[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 #21 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Dávid Bolvanský from comment #20)
> Clang implemented [0] this diagnostic under -Wxor-used-as-pow.
> From user perspective it would be reasonable if GCC follows this naming.
> 
> [0] https://reviews.llvm.org/D63423

ok I retract my previous support for -Wexclusive-or and now back
-Wxor-used-as-pow instead.