[Bug c++/27177] [4.1/4.2/4.3 Regression] ICE in build_simple_base_path, at cp/class.c:474

["crowl at google dot com" <gcc-bugzilla@gcc.gnu.org>]

------- Comment #20 from crowl at google dot com  2008-01-21 20:49 -------
Subject: Re:  [4.1/4.2/4.3 Regression] ICE in build_simple_base_path, at
cp/class.c:474

On 21 Jan 2008 02:00:07 -0000, mmitchel at gcc dot gnu dot org
<gcc-bugzilla@gcc.gnu.org> wrote:
>
>
> ------- Comment #19 from mmitchel at gcc dot gnu dot org  2008-01-21 02:00 -------
> Lawrence, thanks for looking into this.
>
> Was there any consensus on whether or not these are static_casts in this
> context?

The discussion didn't say so explicitly, but the obvious conclusion was
that they were static_casts.

> I'm guessing that the eventual resolution is going to be something like
> saying that a cast is a static_cast even if the class is incomplete, so long
> as the bases are known, but that such a static_cast can only be used
> in an un-evaluated context.  Is that correct?

If I understand correctly, this issue can only arise in constant expressions.
In any other context (as in default arguments or member bodies) the class
would be complete, and hence the issue is moot.  Is there something that
you had in mind?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27177