Paul Makepeace paulm at paulm.com
Mon Jan 7 13:48:03 GMT 2008

On 1/7/08, Dirk Koopman <djk at tobit.co.uk> wrote:
> Has anybody tried perl 5.10 out on some real code? I appear to be
> getting the odd problemette...
> For instance, try this:-
> package fred;
> our @ISA = qw(fred);
> 1;
> Although it is a manifestly silly error, I don't think that it merits a
> (new) fatal error like this:-
> "Recursive inheritance detected in package 'fred' at fred.pm line 3."
> What worries me more is the implication that something fundamental has
> changed in the way that inheritance works.

What's changed, aiui, is that it's caught at compile time rather than
runtime. It was still an error before, it's just that you didn't hear
about it until you sent the engine into a spin.


> I had some code written many years ago which happened to have the
> package name left in @ISA (done before I had *any* understanding)
> together with its real parent class name. This has worked quite happily
> since 5.00503 -> 5.8.8. So it was a bit of a surprise to get a fatal
> error in 5.10.
> And whilst I am about it, IO::Socket::INET6 and its dependencies do not
> install without force in 5.10 and, worse, chucks out 3 or 4 redefinition
> warnings everytime one launches a script using it.

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