[Bug]: Electron crash when call qt gui

[HuangDeFa]

Preflight Checklist

• I have read the Contributing Guidelines for this project.
• I agree to follow the Code of Conduct that this project adheres to.
• I have searched the issue tracker for a feature request that matches the one I want to file, without success.

Electron Version

12.0.5

What operating system are you using?

macOS

Operating System Version

macOs Majave 10.14.6

What arch are you using?

x64

Last Known Working Electron version

No response

Expected Behavior

I would like to use the ffi-napi to call a dylib that builded by qt , then invoke the lib method should open a dialog(qt gui).

The code like:

JS part
`
const {Library:FFLib} = require('ffi-napi')

const lib = FFLib("resource/vendor/libdyLibDemo.dylib",{
"test":['void',[]],
})
lib.test()
`

QT part

`
#include
#ifdef __cplusplus
extern "C" {
void test(){
char *argv[0] = {};
int argc = 1;
qDebug() << "start checkLib";
QApplication a(argc, argv);
QDialog dl;
dl.setWindowTitle("Test Win");
dl.show();
dl.raise();
dl.exec();
}

#ifdef __cplusplus
}
#endif

`****

Actual Behavior

when use ffi-napi to call the lib method ,the native qt dialog can show but electron seems unresponsive , the menus disappear except the app name and the paste operation can not work for input element , then click the app name in menu bar it will crash or unresponsive

Testcase Gist URL

No response

Additional Information

As I test that , once run ffi-napi to invoke dylib method which in native qt part create QApplication (
the code like
void test(){ QApplication a(argc,argv); }
), in electron main process will make crash.

If someone hit this case , please kindly comment the solution , thanks advance.

[jkleinsc]

Thanks for reaching out!

Given the warning from ffi-napi:
WARNING: node-ffi-napi assumes you know what you're doing. You can pretty easily create situations where you will segfault the interpreter and unless you've got C debugger skills, you probably won't know what's going on., you will probably have better luck with this question at one of the links at the project's Community page -- in particular, be sure to give the Electron Discord server a try.

I hope this helps!