libstdc++-v3/testsuite/21_strings/basic_string/lwg2758.cc

   1 // { dg-do compile { target c++17 } }
   2
   3 // Copyright (C) 2016-2023 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 #include <string>
  21
  22 struct CustomString
  23 {
  24   std::string data = "foo";
  25   std::string_view data_view = data;
  26   operator std::string_view() const {return data_view;}
  27 };
  28
  29 int main()
  30 {
  31     std::string x;
  32     CustomString cs;
  33     x.append("foo", 0, 3);
  34     x.append(cs, 0, 3);
  35     x.assign("foo", 0, 3);
  36     x.assign(cs, 0, 3);
  37     x.insert(0, "foo", 0, 3);
  38     x.insert(0, cs, 0, 3);
  39     x = "bar";
  40     x.replace(0, 3, "foo", 0, 3);
  41     x.replace(0, 3, cs, 0, 3);
  42     x = "bar";
  43     (void) x.compare(0, 3, "foo", 0, 3);
  44     (void) x.compare(0, 3, cs, 0, 3);
  45 }