From db01c294fbb586e39ef26cd07df8bceb8a0d207e Mon Sep 17 00:00:00 2001
From: HAOYUatHZ <37070449+HAOYUatHZ@users.noreply.github.com>
Date: Wed, 12 Jun 2019 16:12:21 +0800
Subject: [PATCH] fix: waive charging storage gas for cross-chain (#162)

* fix: do not charge storage gas for cross-chain

* fix: fix skip-storage-gas attack
---
 protocol/validation/tx.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/protocol/validation/tx.go b/protocol/validation/tx.go
index d7cc42b5..68bac2ea 100644
--- a/protocol/validation/tx.go
+++ b/protocol/validation/tx.go
@@ -255,6 +255,7 @@ func checkValid(vs *validationState, e bc.Entry) (err error) {
 		if err = checkValidDest(&vs2, e.WitnessDestination); err != nil {
 			return errors.Wrap(err, "checking cross-chain input destination")
 		}
+		vs.gasStatus.StorageGas = 0
 
 	case *bc.Spend:
 		if e.SpentOutputId == nil {
-- 
2.11.0