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2020-02-25libio: Add POSIX user environment pointer to TCBSebastian Huber1-3/+0
The IO library used a POSIX key to store an optional POSIX user environment pointer. This pulled in the POSIX keys support in every application configuration. Add a user environment pointer to the thread control block (TCB) instead. Applications which do not need the POSIX user environment will just get an overhead of one pointer per thread. Close #3882.
2014-03-27privateenv: Use POSIX keys instead of task variables.Christian Mauderer1-0/+3