[Development] Broken RNG on AMD Ryzen CPUs affect QTemporaryFile, Qt IFW

[Cristian Adam]

> > > Judging from the screenshots, it's the latest and greatest version
> > > of the Qt installer (qt-opensource-windows-x86-5.14.1.exe) [1]
> >
> > Okay, but what version of Qt is the Qt Installer using? Installer
> > team, can you check?
> >
> 
> Looking into the binary I've found:
> 
> "Build date: Jan  8 2020 IFW Version: 3.2.0, built with Qt 5.12.4."
> 
> https://codereview.qt-project.org/c/qt/qtbase/+/272837 Fix
> QRandomGenerator initialization on AMD CPUs
> 
> fixed it for 5.13 and a there we can see a cherry pick for 5.12:
> https://codereview.qt-project.org/c/qt/qtbase/+/275914
> which went in on 9th of October 2019.
> 
> Qt 5.12.4 was released on 17th of June 2019.
> Qt 5.12.6 was released on 13th of November 2019, and should have the fix.
> 
> Installer needs to use an more up to date Qt.
> 

I've opened up a ticket for the Qt Installer Framework:
https://bugreports.qt.io/browse/QTIFW-1632

Cheers,
Cristian.