--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/serviceability/jvmti/TestLambdaFormRetransformation.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,141 @@
+/*
+ * 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 8008678
+ * @summary JSR 292: constant pool reconstitution must support pseudo strings
+ * @library /test/lib
+ * @modules java.base/jdk.internal.misc
+ *          java.instrument
+ *          java.management
+ *          jdk.jartool/sun.tools.jar
+ * @compile -XDignore.symbol.file TestLambdaFormRetransformation.java
+ * @run main TestLambdaFormRetransformation
+ */
+
+import java.io.IOException;
+import java.lang.instrument.ClassFileTransformer;
+import java.lang.instrument.IllegalClassFormatException;
+import java.lang.instrument.Instrumentation;
+import java.lang.instrument.UnmodifiableClassException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.security.ProtectionDomain;
+import java.util.Arrays;
+
+import jdk.test.lib.process.ExitCode;
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.process.ProcessTools;
+
+public class TestLambdaFormRetransformation {
+    private static String MANIFEST = String.format("Manifest-Version: 1.0\n" +
+                                                   "Premain-Class: %s\n" +
+                                                   "Can-Retransform-Classes: true\n",
+                                                   Agent.class.getName());
+
+    private static String CP = System.getProperty("test.classes");
+
+    public static void main(String args[]) throws Throwable {
+        Path agent = TestLambdaFormRetransformation.buildAgent();
+        OutputAnalyzer oa = ProcessTools.executeTestJvm("-javaagent:" +
+                                agent.toAbsolutePath().toString(), "-version");
+        oa.shouldHaveExitValue(ExitCode.OK.value);
+    }
+
+    private static Path buildAgent() throws IOException {
+        Path manifest = TestLambdaFormRetransformation.createManifest();
+        Path jar = Files.createTempFile(Paths.get("."), null, ".jar");
+
+        String[] args = new String[] {
+            "-cfm",
+            jar.toAbsolutePath().toString(),
+            manifest.toAbsolutePath().toString(),
+            "-C",
+            TestLambdaFormRetransformation.CP,
+            Agent.class.getName() + ".class"
+        };
+
+        sun.tools.jar.Main jarTool = new sun.tools.jar.Main(System.out, System.err, "jar");
+
+        if (!jarTool.run(args)) {
+            throw new Error("jar failed: args=" + Arrays.toString(args));
+        }
+        return jar;
+    }
+
+    private static Path createManifest() throws IOException {
+        Path manifest = Files.createTempFile(Paths.get("."), null, ".mf");
+        byte[] manifestBytes = TestLambdaFormRetransformation.MANIFEST.getBytes();
+        Files.write(manifest, manifestBytes);
+        return manifest;
+    }
+}
+
+class Agent implements ClassFileTransformer {
+    private static Runnable lambda = () -> {
+        System.out.println("I'll crash you!");
+    };
+
+    public static void premain(String args, Instrumentation instrumentation) {
+        if (!instrumentation.isRetransformClassesSupported()) {
+            System.out.println("Class retransformation is not supported.");
+            return;
+        }
+        System.out.println("Calling lambda to ensure that lambda forms were created");
+
+        Agent.lambda.run();
+
+        System.out.println("Registering class file transformer");
+
+        instrumentation.addTransformer(new Agent());
+
+        for (Class c : instrumentation.getAllLoadedClasses()) {
+            if (c.getName().contains("LambdaForm") &&
+                instrumentation.isModifiableClass(c)) {
+                System.out.format("We've found a modifiable lambda form: %s%n", c.getName());
+                try {
+                    instrumentation.retransformClasses(c);
+                } catch (UnmodifiableClassException e) {
+                    throw new AssertionError("Modification of modifiable class " +
+                                             "caused UnmodifiableClassException", e);
+                }
+            }
+        }
+    }
+
+    public static void main(String args[]) {
+    }
+
+    @Override
+    public byte[] transform(ClassLoader loader,
+                            String className,
+                            Class<?> classBeingRedefined,
+                            ProtectionDomain protectionDomain,
+                            byte[] classfileBuffer
+                           ) throws IllegalClassFormatException {
+        System.out.println("Transforming " + className);
+        return classfileBuffer.clone();
+    }
+}