1 /*

     2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /*

    25  * @test

    26  * @bug 8174954

    27  * @library /test/lib

    28  * @modules java.base/jdk.internal.org.objectweb.asm

    29  * @compile -XDignore.symbol.file BSMCalledTwice.java

    30  * @run main BSMCalledTwice

    31  */

    32 

    33 import java.io.File;

    34 import java.io.FileOutputStream;

    35 import java.util.*;

    36 import static jdk.internal.org.objectweb.asm.Opcodes.*;

    37 import jdk.internal.org.objectweb.asm.*;

    38 import jdk.test.lib.process.ProcessTools;

    39 import jdk.test.lib.process.OutputAnalyzer;

    40 

    41 // BSMCalledTwice generates a class file named "TestC.class" that contains

    42 // bytecodes that represent the following program

    43 //

    44 // public class TestC {

    45 //     public static void main(java.lang.String[] arg) {

    46 //         for (int i=0; i < 2; i++) {

    47 //             try {

    48 //                 String f = "friend";

    49 //

    50 //                 // The "hello " + f in the following statement produces an

    51 //                 // invokedynamic with a BSM of

    52 //                 // StringConcatFactory.java/makeConcatWithConstants.

    53 //                 // The ASM below erroneously puts 2 static arguments, "hello "

    54 //                 // and "goodbye" on the stack for the BSM. Causing a exception to

    55 //                 // be thrown when creatingthe CallSite object.

    56 //                 System.out.println("hello " + f); <--------------- invokedynamic

    57 //

    58 //             } catch (Error e) {

    59 //                System.out.println("Caught Error:");

    60 //                System.out.println(e.getMessage());

    61 //                e.printStackTrace();

    62 //             }

    63 //         }

    64 //     }

    65 // }

    66 //

    67 public class BSMCalledTwice implements Opcodes {

    68     static final String classTestCName = "TestC";

    69 

    70     public static int count_makeSite(String text) {

    71         int count = 0;

    72         String text_ptr = text;

    73         while (text_ptr.indexOf("makeSite") != -1) {

    74             text_ptr = text_ptr.substring(text_ptr.indexOf("makeSite") + 1);

    75             count++;

    76         }

    77         return count;

    78     }

    79 

    80     public static void main(String[] args) throws Exception {

    81         ClassLoader cl = new ClassLoader() {

    82             public Class<?> loadClass(String name) throws ClassNotFoundException {

    83                 if (findLoadedClass(name) != null) {

    84                     return findLoadedClass(name);

    85                 }

    86 

    87                 if (classTestCName.equals(name)) {

    88                     byte[] classFile = null;

    89                     try {

    90                         classFile = dumpTestC();

    91                     } catch (Exception e) {

    92                     }

    93                     return defineClass(classTestCName, classFile, 0, classFile.length);

    94                 }

    95                 return super.loadClass(name);

    96              }

    97         };

    98 

    99         cl.loadClass(classTestCName);

   100         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, "-cp", ".",  classTestCName);

   101         OutputAnalyzer output = new OutputAnalyzer(pb.start());

   102         String test_output = output.getOutput();

   103         if (test_output == null) {

   104             throw new RuntimeException("Test failed, null test output");

   105         }

   106         // "makeSite" is currently listed twice in the exception stacks for each

   107         // failing call to the BootstrapMethod.  So more that two calls means

   108         // that the BootstrapMethod was called more than once.

   109         int count = count_makeSite(test_output);

   110         if (count < 1 || count > 2) {

   111             throw new RuntimeException("Test failed, bad number of calls to BootstrapMethod");

   112         }

   113         output.shouldHaveExitValue(0);

   114     }

   115 

   116     public static byte[] dumpTestC () throws Exception {

   117         ClassWriter cw = new ClassWriter(0);

   118         FieldVisitor fv;

   119         MethodVisitor mv;

   120         AnnotationVisitor av0;

   121 

   122         cw.visit(53, ACC_PUBLIC + ACC_SUPER, classTestCName, null, "java/lang/Object", null);

   123 

   124         cw.visitInnerClass("java/lang/invoke/MethodHandles$Lookup",

   125                            "java/lang/invoke/MethodHandles", "Lookup",

   126                            ACC_PUBLIC + ACC_FINAL + ACC_STATIC);

   127 

   128         {

   129             mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);

   130             mv.visitCode();

   131             mv.visitVarInsn(ALOAD, 0);

   132             mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);

   133             mv.visitInsn(RETURN);

   134             mv.visitMaxs(1, 1);

   135             mv.visitEnd();

   136         }

   137         {

   138             mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null);

   139             mv.visitCode();

   140             Label l0 = new Label();

   141             Label l1 = new Label();

   142             Label l2 = new Label();

   143             mv.visitTryCatchBlock(l0, l1, l2, "java/lang/Error");

   144             mv.visitInsn(ICONST_0);

   145             mv.visitVarInsn(ISTORE, 1);

   146             Label l3 = new Label();

   147             mv.visitLabel(l3);

   148             mv.visitFrame(Opcodes.F_APPEND,1, new Object[] {Opcodes.INTEGER}, 0, null);

   149             mv.visitVarInsn(ILOAD, 1);

   150             mv.visitInsn(ICONST_2);

   151             Label l4 = new Label();

   152             mv.visitJumpInsn(IF_ICMPGE, l4);

   153             mv.visitLabel(l0);

   154             mv.visitLdcInsn("friend");

   155             mv.visitVarInsn(ASTORE, 2);

   156             mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");

   157             mv.visitVarInsn(ALOAD, 2);

   158             mv.visitInvokeDynamicInsn("makeConcatWithConstants",

   159                                       "(Ljava/lang/String;)Ljava/lang/String;",

   160                                       new Handle(Opcodes.H_INVOKESTATIC,

   161                                                  "java/lang/invoke/StringConcatFactory",

   162                                                  "makeConcatWithConstants",

   163                                                  "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/invoke/CallSite;"),

   164                                       new Object[]{"hello \u0001", "goodbye"});

   165             mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);

   166             mv.visitLabel(l1);

   167             Label l5 = new Label();

   168             mv.visitJumpInsn(GOTO, l5);

   169             mv.visitLabel(l2);

   170             mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] {"java/lang/Error"});

   171             mv.visitVarInsn(ASTORE, 2);

   172             mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");

   173             mv.visitLdcInsn("Caught Error:");

   174             mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);

   175             mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");

   176             mv.visitVarInsn(ALOAD, 2);

   177             mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Error", "getMessage", "()Ljava/lang/String;", false);

   178             mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);

   179             mv.visitVarInsn(ALOAD, 2);

   180             mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Error", "printStackTrace", "()V", false);

   181             mv.visitLabel(l5);

   182             mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);

   183             mv.visitIincInsn(1, 1);

   184             mv.visitJumpInsn(GOTO, l3);

   185             mv.visitLabel(l4);

   186             mv.visitFrame(Opcodes.F_CHOP,1, null, 0, null);

   187             mv.visitInsn(RETURN);

   188             mv.visitMaxs(2, 3);

   189             mv.visitEnd();

   190         }

   191         cw.visitEnd();

   192 

   193         try(FileOutputStream fos = new FileOutputStream(new File("TestC.class"))) {

   194             fos.write(cw.toByteArray());

   195         }

   196         return cw.toByteArray();

   197     }

   198 }