From b38c3fe8632ec0ee4f180dae2938959bd8b4c46e Mon Sep 17 00:00:00 2001
From: Lars Ingebrigtsen <larsi@gnus.org>
Date: Sun, 17 Apr 2022 15:00:00 +0200
Subject: [PATCH] Check whether we can restart in Fkill_emacs

* src/emacs.c (Fkill_emacs): Report an error if we can't restart.
---
 src/emacs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/emacs.c b/src/emacs.c
index 50b1628d207..173e8e8923d 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -2807,7 +2807,8 @@ killed.  */
 
   if (!NILP (restart))
     {
-      execvp (*initial_argv, initial_argv);
+      if (execvp (*initial_argv, initial_argv) < 1)
+	error ("Unable to re-execute Emacs");
     }
 
   if (FIXNUMP (arg))
-- 
2.39.2