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Re: The problem with linkonce sections in ELF
On Thu, Feb 03, 2000 at 11:09:24PM -0500, Ian Lance Taylor wrote:
> Date: Thu, 3 Feb 2000 18:48:52 -0800
> From: "H . J . Lu" <hjl@valinux.com>
>
> For some reason, linker decides to strip the input relocation
> section, .rel.gnu.linkonce.t._._19srvr_message_list_c.
>
> The linker always strips all input relocation sections. That is
> correct behaviour.
>
> I still don't understand what the actual problem is.
>
The probelm is the output .rel.text section consists of .rel.text,
.rel.text.* and .rel.gnu.linkonce.t*. All the them are generated
by the linker. With -Bsymbolic, elf_i386_size_dynamic_sections calls
if (info->shared && info->symbolic)
elf_i386_link_hash_traverse (elf_i386_hash_table (info),
elf_i386_discard_copies,
(PTR) NULL);
It is very possible that one of the .rel.gnu.linkonce.t* relocations
created by the linker will be striped by _bfd_strip_section_from_output.
When it happens, the output .rel.text section will be removed although
there are other .rel.text, .rel.text.* and .rel.gnu.linkonce.t* left.
I think _bfd_strip_section_from_output has to be 100% sure that
all linker generated relocations are striped before it removes
the output relocation section.
H.J.