QT 5.2 bug of incorrect calling of QDateTime::fromString() ?

[abshaev]

This code does exactly what to do. Format string does not contain expressions for milliseconds. Try this :

const QString format = "yyyy-MM-dd hh:mm:ss.zzz";

const QString format = "yyyy-MM-dd hh:mm:ss.zzz";

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I have added milliseconds to the format string, but resulting qdatetime is still invalid !))
Debug output is normal.
So I suppose that there is the bug in my Qt or Qt Creator release.

[Lesiok]

What does it mean "is still invalid" ? d2.isValid() returns false or You see somewhere different value than you expect ?

[anda_skoa]

I've changed the second output to

qDebug() << "d2=" << d2 << ", d2.isValid=" << d2.isValid();

qDebug() << "d2=" << d2 << ", d2.isValid=" << d2.isValid();

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and the output is

d2= QDateTime(2016-09-05 12:25:39.000 CEST Qt::TimeSpec(LocalTime)) , d2.isValid= true

d2= QDateTime(2016-09-05 12:25:39.000 CEST Qt::TimeSpec(LocalTime)) , d2.isValid= true

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Cheers,
_

[Lesiok]

So change it to :

qDebug() << "d2=" << d2.toString(format) << ", d2.isValid=" << d2.isValid();

qDebug() << "d2=" << d2.toString(format) << ", d2.isValid=" << d2.isValid();

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P.S.
Look at qdatetime.cpp how operator << for qdebug is working for this class.
In Qt 4.8 it uses QDateTime::toString() for this, in 5.7 QDateTime::toString(QStringLiteral("yyyy-MM-dd HH:mm:ss.zzz t")).
So this is not a bug.