From 0540c164c2fcbefd76036685a978b38ab9f6dc68 Mon Sep 17 00:00:00 2001
From: Alex Beregszaszi <alex@rtfs.hu>
Date: Fri, 20 Jul 2018 11:29:08 +0100
Subject: [PATCH] Check if constantinople hard fork is active in the
 SHL/SHR/SAR implementation

---
 lib/opFns.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/lib/opFns.js b/lib/opFns.js
index 3793070053f..2c73f8c9d29 100644
--- a/lib/opFns.js
+++ b/lib/opFns.js
@@ -158,18 +158,27 @@ module.exports = {
     return new BN(word.shrn((31 - pos.toNumber()) * 8).andln(0xff))
   },
   SHL: function (a, b, runState) {
+    if (!runState._common.gteHardforl('constantinople')) {
+      trap(ERROR.INVALID_OPCODE)
+    }
     if (a.gten(256)) {
       return new BN(0)
     }
     return b.shln(a.toNumber())
   },
   SHR: function (a, b, runState) {
+    if (!runState._common.gteHardforl('constantinople')) {
+      trap(ERROR.INVALID_OPCODE)
+    }
     if (a.gten(256)) {
       return new BN(0)
     }
     return b.shrn(a.toNumber())
   },
   SAR: function (a, b, runState) {
+    if (!runState._common.gteHardforl('constantinople')) {
+      trap(ERROR.INVALID_OPCODE)
+    }
     b = b.fromTwos(256)
     if (a.gten(256)) {
       if (b.ltn(0)) {