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Auto merge of #105127 - Sp00ph:const_new, r=dtolnay

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Make `VecDeque::new` const

(See #105072)
This commit is contained in:
bors 2022-12-20 20:25:42 +00:00
commit 1d12c3cea3
1 changed files with 4 additions and 3 deletions
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7
library/alloc/src/collections/vec_deque/mod.rs
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@ -535,12 +535,13 @@ impl<T> VecDeque<T> {
///
/// let deque: VecDeque<u32> = VecDeque::new();
/// ```
// FIXME: This should probably be const
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_stable(feature = "const_vec_deque_new", since = "CURRENT_RUSTC_VERSION")]
#[must_use]
pub fn new() -> VecDeque<T> {
VecDeque::new_in(Global)
pub const fn new() -> VecDeque<T> {
// FIXME: This should just be `VecDeque::new_in(Global)` once that hits stable.
VecDeque { head: 0, len: 0, buf: RawVec::NEW }
}
/// Creates an empty deque with space for at least `capacity` elements.