282     unsafe_impl!(Option<NonZeroU8>: TryFromBytes, FromZeros, FromBytes, IntoBytes, Unaligned);
283     unsafe_impl!(Option<NonZeroI8>: TryFromBytes, FromZeros, FromBytes, IntoBytes, Unaligned);
284     assert_unaligned!(Option<NonZeroU8>, Option<NonZeroI8>);
285     unsafe_impl!(Option<NonZeroU16>: TryFromBytes, FromZeros, FromBytes, IntoBytes);
286     unsafe_impl!(Option<NonZeroI16>: TryFromBytes, FromZeros, FromBytes, IntoBytes);
287     unsafe_impl!(Option<NonZeroU32>: TryFromBytes, FromZeros, FromBytes, IntoBytes);
288     unsafe_impl!(Option<NonZeroI32>: TryFromBytes, FromZeros, FromBytes, IntoBytes);
289     unsafe_impl!(Option<NonZeroU64>: TryFromBytes, FromZeros, FromBytes, IntoBytes);
290     unsafe_impl!(Option<NonZeroI64>: TryFromBytes, FromZeros, FromBytes, IntoBytes);
291     unsafe_impl!(Option<NonZeroU128>: TryFromBytes, FromZeros, FromBytes, IntoBytes);
292     unsafe_impl!(Option<NonZeroI128>: TryFromBytes, FromZeros, FromBytes, IntoBytes);
293     unsafe_impl!(Option<NonZeroUsize>: TryFromBytes, FromZeros, FromBytes, IntoBytes);
294     unsafe_impl!(Option<NonZeroIsize>: TryFromBytes, FromZeros, FromBytes, IntoBytes);
336         T => TryFromBytes for Option<Box<T>>; |c| pointer::is_zeroed(c)
341         T => FromZeros for Option<Box<T>>
344         T => TryFromBytes for Option<&'_ T>; |c| pointer::is_zeroed(c)
346     unsafe_impl!(T => FromZeros for Option<&'_ T>);
348             T => TryFromBytes for Option<&'_ mut T>; |c| pointer::is_zeroed(c)
350     unsafe_impl!(T => FromZeros for Option<&'_ mut T>);
352         T => TryFromBytes for Option<NonNull<T>>; |c| pointer::is_zeroed(c)
354     unsafe_impl!(T => FromZeros for Option<NonNull<T>>);
990 const _: () = unsafe { unsafe_impl!(T: Immutable => Immutable for Option<T>) };
1428                     impl TryFromBytesTestable for Option<$tys> {  in test_impls()
1527                    @failure Option::<Self>::None;  in test_impls()
1580                     -> Option<bool>;  in test_impls()
1588                 ) -> Option<bool> {  in test_impls()
1598                 ) -> Option<Option<&'bytes T>>;  in test_impls()
1606                 ) -> Option<Option<&'bytes T>> {  in test_impls()
1616                 ) -> Option<Option<&'bytes mut T>>;  in test_impls()
1624                 ) -> Option<Option<&'bytes mut T>> {  in test_impls()
1630                 fn test_try_read_from(&self, bytes: &[u8]) -> Option<Option<T>>;  in test_impls()
1634                 fn test_try_read_from(&self, bytes: &[u8]) -> Option<Option<T>> {  in test_impls()
1641                 fn test_as_bytes<'slf, 't>(&'slf self, t: &'t ReadOnly<T>) -> Option<&'t [u8]>;  in test_impls()
1646                 fn test_as_bytes<'slf, 't>(&'slf self, t: &'t ReadOnly<T>) -> Option<&'t [u8]> {  in test_impls()
1696                     ) -> Option<bool> {  in test_impls()
1711 …     fn test_try_from_ref<'bytes>(&mut self, _bytes: &'bytes [u8]) -> Option<Option<&'bytes $ty>> {  in test_impls()
1721 …fn test_try_from_mut<'bytes>(&mut self, _bytes: &'bytes mut [u8]) -> Option<Option<&'bytes mut $ty…  in test_impls()
1724                             Option<Box<UnsafeCell<NotZerocopy>>>,  in test_impls()
1725                             Option<&'static UnsafeCell<NotZerocopy>>,  in test_impls()
1726                             Option<&'static mut UnsafeCell<NotZerocopy>>,  in test_impls()
1727                             Option<NonNull<UnsafeCell<NotZerocopy>>>,  in test_impls()
1728                             Option<fn()>,  in test_impls()
1729                             Option<FnManyArgs>,  in test_impls()
1730                             Option<extern "C" fn()>,  in test_impls()
1731                             Option<ECFnManyArgs>,  in test_impls()
1739                     fn test_try_read_from(&mut self, _bytes: &[u8]) -> Option<Option<&$ty>> {  in test_impls()
1753                     fn test_as_bytes(&mut self, _t: &ReadOnly<$ty>) -> Option<&[u8]> {  in test_impls()
1756                             Option<&'static UnsafeCell<NotZerocopy>>,  in test_impls()
1757                             Option<&'static mut UnsafeCell<NotZerocopy>>,  in test_impls()
1758                             Option<NonNull<UnsafeCell<NotZerocopy>>>,  in test_impls()
1759                             Option<Box<UnsafeCell<NotZerocopy>>>,  in test_impls()
1760                             Option<fn()>,  in test_impls()
1761                             Option<FnManyArgs>,  in test_impls()
1762                             Option<extern "C" fn()>,  in test_impls()
1763                             Option<ECFnManyArgs>,  in test_impls()
2192 …assert_impls!(Option<NonZeroU8>: KnownLayout, Immutable, TryFromBytes, FromZeros, FromBytes, IntoB…  in test_impls()
2193 …assert_impls!(Option<NonZeroI8>: KnownLayout, Immutable, TryFromBytes, FromZeros, FromBytes, IntoB…  in test_impls()
2194 …assert_impls!(Option<NonZeroU16>: KnownLayout, Immutable, TryFromBytes, FromZeros, FromBytes, Into…  in test_impls()
2195 …assert_impls!(Option<NonZeroI16>: KnownLayout, Immutable, TryFromBytes, FromZeros, FromBytes, Into…  in test_impls()
2196 …assert_impls!(Option<NonZeroU32>: KnownLayout, Immutable, TryFromBytes, FromZeros, FromBytes, Into…  in test_impls()
2197 …assert_impls!(Option<NonZeroI32>: KnownLayout, Immutable, TryFromBytes, FromZeros, FromBytes, Into…  in test_impls()
2198 …assert_impls!(Option<NonZeroU64>: KnownLayout, Immutable, TryFromBytes, FromZeros, FromBytes, Into…  in test_impls()
2199 …assert_impls!(Option<NonZeroI64>: KnownLayout, Immutable, TryFromBytes, FromZeros, FromBytes, Into…  in test_impls()
2200 …assert_impls!(Option<NonZeroU128>: KnownLayout, Immutable, TryFromBytes, FromZeros, FromBytes, Int…  in test_impls()
2201 …assert_impls!(Option<NonZeroI128>: KnownLayout, Immutable, TryFromBytes, FromZeros, FromBytes, Int…  in test_impls()
2202 …assert_impls!(Option<NonZeroUsize>: KnownLayout, Immutable, TryFromBytes, FromZeros, FromBytes, In…  in test_impls()
2203 …assert_impls!(Option<NonZeroIsize>: KnownLayout, Immutable, TryFromBytes, FromZeros, FromBytes, In…  in test_impls()
2221 …assert_impls!(Option<Box<UnsafeCell<NotZerocopy>>>: KnownLayout, Immutable, TryFromBytes, FromZero…  in test_impls()
2222 …assert_impls!(Option<Box<[UnsafeCell<NotZerocopy>]>>: KnownLayout, !Immutable, !TryFromBytes, !Fro…  in test_impls()
2223 …assert_impls!(Option<&'static UnsafeCell<NotZerocopy>>: KnownLayout, Immutable, TryFromBytes, From…  in test_impls()
2224 …assert_impls!(Option<&'static [UnsafeCell<NotZerocopy>]>: KnownLayout, Immutable, !TryFromBytes, !…  in test_impls()
2225 …assert_impls!(Option<&'static mut UnsafeCell<NotZerocopy>>: KnownLayout, Immutable, TryFromBytes, …  in test_impls()
2226 …assert_impls!(Option<&'static mut [UnsafeCell<NotZerocopy>]>: KnownLayout, Immutable, !TryFromByte…  in test_impls()
2227 …assert_impls!(Option<NonNull<UnsafeCell<NotZerocopy>>>: KnownLayout, TryFromBytes, FromZeros, Immu…  in test_impls()
2228 …assert_impls!(Option<NonNull<[UnsafeCell<NotZerocopy>]>>: KnownLayout, Immutable, !TryFromBytes, !…  in test_impls()
2229 …assert_impls!(Option<fn()>: KnownLayout, Immutable, TryFromBytes, FromZeros, !FromBytes, !IntoByte…  in test_impls()
2230 …assert_impls!(Option<FnManyArgs>: KnownLayout, Immutable, TryFromBytes, FromZeros, !FromBytes, !In…  in test_impls()
2231 …assert_impls!(Option<extern "C" fn()>: KnownLayout, Immutable, TryFromBytes, FromZeros, !FromBytes…  in test_impls()
2232 …assert_impls!(Option<ECFnManyArgs>: KnownLayout, Immutable, TryFromBytes, FromZeros, !FromBytes, !…  in test_impls()