1 use crate::std::mem::size_of; 2 use crate::std::os::wasi::io::RawFd; 3 4 #[test] 5 fn test_raw_fd_layout() { 6 // `OwnedFd` and `BorrowedFd` use `rustc_layout_scalar_valid_range_start` 7 // and `rustc_layout_scalar_valid_range_end`, with values that depend on 8 // the bit width of `RawFd`. If this ever changes, those values will need 9 // to be updated. 10 assert_eq!(size_of::<RawFd>(), 4); 11 } 12