This makes recursive_timed_mutex work for non-pthreads targets where
__gthread_mutex_t and __gthread_recursive_mutex_t are not the same
type. Thanks to Sebastian for the bug report and patch.
Tested powerpc64le-linux, committed to trunk.
commit 852d09122561d301b2980b6f9c97e88c5499006c
Author: J
2015-09-01 Sebastian Huber
PR libstdc++/67408
* include/std/mutex (__timed_mutex_impl): Use __timedlock().
(timed_mutex): Add friend class __timed_mutex_impl. Add
__timedlock().
(recursive_timed_mutex): Likewise.
---
libstdc++-v3/include/std/mutex | 17
