ld: linking to GNU_UNIQUE symbol does not set ELFOSABI_GNU

[Alan Modra]

On Thu, Jan 24, 2013 at 12:31:37PM +0100, Florian Weimer wrote:
> I think this might be the appropriate fix:
> 
>   if (((abfd->flags & DYNAMIC) == 0
>         && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
>       || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
>     elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;

This would mark a binary that merely linked against a shared library
having gnu_unique symbols.  The binary would not even have to
reference such symbols.

I'm not sure your premise is correct anyway.  STB_GNU_UNIQUE seems to
be relevant to the definition of a symbol, not a reference.  Which
leads me to think that ld probably should not give undefined symbols
an STB_GNU_UNIQUE binding.

-- 
Alan Modra
Australia Development Lab, IBM