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1f6d83692a
tests/hard_coded/*.m:
Update programming style, unless doing so would change
the meaning of the test, in particular:
- use '.' as a module qualifier in place of '__'
- use {write,print}_line where appropriate
- use if-then-else in place of C -> T ; E
- use state variables in place of DCGs
tests/hard_coded/dir_test.m:
Document what the expected outputs correspond to.
Use a uniform module qualifier in the output.
tests/hard_coded/dir_test.exp*:
Conform to the above change.
40 lines
951 B
Mathematica
40 lines
951 B
Mathematica
%---------------------------------------------------------------------------%
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% vim: ts=4 sw=4 et ft=mercury
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%---------------------------------------------------------------------------%
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%
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% This is a regression test.
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%
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% The Mercury compiler of 27/10/2000 failed this test due to overeager
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% specialization of unifications involving no-tag types with user-defined
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% equality.
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:- module user_defined_equality2.
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:- interface.
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:- import_module io.
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:- pred main(io::di, io::uo) is cc_multi.
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:- implementation.
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:- import_module std_util.
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:- type foo ---> foo(int)
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where equality is foo_equal.
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:- pred foo_equal(foo::in, foo::in) is semidet.
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foo_equal(_, _) :-
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semidet_succeed.
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main(!IO) :-
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( if unify_no_tag(foo(1), foo(2)) then
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io.write_string("yes\n", !IO)
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else
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io.write_string("no\n", !IO)
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).
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:- pred unify_no_tag(T::in, T::in) is semidet.
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:- pragma type_spec(unify_no_tag/2, T = foo).
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unify_no_tag(T, T).
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