New-style QObject::connect fails with QPointer<T> (regression)

Attached test case is reduced from KDE projects "skrooge" and "kbibtex" which fail to build with today's 5.6 branch of qtbase, but apparently build on an older branch (5.4?).

The documentation for QPointer::operator T * () const says: "Because of this function you can pass a QPointer<T> to a function where a T * is required."

This does not work for the new-style connect in the test case. Changing "test" to "test.data()" is a workaround, but since this seems to be a regression, I am not sure if it is a bug that needs to be fixed in Qt.