From 46426f1196af7ec4cb7fcbc645158626cd2a042d Mon Sep 17 00:00:00 2001
From: Jeff Young <jeff@rokeby.ie>
Date: Wed, 12 Sep 2018 15:59:01 +0100
Subject: [PATCH] Fix segfault when routing.

Fixes: lp:1792037
* https://bugs.launchpad.net/kicad/+bug/1792037
---
 pcbnew/router/router_preview_item.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/pcbnew/router/router_preview_item.cpp b/pcbnew/router/router_preview_item.cpp
index ac344ae6de..83748d7fc1 100644
--- a/pcbnew/router/router_preview_item.cpp
+++ b/pcbnew/router/router_preview_item.cpp
@@ -130,8 +130,11 @@ const BOX2I ROUTER_PREVIEW_ITEM::ViewBBox() const
     switch( m_type )
     {
     case PR_SHAPE:
-        bbox = m_shape->BBox();
-        bbox.Inflate( m_width / 2 );
+        if( m_shape )
+        {
+            bbox = m_shape->BBox();
+            bbox.Inflate( m_width / 2 );
+        }
         return bbox;
 
     case PR_POINT: