[Bug libstdc++/13631] Problems in messages

["mrsam at courier-mta dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #16 from mrsam at courier-mta dot com  2009-06-15 11:13 -------
After staring at the code for a while, I'm leaning towards thinking that this
change does not really change the application ABI, so the soname bump is not
needed.

As far as I can tell, there are no public members of std::messages, so
applications never access instances of std::messages, the only thing they do is
invoke the inlined methods, which call the virtual methods. I don't think that
the addition of a class member affects the instances' vtable.

Applications do not construct instances of std::messages. I don't think
anything gets exposed that does that, this is done by libstdc++, so as long as
libstdc++ gets rebuilt using the new class definition, that's all that's
needed. use_facet() does not expose any code that constructs the class, that's
done elsewhere.

So, without any class members being accessed, and no constructions or
destructions occuring as part of the ABI, scratch the soname bump -- I don't
think it's needed.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13631