[m-rev.] for review: fix singleton variable warning problem

[Fergus Henderson]

On 30-May-2002, Peter Ross <pro at missioncriticalit.com> wrote:
> tests/valid/Mmakefile:
> tests/valid/no_warn_singleton.m:
>     A test case.

Whatever fix is chosen here, I think it would also be a good idea
to add one or more test cases to tests/warnings to test that
we issue proper singleton variable warnings for procedures
defined using a combination of `pragma foreign_proc'
and Mercury clauses (regardless of which is first or last).

If the test case doesn't pass, then it can be added but not
enabled, with an XXX comment in tests/warnings/Mmakefile.

-- 
Fergus Henderson <fjh at cs.mu.oz.au>  |  "I have always known that the pursuit
The University of Melbourne         |  of excellence is a lethal habit"
WWW: <http://www.cs.mu.oz.au/~fjh>  |     -- the last words of T. S. Garp.
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