[Bug libstdc++/112473] integer_sequence accepts non-integer types

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112473

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Although you couldn't use std::pair as a NTTP until C++20 anyway.