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Clarify BTree range_search comments #81312

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Merged
merged 2 commits into from
Mar 18, 2021
Merged

Clarify BTree range_search comments #81312

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922ccac
Clarify BTree range searching comments
dylni Mar 15, 2021
35a2096
Fix comments based on review
dylni Mar 17, 2021
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5 changes: 2 additions & 3 deletions library/alloc/src/collections/btree/search.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -94,9 +94,8 @@ impl<BorrowType: marker::BorrowType, K, V> NodeRef<BorrowType, K, V, marker::Lea
K: Borrow<Q>,
R: RangeBounds<Q>,
{
// WARNING: Inlining these variables would be unsound (#81138)
// We assume the bounds reported by `range` remain the same, but
// an adversarial implementation could change between calls
// Inlining these variables should be avoided. We assume the bounds reported by `range`
// remain the same, but an adversarial implementation could change between calls (#81138).
let (start, end) = (range.start_bound(), range.end_bound());
match (start, end) {
(Bound::Excluded(s), Bound::Excluded(e)) if s == e => {
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