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  1. Qt
  2. QTBUG-49008

[REG: 5.4->5.5] Wrong looking behaviour with QDateTime::addDays over DST switch

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    • 81858bf1722081d99fdea72f55e67c04c5bb3d92

    Description

      When on Europe/Helsinki timezone, these two seemingly similar programs give different results:

          const QDateTime fromUTC = QDateTime(QDate(2015, 3, 28), QTime(4, 0, 0), Qt::UTC).toLocalTime();
    qDebug() << fromUTC.addDays(1).toString();

// "Sun Mar 29 07:00:00 2015"

          const QDateTime localtime = QDateTime(QDate(2015, 3, 28), QTime(6, 0, 0), Qt::LocalTime);
    qDebug() << localtime.addDays(1).toString();

// "Sun Mar 29 06:00:00 2015"

      This was introduced by commit: 3b36a550b04fbdfca835002c9c090be8099afa7f

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            Eddy Edward Welbourne
            poikelin Joni Poikelin
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              Created:
              Updated:
              Resolved:

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