[PATCH] elf: Don't set sh_offset of .tbss sections beyond EOF

[H.J. Lu]

On Tue, Apr 29, 2025 at 3:42 PM H.J. Lu <hjl.tools@gmail.com> wrote:
>
> > I'd rather you committed v1.  This one might make a TLS segment with
> > both .tdata and .tbss look a little wierd.
> >
>
> I pushed v1.  I will keep the bug open and see if I can find a solution for
> a TLS segment with  both .tdata and .tbss without looking weird.
>

Here is the patch.  We clamp the .tbss sh_offset within the first page
only if there are no prior .tdata nor .tbss sections.

OK for master?

Thanks.

-- 
H.J.
---
If there are no prior .tdata nor .tbss sections, put meaningless sh_offset
of .tbss sections without file contents somewhere within the first page,
in an attempt to not point past EOF and avoid sh_offset of zero.

bfd/

PR ld/32896
* elf.c (IS_TDATA): New.
(assign_file_positions_for_load_sections): Don't set sh_offset
of .tbss sections beyond EOF.

ld/

PR ld/32896
* testsuite/ld-elf/tbss4.d: Updated.
* testsuite/ld-elf/tbss5.d: New file.
* testsuite/ld-elf/tbss5.s: Likewise.
* testsuite/ld-elf/tbss6.d: Likewise.
* testsuite/ld-elf/tbss6.s: Likewise.
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