--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/langtools/tools/javac/options/release/ReleaseOptionClashes.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @bug 8072480
+ * @summary Verify option clash between --release and -source is reported correctly.
+ * @modules jdk.compiler/com.sun.tools.javac.util:open
+ */
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import javax.tools.Tool;
+import javax.tools.ToolProvider;
+
+public class ReleaseOptionClashes {
+    public static void main(String... args) throws Exception {
+        new ReleaseOptionClashes().run();
+    }
+
+    void run() throws Exception {
+        doRunTest("7", "-bootclasspath", "any");
+        doRunTest("7", "-Xbootclasspath:any");
+        doRunTest("7", "-Xbootclasspath/a:any");
+        doRunTest("7", "-Xbootclasspath/p:any");
+        doRunTest("7", "-endorseddirs", "any");
+        doRunTest("7", "-extdirs", "any");
+        doRunTest("7", "-source", "8");
+        doRunTest("7", "-target", "8");
+        doRunTest("9", "--system", "none");
+        doRunTest("9", "--upgrade-module-path", "any");
+    }
+
+    void doRunTest(String release, String... args) throws Exception {
+        System.out.println("Testing clashes for arguments: " + Arrays.asList(args));
+        Class<?> log = Class.forName("com.sun.tools.javac.util.Log", true, cl);
+        Field useRawMessages = log.getDeclaredField("useRawMessages");
+        useRawMessages.setAccessible(true);
+        useRawMessages.setBoolean(null, true);
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+        List<String> options = new ArrayList<>();
+        options.addAll(Arrays.asList("--release", release));
+        options.addAll(Arrays.asList(args));
+        options.add(System.getProperty("test.src") + File.separator + "ReleaseOptionClashes.java");
+        compiler.run(null, null, out, options.toArray(new String[0]));
+        useRawMessages.setBoolean(null, false);
+        if (!out.toString().equals(String.format("%s%n%s%n",
+                                                 "javac: javac.err.release.bootclasspath.conflict",
+                                                 "javac.msg.usage")) &&
+            //-Xbootclasspath:any produces two warnings: one for -bootclasspath and one for -Xbootclasspath:
+            !out.toString().equals(String.format("%s%n%s%n%s%n%s%n",
+                                                 "javac: javac.err.release.bootclasspath.conflict",
+                                                 "javac.msg.usage",
+                                                 "javac: javac.err.release.bootclasspath.conflict",
+                                                 "javac.msg.usage"))) {
+            throw new AssertionError(out);
+        }
+        System.out.println("Test PASSED.  Running javac again to see localized output:");
+        compiler.run(null, null, System.out, options.toArray(new String[0]));
+    }
+
+    Tool compiler = ToolProvider.getSystemJavaCompiler();
+    ClassLoader cl = compiler.getClass().getClassLoader();
+}