ceph/src/common/compiler_extensions.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4  * Ceph - scalable distributed file system
   5  *
   6  * Copyright (C) 2011 New Dream Network
   7  *
   8  * This is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License version 2.1, as published by the Free Software
  11  * Foundation.  See file COPYING.
  12  *
  13  */
  14
  15 #ifndef CEPH_COMPILER_EXTENSIONS_H
  16 #define CEPH_COMPILER_EXTENSIONS_H
  17
  18 /* We should be able to take advantage of nice nonstandard features of gcc
  19  * and other compilers, but still maintain portability.
  20  */
  21
  22 #ifdef __GNUC__
  23 // GCC
  24 #define WARN_UNUSED_RESULT __attribute__((warn_unused_result))
  25 #else
  26 // some other compiler - just make it a no-op
  27 #define WARN_UNUSED_RESULT
  28 #endif
  29
  30 #endif