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impl RefUnwindSafe for Once

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David Tolnay 2021-12-20 11:49:47 -08:00
parent 8ad6e5fb67
commit 91161ed110
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1 changed files with 5 additions and 2 deletions
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7
library/std/src/sync/once.rs
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@ -90,7 +90,7 @@ mod tests;
use crate::cell::Cell;
use crate::fmt;
use crate::marker;
use crate::panic::UnwindSafe;
use crate::panic::{RefUnwindSafe, UnwindSafe};
use crate::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
use crate::thread::{self, Thread};
@ -124,9 +124,12 @@ unsafe impl Sync for Once {}
#[stable(feature = "rust1", since = "1.0.0")]
unsafe impl Send for Once {}
#[stable(feature = "sync_once_ref_unwind_safe", since = "1.59.0")]
#[stable(feature = "sync_once_unwind_safe", since = "1.59.0")]
impl UnwindSafe for Once {}
#[stable(feature = "sync_once_unwind_safe", since = "1.59.0")]
impl RefUnwindSafe for Once {}
/// State yielded to [`Once::call_once_force()`]’s closure parameter. The state
/// can be used to query the poison status of the [`Once`].
#[stable(feature = "once_poison", since = "1.51.0")]