libstdc++-v3/testsuite/20_util/allocator_traits/members/destroy.cc

   1 // { dg-options "-std=gnu++0x" }
   2 // { dg-do compile }
   3
   4 // Copyright (C) 2011-2013 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <memory>
  22 #include <new>
  23 #include <testsuite_hooks.h>
  24
  25 struct X
  26 {
  27   static int counter;
  28   ~X() { ++counter; }
  29 };
  30
  31 int X::counter = 0;
  32
  33 template<typename T>
  34 struct allocator_with_destroy
  35 {
  36   typedef T value_type;
  37
  38   allocator_with_destroy() : called() { }
  39
  40   void destroy(T* p) { called = true; }
  41
  42   int called;
  43 };
  44
  45 template<typename T>
  46 struct allocator_without_destroy
  47 {
  48   typedef T value_type;
  49
  50   allocator_without_destroy() : called() { }
  51
  52   int called;
  53 };
  54
  55 void test01()
  56 {
  57   bool test __attribute__((unused)) = true;
  58
  59   typedef std::allocator_traits<allocator_with_destroy<X>> traits_type;
  60   traits_type::allocator_type a;
  61   X* p = 0;
  62   traits_type::destroy(a, p);
  63   VERIFY( a.called );
  64   VERIFY( X::counter == 0 );
  65 }
  66
  67 void test02()
  68 {
  69   bool test __attribute__((unused)) = true;
  70
  71   typedef std::allocator_traits<allocator_without_destroy<X>> traits_type;
  72   traits_type::allocator_type a;
  73   char buf[sizeof(X)];
  74   X* p = ::new (static_cast<void*>(buf)) X();
  75   traits_type::destroy(a, p);
  76   VERIFY( !a.called );
  77   VERIFY( X::counter == 1 );
  78 }
  79
  80 int main()
  81 {
  82   test01();
  83   test02();
  84 }