Github user PSUdaemon commented on the pull request:
https://github.com/apache/trafficserver/pull/571#issuecomment-219586100
Missing the `optarg = NULL` in the global case on purpose?
Also, I think we do want that `ifdef` around the `optind`. And I looked it
up, we need to include `limits.h` and test for `__GLIBC__` on modern (post
1996) glibc's
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