I've got a crash using the QFileSystemModel. Our Application uses two QFileSystemModel Objects with different root directories. The first rootDir is the current user's desktop ($HOME/Desktop). The second rootDir uses the $HOME/Pictures directory.

However, if I create or delete a directory in the $HOME dir while our application is running, the application crashes. Please have a look at the attached crash report (especially Thread 0 and Thread 9). We are using Qt 4.7.1. It seems interesting that $HOME is the parent directory of the two root directories mentioned before.

so in pseudo code, the crash works this way:

QFileSystemModel *m1 = new QFileSystemModel();
m1->setRootPath("/users/ralf/Desktop");
QTreeView * v1 = new QTreeView();
v1->setModel(m1);

QFileSystemModel *m2 = new QFileSystemModel();
m2->setRootPath("/users/ralf/Pictures");
QTreeView * v2 = new QTreeView();
v2->setModel(m2);
...
QDir().makeDir("/users/ralf/crashme"); // Program crashes in this line.

You may also crash the Program from the outside by creating the directory eg. from the command line.