cpp20_intro.cpp example crashes with Boost.Async

[mzimbres]

The example below will crash with Boost.Async

#include <boost/asio.hpp>
#include <boost/async.hpp>
#include <boost/redis.hpp>
#include <iostream>

#include <boost/redis/src.hpp>

namespace async = boost::async;
namespace asio = boost::asio;

using boost::redis::request;
using boost::redis::response;
using boost::redis::config;
using boost::redis::connection;

async::detached run(std::shared_ptr<connection> conn)
{
   co_await conn->async_run({}, {}, async::use_op);
}

async::main co_main(int argc, char **argv)
{
   auto conn = std::make_shared<connection>(co_await async::this_coro::executor);

   run(conn);

   request req;
   req.push("PING", "Hello world");

   response<std::string> resp;

   co_await conn->async_exec(req, resp, async::use_op);
   conn->cancel();

   std::cout << "PING: " << std::get<0>(resp).value() << std::endl;
   co_return 0;
}

Output:

debian2[0]$ ./example/boost_async_example_http 
(Boost.Redis) Resolve results: 127.0.0.1:6379
(Boost.Redis) Connected to endpoint: 127.0.0.1:6379
(Boost.Redis) Bytes written: 140
(Boost.Redis) Hello: Success
PING: Hello world
(Boost.Redis) Connection lost: Operation canceled
munmap_chunk(): invalid pointer
Aborted