From 74584e2081c9a38fd5d8abb5a4e4cddc93e87514 Mon Sep 17 00:00:00 2001
From: Maciej Suminski <maciej.suminski@cern.ch>
Date: Fri, 24 Jul 2015 09:42:46 +0200
Subject: [PATCH] Fixed crash on undo layer change in TEXTE_MODULE.

---
 pcbnew/class_text_mod.cpp  | 3 +++
 pcbnew/tools/edit_tool.cpp | 1 +
 2 files changed, 4 insertions(+)

diff --git a/pcbnew/class_text_mod.cpp b/pcbnew/class_text_mod.cpp
index 784bd00d2e..ef83ccdee1 100644
--- a/pcbnew/class_text_mod.cpp
+++ b/pcbnew/class_text_mod.cpp
@@ -493,6 +493,9 @@ unsigned int TEXTE_MODULE::ViewGetLOD( int aLayer ) const
 {
     const int MAX = std::numeric_limits<unsigned int>::max();
 
+    if( !m_view )
+        return 0;
+
     if( m_Type == TEXT_is_VALUE && !m_view->IsLayerVisible( ITEM_GAL_LAYER( MOD_VALUES_VISIBLE ) ) )
         return MAX;
 
diff --git a/pcbnew/tools/edit_tool.cpp b/pcbnew/tools/edit_tool.cpp
index 80376d6099..467772752c 100644
--- a/pcbnew/tools/edit_tool.cpp
+++ b/pcbnew/tools/edit_tool.cpp
@@ -383,6 +383,7 @@ int EDIT_TOOL::Properties( const TOOL_EVENT& aEvent )
         // Display properties dialog
         BOARD_ITEM* item = selection.Item<BOARD_ITEM>( 0 );
 
+        // Store the head of the undo list to compare if anything has changed
         std::vector<PICKED_ITEMS_LIST*>& undoList = editFrame->GetScreen()->m_UndoList.m_CommandsList;
 
         // Some of properties dialogs alter pointers, so we should deselect them