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  1. Qt
  2. QTBUG-110877

QtPrivate::QPropertyBindingData::d() read access violation (use after free)

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    • Windows

      The bug happens when trying to use Q_OBJECT_BINDABLE_PROPERTY.

      It finally goes down to function QtPrivate::QPropertyBindingData::d(). At the time of function quintptr d() const

      { return d_ref(); }

      trying to return, application crashes because of read access violation at (usually) 0x[all Fs]. The reason is believed to be a dangling pointer.

      Using MSVC 100% reproduces the bug. MinGW seems fine so far (maybe just luck).

      Use the attached sample to reproduce the issue.

        1. qt_test_q_object_bindable_property_with_bindable.zip
          5 kB
        2. qt_test_q_object_bindable_property.zip
          9 kB
        3. qtbug-110877-updated.zip
          6 kB
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            oulu_hillbilly Sami Varanka
            luqiaochen Luqiao Chen
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              Created:
              Updated:
              Resolved:

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