On Wednesday, 11 November 2015 at 17:19:51 UTC, Iain Buclaw wrote:
Please no. I've done my fair share of investigating this in libunwind, and it just isn't worth it.
Ok I know Walter won't listen, and I wouldn't be as radical as Iain, but I concur. There are thing that can be done to improve C++ and D interrop with Exception. For instance, SDC makes sure that C++ exception unwind properly through D and vice versa, but don't allow to catch across language.
There is a reason for that. To be able to catch C++ exceptions, you need to duplicate the whole RTTI mechanism from C++ + runtime support for it + hook oneself in the C++ runtime to signal catching and rethrowing.
This is definitively not impossible, but the cost benefit ratio is such as I wouldn't prioritize this. There are definitively more way to have impact without summoning a Golem when it comes to C++ interrop.
