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

   1 // 2000-12-19 bkoz
   2
   3 // Copyright (C) 2000-2022 Free Software Foundation, Inc.
   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 3, 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 COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 27.4.2.5 ios_base storage functions
  21
  22 // This fails on some versions of Darwin 8 because malloc doesn't return
  23 // NULL even if an allocation fails (filed as Radar 3884894).
  24 // { dg-do run { xfail *-*-darwin8.[0-4].* } }
  25
  26 // Skip test at -m64 on Darwin because RLIMITS are not being honored.
  27 // Radar 6467883: 10.4/10.5 setrlimits are not honored by memory allocators
  28 // Radar 6467884: 10.X systems are not robust when paging space is exceeded
  29 // { dg-skip-if "" { *-*-darwin* && lp64 } }
  30
  31 #include <sstream>
  32 #include <iostream>
  33 #include <limits>
  34 #include <testsuite_hooks.h>
  35
  36 // libstdc++/3129
  37 void test02()
  38 {
  39   bool test = true;
  40   int max = std::numeric_limits<int>::max() - 1;
  41   std::stringbuf        strbuf;
  42   std::ios              ios(&strbuf);
  43
  44   ios.exceptions(std::ios::badbit);
  45
  46   long l = 0;
  47   void* v = 0;
  48
  49   // pword
  50   ios.pword(1) = v;
  51   VERIFY( ios.pword(1) == v );
  52
  53   try
  54     {
  55       v = ios.pword(max);
  56     }
  57   catch(std::ios_base::failure&)
  58     {
  59       // Ok.
  60       VERIFY( ios.bad() );
  61     }
  62   catch(...)
  63     {
  64       VERIFY( false );
  65     }
  66   VERIFY( v == 0 );
  67
  68   VERIFY( ios.pword(1) == v );
  69
  70   // max is different code path from max-1
  71   v = &test;
  72   try
  73     {
  74       v = ios.pword(std::numeric_limits<int>::max());
  75     }
  76   catch(std::ios_base::failure&)
  77     {
  78       // Ok.
  79       VERIFY( ios.bad() );
  80     }
  81   catch(...)
  82     {
  83       VERIFY( false );
  84     }
  85   VERIFY( v == &test );
  86
  87   // iword
  88   ios.iword(1) = 1;
  89   VERIFY( ios.iword(1) == 1 );
  90
  91   try
  92     {
  93       l = ios.iword(max);
  94     }
  95   catch(std::ios_base::failure&)
  96     {
  97       // Ok.
  98       VERIFY( ios.bad() );
  99     }
 100   catch(...)
 101     {
 102       VERIFY( false );
 103     }
 104   VERIFY( l == 0 );
 105
 106   VERIFY( ios.iword(1) == 1 );
 107
 108   // max is different code path from max-1
 109   l = 1;
 110   try
 111     {
 112       l = ios.iword(std::numeric_limits<int>::max());
 113     }
 114   catch(std::ios_base::failure&)
 115     {
 116       // Ok.
 117       VERIFY( ios.bad() );
 118     }
 119   catch(...)
 120     {
 121       VERIFY( false );
 122     }
 123   VERIFY( l == 1 );
 124 }
 125
 126 int main(void)
 127 {
 128   __gnu_test::set_memory_limits();
 129   test02();
 130   return 0;
 131 }