[Bug c++/79442] GCC 5.4 does not fully support N3652 (Relaxing constraints on constexpr functions)

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79442

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It's true that C++14 support is incomplete in GCC 5, but this is very unlikely
to change. In other words, this bug should be closed as RESOLVED FIXED by GCC
6.