[Bug lto/65015] LTO produces randomly ordered debug information

["rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65015

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to conchur from comment #5)
> Thanks for the patches. I've rebuild the gcc package (which took the whole
> afternoon + night on my machine) and can verify that the mini testcases are
> now working perfectly fine.
> 
> I've also tried this with some other projects (shared objects and
> executables) and it now seems to work even without -flto-partition=none
> 
> Is there any problem with the uncommitted patch that I should know about?
> Could this patch theoretically be applied in Debian or there problems which
> the Debian gcc-4.9 maintainers should know about?

I've posted an alternative patch for review as some people thought there might
be DWARF consumers that don't like dropping DW_AT_name, thus the alternative is
to set it to sth like <artificial> (like in the alternate patch).  The patch
isn't reviewed yet.

Once it's approved I plan to backport the patch to relevant branches.