libstdc++-v3/testsuite/27_io/fpos/mbstate_t/4_neg.cc

   1 // Copyright (C) 2003-2023 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 // 27.4.3 fpos
  19
  20 // { dg-do compile }
  21
  22 #include <ios>
  23
  24 void test04()
  25 {
  26   std::streampos pos;
  27   long n;
  28
  29   // Implicit conversion
  30   n = pos; // { dg-error "cannot convert" "" { xfail *-*-* } }
  31
  32   // Explicit conversion
  33   n = static_cast<long>(pos); // { dg-error "invalid static_cast" "" { xfail *-*-* } }
  34
  35   n = n; // Suppress unused warning.
  36 }
  37
  38 int main()
  39 {
  40   test04();
  41   return 0;
  42 }