QGIS-dev crashes after PyQt5 QComboBox.clear()

[qgib]

Author Name: Ondrej Remes (Ondrej Remes)
Original Redmine Issue: 18068
Affected QGIS version: 2.99(master)
Redmine category:python_bindings_/_sipify

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Hello, when i can clear item list in QComboBox used in custom attribute form, Qgis crashes without debug informations! Same situation occurs when i can remove items by QComboBox.removeItem() calling.

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• vloz_kere.ui (Ondrej Remes)

[qgib]

Author Name: Nyall Dawson (@nyalldawson)

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Can you share the form?

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• status_id was changed from Open to Feedback

[qgib]

Author Name: Ondrej Remes (Ondrej Remes)

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okey, in attachment.

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• 12138 was configured as vloz_kere.ui

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• vloz_kere.ui (Ondrej Remes)

[qgib]

Author Name: Alessandro Pasotti (@elpaso)

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Cannot reproduce on master/linux with Qt 5.9.3

[qgib]

Author Name: Ondrej Remes (Ondrej Remes)

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I'm sending part of code:

def vloz_kere(dialog, layer, feature):
  global myDialog
  myDialog = dialog
  fTAXON = dialog.findChild(QComboBox, "TAXON")
	fTAXON.editTextChanged.connect(refresh_combo)


def refresh_combo():
	fTAXON = myDialog.findChild(QComboBox, "TAXON")
	if fTAXON.count() is None or fTAXON.count() == 0 :
		pass
	else:
		fTAXON.clear() 
	for key, value in druh.items():
		if str(fTAXON.currentText()) in value:
			fTAXON.addItem(value)

I try add condition for first use (fTAXON.count() is None or 0) but problem is not finished. Qgis frozes and be shutdown with no debug infrormations.

[qgib]

Author Name: Ondrej Remes (Ondrej Remes)

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The problem occurs after start attribute form when i try type something in combobox, cursor is freeze for 3 - 4 seconds and the application crashes.

[qgib]

Author Name: Denis Rouzaud (@3nids)

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• assigned_to_id removed Denis Rouzaud

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• status_id was changed from Feedback to Open
• version was changed from master to 2.99(master)
• crashes_corrupts_data was changed from 0 to 1

[qgib]

Author Name: Jürgen Fischer (@jef-n)

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Please test with QGIS 3.4 - QGIS 2.18 reached it's end of life.

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• status_id was changed from Open to Feedback

[qgib]

Author Name: Nyall Dawson (@nyalldawson)

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• resolution was changed from to no timely feedback
• status_id was changed from Feedback to Closed