C++/D interface: exceptions

[David Nadlinger via Digitalmars-d]

On Friday, 12 September 2014 at 22:50:50 UTC, Sean Kelly wrote:
> I'm hoping it's simply a matter of sticking the right data in a
> lookup table and letting the C++ runtime figure out what the
> proper match is for us.

I suggest familiarizing yourself with how libunwind works. Look 
up personality routines, or even just peruse GCC's 
libstdc++-v3/libsupc++/eh_personality.cc or Clang's 
libcxxabi/src/cxa_{exception, personality}.cpp.

> D currently has a custom mechanism for throwing on non-Windows
> platforms, but it may be worth switching to the established C++
> approach, provided we can do so without losing anything (and 
> this is a big "if" given how we implicitly chain exceptions).

s/D/DMD/. And yes, LDC does implement exception chaining.