1 files changed, 7 insertions, 1 deletions
diff --git a/tests/condvar1.c b/tests/condvar1.c
index 97c870b..daa0f42 100644
--- a/tests/condvar1.c
+++ b/tests/condvar1.c
@@ -46,14 +46,20 @@
 
 #include "test.h"
 
-pthread_cond_t cv;
+static pthread_cond_t cv = NULL;
 
 int
 main()
 {
+  assert(cv == NULL);
+
   assert(pthread_cond_init(&cv, NULL) == 0);
 
+  assert(cv != NULL);
+
   assert(pthread_cond_destroy(&cv) == 0);
 
+  assert(cv == NULL);
+
   return 0;
 }