diff --git a/bin/sh/tests/execution/Makefile b/bin/sh/tests/execution/Makefile
index 92aecc854d1..1f92c1a835f 100644
--- a/bin/sh/tests/execution/Makefile
+++ b/bin/sh/tests/execution/Makefile
@@ -37,6 +37,7 @@ ${PACKAGE}FILES+=		redir4.0
 ${PACKAGE}FILES+=		redir5.0
 ${PACKAGE}FILES+=		redir6.0
 ${PACKAGE}FILES+=		redir7.0
+${PACKAGE}FILES+=		set-C1.0
 ${PACKAGE}FILES+=		set-n1.0
 ${PACKAGE}FILES+=		set-n2.0
 ${PACKAGE}FILES+=		set-n3.0
diff --git a/bin/sh/tests/execution/set-C1.0 b/bin/sh/tests/execution/set-C1.0
new file mode 100644
index 00000000000..7877a33989b
--- /dev/null
+++ b/bin/sh/tests/execution/set-C1.0
@@ -0,0 +1,12 @@
+# $FreeBSD$
+
+T=$(mktemp -d "${TMPDIR:-/tmp}/sh-test.XXXXXXXX") || exit
+trap 'rm -rf "$T"' 0
+
+set -C
+echo . >"$T/a" &&
+[ -s "$T/a" ] &&
+{ ! true >"$T/a"; } 2>/dev/null &&
+[ -s "$T/a" ] &&
+ln -s /dev/null "$T/b" &&
+true >"$T/b"