From 25ed5feddadea8201974bfacb2a57d060b697acb Mon Sep 17 00:00:00 2001
From: Gustav Simonsson <gustav.simonsson@gmail.com>
Date: Mon, 26 Sep 2016 01:25:50 -0400
Subject: core/state: short-circuit balance change if zero value

---
 core/state/state_object.go | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'core/state')

diff --git a/core/state/state_object.go b/core/state/state_object.go
index c5462316d..9f0ce5b4b 100644
--- a/core/state/state_object.go
+++ b/core/state/state_object.go
@@ -152,6 +152,9 @@ func (self *StateObject) Update() {
 }
 
 func (c *StateObject) AddBalance(amount *big.Int) {
+	if amount.Cmp(common.Big0) == 0 {
+		return
+	}
 	c.SetBalance(new(big.Int).Add(c.balance, amount))
 
 	if glog.V(logger.Core) {
@@ -160,6 +163,9 @@ func (c *StateObject) AddBalance(amount *big.Int) {
 }
 
 func (c *StateObject) SubBalance(amount *big.Int) {
+	if amount.Cmp(common.Big0) == 0 {
+		return
+	}
 	c.SetBalance(new(big.Int).Sub(c.balance, amount))
 
 	if glog.V(logger.Core) {
-- 
cgit v1.2.3