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

   1 // Copyright (C) 2020-2021 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 "-std=gnu++2a" }
  19 // { dg-do compile { target c++2a } }
  20
  21 // LWG 2499
  22 // operator>>(basic_istream&, CharT*) makes it hard to avoid buffer overflows
  23
  24 #include <istream>
  25
  26 void
  27 test01(std::istream& in, char* pc, signed char* sc, unsigned char* uc)
  28 {
  29   in >> pc; // { dg-error "here" }
  30   in >> sc; // { dg-error "here" }
  31   in >> uc; // { dg-error "here" }
  32 }
  33
  34 struct CT : std::char_traits<char> { };
  35
  36 void
  37 test02(std::basic_istream<char, CT>& in, char* pc, signed char* sc,
  38        unsigned char* uc)
  39 {
  40   in >> pc; // { dg-error "here" }
  41   in >> sc; // { dg-error "here" }
  42   in >> uc; // { dg-error "here" }
  43 }
  44
  45 // { dg-excess-errors "" }