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Now that lstat() reports junction points with S_IFLNK/S_ISLINK(), and unlink() can unlink them, there is no need for conditional code for Windows in a few places. That was expressed by testing for WIN32 or S_ISLNK, which we can now constant-fold. The coding around pgwin32_is_junction() was a bit suspect anyway, as we never checked for errors, and we also know that errors can be spuriously reported because of transient sharing violations on this OS. The lstat()-based code has handling for that. This also reverts4fc6b6eeon master only. That was done because lstat() didn't previously work for symlinks (junction points), but now it does. Tested-by: Andrew Dunstan <andrew@dunslane.net> Discussion: https://postgr.es/m/CA%2BhUKGLfOOeyZpm5ByVcAt7x5Pn-%3DxGRNCvgiUPVVzjFLtnY0w%40mail.gmail.com (cherry picked from commit5fc88c5d53) Author: Thomas Munro <tmunro@postgresql.org> Author: Alexandra Wang <alexandra.wang.oss@gmail.com>