Files
mercury/tests/valid/param_mode_bug.m
Peter Wang 75771a9b6e Allow testing of java grade. Requires using `mmc --make' for now.
Branches: main

Allow testing of java grade.  Requires using `mmc --make' for now.
This patch does not attempt to fix test failures.

tests/Mmake.common:
        Delete unneeded Java-specific rule, which was broken.

tests/benchmarks/Mmakefile:
tests/general/Mmakefile:
tests/general/string_format/Mmakefile:
tests/grade_subdirs/Mmakefile:
tests/hard_coded/Mmakefile:
tests/recompilation/Mmakefile:
tests/term/Mmakefile:
tests/valid/Mmakefile:
        Don't deliberately disable tests in java grade.

tests/*.m:
        Add Java foreign code.

        Write dummy procedures instead of abusing `:- external'.
2009-08-14 03:21:55 +00:00

51 lines
1.2 KiB
Mathematica

% rotd-2006-09-18 and before would not compile the following because
% the fact that the inst varsets attached to the clauses and the mode
% declarations are different meant that it couldn't work out which mode
% belonged to which clause. The fix is to allow for a renaming between
% inst variables.
%
% A similar thing occurs with the inst varset attached to foreign_export
% pragmas.
%
:- module param_mode_bug.
:- interface.
:- type list(T) ---> [] ; [ T | list(T) ].
:- pred foo(list(T), list(T)).
:- mode foo(in(I), out(I)) is det.
:- mode foo(out(I), in(I)) is det.
:- pred bar(list(T)::in(I), list(T)::out(I)) is det.
:- implementation.
:- pragma promise_equivalent_clauses(foo/2).
foo(X::in(I), X::out(I)).
foo(Y::out(I), X::in(I)) :-
foo_2(Y, X).
:- pred foo_2(list(T)::out(I), list(T)::in(I)) is det.
:- pragma foreign_proc("C",
foo_2(Y::out(I), X::in(I)),
[promise_pure, thread_safe, will_not_call_mercury],
"
Y = X;
").
:- pragma foreign_proc("Java",
foo_2(Y::out(I), X::in(I)),
[promise_pure, thread_safe, will_not_call_mercury],
"
Y = X;
").
:- pragma foreign_proc("Erlang",
foo_2(Y::out(I), X::in(I)),
[promise_pure, thread_safe, will_not_call_mercury],
"
Y = X
").
:- pragma foreign_export("C", bar(in(I), out(I)), "BAR").
bar(X, X).