[Patch gas/mach-o] pre-output error check hook.

[Alan Modra]

On Mon, Feb 20, 2012 at 08:33:20AM +0000, Iain Sandoe wrote:
> Hello Alan,
> 
> On 20 Feb 2012, at 00:35, Alan Modra wrote:
> 
> >On Fri, Feb 17, 2012 at 08:24:27PM +0000, Iain Sandoe wrote:
> >>In a way, I'm surprised that no-one else wants to do this - which
> >>makes me wonder if I've missed an alternate implementation?
> >
> >Is md_end too soon?
> 
> I think so - I think it needs to be after:
>  dwarf debugging finish
>  cfi finish
> 
> that will cause additional relocs to be emitted (unless it can be
> guaranteed that those are correct, which is not obvious; e.g. for
> personality routine references).

Fair enough.

>  and subsegs finish, since we want to examine the subseg contents.
> 
> However, should the call be in as.c rather than in write.c?

Doesn't matter as far as I'm concerned.  Patch OK.

-- 
Alan Modra
Australia Development Lab, IBM