libstdc++-v3/testsuite/std/ranges/adaptors/split_neg.cc

   1 // Copyright (C) 2020-2021 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-options "-std=gnu++2a" }
  19 // { dg-do compile { target c++2a } }
  20
  21 #include <algorithm>
  22 #include <ranges>
  23 #include <string_view>
  24
  25 namespace ranges = std::ranges;
  26 namespace views = std::ranges::views;
  27
  28 void
  29 test01()
  30 {
  31   using namespace std::literals;
  32   auto x = "the  quick  brown  fox"sv;
  33   auto v = views::split(x, std::initializer_list<char>{' ', ' '});
  34   v.begin(); // { dg-error "" }
  35 }
  36
  37 void
  38 test02()
  39 {
  40   using namespace std::literals;
  41   auto x = "the  quick  brown  fox"sv;
  42   auto v = x | views::split(std::initializer_list<char>{' ', ' '}); // { dg-error "no match" }
  43   v.begin();
  44 }
  45
  46 // { dg-prune-output "in requirements" }
  47 // { dg-error "deduction failed" "" { target *-*-* } 0 }
  48 // { dg-error "no match" "" { target *-*-* } 0 }
  49 // { dg-error "constraint failure" "" { target *-*-* } 0 }