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  1. Qt
  2. QTBUG-104787

Thread Sanitizer reports data races in QtConcurrent

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Details

    • Bug
    • Resolution: Fixed
    • P2: Important
    • None
    • 6.3.0
    • Core: QtConcurrent
    • None
    • 8
    • Foundation Sprint 61, Foundation Sprint 62

    Description

      TSAN support was recently added to Qt Core.

      Running Qt Creator with Thread Sanitizer reports multiple issues in QtConcurrent, with the following summaries:

      SUMMARY: ThreadSanitizer: data race on vptr (ctor/dtor vs virtual call) /usr/local/Qt-6.4.0/include/QtConcurrent/qtconcurrentmapkernel.h:94 in QtConcurrent::MappedReducedKernel<QList<TextEditor::HighlightingResult>, QList<LanguageClient::ExpandedSemanticToken>::const_iterator, std::function<TextEditor::HighlightingResult (LanguageClient::ExpandedSemanticToken const&)>, QtPrivate::PushBackWrapper, QtConcurrent::ReduceKernel<QtPrivate::PushBackWrapper, QList<TextEditor::HighlightingResult>, TextEditor::HighlightingResult> >::~MappedReducedKernel()

SUMMARY: ThreadSanitizer: data race /usr/local/Qt-6.4.0/include/QtConcurrent/qtconcurrentmapkernel.h:163 in QtConcurrent::MappedReducedKernel<QList<TextEditor::HighlightingResult>, QList<LanguageClient::ExpandedSemanticToken>::const_iterator, std::function<TextEditor::HighlightingResult (LanguageClient::ExpandedSemanticToken const&)>, QtPrivate::PushBackWrapper, QtConcurrent::ReduceKernel<QtPrivate::PushBackWrapper, QList<TextEditor::HighlightingResult>, TextEditor::HighlightingResult> >::shouldThrottleThread()

SUMMARY: ThreadSanitizer: data race /usr/local/Qt-6.4.0/include/QtConcurrent/qtconcurrentreducekernel.h:155 in QtConcurrent::ReduceKernel<QtPrivate::PushBackWrapper, QList<TextEditor::HighlightingResult>, TextEditor::HighlightingResult>::runReduce(QtPrivate::PushBackWrapper&, QList<TextEditor::HighlightingResult>&, QtConcurrent::IntermediateResults<TextEditor::HighlightingResult> const&)

      More details can be found in tsan_report8.txt.tgz.

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        1. tsan_report8.txt.tgz
          3.45 MB
          Sona Kurazyan

        Issue Links

          split from

          Bug - A problem which impairs or prevents the functions of the product. QTCREATORBUG-28325 Thread Sanitizer reports multiple data races in Qt Core

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

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            People

              sonakur Sona Kurazyan
              sonakur Sona Kurazyan
              Vladimir Minenko Vladimir Minenko
              Alex Blasche Alex Blasche
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              Dates

                Created:
                Updated:
                Resolved: