id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
1481	transform_width may cause buffer overruns	anonymous	Robert Ramey	"When using boost::archive::iterators::transform_width iterator for e.g. base64 encoding, and number of input bits does not fit into an integer number of output bits, the iterator dereferences an element beyond the last available.

Consider this piece of code:

{{{
typedef std::vector<unsigned char> bytes;

bytes b;
b.push_back(1);

typedef
    base64_from_binary<
        transform_width<
             bytes::const_iterator,
             6,
             sizeof(bytes::value_type) * 8, char> > base64;

std::stringstream o;
std::copy(base64(b.begin()), base64(b.end()), std::ostream_iterator<char>(o));
}}}

Provided vector::const_iterator implementation does checks against dereferencing an invalid iterator (e.g. vc8 stl), the above code will assert, because of an attempt to read the second (non-existant) element from the vector"	Bugs	closed	To Be Determined	serialization	Boost 1.34.0	Problem	wontfix