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  1. Qt
  2. QTBUG-112438

Build issue with visual studio and QT_NAMESPACE

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Details

    • Bug
    • Resolution: Fixed
    • P2: Important
    • 6.5.0
    • 6.5.0 RC
    • Core: Other
    • None
    • Visual studio 2019
      Enable QT_NAMESPACE
    • Windows

    Description

      Following build issue during the build with visual studio:

       

      qvariant.h(54): error C2888: 'const bool qIsRelocatable<QT_AME_NAMESPACE::QVariant>': symbol cannot be defined within namespace 'QT_AME_NAMESPACE'

       

      The problem isn't the code of qvariant.h, it's visual studio compiler issue as explain here.

      The workaround is to change:

      template<> constexpr inline bool QtPrivate::qIsRelocatable<QVariant> = true;

      by:

      namespace QtPrivate 
{
    template<> constexpr inline bool qIsRelocatable<QVariant> = true;
}

      Patch attached.

      Attachments

        1. sources_win.patch
          0.8 kB
          Alexis Eichstadt

        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-112016 [REG 6.5.0beta3 -> RC] namespace build fails on MSVC2019

          • 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; Flaky tests; 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
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              manordheim Mårten Nordheim
              alexiseichst Alexis Eichstadt
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              Dates

                Created:
                Updated:
                Resolved:

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