Bugs - perl.perl6.compiler

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Autrijus Tang

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More options Mar 4 2005, 11:04 am

Newsgroups: perl.perl6.compiler

From: autri...@autrijus.org (Autrijus Tang)

Date: Sat, 5 Mar 2005 00:04:16 +0800

Local: Fri, Mar 4 2005 11:04 am

Subject: Re: [PUGS] Bugs

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On Wed, Mar 02, 2005 at 03:17:03PM -0500, Stevan Little wrote:
> I have managed to track down two different bugs/issues with PUGS. I
> explain them here in detail with examples, and todo_* tests for them
> are included in the following test files:
> t/op/shift.t
> t/op/pop.t
> t/op/push.t
> t/op/unshift.t

The double evaluation bug has been fixed today. It was result of a
misunderstanding of the role of $_ when the subroutine body does
not mention $_, but makes use of slurpy arrays (as is the default with
@*_), and has no invocants when actually used; in that case $_ is
probably best undefined (or bound to the first non-invocant argument?
Can we get a ruling?); I have stopped evaluation for $_ in that case for
now, which solves the double evaluation bug.

Thanks,
/Autrijus/

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