contract C { function index(uint256 len) public returns (bool) { uint[] memory array = new uint[](len); for (uint256 i = 0; i < len; i++) array[i] = i + 1; for (uint256 i = 0; i < len; i++) require(array[i] == i + 1, "Unexpected value in array!"); return array.length == len; } function accessIndex(uint256 len, int256 idx) public returns (uint256) { uint[] memory array = new uint[](len); for (uint256 i = 0; i < len; i++) array[i] = i + 1; return array[uint256(idx)]; } } // ==== // compileViaYul: also // ---- // index(uint256): 0 -> true // index(uint256): 10 -> true // index(uint256): 20 -> true // index(uint256): 0xFF -> true // accessIndex(uint256,int256): 10, 1 -> 2 // accessIndex(uint256,int256): 10, 0 -> 1 // accessIndex(uint256,int256): 10, 11 -> FAILURE, hex"4e487b71", 0x32 // accessIndex(uint256,int256): 10, 10 -> FAILURE, hex"4e487b71", 0x32 // accessIndex(uint256,int256): 10, -1 -> FAILURE, hex"4e487b71", 0x32