usecrate::mem::size_of;usecrate::os::unix::io::RawFd;#[test]fntest_raw_fd_layout(){// `OwnedFd` and `BorrowedFd` use `rustc_layout_scalar_valid_range_start`
// and `rustc_layout_scalar_valid_range_end`, with values that depend on
// the bit width of `RawFd`. If this ever changes, those values will need
// to be updated.
assert_eq!(size_of::<RawFd>(),4);}