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  1. Qt
  2. QTBUG-100936

[REG: 6.3 -> 6.4] Memory leak in moc, breaks build with ASAN

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Details

    • Bug
    • Resolution: Fixed
    • P1: Critical
    • 6.4.0
    • 6.4.0
    • Build tools: moc
    • None
    • Ubuntu 20.04 LTS
      cmake 3.21.1 from Qt's online installer
      clang 10.0.0
      g++ 9.3.0
    • 06e45cbd6a2e09bc32cb1c9aa3779d6bd5282c45

    Description

      1. Clone qt5.git: 
        git clone git://code.qt.io/qt/qt5.git
      2. Initialize submodule qtbase: 
        cd qt5/
perl init-repository --module-subset=qtbase
      3. In an empty directory next to the clone, configure Qt with ASAN: 
        /tmp/qt-bisect/qt5/configure -opensource -confirm-license -prefix $PWD/qtbase -sanitize address
      4. Try building: 
        cmake --build .

        After about a minute or 125 steps, building fails due to a memory leak in moc. I'll attach the command line output.

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          Is tested by

          Suggestion - Public suggestions QTQAINFRA-4139 Run autotests under sanitizers (ASAN / UBSAN / TSAN)

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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              fabiankosmale Fabian Kosmale
              rlohning Robert Löhning
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                Created:
                Updated:
                Resolved:

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