Official Ethereum Studio project repository. And IDE specially tailored to make it as simple as possible to onboard new users into the Ethereum ecosystem
:warning: This is a patch for three issues, including a high severity issue in GovernorVotesQuorumFraction. For more information visit the security advisories (1, 2, 3).
GovernorVotesQuorumFraction: Fixed quorum updates so they do not affect past proposals that failed due to lack of quorum. (#3561)
ERC165Checker: Added protection against large returndata. (#3587)
LibArbitrumL2, CrossChainEnabledArbitrumL2: Fixed detection of cross-chain calls for EOAs. Previously, calls from EOAs would be classified as cross-chain calls. (#3578)
v4.7.1
:warning: This is a patch for a medium severity issue affecting SignatureChecker and a high severity issue affecting ERC165Checker. For more information visit the security advisories (1, 2).
SignatureChecker: Fix an issue that causes isValidSignatureNow to revert when the target contract returns ill-encoded data. (#3552)
ERC165Checker: Fix an issue that causes supportsInterface to revert when the target contract returns ill-encoded data. (#3552)
v4.7.0
TimelockController: Migrate _call to _execute and allow inheritance and overriding similar to Governor. (#3317)
CrossChainEnabledPolygonChild: replace the require statement with the custom error NotCrossChainCall. (#3380)
ERC4626: add an extension of ERC20 that implements the ERC4626 Tokenized Vault Standard. (#3171)
SafeERC20: add safePermit as mitigation against phantom permit functions. (#3280)
Math: add a mulDiv function that can round the result either up or down. (#3171)
Math: Add a sqrt function to compute square roots of integers, rounding either up or down. (#3242)
Strings: add a new overloaded function toHexString that converts an address with fixed length of 20 bytes to its not checksummed ASCII string hexadecimal representation. (#3403)
EnumerableMap: add new UintToUintMap map type. (#3338)
EnumerableMap: add new Bytes32ToUintMap map type. (#3416)
SafeCast: add support for many more types, using procedural code generation. (#3245)
MerkleProof: add multiProofVerify to prove multiple values are part of a Merkle tree. (#3276)
MerkleProof: add calldata versions of the functions to avoid copying input arrays to memory and save gas. (#3200)
crosschain: Add a new set of contracts for cross-chain applications. CrossChainEnabled is a base contract with instantiations for several chains and bridges, and AccessControlCrossChain is an extension of access control that allows cross-chain operation. (#3183)
AccessControl: add a virtual _checkRole(bytes32) function that can be overridden to alter the onlyRole modifier behavior. (#3137)
EnumerableMap: add new AddressToUintMap map type. (#3150)
EnumerableMap: add new Bytes32ToBytes32Map map type. (#3192)
ERC20FlashMint: support infinite allowance when paying back a flash loan. (#3226)
LibArbitrumL2, CrossChainEnabledArbitrumL2: Fixed detection of cross-chain calls for EOAs. Previously, calls from EOAs would be classified as cross-chain calls. (#3578)
GovernorVotesQuorumFraction: Fixed quorum updates so they do not affect past proposals that failed due to lack of quorum. (#3561)
ERC165Checker: Added protection against large returndata. (#3587)
4.7.1
SignatureChecker: Fix an issue that causes isValidSignatureNow to revert when the target contract returns ill-encoded data. (#3552)
ERC165Checker: Fix an issue that causes supportsInterface to revert when the target contract returns ill-encoded data. (#3552)
4.7.0 (2022-06-29)
TimelockController: Migrate _call to _execute and allow inheritance and overriding similar to Governor. (#3317)
CrossChainEnabledPolygonChild: replace the require statement with the custom error NotCrossChainCall. (#3380)
ERC4626: add an extension of ERC20 that implements the ERC4626 Tokenized Vault Standard. (#3171)
SafeERC20: add safePermit as mitigation against phantom permit functions. (#3280)
Math: add a mulDiv function that can round the result either up or down. (#3171)
Math: Add a sqrt function to compute square roots of integers, rounding either up or down. (#3242)
Strings: add a new overloaded function toHexString that converts an address with fixed length of 20 bytes to its not checksummed ASCII string hexadecimal representation. (#3403)
EnumerableMap: add new UintToUintMap map type. (#3338)
EnumerableMap: add new Bytes32ToUintMap map type. (#3416)
SafeCast: add support for many more types, using procedural code generation. (#3245)
MerkleProof: add multiProofVerify to prove multiple values are part of a Merkle tree. (#3276)
MerkleProof: add calldata versions of the functions to avoid copying input arrays to memory and save gas. (#3200)
Initializable: refactored implementation of modifiers for easier understanding. (#3450)
Proxies: remove runtime check of ERC1967 storage slots. (#3455)
Breaking changes
Initializable: functions decorated with the modifier reinitializer(1) may no longer invoke each other.
4.6.0 (2022-04-26)
crosschain: Add a new set of contracts for cross-chain applications. CrossChainEnabled is a base contract with instantiations for several chains and bridges, and AccessControlCrossChain is an extension of access control that allows cross-chain operation. (#3183)
AccessControl: add a virtual _checkRole(bytes32) function that can be overridden to alter the onlyRole modifier behavior. (#3137)
EnumerableMap: add new AddressToUintMap map type. (#3150)
EnumerableMap: add new Bytes32ToBytes32Map map type. (#3192)
ERC20FlashMint: support infinite allowance when paying back a flash loan. (#3226)
ERC20Wrapper: the decimals() function now tries to fetch the value from the underlying token instance. If that calls revert, then the default value is used. (#3259)
draft-ERC20Permit: replace immutable with constant for _PERMIT_TYPEHASH since the keccak256 of string literals is treated specially and the hash is evaluated at compile time. (#3196)
ERC1155: Add a _afterTokenTransfer hook for improved extensibility. (#3166)
ERC1155URIStorage: add a new extension that implements a _setURI behavior similar to ERC721's _setTokenURI. (#3210)
DoubleEndedQueue: a new data structure that supports efficient push and pop to both front and back, useful for FIFO and LIFO queues. (#3153)
Governor: improved security of onlyGovernance modifier when using an external executor contract (e.g. a timelock) that can operate without necessarily going through the governance protocol. (#3147)
Governor: Add a way to parameterize votes. This can be used to implement voting systems such as fractionalized voting, ERC721 based voting, or any number of other systems. The params argument added to _countVote method, and included in the newly added _getVotes method, can be used by counting and voting modules respectively for such purposes. (#3043)
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Bumps @openzeppelin/contracts from 2.5.0 to 4.7.2.
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Commits
64e48204.7.2b66fe16Update changelog8fb5f57Avoid returnbomb in ERC165Checker (#3587)67b2572Keep track of historical quorum values (#3561)4337192Fix arbitrum L1 to L2 crosschain call detection (#3578)41c7b25Fix error in documentation and typo (#3567)e15862fRemove test for feature not in 4.73b8b4ba4.7.1212de08Fix issues caused by abi.decode reverting (#3552)8c49ad74.7.0Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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