id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
8613,"[Windows] boost::asio::ip::tcp::socket::async_write(boost::asio::null_buffers(), ...) WriteHandler gets a boost::system::error_code with a NULL category pointer on success",Segev Finer <segev208@…>,chris_kohlhoff,"The `boost::asio::ip::tcp::socket::async_write()` WriteHandler gets a `boost::system::error_code` with a `NULL` category pointer on success.

This is essentially an invalid `boost::system::error_code` that will cause an access violation when you try to print it has the code doesn't expect the category pointer to be `NULL`.

`boost::system::error_code` is printed like so:
{{{#!c++
os << ec.category().name() << ':' << ec.value();
}}}
Which throws an access violation when `ec.category()` tries to dereference the unexpected NULL category pointer which shouldn't happen.

Code that reproduces this problem:
{{{#!c++
#include <iostream>
#include <boost/asio.hpp>
#include <boost/bind.hpp>

using boost::asio::ip::tcp;

void write_handler(const boost::system::error_code & ec)
{
	std::cout << ec << std::endl;
}

int main(void)
{
	boost::asio::io_service io_service;

	tcp::resolver resolver(io_service);
	tcp::resolver::query query(""www.google.com"", ""80"");
	tcp::resolver::iterator endpoint_iterator = resolver.resolve(query);

	boost::asio::ip::tcp::socket socket(io_service);
	boost::asio::connect(socket, endpoint_iterator);

	socket.async_write_some(boost::asio::null_buffers(), boost::bind(write_handler, boost::asio::placeholders::error));

	io_service.run();
}
}}}",Bugs,closed,To Be Determined,asio,Boost 1.53.0,Problem,fixed,,