you will see that blessed things cannot be shared
No, shared things can't be (usefully) blessed, which is quite different. This is valid code: 
my $x = bless [], 'X';
share $x;

[download]
The main problem with shared objects is that their destructor currently gets called multiple times, once per thread.

Dave.

In reply to Re^2: Annoying threads share problem! by dave_the_m
in thread Annoying threads share problem! by Ace128

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