Thanks, I think I know the problem now.  I don't know how to phrase it
correctly but I am trying to put a pointer from 1 array into another
without making a copy.  This makes it appear to work until I try to change
the array.  I just need to allocate a new string and put a pointer to it
in the new array.
I will check out that book as well:)

Belinda

On Tue, 10 Dec 2002, Chris Ball wrote:

> >> On 2002-12-10, Belinda M. Giardine <[EMAIL PROTECTED]> said:
>
>    > What is the difference between av_store and av_push?
>
> av_store will store an SV in an array, taking an index to use.  av_push
> is an implementation of Perl's push in XS; it will only push to the last
> element in an array.  I'd imagine that av_push calls av_extend to ensure
> that you're not going outside the boundaries of your array, whereas
> av_store will let you assign out of bounds and cause badness.
>
> I'm not sure if it's been mentioned, but _Extending and Embedding Perl_,
> is a useful XS manual, published by Manning.  It has documentation on
> av_store and av_push with sample XS code, along with the rest of of the
> Perl API and Perl's typemaps.  There's a fair review (though I think
> I've found it far more helpful as an XS beginner than Nick suggests)
> at < http://london.pm.org/reviews/extending-and-embedding-perl.html >.
>
>    > Bizarre copy of ARRAY in aassign at test_gala_query line 3958,
>    > <STDIN> line 14. Segmentation Fault
>
> perldoc perldiag says:
>
>    Bizarre copy of %s in %s
>       (P) Perl detected an attempt to copy an internal value
>       that is not copyable.
>
> .. but I'm afraid I'm not sure where that applies to your code.  Perhaps
> someone else will be able to explain.  :-)
>
> Hope this helps a little,
>
> - Chris.
> --
> $a="printf.net";  Chris Ball | chris@void.$a | www.$a | finger: chris@$a
> |  Q. How do you tell an extrovert techie from an introvert techie?
> |  A. He looks at your feet rather than his own.
>
>

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