| /* |
| * Copyright (c) 2017, 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 8174954 |
| * @library /test/lib |
| * @modules java.base/jdk.internal.org.objectweb.asm |
| * @compile -XDignore.symbol.file BSMCalledTwice.java |
| * @run main BSMCalledTwice |
| */ |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.util.*; |
| import static jdk.internal.org.objectweb.asm.Opcodes.*; |
| import jdk.internal.org.objectweb.asm.*; |
| import jdk.test.lib.process.ProcessTools; |
| import jdk.test.lib.process.OutputAnalyzer; |
| |
| // BSMCalledTwice generates a class file named "TestC.class" that contains |
| // bytecodes that represent the following program |
| // |
| // public class TestC { |
| // public static void main(java.lang.String[] arg) { |
| // for (int i=0; i < 2; i++) { |
| // try { |
| // String f = "friend"; |
| // |
| // // The "hello " + f in the following statement produces an |
| // // invokedynamic with a BSM of |
| // // StringConcatFactory.java/makeConcatWithConstants. |
| // // The ASM below erroneously puts 2 static arguments, "hello " |
| // // and "goodbye" on the stack for the BSM. Causing a exception to |
| // // be thrown when creatingthe CallSite object. |
| // System.out.println("hello " + f); <--------------- invokedynamic |
| // |
| // } catch (Error e) { |
| // System.out.println("Caught Error:"); |
| // System.out.println(e.getMessage()); |
| // e.printStackTrace(); |
| // } |
| // } |
| // } |
| // } |
| // |
| public class BSMCalledTwice implements Opcodes { |
| static final String classTestCName = "TestC"; |
| |
| public static int count_makeSite(String text) { |
| int count = 0; |
| String text_ptr = text; |
| while (text_ptr.indexOf("makeSite") != -1) { |
| text_ptr = text_ptr.substring(text_ptr.indexOf("makeSite") + 1); |
| count++; |
| } |
| return count; |
| } |
| |
| public static void main(String[] args) throws Exception { |
| ClassLoader cl = new ClassLoader() { |
| public Class<?> loadClass(String name) throws ClassNotFoundException { |
| if (findLoadedClass(name) != null) { |
| return findLoadedClass(name); |
| } |
| |
| if (classTestCName.equals(name)) { |
| byte[] classFile = null; |
| try { |
| classFile = dumpTestC(); |
| } catch (Exception e) { |
| } |
| return defineClass(classTestCName, classFile, 0, classFile.length); |
| } |
| return super.loadClass(name); |
| } |
| }; |
| |
| cl.loadClass(classTestCName); |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, "-cp", ".", classTestCName); |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| String test_output = output.getOutput(); |
| if (test_output == null) { |
| throw new RuntimeException("Test failed, null test output"); |
| } |
| // "makeSite" is currently listed twice in the exception stacks for each |
| // failing call to the BootstrapMethod. So more that two calls means |
| // that the BootstrapMethod was called more than once. |
| int count = count_makeSite(test_output); |
| if (count < 1 || count > 2) { |
| throw new RuntimeException("Test failed, bad number of calls to BootstrapMethod"); |
| } |
| output.shouldHaveExitValue(0); |
| } |
| |
| public static byte[] dumpTestC () throws Exception { |
| ClassWriter cw = new ClassWriter(0); |
| FieldVisitor fv; |
| MethodVisitor mv; |
| AnnotationVisitor av0; |
| |
| cw.visit(53, ACC_PUBLIC + ACC_SUPER, classTestCName, null, "java/lang/Object", null); |
| |
| cw.visitInnerClass("java/lang/invoke/MethodHandles$Lookup", |
| "java/lang/invoke/MethodHandles", "Lookup", |
| ACC_PUBLIC + ACC_FINAL + ACC_STATIC); |
| |
| { |
| mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); |
| mv.visitCode(); |
| mv.visitVarInsn(ALOAD, 0); |
| mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(1, 1); |
| mv.visitEnd(); |
| } |
| { |
| mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null); |
| mv.visitCode(); |
| Label l0 = new Label(); |
| Label l1 = new Label(); |
| Label l2 = new Label(); |
| mv.visitTryCatchBlock(l0, l1, l2, "java/lang/Error"); |
| mv.visitInsn(ICONST_0); |
| mv.visitVarInsn(ISTORE, 1); |
| Label l3 = new Label(); |
| mv.visitLabel(l3); |
| mv.visitFrame(Opcodes.F_APPEND,1, new Object[] {Opcodes.INTEGER}, 0, null); |
| mv.visitVarInsn(ILOAD, 1); |
| mv.visitInsn(ICONST_2); |
| Label l4 = new Label(); |
| mv.visitJumpInsn(IF_ICMPGE, l4); |
| mv.visitLabel(l0); |
| mv.visitLdcInsn("friend"); |
| mv.visitVarInsn(ASTORE, 2); |
| mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); |
| mv.visitVarInsn(ALOAD, 2); |
| mv.visitInvokeDynamicInsn("makeConcatWithConstants", |
| "(Ljava/lang/String;)Ljava/lang/String;", |
| new Handle(Opcodes.H_INVOKESTATIC, |
| "java/lang/invoke/StringConcatFactory", |
| "makeConcatWithConstants", |
| "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/invoke/CallSite;"), |
| new Object[]{"hello \u0001", "goodbye"}); |
| mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false); |
| mv.visitLabel(l1); |
| Label l5 = new Label(); |
| mv.visitJumpInsn(GOTO, l5); |
| mv.visitLabel(l2); |
| mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] {"java/lang/Error"}); |
| mv.visitVarInsn(ASTORE, 2); |
| mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); |
| mv.visitLdcInsn("Caught Error:"); |
| mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false); |
| mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); |
| mv.visitVarInsn(ALOAD, 2); |
| mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Error", "getMessage", "()Ljava/lang/String;", false); |
| mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false); |
| mv.visitVarInsn(ALOAD, 2); |
| mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Error", "printStackTrace", "()V", false); |
| mv.visitLabel(l5); |
| mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); |
| mv.visitIincInsn(1, 1); |
| mv.visitJumpInsn(GOTO, l3); |
| mv.visitLabel(l4); |
| mv.visitFrame(Opcodes.F_CHOP,1, null, 0, null); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(2, 3); |
| mv.visitEnd(); |
| } |
| cw.visitEnd(); |
| |
| try(FileOutputStream fos = new FileOutputStream(new File("TestC.class"))) { |
| fos.write(cw.toByteArray()); |
| } |
| return cw.toByteArray(); |
| } |
| } |