Verified:

root@focal:~# dpkg-query -W libc6
libc6:amd64     2.31-0ubuntu9.2
root@focal:~# gdb -q /bin/date
Reading symbols from /bin/date...
(No debugging symbols found in /bin/date)
(gdb) starti
Starting program: /usr/bin/date 

Program stopped.
0x00007ffff7fd0100 in ?? () from /lib64/ld-linux-x86-64.so.2
(gdb) br _dl_debug_state
Breakpoint 1 at 0x7ffff7fe11d0
(gdb) c
Continuing.

Breakpoint 1, 0x00007ffff7fe11d0 in _dl_debug_state () from 
/lib64/ld-linux-x86-64.so.2
(gdb) bt
#0  0x00007ffff7fe11d0 in _dl_debug_state () from /lib64/ld-linux-x86-64.so.2
#1  0x00007ffff7fd2fd1 in ?? () from /lib64/ld-linux-x86-64.so.2
#2  0x00007ffff7febc3b in ?? () from /lib64/ld-linux-x86-64.so.2
#3  0x00007ffff7fd104c in ?? () from /lib64/ld-linux-x86-64.so.2
#4  0x00007ffff7fd0108 in ?? () from /lib64/ld-linux-x86-64.so.2
#5  0x0000000000000001 in ?? ()
#6  0x00007fffffffe8f2 in ?? ()
#7  0x0000000000000000 in ?? ()
root@focal:~# apt install -qq libc6/focal-proposed libc-bin/focal-proposed 
locales/focal-proposed libc6-dev/focal-proposed libc6-dbg/focal-proposed 
libc-dev-bin/focal-proposed 
[...]
root@focal:~# dpkg-query -W libc6
libc6:amd64     2.31-0ubuntu9.4
root@focal:~# gdb -q /bin/date
Reading symbols from /bin/date...
(No debugging symbols found in /bin/date)
(gdb) starti
Starting program: /usr/bin/date 

Program stopped.
0x00007ffff7fd0100 in _start () from /lib64/ld-linux-x86-64.so.2
(gdb) b _dl_debug_state
Breakpoint 1 at 0x7ffff7fe11e0: file dl-debug.c, line 73.
(gdb) c
Continuing.

Breakpoint 1, __GI__dl_debug_state () at dl-debug.c:73
73      dl-debug.c: No such file or directory.
(gdb) bt
#0  __GI__dl_debug_state () at dl-debug.c:73
#1  0x00007ffff7fd2fd1 in dl_main (phdr=<optimized out>, phnum=<optimized out>, 
user_entry=<optimized out>, auxv=<optimized out>) at rtld.c:1661
#2  0x00007ffff7febc4b in _dl_sysdep_start 
(start_argptr=start_argptr@entry=0x7fffffffe700, 
dl_main=dl_main@entry=0x7ffff7fd15e0 <dl_main>) at ../elf/dl-sysdep.c:252
#3  0x00007ffff7fd104c in _dl_start_final (arg=0x7fffffffe700) at rtld.c:449
#4  _dl_start (arg=0x7fffffffe700) at rtld.c:539
#5  0x00007ffff7fd0108 in _start () from /lib64/ld-linux-x86-64.so.2
#6  0x0000000000000001 in ?? ()
#7  0x00007fffffffe8f2 in ?? ()
#8  0x0000000000000000 in ?? ()


** Tags removed: verification-needed verification-needed-focal
** Tags added: verification-done verification-done-focal

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https://bugs.launchpad.net/bugs/1918035

Title:
  ld-2.31.so is not correctly packaged in libc6-dbg

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