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Fixed Deflationary/Rebasing Token bug in token pool

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This commit is contained in:
Thrilok Kumar 2020-10-07 20:52:22 +05:30
parent 4bff80010d
commit 6bbe1f80c8
1 changed files with 6 additions and 2 deletions
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8
contracts/pools/erc20.sol
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@ -121,13 +121,17 @@ contract PoolToken is ReentrancyGuard, ERC20Pausable, DSMath {
*/ */
function deposit(uint tknAmt) external payable nonReentrant whenNotPaused returns (uint mintAmt) { function deposit(uint tknAmt) external payable nonReentrant whenNotPaused returns (uint mintAmt) {
require(msg.value == 0, "non-eth-pool"); require(msg.value == 0, "non-eth-pool");
require(tknAmt != 0, "tknAmt-is-zero");
uint _tokenBal = wdiv(totalSupply(), exchangeRate); uint _tokenBal = wdiv(totalSupply(), exchangeRate);
uint _newTknBal = add(_tokenBal, tknAmt); uint _newTknBal = add(_tokenBal, tknAmt);
require(_newTknBal < registry.poolCap(address(this)), "pool-cap-reached"); require(_newTknBal < registry.poolCap(address(this)), "pool-cap-reached");
uint initalBal = baseToken.balanceOf(address(this));
baseToken.safeTransferFrom(msg.sender, address(this), tknAmt); baseToken.safeTransferFrom(msg.sender, address(this), tknAmt);
mintAmt = wmul(tknAmt, exchangeRate); uint finalBal = baseToken.balanceOf(address(this));
uint _tknAmt = sub(finalBal, initalBal);
mintAmt = wmul(_tknAmt, exchangeRate);
_mint(msg.sender, mintAmt); _mint(msg.sender, mintAmt);
emit LogDeposit(msg.sender, tknAmt, mintAmt); emit LogDeposit(msg.sender, _tknAmt, mintAmt);
} }
/** /**