dtar produces corrupted archive with symlinks and `--preserve-{xattrs,acl,flags}`

[rezib]

For example:

$ ls -lh test/
total 4.0K
-rw-rw-r-- 1 remi remi 4 Mar  6 14:07 file1
lrwxrwxrwx 1 remi remi 5 Mar  6 14:07 symlink1 -> file1
$ mpirun --mca mpi_abort_print_stack 1 -N 4 /home/remi/Documents/git/cea/env/bin/dtar --preserve-xattrs -cf archive.tar test
[2025-03-06T14:09:23] Walking /path/to/test
[2025-03-06T14:09:23] Walked 3 items in 0.003 secs (935.879 items/sec) ...
[2025-03-06T14:09:23] Walked 3 items in 0.003 seconds (888.621 items/sec)
[2025-03-06T14:09:23] Writing archive to archive.tar
[2025-03-06T14:09:23] Items: 3
[2025-03-06T14:09:23]   Directories: 1
[2025-03-06T14:09:23]   Files: 1
[2025-03-06T14:09:23]   Links: 1
[2025-03-06T14:09:23] Data: 4.000 B (4.000 B per file)
[2025-03-06T14:09:23] Sorted 3 items in 0.000 seconds (9201.325 items/sec)
[2025-03-06T14:09:23] Truncating archive
[2025-03-06T14:09:23] Gathering index
[2025-03-06T14:09:23] Writing index as last entry in archive.tar
[2025-03-06T14:09:23] Writing entry headers
[2025-03-06T14:09:23] Copying file data
[2025-03-06T14:09:23] Started:   Mar-06-2025, 14:09:23
[2025-03-06T14:09:23] Completed: Mar-06-2025, 14:09:23
[2025-03-06T14:09:23] Seconds: 0.003
[2025-03-06T14:09:23] Archive size: 8.500 KiB
[2025-03-06T14:09:23] Rate: 3.040 MiB/s (8704 bytes in 0.003 seconds)

The generated archive is corrupted:

$ tar -tf archive.tar 
test/
test/file1
test/symlink1
tar: Skipping to next header
archive.tar.dtaridx
tar: Exiting with failure status due to previous errors