[Bug c++/58412] C++11 : numeric_limits::stuff must be constexpr

[glisse at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58412

--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
I think you forgot () after quiet_NaN and got confused by the error message.