From bfa53df1ece53ff30dec9f02e8dcf97358789bbb Mon Sep 17 00:00:00 2001
From: Brad Hards <bradh@frogmouth.net>
Date: Sat, 29 Nov 2008 05:34:33 +0000
Subject: [PATCH] Don't crash when setting up the document synopsis for ODTs
 with strange heading ordering.

This may still cause the synopsis to look different
to the way the user expected. Will take another
look at that.

BUG: 168678

svn path=/trunk/KDE/kdegraphics/okular/; revision=890395
---
 core/textdocumentgenerator.cpp | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/core/textdocumentgenerator.cpp b/core/textdocumentgenerator.cpp
index f79203169..2bd896a13 100644
--- a/core/textdocumentgenerator.cpp
+++ b/core/textdocumentgenerator.cpp
@@ -201,15 +201,20 @@ void TextDocumentGeneratorPrivate::generateTitleInfos()
         } else if ( newLevel > level ) {
             parentNodeStack.push( parentNode );
             parentNode = parentNode.lastChildElement();
-            parentNode.appendChild( item );
+            if ( ! parentNode.isNull() ) {
+                parentNode.appendChild( item );
+            }
             level = newLevel;
         } else {
             for ( int i = level; i > newLevel; i-- ) {
                 level--;
-                parentNode = parentNodeStack.pop();
+                if ( ! parentNodeStack.isEmpty() ) {
+                    parentNode = parentNodeStack.pop();
+                }
+            }
+            if ( ! parentNode.isNull() ) {
+                parentNode.appendChild( item );
             }
-
-            parentNode.appendChild( item );
         }
     }
 }