libstdc++-v3/testsuite/21_strings/basic_string_view/operations/substr/char/83511.cc

   1 // { dg-options "-std=gnu++17" }
   2 // { dg-do run { target c++17 } }
   3
   4 // Copyright (C) 2018-2020 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 // basic_string_view::substr
  22
  23 #include <string_view>
  24 #include <testsuite_hooks.h>
  25
  26 void
  27 test01()
  28 {
  29   const std::string_view s = "abcdef";
  30   VERIFY( s.substr() == s );
  31   VERIFY( std::string_view{}.substr().empty() );
  32 }
  33
  34 int
  35 main()
  36 {
  37   test01();
  38 }