Function hv_common 

pub unsafe fn hv_common(
    my_perl: *mut PerlInterpreter,
    a: *mut HV,
    b: *mut SV,
    c: *const c_char,
    d: STRLEN,
    e: c_int,
    f: c_int,
    g: *mut SV,
    h: U32,
) -> *mut c_void

hv_common [THX] - macro function