[Bug c++/93652] -Wconversion gives false warning with bitwise operations on reference types returned from function

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93652

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed by r10-7344:
    c++: Handle COMPOUND_EXPRs in get_narrower and
warnings_for_convert_and_check [PR91993]