commit 82a9072ecc7393b141b6923abe22820c7d813498
Author: Jason Merrill <jason@redhat.com>
Date:   Fri Oct 30 14:55:57 2015 -0400

    	* pt.c (hash_tmpl_and_args): Use iterative_hash_object on template
    	uid.

diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index 438ec2d..243464d 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -1682,7 +1682,7 @@ spec_hasher::equal (spec_entry *e1, spec_entry *e2)
 static hashval_t
 hash_tmpl_and_args (tree tmpl, tree args)
 {
-  hashval_t val = DECL_UID (tmpl);
+  hashval_t val = iterative_hash_object (DECL_UID (tmpl), 0);
   return iterative_hash_template_arg (args, val);
 }