core: check genesis block before writeout

2015-07-25 16:53:35 +02:00 · 2015-07-25 16:53:35 +02:00 · eaed7584f1
parent 0262ba58cb
commit eaed7584f1
1 changed files with 4 additions and 0 deletions
--- 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)