From b284b2b19ae685bcfbb4fb8a40e54586f16aebe5 Mon Sep 17 00:00:00 2001
From: supermerill <merill@free.fr>
Date: Sat, 6 Jun 2020 16:07:18 +0200
Subject: [PATCH] fix XY rework crashing bug.

---
 src/libslic3r/PrintObject.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/libslic3r/PrintObject.cpp b/src/libslic3r/PrintObject.cpp
index 5e0ed31ff..11621ef32 100644
--- a/src/libslic3r/PrintObject.cpp
+++ b/src/libslic3r/PrintObject.cpp
@@ -2505,6 +2505,8 @@ ExPolygons PrintObject::_shrink_contour_holes(double contour_delta, double defau
                 }
                 continue;
             }
+        } else {
+            contours.push_back(ex_poly.contour);
         }
     }
     return diff_ex(union_(contours), union_(holes));