Check if constantinople hard fork is active in the SHL/SHR/SAR implem…

…entation
ethereumjs · Jul 23, 2018 · 0540c16 · 0540c16
1 parent e9c8512
commit 0540c16
Showing 1 changed file with 9 additions and 0 deletions.
diff --git 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)) {