From dfea11d6206be57feca5283c67c17b9c3ee12960 Mon Sep 17 00:00:00 2001
From: Scott McMurray <scottmcm@users.noreply.github.com>
Date: Mon, 19 Aug 2024 22:39:04 -0700
Subject: [PATCH] Stabilize `iter::repeat_n`

---
 library/alloc/src/lib.rs                  |  1 -
 library/core/src/iter/mod.rs              |  2 +-
 library/core/src/iter/sources.rs          |  2 +-
 library/core/src/iter/sources/repeat_n.rs | 18 ++++++++----------
 library/core/tests/lib.rs                 |  1 -
 5 files changed, 10 insertions(+), 14 deletions(-)

diff --git a/library/alloc/src/lib.rs b/library/alloc/src/lib.rs
index 3e44adf73f045..5e4b08df6cb55 100644
--- a/library/alloc/src/lib.rs
+++ b/library/alloc/src/lib.rs
@@ -131,7 +131,6 @@
 #![feature(inplace_iteration)]
 #![feature(iter_advance_by)]
 #![feature(iter_next_chunk)]
-#![feature(iter_repeat_n)]
 #![feature(layout_for_ptr)]
 #![feature(local_waker)]
 #![feature(maybe_uninit_slice)]
diff --git a/library/core/src/iter/mod.rs b/library/core/src/iter/mod.rs
index 1f2bf49d2b729..5dad9e1a75ed6 100644
--- a/library/core/src/iter/mod.rs
+++ b/library/core/src/iter/mod.rs
@@ -436,7 +436,7 @@ pub use self::sources::{once, Once};
 pub use self::sources::{once_with, OnceWith};
 #[stable(feature = "rust1", since = "1.0.0")]
 pub use self::sources::{repeat, Repeat};
-#[unstable(feature = "iter_repeat_n", issue = "104434")]
+#[stable(feature = "iter_repeat_n", since = "CURRENT_RUSTC_VERSION")]
 pub use self::sources::{repeat_n, RepeatN};
 #[stable(feature = "iterator_repeat_with", since = "1.28.0")]
 pub use self::sources::{repeat_with, RepeatWith};
diff --git a/library/core/src/iter/sources.rs b/library/core/src/iter/sources.rs
index 6a94051b7c7b8..55901e1e50b42 100644
--- a/library/core/src/iter/sources.rs
+++ b/library/core/src/iter/sources.rs
@@ -24,7 +24,7 @@ pub use self::once::{once, Once};
 pub use self::once_with::{once_with, OnceWith};
 #[stable(feature = "rust1", since = "1.0.0")]
 pub use self::repeat::{repeat, Repeat};
-#[unstable(feature = "iter_repeat_n", issue = "104434")]
+#[stable(feature = "iter_repeat_n", since = "CURRENT_RUSTC_VERSION")]
 pub use self::repeat_n::{repeat_n, RepeatN};
 #[stable(feature = "iterator_repeat_with", since = "1.28.0")]
 pub use self::repeat_with::{repeat_with, RepeatWith};
diff --git a/library/core/src/iter/sources/repeat_n.rs b/library/core/src/iter/sources/repeat_n.rs
index 4c4ae39f836ca..2e247a34075c4 100644
--- a/library/core/src/iter/sources/repeat_n.rs
+++ b/library/core/src/iter/sources/repeat_n.rs
@@ -18,7 +18,6 @@ use crate::num::NonZero;
 /// Basic usage:
 ///
 /// ```
-/// #![feature(iter_repeat_n)]
 /// use std::iter;
 ///
 /// // four of the number four:
@@ -36,7 +35,6 @@ use crate::num::NonZero;
 /// For non-`Copy` types,
 ///
 /// ```
-/// #![feature(iter_repeat_n)]
 /// use std::iter;
 ///
 /// let v: Vec<i32> = Vec::with_capacity(123);
@@ -58,7 +56,7 @@ use crate::num::NonZero;
 /// assert_eq!(None, it.next());
 /// ```
 #[inline]
-#[unstable(feature = "iter_repeat_n", issue = "104434")]
+#[stable(feature = "iter_repeat_n", since = "CURRENT_RUSTC_VERSION")]
 pub fn repeat_n<T: Clone>(element: T, count: usize) -> RepeatN<T> {
     let mut element = ManuallyDrop::new(element);
 
@@ -77,7 +75,7 @@ pub fn repeat_n<T: Clone>(element: T, count: usize) -> RepeatN<T> {
 /// This `struct` is created by the [`repeat_n()`] function.
 /// See its documentation for more.
 #[derive(Clone, Debug)]
-#[unstable(feature = "iter_repeat_n", issue = "104434")]
+#[stable(feature = "iter_repeat_n", since = "CURRENT_RUSTC_VERSION")]
 pub struct RepeatN<A> {
     count: usize,
     // Invariant: has been dropped iff count == 0.
@@ -101,14 +99,14 @@ impl<A> RepeatN<A> {
     }
 }
 
-#[unstable(feature = "iter_repeat_n", issue = "104434")]
+#[stable(feature = "iter_repeat_n", since = "CURRENT_RUSTC_VERSION")]
 impl<A> Drop for RepeatN<A> {
     fn drop(&mut self) {
         self.take_element();
     }
 }
 
-#[unstable(feature = "iter_repeat_n", issue = "104434")]
+#[stable(feature = "iter_repeat_n", since = "CURRENT_RUSTC_VERSION")]
 impl<A: Clone> Iterator for RepeatN<A> {
     type Item = A;
 
@@ -156,14 +154,14 @@ impl<A: Clone> Iterator for RepeatN<A> {
     }
 }
 
-#[unstable(feature = "iter_repeat_n", issue = "104434")]
+#[stable(feature = "iter_repeat_n", since = "CURRENT_RUSTC_VERSION")]
 impl<A: Clone> ExactSizeIterator for RepeatN<A> {
     fn len(&self) -> usize {
         self.count
     }
 }
 
-#[unstable(feature = "iter_repeat_n", issue = "104434")]
+#[stable(feature = "iter_repeat_n", since = "CURRENT_RUSTC_VERSION")]
 impl<A: Clone> DoubleEndedIterator for RepeatN<A> {
     #[inline]
     fn next_back(&mut self) -> Option<A> {
@@ -181,12 +179,12 @@ impl<A: Clone> DoubleEndedIterator for RepeatN<A> {
     }
 }
 
-#[unstable(feature = "iter_repeat_n", issue = "104434")]
+#[stable(feature = "iter_repeat_n", since = "CURRENT_RUSTC_VERSION")]
 impl<A: Clone> FusedIterator for RepeatN<A> {}
 
 #[unstable(feature = "trusted_len", issue = "37572")]
 unsafe impl<A: Clone> TrustedLen for RepeatN<A> {}
-#[unstable(feature = "trusted_len_next_unchecked", issue = "37572")]
+#[stable(feature = "iter_repeat_n", since = "CURRENT_RUSTC_VERSION")]
 impl<A: Clone> UncheckedIterator for RepeatN<A> {
     #[inline]
     unsafe fn next_unchecked(&mut self) -> Self::Item {
diff --git a/library/core/tests/lib.rs b/library/core/tests/lib.rs
index 8872b4cbfd5ba..2f0d03abed3cd 100644
--- a/library/core/tests/lib.rs
+++ b/library/core/tests/lib.rs
@@ -73,7 +73,6 @@
 #![feature(iter_next_chunk)]
 #![feature(iter_order_by)]
 #![feature(iter_partition_in_place)]
-#![feature(iter_repeat_n)]
 #![feature(iterator_try_collect)]
 #![feature(iterator_try_reduce)]
 #![feature(layout_for_ptr)]