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

   1 // Copyright (C) 2011-2013 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-do compile }
  19 // { dg-options "-std=gnu++0x" }
  20
  21 #include <vector>
  22 #include <testsuite_allocator.h>
  23
  24 struct T { int i; };
  25
  26 namespace __gnu_test
  27 {
  28   template<typename U>
  29     inline void
  30     swap(propagating_allocator<U, true>& l, propagating_allocator<U, true>& r)
  31     noexcept(false)
  32     { }
  33 }
  34
  35 using __gnu_test::propagating_allocator;
  36
  37 void test01()
  38 {
  39   typedef std::allocator<T> alloc_type;
  40   typedef std::vector<T, alloc_type> test_type;
  41   test_type v1;
  42   test_type v2;
  43   // this is a GNU extension for std::allocator
  44   static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" );
  45   static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" );
  46 }
  47
  48 void test02()
  49 {
  50   typedef propagating_allocator<T, false> alloc_type;
  51   typedef std::vector<T, alloc_type> test_type;
  52   test_type v1(alloc_type(1));
  53   test_type v2(alloc_type(2));
  54   static_assert( !noexcept( v1 = std::move(v2) ), "Move assign can throw" );
  55   static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" );
  56 }
  57
  58 void test03()
  59 {
  60   typedef propagating_allocator<T, true> alloc_type;
  61   typedef std::vector<T, alloc_type> test_type;
  62   test_type v1(alloc_type(1));
  63   test_type v2(alloc_type(2));
  64   static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" );
  65   static_assert( !noexcept( v1.swap(v2) ), "Swap can throw" );
  66 }