EIP 170 contract code size limit

Jan Xie · Jan Xie · commit 6f55775ef9d3 · 2017-02-11T00:54:36.000+08:00
diff --git a/ethereum/config.py b/ethereum/config.py
@@ -64,6 +64,7 @@
     # Anti-DoS fork
     ANTI_DOS_FORK_BLKNUM = 2463000,
     SPURIOUS_DRAGON_FORK_BLKNUM = 2675000,
+    CONTRACT_CODE_SIZE_LIMIT = 0x6000,
     # Default consensus strategy: ethash, poa, casper, pbft
     CONSENSUS_STRATEGY = 'ethash',
     # Serenity fork
diff --git a/ethereum/processblock.py b/ethereum/processblock.py
@@ -151,7 +151,12 @@ def create_contract(ext, msg):
     if res:
         if not len(dat):
             return 1, gas, msg.to
-        gcost = len(dat) * opcodes.GCONTRACTBYTE
+
+        if ext.post_spurious_dragon_hardfork():
+            gcost = 2**256 - 1 if len(dat) > config.default_config['CONTRACT_CODE_SIZE_LIMIT'] else len(dat) * opcodes.GCONTRACTBYTE
+        else:
+            gcost = len(dat) * opcodes.GCONTRACTBYTE
+
         if gas >= gcost:
             gas -= gcost
         else:
