ERC20: optimized gas costs in `_spendAllowance` (#5271)

4 months ago · a4dc928a93
parent 5bb3f3e788
commit a4dc928a93
1 changed files with 1 additions and 1 deletions
--- a/contracts/token/ERC20/ERC20.sol
+++ b/contracts/token/ERC20/ERC20.sol
@ -300,7 +300,7 @@ abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
     */
    function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
-        if (currentAllowance != type(uint256).max) {
+        if (currentAllowance < type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(spender, currentAllowance, value);
            }