1 files changed, 41 insertions, 0 deletions
diff --git a/tests/ls/infloop.sh b/tests/ls/infloop.sh
new file mode 100755
index 0000000..62c1013
--- /dev/null
+++ b/tests/ls/infloop.sh
@@ -0,0 +1,41 @@
+#!/bin/sh
+# show that the following no longer makes ls infloop
+# mkdir loop; cd loop; ln -s ../loop sub; ls -RL
+# Also ensure ls exits with status = 2 in that case.
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ ls
+
+mkdir loop || framework_failure_
+ln -s ../loop loop/sub || framework_failure_
+
+cat <<\EOF > exp-out || framework_failure_
+loop:
+sub
+EOF
+
+cat <<\EOF > exp-err || framework_failure_
+ls: loop/sub: not listing already-listed directory
+EOF
+
+# Ensure that ls exits with status 2 upon detecting a cycle
+returns_ 2 timeout 10 ls -RL loop >out 2>err || fail=1
+
+compare exp-err err || fail=1
+compare exp-out out || fail=1
+
+Exit $fail