Function dw_sys::dwarf_getmacros_off

pub unsafe extern "C" fn dwarf_getmacros_off(
    dbg: *mut Dwarf, 
    macoff: Dwarf_Off, 
    callback: Option<unsafe extern "C" fn(_: *mut Dwarf_Macro, _: *mut c_void) -> c_int>, 
    arg: *mut c_void, 
    token: ptrdiff_t
) -> ptrdiff_t