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Add #[must_use] to core and std constructors

This commit is contained in:
John Kugelman 2021-10-10 02:44:26 -04:00
parent 6928fafe06
commit 5b5c12be1c
21 changed files with 36 additions and 0 deletions

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@ -80,6 +80,7 @@ impl Barrier {
/// let barrier = Barrier::new(10);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
#[must_use]
pub fn new(n: usize) -> Barrier {
Barrier {
lock: Mutex::new(BarrierState { count: 0, generation_id: 0 }),

View file

@ -121,6 +121,7 @@ impl Condvar {
/// let condvar = Condvar::new();
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
#[must_use]
pub fn new() -> Condvar {
Condvar { inner: sys::Condvar::new() }
}

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@ -186,6 +186,7 @@ impl Once {
#[inline]
#[stable(feature = "once_new", since = "1.2.0")]
#[rustc_const_stable(feature = "const_once_new", since = "1.32.0")]
#[must_use]
pub const fn new() -> Once {
Once { state_and_queue: AtomicUsize::new(INCOMPLETE), _marker: marker::PhantomData }
}