[PATCH] Fix PR c++/29475: Incomplete template diagnostics

[Simon Martin]

Hello Mark.

> > That's the reason why submit the following patch, that "implements" the
> > partial solution that you proposed, i.e. adds an extra argument to
> > perform_or_defer_access_checks, the declaration to use when printing the
> > error message, which is used when the access checks are not deferred, and
> > discarded otherwise. It fixes the test case in this PR, but not the whole
> > problem. I've successfully regtested it on i686-pc-linux-gnu.
>
> This patch is OK, thanks.
Thanks for reviewing this patch. I do not have write access on the SVN 
repository. Would you mind committing it for me whenever you have time?

Thanks in advance.

Best regards,
Simon