*** empty log message ***

diff --git a/tests/du/hard-link b/tests/du/hard-link
new file mode 100755 (executable)
index 0000000..7853cde
--- /dev/null
+++ b/tests/du/hard-link
@@ -0,0 +1,41 @@
+#!/bin/sh
+# Ensure that hard-linked files are counted (and listed) only once.
+# Likewise for excluded directories.
+
+if test "$VERBOSE" = yes; then
+  set -x
+  du --version
+fi
+
+. $srcdir/../envvar-check
+. $srcdir/../lang-default
+
+pwd=`pwd`
+t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
+trap 'status=$?; cd $pwd; chmod -R u+rwx $t0; rm -rf $t0 && exit $status' 0
+trap '(exit $?); exit $?' 1 2 13 15
+
+framework_failure=0
+mkdir -p $tmp || framework_failure=1
+cd $tmp || framework_failure=1
+
+mkdir dir dir/sub
+( cd dir && { echo non-empty > f1; ln f1 f2; echo non-empty > sub/F; } )
+
+if test $framework_failure = 1; then
+  echo "$0: failure in testing framework" 1>&2
+  (exit 1); exit 1
+fi
+
+fail=0
+
+du -a --exclude=sub dir | sed 's/^[0-9][0-9]*  //' > out || fail=1
+cat <<\EOF > exp
+dir/f1
+dir
+EOF
+
+cmp out exp || fail=1
+test $fail = 1 && diff out exp 2> /dev/null
+
+(exit $fail); exit $fail