From a776656636c5d844c02f7ba34f9440fe8f866bea Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=BCrgen=20Spitzm=C3=BCller?= <spitz@lyx.org>
Date: Mon, 2 Feb 2009 13:37:36 +0000
Subject: [PATCH] * InsetMathHull (numbered): 	- prevent NULL pointer (bug
 5688).

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/branches/BRANCH_1_6_X@28320 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/mathed/InsetMathHull.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/mathed/InsetMathHull.cpp b/src/mathed/InsetMathHull.cpp
index cb1d457656..274e461f11 100644
--- a/src/mathed/InsetMathHull.cpp
+++ b/src/mathed/InsetMathHull.cpp
@@ -530,6 +530,11 @@ void InsetMathHull::numbered(row_type row, bool num)
 		label_[row] = 0;
 		// We need an update of the Buffer reference cache.
 		// This is achieved by updateLabels().
+		if (!buffer_) {
+			// The buffer is set at the end of readInset
+			// when parsing the inset, buffer_ is 0.
+			return;
+		}
 		lyx::updateLabels(buffer());
 	}
 }