[Bug c++/55436] g++ compiles invalid code with child class of nested class in template class

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55436

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-12-18 15:29:59 UTC ---
(In reply to comment #6)
> > If it was a serious problem it would have been reported before by more people.
> 
> I'm not sure if the degree of popularity of a bug should diminish its
> seriousness.

If noone else has ever reported it in all the time it's been in GCC it's not
causing a lot of problems, then it's not causing serious problems to most GCC
users.  It's not a regression and there's a workaround (qualify the names) so
it's not P2.

>  This is an "accepts-invalid, rejects-valid, wrong-code" bug,
> which is pretty nasty as far as bugs go.

Almost any name lookup bug can be turned into all three categories, it doesn't
alter its seriousness.

> The use of C++ is expanding (including
> GCC's own code base), meaning this bug is going to bite more people as time
> goes on.

It will get fixed, it doesn't need to be P2 for that.