Re: `set!' of generated temporary in macro expansion causes warning

[Andy Wingo]

Hi,

On Mon 13 Jun 2011 14:10, Andreas Rottmann <address@hidden> writes:

> From: Andreas Rottmann <address@hidden>
> Subject: Silence warnings for variables created by `generate-temporaries'

Applied, also having regenerated psyntax-pp.scm.

FWIW the procedure there is that, after having modified psyntax.scm,
recompiled everything, and all is well, then you cd module/; make
ice-9/psyntax-pp.scm.gen; make.

Thanks for the report and fix, and thanks for the help, Stefan.

Andy

p.s.  Regarding hygienically introducing identifiers, I had an idea.
>From a mail I sent to scheme-reports:

    To recap:

       (define-syntax define-const
         (syntax-rules ()
           ((_ name val)
            (define t val)
            (define-syntax name (syntax-rules () ((_) t))))))

    Guile currently does not make the generated toplevel definition "t" have
    a fresh name.  It would be nice if it could but it can't be a really
    random name -- it needs to be predicatable.

    Well why not have the name of "t" be "t" plus some string which depends
    only on the incoming form -- like its hash value.  (Or the outgoing
    form; the considerations are different but similar.)

    That way you do preserve the "compatible recompilation" aspect, trading
    off true secrecy, but hey.  Oh well.

This would obviously be for master / 2.2 and not 2.0.
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