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83dc913329
tests/warnings/*.m:
Bring the programming style of these modules up to date,
except where the problem being tested for seems to be related
to the old programming style
In the infinite_recursion test case, add code that we *should*
warn about, but currently don't.
tests/warnings/*.m:
Update the expected outputs to account for the changes in line
numbers, and the fact that the compiler computes the contexts
of (if C then T else E) if-then-elses differently from (C -> T; E)
if-then-else (it takes the context of the "then" vs the context
of the ";").
Delete arg_order_rearrangment.exp2. It was long unused, but
deleting it in CVS would not have allowed us to put it back later.
47 lines
1.2 KiB
Mathematica
47 lines
1.2 KiB
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 tests the warnings you should get when a conjunction unifies the same
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% variable with different function symbols. It is a cut-down version of the
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% predicate proc_info_has_io_state_pair_2 from hlds_pred.m, in which the bug
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% marked below took me a long time to find.
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%
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%---------------------------------------------------------------------------%
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:- module unify_f_g.
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:- interface.
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:- import_module list.
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:- import_module maybe.
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:- pred p(list(int)::in, maybe(int)::in, maybe(int)::out,
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maybe(int)::in, maybe(int)::out) is semidet.
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:- implementation.
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:- import_module int.
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p([], !In, !Out).
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p([H | T], !In, !Out) :-
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( if H < 10 then
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(
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!.In = no,
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!.In = yes(H) % hard to see bug: !.In should be !:In
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;
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!.In = yes(_),
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fail
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)
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else if H > 20 then
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(
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!.Out = no,
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!:Out = yes(H)
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;
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!.Out = yes(_),
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fail
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)
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else
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fail
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),
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p(T, !In, !Out).
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