Hi!

Consider this (in P.pm): 

package P;

use strict;

package P1;
@P1::ISA = qw(P1);

1;

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So within a file (containing package P) we have another package P1 that adds itself to it's own ISA.

In Perl 5.8.8 a "perl -MP -e1" does not complain, however Perl 5.10 refuses (and rightly so in my opinion) to compile it.

So evidently 5.10 has gotten smarter (which is a good thing) but unfortunately there are CPAN-modules (Parse::Lex to be specific) that exhibit exactly this problem.

This means that I had to change the source-code of a CPAN-module to make it run under 5.10 (ok - I already had to change the code to make it run under 5.8.8 but I mean just by upgrading to 5.10 I had to change it yet again...).

My question now is: Is there any systematic overview on which CPAN-modules may have a problem when running under 5.10?

Many thanks!

In reply to recursive dependencies in 5.8.8 vs 5.10 and CPAN by morgon

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