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

   1 // Copyright (C) 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++11" }
  20
  21 #include <set>
  22 #include <testsuite_allocator.h>
  23
  24 struct T { int i; };
  25
  26 bool operator<(T l, T r) { return l.i < r.i; }
  27
  28 using Cmp = std::less<T>;
  29
  30 namespace __gnu_test
  31 {
  32   template<typename U>
  33     inline void
  34     swap(propagating_allocator<U, true>& l, propagating_allocator<U, true>& r)
  35     noexcept(false)
  36     { }
  37 }
  38
  39 using __gnu_test::propagating_allocator;
  40
  41 void test01()
  42 {
  43   typedef std::allocator<T> alloc_type;
  44   typedef std::set<T, Cmp, alloc_type> test_type;
  45   test_type v1;
  46   test_type v2;
  47   // this is a GNU extension for std::allocator
  48   static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" );
  49   static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" );
  50 }
  51
  52 void test02()
  53 {
  54   typedef propagating_allocator<T, false> alloc_type;
  55   typedef std::set<T, Cmp, alloc_type> test_type;
  56   test_type v1(alloc_type(1));
  57   test_type v2(alloc_type(2));
  58   static_assert( !noexcept( v1 = std::move(v2) ), "Move assign can throw" );
  59   static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" );
  60 }
  61
  62 void test03()
  63 {
  64   typedef propagating_allocator<T, true> alloc_type;
  65   typedef std::set<T, Cmp, alloc_type> test_type;
  66   test_type v1(alloc_type(1));
  67   test_type v2(alloc_type(2));
  68   static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" );
  69   static_assert( !noexcept( v1.swap(v2) ), "Swap can throw" );
  70 }