------ This is output for >= glibc 2.4 ------
---------------- pthread_create/join ----------------
---Thread-Announcement------------------------------------------
Thread #x is the program's root thread
---Thread-Announcement------------------------------------------
Thread #x was created
...
by 0x........: pthread_create_WRK (hg_intercepts.c:...)
by 0x........: pthread_create@* (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:76)
----------------------------------------------------------------
Possible data race during write of size 2 at 0x........ by thread #x
Locks held: none
at 0x........: main (tc20_verifywrap.c:78)
This conflicts with a previous write of size 2 by thread #x
Locks held: none
at 0x........: racy_child (tc20_verifywrap.c:34)
by 0x........: mythread_wrapper (hg_intercepts.c:...)
...
Location 0x........ is 0 bytes inside global var "unprotected"
declared at tc20_verifywrap.c:27
----------------------------------------------------------------
Thread #x's call to pthread_join failed
with error code 35 (EDEADLK: Resource deadlock would occur)
at 0x........: pthread_join_WRK (hg_intercepts.c:...)
by 0x........: pthread_join (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:83)
---------------- pthread_mutex_lock et al ----------------
----------------------------------------------------------------
Thread #x's call to pthread_mutex_init failed
with error code 95 (EOPNOTSUPP: Operation not supported on transport endpoint)
at 0x........: pthread_mutex_init (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:92)
----------------------------------------------------------------
Thread #x: pthread_mutex_destroy of a locked mutex
at 0x........: pthread_mutex_destroy (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:102)
----------------------------------------------------------------
Thread #x's call to pthread_mutex_destroy failed
with error code 16 (EBUSY: Device or resource busy)
at 0x........: pthread_mutex_destroy (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:102)
----------------------------------------------------------------
Thread #x's call to pthread_mutex_lock failed
with error code 22 (EINVAL: Invalid argument)
at 0x........: pthread_mutex_lock (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:108)
----------------------------------------------------------------
Thread #x's call to pthread_mutex_trylock failed
with error code 22 (EINVAL: Invalid argument)
at 0x........: pthread_mutex_trylock (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:116)
----------------------------------------------------------------
Thread #x's call to pthread_mutex_timedlock failed
with error code 22 (EINVAL: Invalid argument)
at 0x........: pthread_mutex_timedlock (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:121)
----------------------------------------------------------------
Thread #x unlocked an invalid lock at 0x........
at 0x........: pthread_mutex_unlock (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:125)
----------------------------------------------------------------
Thread #x's call to pthread_mutex_unlock failed
with error code 22 (EINVAL: Invalid argument)
at 0x........: pthread_mutex_unlock (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:125)
---------------- pthread_cond_wait et al ----------------
----------------------------------------------------------------
Thread #x: pthread_cond_{timed}wait called with un-held mutex
at 0x........: pthread_cond_wait_WRK (hg_intercepts.c:...)
by 0x........: pthread_cond_wait@* (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:147)
----------------------------------------------------------------
Thread #x's call to pthread_cond_wait failed
with error code 1 (EPERM: Operation not permitted)
at 0x........: pthread_cond_wait_WRK (hg_intercepts.c:...)
by 0x........: pthread_cond_wait@* (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:147)
----------------------------------------------------------------
Thread #x: pthread_cond_{signal,broadcast}: dubious: associated lock is not held by any thread
at 0x........: pthread_cond_signal_WRK (hg_intercepts.c:...)
by 0x........: pthread_cond_signal@* (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:152)
FIXME: can't figure out how to verify wrap of pthread_cond_signal
----------------------------------------------------------------
Thread #x: pthread_cond_{signal,broadcast}: dubious: associated lock is not held by any thread
at 0x........: pthread_cond_broadcast_WRK (hg_intercepts.c:...)
by 0x........: pthread_cond_broadcast@* (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:158)
FIXME: can't figure out how to verify wrap of pthread_broadcast_signal
----------------------------------------------------------------
Thread #x: pthread_cond_{timed}wait called with un-held mutex
at 0x........: pthread_cond_timedwait_WRK (hg_intercepts.c:...)
by 0x........: pthread_cond_timedwait@* (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:165)
----------------------------------------------------------------
Thread #x's call to pthread_cond_timedwait failed
with error code 22 (EINVAL: Invalid argument)
at 0x........: pthread_cond_timedwait_WRK (hg_intercepts.c:...)
by 0x........: pthread_cond_timedwait@* (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:165)
---------------- pthread_rwlock_* ----------------
----------------------------------------------------------------
Thread #x unlocked a not-locked lock at 0x........
at 0x........: pthread_rwlock_unlock_WRK (hg_intercepts.c:...)
by 0x........: pthread_rwlock_unlock (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:179)
Lock at 0x........ was first observed
at 0x........: pthread_rwlock_init_WRK (hg_intercepts.c:...)
by 0x........: pthread_rwlock_init (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:178)
(1) no error on next line
(2) no error on next line
(3) ERROR on next line
----------------------------------------------------------------
Thread #x unlocked a not-locked lock at 0x........
at 0x........: pthread_rwlock_unlock_WRK (hg_intercepts.c:...)
by 0x........: pthread_rwlock_unlock (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:196)
Lock at 0x........ was first observed
at 0x........: pthread_rwlock_init_WRK (hg_intercepts.c:...)
by 0x........: pthread_rwlock_init (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:186)
(4) no error on next line
(5) no error on next line
(6) no error on next line
(7) no error on next line
(8) ERROR on next line
----------------------------------------------------------------
Thread #x unlocked a not-locked lock at 0x........
at 0x........: pthread_rwlock_unlock_WRK (hg_intercepts.c:...)
by 0x........: pthread_rwlock_unlock (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:212)
Lock at 0x........ was first observed
at 0x........: pthread_rwlock_init_WRK (hg_intercepts.c:...)
by 0x........: pthread_rwlock_init (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:186)
---------------- sem_* ----------------
----------------------------------------------------------------
Thread #x's call to sem_init failed
with error code 22 (EINVAL: Invalid argument)
at 0x........: sem_init_WRK (hg_intercepts.c:...)
by 0x........: sem_init@* (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:228)
FIXME: can't figure out how to verify wrap of sem_destroy
----------------------------------------------------------------
Thread #x: Bug in libpthread: sem_wait succeeded on semaphore without prior sem_post
at 0x........: sem_wait_WRK (hg_intercepts.c:...)
by 0x........: sem_wait (hg_intercepts.c:...)
by 0x........: main (tc20_verifywrap.c:242)
FIXME: can't figure out how to verify wrap of sem_post
------------ dealloc of mem holding locks ------------
----------------------------------------------------------------
Thread #x: Exiting thread still holds 1 lock
...
ERROR SUMMARY: 22 errors from 22 contexts (suppressed: 0 from 0)