From da7d57e07c04dcbb7cc20b35f6606ef3f4c400e3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= <peterke@gmail.com>
Date: Mon, 4 Sep 2017 22:35:00 +0300
Subject: core: make txpool operate on immutable state

---
 core/state_transition.go | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'core/state_transition.go')

diff --git a/core/state_transition.go b/core/state_transition.go
index bab4540be..e7a068589 100644
--- a/core/state_transition.go
+++ b/core/state_transition.go
@@ -18,7 +18,6 @@ package core
 
 import (
 	"errors"
-	"fmt"
 	"math/big"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -197,8 +196,11 @@ func (st *StateTransition) preCheck() error {
 
 	// Make sure this transaction's nonce is correct
 	if msg.CheckNonce() {
-		if n := st.state.GetNonce(sender.Address()); n != msg.Nonce() {
-			return fmt.Errorf("invalid nonce: have %d, expected %d", msg.Nonce(), n)
+		nonce := st.state.GetNonce(sender.Address())
+		if nonce < msg.Nonce() {
+			return ErrNonceTooHigh
+		} else if nonce > msg.Nonce() {
+			return ErrNonceTooLow
 		}
 	}
 	return st.buyGas()
-- 
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