[Bug libstdc++/113200] std::char_traits::move is not constexpr when the argument is a string literal

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113200

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Why does GCC accept this reduced version, which is invalid for the same reason
as the original?

#include <string>

constexpr int N = 5;
struct S
{
    char data_[ N ];

    constexpr S( char const* p )
    {
        std::char_traits<char>::move( data_, p, N );
    }
};

constexpr S s( "test" );


Clang rejects it the same way.