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Add #[must_use] to MaybeUninit::new #89769

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Merged
bors merged 2 commits into from
Oct 12, 2021
Merged

Add #[must_use] to MaybeUninit::new #89769

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3ac0ae2
Add #[must_use] to MaybeUninit::new
jkugelman Oct 11, 2021
b0b09f0
Update library/core/src/mem/maybe_uninit.rs
jkugelman Oct 11, 2021
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1 change: 1 addition & 0 deletions library/core/src/mem/maybe_uninit.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -291,6 +291,7 @@ impl<T> MaybeUninit<T> {
/// [`assume_init`]: MaybeUninit::assume_init
#[stable(feature = "maybe_uninit", since = "1.36.0")]
#[rustc_const_stable(feature = "const_maybe_uninit", since = "1.36.0")]
#[must_use = "use `ManuallyDrop` or `forget` to avoid running drop code"]
#[inline(always)]
pub const fn new(val: T) -> MaybeUninit<T> {
MaybeUninit { value: ManuallyDrop::new(val) }
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