From 6667f1bfcd5ba036663587b8ec9ce7ce0f38e498 Mon Sep 17 00:00:00 2001
From: Olivier ROLAND <newca12@users.noreply.github.com>
Date: Tue, 24 Oct 2023 18:49:03 +0200
Subject: [PATCH] Fix infinite loop caused by invalid UTF-8 bytes

---
 futures-util/src/io/read_line.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/futures-util/src/io/read_line.rs b/futures-util/src/io/read_line.rs
index e1b8fc9455..df782c9570 100644
--- a/futures-util/src/io/read_line.rs
+++ b/futures-util/src/io/read_line.rs
@@ -35,6 +35,7 @@ pub(super) fn read_line_internal<R: AsyncBufRead + ?Sized>(
 ) -> Poll<io::Result<usize>> {
     let ret = ready!(read_until_internal(reader, cx, b'\n', bytes, read));
     if str::from_utf8(bytes).is_err() {
+        bytes.clear();
         Poll::Ready(ret.and_then(|_| {
             Err(io::Error::new(io::ErrorKind::InvalidData, "stream did not contain valid UTF-8"))
         }))