diff --git a/test/units/testsuite-22.17.sh b/test/units/testsuite-22.17.sh
new file mode 100755
index 0000000000..d6b53601ed
--- /dev/null
+++ b/test/units/testsuite-22.17.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# Test for C-style escapes in file names and contents
+set -eux
+set -o pipefail
+
+data="\x20foo\nbar"
+dst="/tmp/x/\x20a\nb"
+
+systemd-tmpfiles --create - <<EOF
+f     "$dst" 0644 0 0 - $data
+EOF
+
+diff /tmp/x/x20anb <(printf "\x20foo\nbar")