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Add a _spendAllowance function to ERC20 & ERC777 #3170

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merged 7 commits into from
Feb 9, 2022
Merged

Add a _spendAllowance function to ERC20 & ERC777 #3170

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3df8fc3
add support for unlimited allowance to ERC20Burnable
Amxx Feb 7, 2022
17c4a20
add changelog entry
Amxx Feb 7, 2022
7efab4b
_spendAllowance
Amxx Feb 7, 2022
6ebdea0
Merge remote-tracking branch 'upstream/master' into feature/ERC20/unl…
Amxx Feb 8, 2022
d1b773c
Add _spendeAllowance to ERC777 and fix some names
Amxx Feb 8, 2022
48f0823
update changelog
Amxx Feb 8, 2022
c416a78
revert changes to ERC777 naming
Amxx Feb 9, 2022
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update changelog
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@Amxx
Amxx committed Feb 8, 2022
commit 48f0823684bf2cf056a67c7a9375fcbda366586b
2 changes: 2 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -19,8 +19,10 @@
* `Base64`: add a library to parse bytes into base64 strings using `encode(bytes memory)` function, and provide examples to show how to use to build URL-safe `tokenURIs`. ([#2884](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/2884))
* `ERC20`: reduce allowance before triggering transfer. ([#3056](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3056))
* `ERC20`: do not update allowance on `transferFrom` when allowance is `type(uint256).max`. ([#3085](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3085))
* `ERC20`: add a `_spendAllowance` internal function. ([#3170](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3170))
* `ERC20Burnable`: do not update allowance on `burnFrom` when allowance is `type(uint256).max`. ([#3170](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3170))
* `ERC777`: do not update allowance on `transferFrom` when allowance is `type(uint256).max`. ([#3085](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3085))
* `ERC777`: add a `_spendAllowance` internal function. ([#3170](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3170))
* `SignedMath`: a new signed version of the Math library with `max`, `min`, and `average`. ([#2686](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/2686))
* `SignedMath`: add a `abs(int256)` method that returns the unsigned absolute value of a signed value. ([#2984](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/2984))
* `ERC1967Upgrade`: Refactor the secure upgrade to use `ERC1822` instead of the previous rollback mechanism. This reduces code complexity and attack surface with similar security guarantees. ([#3021](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3021))
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