From 99f34f8321a063ec7a051ab769702a4401b92f5a Mon Sep 17 00:00:00 2001
From: Lukas Matena <lukasmatena@seznam.cz>
Date: Wed, 31 Jul 2019 10:18:49 +0200
Subject: [PATCH] SLA gizmo: fixed a crash with multiple selection

---
 src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp b/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp
index 267c4f899..3ec268af9 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp
@@ -59,7 +59,7 @@ bool GLGizmoSlaSupports::on_init()
 
 void GLGizmoSlaSupports::set_sla_support_data(ModelObject* model_object, const Selection& selection)
 {
-    if (selection.is_empty()) {
+    if (! model_object || selection.is_empty()) {
         m_model_object = nullptr;
         return;
     }