Use hex values

chiru-labs · Jun 13, 2022 · 1821eeb · 1821eeb
1 parent d5308ee
commit 1821eeb
Showing 1 changed file with 5 additions and 5 deletions.
diff --git a/contracts/ERC721A.sol b/contracts/ERC721A.sol
@@ -507,11 +507,11 @@ contract ERC721A is IERC721A {
     /**
      * @dev Zeroes out _tokenApprovals[tokenId]
      */
-    function deleteTokenApproval(uint256 tokenId) private {
+    function _deleteTokenApproval(uint256 tokenId) private {
         mapping(uint256 => address) storage tokenApprovalPtr = _tokenApprovals;
         assembly {
-            mstore(0, tokenId)
-            mstore(32, tokenApprovalPtr.slot)
+            mstore(0x00, tokenId)
+            mstore(0x20, tokenApprovalPtr.slot)
             let hash := keccak256(0, 64)
             sstore(hash, 0)
         }
@@ -549,7 +549,7 @@ contract ERC721A is IERC721A {
 
         // Clear approvals from the previous owner.
         if (_addressToUint256(approvedAddress) != 0) {
-            deleteTokenApproval(tokenId);
+            _deleteTokenApproval(tokenId);
         }
 
         // Underflow of the sender's balance is impossible because we check for
@@ -623,7 +623,7 @@ contract ERC721A is IERC721A {
 
         // Clear approvals from the previous owner.
         if (_addressToUint256(approvedAddress) != 0) {
-            deleteTokenApproval(tokenId);
+            _deleteTokenApproval(tokenId);
         }
 
         // Underflow of the sender's balance is impossible because we check for