ceph/src/boost/libs/uuid/test/test_msvc_simd_bug981648.hpp

   1 /*
   2 * Copyright 2014 Andrey Semashev
   3 *
   4 * Distributed under the Boost Software License, Version 1.0.
   5 * See accompanying file LICENSE_1_0.txt or copy at
   6 * https://www.boost.org/LICENSE_1_0.txt
   7 */
   8 /*
   9 * This is a part of the test for a workaround for MSVC 12 (VS2013) optimizer bug
  10 * which causes incorrect SIMD code generation for operator==. See:
  11 *
  12 * https://svn.boost.org/trac/boost/ticket/8509#comment:3
  13 * https://connect.microsoft.com/VisualStudio/feedbackdetail/view/981648#tabs
  14 *
  15 * The header contains common definitions for the two source files.
  16 */
  17 #include <boost/uuid/uuid.hpp>
  18 using boost::uuids::uuid;
  19 class headerProperty
  20 {
  21 public:
  22 virtual ~headerProperty() {}
  23 };
  24 class my_obj:
  25 public headerProperty
  26 {
  27 public:
  28 // This char tmp[8] forces the following uuid to be misaligned.
  29 char tmp[8];
  30 // This m_uuid is misaligned (not 16-byte aligned) and causes the != operator to crash.
  31 uuid m_uuid;
  32 const uuid &get_marker_id() const { return m_uuid; }
  33 uuid get_id() const { return m_uuid; }
  34 };