From c16c2bf1020b487ed270cf4a4602ee260c4fc14c Mon Sep 17 00:00:00 2001
From: Roman Khimov <roman@nspcc.ru>
Date: Wed, 6 Nov 2019 17:56:06 +0300
Subject: [PATCH] core: store current header reference on clean init

Missing it the following line could fail on subsequent restarts:

        currHeaderHeight, currHeaderHash, err := storage.CurrentHeaderHeight(bc.store)

if the node was stopped before any headers had been received.
---
 pkg/core/blockchain.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkg/core/blockchain.go b/pkg/core/blockchain.go
index ac8ca3365..8f31adfb9 100644
--- a/pkg/core/blockchain.go
+++ b/pkg/core/blockchain.go
@@ -101,6 +101,10 @@ func (bc *Blockchain) init() error {
 			return err
 		}
 		bc.headerList = NewHeaderHashList(genesisBlock.Hash())
+		err = bc.store.Put(storage.SYSCurrentHeader.Bytes(), hashAndIndexToBytes(genesisBlock.Hash(), genesisBlock.Index))
+		if err != nil {
+			return err
+		}
 		return bc.storeBlock(genesisBlock)
 	}
 	if ver != version {