--- /dev/null 2017-05-25 11:08:16.604000221 -0400 +++ new/test/runtime/BootstrapMethod/BSMCalledTwice.java 2017-06-08 09:09:13.642356510 -0400 @@ -0,0 +1,198 @@ +/* + * 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$Lookup", + "java/lang/invoke/MethodHandles", "Lookup", + ACC_PUBLIC + ACC_FINAL + ACC_STATIC); + + { + mv = cw.visitMethod(ACC_PUBLIC, "", "()V", null, null); + mv.visitCode(); + mv.visitVarInsn(ALOAD, 0); + mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "", "()V", false); + mv.visitInsn(RETURN); + mv.visitMaxs(1, 1); + mv.visitEnd(); + } + { + mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null); + mv.visitCode(); + Label l0 = new Label(); + Label l1 = new Label(); + Label l2 = new Label(); + mv.visitTryCatchBlock(l0, l1, l2, "java/lang/Error"); + mv.visitInsn(ICONST_0); + mv.visitVarInsn(ISTORE, 1); + Label l3 = new Label(); + mv.visitLabel(l3); + mv.visitFrame(Opcodes.F_APPEND,1, new Object[] {Opcodes.INTEGER}, 0, null); + mv.visitVarInsn(ILOAD, 1); + mv.visitInsn(ICONST_2); + Label l4 = new Label(); + mv.visitJumpInsn(IF_ICMPGE, l4); + mv.visitLabel(l0); + mv.visitLdcInsn("friend"); + mv.visitVarInsn(ASTORE, 2); + mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); + mv.visitVarInsn(ALOAD, 2); + mv.visitInvokeDynamicInsn("makeConcatWithConstants", + "(Ljava/lang/String;)Ljava/lang/String;", + new Handle(Opcodes.H_INVOKESTATIC, + "java/lang/invoke/StringConcatFactory", + "makeConcatWithConstants", + "(Ljava/lang/invoke/MethodHandles$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(); + } +}