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This is needed for i686 which doesn't have futex_timed_wait_bitset.
commit 35df5a77f3ad2a35761631928440d2994a9e4bc5
Author: Carlos O'Donell <carlos@redhat.com>
Date: Tue Jun 12 16:17:05 2018 -0400
Fix fallback path in __pthread_mutex_timedlock ().
Fix the typo in the fallback path in __pthread_mutex_timedlock ()
whic hcalls lll_futex_timed_wait (). This is only useful for cases
where the patch is being backported to older distributions where
only lll_futex_timed_wait () is available.
Index: glibc-2.17-c758a686/nptl/pthread_mutex_timedlock.c
===================================================================
--- glibc-2.17-c758a686.orig/nptl/pthread_mutex_timedlock.c
+++ glibc-2.17-c758a686/nptl/pthread_mutex_timedlock.c
@@ -272,7 +272,7 @@ pthread_mutex_timedlock (pthread_mutex_t
/* Block using the futex. */
#if (!defined __ASSUME_FUTEX_CLOCK_REALTIME \
|| !defined lll_futex_timed_wait_bitset)
- lll_futex_timed wait (&mutex->__data.__lock, oldval,
+ lll_futex_timed_wait (&mutex->__data.__lock, oldval,
&rt, PTHREAD_ROBUST_MUTEX_PSHARED (mutex));
#else
int err = lll_futex_timed_wait_bitset (&mutex->__data.__lock,