From 1e7aa1becf1978970463bf32f3a529c613eac768 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Mon, 29 Oct 2018 11:59:34 +0100
Subject: [PATCH] fix crash with Py3 when releasing memory buffer

---
 src/Gui/Document.cpp     | 1 +
 src/Gui/ViewProvider.cpp | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/Gui/Document.cpp b/src/Gui/Document.cpp
index 1cfa30980d..5c495d3211 100644
--- a/src/Gui/Document.cpp
+++ b/src/Gui/Document.cpp
@@ -210,6 +210,7 @@ Document::~Document()
         delete it2->second;
 
     // remove the reference from the object
+    Base::PyGILStateLocker lock;
     _pcDocPy->setInvalid();
     _pcDocPy->DecRef();
     delete d;
diff --git a/src/Gui/ViewProvider.cpp b/src/Gui/ViewProvider.cpp
index adb4d2914c..e1995d1425 100644
--- a/src/Gui/ViewProvider.cpp
+++ b/src/Gui/ViewProvider.cpp
@@ -95,6 +95,7 @@ ViewProvider::ViewProvider()
 ViewProvider::~ViewProvider()
 {
     if (pyViewObject) {
+        Base::PyGILStateLocker lock;
         pyViewObject->setInvalid();
         pyViewObject->DecRef();
     }