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Rollup merge of #84120 - workingjubilee:stabilize-duration-max, r=m-ou-se

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Stabilize Duration::MAX

Following the suggested direction from https://github.com/rust-lang/rust/issues/76416#issuecomment-817278338, this PR proposes that `Duration::MAX` should have been part of the `duration_saturating_ops` feature flag all along, having been

0. heavily referenced by that feature flag
1. an odd duck next to most of `duration_constants`, as I expressed in https://github.com/rust-lang/rust/issues/57391#issuecomment-717681193
2. introduced in #76114 which added `duration_saturating_ops`

and accordingly should be folded into `duration_saturating_ops` and therefore stabilized.

r? `@m-ou-se`
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Mara Bos 2021-04-26 21:06:46 +02:00 committed by GitHub
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10
library/core/src/time.rs
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@ -135,17 +135,21 @@ impl Duration {
/// The maximum duration.
///
/// It is roughly equal to a duration of 584,942,417,355 years.
/// May vary by platform as necessary. Must be able to contain the difference between
/// two instances of [`Instant`] or two instances of [`SystemTime`].
/// This constraint gives it a value of about 584,942,417,355 years in practice,
/// which is currently used on all platforms.
///
/// # Examples
///
/// ```
/// #![feature(duration_constants)]
/// use std::time::Duration;
///
/// assert_eq!(Duration::MAX, Duration::new(u64::MAX, 1_000_000_000 - 1));
/// ```
#[unstable(feature = "duration_constants", issue = "57391")]
/// [`Instant`]: ../../std/time/struct.Instant.html
/// [`SystemTime`]: ../../std/time/struct.SystemTime.html
#[stable(feature = "duration_saturating_ops", since = "1.53.0")]
pub const MAX: Duration = Duration::new(u64::MAX, NANOS_PER_SEC - 1);
/// Creates a new `Duration` from the specified number of whole seconds and