From 1fcb9641fd21e8b01c8c0bf68debb50093af2fda Mon Sep 17 00:00:00 2001
From: Richard Sandiford <richard.sandiford@arm.com>
Date: Wed, 18 Nov 2015 14:31:10 +0000
Subject: [PATCH] PR 68406: Avoid problem with older host compilers

Older compilers require the Key typedef to be expanded for the traversal
function templates.  This patch uses the same approach as we did for
hash_map.

Tested on x86_64-linux-gnu.

gcc/
	PR bootstrap/68406
	* hash-set.h (hash_set::traverse): Expand Key typedef.

From-SVN: r230549
---
 gcc/ChangeLog  | 5 +++++
 gcc/hash-set.h | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e3c11fe0372..620a3105c1c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2015-11-18  Richard Sandiford  <richard.sandiford@arm.com>
+
+	PR bootstrap/68406
+	* hash-set.h (hash_set::traverse): Expand Key typedef.
+
 2015-11-18  Martin Liska  <mliska@suse.cz>
 
 	* config/arm/arm.c (arm_valid_target_attribute_p): Finalize
diff --git a/gcc/hash-set.h b/gcc/hash-set.h
index 679d2b6df64..8a7c9a00c17 100644
--- a/gcc/hash-set.h
+++ b/gcc/hash-set.h
@@ -68,7 +68,7 @@ public:
   /* Call the call back on each pair of key and value with the passed in
      arg.  */
 
-  template<typename Arg, bool (*f)(const Key &, Arg)>
+  template<typename Arg, bool (*f)(const typename Traits::value_type &, Arg)>
   void traverse (Arg a) const
     {
       for (typename hash_table<Traits>::iterator iter = m_table.begin ();
-- 
2.30.2