1*d9f75844SAndroid Build Coastguard Worker /* 2*d9f75844SAndroid Build Coastguard Worker * Copyright (c) 2018 The WebRTC project authors. All Rights Reserved. 3*d9f75844SAndroid Build Coastguard Worker * 4*d9f75844SAndroid Build Coastguard Worker * Use of this source code is governed by a BSD-style license 5*d9f75844SAndroid Build Coastguard Worker * that can be found in the LICENSE file in the root of the source 6*d9f75844SAndroid Build Coastguard Worker * tree. An additional intellectual property rights grant can be found 7*d9f75844SAndroid Build Coastguard Worker * in the file PATENTS. All contributing project authors may 8*d9f75844SAndroid Build Coastguard Worker * be found in the AUTHORS file in the root of the source tree. 9*d9f75844SAndroid Build Coastguard Worker */ 10*d9f75844SAndroid Build Coastguard Worker 11*d9f75844SAndroid Build Coastguard Worker #ifndef RTC_BASE_SYSTEM_UNUSED_H_ 12*d9f75844SAndroid Build Coastguard Worker #define RTC_BASE_SYSTEM_UNUSED_H_ 13*d9f75844SAndroid Build Coastguard Worker 14*d9f75844SAndroid Build Coastguard Worker // Prevent the compiler from warning about an unused variable. For example: 15*d9f75844SAndroid Build Coastguard Worker // int result = DoSomething(); 16*d9f75844SAndroid Build Coastguard Worker // RTC_DCHECK(result == 17); 17*d9f75844SAndroid Build Coastguard Worker // RTC_UNUSED(result); 18*d9f75844SAndroid Build Coastguard Worker // Note: In most cases it is better to remove the unused variable rather than 19*d9f75844SAndroid Build Coastguard Worker // suppressing the compiler warning. 20*d9f75844SAndroid Build Coastguard Worker #ifndef RTC_UNUSED 21*d9f75844SAndroid Build Coastguard Worker #ifdef __cplusplus 22*d9f75844SAndroid Build Coastguard Worker #define RTC_UNUSED(x) static_cast<void>(x) 23*d9f75844SAndroid Build Coastguard Worker #else 24*d9f75844SAndroid Build Coastguard Worker #define RTC_UNUSED(x) (void)(x) 25*d9f75844SAndroid Build Coastguard Worker #endif 26*d9f75844SAndroid Build Coastguard Worker #endif // RTC_UNUSED 27*d9f75844SAndroid Build Coastguard Worker 28*d9f75844SAndroid Build Coastguard Worker #endif // RTC_BASE_SYSTEM_UNUSED_H_ 29