Refactor double ended queue

commit d5b67d3499
Author: Hadrien Croubois <hadrien.croubois@gmail.com>
Date:   Sat Jul 8 15:40:04 2023 +0200

    Update strong-poems-thank.md

commit 909af00946
Author: Hadrien Croubois <hadrien.croubois@gmail.com>
Date:   Sat Jul 8 15:39:09 2023 +0200

    add changeset

commit 2201f657b9
Author: Hadrien Croubois <hadrien.croubois@gmail.com>
Date:   Fri Jul 7 16:08:48 2023 +0200

    remove declaration of max_uint48 with is not available by default in CVL2

commit 0b3da8c14c
Author: Hadrien Croubois <hadrien.croubois@gmail.com>
Date:   Fri Jul 7 15:19:30 2023 +0200

    update DoubleEndedQueue specs to run with certora 4.3.1

commit 734bf8e85a
Merge: 1294d4bc 7ccea54d
Author: Hadrien Croubois <hadrien.croubois@gmail.com>
Date:   Fri Jul 7 14:28:11 2023 +0200

    Merge branch 'master' into refactor/DoubleEndedQueue

commit 1294d4bc10
Author: Hadrien Croubois <hadrien.croubois@gmail.com>
Date:   Fri Jul 7 14:27:41 2023 +0200

    Update DoubleEndedQueue.sol

commit 1199e602d1
Merge: fd880a59 f29307cf
Author: Hadrien Croubois <hadrien.croubois@gmail.com>
Date:   Wed Jun 28 14:01:21 2023 +0200

    Merge branch 'master' into refactor/DoubleEndedQueue

commit fd880a598e
Author: Hadrien Croubois <hadrien.croubois@gmail.com>
Date:   Fri Mar 31 20:43:11 2023 +0200

    remove signed integers from DoubleEndedQueue

.changeset/afraid-walls-smell.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`ERC1155Receiver`: Removed in favor of `ERC1155Holder`.

.changeset/angry-ties-switch.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`TimelockController`: Changed the role architecture to use `DEFAULT_ADMIN_ROLE` as the admin for all roles, instead of the bespoke `TIMELOCK_ADMIN_ROLE` that was used previously. This aligns with the general recommendation for `AccessControl` and makes the addition of new roles easier. Accordingly, the `admin` parameter and timelock will now be granted `DEFAULT_ADMIN_ROLE` instead of `TIMELOCK_ADMIN_ROLE`. ([#3799](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3799))

.changeset/big-plums-cover.md

@@ -0,0 +1,4 @@
+---
+'openzeppelin-solidity': major
+---
+Use `abi.encodeCall` in place of `abi.encodeWithSelector` and `abi.encodeWithSignature` for improved type-checking of parameters

.changeset/blue-horses-do.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`ERC2771Forwarder`: Added `deadline` for expiring transactions, batching, and more secure handling of `msg.value`.

.changeset/blue-nails-give.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`Math`: Add `add512`, `mul512` and `mulShr`.

.changeset/blue-scissors-design.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': minor
+---
+
+`Math`: Make `ceilDiv` to revert on 0 division even if the numerator is 0

.changeset/brave-islands-sparkle.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`GovernorSequentialProposalId`: Adds a `Governor` extension that sequentially numbers proposal ids instead of using the hash.

.changeset/bright-tomatoes-sing.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`ERC20`, `ERC721`, `ERC1155`: Deleted `_beforeTokenTransfer` and `_afterTokenTransfer` hooks, added a new internal `_update` function for customizations, and refactored all extensions using those hooks to use `_update` instead. ([#3838](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3838), [#3876](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3876), [#4377](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4377))

.changeset/brown-seals-sing.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`SafeERC20`: Add `trySafeTransfer` and `trySafeTransferFrom` that do not revert and return false if the transfer is not successful.

.changeset/brown-turkeys-marry.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`ER6909TokenSupply`: Add an extension of ERC6909 which tracks total supply for each token id.

.changeset/chilled-spiders-attack.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`ERC1155Supply`: add a `totalSupply()` function that returns the total amount of token circulating, this change will restrict the total tokens minted across all ids to 2\*\*256-1 .

.changeset/clever-pumas-beg.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`Ownable`: Add an `initialOwner` parameter to the constructor, making the ownership initialization explicit.

.changeset/cyan-taxis-travel.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`Address`: bubble up revert data on `sendValue` failed call

.changeset/dirty-bananas-shake.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`ERC6909ContentURI`: Add an extension of ERC6909 which adds content URI functionality.

.changeset/eight-peaches-guess.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': minor
+---
+
+`Proxy`: Removed redundant `receive` function.

.changeset/eighty-crabs-listen.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': patch
+---
+
+Optimize `Strings.equal`

.changeset/eighty-lemons-shake.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`ERC721`: `_approve` no longer allows approving the owner of the tokenId. `_setApprovalForAll` no longer allows setting address(0) as an operator.

.changeset/empty-taxis-kiss.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`UUPSUpgradeable`, `TransparentUpgradeableProxy` and `ProxyAdmin`: Removed `upgradeTo` and `upgrade` functions, and made `upgradeToAndCall` and `upgradeAndCall` ignore the data argument if it is empty. It is no longer possible to invoke the receive function (or send value with empty data) along with an upgrade.

.changeset/fair-pumpkins-compete.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`Math`: Add saturating arithmetic operations `saturatingAdd`, `saturatingSub` and `saturatingMul`.

.changeset/famous-timers-compare.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`ERC2771Forwarder`: Expose the `_isTrustedByTarget` internal function to check whether a target trusts the forwarder.

.changeset/fast-coats-try.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`Initializable`: Add `_initializableStorageSlot` function that returns a pointer to the storage struct. The function allows customizing with a custom storage slot with an `override`.

.changeset/flat-bottles-wonder.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': minor
+---
+
+Replace some uses of `abi.encodePacked` with clearer alternatives (e.g. `bytes.concat`, `string.concat`).

.changeset/fluffy-countries-buy.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': minor
+---
+
+`Arrays`: Optimize `findUpperBound` by removing redundant SLOAD.

.changeset/four-adults-knock.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': patch
+---
+
+`ECDSA`: Use unchecked arithmetic for the `tryRecover` function that receives the `r` and `vs` short-signature fields separately.

.changeset/fresh-birds-kiss.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`Checkpoints`: library moved from `utils` to `utils/structs`

.changeset/good-cameras-rush.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`EnumerableMap`: Add `clear` function to EnumerableMaps which deletes all entries in the map.

.changeset/good-cameras-serve.md

@@ -1,5 +0,0 @@
----
-"openzeppelin-solidity": minor
----
-
-`Calldata`: Library with `emptyBytes` and `emptyString` functions to generate empty `bytes` and `string` calldata types.

.changeset/gorgeous-apes-jam.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`TimelockController`: Receive function is now virtual.

.changeset/green-drinks-report.md

@@ -1,5 +0,0 @@
----
-"openzeppelin-solidity": minor
----
-
-`Pausable`: Stop explicitly setting `paused` to `false` during construction.

.changeset/grumpy-bulldogs-call.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`Governor`: Optimized use of storage for proposal data

.changeset/grumpy-worms-tease.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`ERC1967Utils`: Refactor the `ERC1967Upgrade` abstract contract as a library.

.changeset/happy-falcons-walk.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`TransparentUpgradeableProxy`: Admin is now stored in an immutable variable (set during construction) to avoid unnecessary storage reads on every proxy call. This removed the ability to ever change the admin. Transfer of the upgrade capability is exclusively handled through the ownership of the `ProxyAdmin`.

.changeset/heavy-drinks-fail.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`ERC20`: Remove `Approval` event previously emitted in `transferFrom` to indicate that part of the allowance was consumed. With this change, allowances are no longer reconstructible from events. See the code for guidelines on how to re-enable this event if needed.

.changeset/hip-beds-provide.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+Move the logic to validate ERC-1822 during an upgrade from `ERC1967Utils` to `UUPSUpgradeable`.

.changeset/hot-coins-judge.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': minor
+---
+
+`Arrays`: Add `unsafeMemoryAccess` helpers to read from a memory array without checking the length.

.changeset/hot-dingos-kiss.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`MessageHashUtils`: Add a new library for creating message digest to be used along with signing or recovery such as  ECDSA or ERC-1271. These functions are moved from the `ECDSA` library.

.changeset/hot-plums-approve.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': minor
+---
+
+`GovernorTimelockControl`: Clean up timelock id on execution for gas refund.

.changeset/little-falcons-build.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': minor
+---
+
+`EIP712`: Add internal getters for the name and version strings

.changeset/long-walls-draw.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`IERC6909`: Add the interface for ERC-6909.

.changeset/loud-shrimps-play.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': minor
+---
+
+`TimelockController`: Add a state getter that returns an `OperationState` enum.

.changeset/lovely-geckos-hide.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+Replace revert strings and require statements with custom errors.

.changeset/lucky-teachers-sip.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`EnumerableSet`: Add `Bytes32x2Set` that handles (ordered) pairs of bytes32.

.changeset/mean-walls-watch.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`Nonces`: Added a new contract to keep track of user nonces. Used for signatures in `ERC20Permit`, `ERC20Votes`, and `ERC721Votes`. ([#3816](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3816))

.changeset/mighty-donuts-smile.md

@@ -0,0 +1,6 @@
+---
+'openzeppelin-solidity': patch
+---
+
+`Governor`: Add validation in ERC1155 and ERC721 receiver hooks to ensure Governor is the executor.
+

.changeset/orange-apes-draw.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+Switched to using explicit Solidity import statements. Some previously available symbols may now have to be separately imported.

.changeset/popular-deers-raise.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`Governor`: Add support for casting votes with ERC-1271 signatures by using a `bytes memory signature` instead of `r`, `s` and `v` arguments in the `castVoteBySig` and `castVoteWithReasonAndParamsBySig` functions.

.changeset/pretty-lobsters-tan.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`GovernorProposalGuardian`: Add a governance extension that defines a proposal guardian who can cancel proposals at any stage in their lifecycle.

.changeset/proud-cooks-do.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`ERC6909Metadata`: Add an extension of ERC6909 which adds metadata functionality.

.changeset/proud-seals-complain.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': patch
+---
+
+`BeaconProxy`: Use an immutable variable to store the address of the beacon. It is no longer possible for a `BeaconProxy` to upgrade by changing to another beacon.

.changeset/purple-cats-cheer.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`GovernorTimelockControl`: Add the Governor instance address as part of the TimelockController operation `salt` to avoid operation id collisions between governors using the same TimelockController.

.changeset/quiet-shrimps-kiss.md

@@ -1,5 +0,0 @@
----
-"openzeppelin-solidity": patch
----
-
-`MessageHashUtils`: Add `toDataWithIntendedValidatorHash(address, bytes32)`.

.changeset/red-dots-fold.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+Overrides are now used internally for a number of functions that were previously hardcoded to their default implementation in certain locations: `ERC1155Supply.totalSupply`, `ERC721.ownerOf`, `ERC721.balanceOf` and `ERC721.totalSupply` in `ERC721Enumerable`, `ERC20.totalSupply` in `ERC20FlashMint`, and `ERC1967._getImplementation` in `ERC1967Proxy`.

.changeset/rotten-insects-wash.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`ProxyAdmin`: Removed `getProxyAdmin` and `getProxyImplementation` getters. ([#3820](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3820))

.changeset/serious-books-lie.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': patch
+---
+
+`ERC1155`: Optimize array allocation.

.changeset/seven-insects-taste.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': patch
----
-
-`ERC7579Utils`: Add ABI decoding checks on calldata bounds within `decodeBatch`

.changeset/short-eels-enjoy.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+Bump minimum compiler version required to 0.8.19

.changeset/silly-bees-beam.md

@@ -0,0 +1,7 @@
+---
+'openzeppelin-solidity': major
+---
+
+`ERC20Votes`: Changed internal vote accounting to reusable `Votes` module previously used by `ERC721Votes`. Removed implicit `ERC20Permit` inheritance. Note that the `DOMAIN_SEPARATOR` getter was previously guaranteed to be available for `ERC20Votes` contracts, but is no longer available unless `ERC20Permit` is explicitly used; ERC-5267 support is included in `ERC20Votes` with `EIP712` and is recommended as an alternative.
+
+pr: #3816

.changeset/sixty-numbers-reply.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`Governor`: Add `voter` and `nonce` parameters in signed ballots, to avoid forging signatures for random addresses, prevent signature replay, and allow invalidating signatures. Add `voter` as a new parameter in the `castVoteBySig` and `castVoteWithReasonAndParamsBySig` functions.

.changeset/sixty-tips-wink.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`EnumerableSet`: Add `clear` function to EnumerableSets which deletes all values in the set.

.changeset/slimy-penguins-attack.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`TransparentUpgradeableProxy`: Removed `admin` and `implementation` getters, which were only callable by the proxy owner and thus not very useful. ([#3820](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3820))

.changeset/smooth-books-wink.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`ERC1155`: Remove check for address zero in `balanceOf`.

.changeset/spicy-sheep-eat.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`access`: Move `AccessControl` extensions to a dedicated directory.

.changeset/spotty-hotels-type.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': patch
+---
+
+`ERC721Consecutive`: Add a `_firstConsecutiveId` internal function that can be overridden to change the id of the first token minted through `_mintConsecutive`.

.changeset/strong-poems-thank.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`DoubleEndedQueue`: refactor internal structure to use `uint128` instead of `int128`. This has no effect on the library interface.

.changeset/swift-bags-divide.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': patch
+---
+
+`Governor`: Add a mechanism to restrict the address of the proposer using a suffix in the description.

.changeset/tasty-tomatoes-turn.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`Strings`: Rename `toString(int256)` to `toStringSigned(int256)`.

.changeset/ten-fishes-fold.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`IGovernor`: Add the `getProposalId` function to the governor interface.

.changeset/ten-hats-begin.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`ERC6909`: Add a standard implementation of ERC6909.

.changeset/ten-peas-mix.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': minor
----
-
-`Hashes`: Expose `efficientKeccak256` for hashing non-commutative pairs of bytes32 without allocating extra memory.

.changeset/tender-shirts-turn.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`BeaconProxy`: Reject value in initialization unless a payable function is explicitly invoked.

.changeset/thin-camels-matter.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': minor
+---
+
+`ERC1155`: Bubble errors triggered in the `onERC1155Received` and `onERC1155BatchReceived` hooks.

.changeset/thin-eels-cross.md

@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': patch
----
-
-`ERC4626`: Use the `asset` getter in `totalAssets`, `_deposit` and `_withdraw`.

.changeset/tough-drinks-hammer.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': patch
+---
+
+`ERC1155`: Optimize array accesses by skipping bounds checking when unnecessary.

.changeset/violet-dancers-cough.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': minor
+---
+
+Remove the `override` specifier from functions that only override a single interface function.

.changeset/wild-rockets-rush.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`Math`: Renamed members of `Rounding` enum, and added a new rounding mode for "away from zero".

.changeset/wild-windows-trade.md

@@ -0,0 +1,5 @@
+---
+'openzeppelin-solidity': major
+---
+
+`SafeERC20`: Refactor `safeDecreaseAllowance` and `safeIncreaseAllowance` to support USDT-like tokens.

.codecov.yml

@@ -10,7 +10,3 @@ coverage:
     project:
       default:
         threshold: 1%
-ignore:
-  - "test"
-  - "contracts/mocks"
-  - "contracts/vendor"

.eslintrc

@@ -0,0 +1,20 @@
+{
+  "root": true,
+  "extends" : [
+    "eslint:recommended",
+    "prettier",
+  ],
+  "env": {
+    "es2022": true,
+    "browser": true,
+    "node": true,
+    "mocha": true,
+  },
+  "globals" : {
+    "artifacts": "readonly",
+    "contract": "readonly",
+    "web3": "readonly",
+    "extendEnvironment": "readonly",
+    "expect": "readonly",
+  }
+}

.github/ISSUE_TEMPLATE/bug_report.md

@@ -10,7 +10,7 @@ about: Report a bug in OpenZeppelin Contracts
 
 **💻 Environment**
 
-<!-- Tell us what version of OpenZeppelin Contracts you're using, and how you're using it: Hardhat, Remix, etc. -->
+<!-- Tell us what version of OpenZeppelin Contracts you're using, and how you're using it: Truffle, Remix, etc. -->
 
 **📝 Details**
 

.github/actions/gas-compare/action.yml

@@ -1,5 +1,4 @@
 name: Compare gas costs
-description: Compare gas costs between branches
 inputs:
   token:
     description: github token
@@ -44,8 +43,7 @@ runs:
       shell: bash
     - name: Save report
       if: github.event_name != 'pull_request'
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v3
       with:
         name: gasreport
-        overwrite: true
         path: ${{ inputs.out_report }}

.github/actions/setup/action.yml

@@ -1,13 +1,12 @@
 name: Setup
-description: Common environment setup
 
 runs:
   using: composite
   steps:
-    - uses: actions/setup-node@v4
+    - uses: actions/setup-node@v3
       with:
-        node-version: 20.x
-    - uses: actions/cache@v4
+        node-version: 14.x
+    - uses: actions/cache@v3
       id: cache
       with:
         path: '**/node_modules'
@@ -16,7 +15,5 @@ runs:
       run: npm ci
       shell: bash
       if: steps.cache.outputs.cache-hit != 'true'
-    - name: Install Foundry
-      uses: foundry-rs/foundry-toolchain@v1
-      with:
-        version: stable
+      env:
+        SKIP_COMPILE: true

.github/actions/storage-layout/action.yml

@@ -1,5 +1,4 @@
 name: Compare storage layouts
-description: Compare storage layouts between branches
 inputs:
   token:
     description: github token
@@ -50,8 +49,7 @@ runs:
       shell: bash
     - name: Save artifacts
       if: github.event_name != 'pull_request'
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v3
       with:
         name: layout
-        overwrite: true
         path: ${{ inputs.out_layout }}

.github/workflows/actionlint.yml

@@ -9,7 +9,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Add problem matchers
         run: |
           # https://github.com/rhysd/actionlint/blob/3a2f2c7/docs/usage.md#problem-matchers

.github/workflows/changeset.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'ignore-changeset') }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           fetch-depth: 0 # Include history so Changesets finds merge-base
       - name: Set up environment

.github/workflows/checks.yml

@@ -14,13 +14,13 @@ concurrency:
   cancel-in-progress: true
 
 env:
-  NODE_OPTIONS: --max_old_space_size=8192
+  NODE_OPTIONS: --max_old_space_size=5120
 
 jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Set up environment
         uses: ./.github/actions/setup
       - run: npm run lint
@@ -29,20 +29,15 @@ jobs:
     runs-on: ubuntu-latest
     env:
       FORCE_COLOR: 1
-      # Needed for "eth-gas-reporter" to produce a "gasReporterOutput.json" as documented in
-      # https://github.com/cgewecke/eth-gas-reporter/blob/v0.2.27/docs/gasReporterOutput.md
-      CI: true
       GAS: true
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Set up environment
         uses: ./.github/actions/setup
       - name: Run tests and generate gas report
         run: npm run test
       - name: Check linearisation of the inheritance graph
         run: npm run test:inheritance
-      - name: Check pragma consistency between files
-        run: npm run test:pragma
       - name: Check proceduraly generated contracts are up-to-date
         run: npm run test:generation
       - name: Compare gas costs
@@ -55,78 +50,64 @@ jobs:
     env:
       FORCE_COLOR: 1
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           fetch-depth: 0 # Include history so patch conflicts are resolved automatically
       - name: Set up environment
         uses: ./.github/actions/setup
-      - name: Copy non-upgradeable contracts as dependency
-        run: |
-          mkdir -p lib/openzeppelin-contracts
-          cp -rnT contracts lib/openzeppelin-contracts/contracts
       - name: Transpile to upgradeable
         run: bash scripts/upgradeable/transpile.sh
       - name: Run tests
         run: npm run test
       - name: Check linearisation of the inheritance graph
         run: npm run test:inheritance
-      - name: Check pragma consistency between files
-        run: npm run test:pragma
       - name: Check storage layout
         uses: ./.github/actions/storage-layout
-        continue-on-error: ${{ contains(github.event.pull_request.labels.*.name, 'breaking change') }}
         with:
           token: ${{ github.token }}
 
   tests-foundry:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           submodules: recursive
-      - name: Set up environment
-        uses: ./.github/actions/setup
+      - name: Install Foundry
+        uses: foundry-rs/foundry-toolchain@v1
+        with:
+          version: nightly
       - name: Run tests
         run: forge test -vv
 
   coverage:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Set up environment
         uses: ./.github/actions/setup
-      - name: Run coverage
-        run: npm run coverage
-      - uses: codecov/codecov-action@v5
-        env:
-          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
-
-  harnesses:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - name: Set up environment
-        uses: ./.github/actions/setup
-      - name: Compile harnesses
-        run: |
-          make -C certora apply
-          npm run compile:harnesses
+      - run: npm run coverage
+      - uses: codecov/codecov-action@v3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
 
   slither:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Set up environment
         uses: ./.github/actions/setup
-      - uses: crytic/slither-action@v0.4.0
+      - run: rm foundry.toml
+      - uses: crytic/slither-action@v0.3.0
+        with:
+          node-version: 18.15
 
   codespell:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Run CodeSpell
-        uses: codespell-project/actions-codespell@v2.1
+        uses: codespell-project/actions-codespell@v2.0
         with:
           check_hidden: true
           check_filenames: true
-          skip: package-lock.json,*.pdf,vendor
+          skip: package-lock.json,*.pdf

.github/workflows/docs.yml

@@ -11,7 +11,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Set up environment
         uses: ./.github/actions/setup
       - run: bash scripts/git-user-config.sh

.github/workflows/formal-verification.yml

@@ -10,9 +10,9 @@ on:
   workflow_dispatch: {}
 
 env:
-  PIP_VERSION: '3.11'
+  PIP_VERSION: '3.10'
   JAVA_VERSION: '11'
-  SOLC_VERSION: '0.8.20'
+  SOLC_VERSION: '0.8.19'
 
 concurrency: ${{ github.workflow }}-${{ github.ref }}
 
@@ -20,7 +20,7 @@ jobs:
   apply-diff:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Apply patches
         run: make -C certora apply
 
@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name != 'pull_request' || contains(github.event.pull_request.labels.*.name, 'formal-verification')
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           fetch-depth: 0
       - name: Set up environment
@@ -44,15 +44,14 @@ jobs:
           fi
           echo "result=$RESULT" >> "$GITHUB_OUTPUT"
       - name: Install python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ env.PIP_VERSION }}
           cache: 'pip'
-          cache-dependency-path: 'fv-requirements.txt'
       - name: Install python packages
-        run: pip install -r fv-requirements.txt
+        run: pip install -r requirements.txt
       - name: Install java
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v3
         with:
           distribution: temurin
           java-version: ${{ env.JAVA_VERSION }}
@@ -67,20 +66,3 @@ jobs:
           node certora/run.js ${{ steps.arguments.outputs.result }} >> "$GITHUB_STEP_SUMMARY"
         env:
           CERTORAKEY: ${{ secrets.CERTORAKEY }}
-
-  halmos:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - name: Set up environment
-        uses: ./.github/actions/setup
-      - name: Install python
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{ env.PIP_VERSION }}
-          cache: 'pip'
-          cache-dependency-path: 'fv-requirements.txt'
-      - name: Install python packages
-        run: pip install -r fv-requirements.txt
-      - name: Run Halmos
-        run: halmos --match-test '^symbolic|^testSymbolic' -vv

.github/workflows/release-cycle.yml

@@ -27,12 +27,12 @@ jobs:
       pull-requests: read
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Set up environment
         uses: ./.github/actions/setup
       - id: state
         name: Get state
-        uses: actions/github-script@v7
+        uses: actions/github-script@v6
         env:
           TRIGGERING_ACTOR: ${{ github.triggering_actor }}
         with:
@@ -58,7 +58,7 @@ jobs:
     if: needs.state.outputs.start == 'true'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Set up environment
         uses: ./.github/actions/setup
       - run: bash scripts/git-user-config.sh
@@ -66,7 +66,7 @@ jobs:
         name: Create branch with release candidate
         run: bash scripts/release/workflow/start.sh
       - name: Re-run workflow
-        uses: actions/github-script@v7
+        uses: actions/github-script@v6
         env:
           REF: ${{ steps.start.outputs.branch }}
         with:
@@ -81,7 +81,7 @@ jobs:
     if: needs.state.outputs.promote == 'true'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Set up environment
         uses: ./.github/actions/setup
       - run: bash scripts/git-user-config.sh
@@ -89,7 +89,7 @@ jobs:
         if: needs.state.outputs.is_prerelease == 'true'
         run: bash scripts/release/workflow/exit-prerelease.sh
       - name: Re-run workflow
-        uses: actions/github-script@v7
+        uses: actions/github-script@v6
         with:
           script: await require('./scripts/release/workflow/rerun.js')({ github, context })
 
@@ -102,13 +102,13 @@ jobs:
     if: needs.state.outputs.changesets == 'true'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           fetch-depth: 0 # To get all tags
       - name: Set up environment
         uses: ./.github/actions/setup
       - name: Set release title
-        uses: actions/github-script@v7
+        uses: actions/github-script@v6
         with:
           result-encoding: string
           script: await require('./scripts/release/workflow/set-changesets-pr-title.js')({ core })
@@ -134,7 +134,7 @@ jobs:
     if: needs.state.outputs.publish == 'true'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Set up environment
         uses: ./.github/actions/setup
       - id: pack
@@ -143,18 +143,22 @@ jobs:
         env:
           PRERELEASE: ${{ needs.state.outputs.is_prerelease }}
       - name: Upload tarball artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
           name: ${{ github.ref_name }}
           path: ${{ steps.pack.outputs.tarball }}
+      - name: Tag
+        run: npx changeset tag
       - name: Publish
         run: bash scripts/release/workflow/publish.sh
         env:
           NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
           TARBALL: ${{ steps.pack.outputs.tarball }}
           TAG: ${{ steps.pack.outputs.tag }}
+      - name: Push tags
+        run: git push --tags
       - name: Create Github Release
-        uses: actions/github-script@v7
+        uses: actions/github-script@v6
         env:
           PRERELEASE: ${{ needs.state.outputs.is_prerelease }}
         with:
@@ -167,10 +171,12 @@ jobs:
     name: Tarball Integrity Check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Download tarball artifact
         id: artifact
-        uses: actions/download-artifact@v4
+        # Replace with actions/upload-artifact@v3 when
+        # https://github.com/actions/download-artifact/pull/194 gets released
+        uses: actions/download-artifact@e9ef242655d12993efdcda9058dee2db83a2cb9b
         with:
           name: ${{ github.ref_name }}
       - name: Check integrity
@@ -189,7 +195,7 @@ jobs:
     env:
       MERGE_BRANCH: merge/${{ github.ref_name }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           fetch-depth: 0 # All branches
       - name: Set up environment
@@ -200,7 +206,7 @@ jobs:
           git checkout -B "$MERGE_BRANCH" "$GITHUB_REF_NAME"
           git push -f origin "$MERGE_BRANCH"
       - name: Create PR back to master
-        uses: actions/github-script@v7
+        uses: actions/github-script@v6
         with:
           script: |
             await github.rest.pulls.create({

.github/workflows/upgradeable.yml

@@ -11,24 +11,20 @@ jobs:
     environment: push-upgradeable
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           repository: OpenZeppelin/openzeppelin-contracts-upgradeable
           fetch-depth: 0
           token: ${{ secrets.GH_TOKEN_UPGRADEABLE }}
       - name: Fetch current non-upgradeable branch
         run: |
-          git fetch "$REMOTE" master # Fetch default branch first for patch to apply cleanly
-          git fetch "$REMOTE" "$REF"
+          git fetch "https://github.com/${{ github.repository }}.git" "$REF"
           git checkout FETCH_HEAD
         env:
           REF: ${{ github.ref }}
-          REMOTE: https://github.com/${{ github.repository }}.git
       - name: Set up environment
         uses: ./.github/actions/setup
       - run: bash scripts/git-user-config.sh
       - name: Transpile to upgradeable
         run: bash scripts/upgradeable/transpile-onto.sh ${{ github.ref_name }} origin/${{ github.ref_name }}
-        env:
-          SUBMODULE_REMOTE: https://github.com/${{ github.repository }}.git
       - run: git push origin ${{ github.ref_name }}

.gitignore

@@ -29,15 +29,20 @@ npm-debug.log
 # local env variables
 .env
 
+# truffle build directory
+build/
+
 # macOS
 .DS_Store
 
+# truffle
+.node-xmlhttprequest-*
+
 # IntelliJ IDE
 .idea
 
 # docs artifacts
 docs/modules/api
-build/site
 
 # only used to package @openzeppelin/contracts
 contracts/build/
@@ -58,7 +63,6 @@ contracts-exposed
 
 # Foundry
 /out
-/cache_forge
 
 # Certora
 .certora*

.gitmodules

@@ -5,6 +5,3 @@
 [submodule "lib/erc4626-tests"]
 	path = lib/erc4626-tests
 	url = https://github.com/a16z/erc4626-tests.git
-[submodule "lib/halmos-cheatcodes"]
-	path = lib/halmos-cheatcodes
-	url = https://github.com/a16z/halmos-cheatcodes

.husky/pre-commit

@@ -1,2 +0,0 @@
-npm run test:generation
-npx lint-staged

.prettierrc

@@ -10,6 +10,5 @@
         "singleQuote": false
       }
     }
-  ],
-  "plugins": ["prettier-plugin-solidity"]
+  ]
 }

.solcover.js

@@ -10,12 +10,4 @@ module.exports = {
     fgrep: '[skip-on-coverage]',
     invert: true,
   },
-  // Work around stack too deep for coverage
-  configureYulOptimizer: true,
-  solcOptimizerDetails: {
-    yul: true,
-    yulDetails: {
-      optimizerSteps: '',
-    },
-  },
 };

CHANGELOG.md

@@ -1,181 +1,12 @@
 # Changelog
 
-### Breaking Changes
+## Unreleased
 
-- Replace `GovernorCountingOverridable.VoteReceipt` struct parameter member names `hasOverriden` and `overridenWeight` for `hasOverridden` and `overriddenWeight` respectively.
+> **Warning** Version 5.0 is under active development and should not be used. Install the releases from npm or use the version tags in the repository.
 
-#### Custom error changes
+### Removals
 
-- Replace `GovernorAlreadyOverridenVote` with `GovernorAlreadyOverriddenVote`.
-
-## 5.2.0 (2025-01-08)
-
-### Breaking Changes
-
-#### Custom error changes
-
-This version comes with changes to the custom error identifiers. Contracts previously depending on the following errors should be replaced accordingly:
-
-- Replace `Errors.FailedCall` with a bubbled-up revert reason in `Address.sendValue`.
-
-### Changes by category
-
-#### General
-
-- Update some pragma directives to ensure that all file requirements match that of the files they import. ([#5273](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5273))
-
-#### Account
-
-- `ERC4337Utils`: Add a reusable library to manipulate user operations and interact with ERC-4337 contracts ([#5274](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5274))
-- `ERC7579Utils`: Add a reusable library to interact with ERC-7579 modular accounts ([#5274](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5274))
-
-#### Governance
-
-- `GovernorCountingOverridable`: Add a governor counting module that enables token holders to override the vote of their delegate. ([#5192](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5192))
-- `VotesExtended`: Create an extension of `Votes` which checkpoints balances and delegates. ([#5192](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5192))
-
-### Proxy
-
-- `Clones`: Add `cloneWithImmutableArgs` and `cloneDeterministicWithImmutableArgs` variants that create clones with per-instance immutable arguments. The immutable arguments can be retrieved using `fetchCloneArgs`. The corresponding `predictDeterministicWithImmutableArgs` function is also included. ([#5109](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5109))
-
-### Tokens
-
-- `ERC1363Utils`: Add helper similar to the existing `ERC721Utils` and `ERC1155Utils` ([#5133](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5133))
-
-### Utils
-
-- `Address`: bubble up revert data on `sendValue` failed call ([#5418](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5418))
-- `Bytes`: Add a library of common operations that operate on `bytes` objects. ([#5252](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5252))
-- `CAIP2` and `CAIP10`: Add libraries for formatting and parsing CAIP-2 and CAIP-10 identifiers. ([#5252](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5252))
-- `NoncesKeyed`: Add a variant of `Nonces` that implements the ERC-4337 entrypoint nonce system. ([#5272](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5272))
-- `Packing`: Add variants for packing `bytes10` and `bytes22` ([#5274](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5274))
-- `Strings`: Add `parseUint`, `parseInt`, `parseHexUint` and `parseAddress` to parse strings into numbers and addresses. Also provide variants of these functions that parse substrings, and `tryXxx` variants that do not revert on invalid input. ([#5166](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5166))
-
-## 5.1.0 (2024-10-17)
-
-### Breaking changes
-
-- `ERC1967Utils`: Removed duplicate declaration of the `Upgraded`, `AdminChanged` and `BeaconUpgraded` events. These events are still available through the `IERC1967` interface located under the `contracts/interfaces/` directory. Minimum pragma version is now 0.8.21.
-- `Governor`, `GovernorCountingSimple`: The `_countVote` virtual function now returns an `uint256` with the total votes cast. This change allows for more flexibility for partial and fractional voting. Upgrading users may get a compilation error that can be fixed by adding a return statement to the `_countVote` function.
-
-#### Custom error changes
-
-This version comes with changes to the custom error identifiers. Contracts previously depending on the following errors should be replaced accordingly:
-
-- Replace `Address.FailedInnerCall` with `Errors.FailedCall`
-- Replace `Address.AddressInsufficientBalance` with `Errors.InsufficientBalance`
-- Replace `Clones.Create2InsufficientBalance` with `Errors.InsufficientBalance`
-- Replace `Clones.ERC1167FailedCreateClone` with `Errors.FailedDeployment`
-- Replace `Clones.Create2FailedDeployment` with `Errors.FailedDeployment`
-- `SafeERC20`: Replace `Address.AddressEmptyCode` with `SafeERC20FailedOperation` if there is no code at the token's address.
-- `SafeERC20`: Replace generic `Error(string)` with `SafeERC20FailedOperation` if the returned data can't be decoded as `bool`.
-- `SafeERC20`: Replace generic `SafeERC20FailedOperation` with the revert message from the contract call if it fails.
-
-### Changes by category
-
-#### General
-
-- `AccessManager`, `VestingWallet`, `TimelockController` and `ERC2771Forwarder`: Added a public `initializer` function in their corresponding upgradeable variants. ([#5008](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5008))
-
-#### Access
-
-- `AccessControlEnumerable`: Add a `getRoleMembers` method to return all accounts that have `role`. ([#4546](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4546))
-- `AccessManager`: Allow the `onlyAuthorized` modifier to restrict functions added to the manager. ([#5014](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5014))
-
-#### Finance
-
-- `VestingWalletCliff`: Add an extension of the `VestingWallet` contract with an added cliff. ([#4870](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4870))
-
-#### Governance
-
-- `GovernorCountingFractional`: Add a governor counting module that allows distributing voting power amongst 3 options (For, Against, Abstain). ([#5045](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5045))
-- `Votes`: Set `_moveDelegateVotes` visibility to internal instead of private. ([#5007](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5007))
-
-#### Proxy
-
-- `Clones`: Add version of `clone` and `cloneDeterministic` that support sending value at creation. ([#4936](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4936))
-- `TransparentUpgradeableProxy`: Make internal `_proxyAdmin()` getter have `view` visibility. ([#4688](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4688))
-- `ProxyAdmin`: Fixed documentation for `UPGRADE_INTERFACE_VERSION` getter. ([#5031](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5031))
-
-#### Tokens
-
-- `ERC1363`: Add implementation of the token payable standard allowing execution of contract code after transfers and approvals. ([#4631](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4631))
-- `ERC20TemporaryApproval`: Add an ERC-20 extension that implements temporary approval using transient storage, based on ERC7674 (draft). ([#5071](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5071))
-- `SafeERC20`: Add "relaxed" function for interacting with ERC-1363 functions in a way that is compatible with EOAs. ([#4631](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4631))
-- `SafeERC20`: Document risks of `safeIncreaseAllowance` and `safeDecreaseAllowance` when associated with ERC-7674. ([#5262](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5262))
-- `ERC721Utils` and `ERC1155Utils`: Add reusable libraries with functions to perform acceptance checks on `IERC721Receiver` and `IERC1155Receiver` implementers. ([#4845](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4845))
-- `ERC1363Utils`: Add helper similar to the existing ERC721Utils and ERC1155Utils. ([#5133](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5133))
-
-#### Utils
-
-- `Arrays`: add a `sort` functions for `address[]`, `bytes32[]` and `uint256[]` memory arrays. ([#4846](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4846))
-- `Arrays`: add new functions `lowerBound`, `upperBound`, `lowerBoundMemory` and `upperBoundMemory` for lookups in sorted arrays with potential duplicates. ([#4842](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4842))
-- `Arrays`: deprecate `findUpperBound` in favor of the new `lowerBound`. ([#4842](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4842))
-- `Base64`: Add `encodeURL` following section 5 of RFC4648 for URL encoding ([#4822](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4822))
-- `Comparator`: A library of comparator functions, useful for customizing the behavior of the Heap structure. ([#5084](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5084))
-- `Create2`: Bubbles up returndata from a deployed contract that reverted during construction. ([#5052](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5052))
-- `Create2`, `Clones`: Mask `computeAddress` and `cloneDeterministic` outputs to produce a clean value for an `address` type (i.e. only use 20 bytes) ([#4941](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4941))
-- `Errors`: New library of common custom errors. ([#4936](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4936))
-- `Hashes`: A library with commonly used hash functions. ([#3617](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3617))
-- `Packing`: Added a new utility for packing, extracting and replacing bytesXX values. ([#4992](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4992))
-- `Panic`: Add a library for reverting with panic codes. ([#3298](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3298))
-- `ReentrancyGuardTransient`: Added a variant of `ReentrancyGuard` that uses transient storage. ([#4988](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4988))
-- `Strings`: Added a utility function for converting an address to checksummed string. ([#5067](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5067))
-- `SlotDerivation`: Add a library of methods for derivating common storage slots. ([#4975](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4975))
-- `TransientSlot`: Add primitives for operating on the transient storage space using a typed-slot representation. ([#4980](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4980))
-
-##### Cryptography
-
-- `SignatureChecker`: refactor `isValidSignatureNow` to avoid validating ECDSA signatures if there is code deployed at the signer's address. ([#4951](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4951))
-- `MerkleProof`: Add variations of `verify`, `processProof`, `multiProofVerify` and `processMultiProof` (and equivalent calldata version) with support for custom hashing functions. ([#4887](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4887))
-- `P256`: Library for verification and public key recovery of P256 (aka secp256r1) signatures. ([#4881](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4881))
-- `RSA`: Library to verify signatures according to RFC 8017 Signature Verification Operation ([#4952](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4952))
-
-#### Math
-
-- `Math`: add an `invMod` function to get the modular multiplicative inverse of a number in Z/nZ. ([#4839](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4839))
-- `Math`: Add `modExp` function that exposes the `EIP-198` precompile. Includes `uint256` and `bytes memory` versions. ([#3298](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3298))
-- `Math`: Custom errors replaced with native panic codes. ([#3298](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3298))
-- `Math`, `SignedMath`: Add a branchless `ternary` function that computes`cond ? a : b` in constant gas cost. ([#4976](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4976))
-- `SafeCast`: Add `toUint(bool)` for operating on `bool` values as `uint256`. ([#4878](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4878))
-
-#### Structures
-
-- `CircularBuffer`: Add a data structure that stores the last `N` values pushed to it. ([#4913](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4913))
-- `DoubleEndedQueue`: Custom errors replaced with native panic codes. ([#4872](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4872))
-- `EnumerableMap`: add `UintToBytes32Map`, `AddressToAddressMap`, `AddressToBytes32Map` and `Bytes32ToAddressMap`. ([#4843](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4843))
-- `Heap`: A data structure that implements a heap-based priority queue. ([#5084](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/5084))
-- `MerkleTree`: A data structure that allows inserting elements into a merkle tree and updating its root hash. ([#3617](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3617))
-
-## 5.0.2 (2024-02-29)
-
-- `Base64`: Fix issue where dirty memory located just after the input buffer is affecting the result. ([#4926](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4926))
-
-## 5.0.1 (2023-12-07)
-
-- `ERC2771Context` and `Context`: Introduce a `_contextPrefixLength()` getter, used to trim extra information appended to `msg.data`.
-- `Multicall`: Make aware of non-canonical context (i.e. `msg.sender` is not `_msgSender()`), allowing compatibility with `ERC2771Context`.
-
-## 5.0.0 (2023-10-05)
-
-### Additions Summary
-
-The following contracts and libraries were added:
-
-- `AccessManager`: A consolidated system for managing access control in complex systems.
-  - `AccessManaged`: A module for connecting a contract to an authority in charge of its access control.
-  - `GovernorTimelockAccess`: An adapter for time-locking governance proposals using an `AccessManager`.
-  - `AuthorityUtils`: A library of utilities for interacting with authority contracts.
-- `GovernorStorage`: A Governor module that stores proposal details in storage.
-- `ERC2771Forwarder`: An ERC2771 forwarder for meta transactions.
-- `ERC1967Utils`: A library with ERC1967 events, errors and getters.
-- `Nonces`: An abstraction for managing account nonces.
-- `MessageHashUtils`: A library for producing digests for ECDSA operations.
-- `Time`: A library with helpers for manipulating time-related objects.
-
-### Removals Summary
-
-The following contracts, libraries, and functions were removed:
+The following contracts, libraries and functions were removed:
 
 - `Address.isContract` (because of its ambiguous nature and potential for misuse)
 - `Checkpoints.History`
@@ -199,249 +30,51 @@ The following contracts, libraries, and functions were removed:
 
 These removals were implemented in the following PRs: [#3637](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3637), [#3880](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3880), [#3945](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3945), [#4258](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4258), [#4276](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4276), [#4289](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4289)
 
-### Changes by category
-
-#### General
-
-- Replaced revert strings and require statements with custom errors. ([#4261](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4261))
-- Bumped minimum compiler version required to 0.8.20 ([#4288](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4288), [#4489](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4489))
-- Use of `abi.encodeCall` in place of `abi.encodeWithSelector` and `abi.encodeWithSignature` for improved type-checking of parameters ([#4293](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4293))
-- Replaced some uses of `abi.encodePacked` with clearer alternatives (e.g. `bytes.concat`, `string.concat`). ([#4504](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4504)) ([#4296](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4296))
-- Overrides are now used internally for a number of functions that were previously hardcoded to their default implementation in certain locations: `ERC1155Supply.totalSupply`, `ERC721.ownerOf`, `ERC721.balanceOf` and `ERC721.totalSupply` in `ERC721Enumerable`, `ERC20.totalSupply` in `ERC20FlashMint`, and `ERC1967._getImplementation` in `ERC1967Proxy`. ([#4299](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4299))
-- Removed the `override` specifier from functions that only override a single interface function. ([#4315](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4315))
-- Switched to using explicit Solidity import statements. Some previously available symbols may now have to be separately imported. ([#4399](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4399))
-- `Governor`, `Initializable`, and `UUPSUpgradeable`: Use internal functions in modifiers to optimize bytecode size. ([#4472](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4472))
-- Upgradeable contracts now use namespaced storage (EIP-7201). ([#4534](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4534))
-- Upgradeable contracts no longer transpile interfaces and libraries. ([#4628](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4628))
-
-#### Access
-
-- `Ownable`: Added an `initialOwner` parameter to the constructor, making the ownership initialization explicit. ([#4267](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4267))
-- `Ownable`: Prevent using address(0) as the initial owner. ([#4531](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4531))
-- `AccessControl`: Added a boolean return value to the internal `_grantRole` and `_revokeRole` functions indicating whether the role was granted or revoked. ([#4241](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4241))
-- `access`: Moved `AccessControl` extensions to a dedicated directory. ([#4359](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4359))
-- `AccessManager`: Added a new contract for managing access control of complex systems in a consolidated location. ([#4121](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4121))
-- `AccessManager`, `AccessManaged`, `GovernorTimelockAccess`: Ensure that calldata shorter than 4 bytes is not padded to 4 bytes. ([#4624](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4624))
-- `AccessManager`: Use named return parameters in functions that return multiple values. ([#4624](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4624))
-- `AccessManager`: Make `schedule` and `execute` more conservative when delay is 0. ([#4644](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4644))
-
-#### Finance
-
-- `VestingWallet`: Fixed revert during 1 second time window when duration is 0. ([#4502](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4502))
-- `VestingWallet`: Use `Ownable` instead of an immutable `beneficiary`. ([#4508](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4508))
-
-#### Governance
-
-- `Governor`: Optimized use of storage for proposal data ([#4268](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4268))
-- `Governor`: Added validation in ERC1155 and ERC721 receiver hooks to ensure Governor is the executor. ([#4314](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4314))
-- `Governor`: Refactored internals to implement common queuing logic in the core module of the Governor. Added `queue` and `_queueOperations` functions that act at different levels. Modules that implement queuing via timelocks are expected to override `_queueOperations` to implement the timelock-specific logic. Added `_executeOperations` as the equivalent for execution. ([#4360](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4360))
-- `Governor`: Added `voter` and `nonce` parameters in signed ballots, to avoid forging signatures for random addresses, prevent signature replay, and allow invalidating signatures. Add `voter` as a new parameter in the `castVoteBySig` and `castVoteWithReasonAndParamsBySig` functions. ([#4378](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4378))
-- `Governor`: Added support for casting votes with ERC-1271 signatures by using a `bytes memory signature` instead of `r`, `s` and `v` arguments in the `castVoteBySig` and `castVoteWithReasonAndParamsBySig` functions. ([#4418](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4418))
-- `Governor`: Added a mechanism to restrict the address of the proposer using a suffix in the description.
-- `GovernorStorage`: Added a new governor extension that stores the proposal details in storage, with an interface that operates on `proposalId`, as well as proposal enumerability. This replaces the old `GovernorCompatibilityBravo` module. ([#4360](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4360))
-- `GovernorTimelockAccess`: Added a module to connect a governor with an instance of `AccessManager`, allowing the governor to make calls that are delay-restricted by the manager using the normal `queue` workflow. ([#4523](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4523))
-- `GovernorTimelockControl`: Clean up timelock id on execution for gas refund. ([#4118](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4118))
-- `GovernorTimelockControl`: Added the Governor instance address as part of the TimelockController operation `salt` to avoid operation id collisions between governors using the same TimelockController. ([#4432](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4432))
-- `TimelockController`: Changed the role architecture to use `DEFAULT_ADMIN_ROLE` as the admin for all roles, instead of the bespoke `TIMELOCK_ADMIN_ROLE` that was used previously. This aligns with the general recommendation for `AccessControl` and makes the addition of new roles easier. Accordingly, the `admin` parameter and timelock will now be granted `DEFAULT_ADMIN_ROLE` instead of `TIMELOCK_ADMIN_ROLE`. ([#3799](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3799))
-- `TimelockController`: Added a state getter that returns an `OperationState` enum. ([#4358](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4358))
-- `Votes`: Use Trace208 for checkpoints. This enables EIP-6372 clock support for keys but reduces the max supported voting power to uint208. ([#4539](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4539))
-
-#### Metatx
-
-- `ERC2771Forwarder`: Added `deadline` for expiring transactions, batching, and more secure handling of `msg.value`. ([#4346](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4346))
-- `ERC2771Context`: Return the forwarder address whenever the `msg.data` of a call originating from a trusted forwarder is not long enough to contain the request signer address (i.e. `msg.data.length` is less than 20 bytes), as specified by ERC-2771. ([#4481](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4481))
-- `ERC2771Context`: Prevent revert in `_msgData()` when a call originating from a trusted forwarder is not long enough to contain the request signer address (i.e. `msg.data.length` is less than 20 bytes). Return the full calldata in that case. ([#4484](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4484))
-
-#### Proxy
-
-- `ProxyAdmin`: Removed `getProxyAdmin` and `getProxyImplementation` getters. ([#3820](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3820))
-- `TransparentUpgradeableProxy`: Removed `admin` and `implementation` getters, which were only callable by the proxy owner and thus not very useful. ([#3820](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3820))
-- `ERC1967Utils`: Refactored the `ERC1967Upgrade` abstract contract as a library. ([#4325](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4325))
-- `TransparentUpgradeableProxy`: Admin is now stored in an immutable variable (set during construction) to avoid unnecessary storage reads on every proxy call. This removed the ability to ever change the admin. Transfer of the upgrade capability is exclusively handled through the ownership of the `ProxyAdmin`. ([#4354](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4354))
-- Moved the logic to validate ERC-1822 during an upgrade from `ERC1967Utils` to `UUPSUpgradeable`. ([#4356](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4356))
-- `UUPSUpgradeable`, `TransparentUpgradeableProxy` and `ProxyAdmin`: Removed `upgradeTo` and `upgrade` functions, and made `upgradeToAndCall` and `upgradeAndCall` ignore the data argument if it is empty. It is no longer possible to invoke the receive function (or send value with empty data) along with an upgrade. ([#4382](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4382))
-- `BeaconProxy`: Reject value in initialization unless a payable function is explicitly invoked. ([#4382](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4382))
-- `Proxy`: Removed redundant `receive` function. ([#4434](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4434))
-- `BeaconProxy`: Use an immutable variable to store the address of the beacon. It is no longer possible for a `BeaconProxy` to upgrade by changing to another beacon. ([#4435](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4435))
-- `Initializable`: Use the namespaced storage pattern to avoid putting critical variables in slot 0. Allow reinitializer versions greater than 256. ([#4460](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4460))
-- `Initializable`: Use intermediate variables to improve readability. ([#4576](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4576))
-
-#### Token
-
-- `ERC20`, `ERC721`, `ERC1155`: Deleted `_beforeTokenTransfer` and `_afterTokenTransfer` hooks, added a new internal `_update` function for customizations, and refactored all extensions using those hooks to use `_update` instead. ([#3838](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3838), [#3876](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3876), [#4377](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4377))
-- `ERC20`: Removed `Approval` event previously emitted in `transferFrom` to indicate that part of the allowance was consumed. With this change, allowances are no longer reconstructible from events. See the code for guidelines on how to re-enable this event if needed. ([#4370](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4370))
-- `ERC20`: Removed the non-standard `increaseAllowance` and `decreaseAllowance` functions. ([#4585](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4585))
-- `ERC20Votes`: Changed internal vote accounting to reusable `Votes` module previously used by `ERC721Votes`. Removed implicit `ERC20Permit` inheritance. Note that the `DOMAIN_SEPARATOR` getter was previously guaranteed to be available for `ERC20Votes` contracts, but is no longer available unless `ERC20Permit` is explicitly used; ERC-5267 support is included in `ERC20Votes` with `EIP712` and is recommended as an alternative. ([#3816](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3816))
-- `SafeERC20`: Refactored `safeDecreaseAllowance` and `safeIncreaseAllowance` to support USDT-like tokens. ([#4260](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4260))
-- `SafeERC20`: Removed `safePermit` in favor of documentation-only `permit` recommendations. Based on recommendations from @trust1995 ([#4582](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4582))
-- `ERC721`: `_approve` no longer allows approving the owner of the tokenId. ([#4377](https://github.com/OpenZeppelin/openzeppelin-contracts/issues/4377)) `_setApprovalForAll` no longer allows setting address(0) as an operator. ([#4377](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4377))
-- `ERC721`: Renamed `_requireMinted` to `_requireOwned` and added a return value with the current owner. Implemented `ownerOf` in terms of `_requireOwned`. ([#4566](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4566))
-- `ERC721Consecutive`: Added a `_firstConsecutiveId` internal function that can be overridden to change the id of the first token minted through `_mintConsecutive`. ([#4097](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4097))
-- `ERC721URIStorage`: Allow setting the token URI prior to minting. ([#4559](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4559))
-- `ERC721URIStorage`, `ERC721Royalty`: Stop resetting token-specific URI and royalties when burning. ([#4561](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4561))
-- `ERC1155`: Optimized array allocation. ([#4196](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4196))
-- `ERC1155`: Removed check for address zero in `balanceOf`. ([#4263](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4263))
-- `ERC1155`: Optimized array accesses by skipping bounds checking when unnecessary. ([#4300](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4300))
-- `ERC1155`: Bubble errors triggered in the `onERC1155Received` and `onERC1155BatchReceived` hooks. ([#4314](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4314))
-- `ERC1155Supply`: Added a `totalSupply()` function that returns the total amount of token circulating, this change will restrict the total tokens minted across all ids to 2\*\*256-1 . ([#3962](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3962))
-- `ERC1155Receiver`: Removed in favor of `ERC1155Holder`. ([#4450](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4450))
-
-#### Utils
-
-- `Address`: Removed the ability to customize error messages. A common custom error is always used if the underlying revert reason cannot be bubbled up. ([#4502](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4502))
-- `Arrays`: Added `unsafeMemoryAccess` helpers to read from a memory array without checking the length. ([#4300](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4300))
-- `Arrays`: Optimized `findUpperBound` by removing redundant SLOAD. ([#4442](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4442))
-- `Checkpoints`: Library moved from `utils` to `utils/structs` ([#4275](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4275))
-- `DoubleEndedQueue`: Refactored internal structure to use `uint128` instead of `int128`. This has no effect on the library interface. ([#4150](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4150))
-- `ECDSA`: Use unchecked arithmetic for the `tryRecover` function that receives the `r` and `vs` short-signature fields separately. ([#4301](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4301))
-- `EIP712`: Added internal getters for the name and version strings ([#4303](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4303))
-- `Math`: Makes `ceilDiv` to revert on 0 division even if the numerator is 0 ([#4348](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4348))
-- `Math`: Optimized stack operations in `mulDiv`. ([#4494](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4494))
-- `Math`: Renamed members of `Rounding` enum, and added a new rounding mode for "away from zero". ([#4455](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4455))
-- `MerkleProof`: Use custom error to report invalid multiproof instead of reverting with overflow panic. ([#4564](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4564))
-- `MessageHashUtils`: Added a new library for creating message digest to be used along with signing or recovery such as ECDSA or ERC-1271. These functions are moved from the `ECDSA` library. ([#4430](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4430))
-- `Nonces`: Added a new contract to keep track of user nonces. Used for signatures in `ERC20Permit`, `ERC20Votes`, and `ERC721Votes`. ([#3816](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3816))
-- `ReentrancyGuard`, `Pausable`: Moved to `utils` directory. ([#4551](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4551))
-- `Strings`: Renamed `toString(int256)` to `toStringSigned(int256)`. ([#4330](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4330))
-- Optimized `Strings.equal` ([#4262](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4262))
-
-### How to migrate from 4.x
+### How to upgrade from 4.x
 
 #### ERC20, ERC721, and ERC1155
 
-These breaking changes will require modifications to ERC20, ERC721, and ERC1155 contracts, since the `_afterTokenTransfer` and `_beforeTokenTransfer` functions were removed. Thus, any customization made through those hooks should now be done overriding the new `_update` function instead.
+These breaking changes will require modifications to ERC20, ERC721, and ERC1155 contracts, since the `_afterTokenTransfer` and `_beforeTokenTransfer` functions were removed. Any customization made through those hooks should now be done overriding the new `_update` function instead.
 
 Minting and burning are implemented by `_update` and customizations should be done by overriding this function as well. `_transfer`, `_mint` and `_burn` are no longer virtual (meaning they are not overridable) to guard against possible inconsistencies.
 
 For example, a contract using `ERC20`'s `_beforeTokenTransfer` hook would have to be changed in the following way.
 
 ```diff
--function _beforeTokenTransfer(
-+function _update(
-   address from,
-   address to,
-   uint256 amount
- ) internal virtual override {
--  super._beforeTokenTransfer(from, to, amount);
-   require(!condition(), "ERC20: wrong condition");
-+  super._update(from, to, amount);
- }
+- function _beforeTokenTransfer(
++ function _update(
+      address from,
+      address to,
+      uint256 amount
+  ) internal virtual override {
+-     super._beforeTokenTransfer(from, to, amount);
+      require(!condition(), "ERC20: wrong condition");
++     super._update(from, to, amount);
+  }
 ```
 
-#### More about ERC721
+### More about ERC721
 
-In the case of `ERC721`, the `_update` function does not include a `from` parameter, as the sender is implicitly the previous owner of the `tokenId`. The address of this previous owner is returned by the `_update` function, so it can be used for a posteriori checks. In addition to `to` and `tokenId`, a third parameter (`auth`) is present in this function. This parameter enabled an optional check that the caller/spender is approved to do the transfer. This check cannot be performed after the transfer (because the transfer resets the approval), and doing it before `_update` would require a duplicate call to `_ownerOf`.
+In the case of `ERC721`, the `_update` function does not include a `from` parameter, as the sender is implicitly the previous owner of the `tokenId`. The address of
+this previous owner is returned by the `_update` function, so it can be used for a posteriori checks. In addition to `to` and `tokenId`, a third parameter (`auth`) is
+present in this function. This parameter enabled an optional check that the caller/spender is approved to do the transfer. This check cannot be performed after the transfer (because the transfer resets the approval), and doing it before `_update` would require a duplicate call to `_ownerOf`.
 
-In this logic of removing hidden SLOADs, the `_isApprovedOrOwner` function was removed in favor of a new `_isAuthorized` function. Overrides that used to target the `_isApprovedOrOwner` should now be performed on the `_isAuthorized` function. Calls to `_isApprovedOrOwner` that preceded a call to `_transfer`, `_burn` or `_approve` should be removed in favor of using the `auth` argument in `_update` and `_approve`. This is showcased in `ERC721Burnable.burn` and in `ERC721Wrapper.withdrawTo`.
+In this logic of removing hidden SLOADs, the `_isApprovedOrOwner` function was removed in favor of a new `_isAuthorized` function. Overrides that used to target the
+`_isApprovedOrOwner` should now be performed on the `_isAuthorized` function. Calls to `_isApprovedOrOwner` that preceded a call to `_transfer`, `_burn` or `_approve`
+should be removed in favor of using the `auth` argument in `_update` and `_approve`. This is showcased in `ERC721Burnable.burn` and in `ERC721Wrapper.withdrawTo`.
 
 The `_exists` function was removed. Calls to this function can be replaced by `_ownerOf(tokenId) != address(0)`.
 
-#### More about ERC1155
-
-Batch transfers will now emit `TransferSingle` if the batch consists of a single token, while in previous versions the `TransferBatch` event would be used for all transfers initiated through `safeBatchTransferFrom`. Both behaviors are compliant with the ERC-1155 specification.
-
 #### ERC165Storage
 
-Users that were registering EIP-165 interfaces with `_registerInterface` from `ERC165Storage` should instead do so by overriding the `supportsInterface` function as seen below:
+Users that were registering EIP-165 interfaces with `_registerInterface` from `ERC165Storage` should instead do so so by overriding the `supportsInterface` function as seen below:
 
 ```solidity
 function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
-  return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
+    return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 }
 ```
 
-#### SafeMath
-
-Methods in SafeMath superseded by native overflow checks in Solidity 0.8.0 were removed along with operations providing an interface for revert strings. The remaining methods were moved to `utils/Math.sol`.
-
-```diff
-- import "@openzeppelin/contracts/utils/math/SafeMath.sol";
-+ import "@openzeppelin/contracts/utils/math/Math.sol";
-
- function tryOperations(uint256 x, uint256 y) external view {
--  (bool overflowsAdd, uint256 resultAdd) = SafeMath.tryAdd(x, y);
-+  (bool overflowsAdd, uint256 resultAdd) = Math.tryAdd(x, y);
--  (bool overflowsSub, uint256 resultSub) = SafeMath.trySub(x, y);
-+  (bool overflowsSub, uint256 resultSub) = Math.trySub(x, y);
--  (bool overflowsMul, uint256 resultMul) = SafeMath.tryMul(x, y);
-+  (bool overflowsMul, uint256 resultMul) = Math.tryMul(x, y);
--  (bool overflowsDiv, uint256 resultDiv) = SafeMath.tryDiv(x, y);
-+  (bool overflowsDiv, uint256 resultDiv) = Math.tryDiv(x, y);
-   // ...
- }
-```
-
-#### Adapting Governor modules
-
-Custom Governor modules that override internal functions may require modifications if migrated to v5. In particular, the new internal functions `_queueOperations` and `_executeOperations` may need to be used. If assistance with this migration is needed reach out via the [OpenZeppelin Support Forum](https://forum.openzeppelin.com/c/support/contracts/18).
-
-#### ECDSA and MessageHashUtils
-
-The `ECDSA` library is now focused on signer recovery. Previously it also included utility methods for producing digests to be used with signing or recovery. These utilities have been moved to the `MessageHashUtils` library and should be imported if needed:
-
-```diff
- import {ECDSA} from "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
-+import {MessageHashUtils} from "@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol";
-
- contract Verifier {
-   using ECDSA for bytes32;
-+  using MessageHashUtils for bytes32;
-
-   function _verify(bytes32 data, bytes memory signature, address account) internal pure returns (bool) {
-     return data
-       .toEthSignedMessageHash()
-       .recover(signature) == account;
-   }
- }
-```
-
-#### Interfaces and libraries in upgradeable contracts
-
-The upgradeable version of the contracts library used to include a variant suffixed with `Upgradeable` for every contract. These variants, which are produced automatically, mainly include changes for dealing with storage that don't apply to libraries and interfaces.
-
-The upgradeable library no longer includes upgradeable variants for libraries and interfaces. Projects migrating to 5.0 should replace their library and interface imports with their corresponding non-upgradeable version:
-
-```diff
- // Libraries
--import {AddressUpgradeable} from '@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol';
-+import {Address} from '@openzeppelin/contracts/utils/Address.sol';
-
- // Interfaces
--import {IERC20Upgradeable} from '@openzeppelin/contracts-upgradeable/interfaces/IERC20.sol';
-+import {IERC20} from '@openzeppelin/contracts/interfaces/IERC20.sol';
-```
-
-#### Offchain Considerations
-
-Some changes may affect offchain systems if they rely on assumptions that are changed along with these new breaking changes. These cases are:
-
-##### Relying on revert strings for processing errors
-
-A concrete example is AccessControl, where it was previously advised to catch revert reasons using the following regex:
-
-```
-/^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
-```
-
-Instead, contracts now revert with custom errors. Systems that interact with smart contracts outside of the network should consider reliance on revert strings and possibly support the new custom errors.
-
-##### Relying on storage locations for retrieving data
-
-After 5.0, the storage location of some variables were changed. This is the case for `Initializable` and all the upgradeable contracts since they now use namespaced storaged locations. Any system relying on storage locations for retrieving data or detecting capabilities should be updated to support these new locations.
-
-## 4.9.6 (2024-02-29)
-
-- `Base64`: Fix issue where dirty memory located just after the input buffer is affecting the result. ([#4929](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4929))
-
-## 4.9.5 (2023-12-08)
-
-- `Multicall`: Make aware of non-canonical context (i.e. `msg.sender` is not `_msgSender()`), allowing compatibility with `ERC2771Context`. Patch duplicated `Address.functionDelegateCall` in v4.9.4 (removed).
-
-## 4.9.3 (2023-07-28)
-
-- `ERC2771Context`: Return the forwarder address whenever the `msg.data` of a call originating from a trusted forwarder is not long enough to contain the request signer address (i.e. `msg.data.length` is less than 20 bytes), as specified by ERC-2771. ([#4481](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4481))
-- `ERC2771Context`: Prevent revert in `_msgData()` when a call originating from a trusted forwarder is not long enough to contain the request signer address (i.e. `msg.data.length` is less than 20 bytes). Return the full calldata in that case. ([#4484](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4484))
-
 ## 4.9.2 (2023-06-16)
 
 - `MerkleProof`: Fix a bug in `processMultiProof` and `processMultiProofCalldata` that allows proving arbitrary leaves if the tree contains a node with value 0 at depth 1.
@@ -813,7 +446,7 @@ It is no longer possible to call an `initializer`-protected function from within
 This release includes two small breaking changes in `TimelockController`.
 
 1. The `onlyRole` modifier in this contract was designed to let anyone through if the role was granted to `address(0)`,
-   allowing the possibility to make a role "open", which can be used for `EXECUTOR_ROLE`. This modifier is now
+   allowing the possibility to to make a role "open", which can be used for `EXECUTOR_ROLE`. This modifier is now
    replaced by `AccessControl.onlyRole`, which does not have this ability. The previous behavior was moved to the
    modifier `TimelockController.onlyRoleOrOpenRole`.
 2. It was possible to make `PROPOSER_ROLE` an open role (as described in the previous item) if it was granted to

CODE_OF_CONDUCT.md

@@ -6,7 +6,7 @@ In the interest of fostering an open and welcoming environment, we as
 contributors and maintainers pledge to making participation in our project and
 our community a harassment-free experience for everyone, regardless of age, body
 size, disability, ethnicity, sex characteristics, gender identity and expression,
-level of experience, education, socioeconomic status, nationality, personal
+level of experience, education, socio-economic status, nationality, personal
 appearance, race, religion, or sexual identity and orientation.
 
 ## Our Standards

FUNDING.json

@@ -1,10 +0,0 @@
-{
-  "drips": {
-    "ethereum": {
-      "ownedBy": "0xAeb37910f93486C85A1F8F994b67E8187554d664"
-    }
-  },
-  "opRetro": {
-    "projectId": "0x939241afa4c4b9e1dda6b8250baa8f04fa8b0debce738cfd324c0b18f9926d25"
-  }
-}

GUIDELINES.md

@@ -55,7 +55,7 @@ External contributions must be reviewed separately by multiple maintainers.
 
 Automation should be used as much as possible to reduce the possibility of human error and forgetfulness.
 
-Automations that make use of sensitive credentials must use secure secret management, and must be strengthened against attacks such as [those on GitHub Actions workflows](https://github.com/nikitastupin/pwnhub).
+Automations that make use of sensitive credentials must use secure secret management, and must be strengthened against attacks such as [those on GitHub Actions worklows](https://github.com/nikitastupin/pwnhub).
 
 Some other examples of automation are:
 
@@ -95,18 +95,8 @@ In addition to the official Solidity Style Guide we have a number of other conve
   }
   ```
 
-* Functions should be declared virtual, with few exceptions listed below. The
-  contract logic should be written considering that these functions may be
-  overridden by developers, e.g. getting a value using an internal getter rather
-  than reading directly from a state variable.
-
-  If function A is an "alias" of function B, i.e. it invokes function B without
-  significant additional logic, then function A should not be virtual so that
-  any user overrides are implemented on B, preventing inconsistencies.
-
-* Events should generally be emitted immediately after the state change that they
-  represent, and should be named in the past tense. Some exceptions may be made for gas
-  efficiency if the result doesn't affect observable ordering of events.
+* Events should be emitted immediately after the state change that they
+  represent, and should be named in the past tense.
 
   ```solidity
   function _burn(address who, uint256 value) internal {
@@ -115,7 +105,7 @@ In addition to the official Solidity Style Guide we have a number of other conve
   }
   ```
 
-  Some standards (e.g. ERC-20) use present tense, and in those cases the
+  Some standards (e.g. ERC20) use present tense, and in those cases the
   standard specification is used.
   
 * Interface names should have a capital I prefix.
@@ -131,13 +121,6 @@ In addition to the official Solidity Style Guide we have a number of other conve
   abstract contract AccessControl is ..., {
   ```
 
-* Return values are generally not named, unless they are not immediately clear or there are multiple return values.
-
-  ```solidity
-  function expiration() public view returns (uint256) { // Good
-  function hasRole() public view returns (bool isMember, uint32 currentDelay) { // Good
-  ```
-
 * Unchecked arithmetic blocks should contain comments explaining why overflow is guaranteed not to happen. If the reason is immediately apparent from the line above the unchecked block, the comment may be omitted.
 
 * Custom errors should be declared following the [EIP-6093](https://eips.ethereum.org/EIPS/eip-6093) rationale whenever reasonable. Also, consider the following:

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2016-2025 Zeppelin Group Ltd
+Copyright (c) 2016-2023 zOS Global Limited and contributors
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the

README.md

@@ -1,10 +1,13 @@
+> **Warning**
+> Version 5.0 is under active development. The code in this branch is not recommended for use.
+
 # <img src="logo.svg" alt="OpenZeppelin" height="40px">
 
 [![NPM Package](https://img.shields.io/npm/v/@openzeppelin/contracts.svg)](https://www.npmjs.org/package/@openzeppelin/contracts)
 [![Coverage Status](https://codecov.io/gh/OpenZeppelin/openzeppelin-contracts/graph/badge.svg)](https://codecov.io/gh/OpenZeppelin/openzeppelin-contracts)
 [![GitPOAPs](https://public-api.gitpoap.io/v1/repo/OpenZeppelin/openzeppelin-contracts/badge)](https://www.gitpoap.io/gh/OpenZeppelin/openzeppelin-contracts)
 [![Docs](https://img.shields.io/badge/docs-%F0%9F%93%84-yellow)](https://docs.openzeppelin.com/contracts)
-[![Forum](https://img.shields.io/badge/forum-%F0%9F%92%AC-yellow)](https://forum.openzeppelin.com/)
+[![Forum](https://img.shields.io/badge/forum-%F0%9F%92%AC-yellow)](https://docs.openzeppelin.com/contracts)
 
 **A library for secure smart contract development.** Build on a solid foundation of community-vetted code.
 
@@ -14,41 +17,38 @@
 
 :mage: **Not sure how to get started?** Check out [Contracts Wizard](https://wizard.openzeppelin.com/) — an interactive smart contract generator.
 
-:building_construction: **Want to scale your decentralized application?** Check out [OpenZeppelin Defender](https://openzeppelin.com/defender) — a mission-critical developer security platform to code, audit, deploy, monitor, and operate with confidence.
-
-> [!IMPORTANT]
-> OpenZeppelin Contracts uses semantic versioning to communicate backwards compatibility of its API and storage layout. For upgradeable contracts, the storage layout of different major versions should be assumed incompatible, for example, it is unsafe to upgrade from 4.9.3 to 5.0.0. Learn more at [Backwards Compatibility](https://docs.openzeppelin.com/contracts/backwards-compatibility).
+:building_construction: **Want to scale your decentralized application?** Check out [OpenZeppelin Defender](https://openzeppelin.com/defender) — a secure platform for automating and monitoring your operations.
 
 ## Overview
 
 ### Installation
 
-#### Hardhat (npm)
+#### Hardhat, Truffle (npm)
 
 ```
 $ npm install @openzeppelin/contracts
 ```
 
+OpenZeppelin Contracts features a [stable API](https://docs.openzeppelin.com/contracts/releases-stability#api-stability), which means that your contracts won't break unexpectedly when upgrading to a newer minor version.
+
 #### Foundry (git)
 
-> [!WARNING]
-> When installing via git, it is a common error to use the `master` branch. This is a development branch that should be avoided in favor of tagged releases. The release process involves security measures that the `master` branch does not guarantee.
+> **Warning** When installing via git, it is a common error to use the `master` branch. This is a development branch that should be avoided in favor of tagged releases. The release process involves security measures that the `master` branch does not guarantee.
 
-> [!WARNING]
-> Foundry installs the latest version initially, but subsequent `forge update` commands will use the `master` branch.
+> **Warning** Foundry installs the latest version initially, but subsequent `forge update` commands will use the `master` branch.
 
 ```
 $ forge install OpenZeppelin/openzeppelin-contracts
 ```
 
-Add `@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/` in `remappings.txt.`
+Add `@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/` in `remappings.txt.` 
 
 ### Usage
 
 Once installed, you can use the contracts in the library by importing them:
 
 ```solidity
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.19;
 
 import {ERC721} from "@openzeppelin/contracts/token/ERC721/ERC721.sol";
 
@@ -70,9 +70,9 @@ The guides in the [documentation site](https://docs.openzeppelin.com/contracts)
 * [Tokens](https://docs.openzeppelin.com/contracts/tokens): create tradeable assets or collectives, and distribute them via [Crowdsales](https://docs.openzeppelin.com/contracts/crowdsales).
 * [Utilities](https://docs.openzeppelin.com/contracts/utilities): generic useful tools including non-overflowing math, signature verification, and trustless paying systems.
 
-The [full API](https://docs.openzeppelin.com/contracts/api/token/ERC20) is also thoroughly documented, and serves as a great reference when developing your smart contract application. You can also ask for help or follow Contracts' development in the [community forum](https://forum.openzeppelin.com).
+The [full API](https://docs.openzeppelin.com/contracts/api/token/ERC20) is also thoroughly documented, and serves as a great reference when developing your smart contract application. You can also ask for help or follow Contracts's development in the [community forum](https://forum.openzeppelin.com).
 
-Finally, you may want to take a look at the [guides on our blog](https://blog.openzeppelin.com/), which cover several common use cases and good practices. The following articles provide great background reading, though please note that some of the referenced tools have changed, as the tooling in the ecosystem continues to rapidly evolve.
+Finally, you may want to take a look at the [guides on our blog](https://blog.openzeppelin.com/guides), which cover several common use cases and good practices. The following articles provide great background reading, though please note that some of the referenced tools have changed, as the tooling in the ecosystem continues to rapidly evolve.
 
 * [The Hitchhiker’s Guide to Smart Contracts in Ethereum](https://blog.openzeppelin.com/the-hitchhikers-guide-to-smart-contracts-in-ethereum-848f08001f05) will help you get an overview of the various tools available for smart contract development, and help you set up your environment.
 * [A Gentle Introduction to Ethereum Programming, Part 1](https://blog.openzeppelin.com/a-gentle-introduction-to-ethereum-programming-part-1-783cc7796094) provides very useful information on an introductory level, including many basic concepts from the Ethereum platform.