From 5c77e5723a79ec709813db6d7c87aee7e86c46ed Mon Sep 17 00:00:00 2001
From: auronandace <auronandace@googlemail.com>
Date: Sun, 8 Mar 2026 14:50:31 +0000
Subject: [PATCH] mark enum as non-exhaustive

---
 src/io/error.rs | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/src/io/error.rs b/src/io/error.rs
index 5c5c582eed..f72eb42c24 100644
--- a/src/io/error.rs
+++ b/src/io/error.rs
@@ -220,6 +220,7 @@ struct Custom {
 /// [`io::Error`]: struct.Error.html
 #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
 #[allow(deprecated)]
+#[non_exhaustive]
 pub enum ErrorKind {
     /// An entity was not found, often a file.
     NotFound,
@@ -285,11 +286,6 @@ pub enum ErrorKind {
     /// particular number of bytes but only a smaller number of bytes could be
     /// read.
     UnexpectedEof,
-
-    /// A marker variant that tells the compiler that users of this enum cannot
-    /// match it exhaustively.
-    #[doc(hidden)]
-    __Nonexhaustive,
 }
 
 impl ErrorKind {
@@ -313,7 +309,6 @@ impl ErrorKind {
             ErrorKind::Interrupted => "operation interrupted",
             ErrorKind::Other => "other os error",
             ErrorKind::UnexpectedEof => "unexpected end of file",
-            _ => "unknown error",
         }
     }
 }