owner, component changed

olli — Wed, 17 Feb 2016 08:34:30 GMT

owner changed from olli to chris_kohlhoff
component coroutine → asio

You must not install/call an async_result inside a exception handler (catch-block). The exception handler might reside on the stack or might removed from the stack (including the variables) if left. Especially MS is unspecific what happens under the hood (in contrast to C++-Itanium exception ABI).

A small modification of your code prevents the error (async_result is allocated outside the exception handler):

spawn( ios, [&ios]( auto yield ){
        bool failed = false;
        try{
            throw std::runtime_error{ "" };
        }catch( ... ){
            std::cerr << "[1] " << std::endl;
            failed = true;
        }
        if (failed){
            yield_completion_t completion{ yield_context{ yield } };
            auto handler = completion.handler;
            ios.post( [=]
            {
                std::this_thread::sleep_for( seconds{ 1 } );
                asio_handler_invoke( handler, &handler );
            } );
            completion.result.get();
            std::cerr << "[2] " << std::endl;
        }
    } );

Boost C++ Libraries: Ticket #11991: Application crashes when yield/resume an coroutine after handing an exception

owner, component changed