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Pointer metadata: add tracking issue number

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This commit is contained in:
Simon Sapin 2021-01-29 14:38:48 +01:00
parent 5ade3fe32c
commit cf000f0408
5 changed files with 16 additions and 16 deletions
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4
library/core/src/ptr/const_ptr.rs
View file

@ -52,8 +52,8 @@ impl<T: ?Sized> *const T {
/// ///
/// The pointer can be later reconstructed with [`from_raw_parts`]. /// The pointer can be later reconstructed with [`from_raw_parts`].
#[cfg(not(bootstrap))] #[cfg(not(bootstrap))]
#[unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[unstable(feature = "ptr_metadata", issue = "81513")]
#[rustc_const_unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[rustc_const_unstable(feature = "ptr_metadata", issue = "81513")]
#[inline] #[inline]
pub const fn to_raw_parts(self) -> (*const (), <T as super::Pointee>::Metadata) { pub const fn to_raw_parts(self) -> (*const (), <T as super::Pointee>::Metadata) {
(self.cast(), super::metadata(self)) (self.cast(), super::metadata(self))

14
library/core/src/ptr/metadata.rs
View file

@ -1,4 +1,4 @@
#![unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #![unstable(feature = "ptr_metadata", issue = "81513")]
use crate::fmt; use crate::fmt;
use crate::hash::{Hash, Hasher}; use crate::hash::{Hash, Hasher};
@ -72,7 +72,7 @@ pub trait Pointee {
/// assert_eq!(std::mem::size_of::<&T>(), std::mem::size_of::<usize>()) /// assert_eq!(std::mem::size_of::<&T>(), std::mem::size_of::<usize>())
/// } /// }
/// ``` /// ```
#[unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[unstable(feature = "ptr_metadata", issue = "81513")]
// NOTE: don’t stabilize this before trait aliases are stable in the language? // NOTE: don’t stabilize this before trait aliases are stable in the language?
pub trait Thin = Pointee<Metadata = ()>; pub trait Thin = Pointee<Metadata = ()>;
@ -88,7 +88,7 @@ pub trait Thin = Pointee<Metadata = ()>;
/// ///
/// assert_eq!(std::ptr::metadata("foo"), 3_usize); /// assert_eq!(std::ptr::metadata("foo"), 3_usize);
/// ``` /// ```
#[rustc_const_unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[rustc_const_unstable(feature = "ptr_metadata", issue = "81513")]
#[inline] #[inline]
pub const fn metadata<T: ?Sized>(ptr: *const T) -> <T as Pointee>::Metadata { pub const fn metadata<T: ?Sized>(ptr: *const T) -> <T as Pointee>::Metadata {
// SAFETY: Accessing the value from the `PtrRepr` union is safe since *const T // SAFETY: Accessing the value from the `PtrRepr` union is safe since *const T
@ -104,8 +104,8 @@ pub const fn metadata<T: ?Sized>(ptr: *const T) -> <T as Pointee>::Metadata {
/// For trait objects, the metadata must come from a pointer to the same underlying ereased type. /// For trait objects, the metadata must come from a pointer to the same underlying ereased type.
/// ///
/// [`slice::from_raw_parts`]: crate::slice::from_raw_parts /// [`slice::from_raw_parts`]: crate::slice::from_raw_parts
#[unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[unstable(feature = "ptr_metadata", issue = "81513")]
#[rustc_const_unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[rustc_const_unstable(feature = "ptr_metadata", issue = "81513")]
#[inline] #[inline]
pub const fn from_raw_parts<T: ?Sized>( pub const fn from_raw_parts<T: ?Sized>(
data_address: *const (), data_address: *const (),
@ -121,8 +121,8 @@ pub const fn from_raw_parts<T: ?Sized>(
/// raw `*mut` pointer is returned, as opposed to a raw `*const` pointer. /// raw `*mut` pointer is returned, as opposed to a raw `*const` pointer.
/// ///
/// See the documentation of [`from_raw_parts`] for more details. /// See the documentation of [`from_raw_parts`] for more details.
#[unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[unstable(feature = "ptr_metadata", issue = "81513")]
#[rustc_const_unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[rustc_const_unstable(feature = "ptr_metadata", issue = "81513")]
#[inline] #[inline]
pub const fn from_raw_parts_mut<T: ?Sized>( pub const fn from_raw_parts_mut<T: ?Sized>(
data_address: *mut (), data_address: *mut (),

2
library/core/src/ptr/mod.rs
View file

@ -87,7 +87,7 @@ mod metadata;
#[cfg(not(bootstrap))] #[cfg(not(bootstrap))]
pub(crate) use metadata::PtrRepr; pub(crate) use metadata::PtrRepr;
#[cfg(not(bootstrap))] #[cfg(not(bootstrap))]
#[unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[unstable(feature = "ptr_metadata", issue = "81513")]
pub use metadata::{from_raw_parts, from_raw_parts_mut, metadata, DynMetadata, Pointee, Thin}; pub use metadata::{from_raw_parts, from_raw_parts_mut, metadata, DynMetadata, Pointee, Thin};
mod non_null; mod non_null;

4
library/core/src/ptr/mut_ptr.rs
View file

@ -51,8 +51,8 @@ impl<T: ?Sized> *mut T {
/// ///
/// The pointer can be later reconstructed with [`from_raw_parts_mut`]. /// The pointer can be later reconstructed with [`from_raw_parts_mut`].
#[cfg(not(bootstrap))] #[cfg(not(bootstrap))]
#[unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[unstable(feature = "ptr_metadata", issue = "81513")]
#[rustc_const_unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[rustc_const_unstable(feature = "ptr_metadata", issue = "81513")]
#[inline] #[inline]
pub const fn to_raw_parts(self) -> (*mut (), <T as super::Pointee>::Metadata) { pub const fn to_raw_parts(self) -> (*mut (), <T as super::Pointee>::Metadata) {
(self.cast(), super::metadata(self)) (self.cast(), super::metadata(self))

8
library/core/src/ptr/non_null.rs
View file

@ -182,8 +182,8 @@ impl<T: ?Sized> NonNull<T> {
/// ///
/// [`std::ptr::from_raw_parts`]: crate::ptr::from_raw_parts /// [`std::ptr::from_raw_parts`]: crate::ptr::from_raw_parts
#[cfg(not(bootstrap))] #[cfg(not(bootstrap))]
#[unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[unstable(feature = "ptr_metadata", issue = "81513")]
#[rustc_const_unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[rustc_const_unstable(feature = "ptr_metadata", issue = "81513")]
#[inline] #[inline]
pub const fn from_raw_parts( pub const fn from_raw_parts(
data_address: NonNull<()>, data_address: NonNull<()>,
@ -199,8 +199,8 @@ impl<T: ?Sized> NonNull<T> {
/// ///
/// The pointer can be later reconstructed with [`NonNull::from_raw_parts`]. /// The pointer can be later reconstructed with [`NonNull::from_raw_parts`].
#[cfg(not(bootstrap))] #[cfg(not(bootstrap))]
#[unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[unstable(feature = "ptr_metadata", issue = "81513")]
#[rustc_const_unstable(feature = "ptr_metadata", issue = /* FIXME */ "none")] #[rustc_const_unstable(feature = "ptr_metadata", issue = "81513")]
#[inline] #[inline]
pub const fn to_raw_parts(self) -> (NonNull<()>, <T as super::Pointee>::Metadata) { pub const fn to_raw_parts(self) -> (NonNull<()>, <T as super::Pointee>::Metadata) {
(self.cast(), super::metadata(self.as_ptr())) (self.cast(), super::metadata(self.as_ptr()))