vm > spuriousDragon: added allowed Code size check to EVM message exe…

…cution
ethereumjs · Jun 25, 2020 · 7ccb6c3 · 7ccb6c3
1 parent 7af8dd1
commit 7ccb6c3
Showing 1 changed file with 11 additions and 2 deletions.
diff --git a/packages/vm/lib/evm/evm.ts b/packages/vm/lib/evm/evm.ts
@@ -255,10 +255,19 @@ export default class EVM {
       totalGas = totalGas.add(returnFee)
     }
 
-    // if not enough gas
+    // Check for SpuriousDragon EIP-170 code size limit
+    const codeSizeLimit = 24576 // 0x600
+    let allowedCodeSize = true
+    if (
+      this._vm._common.gteHardfork('spuriousDragon') &&
+      result.returnValue.length > codeSizeLimit
+    ) {
+      allowedCodeSize = false
+    }
+    // If enough gas and allowed code size
     if (
       totalGas.lte(message.gasLimit) &&
-      (this._vm.allowUnlimitedContractSize || result.returnValue.length <= 24576)
+      (this._vm.allowUnlimitedContractSize || allowedCodeSize)
     ) {
       result.gasUsed = totalGas
     } else {