From 8cbe25f87bee3c6da2afdfee2069f80f803df9e6 Mon Sep 17 00:00:00 2001
From: Zac Harrold <zac@harrold.com.au>
Date: Wed, 12 Aug 2026 09:24:21 +1000
Subject: [PATCH] Stabilize `Write for Cursor<W: WriteThroughCursor>`

Was already stable when using explicit types (e.g. `Vec<u8>`). `WriteThroughCursor` is still unstable/hidden.
---
 library/core/src/io/cursor.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/library/core/src/io/cursor.rs b/library/core/src/io/cursor.rs
index fe4def531a84a..704900f9c590e 100644
--- a/library/core/src/io/cursor.rs
+++ b/library/core/src/io/cursor.rs
@@ -486,6 +486,7 @@ pub trait WriteThroughCursor: Sized {
 }
 
 #[doc(hidden)]
+#[stable(feature = "rust1", since = "1.0.0")]
 impl<W: WriteThroughCursor> Write for Cursor<W> {
     #[inline]
     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {