[Bug c++/55254] Warn for implicit conversion from int to char

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55254

--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
Should this go under the existing -Wconversion or a new flag? If the latter,
I'll make this block the new-warning meta-bug.