From: Richard M. Stallman <rms@gnu.org>
Date: Sat, 15 Aug 1998 05:53:00 +0000 (+0000)
Subject: (wait_reading_process_input): If a pty gives EIO,
X-Git-Tag: emacs-20.3~44
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=5651af6d63e449c3e463dcb4c00766c2cf230c30;p=emacs.git

(wait_reading_process_input): If a pty gives EIO,
raise SIGCHLD just in case.
---

diff --git a/src/process.c b/src/process.c
index 2ca75250706..0e5ae9e3fe2 100644
--- a/src/process.c
+++ b/src/process.c
@@ -2676,9 +2676,13 @@ wait_reading_process_input (time_limit, microsecs, read_kbd, do_display)
 		 Therefore, if we get an error reading and errno =
 		 EIO, just continue, because the child process has
 		 exited and should clean itself up soon (e.g. when we
-		 get a SIGCHLD). */
+		 get a SIGCHLD).
+
+		 However, it has been known to happen that the SIGCHLD
+		 got lost.  So raise the signl again just in case.
+		 It can't hurt.  */
 	      else if (nread == -1 && errno == EIO)
-		;
+		kill (getpid (), SIGCHLD);
 #endif				/* HAVE_PTYS */
 	      /* If we can detect process termination, don't consider the process
 		 gone just because its pipe is closed.  */