using a model view on a "local" dialog causes a seg fault on close

[knobby67]

Hi All,
I open a "local" dialog from my mainwindow. Using

Add_Dialog madd_dialog;
 
    madd_dialog.setModal( true );
  madd_dialog.exec( );

Add_Dialog madd_dialog;

    madd_dialog.setModal( true );
  madd_dialog.exec( );

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everything works fine however when I go to close it I get a segmentation fault.
On commenting out everything except the constructor and de-constructor I've found that putting a model in my class produces the crash, so my class shows

private:
    Ui::Add_Dialog *ui;
 
//    QStandardItemModel model;

private:
    Ui::Add_Dialog *ui;

//    QStandardItemModel model;

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if I comment out model it works fine. I presume this is something to do with memory however am not knowledge of Qt is not enough to work out the issue.

Also related to this does the debugger have a backtrace like ddd so when I get a seg fault I can see what's causing it.


Thanks