Agustín K-ballo Bergé wrote:
On 23/06/2012 18:25, Robert Ramey wrote:
Steven Watanabe wrote:
Actually, inheriting from boost::exception doesn't work for this. To enable copying you have to throw using boost::enable_current_exception.
try { throw enable_current_exception(x); } catch(...) { exception_ptr e = current_exception(); } // move e to another thread rethrow_exception(e);
OK - get it - but I don't see that it adds any value compared to
try { throw x; } catch(...){ exception_ptr e = std::current_exception(); std::rethrow_exception(e); // n3242 18.8} }
Would you happen to know which compilers implement n3242 already? Boost.Exception works for me with the compilers I use everyday, as long as the original exception was thrown with enable_current_exception.
hmm - I really don't know. It looks like boost exception implements this functionality for those compilers which don't have it. Actually this is really good thing in my opinion. If this were a separate library part of the boost directory/namespace I think it would be good addition. But this facility is included in the same library as another facility useful to users. So addressing of one problem - non-conforming compilers is not orthogonal to the other problem - helpful facilities for users. It's not fine grained enough for my taste. Robert Ramey