From c99b736ec0bcdc7d26ae53ae2f3ed2d8896ad06a Mon Sep 17 00:00:00 2001
From: jason <jason@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu, 21 Mar 2013 03:25:23 +0000
Subject: [PATCH] 	* pt.c (retrieve_specialization): Handle null tmpl
 argument.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@196850 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/cp/ChangeLog | 2 ++
 gcc/cp/pt.c      | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 4191c860786..bef6faeb654 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,5 +1,7 @@
 2013-03-20  Jason Merrill  <jason@redhat.com>
 
+	* pt.c (retrieve_specialization): Handle null tmpl argument.
+
 	PR c++/17232
 	PR c++/56642
 	* pt.c (tsubst_decl): Check return value of register_specialization.
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index 531d8607aff..d56ffede6b6 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -1009,6 +1009,9 @@ optimize_specialization_lookup_p (tree tmpl)
 static tree
 retrieve_specialization (tree tmpl, tree args, hashval_t hash)
 {
+  if (tmpl == NULL_TREE)
+    return NULL_TREE;
+
   if (args == error_mark_node)
     return NULL_TREE;
 
-- 
2.11.4.GIT