1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javap/T6622260.java Tue Jun 03 13:26:47 2008 -0700
1.3 @@ -0,0 +1,197 @@
1.4 +/*
1.5 + * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + */
1.26 +
1.27 +/*
1.28 + * @test
1.29 + * @bug 6622260
1.30 + * @summary javap prints negative bytes incorrectly in hex
1.31 + */
1.32 +
1.33 +import java.io.*;
1.34 +
1.35 +public class T6622260 {
1.36 + public static void main(String[] args) throws Exception {
1.37 + new T6622260().run();
1.38 + }
1.39 +
1.40 + public void run() throws IOException {
1.41 + File javaFile = writeTestFile();
1.42 + File classFile = compileTestFile(javaFile);
1.43 + modifyClassFile(classFile);
1.44 + String output = javap(classFile);
1.45 + verify(output);
1.46 + }
1.47 +
1.48 + File writeTestFile() throws IOException {
1.49 + File f = new File("Test.java");
1.50 + PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(f)));
1.51 + out.println("@Deprecated class Test { int f; void m() { } }");
1.52 + out.close();
1.53 + return f;
1.54 + }
1.55 +
1.56 + File compileTestFile(File f) {
1.57 + int rc = com.sun.tools.javac.Main.compile(new String[] { f.getPath() });
1.58 + if (rc != 0)
1.59 + throw new Error("compilation failed. rc=" + rc);
1.60 + String path = f.getPath();
1.61 + return new File(path.substring(0, path.length() - 5) + ".class");
1.62 + }
1.63 +
1.64 + void modifyClassFile(File f) throws IOException {
1.65 + String newAttributeName = "NonstandardAttribute";
1.66 + byte[] newAttributeData = { 0, 1, 2, 127, (byte)128, (byte)129, (byte)254, (byte)255 };
1.67 +
1.68 + DataInputStream in = new DataInputStream(new FileInputStream(f));
1.69 + byte[] data = new byte[(int) f.length()];
1.70 + in.readFully(data);
1.71 + in.close();
1.72 +
1.73 + in = new DataInputStream(new ByteArrayInputStream(data));
1.74 + in.skipBytes(4); // magic
1.75 + in.skipBytes(2); // minor
1.76 + in.skipBytes(2); // minor
1.77 +
1.78 + int constantPoolPos = data.length - in.available();
1.79 + int constant_pool_count = skipConstantPool(in);
1.80 +
1.81 + int flagsPos = data.length - in.available();
1.82 + in.skipBytes(2); // access_flags
1.83 + in.skipBytes(2); // this_class
1.84 + in.skipBytes(2); // super_class
1.85 +
1.86 + int interfaces_count = in.readUnsignedShort();
1.87 + in.skipBytes(interfaces_count * 2);
1.88 +
1.89 + int field_count = in.readUnsignedShort();
1.90 + for (int i = 0; i < field_count; i++) {
1.91 + in.skipBytes(6); // access_flags, name_index, descriptor_index
1.92 + skipAttributes(in);
1.93 + }
1.94 +
1.95 + int method_count = in.readUnsignedShort();
1.96 + for (int i = 0; i < method_count; i++) {
1.97 + in.skipBytes(6); // access_flags, name_index, descriptor_index
1.98 + skipAttributes(in);
1.99 + }
1.100 +
1.101 + int classAttributesPos = data.length - in.available();
1.102 + int attributes_count = in.readUnsignedShort();
1.103 +
1.104 + f.renameTo(new File(f.getPath() + ".BAK"));
1.105 + DataOutputStream out = new DataOutputStream(new FileOutputStream(f));
1.106 +
1.107 + // copy head
1.108 + out.write(data, 0, constantPoolPos);
1.109 +
1.110 + // copy constant pool, adding in name of new attribute
1.111 + out.writeShort(constant_pool_count + 1);
1.112 + out.write(data, constantPoolPos + 2, flagsPos - constantPoolPos - 2);
1.113 + out.write(1); // CONSTANT_Utf8
1.114 + out.writeUTF(newAttributeName);
1.115 +
1.116 + // copy flags, class, superclass, interfaces, fields and methods
1.117 + out.write(data, flagsPos, classAttributesPos - flagsPos);
1.118 +
1.119 + // copy class attributes, adding in new attribute
1.120 + out.writeShort(attributes_count + 1);
1.121 + out.write(data, classAttributesPos + 2, data.length - classAttributesPos - 2);
1.122 + out.writeShort(constant_pool_count); // index of new attribute name
1.123 + out.writeInt(newAttributeData.length);
1.124 + out.write(newAttributeData);
1.125 + out.close();
1.126 + }
1.127 +
1.128 + int skipConstantPool(DataInputStream in) throws IOException {
1.129 + int constant_pool_count = in.readUnsignedShort();
1.130 + for (int i = 1; i < constant_pool_count; i++) {
1.131 + int tag = in.readUnsignedByte();
1.132 + switch (tag) {
1.133 + case 1: // CONSTANT_Utf8
1.134 + int length = in.readUnsignedShort();
1.135 + in.skipBytes(length); // bytes
1.136 + break;
1.137 +
1.138 + case 3: // CONSTANT_Integer
1.139 + case 4: // CONSTANT_Float
1.140 + in.skipBytes(4); // bytes
1.141 + break;
1.142 +
1.143 + case 5: // CONSTANT_Long
1.144 + case 6: // CONSTANT_Double
1.145 + in.skipBytes(8); // high_bytes, low_bytes
1.146 + break;
1.147 +
1.148 + case 7: // CONSTANT_Class
1.149 + in.skipBytes(2); // name_index
1.150 + break;
1.151 +
1.152 + case 8: // CONSTANT_String
1.153 + in.skipBytes(2); // string_index
1.154 + break;
1.155 +
1.156 + case 9: // CONSTANT_FieldRef
1.157 + case 10: // CONSTANT_Methodref
1.158 + case 11: // CONSTANT_InterfaceMethodref
1.159 + in.skipBytes(4); // class_index, name_and_type_index
1.160 + break;
1.161 +
1.162 + case 12: // CONSTANT_NameAndType
1.163 + in.skipBytes(4); // name_index, descriptor_index
1.164 + break;
1.165 +
1.166 + default:
1.167 + throw new Error("constant pool tag: " + tag);
1.168 + }
1.169 + }
1.170 + return constant_pool_count;
1.171 + }
1.172 +
1.173 + int skipAttributes(DataInputStream in) throws IOException {
1.174 + int attributes_count = in.readUnsignedShort();
1.175 + for (int i = 0; i < attributes_count; i++) {
1.176 + in.skipBytes(2); // attribute_name_index;
1.177 + int length = in.readInt();
1.178 + in.skipBytes(length); // info
1.179 + }
1.180 + return attributes_count;
1.181 + }
1.182 +
1.183 + String javap(File f) {
1.184 + StringWriter sw = new StringWriter();
1.185 + PrintWriter out = new PrintWriter(sw);
1.186 + int rc = com.sun.tools.javap.Main.run(new String[] { "-v", f.getPath() }, out);
1.187 + if (rc != 0)
1.188 + throw new Error("javap failed. rc=" + rc);
1.189 + out.close();
1.190 + return sw.toString();
1.191 + }
1.192 +
1.193 + void verify(String output) {
1.194 + System.out.println(output);
1.195 + if (output.indexOf("-") >= 0)
1.196 + throw new Error("- found in output");
1.197 + if (output.indexOf("FFFFFF") >= 0)
1.198 + throw new Error("FFFFFF found in output");
1.199 + }
1.200 +}
