Any libunwind experts n da house?

[Iain Buclaw via Digitalmars-d]

On 23 September 2014 23:56, Walter Bright via Digitalmars-d
<digitalmars-d at puremagic.com> wrote:
> On 9/23/2014 3:45 PM, Andrei Alexandrescu wrote:
>>
>> On 9/23/14, 3:15 PM, Iain Buclaw via Digitalmars-d wrote:
>>>
>>> On 23 September 2014 22:29, deadalnix via Digitalmars-d
>>> <digitalmars-d at puremagic.com> wrote:
>>>>
>>>> On Tuesday, 23 September 2014 at 17:37:42 UTC, Andrei
>>>> Alexandrescu wrote:
>>>>>
>>>>>
>>>>> We need a libunwind expert to figure out a good approach for handling
>>>>> exceptions thrown by C++ code into D.
>>>>>
>>>>> Is anyone fluent with libunwind?
>>>>>
>>>>>
>>>>> Andrei
>>>>
>>>>
>>>>
>>>> https://github.com/deadalnix/libsdrt/blob/master/src/d/rt/eh.d
>>>
>>>
>>>
>>> https://github.com/D-Programming-GDC/GDC/blob/master/libphobos/libdruntime/gcc/deh.d
>>>
>>>
>>> :o)
>>
>>
>> Noice. How difficult would be to port this to dmd/Linux? This is big - we
>> need
>> to get it done, and soon.
>>
>> Andrei
>
>
> There is a problem, that code is gpl licensed. It may not actually matter,
> since this code is only to interface with gpl libraries, but we should be
> careful.

As well as the license, there's also two technical details that need
to be addressed to fit with the features of dmd EH.

1) Exception chaining - still on my todo
2) OOM exceptions could be handled better.

By all means, I'm happy with you to use it as a point of reference.

What you'll find is that pretty much all GCC frontend personality
routines are essentially identical, barring the of handling it's own
exception object / data.

Iain.