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

   1 // { dg-options "-std=gnu++17" }
   2 // { dg-do compile { target c++17 } }
   3
   4 // Copyright (C) 2016-2020 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <string>
  22
  23 struct CustomString
  24 {
  25   std::string data = "foo";
  26   std::string_view data_view = data;
  27   operator std::string_view() const {return data_view;}
  28 };
  29
  30 int main()
  31 {
  32     std::string x;
  33     CustomString cs;
  34     x.append("foo", 0, 3);
  35     x.append(cs, 0, 3);
  36     x.assign("foo", 0, 3);
  37     x.assign(cs, 0, 3);
  38     x.insert(0, "foo", 0, 3);
  39     x.insert(0, cs, 0, 3);
  40     x = "bar";
  41     x.replace(0, 3, "foo", 0, 3);
  42     x.replace(0, 3, cs, 0, 3);
  43     x = "bar";
  44     x.compare(0, 3, "foo", 0, 3);
  45     x.compare(0, 3, cs, 0, 3);
  46 }