1 files changed, 3 insertions, 2 deletions

diff --git a/src/lib/libc/include/spinlock.h b/src/lib/libc/include/spinlock.h
index e4871f9aed..31e7744f0a 100644
--- a/src/lib/libc/include/spinlock.h
+++ b/src/lib/libc/include/spinlock.h
@@ -29,8 +29,8 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: spinlock.h,v 1.1 1998/11/20 11:18:41 d Exp $
- * $OpenBSD: spinlock.h,v 1.1 1998/11/20 11:18:41 d Exp $
+ * $Id: spinlock.h,v 1.2 1998/12/18 05:59:17 d Exp $
+ * $OpenBSD: spinlock.h,v 1.2 1998/12/18 05:59:17 d Exp $
  *
  * Lock definitions used in both libc and libpthread.
  *
@@ -65,6 +65,7 @@ typedef struct {
  */
 __BEGIN_DECLS
 register_t      _atomic_lock __P((volatile register_t *));
+int             _atomic_is_locked __P((volatile register_t *));
 register_t      _thread_slow_atomic_lock __P((volatile register_t *));
 void    _spinlock __P((spinlock_t *));
 void    _spinlock_debug __P((spinlock_t *, const char *, int));