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The change in r14-905-g3b7cb33033fbe6 to disable the use of pthread_mutex_clocklock when TSan is active assumed that the _GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK macro was always checked with #if rather than #ifdef, which was not true. This makes the checks use #if consistently. libstdc++-v3/ChangeLog: PR libstdc++/121496 * include/std/mutex (__timed_mutex_impl::_M_try_wait_until): Change preprocessor condition to use #if instead of #ifdef. (recursive_timed_mutex::_M_clocklock): Likewise. * testsuite/30_threads/timed_mutex/121496.cc: New test. Reviewed-by: Tomasz Kamiński <tkaminsk@redhat.com>
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