[Bug c++/119895] New: List initialization of bitfield enum class member fails

[vittorio.romeo at outlook dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119895

            Bug ID: 119895
           Summary: List initialization of bitfield enum class member
                    fails
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vittorio.romeo at outlook dot com
  Target Milestone: ---

Consider the following code:

    enum class E : int { eA };
    struct S { E i : 2; };
    S f() { return {.i = E::eA}; }

Clang accepts the code, while GCC fails with:

    error: could not convert '{E::eA}' from '<brace-enclosed initializer list>'
to 'S'
        3 | S f() { return {.i = E::eA}; }
          |                           ^
          |                           |
          |                           <brace-enclosed initializer list>

Live example on Compiler Explorer: 
- https://gcc.godbolt.org/z/a33rcxhbf