From a9bc3e688b7769481d53839dfe0a082a58fc75ed Mon Sep 17 00:00:00 2001
From: Abdelrazak Younes <younes@lyx.org>
Date: Mon, 1 Jan 2007 09:31:43 +0000
Subject: [PATCH] Fix crash when scrolling up using the arrow keys.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@16450 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/text2.C | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/text2.C b/src/text2.C
index c41a9c4c1e..26c85f3b1c 100644
--- a/src/text2.C
+++ b/src/text2.C
@@ -757,7 +757,12 @@ pos_type LyXText::getColumnNearX(BufferView const & bv, int right_margin,
 {
 	Buffer const & buffer = *bv.buffer();
 	TextMetrics const & tm = bv.textMetrics(this);
-	int const xo = bv.coordCache().get(this, pit).x_;
+
+	/// For the main LyXText, it is possible that this pit is not
+	/// yet in the CoordCache when moving cursor up.
+	/// x Paragraph coordinate is always 0 for main text anyway.
+	int const xo = isMainText(*bv.buffer())?
+		0 : bv.coordCache().get(this, pit).x_;
 	x -= xo;
 	RowMetrics const r = tm.computeRowMetrics(pit, row);
 	Paragraph const & par = pars_[pit];
-- 
2.39.2