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  1. Qt
  2. QTBUG-82403

MSVC errors out on recent exported extern template QMetaTypeForType

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Details

    • Bug
    • Resolution: Unresolved
    • P3: Somewhat important
    • None
    • 6.0
    • Core: Object Model
    • None
    • Windows

    Description

      MSVC will print warnings when encountering the declarations and in developer-build it will error-out.
      An example of one of the errors:

      warning C4910: 'QtPrivate::QMetaTypeForType<bool>': '__declspec(dllexport)' and 'extern' are incompatible on an explicit instantiation

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-82945 Reg->Qt 6/963c47aece12a0025707c76f6f8cb3de306752b8/MSVC2019/Windows: Crashes in property system

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
          For Gerrit Dashboard: QTBUG-82403
          # Subject Branch Project Status CR V
          291500,4 MSVC: Suppress warning C4910 for exported extern templates dev qt/qtbase Status: MERGED +2 0

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              Unassigned Unassigned
              manordheim Mårten Nordheim
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              Dates

                Created:
                Updated:

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