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

   1 // Copyright (C) 2013-2019 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 { target c++11 } }
  19
  20 #include <set>
  21 #include <testsuite_hooks.h>
  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 struct CmpThrow : Cmp { };
  31 void swap(CmpThrow&, CmpThrow&) noexcept(false) { }
  32
  33 using __gnu_test::propagating_allocator;
  34
  35 void test01()
  36 {
  37   typedef std::allocator<T> alloc_type;
  38   typedef std::multiset<T, Cmp, alloc_type> test_type;
  39   test_type v1;
  40   test_type v2;
  41   // this is a GNU extension for std::allocator
  42   static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" );
  43   static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" );
  44 }
  45
  46 void test02()
  47 {
  48   typedef std::allocator<T> alloc_type;
  49   typedef std::multiset<T, CmpThrow, alloc_type> test_type;
  50   test_type v1;
  51   test_type v2;
  52   static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" );
  53   static_assert( !noexcept( v1.swap(v2) ), "Swap can throw" );
  54 }
  55
  56 void test03()
  57 {
  58   typedef propagating_allocator<T, false> alloc_type;
  59   typedef std::multiset<T, Cmp, alloc_type> test_type;
  60   test_type v1(alloc_type(1));
  61   test_type v2(alloc_type(2));
  62   static_assert( !noexcept( v1 = std::move(v2) ), "Move assign can throw" );
  63   static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" );
  64 }
  65
  66 void test04()
  67 {
  68   typedef propagating_allocator<T, true> alloc_type;
  69   typedef std::multiset<T, Cmp, alloc_type> test_type;
  70   test_type v1(alloc_type(1));
  71   test_type v2(alloc_type(2));
  72   static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" );
  73   static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" );
  74 }