[Bug libstdc++/119116] std::use_facet exception message needs more details

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119116

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
There is no constructor for std::bad_cast that takes a custom string.