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Re: GCC Cauldron: Notes from the C++ ABI BOF

On 20 July 2012 14:04, Jonathan Wakely wrote:
> On 20 July 2012 12:43, Jakub Jelinek wrote:
>> using a new std::list and std::pair, or the old one (well, std::pair is a
>> bad example probably, std::string and std::list is good, what other types we
>> are going to change?).
> I need to add a new virtual function and rename an existing virtual
> function for a base class in <future>.  That's for C++11 types only,
> but doing the change will create an incompatibility with previous
> releases.  (I don't know whether it's better to just make that change
> while we still call C++11 support experimental or to wait and use the
> new type attribute to make it a different type with the "_cxx11" tag.)
> I think there are some changes needed to the hierarchy of exception
> classes, to add std::system_error as a base class of std::ios_failure.
> I don't know if adding move semantics to iostream classes can be done
> without ABI changes (I haven't looked into it.)

I've just remembered that std::reverse_iterator has been in need of an
ABI change for years now, see LWG DR 198 and PR 51823.

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