---Thread-Announcement------------------------------------------

Thread #x was created
   ...
   by 0x........: pthread_create@* (hg_intercepts.c:...)
   by 0x........: main (locked_vs_unlocked1.c:34)

---Thread-Announcement------------------------------------------

Thread #x was created
   ...
   by 0x........: pthread_create@* (hg_intercepts.c:...)
   by 0x........: main (locked_vs_unlocked1.c:29)

----------------------------------------------------------------

Lock at 0x........ was first observed
   at 0x........: pthread_mutex_lock (hg_intercepts.c:...)
   by 0x........: child_fn (locked_vs_unlocked1.c:18)
   by 0x........: mythread_wrapper (hg_intercepts.c:...)
   ...

Possible data race during write of size 4 at 0x........ by thread #x
Locks held: 1, at address 0x........
   at 0x........: child_fn (locked_vs_unlocked1.c:19)
   by 0x........: mythread_wrapper (hg_intercepts.c:...)
   ...

This conflicts with a previous write of size 4 by thread #x
Locks held: none
   at 0x........: child_fn (locked_vs_unlocked1.c:19)
   by 0x........: mythread_wrapper (hg_intercepts.c:...)
   ...
 Address 0x........ is 0 bytes inside data symbol "x"