[Bug c++/59372] accepts-invalid with constexpr function pointer variable as non-type template argument

[richard-gccbugzilla at metafoo dot co.uk]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59372

--- Comment #1 from Richard Smith <richard-gccbugzilla at metafoo dot co.uk> ---
(In reply to Richard Smith from comment #0)
>   X<q> c;
>   X<i()> d;

Sorry, transcription error, these should be 'Y', not 'X'.