Shave off an SLOAD op in ReentrancyGuard.

2019-03-14 15:48:38 -04:00
parent e6971c45c8
commit 620eb2a3be
1 changed files with 2 additions and 4 deletions
--- a/contracts/utils/contracts/src/ReentrancyGuard.sol
+++ b/contracts/utils/contracts/src/ReentrancyGuard.sol
@@ -27,10 +27,8 @@ contract ReentrancyGuard {

    /// @dev Functions with this modifer cannot be reentered.
    modifier nonReentrant() {
-        // Increment the counter.
-        reentrancyGuardCounter += 1;
-        // Remember the current counter value.
-        uint256 localCounter = reentrancyGuardCounter;
+        // Increment and remember the current counter value.
+        uint256 localCounter = ++reentrancyGuardCounter;
        // Call the function.
        _;
        // If the counter value is different from what we remember,