[QT4] Defining second QTreeWidget in header == segfault?

[ucntcme]

I've got a MainWIndow subclass. In MainWindow.h I have

...
  QTreeWidget  *l_treeWidget;
...

...
  QTreeWidget  *l_treeWidget;
...

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And it works fine. I use it, it works. Beautiful.

Now, I need to add a second one:

...
  QTreeWidget  *l_treeWidget;
  QTreeWidget  *w_treeWidget;
...

...
  QTreeWidget  *l_treeWidget;
  QTreeWidget  *w_treeWidget;
...

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And it segfaults. No need to even try to use it, simply declaring it in the class definition causes a segfault. Any ideas?