C++,v3 PATCH for c++/42983 (virtual vs. default)

[Paolo Carlini]

On 02/10/2010 10:54 PM, Jason Merrill wrote:
> The consensus on issue 906 in Santa Cruz was to require defaulted
> virtual functions to be defaulted outside the class so that it's clear
> they are user-provided.  This required a few changes in the library; I
> dealt with it by just providing inline definitions after the class
> definition; do library folks want something else?
Thanks for asking. Personally, I'm certainly ok with that type of
solution. To be safe, let's add in CC the mailing list.

Paolo.