libstdc++-v3/testsuite/27_io/ios_base/storage/2.cc

   1 // 2000-12-19 bkoz
   2
   3 // Copyright (C) 2000, 2002, 2003, 2004 Free Software Foundation
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 2, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // 27.4.2.5 ios_base storage functions
  22
  23 // XXX This test will not work for some versions of irix6 because of
  24 // XXX bug(s) in libc malloc for very large allocations.  However
  25 // XXX -lmalloc seems to work.
  26 // See http://gcc.gnu.org/ml/gcc/2002-05/msg01012.html
  27 // { dg-options "-lmalloc" { target mips*-*-irix6* } }
  28
  29 #include <sstream>
  30 #include <iostream>
  31 #include <testsuite_hooks.h>
  32
  33 // libstdc++/3129
  34 void test02()
  35 {
  36   bool test __attribute__((unused)) = true;
  37   int max = std::numeric_limits<int>::max() - 1;
  38   std::stringbuf        strbuf;
  39   std::ios              ios(&strbuf);
  40
  41   ios.exceptions(std::ios::badbit);
  42
  43   long l = 0;
  44   void* v = 0;
  45
  46   // pword
  47   ios.pword(1) = v;
  48   VERIFY( ios.pword(1) == v );
  49
  50   try
  51     {
  52       v = ios.pword(max);
  53     }
  54   catch(std::ios_base::failure& obj)
  55     {
  56       // Ok.
  57       VERIFY( ios.bad() );
  58     }
  59   catch(...)
  60     {
  61       VERIFY( test = false );
  62     }
  63   VERIFY( v == 0 );
  64
  65   VERIFY( ios.pword(1) == v );
  66
  67   // max is different code path from max-1
  68   v = &test;
  69   try
  70     {
  71       v = ios.pword(std::numeric_limits<int>::max());
  72     }
  73   catch(std::ios_base::failure& obj)
  74     {
  75       // Ok.
  76       VERIFY( ios.bad() );
  77     }
  78   catch(...)
  79     {
  80       VERIFY( test = false );
  81     }
  82   VERIFY( v == &test );
  83
  84   // iword
  85   ios.iword(1) = 1;
  86   VERIFY( ios.iword(1) == 1 );
  87
  88   try
  89     {
  90       l = ios.iword(max);
  91     }
  92   catch(std::ios_base::failure& obj)
  93     {
  94       // Ok.
  95       VERIFY( ios.bad() );
  96     }
  97   catch(...)
  98     {
  99       VERIFY( test = false );
 100     }
 101   VERIFY( l == 0 );
 102
 103   VERIFY( ios.iword(1) == 1 );
 104
 105   // max is different code path from max-1
 106   l = 1;
 107   try
 108     {
 109       l = ios.iword(std::numeric_limits<int>::max());
 110     }
 111   catch(std::ios_base::failure& obj)
 112     {
 113       // Ok.
 114       VERIFY( ios.bad() );
 115     }
 116   catch(...)
 117     {
 118       VERIFY( test = false );
 119     }
 120   VERIFY( l == 1 );
 121
 122 }
 123
 124 int main(void)
 125 {
 126   __gnu_test::set_memory_limits();
 127   test02();
 128   return 0;
 129 }