C++ PATCH: Fix PR 862

[Jason Merrill]

>>>>> "Mark" == Mark Mitchell <mark@codesourcery.com> writes:

>>>>> "Jason" == Jason Merrill <jason_merrill@redhat.com> writes:
Jason> Please don't remove -fvtable-gc on the trunk; it should be
Jason> fixed before long.

> Too late. :-(

> I didn't really do anything significant: just moved it into
> unsupported_options; all the code is there.  If we fix it, it will be
> trivial to turn it back on.  In the meantime, we won't fool people
> into thinking it works.

It has certainly worked (on some targets) in the recent past; it may need
some tweaking to work with the new ABI, but I would not be surprised if it
worked now.  It doesn't make sense to me to disable a useful (and actively
used, if mostly on embedded targets) flag because it might have a couple of
bugs.

Jason