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  1. Qt
  2. QTBUG-93737

QVariant cannot convert long/ulong to string

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      Consider a simple example:

          const auto tryType = [](int targetTypeId)
    {
        auto v = QVariant::fromValue(123);
        Q_ASSERT(v.convert(targetTypeId));
        qDebug() << v << "can convert to string:" << v.canConvert(QMetaType::QString);
    };

    tryType(QMetaType::Short);
    tryType(QMetaType::UShort);
    tryType(QMetaType::Int);
    tryType(QMetaType::UInt);
    tryType(QMetaType::Long);
    tryType(QMetaType::ULong);
    tryType(QMetaType::LongLong);
    tryType(QMetaType::ULongLong);

      We can expect to see true for all types but instead we see:

      QVariant(short, 123) can convert to string: true
      QVariant(ushort, 123) can convert to string: true
      QVariant(int, 123) can convert to string: true
      QVariant(uint, 123) can convert to string: true
      QVariant(long, 123) can convert to string: false
      QVariant(ulong, 123) can convert to string: false
      QVariant(qlonglong, 123) can convert to string: true
      QVariant(qulonglong, 123) can convert to string: true

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            thiago Thiago Macieira
            nkrupenko.nvidia Nikita Krupenko
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              Created:
              Updated:
              Resolved:

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