Long words get cut in QMessageBox because of QLabel implementation detail

Scenario:
QMessageBox with a message containing a long word, e.g. a file name plus path.

Expected result:
The complete text is visible.

Actual result:
The long word is cut at the screen border if the dialog is not wide enough, e.g. on Maemo5 where the message box is quite slim with a big font.

Reason:
QLabel is using QTextOption::TextWordWrap when wordWrap=true instead of QTextOption::WrapAtWordBoundaryOrAnywhere around line QLabel.cpp:1483