id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
3632	match_results and singular iterator woes with msvc-10.0	Eric Niebler	John Maddock	"Hi John, I just fixed a similar issue in xpressive and thought that it would probably manifest in your lib, too. Sure enough. The msvc-10.0 beta has new iterator debugging that is very strict. The following code causes a crash in match_results::swap:

{{{
#include <boost/regex.hpp>

int main()
{
    using namespace boost;
    regex rx(""\\w+"");
    smatch what0, what1;
    std::string hello(""hello"");
    if(regex_match(hello, what0, rx))
    {
        what0.swap(what1);
    }
}
}}}

The problem is that what1.m_base is a singular iterator at this point. The swap tries to assign from it, which is verboten.
"	Bugs	closed	Boost 1.43.0	regex	Boost Development Trunk	Problem	fixed	regex iterator debugging msvc-10.0