contract D { uint256 x; constructor() { x = 7; } function f() public view returns (uint256) { return x; } } contract C { function test() public returns (uint256) { D d = new D(); bytes32 hash; assembly { hash := extcodehash(d) } assert(hash == keccak256(type(D).runtimeCode)); return 42; } } // ==== // EVMVersion: >=constantinople // compileViaYul: also // ---- // test() -> 42 // gas legacy: 101638