/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef mozilla_unused_h #define mozilla_unused_h #include "mozilla/Types.h" #ifdef __cplusplus namespace mozilla { // // Suppress GCC warnings about unused return values with // Unused << SomeFuncDeclaredWarnUnusedReturnValue(); // struct unused_t { template<typename T> inline void operator<<(const T& /*unused*/) const {} }; extern MFBT_DATA const unused_t Unused; } // namespace mozilla #endif // __cplusplus // An alternative to mozilla::Unused for use in (a) C code and (b) code where // linking with unused.o is difficult. #define MOZ_UNUSED(expr) \ do { if (expr) { (void)0; } } while (0) #endif // mozilla_unused_h