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

   1 // Copyright (C) 2011-2016 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++11" }
  20
  21 #include <vector>
  22 #include <testsuite_allocator.h>
  23
  24 struct T { int i; };
  25
  26 using __gnu_test::propagating_allocator;
  27
  28 void test01()
  29 {
  30   typedef std::allocator<T> alloc_type;
  31   typedef std::vector<T, alloc_type> test_type;
  32   test_type v1;
  33   test_type v2;
  34   // this is a GNU extension for std::allocator
  35   static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" );
  36   static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" );
  37 }
  38
  39 void test02()
  40 {
  41   typedef propagating_allocator<T, false> alloc_type;
  42   typedef std::vector<T, alloc_type> test_type;
  43   test_type v1(alloc_type(1));
  44   test_type v2(alloc_type(2));
  45   static_assert( !noexcept( v1 = std::move(v2) ), "Move assign can throw" );
  46   static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" );
  47 }
  48
  49 void test03()
  50 {
  51   typedef propagating_allocator<T, true> alloc_type;
  52   typedef std::vector<T, alloc_type> test_type;
  53   test_type v1(alloc_type(1));
  54   test_type v2(alloc_type(2));
  55   static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" );
  56   static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" );
  57 }