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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
import gc
import os
import sys
import unittest
from pathlib import Path
sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
from init_paths import init_test_paths
init_test_paths(False)
from PySide6.QtCore import QObject, SIGNAL
# Description of the problem
# After creating an PyObject that inherits from QObject, connecting it,
# deleting it and later creating another Python QObject-based object, this
# new object will point to the same memory position as the first one.
# Somehow the underlying QObject also points to the same position.
# In PyQt4, the connection works fine with the same memory behavior,
# so it looks like specific to SIP.
class Dummy(QObject):
def __init__(self, parent=None):
QObject.__init__(self, parent)
class Joe(QObject):
def __init__(self, parent=None):
QObject.__init__(self, parent)
class SegfaultCase(unittest.TestCase):
"""Test case for the segfault happening when parent() is called inside
ProxyObject"""
def setUp(self):
self.called = False
def tearDown(self):
try:
del self.args
except:
pass
# PYSIDE-535: Need to collect garbage in PyPy to trigger deletion
gc.collect()
def callback(self, *args):
if tuple(self.args) == args:
self.called = True
def testSegfault(self):
"""Regression: Segfault for qobjects in the same memory position."""
obj = Dummy()
QObject.connect(obj, SIGNAL('bar(int)'), self.callback)
self.args = (33,)
obj.emit(SIGNAL('bar(int)'), self.args[0])
self.assertTrue(self.called)
del obj
# PYSIDE-535: Need to collect garbage in PyPy to trigger deletion
gc.collect()
obj = Joe()
QObject.connect(obj, SIGNAL('bar(int)'), self.callback)
self.args = (33,)
obj.emit(SIGNAL('bar(int)'), self.args[0])
self.assertTrue(self.called)
if __name__ == '__main__':
unittest.main()
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