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  1. Qt
  2. QTBUG-86246

QVariantMap conversion to QJsonDocument behaviour change

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Details

    • Bug
    • Resolution: Duplicate
    • Not Evaluated
    • None
    • 5.15.0
    • Core: Other
    • None

    Description

      a QVariantMap keypair that has value of QVariant is ignored when converting to QJsonDocument.

       

      QVariantMap m{{"toto", QVariant{}}}; 

      qDebug() << m;  // m contains toto with the null QVariant

      qDebug() << QJsonDocument::fromVariant(m); // this one is empty

       

      I was trying to port from Qt 5.12 to 5.15 and that is a real bummer.

       

      Is this behaviour change intended?

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          is replaced by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-84739 Regression with dataloss

          • 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

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              sonakur Sona Kurazyan
              thierryb Thierry Bastian
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                Updated:
                Resolved: