id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
7538	boost::spirit::istream_iterator does not handle incrememt correctly at the end	zhuo.qiang@…	Joel de Guzman	"{{{boost::spirit::istream_iterator}}} (or its super class {{{multi_pass}}} )does not handle incrememt correctly at the end position. 
One more end char will be yielded which is incorrect:

{{{
#!cpp
#include <sstream>
#include <boost/spirit/include/support_istream_iterator.hpp>
#include <boost/test/minimal.hpp>

int test_main(int, char*[])
{
    std::istringstream in(""12"");
    boost::spirit::istream_iterator it(in), end;

    BOOST_CHECK(*it++ == '1');
    BOOST_CHECK(*it++ == '2');

    // it should be end now, however it failed
    BOOST_CHECK(it == end); // !failed here
    // and yield the last char once more
    BOOST_CHECK(*it != '2'); // !failed here

    // only after another dereference will it really equal to end
    BOOST_CHECK(it == end);

    return 0;
}
}}}

The output is:
{{{
test.cpp(14): test it == end failed in function: 'int test_main(int, char **)'
test.cpp(16): test *it != '2' failed in function: 'int test_main(int, char **)'

**** 2 errors detected
}}}

#6750 may be a duplicated issue.

Reproducable under:

* Apple clang version 4.1 (tags/Apple/clang-421.11.65) (based on LLVM 3.1svn)
* Target: x86_64-apple-darwin12.2.0
* With C++ 11 turn on: ""-std=c++11 -stdlib=libc++""
* Boost 1.52 and Boost Trunk rev.81030

 "	Bugs	new	To Be Determined	spirit	Boost 1.52.0	Showstopper		spirit, istream_iterator, multi_pass