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https://github.com/Mercury-Language/mercury.git
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add253af9f
compiler/module_imports.m:
Implicitly import stream.m if the module being compiled may call
stream.string_writer.format.
compiler/simplify_proc.m:
Keep stream.put around until format_call.m may need it.
compiler/pred_table.m:
If looking for a predicate fails, generate an error message that mentions
the module name part of the fully qualified predicate name being
looked for.
tests/hard_coded/stream_put_bug.{m,exp}:
New test case, based on one contributed by sebgod (the filer of
Mantis bug 369).
tests/hard_coded/Mmakefile:
Enable the new test case.
36 lines
1017 B
Mathematica
36 lines
1017 B
Mathematica
% vim: ts=4 sw=4 expandtab ft=mercury
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%
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% This is a regression test for Mantis bug #369.
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%
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% The bugs were that (a) for a module like this one, which calls
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% stream.string_writer.format but does not *explicitly* import stream.m,
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% the compiler did not *implicitly* import stream.m, and (b) it also
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% did not protect stream.put from being deleted by dead predicate elimination.
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:- module stream_put_bug.
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:- interface.
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:- import_module io.
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:- interface.
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:- pred main(io::di, io::uo) is det.
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:- implementation.
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:- import_module list.
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:- import_module string.
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:- use_module stream.string_writer.
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:- use_module string.builder.
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main(!IO) :-
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some [!State] (
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!:State = string.builder.init,
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stream.string_writer.format(string.builder.handle,
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"answer to life universe everything %d\n", [i(42)], !State),
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stream.string_writer.format(string.builder.handle,
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"bug %s\n", [s("not present")], !State),
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io.write_string(string.builder.to_string(!.State), !IO)
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).
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