https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67239
H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Depends on| |60336 --- Comment #18 from H.J. Lu <hjl.tools at gmail dot com> --- I think it is wrong for C++ to pass empty argument on stack. It should be handled the same way as C. Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60336 [Bug 60336] empty struct value is passed differently in C and C++