From 7a842ef77c057a64ccda5ed71765d50658442747 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stephan=20A=C3=9Fmus?= <superstippi@gmx.de>
Date: Mon, 5 Oct 2009 12:46:26 +0000
Subject: [PATCH] Check negative out-of-bounds index in BTextView::OffsetAt().
 According to #4707, this is the BeOS behavior. I have not checked myself and
 the BeBook is very brief on this, but similar methods do trim indices to be
 in range. Another alternative would be returning an index indicating an error
 (-1).

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33439 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/kits/interface/TextView.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/kits/interface/TextView.cpp b/src/kits/interface/TextView.cpp
index 37c4a75077..1c44d67081 100644
--- a/src/kits/interface/TextView.cpp
+++ b/src/kits/interface/TextView.cpp
@@ -1913,6 +1913,8 @@ BTextView::OffsetAt(BPoint point) const
 int32
 BTextView::OffsetAt(int32 line) const
 {
+	if (line < 0)
+		return 0;
 	if (line > fLines->NumLines())
 		return fText->Length();