[PATCH] PR ld/20103: Skip an archive element if not added by linker

[Alan Modra]

On Tue, May 17, 2016 at 07:24:08PM -0700, H.J. Lu wrote:
> During archive rescan to resolve symbol references for files added by
> LTO, linker add_archive_element callback is called to check if an
> archive element should added.  After all IR symbols have been claimed,
> linker won't claim new IR symbols and shouldn't add the LTO archive
> element.  This patch updates linker add_archive_element callback to
> return FALSE when seeing an LTO archive element during rescan and
> changes ELF linker to skip such archive element.  Other linker backends
> may also need similar update.
> 
> Tested on x86.  OK for master?

Not without a lot more explanation and justification why this is
correct, in particular the plugin_call_claim_file change.

-- 
Alan Modra
Australia Development Lab, IBM