--- a/tests/SIZES.VC
+++ b/tests/SIZES.VC
@@ -1,20 +1,21 @@
-Sizes of pthreads-win32 structs
--------------------------------
-                    pthread_t_  124
-               pthread_attr_t_   28
-                        sem_t_    4
-              pthread_mutex_t_   44
-          pthread_mutexattr_t_    8
-           pthread_spinlock_t_    8
-            pthread_barrier_t_   24
-        pthread_barrierattr_t_    4
-                pthread_key_t_   16
-               pthread_cond_t_   32
-           pthread_condattr_t_    4
-             pthread_rwlock_t_   28
-         pthread_rwlockattr_t_    4
-               pthread_once_t_    8
-               ptw32_cleanup_t   12
-                   sched_param    4
--------------------------------
-
+Sizes of pthreads-win32 structs
+-------------------------------
+                     pthread_t    8
+                ptw32_thread_t  140
+               pthread_attr_t_   28
+                        sem_t_   12
+              pthread_mutex_t_   24
+          pthread_mutexattr_t_    8
+           pthread_spinlock_t_    8
+            pthread_barrier_t_   36
+        pthread_barrierattr_t_    4
+                pthread_key_t_   16
+               pthread_cond_t_   32
+           pthread_condattr_t_    4
+             pthread_rwlock_t_   28
+         pthread_rwlockattr_t_    4
+               pthread_once_t_   16
+               ptw32_cleanup_t   12
+             ptw32_mcs_node_t_   16
+                   sched_param    4
+-------------------------------