Files
mercury/tests/tabling/consumer_in_solutions.m
2018-07-08 23:20:52 +02:00

44 lines
885 B
Mathematica

%---------------------------------------------------------------------------%
% vim: ts=4 sw=4 et ft=mercury
%---------------------------------------------------------------------------%
%
% This test case checks whether we get incorrect answers
% when a consumer gets suspended inside solutions.
:- module consumer_in_solutions.
:- interface.
:- import_module io.
:- pred main(io::di, io::uo) is det.
:- implementation.
:- import_module int.
:- import_module list.
:- import_module pair.
:- import_module solutions.
:- pragma require_feature_set([memo]).
main(!IO) :-
solutions(q, Solns),
io.write(Solns, !IO),
io.write_string("\n", !IO).
:- pragma minimal_model(q/1).
:- pred q(pair(int, list(int))).
:- mode q(out) is nondet.
q(X - L) :-
p(X),
solutions(p, L).
:- pragma minimal_model(p/1).
:- pred p(int).
:- mode p(out) is nondet.
p(1).
p(2).
p(3).