Any libunwind experts n da house?

[Jacob Carlborg via Digitalmars-d]

On 2014-09-23 19:37, Andrei Alexandrescu wrote:
> We need a libunwind expert to figure out a good approach for handling
> exceptions thrown by C++ code into D.

BTW, are you only interested in handling C++ exception, or are you 
interested in handling D exceptions in C++ as well?

One ugly hack is to register a terminate handler. Then in the handler 
extract the necessary information from the exception, create a D 
exception with this information and throw it as a regular D exception.

Throwing a D exception that should be catchable in C++ is a bit more 
tricky. It's possible to wrap the a call to a D function in a try-catch 
block. Convert the D exception to a C++ exception, then throw it using a 
function part of the C++ exception runtime. The problem here is that C++ 
won't be able to catch this exception because there's no personality 
function (or similar) setup by the D compiler.

Ideally D should just use the same exception mechanism as C++. I don't 
think a language change is necessary for this. Changes in the compiler, 
yes, but hopefully not in the language.

-- 
/Jacob Carlborg