/* ws_attributes.h
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef __WS_ATTRIBUTES_H__
#define __WS_ATTRIBUTES_H__

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

/*
 * If we're running GCC or clang define _U_ to be "__attribute__((unused))"
 * so we can use _U_ to flag unused function parameters and not get warnings
 * about them. Otherwise, define _U_ to be an empty string so that _U_ used
 * to flag an unused function parameters will compile with other compilers.
 *
 * XXX - similar hints for other compilers?
 */

#if defined(__GNUC__)
  /* This includes clang */
  #define _U_ __attribute__((unused))
#else
  #define _U_
#endif

/* Hint to the compiler that a function never returns */
#if defined(__GNUC__)
  /* This includes clang */
  #define WS_NORETURN __attribute__((noreturn))
#elif defined(_MSC_VER)
  #define WS_NORETURN __declspec(noreturn)
#else
  #define WS_NORETURN
#endif

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* __WS_ATTRIBUTES_H__ */