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nit: go directly from alignment to usize #9666

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nit: go directly from alignment to usize #9666

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5 changes: 2 additions & 3 deletions vortex-buffer/src/buffer.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -36,10 +36,9 @@ pub struct Buffer<T> {
/// valid alignment without allocating. A zero-length slice never reads memory, so it may use a
/// dangling pointer as long as it is non-null and aligned.
const EMPTY_BACKING: &[u8] = {
let addr = 1usize << (usize::BITS - 1);
assert!(Alignment::MAX.is_offset_aligned(addr));
let ptr = std::ptr::without_provenance(Alignment::MAX.as_nonzero_usize());
// SAFETY: the pointer is non-null and aligned, and the slice is zero-length.
unsafe { std::slice::from_raw_parts(std::ptr::without_provenance(addr), 0) }
unsafe { std::slice::from_raw_parts(ptr, 0) }
};

impl<T> Default for Buffer<T> {
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