ceph/src/boost/libs/smart_ptr/test/atomic_sp_constexpr_test.cpp

   1 //
   2 // atomic_sp_constexpr_test.cpp
   3 //
   4 // Copyright 2017 Peter Dimov
   5 //
   6 // Distributed under the Boost Software License, Version 1.0.
   7 // See accompanying file LICENSE_1_0.txt or copy at
   8 // http://www.boost.org/LICENSE_1_0.txt
   9 //
  10
  11 #include <boost/config.hpp>
  12 #include <boost/detail/workaround.hpp>
  13
  14 #define HAVE_CONSTEXPR_INIT
  15
  16 #if defined( BOOST_NO_CXX11_CONSTEXPR )
  17 # undef HAVE_CONSTEXPR_INIT
  18 #endif
  19
  20 #if BOOST_WORKAROUND( BOOST_MSVC, < 1920 )
  21 # undef HAVE_CONSTEXPR_INIT
  22 #endif
  23
  24 #if defined(__clang__) && defined( BOOST_NO_CXX14_CONSTEXPR )
  25 # undef HAVE_CONSTEXPR_INIT
  26 #endif
  27
  28 #if defined( _LIBCPP_VERSION ) && ( _LIBCPP_VERSION < 5000 )
  29 // in libc++, atomic_flag has a non-constexpr constructor from bool
  30 # undef HAVE_CONSTEXPR_INIT
  31 #endif
  32
  33 #if !defined( HAVE_CONSTEXPR_INIT ) || defined( BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX )
  34
  35 int main()
  36 {
  37 }
  38
  39 #else
  40
  41 #include <boost/smart_ptr/atomic_shared_ptr.hpp>
  42 #include <boost/core/lightweight_test.hpp>
  43
  44 struct X
  45 {
  46 };
  47
  48 struct Z
  49 {
  50     Z();
  51 };
  52
  53 static Z z;
  54
  55 static boost::atomic_shared_ptr<X> p1;
  56
  57 Z::Z()
  58 {
  59     p1 = boost::shared_ptr<X>( new X );
  60 }
  61
  62 int main()
  63 {
  64     boost::shared_ptr<X> p2 = p1;
  65
  66     BOOST_TEST( p2.get() != 0 );
  67     BOOST_TEST_EQ( p2.use_count(), 2 );
  68
  69     return boost::report_errors();
  70 }
  71
  72 #endif // #if defined( BOOST_NO_CXX11_CONSEXPR )