From cdc5e8fd6135cf9cb0fdef57f3d00a318a1a5153 Mon Sep 17 00:00:00 2001
From: Jean-Christophe Fillion-Robin <jchris.fillionr@kitware.com>
Date: Sat, 21 May 2016 15:30:32 -0400
Subject: [PATCH] addDecorators: Check for null object

This prevents potential crashes or undefined behavior
when a null object is passed to the method.

(cherry picked from commit commontk/PythonQt@751ec46a30829bdcbcdae104ee9609b089a5f193)
---
 src/PythonQt.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/PythonQt.cpp b/src/PythonQt.cpp
index 4d01a15bb..9d6cf20aa 100644
--- a/src/PythonQt.cpp
+++ b/src/PythonQt.cpp
@@ -1560,6 +1560,10 @@ PythonQtClassInfo* PythonQtPrivate::currentClassInfoForClassWrapperCreation()
 
 void PythonQtPrivate::addDecorators(QObject* o, int decoTypes)
 {
+  if (o == nullptr)
+    {
+    return;
+    }
   o->setParent(this);
   int numMethods = o->metaObject()->methodCount();
   for (int i = 0; i < numMethods; i++) {