Destroying an inproc socket aborts CZMQ about czmq HOT 4 CLOSED

I had a similar problem some while ago, is it possible you're calling zsocket_destroy with a void*? You need to call it with a void, unfortunately, that isn't typesafe.

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I think you are right. I will recheck everything to close the issue...

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Do you think that will have sense to write the assert like this?

assert ((rc == 0 || errno == ETERM) && "Are you passing a void** instead of a void*?");

This way user will receive a more informational message in case of having the same stupid bug as me :p

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Hm... why not? It seems to be quite a common error, especially because other *_destroy() functions take double ptrs.

Here's the original issue: #164

I discussed this with Pieter Hintjens a few weeks ago, he wants to add a CZMQ wrapper for zsocket (--> non-void ptr) just like zctx_t etc in the long term, but I don't think this will happen too soon because it'll break most existing code.

Could you submit a pull request?

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