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88047bbb45
tests/general/float_test.exp3:
tests/general/float_test.m:
tests/general/read_dir_regression.exp4:
tests/general/read_dir_regression.m:
tests/hard_coded/remove_file.exp2:
tests/hard_coded/remove_file.m:
Delete Erlang backend specific expected outputs.
tests/hard_coded/Mmakefile:
tests/hard_coded/erlang_deconstruct.exp:
tests/hard_coded/erlang_deconstruct.m:
tests/hard_coded/existential_list.exp:
tests/hard_coded/existential_list.m:
tests/valid/Mmakefile:
tests/valid/erl_ite_vars.m:
tests/valid/zf_erlang_bug.m:
Delete erlang target specific tests.
tests/*:
Delete Erlang foreign procs and foreign types.
76 lines
2.8 KiB
Mathematica
76 lines
2.8 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ft=mercury ts=4 sw=4 et
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%---------------------------------------------------------------------------%
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%
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% This is a regression test. Versions of the compiler before 2019 April 7
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% used to get a compiler abort for this module. The reason was that
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%
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% - We first inserted the declaration of the predicate named "mark"
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% near the bottom of the file into the predicate table.
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%
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% - Later we tried to insert the declaration of the class method predicate
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% named "mark" near the top of the file into the predicate table.
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% This insertion failed, but it nevertheless returned a valid pred_proc_id
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% to the code handling the addition of the class methods to the HLDS.
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% This was the pred_proc_id resulting from the first, successful insertion.
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%
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% - The compiler expects every predicate that represents a class method
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% to have at least one universal typeclass constraint on it, this being
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% the constraint implicit in its nature as a typeclass method. The code
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% that checks typeclass constraints aborts if it does not find it.
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% In this case, it did not find it, since we added into the pred_info
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% we constructed it for the second, unsuccessful insertion, but this
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% never made it into the HLDS.
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%
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:- module bug476.
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:- interface.
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:- import_module io.
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%---------------------------------------------------------------------------%
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:- typeclass input_stream(T) where [
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pred mark(T::in, int::in, io::di, io::uo) is det
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].
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%---------------------------------------------------------------------------%
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:- type jinput_stream.
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:- instance input_stream(jinput_stream).
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%---------------------------------------------------------------------------%
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%---------------------------------------------------------------------------%
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:- implementation.
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:- import_module require.
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%---------------------------------------------------------------------------%
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:- pragma foreign_type("C", jinput_stream, "void *").
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:- pragma foreign_type("C#", jinput_stream, "object").
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:- pragma foreign_type("Java", jinput_stream, "java.io.InputStream").
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%---------------------------------------------------------------------------%
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:- instance input_stream(jinput_stream) where [
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pred(mark/4) is input_stream_mark
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].
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%---------------------------------------------------------------------------%
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% The name of this declaration is INCORRECT.
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% The bug was tickled by the coincidence between the name of this predicate
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% and the class method predicate above.
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%
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:- pred mark(jinput_stream::in, int::in, io::di, io::uo) is det.
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input_stream_mark(_, _, _) :-
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error("NYI mark for InputStream").
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%---------------------------------------------------------------------------%
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:- end_module bug476.
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%---------------------------------------------------------------------------%
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