Just add AUTOLOAD to handle not implemented methods:

sub AUTOLOAD {}
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Take a look in perltie to implement all the other methods if you really want to make a full IO redirection through tie.

Here's a list of the other methods:

sub PRINTF {}

sub READ {}
sub READLINE {}
sub GETC {}
sub WRITE {}

sub FILENO {}

sub STORE {}
sub FETCH {}

sub CLOSE {}
sub DESTROY {}
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