Minor optimization:

(process_file): Don't record dev/inode for directories.

Under some circumstances, without -c, du would mistakenly count the
space of hard-linked files, not just the first one it encountered.
Reported by Anthony Thyssen.
(du_files): Don't ever clear the set of `seen' dev/inodes.

1 files changed, 1 insertions, 6 deletions

diff --git a/src/du.c b/src/du.c
index eb0212249..bd1d7c5c7 100644
--- a/src/du.c
+++ b/src/du.c
@@ -377,6 +377,7 @@ process_file (FTS *fts, FTSENT *ent)
      via a hard link, then don't let it contribute to the sums.  */
   if (skip
       || (!opt_count_all
+	  && ! S_ISDIR (sb->st_mode)
 	  && 1 < sb->st_nlink
 	  && hash_ins (sb->st_ino, sb->st_dev)))
     {
@@ -518,12 +519,6 @@ du_files (char **files, int bit_flags)
 	    }
 	  FTS_CROSS_CHECK (fts);
 
-	  /* This is a space optimization.  If we aren't printing totals,
-	     then it's ok to clear the duplicate-detection tables after
-	     each command line hierarchy has been processed.  */
-	  if (ent->fts_level == 0 && ent->fts_info == FTS_D && !print_grand_total)
-	    hash_clear (htab);
-
 	  process_file (fts, ent);
 	}