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  1. Qt
  2. QTBUG-34337

Application hangs when enabling a11y for QTableView with large number (100k+) rows

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Details

    • Bug
    • Resolution: Fixed
    • P1: Critical
    • 6.5.1, 6.6.0
    • 5.1.1, 5.3.1, 5.4.1, 5.12.0, 6.2, 6.3, 6.4, 6.5
    • GUI: Accessibility (a11y)
    • None
    • OS X Mavericks, MBA 2013
      macOS 12
    • macOS
    • 69a8d1293 (dev), 03b7e9790 (dev), 042d75349 (dev), 11ae55e91 (dev), 6b67c3e73 (dev), 52c2b8208 (dev), 9ebbfb4af (6.5), 2092cd1f0 (6.5), 39de9b44f (6.5), 4599ead6a (6.5), f11c00ec6 (6.5), 0b28e08bf (6.5)
    • Bug Fixing Week Q2/2020

    Description

      When using scrollbars for scrolling QTableView, Qt spends a lot of time creating a11y elements, hanging the application. lldb reveals this after breaking:

      • thread #1: tid = 0x2fff5, 0x00000001017f50f0 QtGui`QAccessible::uniqueId(QAccessibleInterface*) + 240, queue = 'com.apple.main-thread, stop reason = signal SIGSTOP
        frame #0: 0x00000001017f50f0 QtGui`QAccessible::uniqueId(QAccessibleInterface*) + 240
        frame #1: 0x000000010c44d046 libqtaccessiblewidgets.dylib`QAccessibleTable::child(int) const + 1430
        frame #2: 0x000000010422926d libqcocoa.dylib`QCocoaAccessible::unignoredChildren(objc_object*, QAccessibleInterface*) + 93
        frame #3: 0x0000000104226fd4 libqcocoa.dylib`-[QCocoaAccessibleElement accessibilityAttributeValue:] + 324

      Attachments

        Issue Links

          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-113859 [REG 6.4->6.5] Accessibility crash when clicking on a link in a list on macOS

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          For Gerrit Dashboard: QTBUG-34337
          # Subject Branch Project Status CR V
          471248,5 macOS Accessibility: code hygiene dev qt/qtbase Status: MERGED +2 0
          471249,5 macOS Accessibility: optimize table interface implementation dev qt/qtbase Status: MERGED +2 0
          471250,5 macOS Accessibility: add an elementWithInterface helper dev qt/qtbase Status: MERGED +2 0
          471251,5 macOS Accessibility: don't create an unnecessary interface dev qt/qtbase Status: MERGED +2 0
          471252,5 macOS Accessibility: Delay creation of table cell interfaces dev qt/qtbase Status: MERGED +2 0
          471253,5 macOS Accessibility: flag all synthetic elements as unignored dev qt/qtbase Status: MERGED +2 0
          471530,2 macOS Accessibility: code hygiene 6.5 qt/qtbase Status: MERGED +2 0
          471531,2 macOS Accessibility: don't create an unnecessary interface 6.5 qt/qtbase Status: MERGED +2 0
          471532,4 macOS Accessibility: add an elementWithInterface helper 6.5 qt/qtbase Status: MERGED +2 0
          471533,2 macOS Accessibility: optimize table interface implementation 6.5 qt/qtbase Status: MERGED +2 0
          471534,5 macOS Accessibility: flag all synthetic elements as unignored 6.5 qt/qtbase Status: MERGED +2 0
          471535,3 macOS Accessibility: Delay creation of table cell interfaces 6.5 qt/qtbase Status: MERGED +2 0

          Activity

            People

              vhilshei Volker Hilsheimer
              sadaszewski Stanislaw Adaszewski
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              Dates

                Created:
                Updated:
                Resolved: