C++: Guidelines for ABI-preserving changes

[Ángel González]

On 21/08/12 16:11, Florian Weimer wroe:
> I'm looking for a document which describes common changes which do not
> change the ABI of a library.  There are a few possible changes listed
> under:
>
> <http://gcc.gnu.org/onlinedocs/libstdc++/manual/abi.html>
>
> , but I hope there are more possibilities, such as adding a virtual
> member function at the end of the class definition, assuming that the
> class had any virtual member functions before, and there are no
> classes deriving from it.
>
> Recommendations for increasing the range of ABI-preserving changes
> (mainly the pImpl idiom) would be welcome as well.
>
> Does such a document exist already?
You may find this article interesting
http://techbase.kde.org/Policies/Binary_Compatibility_Issues_With_C++