[patch, libffi] Sync merge libffi

[Iain Sandoe]

Hi Dominique,

On 15 Mar 2012, at 18:46, Dominique Dhumieres wrote:
> I have posted at http://gcc.gnu.org/ml/gcc-testresults/2012-03/msg01799.html
> the regtests on powerpc-apple-darwin9 with the patch. I still get  
> the following
> failures

thanks - I think the priority is to get this (unwind) patch sorted  
out ...

(Note that I've confirmed with David that the unwind patch is local to  
Darwin, so I will ping that in due course).

---

... I was aware that these (new) tests failed:
> FAIL: libffi.call/err_bad_abi.c -O0 -W -Wall execution test
> FAIL: libffi.call/err_bad_abi.c -O2 execution test
> FAIL: libffi.call/err_bad_abi.c -O3 execution test
> FAIL: libffi.call/err_bad_abi.c -Os execution test
> FAIL: libffi.call/err_bad_abi.c -O2 -fomit-frame-pointer execution  
> test


David Edelsohn was kind enough to point out that a patch for this has  
been posted to libffi-discuss,

http://sourceware.org/ml/libffi-discuss/2012/msg00070.html

unfortunately my schedule is a little hectic right now, and I've not  
had time to try it.

cheers
Iain