[Bug-Candidate]: Source mapping content corrupted if the contract contains special characters

[0xtotem]

Describe the issue:

If the contract contains special characters, for example french accents, the .source_mapping.content object is returning the expected output, it looks like it's crops by the number of special characters before the source.

Code example to reproduce the issue:

Coin.sol:

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.4;

contract Coin {
    address public minter;
    mapping (address => uint) public balances;

    event Sent(address from, address to, uint amount);

    // ààà
    constructor() {
        minter = msg.sender;
    }

    // ééé
    function mint(address receiver, uint amount) public {
        require(msg.sender == minter);
        balances[receiver] += amount;
    }
}

If you run:

from slither.slither import Slither  
  
slither = Slither('ok.sol')  

for contract in slither.contracts:
  for f in contract.functions:
    print(f.source_mapping.content)
    print("---")

You get:

structor() {
        minter = msg.sender;
    }

 
---
on mint(address receiver, uint amount) public {
        require(msg.sender == minter);
        balances[receiver] += amount;
    }
}
---

Version:

0.10.4

Relevant log output:

No response

[smonicas]

Hi, we get the source mapping directly from the solc output. It's a known issue in the solidity compiler ethereum/solidity#14733