[v2 PATCH] elf: Verify that there is only one default version

[H.J. Lu]

On Wed, Aug 26, 2026 at 11:35 AM H.J. Lu <hjl.tools@gmail.com> wrote:
>
> When assigning the symbol version, verify that there is only one default
> version.
>

Here is the v2 patch to provide info of where multiple default versions
are defined:

ld -shared -o pr34550.so pr34550a.o pr34550b.o --version-script pr34550.t
/usr/local/bin/ld: pr34550.so: multiple default versions of `fmod':
`GLIBC_2.0' in pr34550a.o and `GLIBC_2.43' in pr34550b.o.
/usr/local/bin/ld: failed to set dynamic section sizes: bad value

-- 
H.J.
---
When assigning the symbol version, verify that there is only one default
version.

bfd/

PR ld/34550
* elflink.c (_bfd_elf_link_assign_sym_version): Verify that there
is only one default version.

ld/

PR ld/34550
* testsuite/ld-elf/pr34550.d: New test.
* testsuite/ld-elf/pr34550.t: Likewise.
* testsuite/ld-elf/pr34550a.s: Likewise.
* testsuite/ld-elf/pr34550b.s: Likewise.
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