Event name conflicts and data out-of-bounds error in Remix

Support Contracts
1

I have been getting a weird errored: Error: data out-of-bounds (length=0, offset=32, code=BUFFER_OVERRUN, version=abi/5.1.2) error when testing contract functions in Remix, even though it goes through without revert. After debugging and stripping most of the logic, I found a minimal example to reproduce this problem:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts@4.1.0/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts@4.1.0/token/ERC20/ERC20.sol";

contract Test is ERC721 {
    constructor() ERC721("TEST", "TEST") { }
    
    function test() public {
        emit Transfer(address(0), address(0), 100);
    }
}

The test() call would produce an error

transact to Test.test pending ...
transact to Test.test errored: Error: data out-of-bounds (length=0, offset=32, code=BUFFER_OVERRUN, version=abi/5.1.2)

Looking closer, I can see that both OpenZeppelin’s ERC20 and ERC721 contracts provide a Transfer Event. To verify this assumption, I commented out //import "@openzeppelin/contracts@4.1.0/token/ERC20/ERC20.sol"; and the event emit works as expected. Because my contract uses ERC20 to instantiate an instance of a token so I need to import the definitions, but I am confused if this is a bug in Remix or by design a Solidity contract should not import two files with the same Event names? Is there any way to organize imports to get rid of this problem?

2

This is a bug in Remix. Can you report it to https://github.com/ethereum/remix-project?

3

Thank you. Good to know. I have reported it there.