QDateTime ASSERT

ivanicy

Hello!

I am using a QDateTime. I was using for days without problems but today, I have this error in debug mode:

ASSERT: "byId[size_t(id)] == nullptr" in file time\qcalendar.cpp, line 103
Debug Error!

And this are the lines that are failing:

QString sCurrentTime = QDateTime::currentDateTime().time().toString("hh:mm:ss");
ui->labelStartTimeValue->setText(sCurrentTime);

What I am doing wrong?

Thank you very much!

Christian Ehrlicher

Please provide a minimal, compilable example and a valid backtrace. The assert there should not happen - looks like a calendar backend is loaded twice.
We also need your OS and Qt version.

SylvainM

I encountered this issue as well. The entry point was QDate::fromString. This method was called inside a QThread so maybe this assertion is related to concurrent access.

OS : Windows 7
QT version : 5.15 x64

Christian Ehrlicher

I would say it's related to https://codereview.qt-project.org/c/qt/qtbase/+/309673

SylvainM

It seems related yes. It says the fix has been merged and there is a line :
Pick-to: 6.0 5.15

Should this mean that the version 5.15 is now patched with this fix?

Christian Ehrlicher

@SylvainM Yes, 5.15.3 will contain the fix.