[issue10340] asyncore doesn't properly handle EINVAL on OSX

[Stephen Hansen]

Stephen Hansen <me+python at ixokai.io> added the comment:

I can verify the problem exists in asyncore at release27-maint on the mac, and that the below patch fixes it.

After applying, I ran a full regrtest and nothing new broke.

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<http://bugs.python.org/issue10340>
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