[Bug c++/60336] empty struct value is passed differently in C and C++

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60336

--- Comment #23 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to H.J. Lu from comment #22)
> This is a target independent issue.  Clang++ skips empty struct argument
> and g++ passes it. Skip empty struct argument requires middle-end changes.

Except in c++, the struct is non zero in size.