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0b4beaf46f
Commit aa467e6e, "Cygwin: add AF_UNIX reparse points to path handling", changed check_reparse_point_target so that it could return a positive value on a known reparse point that is not a symlink. But some of the code in check_reparse_point that handles this positive return value was executed unconditionally, when it should have been executed only for symlinks. As a result, posixify could be called on a buffer containing garbage, and check_reparse_point could erroneously return a positive value on a non-symlink. This is now fixed so that posixify is only called if the reparse point is a symlink, and check_reparse_point returns 0 if the reparse point is not a symlink. Also fix symlink_info::check to handle this last case, in which check_reparse_point returns 0 on a known reparse point.
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