feat(protocol): allow local.params.parentMetaHash to remain as 0 (#…

…18451)
taikoxyz · Nov 6, 2024 · 94185fe · 94185fe
1 parent bfb0386
commit 94185fe
Showing 1 changed file with 4 additions and 5 deletions.
diff --git a/packages/protocol/contracts/layer1/based/LibProposing.sol b/packages/protocol/contracts/layer1/based/LibProposing.sol
@@ -202,11 +202,10 @@ library LibProposing {
 
         // Check if parent block has the right meta hash. This is to allow the proposer to make sure
         // the block builds on the expected latest chain state.
-        if (local.params.parentMetaHash == 0) {
-            local.params.parentMetaHash = parentBlk.metaHash;
-        } else {
-            require(local.params.parentMetaHash == parentBlk.metaHash, L1_UNEXPECTED_PARENT());
-        }
+        require(
+            local.params.parentMetaHash == 0 || local.params.parentMetaHash == parentBlk.metaHash,
+            L1_UNEXPECTED_PARENT()
+        );
 
         // Initialize metadata to compute a metaHash, which forms a part of the block data to be
         // stored on-chain for future integrity checks. If we choose to persist all data fields in