request suggestions/proofread for DR

[brent verner <brent at rcfile dot org>]

Hi,

After dealing with the num_get::do_get thingy, and studying the 14882,
I believe a DR is due (maybe in me :). Below is a draft of the DR I
plan on submitting. I would appreciate it if the membership of this
list would give me a sanity check, as well as any suggestions.

Thank you.
  Brent

i=====================================================================
// Defect Report: 22.2.2.1.2 num_get virtual functions
//
// please consider the following:

#include <iostream>
#include <sstream>

void
loopy()
{
  std::istringstream iss(" 1 2 3 4 5 ");
  //   or even 
  //std::istringstream iss(" ");
  int num;
  int i=0;
  while ( iss >> num ){
    std::cout << num << std::endl;
  }
  return;
}

/* 
   iss will have ios_base::eofbit before ios_base::failbit,
   causing an infinite loop.

   contrast that with the following which does not loop
   endlessly.
*/

void
dogood()
{
  std::istringstream iss(" one two three four five ");
  std::string num;
  int i=0;
  while ( iss >> num ){
    std::cout << num << std::endl;
  }
  return;
}

int
main()
{
  dogood();
  loopy();
  return 0;
}

/* 
   to cause
      basic_istream<charT,traits>& operator>>(int& n);
   to behave more like
      basic_istream<charT,traits>& operator>>
           (basic_streambuf<char_type,traits>* sb);

   I propose the following addition to clarify this situation.

Location:

22.2.2.1.2 num_get virtual functions
   11 Stage 3: The result of stage 2 processing can be one of

Addition:

     Stage 2 was unable to successfully accumulate and convert 
     any chars to type val. ios_base::failbit is assigned to err.

*/

-- 
Damon Brent Verner                        o      _     _         _
Cracker Jack? Surprise Certified  _o     /\_   _ \\o  (_)\__/o  (_)
brent@rcfile.org                _< \_   _>(_) (_)/<_    \_| \   _|/' \/
brent@linux1.org               (_)>(_) (_)        (_)   (_)    (_)'  _\o_