From e4dba36892477f3ef614dd4e4f1234ae4a4e26d0 Mon Sep 17 00:00:00 2001
From: obscuren <geffobscura@gmail.com>
Date: Thu, 30 Apr 2015 14:55:21 +0200
Subject: [PATCH] core: check for parent in calc TD. TD = (N != 0 == parent.TD)
|| (== D)
---
core/chain_manager.go | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/core/chain_manager.go b/core/chain_manager.go
index e97ed307c..9f62d3b47 100644
--- a/core/chain_manager.go
+++ b/core/chain_manager.go
@@ -49,6 +49,10 @@ func CalcDifficulty(block, parent *types.Header) *big.Int {
}
func CalculateTD(block, parent *types.Block) *big.Int {
+ if parent == nil {
+ return block.Difficulty()
+ }
+
td := new(big.Int).Add(parent.Td, block.Header().Difficulty)
return td
--
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