Re: A chained exception (base) class for C++

Hi all,

I'm currently trying to come up with a decent exception base class for
some modules of ours and was thinking about adding exception-chaining
(yes, like in Java :-)
The following points where important for me:
* Must inherit from std::exception
* Should allow for a std::exception to be the start of the exception chain.
* throw by value / catch by const reference

As exception chaining seems to be rather obscure with C++, I'm
interested what other think about the solution (find code below).

thanks,
br,
Martin

--CODE--
[**** Usage would then roughly be like this ***]
using namespace std;
using namespace my_project_ns;

void f3e() {
    throw std::runtime_error("Any std::exception will do ...");
}

void f2e() {
    try {
        f3e();
    }
    catch(std_exc_catch_t e) {
        throw chained_exception("My exc", &e);