From 0c718afe9014f89c49eb1c762d42735f00b03a33 Mon Sep 17 00:00:00 2001
From: Jeffrey Wilcke <geffobscura@gmail.com>
Date: Sat, 25 Jul 2015 16:53:35 +0200
Subject: core: check genesis block before writeout
---
core/genesis.go | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/core/genesis.go b/core/genesis.go
index 7d3727b82..a88e88ea8 100644
--- a/core/genesis.go
+++ b/core/genesis.go
@@ -82,6 +82,10 @@ func WriteGenesisBlock(stateDb, blockDb common.Database, reader io.Reader) (*typ
}, nil, nil, nil)
block.Td = difficulty
+ if block := GetBlockByHash(blockDb, block.Hash()); block != nil {
+ return nil, fmt.Errorf("Block %x already in database", block.Hash())
+ }
+
statedb.Sync()
err = WriteBlock(blockDb, block)
--
cgit