commit 900778283ac3cfbd274abc55840b5cdae9b7745f
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Sun Feb 9 16:54:58 2020 +0000

    htl: make pthread_spin_lock really spin
    
    __spin_lock would actually use gsync_wait to block, which is not what
    pthread_spin_lock is about.

diff --git a/sysdeps/mach/htl/bits/spin-lock-inline.h b/sysdeps/mach/htl/bits/spin-lock-inline.h
index 771292f08f..556bdd4c28 100644
--- a/sysdeps/mach/htl/bits/spin-lock-inline.h
+++ b/sysdeps/mach/htl/bits/spin-lock-inline.h
@@ -67,7 +67,7 @@ __PT_SPIN_INLINE int __pthread_spin_lock (__pthread_spinlock_t *__lock);
 __PT_SPIN_INLINE int
 __pthread_spin_lock (__pthread_spinlock_t *__lock)
 {
-  __spin_lock ((__spin_lock_t *) __lock);
+  __spin_lock_solid ((__spin_lock_t *) __lock);
   return 0;
 }