From 7415c66d8b3e2476aeea64c70ef376c12a39f175 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Mattias=20Engdeg=C3=A5rd?= <mattiase@acm.org>
Date: Fri, 29 Jan 2021 21:15:33 +0100
Subject: [PATCH] ; * src/process.c (child_signal_read): Don't report EAGAIN as
 error

---
 src/process.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/process.c b/src/process.c
index 1df4ed9ce03..3beb9cf7146 100644
--- a/src/process.c
+++ b/src/process.c
@@ -7217,7 +7217,7 @@ child_signal_read (int fd, void *data)
   eassert (0 <= fd);
   eassert (fd == child_signal_read_fd);
   char dummy;
-  if (emacs_read (fd, &dummy, 1) < 0)
+  if (emacs_read (fd, &dummy, 1) < 0 && errno != EAGAIN)
     emacs_perror ("reading from child signal FD");
 }
 #endif	/* !WINDOWSNT */
-- 
2.39.2