Selfdestruct: force another contract to receive your ethers.

Apr 1, 2022 · 1 min read · receive fallback selfdestruct  ·
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Overview

Insert Lead paragraph here.

"Smart Contract receive ethers ONLY when contract provide fallback() or receive() function. "

Is this statement true or not?

[ ] true

[ ] false

1pragma solidity ^0.8.0;
2
3// SPDX-License-Identifier: MIT
4contract MyContract {
5    receive() external payable {}
6    fallback() external payable {}
7}

The answer is false.

Why?

A smart contract has a selfdestruct() function to force transfer the contract's ethers to another address, whether the receiver address has receive ().

 1// SPDX-License-Identifier: MIT
 2pragma solidity ^0.8.0;
 3
 4contract ReceiveMyEth {
 5
 6    function deposit() public payable {}
 7    function destroy(address _addr) public {
 8        selfdestruct(payable(_addr));
 9    }
10
11}
12
13// empty contract without receive() and fallback()
14contract MyContract {
15    // receive() external payable {}
16    // fallback() external payable {}
17}

You can deposit some ethers into ReceiveMyEth contract, then call destroy() function to send ethers to MyContract contract.