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  1. Qt
  2. QTBUG-59611

Program crashes opening QFileDialog when asan flags are used (heap-use-after-free)

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    • 524f39db899d68e0ef90184a268eb75ad4ac216e

    Description

      When using these flags:

      GLOBAL_FLAGS += -fsanitize=address,bounds -fsanitize-undefined-trap-on-error -O0
      QMAKE_CFLAGS += $$GLOBAL_FLAGS
      QMAKE_CXXFLAGS += $$GLOBAL_FLAGS
      QMAKE_LFLAGS += $$GLOBAL_FLAGS

      The address sanitizer is triggered when opening QFileDialogs and crashes the executing program.

      Attached is a simple reproducible gui project to simulate this. In addition, attached is the output produced by asan.

      Attachments

        1. buggy_asan.txt
          8 kB
          mattwaltz
        2. buggy.zip
          5 kB
          mattwaltz
        For Gerrit Dashboard: QTBUG-59611
        # Subject Branch Project Status CR V
        189041,2 gtk3: Fix use of dangling pointers 5.8 qt/qtbase Status: MERGED +2 0
        291645,1 Notify Accessibility of geometry changes dev qt/qtdeclarative Status: ABANDONED 0 0

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            thiago Thiago Macieira
            mattwaltz mattwaltz
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              Created:
              Updated:
              Resolved:

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