mfbt/unused.h
author B2G Bumper Bot <release+b2gbumper@mozilla.com>
Mon, 22 Feb 2016 20:52:33 -0800
changeset 325574 f177f8ec083efc5ddb5d3c854ae7bb383b1b6a45
parent 304827 7ec70e0c699746cf72e03acadc09d0d5877423d0
permissions -rw-r--r--
Bumping gaia.json for 2 gaia revision(s) a=gaia-bump ======== https://hg.mozilla.org/integration/gaia-central/rev/8c0f20540765 Author: Ricky Chien <rickychien@users.noreply.github.com> Desc: Merge pull request #34079 from rickychien/show-hint-after-load Bug 1250032 - [Marketplace] Hint should show after the app finish loading r=@luke-chang ======== https://hg.mozilla.org/integration/gaia-central/rev/8dd0b87892a1 Author: Ricky Chien <ricky060709@gmail.com> Desc: Bug 1250032 - [Marketplace] Hint should show after the app finish loading

/* -*- 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