2 Thread #x is the program's root thread
4 Thread #x unlocked a not-locked lock at 0x........
5 at 0x........: pthread_rwlock_unlock* (hg_intercepts.c:...)
6 by 0x........: main (tc12_rwl_trivial.c:35)
7 Lock at 0x........ was first observed
8 at 0x........: pthread_rwlock_init* (hg_intercepts.c:...)
9 by 0x........: main (tc12_rwl_trivial.c:24)
11 Thread #x's call to pthread_rwlock_unlock failed
12 with error code 22 (EINVAL: Invalid argument)
13 at 0x........: pthread_rwlock_unlock* (hg_intercepts.c:...)
14 by 0x........: main (tc12_rwl_trivial.c:35)
17 ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)