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Make pointer::byte_offset_from more generic #103489

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Merged
merged 1 commit into from
Nov 16, 2022
Merged

Make pointer::byte_offset_from more generic #103489

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2 changes: 1 addition & 1 deletion library/core/src/ptr/const_ptr.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -684,7 +684,7 @@ impl<T: ?Sized> *const T {
#[unstable(feature = "pointer_byte_offsets", issue = "96283")]
#[rustc_const_unstable(feature = "const_pointer_byte_offsets", issue = "96283")]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
pub const unsafe fn byte_offset_from(self, origin: *const T) -> isize {
pub const unsafe fn byte_offset_from<U: ?Sized>(self, origin: *const U) -> isize {
// SAFETY: the caller must uphold the safety contract for `offset_from`.
unsafe { self.cast::<u8>().offset_from(origin.cast::<u8>()) }
}
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2 changes: 1 addition & 1 deletion library/core/src/ptr/mut_ptr.rs
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Expand Up @@ -861,7 +861,7 @@ impl<T: ?Sized> *mut T {
#[unstable(feature = "pointer_byte_offsets", issue = "96283")]
#[rustc_const_unstable(feature = "const_pointer_byte_offsets", issue = "96283")]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
pub const unsafe fn byte_offset_from(self, origin: *const T) -> isize {
pub const unsafe fn byte_offset_from<U: ?Sized>(self, origin: *const U) -> isize {
// SAFETY: the caller must uphold the safety contract for `offset_from`.
unsafe { self.cast::<u8>().offset_from(origin.cast::<u8>()) }
}
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