Public headers: use SPDX identifiers

[urcu.git] / include / urcu / static / pointer.h

diff --git a/include/urcu/static/pointer.h b/include/urcu/static/pointer.h
index c276e68ef770c13c6d6b0c1cf79b9bd055ae4ee0..055a9b884524581a58610a7f9f40dbe0df780a76 100644 (file)
--- a/include/urcu/static/pointer.h
+++ b/include/urcu/static/pointer.h
@@ -1,31 +1,17 @@
+// SPDX-FileCopyrightText: 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+// SPDX-FileCopyrightText: 2009 Paul E. McKenney, IBM Corporation.
+//
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
 #ifndef _URCU_POINTER_STATIC_H
 #define _URCU_POINTER_STATIC_H
 
 /*
- * urcu/static/pointer.h
- *
  * Userspace RCU header. Operations on pointers.
  *
  * TO BE INCLUDED ONLY IN CODE THAT IS TO BE RECOMPILED ON EACH LIBURCU
  * RELEASE. See urcu.h for linking dynamically with the userspace rcu library.
  *
- * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- * Copyright (c) 2009 Paul E. McKenney, IBM Corporation.
- *
- * This 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.
- *
- * This 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 this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
  * IBM's contributions to this file may be relicensed under LGPLv2 or later.
  */
 
@@ -99,7 +85,7 @@ extern "C" {
 #ifdef __URCU_DEREFERENCE_USE_ATOMIC_CONSUME
 # define _rcu_dereference(p) __extension__ ({                                          \
                                __typeof__(__extension__ ({                             \
-                                       __typeof__(p) _________p0 = { 0 };              \
+                                       __typeof__(p) __attribute__((unused)) _________p0 = { 0 }; \
                                        _________p0;                                    \
                                })) _________p1;                                        \
                                __atomic_load(&(p), &_________p1, __ATOMIC_CONSUME);    \