1 /* 2 * Copyright (c) 2018 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef RTC_BASE_SYSTEM_UNUSED_H_ 12 #define RTC_BASE_SYSTEM_UNUSED_H_ 13 14 // Prevent the compiler from warning about an unused variable. For example: 15 // int result = DoSomething(); 16 // RTC_DCHECK(result == 17); 17 // RTC_UNUSED(result); 18 // Note: In most cases it is better to remove the unused variable rather than 19 // suppressing the compiler warning. 20 #ifndef RTC_UNUSED 21 #ifdef __cplusplus 22 #define RTC_UNUSED(x) static_cast<void>(x) 23 #else 24 #define RTC_UNUSED(x) (void)(x) 25 #endif 26 #endif // RTC_UNUSED 27 28 #endif // RTC_BASE_SYSTEM_UNUSED_H_ 29