? lib/libpthread/cscope.out
Index: lib/libpthread/pthread_mutex.c
===================================================================
RCS file: /cvsroot/src/lib/libpthread/pthread_mutex.c,v
retrieving revision 1.61
diff -u -p -r1.61 pthread_mutex.c
--- lib/libpthread/pthread_mutex.c	16 Jul 2016 12:58:11 -0000	1.61
+++ lib/libpthread/pthread_mutex.c	17 Jul 2016 05:34:26 -0000
@@ -796,7 +796,7 @@ pthread__mutex_deferwake(pthread_t self,
 int
 pthread_mutex_getprioceiling(const pthread_mutex_t *ptm, int *ceil) 
 {
-	*ceil = (unsigned int)ptm->ptm_ceiling;
+	*ceil = ptm->ptm_ceiling;
 	return 0;
 }
 
@@ -807,9 +807,9 @@ pthread_mutex_setprioceiling(pthread_mut
 
 	error = pthread_mutex_lock(ptm);
 	if (error == 0) {
-		*old_ceil = (unsigned int)ptm->ptm_ceiling;
+		*old_ceil = ptm->ptm_ceiling;
 		/*check range*/
-		ptm->ptm_ceiling = (unsigned char)ceil;
+		ptm->ptm_ceiling = ceil;
 		pthread_mutex_unlock(ptm);
 	}
 	return error;
Index: lib/libpthread/pthread_types.h
===================================================================
RCS file: /cvsroot/src/lib/libpthread/pthread_types.h,v
retrieving revision 1.18
diff -u -p -r1.18 pthread_types.h
--- lib/libpthread/pthread_types.h	3 Jul 2016 14:24:58 -0000	1.18
+++ lib/libpthread/pthread_types.h	17 Jul 2016 05:34:26 -0000
@@ -115,7 +115,10 @@ struct	__pthread_mutex_st {
 #ifdef __CPU_SIMPLE_LOCK_PAD
 	uint8_t		ptm_pad1[3];
 #endif
-	__pthread_spin_t ptm_ceiling;
+	union {
+		unsigned char ptm_ceiling;
+		__pthread_spin_t ptm_unused;
+	};
 #ifdef __CPU_SIMPLE_LOCK_PAD
 	uint8_t		ptm_pad2[3];
 #endif
@@ -131,13 +134,13 @@ struct	__pthread_mutex_st {
 #ifdef __CPU_SIMPLE_LOCK_PAD
 #define _PTHREAD_MUTEX_INITIALIZER { _PT_MUTEX_MAGIC, 			\
 				    __SIMPLELOCK_UNLOCKED, { 0, 0, 0 },	\
-				    __SIMPLELOCK_UNLOCKED, { 0, 0, 0 },	\
+				    { 0 }, { 0, 0, 0 },			\
 				    NULL, NULL, 0, NULL			\
 				  }
 #else
 #define _PTHREAD_MUTEX_INITIALIZER { _PT_MUTEX_MAGIC, 			\
 				    __SIMPLELOCK_UNLOCKED,		\
-				    __SIMPLELOCK_UNLOCKED,		\
+				    { 0 } ,				\
 				    NULL, NULL, 0, NULL			\
 				  }
 #endif /* __CPU_SIMPLE_LOCK_PAD */