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Rollup merge of #136359 - hkBst:ptr_copy_docs, r=Amanieu

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doc all differences of ptr:copy(_nonoverlapping) with memcpy and memmove

Fixes #79430
This commit is contained in:
Jacob Pratt
2025-03-16 21:47:42 -04:00
committed by GitHub
parent c7700406f4 8156e062ee
commit feb6cb4132
1 changed files with 6 additions and 3 deletions
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library/core/src/intrinsics/mod.rs
+6 -3
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@@ -3641,7 +3641,8 @@ impl<P: ?Sized, T: ptr::Thin> AggregateRawPtr<*mut T> for *mut P {
/// For regions of memory which might overlap, use [`copy`] instead.
///
/// `copy_nonoverlapping` is semantically equivalent to C's [`memcpy`], but
/// with the argument order swapped.
/// with the source and destination arguments swapped,
/// and `count` counting the number of `T`s instead of bytes.
///
/// The copy is "untyped" in the sense that data may be uninitialized or otherwise violate the
/// requirements of `T`. The initialization state is preserved exactly.
@@ -3761,8 +3762,10 @@ impl<P: ?Sized, T: ptr::Thin> AggregateRawPtr<*mut T> for *mut P {
/// If the source and destination will *never* overlap,
/// [`copy_nonoverlapping`] can be used instead.
///
/// `copy` is semantically equivalent to C's [`memmove`], but with the argument
/// order swapped. Copying takes place as if the bytes were copied from `src`
/// `copy` is semantically equivalent to C's [`memmove`], but
/// with the source and destination arguments swapped,
/// and `count` counting the number of `T`s instead of bytes.
/// Copying takes place as if the bytes were copied from `src`
/// to a temporary array and then copied from the array to `dst`.
///
/// The copy is "untyped" in the sense that data may be uninitialized or otherwise violate the