From c13669e00b4ba3f353ea1cfa825aecb0bb765f9c Mon Sep 17 00:00:00 2001
From: Ian Douglas Scott <ian@iandouglasscott.com>
Date: Wed, 25 Jan 2023 17:15:59 -0800
Subject: [PATCH] Implement `AsFd` and `AsRawFd` for `Rc`

Fixes https://github.com/rust-lang/rust/issues/105931.
---
 library/std/src/os/fd/owned.rs | 8 ++++++++
 library/std/src/os/fd/raw.rs   | 8 ++++++++
 2 files changed, 16 insertions(+)

diff --git a/library/std/src/os/fd/owned.rs b/library/std/src/os/fd/owned.rs
index c41e093a7e5..439b8d52a2d 100644
--- a/library/std/src/os/fd/owned.rs
+++ b/library/std/src/os/fd/owned.rs
@@ -396,6 +396,14 @@ impl<T: AsFd> AsFd for crate::sync::Arc<T> {
     }
 }
 
+#[stable(feature = "asfd_rc", since = "CURRENT_RUSTC_VERSION")]
+impl<T: AsFd> AsFd for crate::rc::Rc<T> {
+    #[inline]
+    fn as_fd(&self) -> BorrowedFd<'_> {
+        (**self).as_fd()
+    }
+}
+
 #[stable(feature = "asfd_ptrs", since = "1.64.0")]
 impl<T: AsFd> AsFd for Box<T> {
     #[inline]
diff --git a/library/std/src/os/fd/raw.rs b/library/std/src/os/fd/raw.rs
index f92a0506670..c138162f1ab 100644
--- a/library/std/src/os/fd/raw.rs
+++ b/library/std/src/os/fd/raw.rs
@@ -244,6 +244,14 @@ impl<T: AsRawFd> AsRawFd for crate::sync::Arc<T> {
     }
 }
 
+#[stable(feature = "asfd_rc", since = "CURRENT_RUSTC_VERSION")]
+impl<T: AsRawFd> AsRawFd for crate::rc::Rc<T> {
+    #[inline]
+    fn as_raw_fd(&self) -> RawFd {
+        (**self).as_raw_fd()
+    }
+}
+
 #[stable(feature = "asrawfd_ptrs", since = "1.63.0")]
 impl<T: AsRawFd> AsRawFd for Box<T> {
     #[inline]