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From: Takashi Yano <tyan0@sourceware.org>
To: cygwin-cvs@sourceware.org
Subject: [newlib-cygwin/cygwin-3_3-branch] Cygwin: pty: Add missing
 attach_mutex guard.
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https://sourceware.org/git/gitweb.cgi?p=3Dnewlib-cygwin.git;h=3D7b0d2d1e92f=
60524b8d93a02282c7d4e9021e9b6

commit 7b0d2d1e92f60524b8d93a02282c7d4e9021e9b6
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date:   Mon May 9 00:54:35 2022 +0900

    Cygwin: pty: Add missing attach_mutex guard.

Diff:
---
 winsup/cygwin/fhandler_tty.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
index 31f399f99..0cd69f3ca 100644
--- a/winsup/cygwin/fhandler_tty.cc
+++ b/winsup/cygwin/fhandler_tty.cc
@@ -3497,6 +3497,7 @@ skip_create:
       HeapFree (GetProcessHeap (), 0, hp);
     }
=20
+  acquire_attach_mutex (mutex_timeout);
   if (get_ttyp ()->previous_code_page)
     SetConsoleCP (get_ttyp ()->previous_code_page);
   if (get_ttyp ()->previous_output_code_page)
@@ -3527,6 +3528,7 @@ skip_create:
 	mode |=3D DISABLE_NEWLINE_AUTO_RETURN;
       SetConsoleMode (hpConOut, mode);
     }
+  release_attach_mutex ();
=20
   return true;