Hi,
After upgrading to GNU tar 1.31, I am seeing bad behaviour trying to
extract archives containing ./ entries with the -U option. This is
easily reproducible:
$ tar cf - --no-recursion . | tar xUf -
Aborted
The abort() in src/extract.c's maybe_recoverable(), marked with a
comment as unreachable, is in fact reachable in this case.
Either giving an error on the failure to remove ./ (and continuing
extraction of the remaining files in the archive) or silently accepting
the ./ entry would work. GNU tar 1.30 silently accepted it.
Background: I'm using a modified version of Slackware's pkgtools to
manage the software on my system. Its packages are tar archives
containing ./ entries as part of the spec, and it extracts them using
-U, ignoring errors, to handle upgrades better, especially in the case
where an older version of the package provided a symlink where the newer
provides a directory.
Cheers,
Harald van Dijk
