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From: Takashi Yano <tyan0@sourceware.org>
To: cygwin-cvs@sourceware.org
Subject: [newlib-cygwin] Cygwin: pipe: Handle WAIT_CANCELED when waiting
 read_mtx.
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https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=c6f0a46d715d46a0716a505d728ff08e7c5b156a

commit c6f0a46d715d46a0716a505d728ff08e7c5b156a
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date:   Wed Nov 10 12:24:53 2021 +0900

    Cygwin: pipe: Handle WAIT_CANCELED when waiting read_mtx.
    
    - Add missing handling for WAIT_CANCELED in cygwait() for read_mtx
      in raw_read().

Diff:
---
 winsup/cygwin/fhandler_pipe.cc | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/winsup/cygwin/fhandler_pipe.cc b/winsup/cygwin/fhandler_pipe.cc
index bc06d157c..13731437e 100644
--- a/winsup/cygwin/fhandler_pipe.cc
+++ b/winsup/cygwin/fhandler_pipe.cc
@@ -302,10 +302,18 @@ fhandler_pipe::raw_read (void *ptr, size_t& len)
       set_errno (EAGAIN);
       len = (size_t) -1;
       return;
-    default:
+    case WAIT_SIGNALED:
       set_errno (EINTR);
       len = (size_t) -1;
       return;
+    case WAIT_CANCELED:
+      pthread::static_cancel_self ();
+      /* NOTREACHED */
+    default:
+      /* Should not reach here. */
+      __seterrno ();
+      len = (size_t) -1;
+      return;
     }
   while (nbytes < len)
     {