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pragma solidity >= 0.8.7;

// HiddenCalldataProxy reads the version that identifies the implementation contract from 4 bytes at the
// end of the calldata
contract HiddenCalldataProxy {
    mapping (uint32 => address) public implementationForVersion;
    
    constructor() {
        // set up a couple of dummy test target contracts that have a function that acts slightly differently
        // depending on its constructor param

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import "./ERC20.sol";

interface ApproveAndCallReceiver {
    function receiveApproval(address _from, uint256 _amount, address _token, bytes memory _data) public;
}

contract BurnAndPropose is ApproveAndCallReceiver {
    ERC20 constant public ANT = ERC20(0x960b236A07cf122663c4303350609A66A7B288C0);
    address public voting;
    uint256 public burn;

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pragma solidity 0.4.18;

import "./Vault.sol";


contract Actor is Vault {
    bytes32 constant public PERFORM_ACTION_ROLE = keccak256("PERFORM_ACTION_ROLE");
    bytes32 constant public RETURN_TO_PARENT_ROLE = keccak256("RETURN_TO_PARENT_ROLE");

    bytes4 constant internal ERC20_TRANSFER_SIG = 0xa9059cbb; // bytes4(keccak256("transfer(address,uint256)"))

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contract AccountProxy {
    event Fwded(address indexed to, uint256 value, bytes calldata, bool succeeded);
    
    // must be implemented by super contract
    function canFwd(address who, address to, uint256 value, bytes calldata) public view returns (bool);    
    
    function () payable {} // allow to deposit eth
    
    function fwd(address to, uint256 value, bytes calldata) external {
        require(canFwd(msg.sender, to, value, calldata));

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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

d5a097877b835c71581d1af86b333ffc5a207923bc2047c417e7af0c3d89dea5
-----BEGIN PGP SIGNATURE-----

wsFcBAEBCAAQBQJZ8KPVCRCeAcUjFK2zTAAAChwQAKqPRl++r3Dy9bFB8CeKD3Cz
cuLnWzSmKyHbqfV4zHdRGk2n76iuuOy/ZSciGOqtgLCOctfIRwlSLR/WKR3sp50k
SDQrij20326nwQsVp/FwcQharp6fBSBu8j4iKWGMkQuYRu8Q2qVEFL5zYKT1OIZ+
yaErpK1ozAVbcyR2Ou1ltWLDwWy9d0crlfXI2ZgvmjBKa0//Kg8CdE4uJAMajT8e

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// Bytecode origin https://www.reddit.com/r/ethereum/comments/6ic49q/any_assembly_programmers_willing_to_write_a/dj5ceuw/
// Modified version of Vitalik's https://www.reddit.com/r/ethereum/comments/6c1jui/delegatecall_forwarders_how_to_save_5098_on/
// Credits to Jordi Baylina for this way of deploying contracts https://gist.github.com/jbaylina/e8ac19b8e7478fd10cf0363ad1a5a4b3

// Forwarder is slightly modified to only return 256 bytes (8 normal returns)

// Deployed Factory in Kovan: https://kovan.etherscan.io/address/0xaebc118657099e2110c90494f48b3d21329b23eb

// Example of a Forwarder deploy using the Factory: https://kovan.etherscan.io/tx/0xe995dd023c8336685cb819313d933ae8938009f9c8c0e1af6c57b8be06986957
// Just 66349 gas per contract

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Senior Solidity/EVM/Ethereum opening at Aragon

We are looking for an Ethereum wizard to work with us on Aragon Core and the future Aragon Network.

Conditions:

• Fulltime commitment. Side projects and open source are accepted (and encouraged).
• Completely remote position, no relocation required.
• Very competitive and negotiable compensation.
• You decide how to allocate your salary in USD, ETH or ANT. Rates will be revisited every 6 months.

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it('fixes', () => {
  return BrokenContract.new()
    .then(c => {
      contract = c
      return contract.broken()
    })
    .then(broken => {
      assert.equal(broken, true)
      return contract.executeCode(Fixer.binary)
    })

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contract Fixer is BrokenContract {
  function execute(address fixer) {
    broken = false;
  }
}

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contract BrokenContract is Fixeable {
  function BrokenContract() {
    broken = true;
    creator = msg.sender;
  }

  function canExecuteArbitraryCode() returns (bool) {
    return broken && msg.sender == creator;
  }