On Thu, Jun 13, 2013 at 10:22:01AM +0200, Richard Biener wrote:
> On Thu, Jun 13, 2013 at 10:19 AM, Jakub Jelinek <[email protected]> wrote:
> > On Thu, Jun 13, 2013 at 10:12:08AM +0200, Richard Biener wrote:
> >> > When I remove the ": public zzzA" part the earnings disappear. Thus,
> >> > it seems there is an error somewhere... or am I doing something wrong?
> >>
> >> I think you need to avoid using vl_embed vectors because their
> >> implementation
> >> uses offsetof.
> >
> > That is all of them though. vl_ptr uses vl_embed as its vec_ field.
>
> Oh ... ;)
>
> So I suppose we need to avoid the use of offsetof. But of course the whole
> way we construct vec_embedded vectors goes against C++ rules ...
>
> Thus indeed, we only support POD vector element types (we completely
> lack invocations of constructors and destructors for example).
That is probably because we use vec<something> also in contexts where
you can't use non-POD (e.g. va_arg (ap, vec<...>)). That is why vec itself
is a POD too.
Jakub
