#define XPUSHs(s) STMT_START { EXTEND(sp,1); (*++sp = (s)); } STMT_END

##</code><code>##

SV* my_sv = newSViv(12345);
XPUSHs(sv_2mortal(my_sv));

##</code><code>##

SV* my_sv = newSViv(12345);
mXPUSHs(my_sv);