From d86516d91e643fd87eadf057096989ce454f4d81 Mon Sep 17 00:00:00 2001
From: Thomas de Zeeuw <thomasdezeeuw@gmail.com>
Date: Sun, 25 Aug 2019 13:06:49 +0200
Subject: [PATCH 1/2] Stabilise weak_ptr_eq

---
 src/liballoc/rc.rs   | 4 +---
 src/liballoc/sync.rs | 4 +---
 2 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/src/liballoc/rc.rs b/src/liballoc/rc.rs
index 2b222caf13f3d..1752c1342c856 100644
--- a/src/liballoc/rc.rs
+++ b/src/liballoc/rc.rs
@@ -1843,7 +1843,6 @@ impl<T: ?Sized> Weak<T> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(weak_ptr_eq)]
     /// use std::rc::Rc;
     ///
     /// let first_rc = Rc::new(5);
@@ -1861,7 +1860,6 @@ impl<T: ?Sized> Weak<T> {
     /// Comparing `Weak::new`.
     ///
     /// ```
-    /// #![feature(weak_ptr_eq)]
     /// use std::rc::{Rc, Weak};
     ///
     /// let first = Weak::new();
@@ -1873,7 +1871,7 @@ impl<T: ?Sized> Weak<T> {
     /// assert!(!first.ptr_eq(&third));
     /// ```
     #[inline]
-    #[unstable(feature = "weak_ptr_eq", issue = "55981")]
+    #[stable(feature = "weak_ptr_eq", since = "1.39.0")]
     pub fn ptr_eq(&self, other: &Self) -> bool {
         self.ptr.as_ptr() == other.ptr.as_ptr()
     }
diff --git a/src/liballoc/sync.rs b/src/liballoc/sync.rs
index 9ffc1673e5ab8..e89433d67bdd6 100644
--- a/src/liballoc/sync.rs
+++ b/src/liballoc/sync.rs
@@ -1562,7 +1562,6 @@ impl<T: ?Sized> Weak<T> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(weak_ptr_eq)]
     /// use std::sync::Arc;
     ///
     /// let first_rc = Arc::new(5);
@@ -1580,7 +1579,6 @@ impl<T: ?Sized> Weak<T> {
     /// Comparing `Weak::new`.
     ///
     /// ```
-    /// #![feature(weak_ptr_eq)]
     /// use std::sync::{Arc, Weak};
     ///
     /// let first = Weak::new();
@@ -1592,7 +1590,7 @@ impl<T: ?Sized> Weak<T> {
     /// assert!(!first.ptr_eq(&third));
     /// ```
     #[inline]
-    #[unstable(feature = "weak_ptr_eq", issue = "55981")]
+    #[stable(feature = "weak_ptr_eq", since = "1.39.0")]
     pub fn ptr_eq(&self, other: &Self) -> bool {
         self.ptr.as_ptr() == other.ptr.as_ptr()
     }

From 307804a00d191b6f15d1a1a5b98fbae5ea6593b0 Mon Sep 17 00:00:00 2001
From: Thomas de Zeeuw <thomasdezeeuw@gmail.com>
Date: Sun, 25 Aug 2019 13:02:45 +0200
Subject: [PATCH 2/2] Update {rc, sync}::Weak::ptr_eq doc about comparing
 Weak::new

---
 src/liballoc/rc.rs   | 5 +++--
 src/liballoc/sync.rs | 6 +++---
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/liballoc/rc.rs b/src/liballoc/rc.rs
index 1752c1342c856..a10f7c60031e0 100644
--- a/src/liballoc/rc.rs
+++ b/src/liballoc/rc.rs
@@ -1832,8 +1832,9 @@ impl<T: ?Sized> Weak<T> {
         }
     }
 
-    /// Returns `true` if the two `Weak`s point to the same value (not just values
-    /// that compare as equal).
+    /// Returns `true` if the two `Weak`s point to the same value (not just
+    /// values that compare as equal), or if both don't point to any value
+    /// (because they were created with `Weak::new()`).
     ///
     /// # Notes
     ///
diff --git a/src/liballoc/sync.rs b/src/liballoc/sync.rs
index e89433d67bdd6..716d750915e12 100644
--- a/src/liballoc/sync.rs
+++ b/src/liballoc/sync.rs
@@ -1550,15 +1550,15 @@ impl<T: ?Sized> Weak<T> {
         }
     }
 
-    /// Returns `true` if the two `Weak`s point to the same value (not just values
-    /// that compare as equal).
+    /// Returns `true` if the two `Weak`s point to the same value (not just
+    /// values that compare as equal), or if both don't point to any value
+    /// (because they were created with `Weak::new()`).
     ///
     /// # Notes
     ///
     /// Since this compares pointers it means that `Weak::new()` will equal each
     /// other, even though they don't point to any value.
     ///
-    ///
     /// # Examples
     ///
     /// ```