solidity/test/libsolidity/lsp/publish_diagnostics_2.sol

// SPDX-License-Identifier: UNLICENSED
pragma solidity >=0.8.0;

contract C
{
    function makeSomeError() public pure returns (uint res)
    {
        uint x = "hi";
        return;
        res = 2;
    }
}

contract D
{
    function main() public payable returns (uint)
    {
        C c = new C();
        return c.makeSomeError(2, 3);
    }
}