X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;ds=sidebyside;f=library%2Fcore%2Fsrc%2Fslice%2Fmod.rs;h=ec28cdd1ba0d9cf166ccf869ce70d77b94c6a1c0;hb=d32238532138485c80db4f2cd596372bce214e00;hp=e4b1bffcfe01089ebd3fc789d10d59263dc13486;hpb=621d4b7cbf896411fddc45c32a0b29b89a681158;p=rust.git diff --git a/library/core/src/slice/mod.rs b/library/core/src/slice/mod.rs index e4b1bffcfe0..ec28cdd1ba0 100644 --- a/library/core/src/slice/mod.rs +++ b/library/core/src/slice/mod.rs @@ -102,23 +102,14 @@ impl [T] { // SAFETY: const sound because we transmute out the length field as a usize (which it must be) #[rustc_allow_const_fn_unstable(const_fn_union)] pub const fn len(&self) -> usize { - #[cfg(bootstrap)] - { - // SAFETY: this is safe because `&[T]` and `FatPtr` have the same layout. - // Only `std` can make this guarantee. - unsafe { crate::ptr::Repr { rust: self }.raw.len } - } - #[cfg(not(bootstrap))] - { - // FIXME: Replace with `crate::ptr::metadata(self)` when that is const-stable. - // As of this writing this causes a "Const-stable functions can only call other - // const-stable functions" error. - - // SAFETY: Accessing the value from the `PtrRepr` union is safe since *const T - // and PtrComponents have the same memory layouts. Only std can make this - // guarantee. - unsafe { crate::ptr::PtrRepr { const_ptr: self }.components.metadata } - } + // FIXME: Replace with `crate::ptr::metadata(self)` when that is const-stable. + // As of this writing this causes a "Const-stable functions can only call other + // const-stable functions" error. + + // SAFETY: Accessing the value from the `PtrRepr` union is safe since *const T + // and PtrComponents have the same memory layouts. Only std can make this + // guarantee. + unsafe { crate::ptr::PtrRepr { const_ptr: self }.components.metadata } } /// Returns `true` if the slice has a length of 0. @@ -2265,8 +2256,7 @@ pub fn binary_search_by<'a, F>(&'a self, mut f: F) -> Result // in crate `alloc`, and as such doesn't exists yet when building `core`. // links to downstream crate: #74481. Since primitives are only documented in // libstd (#73423), this never leads to broken links in practice. - #[cfg_attr(not(bootstrap), allow(rustdoc::broken_intra_doc_links))] - #[cfg_attr(bootstrap, allow(broken_intra_doc_links))] + #[allow(rustdoc::broken_intra_doc_links)] #[stable(feature = "slice_binary_search_by_key", since = "1.10.0")] #[inline] pub fn binary_search_by_key<'a, B, F>(&'a self, b: &B, mut f: F) -> Result