[PATCH] PR debug/61352 back port from mainline

[Joel Brobecker]

> >   The attached patch is a back port of the change from
> > https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=211067 for
> > gcc-4_9-branch. Bootstrap and regression tested on
> > x86_64-apple-darwin14 with Xcode 6.3. Okay for gcc-4_9-branch?
> >           Jack
> > <PR61352_backport.diff>
> 
> Ok.
> 
> Committed revision 222835.

FTR - for those who do not follow bugzilla PRs, we have found that
dsymutil is not working well at all: missing DWARF dies, SEGVs, not
working well with -gno-strict-dwarf.

As said in the PR, I don't think this is the right solution,
particularly since we don't have any control on dsymutil's quality
and features. I suggest we revert this patch, and try to understand
why GDB wasn't able to pull the debugging info from the executable
(assuming that's still an issue).

Thanks,
-- 
Joel