From 990ef5525c48a29d1147ccf55505c9a0178ab156 Mon Sep 17 00:00:00 2001
From: Anna Shaleva <shaleva.ann@nspcc.ru>
Date: Tue, 21 Jul 2020 14:23:52 +0300
Subject: [PATCH] core: adjust System.Runtime.GasLeft interop

Part of #1055.

In test mode it should return -1.
---
 pkg/core/interop/runtime/util.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pkg/core/interop/runtime/util.go b/pkg/core/interop/runtime/util.go
index e1200055c..522940381 100644
--- a/pkg/core/interop/runtime/util.go
+++ b/pkg/core/interop/runtime/util.go
@@ -11,7 +11,11 @@ import (
 
 // GasLeft returns remaining amount of GAS.
 func GasLeft(_ *interop.Context, v *vm.VM) error {
-	v.Estack().PushVal(v.GasLimit - v.GasConsumed())
+	if v.GasLimit == -1 {
+		v.Estack().PushVal(v.GasLimit)
+	} else {
+		v.Estack().PushVal(v.GasLimit - v.GasConsumed())
+	}
 	return nil
 }