> > This is a known bug in the ghc parser. The only fix at the moment is
> > to use happpy without the -a flag.
>
> Ta much. If my recollection is correct, though, last time I had a similar
> problem on our Suns, I tried it on an HP installation, it didn't have
> that problem. (I had another one instead for variety.) So is it
> related to yacc versionitis, hardware, or was I hallucinating?
Yes - it means the yacc parser stack has overflowed, a result of using
right-recursion instead of left-recursion in the grammar.
Different yacc/bison versions have different default stack sizes,
hence you may find that one works where another fails. With bison,
you should be able to recompile the parser with -DYYMAXDEPTH=200000 or
something even silier.
Cheers,
Simon
--
Simon Marlow [EMAIL PROTECTED]
Research Assistant http://www.dcs.gla.ac.uk/~simonm/
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