From b54b3567d9b145bf628f58cec1073cecd7d4b951 Mon Sep 17 00:00:00 2001
From: azv <azv@opencascade.com>
Date: Wed, 20 Apr 2016 12:11:25 +0300
Subject: [PATCH] Crash when removing part with sketch

---
 src/SketchSolver/SketchSolver_Manager.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/SketchSolver/SketchSolver_Manager.cpp b/src/SketchSolver/SketchSolver_Manager.cpp
index 6511bc843..43c6e7cce 100644
--- a/src/SketchSolver/SketchSolver_Manager.cpp
+++ b/src/SketchSolver/SketchSolver_Manager.cpp
@@ -482,6 +482,10 @@ void SketchSolver_Manager::degreesOfFreedom()
   std::list<SketchSolver_Group*>::const_iterator aGroupIt = myGroups.begin();
   for (; aGroupIt != myGroups.end(); ++aGroupIt) {
     CompositeFeaturePtr aSketch = (*aGroupIt)->getWorkplane();
+    if (!aSketch->data()->isValid()) {
+      myDoF.erase(aSketch);
+      continue;
+    }
 
     // check conflicting constraints in the group
     if ((*aGroupIt)->isFailed())
-- 
2.39.2