[Boost-users] [coroutine] - only std exceptions are caught from coroutines

Subject: [Boost-users] [coroutine] - only std exceptions are caught from coroutines
From: Tamas.Ruszkai_at_[hidden]
Date: 2016-02-19 11:14:31

Hi,

I use boost coroutines and I have realized
that in my environment (Visual Studio 2015 Update 1, x64)  I cannot
catch the exception type of a custom exception.

The example below demonstrates the case.
I have a custom exception derived from a std::runime_error. In the main
function I want to catch my custom exception type that was thrown in the
coroutine.
However somehow I always end up in the
catch branch of the std::runtime_error.

Are custom exceptions are not supported
by the coroutines library?


Regards,
Tamas

class
MyError
: public
std::runtime_error
{
public:
        MyError()
           
    : runtime_error("rt
error")
        {
        }

        explicit
MyError(char
const*
_Message)
           
    : runtime_error(_Message)
        {
        }


        explicit
MyError(runtime_error
const&
_Other)
           
    : runtime_error(_Other)
        {
        }
};

void
cooperative(boost::coroutines::coroutine<void>::push_type
&sink)
{
        sink();
        throw
MyError("error");
}

void
main()
        {

           
    boost::coroutines::coroutine<void>::pull_type
source(&cooperative);
           
    try
           
    {
           
            source();
           
    }
           
    catch
(const
MyError
&e)
           
    {
           
            std::cerr <<
e.what() <<
'\n';
           
    }
           
    catch
(const
std::runtime_error
&e)
           
    {
           
            std::cerr <<
e.what() <<
'\n';
           
    }
           
    catch
(const
std::exception
&e)
           
    {
           
            std::cerr <<
e.what() <<
'\n';
           
    }
        }