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Type: Bug
Resolution: Fixed
Priority: P4: Low
Fix Version/s: 6.5.2, 6.6.0
Affects Version/s: 6.4.0, 6.4.1, 6.5.0, 6.5.1, 6.4.2, 6.4.3, 6.5.1.1
Component/s: PySide
Labels:
None

Platform/s:

Windows
Commits:
f0109334c (dev), 7222d8a04 (6.5), 46ab90a5f (dev), afffc5838 (6.5), 2f37a27b3 (dev), 1c6a6a4e4 (6.5)

When use signal, the connected local function can not be destroyed by python

PYQT6.x not found this problem

import sys
from PySide6.QtWidgets import *
from PySide6.QtCore import *
from PySide6.QtGui import *


if __name__ == "__main__":
    app = QApplication(sys.argv)

    def func():
       button = QPushButton()

       def onClicked(text):
          print("=========clicked button:", text)
       button.clicked.connect(partial(onClicked, "demo"))

    def _run():
       import objgraph
       objgraph.show_growth()
       func()
       QTimer.singleShot(1000, _run)

    _run()
    app.exec()

test.zip

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test.zip
25 Jun '23 02:38
38 kB
jerry hao
testcode.png
25 Jun '23 02:39
244 kB
jerry hao
pyside2371_log.txt
26 Jun '23 06:09
2 kB
Friedemann Kleint
pyside2371.py
26 Jun '23 09:27
1.0 kB
Friedemann Kleint
pyside2371_diag.diff
26 Jun '23 09:27
6 kB
Friedemann Kleint

relates to

PYSIDE-2299 REG->6.5: Memory/Reference Leak with connecting signals to lambda functions referencing "self"

Closed

PYSIDE-2646 [REG: 6.2->6.5] Connections to lambda or nested function prevent destruction of objects they refer to

Closed

resulted from

PYSIDE-2141 Crash when connecting/disconnecting inherited slot

Closed

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For Gerrit Dashboard: PYSIDE-2371
#	Subject	Branch	Project	Status	CR	V
487671,5	PySide6/SignalManager: Fix memory leaks connecting free methods/lambdas	dev	pyside/pyside-setup	Status: MERGED	+2	0
487672,2	PySide6: Add debug operators for DynamicSlotDataV2/GlobalReceiverV2	dev	pyside/pyside-setup	Status: MERGED	+2	0
488119,2	PySide6: Add debug operators for DynamicSlotDataV2/GlobalReceiverV2	6.5	pyside/pyside-setup	Status: MERGED	+2	0
488261,2	PySide6/SignalManager: Fix memory leaks connecting free methods/lambdas	6.5	pyside/pyside-setup	Status: MERGED	+2	0
488591,3	Update changes-6.5.2	dev	pyside/pyside-setup	Status: MERGED	+2	0
488675,2	Update changes-6.5.2	6.5	pyside/pyside-setup	Status: MERGED	+2	0