[Qlandkartegt-users] Compile error regarding QRegExp

[teq2 <geo...@gb...>]

I get the following compile error when I compile the actual development 
version of QMS  (did a fresh hg clone before)

[  1%] Building CXX object src/CMakeFiles/QMS.dir/map/mapsforge/types.cpp.o
In file included from /usr/lib64/qt5/include/QtCore/qnamespace.h:37:0,
                  from /usr/lib64/qt5/include/QtCore/qobjectdefs.h:41,
                  from /usr/lib64/qt5/include/QtCore/qobject.h:40,
                  from /usr/lib64/qt5/include/QtCore/QObject:1,
                  from 
/home/gunther/Downloads/QMapShack/src/helpers/Signals.h:22,
                  from 
/home/gunther/Downloads/QMapShack/src/map/CMapPropSetup.cpp:19:
/home/gunther/Downloads/QMapShack/src/helpers/Signals.h: In Funktion 
»void X______________BlockAllSignals______________X(QObject*)«:
/home/gunther/Downloads/QMapShack/src/helpers/Signals.h:26:71: Fehler: 
falsche Benutzung des unvollständigen Typs »class QRegExp«
      foreach(QObject * obj, parent->findChildren<QObject*>(QRegExp(".*")))
^
In file included from /usr/lib64/qt5/include/QtCore/qobject.h:41:0,
                  from /usr/lib64/qt5/include/QtCore/QObject:1,
                  from 
/home/gunther/Downloads/QMapShack/src/helpers/Signals.h:22,
                  from 
/home/gunther/Downloads/QMapShack/src/map/CMapPropSetup.cpp:19:
/usr/lib64/qt5/include/QtCore/qstring.h:69:7: Fehler: 
Vorwärtsdeklaration von »class QRegExp«
  class QRegExp;

translation of the first error would be like "improper use of incomplete 
type class QRegExp"

QT5 is version 5.4.2, I didn't have that error before.

any hints?
Thanks Gunther