From 992cfc16839d701e17f0437585a44102e83d4d14 Mon Sep 17 00:00:00 2001
From: Yoshua Wuyts <2467194+yoshuawuyts@users.noreply.github.com>
Date: Thu, 30 Jun 2022 16:54:03 +0200
Subject: [PATCH] Stabilize `into_future`

---
 library/core/src/future/into_future.rs       | 18 +++++-------------
 library/core/src/future/mod.rs               |  2 +-
 src/test/ui/async-await/await-into-future.rs |  2 --
 3 files changed, 6 insertions(+), 16 deletions(-)

diff --git a/library/core/src/future/into_future.rs b/library/core/src/future/into_future.rs
index ad9e80e117f1e..649b433877222 100644
--- a/library/core/src/future/into_future.rs
+++ b/library/core/src/future/into_future.rs
@@ -13,8 +13,6 @@ use crate::future::Future;
 /// on all futures.
 ///
 /// ```no_run
-/// #![feature(into_future)]
-///
 /// use std::future::IntoFuture;
 ///
 /// # async fn foo() {
@@ -33,8 +31,6 @@ use crate::future::Future;
 /// multiple times before being `.await`ed.
 ///
 /// ```rust
-/// #![feature(into_future)]
-///
 /// use std::future::{ready, Ready, IntoFuture};
 ///
 /// /// Eventually multiply two numbers
@@ -91,8 +87,6 @@ use crate::future::Future;
 /// `IntoFuture::into_future` to obtain an instance of `Future`:
 ///
 /// ```rust
-/// #![feature(into_future)]
-///
 /// use std::future::IntoFuture;
 ///
 /// /// Convert the output of a future to a string.
@@ -104,14 +98,14 @@ use crate::future::Future;
 ///     format!("{:?}", fut.await)
 /// }
 /// ```
-#[unstable(feature = "into_future", issue = "67644")]
+#[stable(feature = "into_future", since = "1.64.0")]
 pub trait IntoFuture {
     /// The output that the future will produce on completion.
-    #[unstable(feature = "into_future", issue = "67644")]
+    #[stable(feature = "into_future", since = "1.64.0")]
     type Output;
 
     /// Which kind of future are we turning this into?
-    #[unstable(feature = "into_future", issue = "67644")]
+    #[stable(feature = "into_future", since = "1.64.0")]
     type IntoFuture: Future<Output = Self::Output>;
 
     /// Creates a future from a value.
@@ -121,8 +115,6 @@ pub trait IntoFuture {
     /// Basic usage:
     ///
     /// ```no_run
-    /// #![feature(into_future)]
-    ///
     /// use std::future::IntoFuture;
     ///
     /// # async fn foo() {
@@ -131,12 +123,12 @@ pub trait IntoFuture {
     /// assert_eq!("meow", fut.await);
     /// # }
     /// ```
-    #[unstable(feature = "into_future", issue = "67644")]
+    #[stable(feature = "into_future", since = "1.64.0")]
     #[lang = "into_future"]
     fn into_future(self) -> Self::IntoFuture;
 }
 
-#[unstable(feature = "into_future", issue = "67644")]
+#[stable(feature = "into_future", since = "1.64.0")]
 impl<F: Future> IntoFuture for F {
     type Output = F::Output;
     type IntoFuture = F;
diff --git a/library/core/src/future/mod.rs b/library/core/src/future/mod.rs
index 9b89f766c67bf..90eecb9d4a000 100644
--- a/library/core/src/future/mod.rs
+++ b/library/core/src/future/mod.rs
@@ -29,7 +29,7 @@ pub use self::future::Future;
 #[unstable(feature = "future_join", issue = "91642")]
 pub use self::join::join;
 
-#[unstable(feature = "into_future", issue = "67644")]
+#[stable(feature = "into_future", since = "1.64.0")]
 pub use into_future::IntoFuture;
 
 #[stable(feature = "future_readiness_fns", since = "1.48.0")]
diff --git a/src/test/ui/async-await/await-into-future.rs b/src/test/ui/async-await/await-into-future.rs
index 6e1b155e181ee..8bf1385b3c5cd 100644
--- a/src/test/ui/async-await/await-into-future.rs
+++ b/src/test/ui/async-await/await-into-future.rs
@@ -1,8 +1,6 @@
 // run-pass
 // aux-build: issue-72470-lib.rs
 // edition:2021
-#![feature(into_future)]
-
 extern crate issue_72470_lib;
 use std::{future::{Future, IntoFuture}, pin::Pin};