From 8a457ef54081fdb9504d5f8626f59203db0ac31c Mon Sep 17 00:00:00 2001
From: Roman Khimov <roman@nspcc.ru>
Date: Mon, 23 Sep 2019 20:26:53 +0300
Subject: [PATCH] transaction: add a check for createHash() invocation

It should work in general.
---
 pkg/core/transaction/transaction.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pkg/core/transaction/transaction.go b/pkg/core/transaction/transaction.go
index 12e90e7dd..1d9db3349 100644
--- a/pkg/core/transaction/transaction.go
+++ b/pkg/core/transaction/transaction.go
@@ -62,7 +62,9 @@ func NewTrimmedTX(hash util.Uint256) *Transaction {
 // Hash return the hash of the transaction.
 func (t *Transaction) Hash() util.Uint256 {
 	if t.hash.Equals(util.Uint256{}) {
-		t.createHash()
+		if t.createHash() != nil {
+			panic("failed to compute hash!")
+		}
 	}
 	return t.hash
 }
@@ -70,7 +72,9 @@ func (t *Transaction) Hash() util.Uint256 {
 // VerificationHash returns the hash of the transaction used to verify it.
 func (t *Transaction) VerificationHash() util.Uint256 {
 	if t.verificationHash.Equals(util.Uint256{}) {
-		t.createHash()
+		if t.createHash() != nil {
+			panic("failed to compute hash!")
+		}
 	}
 	return t.verificationHash
 }