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Rollup merge of #76388 - poliorcetics:system-time-document-panic, r=KodrAus

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Add a note about the panic behavior of math operations on time objects

Fixes #71226.
This commit is contained in:
Yuki Okushi 2020-10-06 16:25:53 +09:00 committed by GitHub
commit 59476e9e57
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10
library/std/src/time.rs
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@ -100,6 +100,11 @@ pub use core::time::Duration;
/// [clock_time_get (Monotonic Clock)]: https://nuxi.nl/cloudabi/#clock_time_get
///
/// **Disclaimer:** These system calls might change over time.
///
/// > Note: mathematical operations like [`add`] may panic if the underlying
/// > structure cannot represent the new point in time.
///
/// [`add`]: Instant::add
#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[stable(feature = "time2", since = "1.8.0")]
pub struct Instant(time::Instant);
@ -174,6 +179,11 @@ pub struct Instant(time::Instant);
/// [GetSystemTimeAsFileTime]: https://docs.microsoft.com/en-us/windows/win32/api/sysinfoapi/nf-sysinfoapi-getsystemtimeasfiletime
///
/// **Disclaimer:** These system calls might change over time.
///
/// > Note: mathematical operations like [`add`] may panic if the underlying
/// > structure cannot represent the new point in time.
///
/// [`add`]: SystemTime::add
#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[stable(feature = "time2", since = "1.8.0")]
pub struct SystemTime(time::SystemTime);