From 54219f151ca958608686644a5e72a024afc85711 Mon Sep 17 00:00:00 2001
From: "Zheng, Lei" <realthunder.dev@gmail.com>
Date: Sun, 19 Nov 2017 03:07:36 +0800
Subject: [PATCH] Path.Area: handle empty wires during sorting

---
 src/Mod/Path/App/Area.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/Mod/Path/App/Area.cpp b/src/Mod/Path/App/Area.cpp
index da7b3971e5..b9972f1ff9 100644
--- a/src/Mod/Path/App/Area.cpp
+++ b/src/Mod/Path/App/Area.cpp
@@ -2535,13 +2535,18 @@ struct ShapeInfo{
     std::list<TopoDS_Shape> sortWires(const gp_Pnt &pstart, gp_Pnt &pend,
             double min_dist, double max_dist, gp_Pnt *pentry) {
 
+        std::list<TopoDS_Shape> wires;
+
         if(myWires.empty() ||
-           pstart.SquareDistance(myStartPt)>Precision::SquareConfusion())
+           pstart.SquareDistance(myStartPt)>Precision::SquareConfusion()) 
+        {
             nearest(pstart);
+            if(myWires.empty())
+                return wires;
+        }
 
         if(pentry) *pentry = myBestPt;
 
-        std::list<TopoDS_Shape> wires;
         if(min_dist < 0.01)
             min_dist = 0.01;
         while(true) {