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diff --git a/sysdeps/htl/bits/types/struct___pthread_rwlock.h b/sysdeps/htl/bits/types/struct___pthread_rwlock.h
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+++ b/sysdeps/htl/bits/types/struct___pthread_rwlock.h
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+/* rwlock type. Generic version.
+ Copyright (C) 2002-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _BITS_TYPES_STRUCT___PTHREAD_RWLOCK_H
+#define _BITS_TYPES_STRUCT___PTHREAD_RWLOCK_H
+
+#include <bits/types/__pthread_spinlock_t.h>
+
+/* User visible part of a rwlock. If __held is not held and readers
+ is 0, then the lock is unlocked. If __held is held and readers is
+ 0, then the lock is held by a writer. If __held is held and
+ readers is greater than 0, then the lock is held by READERS
+ readers. */
+struct __pthread_rwlock
+{
+ __pthread_spinlock_t __held;
+ __pthread_spinlock_t __lock;
+ int __readers;
+ struct __pthread *__readerqueue;
+ struct __pthread *__writerqueue;
+ struct __pthread_rwlockattr *__attr;
+ void *__data;
+};
+
+/* Initializer for a rwlock. */
+#define __PTHREAD_RWLOCK_INITIALIZER \
+ { __PTHREAD_SPIN_LOCK_INITIALIZER, __PTHREAD_SPIN_LOCK_INITIALIZER, 0, 0, 0, 0, 0 }
+
+
+#endif /* bits/types/struct___pthread_rwlock.h */