From: Kenichi Handa <handa@m17n.org>
Date: Mon, 16 Nov 1998 06:26:27 +0000 (+0000)
Subject: (CHAR_TABLE_REF): Check if IDX is negative or not.
X-Git-Tag: emacs-20.4~1228
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=6185c1c05b28d5ba2e4b082e96de98d325a609d0;p=emacs.git

(CHAR_TABLE_REF): Check if IDX is negative or not.
---

diff --git a/src/lisp.h b/src/lisp.h
index 7f83269c88e..9b533f528ed 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -641,7 +641,7 @@ struct Lisp_Vector
    and 8-bit Europeans characters.  For these characters, do not check
    validity of CT.  Do not follow parent.  */
 #define CHAR_TABLE_REF(CT, IDX)				\
-  ((IDX) < CHAR_TABLE_SINGLE_BYTE_SLOTS			\
+  ((IDX) >= 0 && (IDX) < CHAR_TABLE_SINGLE_BYTE_SLOTS	\
    ? (!NILP (XCHAR_TABLE (CT)->contents[IDX])		\
       ? XCHAR_TABLE (CT)->contents[IDX]			\
       : XCHAR_TABLE (CT)->defalt)			\