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  1. Qt
  2. QTBUG-50821

QSortFilterProxyModel crash when dataChanged during setFilter*

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    • Icon: Bug Bug
    • Resolution: Fixed
    • Icon: P4: Low P4: Low
    • 6.9.1, 6.10.0 FF
    • 5.5.1, 5.10.1
    • Widgets: Itemviews
    • None
    • not applicable
    • 687422abd (dev), ab628edbb (6.9)

      If QSortFilterProxyModel::setFilter* removes an item which was selected, the beginRemoveRows in QSortFilterProxyModelPrivate::remove_proxy_interval triggers a QItemSelectionModel::selectionChanged. If in response to that dataChanged is called on the source model, QSortFilterProxyModelPrivate::remove_proxy_interval is called again and when the stack returns to the first invocation, the proxy intervals are not valid anymore.

      tl;dr: changing the source model due to signals emitted during setFilter* crashes

        1. CMakeLists.txt
          1.0 kB
          Norbert Pfeiler
        2. debug crash backtrace.txt
          3 kB
          Norbert Pfeiler
        3. debug problem backtrace.txt
          5 kB
          Norbert Pfeiler
        4. main.cpp
          2 kB
          Norbert Pfeiler
        For Gerrit Dashboard: QTBUG-50821
        # Subject Branch Project Status CR V
        634601,4 QItemSelectionModel: document danger with setData from selectionChanged dev qt/qtbase Status: MERGED +2 0
        639219,2 QItemSelectionModel: document danger with setData from selectionChanged 6.9 qt/qtbase Status: MERGED +2 0

            dfaure_kdab David Faure
            darklighter Norbert Pfeiler
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              Created:
              Updated:
              Resolved:

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