Fix bug 836 - "Pyside crashes with more than four base classes"

Reviewer: Marcelo Lira <marcelo.lira@openbossa.org>
          Renato Araújo <renato.filho@openbossa.org>

libpyside/pyside.cpp

@@ -154,7 +154,7 @@ void initQObjectSubType(SbkObjectType* type, PyObject* args, PyObject* kwds)
     QByteArray className(PyString_AS_STRING(PyTuple_GET_ITEM(args, 0)));
 
     PyObject* bases = PyTuple_GET_ITEM(args, 1);
-    int numBases = PyTuple_GET_SIZE(args);
+    int numBases = PyTuple_GET_SIZE(bases);
     QMetaObject* baseMo = 0;
 
     for (int i = 0; i < numBases; ++i) {
@@ -230,7 +230,7 @@ void initQObjectSubType(SbkObjectType* type, PyObject* args, PyObject* kwds)
 PyObject* getMetaDataFromQObject(QObject* cppSelf, PyObject* self, PyObject* name)
 {
     PyObject* attr = PyObject_GenericGetAttr(self, name);
-    if (!Shiboken::Object::isValid(reinterpret_cast<SbkObject*>(self), false)) 
+    if (!Shiboken::Object::isValid(reinterpret_cast<SbkObject*>(self), false))
         return attr;
 
     if (attr && Property::isPropertyType(attr)) {

tests/QtGui/CMakeLists.txt

@@ -54,6 +54,7 @@ PYSIDE_TEST(bug_750.py)
 PYSIDE_TEST(bug_778.py)
 PYSIDE_TEST(bug_793.py)
 PYSIDE_TEST(bug_811.py)
+PYSIDE_TEST(bug_836.py)
 PYSIDE_TEST(customproxywidget_test.py)
 PYSIDE_TEST(deepcopy_test.py)
 PYSIDE_TEST(float_to_int_implicit_conversion_test.py)

tests/QtGui/bug_836.py

@@ -0,0 +1,28 @@
+from PySide.QtCore import *
+from PySide.QtGui import *
+
+class Mixin1(object):
+    pass
+
+class Mixin2(object):
+    pass
+
+class Mixin3(object):
+    pass
+
+class MainWindow(Mixin1, Mixin2, Mixin3, QFrame):
+    def __init__(self):
+        super(MainWindow, self).__init__()
+
+def main():
+    app = QApplication([])
+    # if it doesn't crash it should pass
+    w = MainWindow()
+    w.show()
+    QTimer.singleShot(0, w.close)
+    app.exec_()
+
+if __name__ == "__main__":
+    main()
+
+