From 6992a868c3d642d0678be436366af0db17e93bd1 Mon Sep 17 00:00:00 2001
From: Eli Zaretskii <eliz@gnu.org>
Date: Sat, 12 Jun 2004 10:32:44 +0000
Subject: [PATCH] (Fdefun): Signal an error if NAME is not a symbol.

---
 src/eval.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/eval.c b/src/eval.c
index e1da1def446..096755f9c77 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -617,6 +617,7 @@ usage: (defun NAME ARGLIST [DOCSTRING] BODY...)  */)
   register Lisp_Object defn;
 
   fn_name = Fcar (args);
+  CHECK_SYMBOL (fn_name);
   defn = Fcons (Qlambda, Fcdr (args));
   if (!NILP (Vpurify_flag))
     defn = Fpurecopy (defn);
-- 
2.39.5