:- module warn_stubs.
:- interface.
:- import_module io.
:- pred main(io::di, io::uo) is det.
:- impure pred foo is det.
:- implementation.
:- pred main1(io::di, io::uo) is det.
:- pred main2(io::di, io::uo) is det.
main1 --> main2.
