diff --git a/lib/libthr/thread/thr_rwlock.c b/lib/libthr/thread/thr_rwlock.c
--- a/lib/libthr/thread/thr_rwlock.c
+++ b/lib/libthr/thread/thr_rwlock.c
@@ -59,7 +59,7 @@
 static int init_static(struct pthread *thread, pthread_rwlock_t *rwlock);
 static int init_rwlock(pthread_rwlock_t *rwlock, pthread_rwlock_t *rwlock_out);
 
-static int __always_inline
+static __always_inline int
 check_and_init_rwlock(pthread_rwlock_t *rwlock, pthread_rwlock_t *rwlock_out)
 {
 	if (__predict_false(*rwlock == THR_PSHARED_PTR ||