From bbe4f48439098ec9748a224ce4b6ab52414505be Mon Sep 17 00:00:00 2001
From: mpv <mpv@opencascade.com>
Date: Wed, 18 Dec 2019 13:15:07 +0300
Subject: [PATCH] Fix for the issue #3126 : Dump/Load study results in invalid
 Wire

---
 src/Model/Model_AttributeSelection.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Model/Model_AttributeSelection.cpp b/src/Model/Model_AttributeSelection.cpp
index 9d1e6cb65..48a42bd89 100644
--- a/src/Model/Model_AttributeSelection.cpp
+++ b/src/Model/Model_AttributeSelection.cpp
@@ -790,6 +790,9 @@ std::string Model_AttributeSelection::namingName(const std::string& theDefaultNa
   }
 
   ResultPtr aCont = context();
+  if (!aCont.get()) {
+    return ""; // invalid case
+  }
   TDF_Label aSelLab = selectionLabel();
   if (aSelLab.IsAttribute(kSIMPLE_REF_ID)) { // whole context, no value
     return contextName(aCont);
-- 
2.39.2