From 262400931dcb6c15ec1adf5b85aeaf18d0ddb533 Mon Sep 17 00:00:00 2001
From: eap <eap@opencascade.com>
Date: Mon, 24 Apr 2017 17:17:28 +0300
Subject: [PATCH] IPAL54097: SIGSEGV in Scalar Bar Properties dialog and crash
 in next operation

---
 src/OBJECT/SMESH_ScalarBarActor.cxx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/OBJECT/SMESH_ScalarBarActor.cxx b/src/OBJECT/SMESH_ScalarBarActor.cxx
index c24369e0f..8096b1609 100644
--- a/src/OBJECT/SMESH_ScalarBarActor.cxx
+++ b/src/OBJECT/SMESH_ScalarBarActor.cxx
@@ -588,7 +588,8 @@ int SMESH_ScalarBarActor::RenderOpaqueGeometry(vtkViewport *viewport)
       // Customization of the vtkScalarBarActor to show distribution histogram.
       if ( myDistributionColoringType == SMESH_MULTICOLOR_TYPE &&
            GetDistributionVisibility() &&
-           distrVisibility )
+           distrVisibility &&
+           myNbValues[i] > 0 )
       {
         rgb = distColors->GetPointer(3*dcCount); //write into array directly
         rgb[0] = rgba[0];