Use C++ exception model in D

[deadalnix]

On Wednesday, 9 April 2014 at 17:27:56 UTC, David Nadlinger wrote:
> On Wednesday, 9 April 2014 at 16:48:54 UTC, Jacob Carlborg 
> wrote:
>> x86_64 yes, not necessarily only for DMD. I thought if DMD, 
>> LDC and GDC all used the same exception handling model and the 
>> same as C++ it would be easier. Especially for implementing 
>> support for Objective-C exceptions, which is why initially 
>> started this thread.
>
> They don't. GDC and LDC use libunwind, whereas DMD uses its own 
> custom EH implementation.
>
> With GDC and LDC, you'd just need to add your code to handle 
> Objective-C exceptions to the personality functions. libunwind 
> exceptions have a "type"/"source language" field, and by 
> default most implementations either ignore unknown exception 
> types or abort on encountering them.
>
> David

The C++ personality function from GCC does not catch, but do the 
cleanup on foreign exceptions. That sound like the right behavior 
to me.