[Bug libc/34509] [m68k] Regression: Perl locks up after upgrading glibc to 2.43

https://sourceware.org/bugzilla/show_bug.cgi?id=34509

--- Comment #5 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
Here is how I can reproduce it with Perl:

(sid_m68k-dchroot)root@mitchy:/# gdb --args /usr/bin/perl /usr/bin/updmap --sys
--nohash
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Reading symbols from /usr/bin/perl...

This GDB supports auto-downloading debuginfo from the following URLs:
  <https://debuginfod.debian.net>
Enable debuginfod for this session? (y or [n]) y
Debuginfod has been enabled.
To make this setting permanent, add 'set debuginfod enabled on' to .gdbinit.
(No debugging symbols found in /usr/bin/perl)
(gdb) r
Starting program: /usr/bin/perl /usr/bin/updmap --sys --nohash
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/m68k-linux-gnu/libthread_db.so.1".
[Detaching after fork from child process 23750]
[Detaching after fork from child process 23753]
[Detaching after fork from child process 23754]
[Detaching after fork from child process 23755]
[Detaching after fork from child process 23756]
[Detaching after fork from child process 23757]
[Detaching after fork from child process 23758]
[Detaching after fork from child process 23759]
[Detaching after fork from child process 23760]
updmap will read the following updmap.cfg files (in precedence order):
  /usr/share/texmf/web2c/updmap.cfg
  /usr/share/texlive/texmf-dist/web2c/updmap.cfg
updmap may write changes to the following updmap.cfg file:
  /etc/texmf/web2c/updmap.cfg
dvips output dir: "/var/lib/texmf/fonts/map/dvips/updmap"
pdftex output dir: "/var/lib/texmf/fonts/map/pdftex/updmap"
dvipdfmx output dir: "/var/lib/texmf/fonts/map/dvipdfmx/updmap"
[Detaching after fork from child process 23762]

^C
Program received signal SIGINT, Interrupt.
Download failed: Invalid argument.  Continuing without source file
./math/../sysdeps/m68k/m680x0/fpu/e_fmod.c.
0xc005c938 in __fmod (x=1786484129, y=60) at
../sysdeps/m68k/m680x0/fpu/e_fmod.c:31
⚠ warning: 31  ../sysdeps/m68k/m680x0/fpu/e_fmod.c: No such file or directory
(gdb) bt
#0  0xc005c938 in __fmod (x=1786484129, y=60) at
../sysdeps/m68k/m680x0/fpu/e_fmod.c:31
#1  0x80190a04 in Perl_gmtime64_r ()
#2  0x41da9ee5 in ?? ()
#3  0x68400000 in ?? ()
#4  0x404e0000 in ?? ()
#5  0x00000000 in ?? ()
(gdb)

The <Ctrl+C> invocation was necessary because the script just hung.

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