https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116063
--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> --- The two members have the same in-memory representation, but transparent_union is explicitly only about function arguments, so Andrew's arguments are very valid I think. It would be nice if we could warn about this, but it might not be possible at all, or not easily doable. There is certainly no requirement for a diagnostic here.
