ceph/src/boost/libs/config/test/boost_no_std_allocator.ipp

   1 //  (C) Copyright John Maddock 2001.
   2 //  Use, modification and distribution are subject to the
   3 //  Boost Software License, Version 1.0. (See accompanying file
   4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 //  See http://www.boost.org/libs/config for the most recent version.
   7
   8 //  MACRO:         BOOST_NO_STD_ALLOCATOR
   9 //  TITLE:         std::allocator
  10 //  DESCRIPTION:   The C++ standard library does not provide
  11 //                 a standards conforming std::allocator.
  12
  13 #ifndef BOOST_NESTED_TEMPLATE
  14 #define BOOST_NESTED_TEMPLATE template
  15 #endif
  16
  17 #include <memory>
  18
  19 namespace boost_no_std_allocator{
  20
  21 #if defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)))
  22 #  define BOOST_UNUSED_ATTRIBUTE __attribute__((unused))
  23 #else
  24 #  define BOOST_UNUSED_ATTRIBUTE
  25 #endif
  26
  27 template <class T>
  28 int test_allocator(const T& i)
  29 {
  30    typedef std::allocator<int> alloc1_t;
  31 #if !((__cplusplus > 201700) || (defined(_MSVC_LANG) && (_MSVC_LANG > 201700)))
  32    // stuff deprecated in C++17:
  33    typedef typename alloc1_t::size_type           size_type;
  34    typedef typename alloc1_t::difference_type     difference_type BOOST_UNUSED_ATTRIBUTE;
  35    typedef typename alloc1_t::pointer             pointer;
  36    typedef typename alloc1_t::const_pointer       const_pointer;
  37    typedef typename alloc1_t::reference           reference;
  38    typedef typename alloc1_t::const_reference     const_reference;
  39    #endif
  40    typedef typename alloc1_t::value_type          value_type BOOST_UNUSED_ATTRIBUTE;
  41
  42    alloc1_t a1;
  43    alloc1_t a2(a1);
  44    (void)i;
  45 #if !((__cplusplus > 201700) || (defined(_MSVC_LANG) && (_MSVC_LANG > 201700)))
  46    // stuff deprecated in C++17:
  47    typedef typename alloc1_t::BOOST_NESTED_TEMPLATE rebind<double> binder_t;
  48    typedef typename binder_t::other alloc2_t;
  49    alloc2_t a3(a1);
  50    // this chokes early versions of the MSL library
  51    // and isn't currently required by anything in boost
  52    // so don't test for now...
  53    // a3 = a2;
  54
  55    (void)a2;
  56 #endif
  57
  58 #if !((__cplusplus > 201700) || (defined(_MSVC_LANG) && (_MSVC_LANG > 201700)))
  59    pointer p = a1.allocate(1);
  60    const_pointer cp = p;
  61    a1.construct(p,i);
  62    size_type s = a1.max_size();
  63    (void)s;
  64    reference r = *p;
  65    const_reference cr = *cp;
  66    if(p != a1.address(r)) return -1;
  67    if(cp != a1.address(cr)) return -1;
  68    a1.destroy(p);
  69 #else
  70    auto p = a1.allocate(1);
  71 #endif
  72    a1.deallocate(p,1);
  73
  74    return 0;
  75 }
  76
  77
  78 int test()
  79 {
  80    return test_allocator(0);
  81 }
  82
  83 }
  84
  85 #undef BOOST_UNUSED_ATTRIBUTE
  86
  87
  88