diff --git a/glibc-2.9-20081201/nptl/init.c b/glibc-2.9-20081201/nptl/init.c
index d445de0..85ea778 100644
--- a/glibc-2.9-20081201/nptl/init.c
+++ b/glibc-2.9-20081201/nptl/init.c
@@ -236,7 +236,7 @@ extern void **__libc_dl_error_tsd (void) __attribute__ ((const));
 
 
 /* This can be set by the debugger before initialization is complete.  */
-static bool __nptl_initial_report_events;
+static bool __nptl_initial_report_events __attribute_used__;
 
 void
 __pthread_initialize_minimal_internal (void)
diff --git a/glibc-2.9-20081201/nptl/pthread_create.c b/glibc-2.9-20081201/nptl/pthread_create.c
index 5fcc72c..142f058 100644
--- a/glibc-2.9-20081201/nptl/pthread_create.c
+++ b/glibc-2.9-20081201/nptl/pthread_create.c
@@ -40,10 +40,10 @@ static int start_thread (void *arg);
 int __pthread_debug;
 
 /* Globally enabled events.  */
-static td_thr_events_t __nptl_threads_events;
+static td_thr_events_t __nptl_threads_events __attribute_used__;
 
 /* Pointer to descriptor with the last event.  */
-static struct pthread *__nptl_last_event;
+static struct pthread *__nptl_last_event __attribute_used__;
 
 /* Number of threads running.  */
 unsigned int __nptl_nthreads = 1;