libstdc++-v3/testsuite/25_algorithms/stable_sort/49559.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2011-2022 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #undef _GLIBCXX_CONCEPT_CHECKS
  21
  22 // XXX FIXME:  parallel-mode should deal correctly with moveable-only types
  23 // per C++0x, at minimum smoothly fall back to serial.
  24 #undef _GLIBCXX_PARALLEL
  25
  26 #include <algorithm>
  27 #include <testsuite_hooks.h>
  28 #include <testsuite_iterators.h>
  29 #include <testsuite_rvalref.h>
  30
  31 using __gnu_test::test_container;
  32 using __gnu_test::random_access_iterator_wrapper;
  33 using __gnu_test::rvalstruct;
  34
  35 typedef test_container<rvalstruct, random_access_iterator_wrapper> Container;
  36
  37 const int A[] = { 10 };
  38 const int N = 1;
  39
  40 bool order(const rvalstruct& lhs, const rvalstruct& rhs)
  41 { return lhs < rhs; }
  42
  43 // libstdc++/49559
  44 void test01()
  45 {
  46   rvalstruct s1[1];
  47   std::copy(A, A + 1, s1);
  48   Container con1(s1, s1 + 1);
  49   std::stable_sort(con1.begin(), con1.end());
  50   VERIFY( s1[0] == 10 );
  51   VERIFY( s1[0].valid );
  52
  53   rvalstruct s2[1];
  54   std::copy(A, A + 1, s2);
  55   Container con2(s2, s2 + 1);
  56   std::stable_sort(con2.begin(), con2.end(), order);
  57   VERIFY( s2[0] == 10 );
  58   VERIFY( s2[0].valid );
  59 }
  60
  61 int
  62 main()
  63 {
  64   test01();
  65   return 0;
  66 }