From 8dac28f2e3394934a621fc493a870c46078819ac Mon Sep 17 00:00:00 2001
From: obscuren <geffobscura@gmail.com>
Date: Tue, 19 May 2015 17:52:44 +0200
Subject: [PATCH] core: block cache Has method thread safe

---
 core/block_cache.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/core/block_cache.go b/core/block_cache.go
index eeef5c41d..0c747d37c 100644
--- a/core/block_cache.go
+++ b/core/block_cache.go
@@ -85,6 +85,9 @@ func (bc *BlockCache) Get(hash common.Hash) *types.Block {
 }
 
 func (bc *BlockCache) Has(hash common.Hash) bool {
+	bc.mu.RLock()
+	defer bc.mu.RUnlock()
+
 	_, ok := bc.blocks[hash]
 	return ok
 }