text: // { dg-options "-std=gnu++17" }
  
  // Copyright (C) 2013-2021 Free Software Foundation, Inc.
  //
  // This file is part of the GNU ISO C++ Library.  This library is free
  // software; you can redistribute it and/or modify it under the
  // terms of the GNU General Public License as published by the
  // Free Software Foundation; either version 3, or (at your option)
  // any later version.
  
  // This library is distributed in the hope that it will be useful,
  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  // GNU General Public License for more details.
  
  // You should have received a copy of the GNU General Public License along
  // with this library; see the file COPYING3.  If not see
  // <http://www.gnu.org/licenses/>.
  
  namespace modifiers_remove_prefix {
  
  static void
  test01 ()
  {
    using gdb::string_view;
  
    string_view str0{"olympus mons"};
    string_view::pointer p = str0.data();
    str0.remove_prefix(4);
    VERIFY( str0.data() == p + 4);
    VERIFY( str0.length() == 8 );
    VERIFY( str0 == string_view{"pus mons"} );
  }
  
  #ifndef GDB_STRING_VIEW
  constexpr bool
  test02()
  {
    using std::string_view;
  
    string_view str0{"olympus mons"};
    string_view::pointer p = str0.data();
    str0.remove_prefix(4);
    if ( str0.data() != p + 4)
      return false;
    if ( str0.length() != 8 )
      return false;
    if ( str0 != string_view{"pus mons"} )
      return false;
  
    return true;
  }
  #endif
  
  static int
  main ()
  { 
    test01();
  #ifndef GDB_STRING_VIEW
    static_assert( test02() );
  #endif
  
    return 0;
  }
  
  } // namespace modifiers_remove_prefix
  