From 4c3f1baca99b437c071a2a2a43fd4ee1f36d2afe Mon Sep 17 00:00:00 2001
From: "bar@bar.mysql.r18.ru" <>
Date: Fri, 25 Apr 2003 16:27:16 +0500
Subject: [PATCH] ctype-tis620.c:   Don't allow access outside the string

---
 strings/ctype-tis620.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/strings/ctype-tis620.c b/strings/ctype-tis620.c
index d5181dc4db0..7628b425b65 100644
--- a/strings/ctype-tis620.c
+++ b/strings/ctype-tis620.c
@@ -492,7 +492,7 @@ static uchar* thai2sortable(const uchar * tstr,uint len)
   }
   pLeft4 = pRight4;*/
   while(len--) {
-    if(isldvowel(*p) && isconsnt(p[1])) {
+    if(isldvowel(*p) && len > 0 && isconsnt(p[1])) {
       *pRight1++ = t_ctype[p[1]][0];
       *pRight2++ = t_ctype[p[1]][1];
       *pRight3++ = t_ctype[p[1]][2];