zesl
May 31, 2022, 1:58am
1
pragma solidity ^0.5.16;
import "openzeppelin-solidity-2.3.0/contracts/math/SafeMath.sol";
import "openzeppelin-solidity-2.3.0/contracts/token/ERC20/ERC20Detailed.sol";
import "openzeppelin-solidity-2.3.0/contracts/token/ERC20/SafeERC20.sol";
import "openzeppelin-solidity-2.3.0/contracts/utils/ReentrancyGuard.sol";
// Inheritance
import "./interfaces/IStakingRewards.sol";
import "./RewardsDistributionRecipient.sol";
import "./Pausable.sol";
// https://docs.synthetix.io/contracts/source/contracts/stakingrewards
contract StakingRewards is IStakingRewards, RewardsDistributionRecipient, ReentrancyGuard, Pausable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
/* ========== STATE VARIABLES ========== */
IERC20 public rewardsToken;
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This is their staking contract, for example, stake() doesn't seem to need reentrancy guard? There's no ETH transaction involved in there. What kind of function could trigger it twice without the reentrancy guard?
I guess it's just a extra layer of "security" but probably just a waste of extra gas
