Releases: OpenZeppelin/openzeppelin-contracts
v4.4.2
GovernorCompatibilityBravo
: Fix error in the encoding of calldata for proposals submitted through the compatibility interface with explicit signatures. (#3100)
v4.4.1
Initializable
: change the existinginitializer
modifier and add a newonlyInitializing
modifier to prevent reentrancy risk. (#3006)
Breaking change
It is no longer possible to call an initializer
-protected function from within another initializer
function outside the context of a constructor. Projects using OpenZeppelin upgradeable proxies should continue to work as is, since in the common case the initializer is invoked in the constructor directly. If this is not the case for you, the suggested change is to use the new onlyInitializing
modifier in the following way:
contract A {
- function initialize() public initializer { ... }
+ function initialize() internal onlyInitializing { ... }
}
contract B is A {
function initialize() public initializer {
A.initialize();
}
}
v4.4.0
Check out the first OpenZeppelin Community Call where the team discussed everything that is included in this release.
And if you missed it, we recently announced an official bug bounty program for OpenZeppelin Contracts. Check it out!
Ownable
: add an internal_transferOwnership(address)
. (#2568)AccessControl
: add internal_grantRole(bytes32,address)
and_revokeRole(bytes32,address)
. (#2568)AccessControl
: mark_setupRole(bytes32,address)
as deprecated in favor of_grantRole(bytes32,address)
. (#2568)AccessControlEnumerable
: hook into_grantRole(bytes32,address)
and_revokeRole(bytes32,address)
. (#2946)EIP712
: cacheaddress(this)
to immutable storage to avoid potential issues if a vanilla contract is used in a delegatecall context. (#2852)- Add internal
_setApprovalForAll
toERC721
andERC1155
. (#2834) Governor
: shift vote start and end by one block to better match Compound's GovernorBravo and prevent voting at the Governor level if the voting snapshot is not ready. (#2892)GovernorCompatibilityBravo
: consider quorum an inclusive rather than exclusive minimum to match Compound's GovernorBravo. (#2974)GovernorSettings
: a new governor module that manages voting settings updatable through governance actions. (#2904)PaymentSplitter
: now supports ERC20 assets in addition to Ether. (#2858)ECDSA
: add a variant oftoEthSignedMessageHash
for arbitrary length message hashing. (#2865)MerkleProof
: add aprocessProof
function that returns the rebuilt root hash given a leaf and a proof. (#2841)VestingWallet
: new contract that handles the vesting of Ether and ERC20 tokens following a customizable vesting schedule. (#2748)Governor
: enable receiving Ether when a Timelock contract is not used. (#2748)GovernorTimelockCompound
: fix ability to use Ether stored in the Timelock contract. (#2748)
v4.3.3
ERC1155Supply
: HandletotalSupply
changes by hooking into_beforeTokenTransfer
to ensure consistency of balances and supply duringIERC1155Receiver.onERC1155Received
calls.
v4.3.2
UUPSUpgradeable
: Add modifiers to preventupgradeTo
andupgradeToAndCall
being executed on any contract that is not the active ERC1967 proxy. This prevents these functions being called on implementation contracts or minimal ERC1167 clones, in particular.
v4.3.1
TimelockController
: Add additional isOperationReady check.
v3.4.2-solc-0.7
TimelockController
: Add additional isOperationReady check.
v3.4.2
v4.3.0
Visit our blog for the full 4.3 announcement as well as Governor announcement!
ERC2771Context
: use private variable from storage to store the forwarder address. Fixes issues where_msgSender()
was not callable from constructors. (#2754)EnumerableSet
: addvalues()
functions that returns an array containing all values in a single call. (#2768)Governor
: added a modular system ofGovernor
contracts based onGovernorAlpha
andGovernorBravo
. (#2672)- Add an
interfaces
folder containing solidity interfaces to final ERCs. (#2517) ECDSA
: addtryRecover
functions that will not throw if the signature is invalid, and will return an error flag instead. (#2661)SignatureChecker
: Reduce gas usage of theisValidSignatureNow
function for the "signature by EOA" case. (#2661)
v4.2.0
Read the full announcement in the blog!
ERC20Votes
: add a new extension of theERC20
token with support for voting snapshots and delegation. (#2632)ERC20VotesComp
: Variant ofERC20Votes
that is compatible with Compound'sComp
token interface but restricts supply touint96
. (#2706)ERC20Wrapper
: add a new extension of theERC20
token which wraps an underlying token. Deposit and withdraw guarantee that the total supply is backed by a corresponding amount of underlying token. (#2633)- Enumerables: Improve gas cost of removal in
EnumerableSet
andEnumerableMap
. - Enumerables: Improve gas cost of lookup in
EnumerableSet
andEnumerableMap
. Counter
: add a reset method. (#2678)- Tokens: Wrap definitely safe subtractions in
unchecked
blocks. Math
: Add aceilDiv
method for performing ceiling division.ERC1155Supply
: add a newERC1155
extension that keeps track of the totalSupply of each tokenId. (#2593)BitMaps
: add a newBitMaps
library that provides a storage efficient datastructure foruint256
tobool
mapping with contiguous keys. (#2710)
Breaking Changes
ERC20FlashMint
is no longer a Draft ERC. (#2673))
How to update: Change your import paths by removing the draft-
prefix from @openzeppelin/contracts/token/ERC20/extensions/draft-ERC20FlashMint.sol
.