From 4d37b89479662df339794a50837021855ee08fe9 Mon Sep 17 00:00:00 2001
From: Michael de Hoog <michael.dehoog@coinbase.com>
Date: Tue, 7 Jan 2025 10:39:24 -1000
Subject: [PATCH] Add zero address checks to DeployChain constructor (#43)

---
 contracts/src/DeployChain.sol | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/contracts/src/DeployChain.sol b/contracts/src/DeployChain.sol
index f3a48a1..f71b8e4 100644
--- a/contracts/src/DeployChain.sol
+++ b/contracts/src/DeployChain.sol
@@ -88,6 +88,16 @@ contract DeployChain is Ownable {
         address _superchainConfig,
         address _protocolVersions
     ) {
+        require(_proxyAdmin != address(0));
+        require(_optimismPortal != address(0));
+        require(_systemConfig != address(0));
+        require(_l1StandardBridge != address(0));
+        require(_l1ERC721Bridge != address(0));
+        require(_optimismMintableERC20Factory != address(0));
+        require(_l1CrossDomainMessenger != address(0));
+        require(_l2OutputOracle != address(0));
+        require(_superchainConfig != address(0));
+        require(_protocolVersions != address(0));
         proxyAdmin = _proxyAdmin;
         optimismPortal = _optimismPortal;
         systemConfig = _systemConfig;