pub unsafe extern "C" fn dwfl_getdwarf(
    arg1: *mut Dwfl,
    callback: Option<unsafe extern "C" fn(arg1: *mut Dwfl_Module, arg2: *mut *mut c_void, arg3: *const c_char, arg4: Dwarf_Addr, arg5: *mut Dwarf, arg6: Dwarf_Addr, arg7: *mut c_void) -> c_int>,
    arg: *mut c_void,
    offset: isize
) -> isize