From 35f1de62f2ab87e39c4a058cb34668727e9a9c42 Mon Sep 17 00:00:00 2001
From: Chong Yidong
Date: Sun, 21 Nov 2010 13:16:19 -0500
Subject: * editfns.c (Fbyte_to_string): Signal an error if arg is not a byte.

---
 src/editfns.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/editfns.c')

diff --git a/src/editfns.c b/src/editfns.c
index ea279a462f2..910fd13aed4 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -222,12 +222,14 @@ usage: (char-to-string CHAR)  */)
 }
 
 DEFUN ("byte-to-string", Fbyte_to_string, Sbyte_to_string, 1, 1, 0,
-       doc: /* Convert arg BYTE to a string containing that byte.  */)
+       doc: /* Convert arg BYTE to a unibyte string containing that byte.  */)
      (byte)
      Lisp_Object byte;
 {
   unsigned char b;
   CHECK_NUMBER (byte);
+  if (XINT (byte) < 0 || XINT (byte) > 255)
+    error ("Invalid byte");
   b = XINT (byte);
   return make_string_from_bytes (&b, 1, 1);
 }
-- 
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