https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70607
--- Comment #2 from Alexander Voigt <Alexander.Voigt at desy dot de> --- I absolutely agree, that the definition of the std::conj() overloads in C++11 is problematic. However, in my opinion one has to be strict when implementing the standard. Otherwise, people might accidentally write non-portable C++11 code and g++ does not complain.
