libstdc++-v3/testsuite/27_io/ios_base/types/iostate/case_label.cc

   1 // { dg-do compile { target c++11 } }
   2 // { dg-options "-Wall" }
   3 // -*- C++ -*-
   4
   5 // Copyright (C) 2004-2024 Free Software Foundation, Inc.
   6
   7 // This library is free software; you can redistribute it and/or
   8 // modify it under the terms of the GNU General Public License as
   9 // published by the Free Software Foundation; either version 3, or (at
  10 // your option) any later version.
  11
  12 // This library is distributed in the hope that it will be useful, but
  13 // WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 // General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License
  18 // along with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21
  22 // Benjamin Kosnik  <bkoz@redhat.com>
  23
  24 #include <ios>
  25
  26 // PR libstdc++/17922
  27 // -Wall
  28 typedef std::ios_base::iostate bitmask_type;
  29
  30 void
  31 case_labels(bitmask_type b)
  32 {
  33   switch (b)
  34     {
  35     case std::ios_base::goodbit:
  36       break;
  37     case std::ios_base::badbit:
  38       break;
  39     case std::ios_base::eofbit:
  40       break;
  41     case std::ios_base::failbit:
  42       break;
  43     case std::_S_ios_iostate_end:
  44       break;
  45     case __INT_MAX__:
  46       break;
  47     case ~__INT_MAX__:
  48       break;
  49     }
  50   using underlying_type = std::underlying_type<bitmask_type>::type;
  51   static_assert( sizeof(underlying_type) == sizeof(int),
  52       "underlying type has same range of values as int");
  53 }