[Bug c++/82165] Operator overloading doesn't work with enum bit fields

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82165

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
IIRC bitfield rvalues get promoted to 'int' before overload resolution applies
but I may be wrong.  enum bitfields may also be a GNU extension.