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

   1 /*
   2 Copyright 2019 Glen Joseph Fernandes
   3 (glenjofe@gmail.com)
   4
   5 Distributed under the Boost Software License, Version 1.0.
   6 (http://www.boost.org/LICENSE_1_0.txt)
   7 */
   8 #include <boost/config.hpp>
   9 #if (!defined(BOOST_LIBSTDCXX_VERSION) || \
  10     BOOST_LIBSTDCXX_VERSION >= 46000) && \
  11     !defined(BOOST_NO_CXX11_SMART_PTR)
  12 #include <boost/smart_ptr/allocate_unique.hpp>
  13 #include <boost/core/lightweight_test.hpp>
  14
  15 template<class T = void>
  16 struct creator {
  17     typedef T value_type;
  18     typedef T* pointer;
  19
  20     template<class U>
  21     struct rebind {
  22         typedef creator<U> other;
  23     };
  24
  25     creator() { }
  26
  27     template<class U>
  28     creator(const creator<U>&) { }
  29
  30     T* allocate(std::size_t size) {
  31         return static_cast<T*>(::operator new(sizeof(T) * size));
  32     }
  33
  34     void deallocate(T* ptr, std::size_t) {
  35         ::operator delete(ptr);
  36     }
  37 };
  38
  39 template<class T, class U>
  40 inline bool
  41 operator==(const creator<T>&, const creator<U>&)
  42 {
  43     return true;
  44 }
  45
  46 template<class T, class U>
  47 inline bool
  48 operator!=(const creator<T>&, const creator<U>&)
  49 {
  50     return false;
  51 }
  52
  53 class type {
  54 public:
  55     static unsigned instances;
  56
  57     type() {
  58         if (instances == 0) {
  59             throw true;
  60         }
  61         ++instances;
  62     }
  63
  64     ~type() {
  65         --instances;
  66     }
  67
  68 private:
  69     type(const type&);
  70     type& operator=(const type&);
  71 };
  72
  73 unsigned type::instances = 0;
  74
  75 int main()
  76 {
  77     try {
  78         boost::allocate_unique<type>(creator<type>());
  79         BOOST_ERROR("allocate_unique did not throw");
  80     } catch (...) {
  81         BOOST_TEST(type::instances == 0);
  82     }
  83     try {
  84         boost::allocate_unique<const type>(creator<>());
  85         BOOST_ERROR("allocate_unique did not throw");
  86     } catch (...) {
  87         BOOST_TEST(type::instances == 0);
  88     }
  89     return boost::report_errors();
  90 }
  91 #else
  92 int main()
  93 {
  94     return 0;
  95 }
  96 #endif