(
       std::make_pair(Function, PointOfInstantiation));
     return;
-- 
2.40.0