[Bug c++/57248] string parameter to constexpr functions

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57248

--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Thanks Daniel. In fact - I should have attached some code - nothing about
<tuple> & co matters, you can remove it completely and replace std::get with,
say,

template <int N>
constexpr int get() { return 1; }