Mercurial > hg > truffle
annotate test/compiler/jsr292/methodHandleExceptions/ByteClassLoader.java @ 14249:78468e5dc6fc
8031059: invokestatic: ICCE trying to invoke static method when it clashes with an abstract method inherited from an interface
Summary: Do not create AME overpass if there is a matching static method
Reviewed-by: lfoltan, coleenp, kamg
author | hseigel |
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date | Tue, 14 Jan 2014 16:27:35 -0500 |
parents | 9d15b81d5d1b |
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rev | line source |
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1 import java.io.BufferedOutputStream; |
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2 import java.io.FileNotFoundException; |
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3 import java.io.FileOutputStream; |
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4 import java.io.IOException; |
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5 import java.net.URL; |
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6 import java.net.URLClassLoader; |
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7 import java.util.jar.JarEntry; |
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8 import java.util.jar.JarOutputStream; |
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9 |
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10 /* |
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11 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
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12 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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13 * |
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14 * This code is free software; you can redistribute it and/or modify it |
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15 * under the terms of the GNU General Public License version 2 only, as |
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16 * published by the Free Software Foundation. |
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17 * |
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18 * This code is distributed in the hope that it will be useful, but WITHOUT |
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19 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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20 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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21 * version 2 for more details (a copy is included in the LICENSE file that |
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22 * accompanied this code). |
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23 * |
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24 * You should have received a copy of the GNU General Public License version |
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25 * 2 along with this work; if not, write to the Free Software Foundation, |
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26 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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27 * |
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28 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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29 * or visit www.oracle.com if you need additional information or have any |
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30 * questions. |
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31 * |
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32 */ |
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33 |
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34 /** |
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35 * A ByteClassLoader is used to define classes from collections of bytes, as |
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36 * well as loading classes in the usual way. It includes options to write the |
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37 * classes to files in a jar, or to read the classes from jars in a later or |
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38 * debugging run. |
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39 * |
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40 * If Boolean property byteclassloader.verbose is true, be chatty about jar |
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41 * file operations. |
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42 * |
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43 */ |
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44 public class ByteClassLoader extends URLClassLoader { |
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45 |
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46 final static boolean verbose |
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47 = Boolean.getBoolean("byteclassloader.verbose"); |
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48 |
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49 final boolean read; |
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50 final JarOutputStream jos; |
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51 final String jar_name; |
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52 |
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53 /** |
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54 * Make a new ByteClassLoader. |
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55 * |
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56 * @param jar_name Basename of jar file to be read/written by this classloader. |
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57 * @param read If true, read classes from jar file instead of from parameter. |
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58 * @param write If true, write classes to jar files for offline study/use. |
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59 * |
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60 * @throws FileNotFoundException |
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61 * @throws IOException |
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62 */ |
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63 public ByteClassLoader(String jar_name, boolean read, boolean write) |
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64 throws FileNotFoundException, IOException { |
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65 super(read |
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66 ? new URL[]{new URL("file:" + jar_name + ".jar")} |
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67 : new URL[0]); |
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68 this.read = read; |
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69 this.jar_name = jar_name; |
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70 this.jos = write |
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71 ? new JarOutputStream( |
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72 new BufferedOutputStream( |
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73 new FileOutputStream(jar_name + ".jar"))) : null; |
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74 if (read && write) { |
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75 throw new Error("At most one of read and write may be true."); |
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76 } |
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77 } |
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78 |
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79 private static void writeJarredFile(JarOutputStream jos, String file, String suffix, byte[] bytes) { |
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80 String fileName = file.replace(".", "/") + "." + suffix; |
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81 JarEntry ze = new JarEntry(fileName); |
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82 try { |
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83 ze.setSize(bytes.length); |
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84 jos.putNextEntry(ze); |
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85 jos.write(bytes); |
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86 jos.closeEntry(); |
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87 } catch (IOException e) { |
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88 throw new RuntimeException(e); |
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89 } |
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90 } |
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91 |
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92 /** |
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93 * (pre)load class name using classData for the definition. |
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94 * |
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95 * @param name |
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96 * @param classData |
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97 * @return |
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98 */ |
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99 public Class<?> loadBytes(String name, byte[] classData) throws ClassNotFoundException { |
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100 if (jos != null) { |
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101 if (verbose) { |
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102 System.out.println("ByteClassLoader: writing " + name); |
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103 } |
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104 writeJarredFile(jos, name, "class", classData); |
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105 } |
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106 |
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107 Class<?> clazz = null; |
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108 if (read) { |
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109 if (verbose) { |
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110 System.out.println("ByteClassLoader: reading " + name + " from " + jar_name); |
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111 } |
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112 clazz = loadClass(name); |
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113 } else { |
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114 clazz = defineClass(name, classData, 0, classData.length); |
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115 resolveClass(clazz); |
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116 } |
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117 return clazz; |
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118 } |
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119 |
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120 public void close() { |
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121 if (jos != null) { |
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122 try { |
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123 if (verbose) { |
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124 System.out.println("ByteClassLoader: closing " + jar_name); |
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125 } |
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126 jos.close(); |
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127 } catch (IOException ex) { |
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128 } |
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129 } |
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130 } |
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131 } |