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Type: Bug
Resolution: Fixed
Priority: P2: Important
Fix Version/s: 6.2.0 Beta1, 6.2.8, 6.3.0 Alpha, 6.4.3, 6.5.0, 6.5, 6.6.0
Affects Version/s: 5.15.2
Component/s: QML: Declarative and Javascript Engine
Labels:
- earmarked_by_ulf

Platform/s:

All
Commits:
16fc4cf366961e50b5bdf29af5c0546fe3c69495 (qt/qtdeclarative/dev) d30fad2a71aa3dab8e858b5fd421f8103b1bdcac (qt/qtdeclarative/6.2), 718f3469f (dev), 749470e6b (tqtc/lts-6.2), 389110675 (6.5), a22ea1619 (6.4)

The shown ListModel doesn't keep "o" alive, which is a QObject whose ownership is JavaScriptOwnership. I observe that "gc()" yields to a destructor call of the object that "o" references.

Please use the attached "gc" tarball that contains an example project. Entering Code doesn't appear to work in the Description.

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gc.tar.gz
2 kB
24 Feb '21 19:22

is duplicated by

QTBUG-99279 listModel.set() leads to crash in some situation.

Closed

relates to

QTBUG-95895 REG 5.15 -> 6.2: destroy() does not destroy objects after appending listModel.

Closed

QTBUG-80589 Assigning a new QObject w/o a parent to a C++ property through QML doesn't prevent it from being garbage collected

Closed

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For Gerrit Dashboard: QTBUG-91390
#	Subject	Branch	Project	Status	CR	V
354140,7	qqmllistmodel: Fix QObjects getting garbage collected	dev	qt/qtdeclarative	Status: MERGED	+2	0
354400,2	qqmllistmodel: Fix QObjects getting garbage collected	6.2	qt/qtdeclarative	Status: MERGED	+2	0
456771,4	ListModel: Use PersistentValue to keep track of objects	dev	qt/qtdeclarative	Status: MERGED	+2	0
457053,2	ListModel: Use PersistentValue to keep track of objects	6.5	qt/qtdeclarative	Status: MERGED	+2	0
457054,3	ListModel: Use PersistentValue to keep track of objects	6.4	qt/qtdeclarative	Status: MERGED	+2	0
457121,3	ListModel: Use PersistentValue to keep track of objects	tqtc/lts-6.2	qt/tqtc-qtdeclarative	Status: MERGED	+2	0