From 0748d150ecff495c4abda3d24e5b814eeb77ee70 Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Thu, 8 Apr 1999 16:50:04 +0000
Subject: [PATCH] (Faccept_process_output): Check validity of PROCESS.

---
 src/process.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/process.c b/src/process.c
index 7bd40ad685e..e210cd4aa2a 100644
--- a/src/process.c
+++ b/src/process.c
@@ -2157,6 +2157,9 @@ Return non-nil iff we received any output before the timeout expired.")
   int seconds;
   int useconds;
 
+  if (! NILP (process))
+    CHECK_PROCESS (process, 0);
+
   if (! NILP (timeout_msecs))
     {
       CHECK_NUMBER (timeout_msecs, 2);
-- 
2.39.2