1 files changed, 9 insertions, 0 deletions

diff --git a/lib/libc/gen/_spinlock_stub.c b/lib/libc/gen/_spinlock_stub.c
index e53fdb46ba96..85faf285cbe3 100644
--- a/lib/libc/gen/_spinlock_stub.c
+++ b/lib/libc/gen/_spinlock_stub.c
@@ -43,6 +43,7 @@ __FBSDID("$FreeBSD$");
  */
 __weak_reference(_atomic_lock_stub, _atomic_lock);
 __weak_reference(_spinlock_stub, _spinlock);
+__weak_reference(_spinlock_stub, _spinunlock);
 __weak_reference(_spinlock_debug_stub, _spinlock_debug);
 
 
@@ -65,6 +66,14 @@ _spinlock_stub(spinlock_t *lck)
 }
 
 /*
+ * This function is a stub for the spinunlock function in libpthread.
+ */
+void
+_spinunlock_stub(spinlock_t *lck)
+{
+}
+
+/*
  * This function is a stub for the debug spinlock function in libpthread.
  */
 void