[bugs #12044] find still hangs on dead NFS filesystems on Solaris

[Dmitry V. Levin]

Follow-up Comment #13, bugs #12044 (project findutils):

Ouch, safely_chdir_lstat() gets too complicated to be sure it will work as
expected.

I see one potential minor issue with findutils-nostatmountpt-1.patch:

In safely_chdir_lstat(), if wd_sanity_check() call fails and
RETRY_IF_SANITY_CHECK_FAILS == isfatal, then if fchdir(dotfd) also fails,
then you cannot proceed with directory traversal, since you cannot return to
proper place from the "wrong" directory.
I don't know when fchdir(dotfd) may fail, though.

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