libstdc++-v3/testsuite/25_algorithms/search_n/97828.cc

   1 // Copyright (C) 2020-2025 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 { target c++20 } }
  19
  20 // PR libstdc++/97828
  21
  22 #include <algorithm>
  23 #include <testsuite_hooks.h>
  24 #include <testsuite_iterators.h>
  25
  26 using __gnu_test::test_sized_range;
  27 using __gnu_test::forward_iterator_wrapper;
  28 using __gnu_test::random_access_iterator_wrapper;
  29
  30 template<template<typename> typename Wrapper>
  31 void
  32 test01()
  33 {
  34   int x[] = {0,42,42,0,42,42,42};
  35   test_sized_range<int, Wrapper> rx(x);
  36   auto res = std::ranges::search_n(rx, 3, 42);
  37   VERIFY( res.begin().ptr == x+4 && res.end().ptr == x+7 );
  38 }
  39
  40 template<template<typename> typename Wrapper>
  41 void
  42 test02()
  43 {
  44   int x[] = {0,42,42,0,42};
  45   test_sized_range<int, Wrapper> rx(x);
  46   auto res = std::ranges::search_n(rx, 3, 42);
  47   VERIFY( res.begin().ptr == x+5 && res.end().ptr == x+5 );
  48 }
  49
  50 int
  51 main()
  52 {
  53   test01<forward_iterator_wrapper>();
  54   test01<random_access_iterator_wrapper>();
  55   test02<forward_iterator_wrapper>();
  56   test02<random_access_iterator_wrapper>();
  57 }