From 58887d8b841f18f3da4e5e3f8052f75edba5b9cc Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Sun, 11 Feb 2018 14:08:18 +0100
Subject: [PATCH] fix reference counting issue

---
 src/Mod/Part/App/GeometrySurfacePyImp.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Mod/Part/App/GeometrySurfacePyImp.cpp b/src/Mod/Part/App/GeometrySurfacePyImp.cpp
index bb2726287a..95445f40c5 100644
--- a/src/Mod/Part/App/GeometrySurfacePyImp.cpp
+++ b/src/Mod/Part/App/GeometrySurfacePyImp.cpp
@@ -837,6 +837,7 @@ PyObject* GeometrySurfacePy::intersect(PyObject *args)
             if (PyArg_ParseTuple(args, "O!|d", &(Part::GeometryCurvePy::Type), &p, &prec)) {
                 GeometryCurvePy* curve = static_cast<GeometryCurvePy*>(p);
                 PyObject* t = PyTuple_New(2);
+                Py_INCREF(this);
                 PyTuple_SetItem(t, 0, this);
                 PyTuple_SetItem(t, 1, PyFloat_FromDouble(prec));
                 return curve->intersectCS(t);