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% vim: ts=4 sw=4 et ft=mercury
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% Regression test:
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% This test ensures that tuple types are written out correctly.
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% The Mercury compiler of 12 Dec 2000 failed to correctly run this test.
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% Author: trd
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:- module write_reg_2.
:- interface.
:- import_module io.

:- pred main(io::di, io::uo) is det.

:- implementation.

:- import_module pair.
:- import_module univ.

main(!IO) :-
    io.write_line(univ((1 - 2)), !IO),
    io.write_line(univ({1, 2, 3}), !IO).