--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/langtools/tools/doclint/DuplicateParamTest.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,24 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8081820
+ * @summary Validate parameter names uniqueness
+ * @modules jdk.compiler/com.sun.tools.doclint
+ * @build DocLintTester
+ * @run main DocLintTester -Xmsgs:-reference DuplicateParamTest.java
+ * @run main DocLintTester -ref DuplicateParamTest.out DuplicateParamTest.java
+ */
+
+/** . */
+public class DuplicateParamTest {
+
+    /**
+     * Test.
+     *
+     * @param s one
+     * @param s two
+     * @param s three
+     *
+     * @return number
+     */
+    public static int Test(String s) { return s.length(); }
+}