1 files changed, 33 insertions, 0 deletions
diff --git a/tests/split/guard-input.sh b/tests/split/guard-input.sh
new file mode 100755
index 0000000..812b6a5
--- /dev/null
+++ b/tests/split/guard-input.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+# ensure split doesn't overwrite input with output.
+
+# Copyright (C) 2012-2022 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_ split
+
+seq 10 | tee exp-1 > xaa
+ln -s xaa in2
+ln xaa in3
+
+returns_ 1 split -C 6 xaa || fail=1
+returns_ 1 split -C 6 in2 || fail=1
+returns_ 1 split -C 6 in3 || fail=1
+returns_ 1 split -C 6 - < xaa || fail=1
+
+compare exp-1 xaa || fail=1
+
+Exit $fail