my $ssh = login($user, $pass, $host);
test(\$ssh);

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$ssh is already a blessed reference. If you pass it to test() like test(\$ssh), you are passing an unblessed reference to a blessed reference. You should pass it to test like test($ssh).

Update: See also

--MidLifeXis

In reply to Re: Pass object to subroutine. by MidLifeXis
in thread Pass object to subroutine. by tacoking92

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