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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.
-- Florian Weimer / Red Hat Product Security Team
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