Details
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Bug
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Resolution: Done
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P2: Important
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6.3.0
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None
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3
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bf3fc5c95c (qt/qtbase/dev) bf3fc5c95c (qt/tqtc-qtbase/dev) 841f04f309 (qt/qtbase/6.4) 841f04f309 (qt/tqtc-qtbase/6.4) 98b9b719c7 (qt/qtbase/6.3) 98b9b719c7 (qt/tqtc-qtbase/6.3)
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Team A Foundation Sprint 59
Description
Given the following code:
QFuture<int> getInteger() { auto promise = QSharedPointer<QPromise<int>>::create(); QTimer::singleShot(1000, qApp, [promise] () mutable { promise->start(); QTimer::singleShot(1000, qApp, [] () { qApp->quit(); }); }); return promise->future(); } int main(int argc, char *argv[]) { QCoreApplication a(argc, argv); auto future = getInteger(); future .onCanceled([]{ qDebug() << "Canceled"; return -1; }); QFutureWatcher<int> watcher; watcher.setFuture(future); QObject::connect(&watcher, &QFutureWatcher<int>::canceled, []{ qDebug() << "watcher canceled"; }); QObject::connect(&watcher, &QFutureWatcher<int>::finished, []{ qDebug() << "watcher finished"; }); QObject::connect(&watcher, &QFutureWatcher<int>::started, []{ qDebug() << "watcher started"; }); return a.exec(); }
WIth Qt 6.2.4 and Qt 6.1.3 we have the correct output:
Canceled watcher started watcher canceled watcher finished
However, with Qt 6.3.0, or the latest 6.4 snapshot, the onCanceled handler in never called:
watcher started watcher canceled watcher finished