[cxx-abi-dev] C++ ABI version 2

[John McCall]

On Nov 21, 2013, at 12:24 AM, Anthony Williams <anthony at justsoftwaresolutions.co.uk> wrote:
> On 20/11/13 01:57, Richard Smith wrote:
>> There are a few things in the current ABI which are known to be
>> suboptimal, but we cannot change because doing so would introduce an ABI
>> break. However, vendors sometimes get an opportunity to break their ABI
>> (or are defining a new ABI), and for some vendors, this is a very common
>> occurrence. To this end, I think it would be valuable for the ABI
>> document to describe what we might want to put in a 'Version 2' of the
>> ABI; that is, a set of changes that we recommend be made whenever a
>> vendor has a chance to introduce an ABI break.
> 
>> Are there any other things that it would make sense to change in a
>> version 2 of the ABI?
> 
> If people are willing to make an ABI change, it would be great if they
> could add in the necessary information to allow std::current_exception
> to take a copy of the exception rather than increasing the reference
> count on the existing exception.

You should not expect that anybody is going to make an ABI change
to an existing platform.

John.