From: Chong Yidong <cyd@stupidchicken.com>
Date: Sun, 21 Nov 2010 18:16:19 +0000 (-0500)
Subject: * editfns.c (Fbyte_to_string): Signal an error if arg is not a byte.
X-Git-Tag: emacs-pretest-23.2.91~49^2~10
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=35f1de62f2ab87e39c4a058cb34668727e9a9c42;p=emacs.git

* editfns.c (Fbyte_to_string): Signal an error if arg is not a byte.
---

diff --git a/src/ChangeLog b/src/ChangeLog
index 4655ea714ad..f986c03cc14 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2010-11-21  Chong Yidong  <cyd@stupidchicken.com>
+
+	* editfns.c (Fbyte_to_string): Signal an error arg is not a byte.
+
 2010-11-20  Jan Djärv  <jan.h.d@swipnet.se>
 
 	* gtkutil.c (menubar_map_cb): New function (Bug#7425).
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);
 }