1 2Reader-writer lock not locked by calling thread: rwlock 0x......... 3 at 0x........: pthread_rwlock_unlock (drd_pthread_intercepts.c:?) 4 by 0x........: safe_pthread_rwlock_unlock (safe-pthread.h:58) 5 by 0x........: main (tc12_rwl_trivial.c:29) 6rwlock 0x........ was first observed at: 7 at 0x........: pthread_rwlock_init (drd_pthread_intercepts.c:?) 8 by 0x........: main (tc12_rwl_trivial.c:18) 9 10 11ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0) 12