[Bug bootstrap/66448] [6 Regression] Bootstrap fails on darwin after r224161

["dominiq at lps dot ens.fr" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66448

--- Comment #19 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
(In reply to Iain Sandoe from comment #18)
> > Could you test it properly on darwin?
>
> $ grep -rH "invalid DW" gcc/testsuite |wc -l
>       0

Confirmed on x86_64-apple-darwin14 with 
--enable-languages=c,c++,fortran,objc,obj-c++,ada,java,lto. Thanks.

> OK - so now I have one remaining problem.  The change in my intial patch to
> make the creation of the "extern int __CFConstantStringClassReference" lazily,
> regresses obj-c++ (and, yes, I do care - it's needed to build some interesting
> projects).

Confirmed.

> (we need to move forward to unbreak Darwin bootstrap, so that we don't get
> behind on catching other things - so I'd be inclined to the original patch as
> band-aid, in the interim, if all elase fails)

IMO the priority is to fix the bootstrap and test suite failures. Once this is
done, it will be time to file PR(s) for the remaining issue(s).

Note that pr65809 has been fixed between r224139 (FAIL) and r224288.