As per @abcoathup ’s suggestion to use OpenZeppelin ERC20 implementation, am creating a very simple upgradable ERC20 token as below: // contracts/MyToken.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; import "@openzeppelin/contracts-ethereum-package/contracts/token/ERC20/ERC20.sol"; i…

Hi @megatower66 , Sorry for the delay in responding. I am still catching up after having a public holiday. When using AccessControl which contains a struct we need to use unsafeAllowCustomTypes: true in the migrations script as the Upgrades Plugins doesn’t currently support checking structs. There…

Thanks @abcoathup . However, by using unsafeAllowCustomTypes: true in this particular context, can we still upgrade the token? By adding say more variables (by not changing the order of previously defined ones), and adding more functions in future? Or that wouldn’t be possible if one is inheriting A…

Hi @megatower66 , More functionality can be added in future upgrades. We just need to ensure that we don’t change the storage layout, so as you said, only add state variables and don’t change the order or type of existing ones. The Upgrade Safe fork of OpenZeppelin Contracts will be upgrade safe, …

Hi @megatower66 , We have found an error in Upgrades Plugins for Truffle and Hardhat. Users of the flag unsafeAllowCustomTypes should update their dependencies to the latest version. See post for more details: Problem in Upgrades Plugins for users of unsafeAllowCustomTypes .

Using AccessControl with ERC20 token (UpgradeSafe) throwing "Defining structs like `RoleData` is not yet supported"

Support Upgrades

frangio January 27, 2021, 6:49pm 6

@megatower66 The flag is no longer necessary in the latest release of the Upgrades Plugins, and your structs will be automatically checked to be safe. Take a look at the announcement below for more details!

Topic		Replies	Views
Upgradeable ERC20 token Upgrades	4	3057	November 6, 2020
Defining structs like `RoleData` is not yet supported Upgrades	2	1356	January 27, 2021
Upgradeable roles? Upgrades	2	801	April 22, 2021
Defining structs like 'Snapshots' is not yet supported when deploying ERC20SnapshotUpgradeable Upgrades	7	2524	January 27, 2021
ERC20 generated by wizard with Burnable, Permit, Votes, Ownable and UUPS does not seem deployable Contracts	3	165	June 19, 2024

Using AccessControl with ERC20 token (UpgradeSafe) throwing "Defining structs like `RoleData` is not yet supported"

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