[PATCH] Don't complain undefined weak dynamic reference

[Alan Modra]

On Thu, Apr 25, 2019 at 02:20:00PM -0700, H.J. Lu wrote:
> When undefined non-weak references in IR objects are optimized out
> by LTO, we can have weak dynamic referencs to symbols marked with
> bfd_link_hash_undefined.  We shouldn't complain such undefined weak
> dynamic references.

Looks good to me.

> bfd/
> 
> 	PR ld/24486
> 	* elflink.c (elf_link_output_extsym): Don't complain undefined
> 	weak dynamic reference.
> 
> ld/
> 
> 	PR ld/24486
> 	* testsuite/ld-plugin/lto.exp: Run PR ld/24486 tests.
> 	* testsuite/ld-plugin/pr24486a.c: New file.
> 	* testsuite/ld-plugin/pr24486b.c: Likewise.
> 	* testsuite/ld-plugin/pr24486c.c: Likewise.

-- 
Alan Modra
Australia Development Lab, IBM