1 files changed, 1 insertions, 0 deletions
diff --git a/implement.h b/implement.h
index 9cb3cb3..1f6179e 100644
--- a/implement.h
+++ b/implement.h
@@ -173,6 +173,7 @@ struct sem_t_
   HANDLE event;
 #else				/* NEED_SEM */
   int value;
+  pthread_mutex_t lock;
   HANDLE sem;
 #endif				/* NEED_SEM */
 };