Push and Pop on Infinite lists

[Stevan Little]

I am working on edge cases and error cases for some of the t/builtin/ 
tests.

I know its a silly thing to do, but how should push and pop behave with 
(0 .. Inf) lists?

I read through this thread:
        http://www.mail-archive.com/perl6-all@perl.org/msg39891.html
But I did not see an "answer", only various suggestions.
Currently in Pugs these two examples:
pugs -e 'my @p = (0 .. Inf); push @p, 10;'
pugs -e 'my @p = (0 .. Inf); pop(@p);'
will go on forever (as you would expect it to do).
Is this the correct behavior? Or should it return Inf or somesuch? Or 
even maybe error?

Thanks,
Stevan