[Bug c++/50785] [C++0x] static constexpr double undefined reference

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50785

--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-10-19 
17:12:11 UTC ---
N.B. we wrote a FAQ entry about this:
http://gcc.gnu.org/wiki/VerboseDiagnostics#missing_static_const_definition