libstdc++-v3/testsuite/23_containers/vector/cons/86292.cc

   1 // Copyright (C) 2018-2025 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 run }
  19
  20 #include <vector>
  21 #include <testsuite_hooks.h>
  22 #include <testsuite_iterators.h>
  23
  24 struct X
  25 {
  26   X() { ++count; }
  27   X(const X&) { if (++copies >= max_copies) throw 1; ++count; }
  28   ~X() { --count; }
  29
  30   static int count;
  31   static int copies;
  32   static int max_copies;
  33 };
  34
  35 int X::count = 0;
  36 int X::copies = 0;
  37 int X::max_copies = 0;
  38
  39 void
  40 test01()
  41 {
  42   X x[3];
  43   const int count = X::count;
  44   X::max_copies = 2;
  45   __gnu_test::test_container<const X, __gnu_test::input_iterator_wrapper>
  46     x_input(x, x+3);
  47   bool caught = false;
  48   try
  49   {
  50     std::vector<X> v(x_input.begin(), x_input.end());
  51   }
  52   catch(int)
  53   {
  54     caught = true;
  55   }
  56   VERIFY( caught );
  57   VERIFY( X::count == count );
  58 }
  59
  60 int
  61 main()
  62 {
  63   test01();
  64 }