Magic Number

Provide a contract that returns the magic number 42 from its `whatIsTheMeaningOfLife()` function using minimal runtime bytecode.

Vulnerable Code

Analyze the Solidity code below to find the vulnerability.

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

interface ISolver {
  function whatIsTheMeaningOfLife() external view returns (uint256);
}

contract MagicNum { // Ethernaut main contract
  address public solver; // Address of the user's solver contract

  constructor() {}

  function setSolver(address _solver) public {
    solver = _solver;
  }

  // The user needs to provide a contract address for 'solver'
  // such that calling whatIsTheMeaningOfLife() on it returns 42.
  // Minimal bytecode is the challenge.
}

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Explanation

Discomfort = Learning

Magic Number

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