From 82e86eba1bb71abc53f8e6c9df54f4f25f9a117a Mon Sep 17 00:00:00 2001
From: Gav Wood <i@gavwood.com>
Date: Tue, 5 May 2015 15:16:12 +0200
Subject: [PATCH] Compile fix.

---
 libethereum/BlockChain.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/libethereum/BlockChain.h b/libethereum/BlockChain.h
index f69f67a5d..12e1fc785 100644
--- a/libethereum/BlockChain.h
+++ b/libethereum/BlockChain.h
@@ -42,10 +42,13 @@
 #include "BlockQueue.h"
 namespace ldb = leveldb;
 
-template <> struct std::hash<std::pair<dev::h256, unsigned>>
+namespace std
 {
-	size_t operator()(const pair<dev::h256, unsigned> &x ) const { return std::hash<dev::h256>()(x.first) ^ std::hash<unsigned>()(x.second); }
+template <> struct hash<pair<dev::h256, unsigned>>
+{
+	size_t operator()(pair<dev::h256, unsigned> const& _x) const { return hash<dev::h256>()(_x.first) ^ hash<unsigned>()(_x.second); }
 };
+}
 
 namespace dev
 {