[Bug c++/90885] GCC should warn about 2^16 and 2^32 and 2^64

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90885

--- Comment #16 from Eric Gallager <egallager at gcc dot gnu.org> ---
I think David's original suggestion of -Wexclusive-or is the best name so far.