From 5bf045a27ece00b52f827ab8b942f817ec1077f1 Mon Sep 17 00:00:00 2001
From: dbv <dbv@opencascade.com>
Date: Wed, 18 Nov 2015 09:49:22 +0300
Subject: [PATCH] Fix for crash in fillet

---
 src/Events/Events_Loop.cpp                         | 5 ++++-
 src/SketchPlugin/SketchPlugin_ConstraintFillet.cpp | 4 ++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/Events/Events_Loop.cpp b/src/Events/Events_Loop.cpp
index da0d87862..d2d96de53 100644
--- a/src/Events/Events_Loop.cpp
+++ b/src/Events/Events_Loop.cpp
@@ -129,7 +129,10 @@ void Events_Loop::flush(const Events_ID& theID)
     send(aGroup, false);
 
     if (!aWasFlushed)
-      myFlushed.erase(myFlushed.find(theID.myID));
+      // TODO: Stabilization fix. Check later.
+      if(myFlushed.find(theID.myID) != myFlushed.end()) {
+        myFlushed.erase(myFlushed.find(theID.myID));
+      }
   }
 }
 
diff --git a/src/SketchPlugin/SketchPlugin_ConstraintFillet.cpp b/src/SketchPlugin/SketchPlugin_ConstraintFillet.cpp
index d723a3e20..bf47039b1 100644
--- a/src/SketchPlugin/SketchPlugin_ConstraintFillet.cpp
+++ b/src/SketchPlugin/SketchPlugin_ConstraintFillet.cpp
@@ -226,6 +226,10 @@ void SketchPlugin_ConstraintFillet::execute()
   // Calculate fillet arc parameters
   std::shared_ptr<GeomAPI_XY> aCenter, aTangentPntA, aTangentPntB;
   calculateFilletCenter(anOldFeatureA, anOldFeatureB, aFilletRadius, isStart, aCenter, aTangentPntA, aTangentPntB);
+  if(!aCenter.get() || !aTangentPntA.get() || !aTangentPntB.get()) {
+    setError("Can not create fillet with the specified parameters.");
+    return;
+  }
   // update features
   std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
       aNewFeatureA->attribute(aFeatAttributes[isStart[0] ? 0 : 1]))->setValue(
-- 
2.39.2