libstdc++-v3/testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc

   1 // Copyright (C) 2019-2024 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 "-fchar8_t -Wno-stringop-overread" }
  19 // { dg-do run { target c++17 } }
  20 // { dg-additional-options "-Wno-deprecated-declarations" { target c++20 } }
  21
  22 #include <filesystem>
  23 #include <string_view>
  24 #include <testsuite_hooks.h>
  25
  26 namespace fs = std::filesystem;
  27
  28 void
  29 test01()
  30 {
  31   fs::path p = fs::u8path(u8"");
  32   VERIFY( p.empty() );
  33
  34   p = fs::u8path(u8"filename1");
  35   VERIFY( p.u8string() == u8"filename1" );
  36
  37   p = fs::u8path(u8"\xf0\x9d\x84\x9e");
  38   VERIFY( p.u8string() == u8"\U0001D11E" );
  39
  40   // The following triggers -Wstringop-overread.  See PR 102958.
  41   std::u8string s1 = u8"filename2";
  42   p = fs::u8path(s1);
  43   VERIFY( p.u8string() == u8"filename2" );
  44
  45   std::u8string s2 = u8"filename3";
  46   p = fs::u8path(s2.begin(), s2.end());
  47   VERIFY( p.u8string() == u8"filename3" );
  48
  49   std::u8string_view sv1{ s1 };
  50   p = fs::u8path(sv1);
  51   VERIFY( p.u8string() == u8"filename2" );
  52
  53   std::u8string_view sv2{ s2 };
  54   p = fs::u8path(sv2.begin(), sv2.end());
  55   VERIFY( p.u8string() == u8"filename3" );
  56 }
  57
  58 int
  59 main()
  60 {
  61   test01();
  62 }