diff options
| -rw-r--r-- | src/libcore/ptr/const_ptr.rs | 21 | ||||
| -rw-r--r-- | src/libcore/ptr/mut_ptr.rs | 21 |
2 files changed, 42 insertions, 0 deletions
diff --git a/src/libcore/ptr/const_ptr.rs b/src/libcore/ptr/const_ptr.rs index d1d7a715238..f926befb4b3 100644 --- a/src/libcore/ptr/const_ptr.rs +++ b/src/libcore/ptr/const_ptr.rs @@ -826,6 +826,27 @@ impl<T> *const [T] { // Only `std` can make this guarantee. unsafe { Repr { rust: self }.raw }.len } + + /// Returns a raw pointer to the slice's buffer. + /// + /// This is equivalent to casting `self` to `*const T`, but more type-safe. + /// + /// # Examples + /// + /// ```rust + /// #![feature(slice_ptr_ptr)] + /// + /// use std::ptr; + /// + /// let slice: *const [i8] = ptr::slice_from_raw_parts(ptr::null(), 3); + /// assert_eq!(slice.as_ptr(), 0 as *const i8); + /// ``` + #[inline] + #[unstable(feature = "slice_ptr_ptr", issue = "none")] + #[rustc_const_unstable(feature = "const_slice_ptr_ptr", issue = "none")] + pub const fn as_ptr(self) -> *const T { + self as *const T + } } // Equality for pointers diff --git a/src/libcore/ptr/mut_ptr.rs b/src/libcore/ptr/mut_ptr.rs index 7d4b6339b51..7fc4805c921 100644 --- a/src/libcore/ptr/mut_ptr.rs +++ b/src/libcore/ptr/mut_ptr.rs @@ -1028,6 +1028,27 @@ impl<T> *mut [T] { // Only `std` can make this guarantee. unsafe { Repr { rust_mut: self }.raw }.len } + + /// Returns a raw pointer to the slice's buffer. + /// + /// This is equivalent to casting `self` to `*mut T`, but more type-safe. + /// + /// # Examples + /// + /// ```rust + /// #![feature(slice_ptr_ptr)] + /// + /// use std::ptr; + /// + /// let slice: *mut [i8] = ptr::slice_from_raw_parts_mut(ptr::null_mut(), 3); + /// assert_eq!(slice.as_ptr(), 0 as *mut i8); + /// ``` + #[inline] + #[unstable(feature = "slice_ptr_ptr", issue = "none")] + #[rustc_const_unstable(feature = "const_slice_ptr_ptr", issue = "none")] + pub const fn as_ptr(self) -> *mut T { + self as *mut T + } } // Equality for pointers |