libstdc++-v3/testsuite/27_io/basic_istream/extractors_character/wchar_t/lwg2499_neg.cc

   1 // Copyright (C) 2020-2024 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-do compile { target c++20 } }
  19
  20 // LWG 2499
  21 // operator>>(basic_istream&, CharT*) makes it hard to avoid buffer overflows
  22
  23 #include <istream>
  24
  25 void
  26 test01(std::wistream& in, wchar_t* wc)
  27 {
  28   in >> wc; // { dg-error "no match" }
  29 }
  30
  31 struct WT : std::char_traits<wchar_t> { };
  32
  33 void
  34 test02(std::basic_istream<wchar_t, WT>& in, wchar_t* wc)
  35 {
  36   in >> wc; // { dg-error "no match" }
  37 }
  38
  39 // { dg-excess-errors "" }