From cac95b57f2423d30e627c77c916c1bd5f509112c Mon Sep 17 00:00:00 2001
From: dbv <dbv@opencascade.com>
Date: Tue, 28 Mar 2017 16:43:35 +0300
Subject: [PATCH] Issue #1868: Crash with dump python when I translate a same
 object several times

Dump will show error window if history line not at the end.
---
 src/ExchangePlugin/ExchangePlugin_Dump.cpp | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/ExchangePlugin/ExchangePlugin_Dump.cpp b/src/ExchangePlugin/ExchangePlugin_Dump.cpp
index 5c5ee4665..d9effab93 100644
--- a/src/ExchangePlugin/ExchangePlugin_Dump.cpp
+++ b/src/ExchangePlugin/ExchangePlugin_Dump.cpp
@@ -50,6 +50,27 @@ void ExchangePlugin_Dump::dump(const std::string& theFileName)
   aDumper->clear();
   DocumentPtr aDoc = ModelAPI_Session::get()->moduleDocument();
 
+  int aFeaturesNb = aDoc->size(ModelAPI_Feature::group());
+  if(aFeaturesNb > 1) {
+    FeaturePtr aLastFeature =
+        ModelAPI_Feature::feature(aDoc->object(ModelAPI_Feature::group(), aFeaturesNb - 1));
+    if(aDoc->currentFeature(true) != aLastFeature) {
+        setError("Dump cannot be done. Please move the history line to the end before dumping.");
+        return;
+    }
+  }
+
+  DocumentPtr anActiveDoc = ModelAPI_Session::get()->activeDocument();
+  aFeaturesNb = anActiveDoc->size(ModelAPI_Feature::group());
+  if(aFeaturesNb > 1) {
+    FeaturePtr aLastFeature =
+        ModelAPI_Feature::feature(anActiveDoc->object(ModelAPI_Feature::group(), aFeaturesNb - 1));
+    if(anActiveDoc->currentFeature(true) != aLastFeature) {
+        setError("Dump cannot be done. Please move the history line to the end before dumping.");
+        return;
+    }
+  }
+
   std::list<FeaturePtr> aFeatures = aDoc->allFeatures();
   for(std::list<FeaturePtr>::const_iterator aFeatIt = aFeatures.begin();
       aFeatIt != aFeatures.end();
-- 
2.39.2