running 4.4 libstdc++ testsuite using 4.5's libstdc++ shared library

[Matthias Klose]

On 26.06.2010 20:01, Mark Mitchell wrote:
> But, I do think we should make that clear by changing the SONAME when we
> are aware of an incompatible change, even to "experimental" stuff.  Or
> else, we should completely disable experimental stuff in releases,
> unless some special configuration option is used.  I think we shouldn't
> have the experimental stuff out there in a way that people can use it
> *and* change its ABI *and* not adjust the SONAME.

Is there a way to identify "experimental" stuff? E.g. would it be possible to 
have a warning triggered by an option -Wlibstdcxx-experimental?

   Matthias