[Interest] QFile::write(const QByteArray&) does not write all data?

[Steffen Imhof]

Hi Alexander,

On 5/9/2018 11:09 AM, alexander golks wrote:
> hi,
> 
> i recently stumbled over this situation, running on windows 7 using qt-5.6.3.
> when trying to write ~50MB of data, write does not always complete, the file does not contain all data,
> yet no error is returned.
> 
> i always thought, QFile::write(const QByteArray&) is meant to write all data.
> as stated in the documentation for: qint64 QIODevice::writeData(const char *data, qint64 maxSize)
> "When reimplementing this function it is important that this function writes all the data available before returning."
> 
> is this a bug in QFile?

have you seen https://bugreports.qt.io/browse/QTBUG-56616 ?
Your problem sounds a bit like it, although the bug should be fixed in 
Qt 5.6.3.

Maybe check if you are not still runnign against 5.6.2 by some coincidence.


Best regards,
   Steffen Imhof
-- 
Steffen Imhof
Software Developer

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