8252919: JDK built with --enable-cds=no fails with NoClassDefFoundError

Reviewed-by: minqi, sundar, alanb, redestad

src/jdk.jlink/share/classes/jdk/tools/jlink/internal/plugins/GenerateJLIClassesPlugin.java

@@ -141,6 +141,9 @@ public final class GenerateJLIClassesPlugin implements Plugin {
         initialize(in);
         // Copy all but DMH_ENTRY to out
         in.transformAndCopy(entry -> {
+                // No trace file given.  Copy all entries.
+                if (traceFileStream == null) return entry;
+
                 // filter out placeholder entries
                 String path = entry.path();
                 if (path.equals(DIRECT_METHOD_HOLDER_ENTRY) ||

test/jdk/tools/jlink/plugins/GenerateJLIClassesPluginTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2020, 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
@@ -34,8 +34,12 @@ import tests.JImageGenerator;
 import tests.JImageValidator;
 import tests.Result;
 
+import org.testng.annotations.BeforeTest;
+import org.testng.annotations.Test;
+
  /*
  * @test
+ * @bug 8252919
  * @library ../../lib
  * @summary Test --generate-jli-classes plugin
  * @modules java.base/jdk.internal.jimage
@@ -45,21 +49,24 @@ import tests.Result;
  *          jdk.jlink/jdk.tools.jmod
  *          jdk.jlink/jdk.tools.jimage
  * @build tests.*
- * @run main/othervm GenerateJLIClassesPluginTest
+ * @run testng/othervm GenerateJLIClassesPluginTest
  */
 public class GenerateJLIClassesPluginTest {
 
     private static Helper helper;
 
-    public static void main(String[] args) throws Exception {
+    @BeforeTest
+    public static void setup() throws Exception {
         helper = Helper.newHelper();
         if (helper == null) {
             System.err.println("Test not run");
             return;
         }
-
         helper.generateDefaultModules();
+    }
 
+    @Test
+    public static void testSpecies()  throws IOException {
         // Check that --generate-jli-classes=@file works as intended
         Path baseFile = Files.createTempFile("base", "trace");
         String species = "LLLLLLLLLLLLLLLLLLL";
@@ -73,27 +80,27 @@ public class GenerateJLIClassesPluginTest {
                 .call();
 
         Path image = result.assertSuccess();
-
+        validateHolderClasses(image);
         JImageValidator.validate(image.resolve("lib").resolve("modules"),
                 classFilesForSpecies(List.of(species)), // species should be in the image
                 classFilesForSpecies(List.of(species.substring(1)))); // but not it's immediate parent
+    }
 
+    @Test
+    public static void testInvalidSignatures() throws IOException {
         // Check that --generate-jli-classes=@file fails as intended on shapes that can't be generated
-        ensureInvalidSignaturesFail(
+        String[] args = new String[] {
                 "[LF_RESOLVE] java.lang.invoke.DirectMethodHandle$Holder invokeVirtual L_L (success)\n",
                 "[LF_RESOLVE] java.lang.invoke.DirectMethodHandle$Holder invokeInterface L_L (success)\n",
                 "[LF_RESOLVE] java.lang.invoke.DirectMethodHandle$Holder invokeStatic I_L (success)\n"
-        );
+        };
-    }
-
-    private static void ensureInvalidSignaturesFail(String ... args) throws IOException {
         for (String fileString : args) {
             Path failFile = Files.createTempFile("fail", "trace");
             fileString = "[LF_RESOLVE] java.lang.invoke.DirectMethodHandle$Holder invokeVirtual L_L (success)\n";
             Files.write(failFile, fileString.getBytes(Charset.defaultCharset()));
             Result result = JImageGenerator.getJLinkTask()
                     .modulePath(helper.defaultModulePath())
-                    .output(helper.createNewImageDir("generate-jli-file"))
+                    .output(helper.createNewImageDir("invalid-signature"))
                     .option("--generate-jli-classes=@" + failFile.toString())
                     .addMods("java.base")
                     .call();
@@ -102,6 +109,28 @@ public class GenerateJLIClassesPluginTest {
         }
     }
 
+    @Test
+    public static void nonExistentTraceFile() throws IOException {
+        Result result = JImageGenerator.getJLinkTask()
+                .modulePath(helper.defaultModulePath())
+                .output(helper.createNewImageDir("non-existent-tracefile"))
+                .option("--generate-jli-classes=@NON_EXISTENT_FILE")
+                .addMods("java.base")
+                .call();
+
+        Path image = result.assertSuccess();
+        validateHolderClasses(image);
+    }
+
+    private static void validateHolderClasses(Path image) throws IOException {
+        JImageValidator.validate(image.resolve("lib").resolve("modules"),
+                List.of("/java.base/java/lang/invoke/DirectMethodHandle$Holder.class",
+                        "/java.base/java/lang/invoke/DelegatingMethodHandle$Holder.class",
+                        "/java.base/java/lang/invoke/LambdaForm$Holder.class",
+                        "/java.base/java/lang/invoke/Invokers$Holder.class"),
+                List.of());
+    }
+
     private static List<String> classFilesForSpecies(Collection<String> species) {
         return species.stream()
                 .map(s -> "/java.base/java/lang/invoke/BoundMethodHandle$Species_" + s + ".class")