From 77609198632df11f00f50fb0c165057ce4d2d3db Mon Sep 17 00:00:00 2001
From: nds <nds@opencascade.com>
Date: Mon, 11 Apr 2016 08:58:39 +0300
Subject: [PATCH] Issue #1343. Improvement of Extrusion and Revolution
 operations: correction for case: create Sketch, create Extrusion on the
 sketch, delete Sketch, Ok, crash.

---
 src/Model/Model_Objects.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Model/Model_Objects.cpp b/src/Model/Model_Objects.cpp
index 70d1fa24d..6a4752d09 100644
--- a/src/Model/Model_Objects.cpp
+++ b/src/Model/Model_Objects.cpp
@@ -240,7 +240,7 @@ void Model_Objects::removeFeature(FeaturePtr theFeature)
     for(; aRefIter != aRefs.end(); aRefIter++) {
       std::shared_ptr<ModelAPI_CompositeFeature> aComposite = 
         std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(*aRefIter);
-      if (aComposite.get()) {
+      if (aComposite.get() && aComposite->data()->isValid()) {
         aComposite->removeFeature(theFeature);
       }
     }
-- 
2.39.2