[Bug libstdc++/107778] handle_contract_violation should reflect _GLIBCXX_VERBOSE

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107778

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to cqwrteur from comment #3)
> Also why the function is not noexcept?

Writing to streams can throw.

If you don't like the default handler you can provide your own.