I am seeing a repeatable crash before entering main with debug builds against a static build of Qt 5.15.

Software versions:

• Qt 5.15.0 Commercial
• Windows 10, OS build 19041.450
• MSVC 2019 with CL version 19.26.28806 for x64
• QMAKE/jom under Qt Creator 4.12.1 (as supplied with the commercial installer).

I am using the following configure line to build Qt:

configure -commercial -debug-and-release -release -static -static-runtime -optimize-size  -schannel -qt-zlib -qt-libpng -qt-libjpeg -nomake examples -prefix C:\opt\Qt-5.15.0-static\ 

Here's my qmake.pro file:

TEMPLATE = app
QT += core
CONFIG += c++14
SOURCES = main.cpp
TARGET = static_init_issue

And here is my main:

#include <QtPlugin>
int main() {
    return 0;
} 

The crash occurs in QArrayData::deallocate after calling qRegisterStaticPluginFunction to initialize QWindowsVistaStylePlugin (under static initialization in Windows initterm function). 

I note that the call to staticPluginList in qRegisterStaticPluginFunction returns a null pointer and that this function is called before anything in in the macro Q_GLOBAL_STATIC(StaticPluginList, staticPluginList) is called.  The issue appears to be related to order of static initialization across compilation units.