[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 #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Ah it changed in C++20, previously it said "T shall be an integral type" so was
just UB.