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Rollup merge of #103359 - WaffleLapkin:drain_no_mut_qqq, r=scottmcm

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Remove incorrect comment in `Vec::drain`

r? ``@scottmcm``

Turns out this comment wasn't correct for 6 years, since #34951, which switched from using `slice::IterMut` into using `slice::Iter`.
This commit is contained in:
Matthias Krüger 2022-10-22 00:14:03 +02:00 committed by GitHub
commit 1b2f594f48
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1 changed files with 1 additions and 3 deletions
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library/alloc/src/vec/mod.rs
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@ -1999,9 +1999,7 @@ impl<T, A: Allocator> Vec<T, A> {
unsafe { unsafe {
// set self.vec length's to start, to be safe in case Drain is leaked // set self.vec length's to start, to be safe in case Drain is leaked
self.set_len(start); self.set_len(start);
// Use the borrow in the IterMut to indicate borrowing behavior of the let range_slice = slice::from_raw_parts(self.as_ptr().add(start), end - start);
// whole Drain iterator (like &mut T).
let range_slice = slice::from_raw_parts_mut(self.as_mut_ptr().add(start), end - start);
Drain { Drain {
tail_start: end, tail_start: end,
tail_len: len - end, tail_len: len - end,