toolchain/gcc/libstdc++-v3/testsuite/27_io/basic_istream/extractors_arithmetic/char/13.cc

   1 // 1999-04-12 bkoz
   2
   3 // Copyright (C) 1999, 2000, 2002, 2003 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 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 // 27.6.1.2.2 arithmetic extractors
  22
  23 #include <istream>
  24 #include <sstream>
  25 #include <locale>
  26 #include <testsuite_hooks.h>
  27
  28 std::string str_01;
  29 std::string str_02("true false 0 1 110001");
  30 std::string str_03("-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5");
  31 std::string str_04("0123");
  32
  33 std::stringbuf isbuf_01(std::ios_base::in);
  34 std::stringbuf isbuf_02(str_02, std::ios_base::in);
  35 std::stringbuf isbuf_03(str_03, std::ios_base::in);
  36 std::stringbuf isbuf_04(str_04, std::ios_base::in);
  37
  38 std::istream is_01(NULL);
  39 std::istream is_02(&isbuf_02);
  40 std::istream is_03(&isbuf_03);
  41 std::istream is_04(&isbuf_04);
  42 std::stringstream ss_01(str_01);
  43
  44 // libstdc++/3720 part two
  45 void test13()
  46 {
  47   using namespace std;
  48   bool test __attribute__((unused)) = true;
  49   const char* l2 = "1.2345678901234567890123456789012345678901234567890123456"
  50                    "  "
  51                    "1246.9";
  52
  53   // 1
  54   // used to core.
  55   double d;
  56   istringstream iss1(l2);
  57   iss1 >> d;
  58   iss1 >> d;
  59   VERIFY (d > 1246 && d < 1247);
  60
  61   // 2
  62   // quick test for failbit on maximum length extraction.
  63   int i;
  64   int max_digits = numeric_limits<int>::digits10 + 1;
  65   string digits;
  66   for (int j = 0; j < max_digits; ++j)
  67     digits += '1';
  68   istringstream iss2(digits);
  69   iss2 >> i;
  70   VERIFY( !iss2.fail() );
  71
  72   digits += '1';
  73   i = 0;
  74   iss2.str(digits);
  75   iss2.clear();
  76   iss2 >> i;
  77   VERIFY( i == 0 );
  78   VERIFY( iss2.fail() );
  79 }
  80
  81 int main()
  82 {
  83   test13();
  84   return 0;
  85 }