[Bug c++/111895] error: invalid operands of types 'unsigned char:2' and 'int' to binary 'operator!=' on enum class bitfield cast to bool

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111895

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2023-10-20
             Status|UNCONFIRMED                 |NEW
           Keywords|                            |rejects-valid

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Reduced:

    enum class o_field : unsigned char { no, yes, different_from_s };
    struct fields {
      o_field o : 2;
    };

    bool func(fields f) { return static_cast<bool>(f.o); }

EDG also accepts this.

GCC fails with the same error since 4.8.1 (and before that we didn't allow the
non-integral bit-field so failed for a different reason).