bug#78509: Coreutils' mv and cp 9.5 do not work properly on old PPC Mac OS X 10.4.11, Tiger

[Pádraig Brady]

On 21/05/2025 20:13, Peter Dyballa via GNU coreutils Bug Reports wrote:
> > Am 20.Mai.2025 um 19:10 schrieb Paul Eggert <eggert@cs.ucla.edu>:
> >
> > First, please build and run coreutils 9.7
>
> The tests stop in
>
>         PASS: tests/cp/dir-vs-file.sh
>         PASS: tests/cp/existing-perm-dir.sh
>
> at
>
>         + mkfifo_or_skip_ fifo
>         + test 1 = 1
>         + mkfifo fifo
>         + touch fifo-copy
>         + chgrp 502 fifo
>         + chgrp 262 fifo-copy
>         + chmod g+r fifo-copy
>         + cp -p --copy-contents fifo fifo-copy
>         + pid=10841
>         cp: cannot stat 'fifo-copy/fifo': Not a directory
>
> After waiting 40 min I had, at around 19:00 h:
>
>    -rw-r--r--   1 macports admin  6677 21. Mai 18:25 existing-perm-race.log
>    -rw-r--r--   1 macports admin  6194 21. Mai 18:25 existing-perm-dir.log
>    -rw-r--r--   1 macports admin    82 21. Mai 18:25 existing-perm-dir.trs
>
> Then, two hours ago, I killed 'make check'…

I've not looked at the main issue at hand,
but the tests shouldn't hang. We already protect some
fifo interactions with `timeout 60`, so I've pushed this change
to avoid such hangs similarly in future:
https://git.sv.gnu.org/cgit/coreutils.git/commit/?id=dc4e6b670

cheers,
Padraig