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  1. Qt
  2. QTBUG-54693

QFileDialog::getOpenFileName crashes when parent is deleted while dialog is open

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Details

    • 5
    • Foundation Sprint 104, Foundation Sprint 105, Foundation Sprint 106

    Description

      Calling "QFileDialog::getOpenFileName" and then deleting the parent given to this function will crash Qt on Windows 10 64-bit.

      I suspect the reason is similar to: https://blogs.kde.org/2009/03/26/how-crash-almost-every-qtkde-application-and-how-fix-it-0

      Update
      In case it helps, this will easily reproduce the crash:

      int main(int argc, char **argv) {
  QApplication application{argc, argv};

  QMainWindow *main_window = new QMainWindow();
  main_window->show();

  QPushButton *button = new QPushButton("Press me");
  main_window->setCentralWidget(button);

  QObject::connect(button, &QPushButton::clicked, [main_window]() {
    QTimer::singleShot(2000, [main_window]() { delete main_window; });

    QFileDialog::getOpenFileName(main_window, "Close me fast or I will crash!");
  });

  application.exec();

  return 0;
}

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        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-48414 QFileDialog::getOpenFileNames crashes or hangs on a sandbox

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-22012 getOpenFileName() crashes the app under Irix 6.5

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-45634 (QT 5.1) QFileDialog::getOpenFileName(s) crashes on OSX Yosemite 10.10.3

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-47408 QFileDialog::getOpenFileName crashes if mounting a disk

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-58167 QFileDialogPrivate crashes on QEvent::LanguageChange event

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-33119 QFileDialog::getOpenFileNames causes crash on Win7 x64

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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            People

              mmutz Marc Mutz
              rggjan Jan Rüegg
              Vladimir Minenko Vladimir Minenko
              Alex Blasche Alex Blasche
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              Dates

                Created:
                Updated:

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