From b8af0d1cfd4f0ee3969757464f4160248647a36e Mon Sep 17 00:00:00 2001
From: Tommaso Cucinotta <tommaso@lyx.org>
Date: Tue, 2 Feb 2010 20:36:12 +0000
Subject: [PATCH] Fixed crash on searching for empty list inside empty list
 with ignore-format off (bug #6500).

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@33318 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/lyxfind.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/lyxfind.cpp b/src/lyxfind.cpp
index fb35386899..0bfe8ef958 100644
--- a/src/lyxfind.cpp
+++ b/src/lyxfind.cpp
@@ -946,6 +946,8 @@ int findAdvFinalize(DocIterator & cur, MatchStringAdv const & match)
 
 	// Compute the match length
 	int len = 1;
+	if (cur.pos() + len > cur.lastpos())
+		return 0;
 	LYXERR(Debug::FIND, "verifying unmatch with len = " << len);
 	while (cur.pos() + len <= cur.lastpos() && match(cur, len) == 0) {
 		++len;
-- 
2.39.5