libstdc++-v3/testsuite/23_containers/forward_list/allocator/noexcept.cc

   1 // Copyright (C) 2012-2013 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-options "-std=gnu++0x" }
  19
  20 #include <forward_list>
  21 #include <testsuite_hooks.h>
  22 #include <testsuite_allocator.h>
  23
  24 struct T { int i; };
  25
  26 namespace __gnu_test
  27 {
  28   inline void
  29   swap(propagating_allocator<T, true>& l, propagating_allocator<T, true>& r)
  30   noexcept(false)
  31   {
  32     typedef uneq_allocator<T> base_alloc;
  33     swap(static_cast<base_alloc&>(l), static_cast<base_alloc&>(r));
  34   }
  35 }
  36
  37 using __gnu_test::propagating_allocator;
  38
  39 void test01()
  40 {
  41   typedef std::allocator<T> alloc_type;
  42   typedef std::forward_list<T, alloc_type> test_type;
  43   test_type v1;
  44   test_type v2;
  45   // this is a GNU extension for std::allocator
  46   static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" );
  47   static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" );
  48 }
  49
  50 void test02()
  51 {
  52   typedef propagating_allocator<T, false> alloc_type;
  53   typedef std::forward_list<T, alloc_type> test_type;
  54   test_type v1(alloc_type(1));
  55   test_type v2(alloc_type(2));
  56   static_assert( !noexcept( v1 = std::move(v2) ), "Move assign can throw" );
  57   static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" );
  58 }
  59
  60 void test03()
  61 {
  62   typedef propagating_allocator<T, true> alloc_type;
  63   typedef std::forward_list<T, alloc_type> test_type;
  64   test_type v1(alloc_type(1));
  65   test_type v2(alloc_type(2));
  66   static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" );
  67   // static_assert( !noexcept( v1.swap(v2) ), "Swap can throw" );
  68 }
  69
  70 int main()
  71 {
  72   test01();
  73   test02();
  74   test03();
  75   return 0;
  76 }