Function newCONSTSUB_flags 

pub unsafe fn newCONSTSUB_flags(
    my_perl: *mut PerlInterpreter,
    a: *mut HV,
    b: *const c_char,
    c: STRLEN,
    d: U32,
    e: *mut SV,
) -> *mut CV

newCONSTSUB_flags [THX] - macro function