Re: [boost] [gsoc17] Project1: Static map: Can I implement the competency test in g++-7?

This is a long known issue. You should implement your own string comparison routine which is constexpr. As you mention, Boost's string_view is constrained by the STL's implementation of char_traits.

Would it be OK to implement our own constexpr char_traits(just replace ::compare, ::length), then use boost::basic_string_view as our CONSTEXPR_STRING_VIEW and compare views with constexpr boost::string_view::compare(a, b) == 0? This way seems to work on my g++-6 which prevents reinventing the wheel. -- --------------------------------- Vic Luo Shanghai Jiaotong University Key fingerprint 0x98809ca08bf5662a