Prevent negative array index in process_textarea()

Bug-Debian: https://github.com/tats/w3m/issues/58
2016-12-05 01:31:30 +09:00
parent f34c37f315
commit d7f55d5959
1 changed files with 1 additions and 1 deletions
@@ -4012,7 +4012,7 @@ process_textarea(struct parsed_tag *tag, int width)
    cur_textarea_size = 20;
    if (parsedtag_get_value(tag, ATTR_COLS, &p)) {
 	cur_textarea_size = atoi(p);
-	if (p[strlen(p) - 1] == '%')
+	if (strlen(p) > 0 && p[strlen(p) - 1] == '%')
 	    cur_textarea_size = width * cur_textarea_size / 100 - 2;
 	if (cur_textarea_size <= 0) {
 	    cur_textarea_size = 20;