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by cube13 4824 days ago
I'm confused where the lock that TFA is talking about is in zlib. We've used zlib in a multithreaded environment for years, and haven't had any issues with it, and as far as I can see, there isn't any mutex or semaphore usage in the source code(http://zlib.net/ ) for the library.

It sounds like this is a zlib usage issue more than anything else.