in zmq_poll, signaler.wait aborts

[sourcema]

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Issue description

When calling zmq_poll in my code, I encountered abort problem.

Environment

• libzmq version (commit hash if unreleased): v4.3.3
• OS: Linux os (centos 7)

What's the actual result? (include assertion message & call stack if applicable)

Below is the stack trace: https://imgur.com/WfPZUgi

Here is the console print: https://imgur.com/AuVMG21

Appreciate your help.

Thanks.

[sourcema]

This is the zmq interface that I packaged. Calling cts_zmq_send appears abort. Will this method cause an exception? cts_zmq.txt