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Clarify that align_offset overaligns #145931

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Clarify that align_offset overaligns #145931

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5 changes: 2 additions & 3 deletions library/core/src/ptr/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2166,10 +2166,9 @@ pub unsafe fn write_volatile<T>(dst: *mut T, src: T) {
}
}

/// Align pointer `p`.
/// Calculate an element-offset that increases a pointer's alignment.
///
/// Calculate offset (in terms of elements of `size_of::<T>()` stride) that has to be applied
/// to pointer `p` so that pointer `p` would get aligned to `a`.
/// Calculate an element-offset (not byte-offset) that when added to a given pointer `p`, increases `p`'s alignment to at least the given alignment `a`.
///
/// # Safety
/// `a` must be a power of two.
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