false
false
0

Contract Address Details

0x7EC2F14ABE8b0Ea2F657bBb62b6fEfDe161c9001

Contract Name
TransparentUpgradeableProxy
Creator
0x8cba04–da4ab2 at 0xa15422–cf9df9
Implementation
0xc32a6d338f78d45787c6297faa19d290c27fbac7
Balance
0 NUM ( )
Tokens
Fetching tokens...
Transactions
297,133 Transactions
Transfers
0 Transfers
Gas Used
29,892,369,076
Last Balance Update
385682
Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
Contract name:
TransparentUpgradeableProxy




Optimization enabled
true
Compiler version
v0.8.9+commit.e5eed63a




Optimization runs
200
EVM Version
default




Verified at
2024-03-22T03:28:38.883891Z

Constructor Arguments

000000000000000000000000c32a6d338f78d45787c6297faa19d290c27fbac7000000000000000000000000dba677ff1fbe550b3709797f1c45578344285f18000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000048129fc1c00000000000000000000000000000000000000000000000000000000

Arg [0] (address) : 0xc32a6d338f78d45787c6297faa19d290c27fbac7
Arg [1] (address) : 0xdba677ff1fbe550b3709797f1c45578344285f18
Arg [2] (bytes) : 8129fc1c

              

@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol

Sol2uml
new
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC1967/ERC1967Proxy.sol";

/**
 * @dev This contract implements a proxy that is upgradeable by an admin.
 *
 * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
 * clashing], which can potentially be used in an attack, this contract uses the
 * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
 * things that go hand in hand:
 *
 * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
 * that call matches one of the admin functions exposed by the proxy itself.
 * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
 * implementation. If the admin tries to call a function on the implementation it will fail with an error that says
 * "admin cannot fallback to proxy target".
 *
 * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
 * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
 * to sudden errors when trying to call a function from the proxy implementation.
 *
 * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
 * you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.
 */
contract TransparentUpgradeableProxy is ERC1967Proxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {ERC1967Proxy-constructor}.
     */
    constructor(address _logic, address admin_, bytes memory _data) payable ERC1967Proxy(_logic, _data) {
        assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
        _changeAdmin(admin_);
    }

    /**
     * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
     */
    modifier ifAdmin() {
        if (msg.sender == _getAdmin()) {
            _;
        } else {
            _fallback();
        }
    }

    /**
     * @dev Returns the current admin.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
     */
    function admin() external ifAdmin returns (address admin_) {
        admin_ = _getAdmin();
    }

    /**
     * @dev Returns the current implementation.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
     */
    function implementation() external ifAdmin returns (address implementation_) {
        implementation_ = _implementation();
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
     */
    function changeAdmin(address newAdmin) external virtual ifAdmin {
        _changeAdmin(newAdmin);
    }

    /**
     * @dev Upgrade the implementation of the proxy.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
     */
    function upgradeTo(address newImplementation) external ifAdmin {
        _upgradeToAndCall(newImplementation, bytes(""), false);
    }

    /**
     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
     * proxied contract.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
     */
    function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {
        _upgradeToAndCall(newImplementation, data, true);
    }

    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view virtual returns (address) {
        return _getAdmin();
    }

    /**
     * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
     */
    function _beforeFallback() internal virtual override {
        require(msg.sender != _getAdmin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
        super._beforeFallback();
    }
}
        

contracts/import.sol

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

import "@openzeppelin/contracts/proxy/beacon/BeaconProxy.sol";
import "@openzeppelin/contracts/proxy/beacon/UpgradeableBeacon.sol";
import "@openzeppelin/contracts/proxy/ERC1967/ERC1967Proxy.sol";
import "@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol";
import "@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol";

// Kept for backwards compatibility with older versions of Hardhat and Truffle plugins.
contract AdminUpgradeabilityProxy is TransparentUpgradeableProxy {
    constructor(address logic, address admin, bytes memory data) payable TransparentUpgradeableProxy(logic, admin, data) {}
}
          

@openzeppelin/contracts-upgradeable/proxy/ERC1967/ERC1967UpgradeUpgradeable.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.2;

import "../beacon/IBeaconUpgradeable.sol";
import "../../utils/AddressUpgradeable.sol";
import "../../utils/StorageSlotUpgradeable.sol";
import "../utils/Initializable.sol";

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
abstract contract ERC1967UpgradeUpgradeable is Initializable {
    function __ERC1967Upgrade_init() internal initializer {
        __ERC1967Upgrade_init_unchained();
    }

    function __ERC1967Upgrade_init_unchained() internal initializer {
    }
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(AddressUpgradeable.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
        if (data.length > 0 || forceCall) {
            _functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallSecure(address newImplementation, bytes memory data, bool forceCall) internal {
        address oldImplementation = _getImplementation();

        // Initial upgrade and setup call
        _setImplementation(newImplementation);
        if (data.length > 0 || forceCall) {
            _functionDelegateCall(newImplementation, data);
        }

        // Perform rollback test if not already in progress
        StorageSlotUpgradeable.BooleanSlot storage rollbackTesting = StorageSlotUpgradeable.getBooleanSlot(_ROLLBACK_SLOT);
        if (!rollbackTesting.value) {
            // Trigger rollback using upgradeTo from the new implementation
            rollbackTesting.value = true;
            _functionDelegateCall(
                newImplementation,
                abi.encodeWithSignature(
                    "upgradeTo(address)",
                    oldImplementation
                )
            );
            rollbackTesting.value = false;
            // Check rollback was effective
            require(oldImplementation == _getImplementation(), "ERC1967Upgrade: upgrade breaks further upgrades");
            // Finally reset to the new implementation and log the upgrade
            _setImplementation(newImplementation);
            emit Upgraded(newImplementation);
        }
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            _functionDelegateCall(IBeaconUpgradeable(newBeacon).implementation(), data);
        }
    }

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

    /**
     * @dev Emitted when the beacon is upgraded.
     */
    event BeaconUpgraded(address indexed beacon);

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(
            AddressUpgradeable.isContract(newBeacon),
            "ERC1967: new beacon is not a contract"
        );
        require(
            AddressUpgradeable.isContract(IBeaconUpgradeable(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }

    /*
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function _functionDelegateCall(address target, bytes memory data) private returns (bytes memory) {
        require(AddressUpgradeable.isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, "Address: low-level delegate call failed");
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
    uint256[50] private __gap;
}
          

@openzeppelin/contracts/proxy/beacon/UpgradeableBeacon.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IBeacon.sol";
import "../../access/Ownable.sol";
import "../../utils/Address.sol";

/**
 * @dev This contract is used in conjunction with one or more instances of {BeaconProxy} to determine their
 * implementation contract, which is where they will delegate all function calls.
 *
 * An owner is able to change the implementation the beacon points to, thus upgrading the proxies that use this beacon.
 */
contract UpgradeableBeacon is IBeacon, Ownable {
    address private _implementation;

    /**
     * @dev Emitted when the implementation returned by the beacon is changed.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Sets the address of the initial implementation, and the deployer account as the owner who can upgrade the
     * beacon.
     */
    constructor(address implementation_) {
        _setImplementation(implementation_);
    }

    /**
     * @dev Returns the current implementation address.
     */
    function implementation() public view virtual override returns (address) {
        return _implementation;
    }

    /**
     * @dev Upgrades the beacon to a new implementation.
     *
     * Emits an {Upgraded} event.
     *
     * Requirements:
     *
     * - msg.sender must be the owner of the contract.
     * - `newImplementation` must be a contract.
     */
    function upgradeTo(address newImplementation) public virtual onlyOwner {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Sets the implementation contract address for this beacon
     *
     * Requirements:
     *
     * - `newImplementation` must be a contract.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "UpgradeableBeacon: implementation is not a contract");
        _implementation = newImplementation;
    }
}
          

@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC1967/ERC1967UpgradeUpgradeable.sol";
import "./Initializable.sol";

/**
 * @dev Base contract for building openzeppelin-upgrades compatible implementations for the {ERC1967Proxy}. It includes
 * publicly available upgrade functions that are called by the plugin and by the secure upgrade mechanism to verify
 * continuation of the upgradability.
 *
 * The {_authorizeUpgrade} function MUST be overridden to include access restriction to the upgrade mechanism.
 *
 * _Available since v4.1._
 */
abstract contract UUPSUpgradeable is Initializable, ERC1967UpgradeUpgradeable {
    function __UUPSUpgradeable_init() internal initializer {
        __ERC1967Upgrade_init_unchained();
        __UUPSUpgradeable_init_unchained();
    }

    function __UUPSUpgradeable_init_unchained() internal initializer {
    }
    function upgradeTo(address newImplementation) external virtual {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallSecure(newImplementation, bytes(""), false);
    }

    function upgradeToAndCall(address newImplementation, bytes memory data) external payable virtual {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallSecure(newImplementation, data, true);
    }

    function _authorizeUpgrade(address newImplementation) internal virtual;
    uint256[50] private __gap;
}
          

@openzeppelin/contracts/utils/Context.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}
          

contracts/test/ignore-errors/UnsafeContractWithLibraryUsingFor.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./RiskyLibrary.sol";

contract UnsafeContractWithLibraryUsingFor {
    using RiskyLibrary for address;

    function unsafe(address target, bytes memory data) public {
        target.internalDelegateCall(data);
    }
}
          

@openzeppelin/contracts/proxy/Proxy.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }

    /**
     * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback () external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive () external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overriden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {
    }
}
          

contracts/test/ignore-errors/SafeContractWithLibraryImport.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./RiskyLibrary.sol";

contract SafeContractWithLibraryImport {

}
          

contracts/test/ignore-errors/UnsafeContractWithTransitiveLibraryCall.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./TransitiveRiskyLibrary.sol";

contract UnsafeContractWithTransitiveLibraryCall {
    function unsafe(address target, bytes memory data) public {
        TransitiveRiskyLibrary.internalDelegateCall(target, data);
    }
}
          

@openzeppelin/contracts/proxy/ERC1967/ERC1967Proxy.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../Proxy.sol";
import "./ERC1967Upgrade.sol";

/**
 * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
 * implementation address that can be changed. This address is stored in storage in the location specified by
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
 * implementation behind the proxy.
 */
contract ERC1967Proxy is Proxy, ERC1967Upgrade {
    /**
     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
     *
     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
     * function call, and allows initializating the storage of the proxy like a Solidity constructor.
     */
    constructor(address _logic, bytes memory _data) payable {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        _upgradeToAndCall(_logic, _data, false);
    }

    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal view virtual override returns (address impl) {
        return ERC1967Upgrade._getImplementation();
    }
}
          

@openzeppelin/contracts/proxy/beacon/BeaconProxy.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IBeacon.sol";
import "../Proxy.sol";
import "../ERC1967/ERC1967Upgrade.sol";

/**
 * @dev This contract implements a proxy that gets the implementation address for each call from a {UpgradeableBeacon}.
 *
 * The beacon address is stored in storage slot `uint256(keccak256('eip1967.proxy.beacon')) - 1`, so that it doesn't
 * conflict with the storage layout of the implementation behind the proxy.
 *
 * _Available since v3.4._
 */
contract BeaconProxy is Proxy, ERC1967Upgrade {
    /**
     * @dev Initializes the proxy with `beacon`.
     *
     * If `data` is nonempty, it's used as data in a delegate call to the implementation returned by the beacon. This
     * will typically be an encoded function call, and allows initializating the storage of the proxy like a Solidity
     * constructor.
     *
     * Requirements:
     *
     * - `beacon` must be a contract with the interface {IBeacon}.
     */
    constructor(address beacon, bytes memory data) payable {
        assert(_BEACON_SLOT == bytes32(uint256(keccak256("eip1967.proxy.beacon")) - 1));
        _upgradeBeaconToAndCall(beacon, data, false);
    }

    /**
     * @dev Returns the current beacon address.
     */
    function _beacon() internal view virtual returns (address) {
        return _getBeacon();
    }

    /**
     * @dev Returns the current implementation address of the associated beacon.
     */
    function _implementation() internal view virtual override returns (address) {
        return IBeacon(_getBeacon()).implementation();
    }

    /**
     * @dev Changes the proxy to use a new beacon. Deprecated: see {_upgradeBeaconToAndCall}.
     *
     * If `data` is nonempty, it's used as data in a delegate call to the implementation returned by the beacon.
     *
     * Requirements:
     *
     * - `beacon` must be a contract.
     * - The implementation returned by `beacon` must be a contract.
     */
    function _setBeacon(address beacon, bytes memory data) internal virtual {
        _upgradeBeaconToAndCall(beacon, data, false);
    }
}
          

@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}
          

contracts/test/ignore-errors/UnsafeParentContract.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

contract UnsafeParentContract {
    function isContract(address account) internal view returns (bool) {
        return account.code.length > 0;
    }

    function internalDelegateCall(
        address target,
        bytes memory data
    ) internal returns (bytes memory) {
        (, bytes memory returndata) = target.delegatecall(data);
        return returndata;
    }

    function privateDelegateCall(
        address target,
        bytes memory data
    ) private returns (bytes memory) {
        (, bytes memory returndata) = target.delegatecall(data);
        return returndata;
    }

    // unsafe!
    function publicDelegateCall(
        address target,
        bytes memory data
    ) public returns (bytes memory) {
        (, bytes memory returndata) = target.delegatecall(data);
        return returndata;
    }

    // unsafe!
    function externalDelegateCall(
        address target,
        bytes memory data
    ) external returns (bytes memory) {
        (, bytes memory returndata) = target.delegatecall(data);
        return returndata;
    }
}
          

contracts/test/StorageRenamedRetyped.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

contract StorageRenamedRetyped {
    /// @custom:oz-renamed-from b
    uint a;

    /// @custom:oz-retyped-from bool
    uint8 b;

    /// @custom:oz-renamed-from b
    /// @custom:oz-retyped-from bool
    uint8 c;

    /// @custom:oz-retyped-from bool
    /// @custom:oz-renamed-from b
    uint8 d;
}
          

contracts/test/ignore-errors/UnsafeContractWithFreeFunctionCall.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./RiskyFreeFunctions.sol" as RiskyFreeFunctions;

contract UnsafeContractWithFreeFunctionCall {
    function unsafe(address target, bytes memory data) public {
        RiskyFreeFunctions.freeDelegateCall(target, data);
    }
}
          

contracts/test/ignore-errors/TransitiveAllowReachable.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./RiskyLibrary.sol";

/**
 * allow delegatecalls on all of this contract's functions and reachable code
 *
 * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
 */
contract TransitiveAllowReachable {
      function internalDelegateCall(
        bytes memory data
    ) external returns (bytes memory) {
        return RiskyLibrary.internalDelegateCall(address(this), data);
    }
}
          

contracts/test/RenamedRetyped.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;

contract RenameV1 {
    uint x;
}

contract RenameV2 {
    /// @custom:oz-renamed-from x
    uint y;
}

contract RetypeV1 {
    bool x;
}

contract RetypeV2 {
    /// @dev a retyped variable
    /// @custom:oz-retyped-from bool
    uint8 x;
}

contract WronglyReportedRetypeV3 {
    /// @custom:oz-retyped-from address
    uint8 x;
}

contract MissmatchingTypeRetypeV4 {
    /// @custom:oz-retyped-from bool
    bytes32 x;
}

contract ConfusingRetypeV1 {
    address y;
    bool x;
}

contract ConfusingRetypeV2 {
    address y;
    /// @custom:oz-retyped-from address
    uint8 x;
}

contract NonHardcodedRetypeV1 {
    address a;
}

contract NonHardcodedRetypeV2 {
    /// @custom:oz-retyped-from address
    bytes20 a;
}

contract LayoutChangeV1 {
    bool a;
    bool b;
}

contract LayoutChangeV2 {
    /// @custom:oz-retyped-from bool
    uint16 a;

    /// @custom:oz-retyped-from bool
    uint8 b;
}
          

@openzeppelin/contracts-upgradeable/proxy/beacon/IBeaconUpgradeable.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeaconUpgradeable {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}
          

contracts/test/ignore-errors/AllowChildInheritedTransitive.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./TransitiveAllowReachable.sol";

contract AllowChildInheritedTransitive is TransitiveAllowReachable {
}
          

contracts/test/ignore-errors/AllowParent.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

/**
 * allow causes the delegatecall to be ignored for all functions in this contract
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
contract AllowParent {
    function internalDelegateCall(
        bytes memory data
    ) internal returns (bytes memory) {
        (, bytes memory returndata) = address(this).delegatecall(data);
        return returndata;
    }
}
          

contracts/test/ignore-errors/SafeContractWithParentCall.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./RiskyParentContract.sol";

contract SafeContractWithParentCall is RiskyParentContract {
    function safe() public view returns (bool) {
        return isContract(address(this));
    }
}
          

@openzeppelin/contracts-upgradeable/utils/StorageSlotUpgradeable.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlotUpgradeable {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        assembly {
            r.slot := slot
        }
    }
}
          

contracts/test/ignore-errors/UnsafeAllowParent.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./TransitiveUnsafeParent.sol";

/**
 * allow has no effect because the delegatecall is in a parent function
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
contract UnsafeAllowParent is TransitiveUnsafeParent {
}
          

contracts/test/ignore-errors/AllowReachableParent.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./TransitiveUnsafeParent.sol";

/**
 * allow-reachable causes the delegatecall in a parent function to be ignored
 *
 * this is actually unsafe but only allowed here for testing purposes!
 *
 * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
 */
contract AllowReachableParent is TransitiveUnsafeParent {
}
          

contracts/test/Memory08.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

contract Memory08 {
  mapping(string => address) a;
  mapping(bytes => address) b;
}

contract Memory08Bad {
  mapping(bytes => address) a;
  mapping(string => address) b;
}
          

@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol

// SPDX-License-Identifier: MIT

// solhint-disable-next-line compiler-version
pragma solidity ^0.8.0;

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 */
abstract contract Initializable {

    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        require(_initializing || !_initialized, "Initializable: contract is already initialized");

        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }
}
          

contracts/test/ignore-errors/TransitiveRiskyLibrary.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./RiskyLibrary.sol";

library TransitiveRiskyLibrary {
    function isContract(address account) internal view returns (bool) {
        return RiskyLibrary.isContract(account);
    }

    function internalDelegateCall(
        address target,
        bytes memory data
    ) internal returns (bytes memory) {
        return RiskyLibrary.internalDelegateCall(target, data);
    }
}
          

contracts/test/ignore-errors/UnsafeAllow.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./TransitiveRiskyLibrary.sol";

// allow has no effect because the delegatecall is in a transitive function
contract UnsafeAllow {
    /// @custom:oz-upgrades-unsafe-allow delegatecall
    function unsafe(address target, bytes memory data) public {
        TransitiveRiskyLibrary.internalDelegateCall(target, data);
    }
}
          

@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./TransparentUpgradeableProxy.sol";
import "../../access/Ownable.sol";

/**
 * @dev This is an auxiliary contract meant to be assigned as the admin of a {TransparentUpgradeableProxy}. For an
 * explanation of why you would want to use this see the documentation for {TransparentUpgradeableProxy}.
 */
contract ProxyAdmin is Ownable {

    /**
     * @dev Returns the current implementation of `proxy`.
     *
     * Requirements:
     *
     * - This contract must be the admin of `proxy`.
     */
    function getProxyImplementation(TransparentUpgradeableProxy proxy) public view virtual returns (address) {
        // We need to manually run the static call since the getter cannot be flagged as view
        // bytes4(keccak256("implementation()")) == 0x5c60da1b
        (bool success, bytes memory returndata) = address(proxy).staticcall(hex"5c60da1b");
        require(success);
        return abi.decode(returndata, (address));
    }

    /**
     * @dev Returns the current admin of `proxy`.
     *
     * Requirements:
     *
     * - This contract must be the admin of `proxy`.
     */
    function getProxyAdmin(TransparentUpgradeableProxy proxy) public view virtual returns (address) {
        // We need to manually run the static call since the getter cannot be flagged as view
        // bytes4(keccak256("admin()")) == 0xf851a440
        (bool success, bytes memory returndata) = address(proxy).staticcall(hex"f851a440");
        require(success);
        return abi.decode(returndata, (address));
    }

    /**
     * @dev Changes the admin of `proxy` to `newAdmin`.
     *
     * Requirements:
     *
     * - This contract must be the current admin of `proxy`.
     */
    function changeProxyAdmin(TransparentUpgradeableProxy proxy, address newAdmin) public virtual onlyOwner {
        proxy.changeAdmin(newAdmin);
    }

    /**
     * @dev Upgrades `proxy` to `implementation`. See {TransparentUpgradeableProxy-upgradeTo}.
     *
     * Requirements:
     *
     * - This contract must be the admin of `proxy`.
     */
    function upgrade(TransparentUpgradeableProxy proxy, address implementation) public virtual onlyOwner {
        proxy.upgradeTo(implementation);
    }

    /**
     * @dev Upgrades `proxy` to `implementation` and calls a function on the new implementation. See
     * {TransparentUpgradeableProxy-upgradeToAndCall}.
     *
     * Requirements:
     *
     * - This contract must be the admin of `proxy`.
     */
    function upgradeAndCall(TransparentUpgradeableProxy proxy, address implementation, bytes memory data) public payable virtual onlyOwner {
        proxy.upgradeToAndCall{value: msg.value}(implementation, data);
    }
}
          

contracts/test/ignore-errors/UnsafeContractWithParentCall.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./RiskyParentContract.sol";

contract UnsafeContractWithParentCall is RiskyParentContract {
    function unsafe(address target, bytes memory data) public {
        internalDelegateCall(target, data);
    }
}
          

@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.2;

import "../beacon/IBeacon.sol";
import "../../utils/Address.sol";
import "../../utils/StorageSlot.sol";

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
abstract contract ERC1967Upgrade {
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallSecure(address newImplementation, bytes memory data, bool forceCall) internal {
        address oldImplementation = _getImplementation();

        // Initial upgrade and setup call
        _setImplementation(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }

        // Perform rollback test if not already in progress
        StorageSlot.BooleanSlot storage rollbackTesting = StorageSlot.getBooleanSlot(_ROLLBACK_SLOT);
        if (!rollbackTesting.value) {
            // Trigger rollback using upgradeTo from the new implementation
            rollbackTesting.value = true;
            Address.functionDelegateCall(
                newImplementation,
                abi.encodeWithSignature(
                    "upgradeTo(address)",
                    oldImplementation
                )
            );
            rollbackTesting.value = false;
            // Check rollback was effective
            require(oldImplementation == _getImplementation(), "ERC1967Upgrade: upgrade breaks further upgrades");
            // Finally reset to the new implementation and log the upgrade
            _setImplementation(newImplementation);
            emit Upgraded(newImplementation);
        }
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
        }
    }

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

    /**
     * @dev Emitted when the beacon is upgraded.
     */
    event BeaconUpgraded(address indexed beacon);

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlot.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(
            Address.isContract(newBeacon),
            "ERC1967: new beacon is not a contract"
        );
        require(
            Address.isContract(IBeacon(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }
}
          

@openzeppelin/contracts/utils/StorageSlot.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        assembly {
            r.slot := slot
        }
    }
}
          

contracts/test/ValidationsNatspecImport.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;

/// @custom:oz-upgrades-unsafe-allow state-variable-assignment
contract ImportedHasStateVariableAssignmentNatspec1 {
  uint x = 1;
}

contract ImportedHasStateVariableAssignmentNatspec2 {
  /// @custom:oz-upgrades-unsafe-allow state-variable-assignment
  uint x = 1;
}
          

contracts/test/ignore-errors/UnsafeAllowReachableDifferentOpcode.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./TransitiveRiskyLibrary.sol";

// allow-reachable has no effect because the transitive function has a different opcode
contract UnsafeAllowReachableDifferentOpcode {
    /// @custom:oz-upgrades-unsafe-allow-reachable selfdestruct
    function unsafe(bytes memory data) public {
        TransitiveRiskyLibrary.internalDelegateCall(address(this), data);
    }
}
          

contracts/test/ignore-errors/AllowChild.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./AllowParent.sol";

contract AllowChild is AllowParent {
  function shouldBeAllowed(bytes memory data) public {
    internalDelegateCall(data);
  }
}
          

contracts/test/ignore-errors/UnsafeContract.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

contract UnsafeContract {
    function externalDelegateCall(
        address target,
        bytes memory data
    ) external returns (bytes memory) {
        (, bytes memory returndata) = target.delegatecall(data);
        return returndata;
    }
}
          

contracts/test/ignore-errors/UnsafeContractWithInheritedTransitiveParent.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./TransitiveUnsafeParent.sol";

contract UnsafeContractWithInheritedTransitiveParent is TransitiveUnsafeParent {
}
          

contracts/test/ValidationsNatspec.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;

/// @custom:oz-upgrades-unsafe-allow constructor
contract HasNonEmptyConstructorNatspec1 {
  constructor() { msg.sender; }
}

contract HasNonEmptyConstructorNatspec2 {
  /// @custom:oz-upgrades-unsafe-allow constructor
  constructor() { msg.sender; }
}

/**
 * @custom:oz-upgrades-unsafe-allow constructor
 */
contract HasNonEmptyConstructorNatspec3 {
  constructor() { msg.sender; }
}

/**
 * @dev This confused the parser.
 * @custom:oz-upgrades-unsafe-allow constructor
 */
contract HasNonEmptyConstructorNatspec4 {
  constructor() { msg.sender; }
}

contract ParentHasNonEmptyConstructorNatspec1 is HasNonEmptyConstructorNatspec1 {}
contract ParentHasNonEmptyConstructorNatspec2 is HasNonEmptyConstructorNatspec2 {}
contract AncestorHasNonEmptyConstructorNatspec1 is ParentHasNonEmptyConstructorNatspec1 {}
contract AncestorHasNonEmptyConstructorNatspec2 is ParentHasNonEmptyConstructorNatspec2 {}

/// @custom:oz-upgrades-unsafe-allow state-variable-assignment
contract HasStateVariableAssignmentNatspec1 {
  uint x = 1;
}

contract HasStateVariableAssignmentNatspec2 {
  /// @custom:oz-upgrades-unsafe-allow state-variable-assignment
  uint x = 1;
}

contract HasStateVariableAssignmentNatspec3 {
  /// @custom:oz-upgrades-unsafe-allow state-variable-assignment
  uint x = 1;
  uint y = 2;
}

/// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
contract HasImmutableStateVariableNatspec1 {
  uint immutable x = 1;
}

contract HasImmutableStateVariableNatspec2 {
  /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
  uint immutable x = 1;
}

contract HasImmutableStateVariableNatspec3 {
  /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
  uint immutable x = 1;
  uint immutable y = 2;
}

/// @custom:oz-upgrades-unsafe-allow selfdestruct
contract HasSelfDestructNatspec1 {
  function d() public {
    selfdestruct(payable(msg.sender));
  }
}

contract HasSelfDestructNatspec2 {
  /// @custom:oz-upgrades-unsafe-allow selfdestruct
  function d() public {
    selfdestruct(payable(msg.sender));
  }
}

contract HasSelfDestructNatspec3 {
  function d() public {
    /// @custom:oz-upgrades-unsafe-allow selfdestruct
    selfdestruct(payable(msg.sender));
  }
}

/// @custom:oz-upgrades-unsafe-allow delegatecall
contract HasDelegateCallNatspec1 {
  function d() public {
    (bool s, ) = msg.sender.delegatecall("");
    s;
  }
}

contract HasDelegateCallNatspec2 {
  /// @custom:oz-upgrades-unsafe-allow delegatecall
  function d() public {
    (bool s, ) = msg.sender.delegatecall("");
    s;
  }
}

contract HasDelegateCallNatspec3 {
  function d() public {
    /// @custom:oz-upgrades-unsafe-allow delegatecall
    (bool s, ) = msg.sender.delegatecall("");
    s;
  }
}

import './ValidationsNatspecImport.sol';

contract ImportedParentHasStateVariableAssignmentNatspec1 is ImportedHasStateVariableAssignmentNatspec1 {}
contract ImportedParentHasStateVariableAssignmentNatspec2 is ImportedHasStateVariableAssignmentNatspec2 {}

// For each of 3 dimensions, libraries usage can be
// 1. implicit or explicit (_use for_ directive or not)
// 2. upgrade safe or unsafe
// 3. internal or external (method's visibility)

// libs

library SafeInternalLibraryNatspec {
  function add(uint x, uint y) internal pure returns (uint) {
    return x + y;
  }
}

library SafeExternalLibraryNatspec {
  function add(uint x, uint y) public pure returns (uint) {
    return x + y;
  }
}

library UnsafeInternalLibraryNatspec {
  function explode(uint x, uint y) internal {
    x + y;
    /// @custom:oz-upgrades-unsafe-allow selfdestruct
    selfdestruct(payable(msg.sender));
  }
}

library UnsafeExternalLibraryNatspec {
  function explode(uint x, uint y) public {
    x + y;
    /// @custom:oz-upgrades-unsafe-allow selfdestruct
    selfdestruct(payable(msg.sender));
  }
}

// usage

contract UsesImplicitSafeInternalLibraryNatspec {
  using SafeInternalLibraryNatspec for uint;
  uint x;

  function foo(uint y) public view {
    x.add(y);
  }
}

/// @custom:oz-upgrades-unsafe-allow external-library-linking
contract UsesImplicitSafeExternalLibraryNatspec {
  using SafeExternalLibraryNatspec for uint;
  uint x;

  function foo(uint y) public view {
    x.add(y);
  }
}

contract UsesImplicitUnsafeInternalLibraryNatspec {
  using UnsafeInternalLibraryNatspec for uint;
  uint x;

  function foo(uint y) public {
    x.explode(y);
  }
}

/// @custom:oz-upgrades-unsafe-allow external-library-linking
contract UsesImplicitUnsafeExternalLibraryNatspec {
  using UnsafeExternalLibraryNatspec for uint;
  uint x;

  function foo(uint y) public {
    x.explode(y);
  }
}

contract UsesExplicitSafeInternalLibraryNatspec {
  uint x;

  function foo(uint y) public view {
    SafeInternalLibraryNatspec.add(x, y);
  }
}

/// @custom:oz-upgrades-unsafe-allow external-library-linking
contract UsesExplicitSafeExternalLibraryNatspec {
  uint x;

  function foo(uint y) public view {
    SafeExternalLibraryNatspec.add(x, y);
  }
}

contract UsesExplicitUnsafeInternalLibraryNatspec {
  uint x;

  function foo(uint y) public {
    UnsafeInternalLibraryNatspec.explode(x, y);
  }
}

/// @custom:oz-upgrades-unsafe-allow external-library-linking
contract UsesExplicitUnsafeExternalLibraryNatspec {
  uint x;

  function foo(uint y) public {
    UnsafeExternalLibraryNatspec.explode(x, y);
  }
}
          

contracts/test/RetypeFromContract.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;

interface CustomInterface {}
contract CustomContract {}

interface CustomInterface2 {}
contract CustomContract2 {}

contract RetypeContractToUint160V1 {
    CustomInterface a;
    CustomContract b;
}

contract RetypeContractToUint160V2 {
    /// @custom:oz-retyped-from CustomInterface
    uint160 a;

    /// @custom:oz-retyped-from CustomContract
    uint160 b;
}

contract RetypeUint160ToContractV1 {
    uint160 a;
    uint160 b;
}

contract RetypeUint160ToContractV2 {
    /// @custom:oz-retyped-from uint160
    CustomInterface private a;

    /// @custom:oz-retyped-from uint160
    CustomContract private b;
}

contract RetypeContractToUint160MappingV1 {
    mapping(uint8 => CustomInterface) a;
    mapping(uint8 => CustomContract) b;
    mapping(CustomInterface => CustomInterface) c;
    mapping(CustomContract => CustomContract) d;
}

contract RetypeContractToUint160MappingV2 {
    /// @custom:oz-retyped-from mapping(uint8 => CustomInterface)
    mapping(uint8 => uint160) a;

    /// @custom:oz-retyped-from mapping(uint8 => CustomContract)
    mapping(uint8 => uint160) b;

    /// @custom:oz-retyped-from mapping(CustomInterface => CustomInterface)
    mapping(uint160 => uint160) c;

    /// @custom:oz-retyped-from mapping(CustomContract => CustomContract)
    mapping(uint160 => uint160) d;
}

contract RetypeUint160ToContractMappingV1 {
    mapping(uint8 => uint160) a;
    mapping(uint8 => uint160) b;
    mapping(uint160 => uint160) c;
    mapping(uint160 => uint160) d;
}

contract RetypeUint160ToContractMappingV2 {
    /// @custom:oz-retyped-from mapping(uint8 => uint160)
    mapping(uint8 => CustomInterface) a;

    /// @custom:oz-retyped-from mapping(uint8 => uint160)
    mapping(uint8 => CustomContract) b;

    /// @custom:oz-retyped-from mapping(uint160 => uint160)
    mapping(CustomInterface => CustomInterface) c;

    /// @custom:oz-retyped-from mapping(uint160 => uint160)
    mapping(CustomContract => CustomContract) d;
}

contract ImplicitRetypeV1 {
    CustomInterface a;
    CustomContract b;

    address c;
    address d;

    CustomInterface e;
    CustomInterface f;

    CustomContract g;
    CustomContract h;
}

contract ImplicitRetypeV2 {
    address a;
    address b;

    CustomInterface c;
    CustomContract d;

    CustomInterface2 e;
    CustomContract f;

    CustomContract2 g;
    CustomInterface h;
}

contract ImplicitRetypeMappingV1 {
    mapping(uint8 => CustomInterface) a;
    mapping(uint8 => CustomContract) b;

    mapping(uint8 => address) c;
    mapping(uint8 => address) d;

    mapping(uint8 => CustomInterface) e;
    mapping(uint8 => CustomInterface) f;

    mapping(uint8 => CustomContract) g;
    mapping(uint8 => CustomContract) h;
}

contract ImplicitRetypeMappingV2 {
    mapping(uint8 => address) a;
    mapping(uint8 => address) b;

    mapping(uint8 => CustomInterface) c;
    mapping(uint8 => CustomContract) d;

    mapping(uint8 => CustomInterface2) e;
    mapping(uint8 => CustomContract) f;

    mapping(uint8 => CustomContract2) g;
    mapping(uint8 => CustomInterface) h;
}

struct StructUint256 {
    uint256 a;
    uint256 b;
}

contract RetypeStructV1 {
    StructUint256 x;
}

contract RetypeStructV2 {
    /// @custom:oz-retyped-from StructUint256
    uint256[2] x;
}

contract RetypeStructV2Bad {
    /// @custom:oz-retyped-from StructUint256
    uint256[3] x;
}

enum MyEnums { ONE, TWO }

contract RetypeEnumV1 {
    MyEnums x;
}

contract RetypeEnumV2 {
    /// @custom:oz-retyped-from MyEnums
    uint8 x;
}

contract RetypeEnumV2Bad {
    /// @custom:oz-retyped-from MyEnums
    uint16 x;
}
          

contracts/test/ValidationsUDVT.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

contract ValidationsUDVT {
  type MyUserValueType is uint128;
  MyUserValueType my_user_value;
  function foo(MyUserValueType v) external {
      my_user_value = v;
  }
}
          

contracts/test/ignore-errors/SafeContractWithLibraryCall.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./RiskyLibrary.sol";

contract SafeContractWithLibraryCall {
    function safe() public view returns (bool) {
        return RiskyLibrary.isContract(address(this));
    }
}
          

contracts/test/ignore-errors/SafeContractWithLibraryUsingFor.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./RiskyLibrary.sol";

contract SafeContractWithLibraryUsingFor {
    using RiskyLibrary for address;

    function safe() public view returns (bool) {
        return address(this).isContract();
    }
}
          

contracts/test/ignore-errors/UnsafeAllowReachableParentDifferentOpcode.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./TransitiveUnsafeParent.sol";

/**
 * allow-reachable has no effect because the parent function has a different opcode
 *
 * @custom:oz-upgrades-unsafe-allow-reachable selfdestruct
 */
contract UnsafeAllowReachableParentDifferentOpcode is TransitiveUnsafeParent {
}
          

contracts/test/ignore-errors/TransitiveUnsafeParent.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./UnsafeParentContract.sol";

contract TransitiveUnsafeParent is UnsafeParentContract {
}
          

contracts/test/ignore-errors/SafeContractWithTransitiveLibraryCall.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./TransitiveRiskyLibrary.sol";

contract SafeContractWithTransitiveLibraryCall {
    function safe() public view returns (bool) {
        return TransitiveRiskyLibrary.isContract(address(this));
    }
}
          

contracts/test/ignore-errors/UnsafeContractWithLibraryCall.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./RiskyLibrary.sol";

contract UnsafeContractWithLibraryCall {
    function unsafe(address target, bytes memory data) public {
        RiskyLibrary.internalDelegateCall(target, data);
    }
}
          

contracts/test/ignore-errors/AllowParentSelfReachable.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

/**
 * allow-reachable causes the delegatecall to be ignored for all functions in this contract, including its own lexical scope
 *
 * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
 */
contract AllowParentSelfReachable {
    function internalDelegateCall(
        bytes memory data
    ) internal returns (bytes memory) {
        (, bytes memory returndata) = address(this).delegatecall(data);
        return returndata;
    }
}
          

contracts/test/ignore-errors/AllowReachable.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./TransitiveRiskyLibrary.sol";

// allow-reachable causes the delegatecall in a transitive function to be ignored
contract AllowReachable {
    /// @custom:oz-upgrades-unsafe-allow-reachable delegatecall
    function unsafe(bytes memory data) public {
        TransitiveRiskyLibrary.internalDelegateCall(address(this), data);
    }
}
          

contracts/test/ignore-errors/RiskyFreeFunctions.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

function isContract(address account) view returns (bool) {
    return account.code.length > 0;
}

function freeDelegateCall(
    address target,
    bytes memory data
) returns (bytes memory) {
    (, bytes memory returndata) = target.delegatecall(data);
    return returndata;
}
          

contracts/test/ignore-errors/SafeRecursion.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./RiskyParentContract.sol";

contract SafeRecursion is RiskyParentContract {
    function safe(uint256 i) public view returns (bool) {
        if (++i == 10) {
            return isContract(address(this));
        } else {
            return safe(i);
        }
    }
}
          

contracts/test/ignore-errors/AllowChildCallTransitive.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./AllowReachableParentCall.sol";

contract AllowChildCallTransitive is AllowReachableParentCall {
  function myfunction(bytes memory data) internal {
      allowed(data);
  }
}
          

contracts/test/ignore-errors/UnsafeRecursion.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./RiskyParentContract.sol";

contract UnsafeRecursion is RiskyParentContract {
    function unsafe(uint256 i, address target, bytes memory data) public returns (bytes memory) {
        if (++i == 10) {
            return internalDelegateCall(target, data);
        } else {
            return unsafe(i, target, data);
        }
    }
}
          

@openzeppelin/contracts/utils/Address.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}
          

contracts/test/ignore-errors/RiskyLibrary.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

library RiskyLibrary {
    function isContract(address account) internal view returns (bool) {
        return account.code.length > 0;
    }

    function internalDelegateCall(
        address target,
        bytes memory data
    ) internal returns (bytes memory) {
        (, bytes memory returndata) = target.delegatecall(data);
        return returndata;
    }

    function privateDelegateCall(
        address target,
        bytes memory data
    ) private returns (bytes memory) {
        (, bytes memory returndata) = target.delegatecall(data);
        return returndata;
    }

    function publicDelegateCall(
        address target,
        bytes memory data
    ) public returns (bytes memory) {
        (, bytes memory returndata) = target.delegatecall(data);
        return returndata;
    }

    function externalDelegateCall(
        address target,
        bytes memory data
    ) external returns (bytes memory) {
        (, bytes memory returndata) = target.delegatecall(data);
        return returndata;
    }
}
          

contracts/test/ignore-errors/AllowReachableParentCall.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./RiskyParentContract.sol";

/**
 * allow-reachable causes the delegatecall to be ignored for all reachable functions from this contract
 *
 * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
 */
contract AllowReachableParentCall is RiskyParentContract {
    function allowed(bytes memory data) internal {
        internalDelegateCall(address(this), data);
    }
}
          

contracts/test/Proxiable.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;

import "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";

abstract contract Proxiable is UUPSUpgradeable {
    function _authorizeUpgrade(address newImplementation) internal override {
        _beforeUpgrade(newImplementation);
    }

    function _beforeUpgrade(address newImplementation) internal virtual;
}

contract ChildOfProxiable is Proxiable {
    function _beforeUpgrade(address newImplementation) internal virtual override {}
}
          

contracts/test/Standalone.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;

contract StandaloneV1 {
    uint a;
    string b;

    function extremelyUnsafe(address target, bytes memory data) public {
        (bool ok, ) = target.delegatecall(data);
        require(ok);
    }
}

contract StandaloneV2Good {
    uint a;
    string b;
    uint c;
}

contract StandaloneV2Bad {
    uint x;
    uint a;
    string b;
}

contract StandaloneRenameV1 {
    uint x;
}

contract StandaloneRenameV2 {
    /// @custom:oz-renamed-from x
    uint y;
}

contract StandaloneRenameV3 is StandaloneRenameV2 {
    uint z;
}
          

contracts/test/ignore-errors/RiskyParentContract.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

contract RiskyParentContract {
    function isContract(address account) internal view returns (bool) {
        return account.code.length > 0;
    }

    function internalDelegateCall(
        address target,
        bytes memory data
    ) internal returns (bytes memory) {
        (, bytes memory returndata) = target.delegatecall(data);
        return returndata;
    }

    function privateDelegateCall(
        address target,
        bytes memory data
    ) private returns (bytes memory) {
        (, bytes memory returndata) = target.delegatecall(data);
        return returndata;
    }
}
          

contracts/test/ignore-errors/AllowChildSelfReachable.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./AllowParentSelfReachable.sol";

contract AllowChildSelfReachable is AllowParentSelfReachable {
  function shouldBeAllowed(bytes memory data) public {
    internalDelegateCall(data);
  }
}
          

contracts/test/Storage089.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

contract Storage089 {
  type MyUserValueType is uint128;
  MyUserValueType my_user_value;
}

contract Storage089_V2 {
  type MyUserValueType is uint128;
  MyUserValueType my_user_value;

  uint x;
}

contract Storage089_V3 {
  type MyUserValueType is uint8;
  MyUserValueType my_user_value;

  uint x;
}
          

contracts/test/ignore-errors/Modifiers.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

abstract contract UnsafeParentModifier {
    modifier unsafe(bytes memory data) {
        _;
        msg.sender.delegatecall(data);
    }
}

// TODO: do not throw an error in this case
// contract ModifierNotUsed is UnsafeParentModifier {
//     function foo() public {}
// }

contract ModifierUsed is UnsafeParentModifier {
    function foo() public unsafe('') {}
}
          

contracts/test/ignore-errors/UnsafeContractWithInheritedParent.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./UnsafeParentContract.sol";

contract UnsafeContractWithInheritedParent is UnsafeParentContract {
}
          

@openzeppelin/contracts/access/Ownable.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}
          

contracts/test/ignore-errors/Constructors.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

abstract contract UnsafeParent {
    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor(bytes memory data) {
        msg.sender.delegatecall(data);
    }
}

contract UnsafeChild1 is UnsafeParent {
    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() UnsafeParent('') {}

    function foo1(uint x) public {}
}

contract UnsafeChild2 is UnsafeParent('') {
    function foo2(uint x) public {}
}

abstract contract UnsafeParentNoArgs {
    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        msg.sender.delegatecall('');
    }
}

contract UnsafeChild3 is UnsafeParentNoArgs {
    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() UnsafeParentNoArgs() {}

    function foo3(uint x) public {}
}

contract UnsafeChild4 is UnsafeParentNoArgs {
    function foo4(uint x) public {}
}

/**
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
abstract contract AllowParentNoArgs {
    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        msg.sender.delegatecall('');
    }
}

contract AllowChild5 is AllowParentNoArgs {
    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() AllowParentNoArgs() {}

    function foo5(uint x) public {}
}

contract AllowChild6 is AllowParentNoArgs {
    function foo6(uint x) public {}
}

/**
 * allow has no effect because the delegatecall is in a parent function
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
contract UnsafeAllowChild7 is UnsafeParentNoArgs {
    function foo7(uint x) public {}
}

/**
 * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
 */
contract AllowReachableChild8 is UnsafeParentNoArgs {
    function foo8(uint x) public {}
}

abstract contract UnsafeFunctions {
    function unsafe() internal {
        msg.sender.delegatecall('');
    }
}

contract UnsafeChild9 is UnsafeFunctions {
    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        unsafe();
    }

    function foo9(uint x) public {}
}
          

contracts/test/ignore-errors/SafeContractWithFreeFunctionCall.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "./RiskyFreeFunctions.sol" as RiskyFreeFunctions;

contract SafeContractWithFreeFunctionCall {
    function safe() public view returns (bool) {
        return RiskyFreeFunctions.isContract(address(this));
    }
}
          

@openzeppelin/contracts/proxy/beacon/IBeacon.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeacon {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}
          

contracts/test/ignore-errors/SafeContract.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

contract SafeContract {
}
          

Compiler Settings

{"outputSelection":{"*":{"*":["*"],"":["*"]}},"optimizer":{"runs":200,"enabled":true},"libraries":{}}
              

Contract ABI

[{"type":"constructor","stateMutability":"payable","inputs":[{"type":"address","name":"_logic","internalType":"address"},{"type":"address","name":"admin_","internalType":"address"},{"type":"bytes","name":"_data","internalType":"bytes"}]},{"type":"event","name":"AdminChanged","inputs":[{"type":"address","name":"previousAdmin","internalType":"address","indexed":false},{"type":"address","name":"newAdmin","internalType":"address","indexed":false}],"anonymous":false},{"type":"event","name":"BeaconUpgraded","inputs":[{"type":"address","name":"beacon","internalType":"address","indexed":true}],"anonymous":false},{"type":"event","name":"Upgraded","inputs":[{"type":"address","name":"implementation","internalType":"address","indexed":true}],"anonymous":false},{"type":"fallback","stateMutability":"payable"},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"address","name":"admin_","internalType":"address"}],"name":"admin","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"changeAdmin","inputs":[{"type":"address","name":"newAdmin","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"address","name":"implementation_","internalType":"address"}],"name":"implementation","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"upgradeTo","inputs":[{"type":"address","name":"newImplementation","internalType":"address"}]},{"type":"function","stateMutability":"payable","outputs":[],"name":"upgradeToAndCall","inputs":[{"type":"address","name":"newImplementation","internalType":"address"},{"type":"bytes","name":"data","internalType":"bytes"}]},{"type":"receive","stateMutability":"payable"}]
              

Contract Creation Code

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Deployed ByteCode

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