From ad54f4785976d04ec74cb7495d344519da1524bd Mon Sep 17 00:00:00 2001
From: Kouhei Sutou <kou@clear-code.com>
Date: Sun, 1 Mar 2015 23:37:41 +0900
Subject: [PATCH] mecab: add missing end check

---
 plugins/tokenizers/mecab.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/tokenizers/mecab.c b/plugins/tokenizers/mecab.c
index b48ea010ce..f58d064622 100644
--- a/plugins/tokenizers/mecab.c
+++ b/plugins/tokenizers/mecab.c
@@ -434,7 +434,7 @@ mecab_next(grn_ctx *ctx, int nargs, grn_obj **args, grn_user_data *user_data)
 
       if (space_len > 0) {
         const char *q = r + space_len;
-        while ((space_len = grn_isspace(q, encoding))) {
+        while (q < e && (space_len = grn_isspace(q, encoding))) {
           q += space_len;
         }
         tokenizer->next = q;