In my opinion, DESTROY methods should not have side effects like changing $@ (or $? or $!), and if they do, it is a bug!

That's an opinion shared by others, but other people disagree. See for instance a thread about this on p5p this summer. Note that if DESTROY wouldn't propagate changes to $@, $! or $? DESTROY would be different from other functions, because $@, $! and $? behave differently. It also means you can have code that throws an exception, but afterwards $@ isn't set (your local $@ suffers from the same problem): 

    sub one::DESTROY {
        die "foo\n";
    }
    eval {my $x = bless [], 'one'};
    say "\$\@ = $@";
    __END__
    $@ =     (in cleanup) foo

[download]
but 
    sub one::DESTROY {
        local $@;
        die "foo\n";
    }
    eval {my $x = bless [], 'one'};
    say "\$\@ = $@";
    __END__
    $@ =

[download]
This is far from ideal as well, and I doubt it's much better than the current situation.

People have suggested a new variable, @@, where new errors get pushed onto, instead of having them override $@. But noone has written a patch to actually do this.

In reply to Re^8: Net::SSH2 test connection to remote host by JavaFan
in thread Net::SSH2 test connection to remote host by james_

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