-#ifndef _BABELTRACE_BITFIELD_H
-#define _BABELTRACE_BITFIELD_H
-
/*
- * Copyright 2010-2019 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * SPDX-License-Identifier: MIT
*
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * Copyright (C) 2010-2019 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
+#ifndef _BABELTRACE_BITFIELD_H
+#define _BABELTRACE_BITFIELD_H
+
#include <stdint.h> /* C99 5.2.4.2 Numerical limits */
#include <limits.h> /* C99 5.2.4.2 Numerical limits */
#include <stdbool.h> /* C99 7.16 bool type */
/*
* _bt_is_signed_type() willingly generates comparison of unsigned
* expression < 0, which is always false. Silence compiler warnings.
+ * GCC versions lower than 4.6.0 do not accept diagnostic pragma inside
+ * functions.
*/
-#ifdef __GNUC__
+#if defined (__GNUC__) && (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) >= 40600
# define _BT_DIAG_PUSH _Pragma("GCC diagnostic push")
# define _BT_DIAG_POP _Pragma("GCC diagnostic pop")
* Produce a build-time error if the condition `cond` is non-zero.
* Evaluates as a size_t expression.
*/
+#ifdef __cplusplus
+#define _BT_BUILD_ASSERT(cond) ([]{static_assert((cond), "");}, 0)
+#else
#define _BT_BUILD_ASSERT(cond) \
sizeof(struct { int f:(2 * !!(cond) - 1); })
+#endif
/*
* Cast value `v` to an unsigned integer of the same size as `v`.
do { \
__typeof__(*(vptr)) *_vptr = (vptr); \
__typeof__(*_vptr) _v; \
- type *_ptr = (void *) (ptr); \
+ type *_ptr = (type *) (ptr); \
unsigned long _start = (start), _length = (length); \
type _mask, _cmask; \
unsigned long _ts = sizeof(type) * CHAR_BIT; /* type size */ \