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Immediately complete component upon creation failure 

We do not want to wait until reaching the Component destructor (at which
point e.g. the engine might be gone).

Pick-to: 6.2 6.3
Change-Id: Ic0e4383ec4e3759d9f02847413a25191a01286cb
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Maximilian Goldstein <max.goldstein@qt.io>
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
This commit is contained in:
Fabian Kosmale 2022-04-11 15:18:10 +02:00
parent ed7dd5ad01
commit 759090f591
2 changed files with 9 additions and 4 deletions
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10
src/qml/qml/qqmlcomponent.cpp
View File

@ -862,8 +862,16 @@ QObject *QQmlComponent::create(QQmlContext *context)
Q_D(QQmlComponent);
QObject *rv = d->doBeginCreate(this, context);
if (rv)
if (rv) {
completeCreate();
} else if (d->state.completePending) {
// overridden completCreate might assume that
// the object has actually been created
++creationDepth;
QQmlEnginePrivate *ep = QQmlEnginePrivate::get(d->engine);
d->complete(ep, &d->state);
--creationDepth;
}
if (rv && !d->requiredProperties().empty()) {
delete rv;
return nullptr;

3
tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp
View File

@ -4427,9 +4427,6 @@ void tst_qqmllanguage::deepProperty()
void tst_qqmllanguage::groupAssignmentFailure()
{
auto ep = std::make_unique<QQmlEngine>();
QTest::ignoreMessage(QtMsgType::QtWarningMsg, "QQmlComponent: Component destroyed while completion pending");
QTest::ignoreMessage(QtMsgType::QtWarningMsg, "This may have been caused by one of the following errors:");
QTest::ignoreMessage(QtMsgType::QtWarningMsg, QRegularExpression(".*Cannot set properties on b as it is null.*"));
QTest::ignoreMessage(QtMsgType::QtWarningMsg, QRegularExpression(".*Invalid property assignment: url expected - Assigning null to incompatible properties in QML is deprecated. This will become a compile error in future versions of Qt..*"));
QQmlComponent component(ep.get(), testFileUrl("groupFailure.qml"));
QScopedPointer<QObject> o(component.create());