QFileSystemModel setrootpath segfault

On QfileSystemModel in a cpp file

setRootPath(QDir::homePath()) cause segfault on Android.

on android QDir::homePath() return :

"/data/user/0/org.qtproject.example.ERP/files"

This code is working on Windows and Linux platform.

EDIT: this code works on Lubuntu 16.04, but crash on Ubuntu 18.10. So this bug affect also Ubuntu 18.10

Message on Qt Creator is :

F libc : Fatal signal 11 (SIGSEGV), code 1, fault addr 0x0 in tid 27772 (qtMainLoopThrea)

EDIT: After some tests, the problem was on my main.cpp( it's QML projet):

I was using QGuiApplication app(argc, argv);

you have to use QApplication app(argc, argv);

SOLVED sorry