[Bug c++/81660] Add -Wexceptions warning

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81660

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Yup, that was only an option for the existing warning.  We should extend the
warning to detect the case above too.