ceph/src/boost/libs/functional/factory/test/factory_allocator_throws.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/functional/factory.hpp>
   9 #include <boost/core/lightweight_test.hpp>
  10 #include <boost/smart_ptr/shared_ptr.hpp>
  11
  12 struct type {
  13     explicit type(bool b) {
  14         if (b) {
  15             throw true;
  16         }
  17     }
  18 };
  19
  20 template<class T>
  21 class creator {
  22 public:
  23     static int count;
  24
  25     typedef T value_type;
  26     typedef T* pointer;
  27
  28     template<class U>
  29     struct rebind {
  30         typedef creator<U> other;
  31     };
  32
  33     creator() { }
  34
  35     template<class U>
  36     creator(const creator<U>&) { }
  37
  38     T* allocate(std::size_t size) {
  39         ++count;
  40         return static_cast<T*>(::operator new(sizeof(T) * size));
  41     }
  42
  43     void deallocate(T* ptr, std::size_t) {
  44         --count;
  45         ::operator delete(ptr);
  46     }
  47 };
  48
  49 template<class T>
  50 int creator<T>::count = 0;
  51
  52 template<class T, class U>
  53 inline bool
  54 operator==(const creator<T>&, const creator<U>&)
  55 {
  56     return true;
  57 }
  58
  59 template<class T, class U>
  60 inline bool
  61 operator!=(const creator<T>&, const creator<U>&)
  62 {
  63     return false;
  64 }
  65
  66 int main()
  67 {
  68     bool b = true;
  69     try {
  70         boost::shared_ptr<type> s(boost::factory<boost::shared_ptr<type>,
  71             creator<void>,
  72             boost::factory_alloc_for_pointee_and_deleter>()(b));
  73     } catch (...) {
  74         BOOST_TEST(creator<type>::count == 0);
  75     }
  76     try {
  77         boost::shared_ptr<type> s(boost::factory<boost::shared_ptr<type>,
  78             creator<void>,
  79             boost::factory_passes_alloc_to_smart_pointer>()(b));
  80     } catch (...) {
  81         BOOST_TEST(creator<type>::count == 0);
  82     }
  83     return boost::report_errors();
  84 }
  85