https://bugs.winehq.org/show_bug.cgi?id=50773
--- Comment #3 from Martin Storsjö martin@martin.st --- (In reply to Erich E. Hoover from comment #2)
I don't believe that there's a straightforward way to implement this, see https://linux.die.net/man/2/fchmodat: AT_SYMLINK_NOFOLLOW If pathname is a symbolic link, do not dereference it: instead operate on the link itself. This flag is not currently implemented.
Ok, fair enough - if this one can't be practically implemented, the cases where it matters in the testsuite I'm trying to run can be skipped fairly easily.