Objects referencing self/each other produce infinite output

[ingmarschuster]

Objects containing refs to each other (or just self-referential objects) produce infinite output/stack overflows. Consider the following example.

type SelfRef
    sr::SelfRef

    function SelfRef()
        a = new()
        a.sr = a
        return a
    end
end

The bug gets exposed by

a = SelfRef()

The problem here seems to be mainly that printing the value does not check for cycles.

[ivarne]

This issue has been raised multiple times before #3066, #25, #1139. I think this is a reminder that someone should read through the discussions implement a solution that is good enough to get merged.

[ingmarschuster]

Thanks a lot for pointing this out, indeed I havent searched for previous reports.

[pao]

Closing in favor of existing issues.