author | hseigel |
Mon, 23 Oct 2017 10:42:26 -0400 | |
changeset 47684 | c3c04b6e14f8 |
permissions | -rw-r--r-- |
47684
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/* |
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* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/* |
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* @test |
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* @bug 8174954 |
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* @library /test/lib |
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* @modules java.base/jdk.internal.org.objectweb.asm |
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* @compile -XDignore.symbol.file BSMCalledTwice.java |
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* @run main BSMCalledTwice |
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*/ |
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import java.io.File; |
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import java.io.FileOutputStream; |
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import java.util.*; |
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import static jdk.internal.org.objectweb.asm.Opcodes.*; |
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import jdk.internal.org.objectweb.asm.*; |
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import jdk.test.lib.process.ProcessTools; |
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import jdk.test.lib.process.OutputAnalyzer; |
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// BSMCalledTwice generates a class file named "TestC.class" that contains |
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// bytecodes that represent the following program |
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// |
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// public class TestC { |
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// public static void main(java.lang.String[] arg) { |
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// for (int i=0; i < 2; i++) { |
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// try { |
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// String f = "friend"; |
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// |
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// // The "hello " + f in the following statement produces an |
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// // invokedynamic with a BSM of |
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// // StringConcatFactory.java/makeConcatWithConstants. |
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// // The ASM below erroneously puts 2 static arguments, "hello " |
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// // and "goodbye" on the stack for the BSM. Causing a exception to |
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// // be thrown when creatingthe CallSite object. |
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// System.out.println("hello " + f); <--------------- invokedynamic |
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// |
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// } catch (Error e) { |
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// System.out.println("Caught Error:"); |
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// System.out.println(e.getMessage()); |
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// e.printStackTrace(); |
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// } |
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// } |
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// } |
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// } |
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// |
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public class BSMCalledTwice implements Opcodes { |
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static final String classTestCName = "TestC"; |
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public static int count_makeSite(String text) { |
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int count = 0; |
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String text_ptr = text; |
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while (text_ptr.indexOf("makeSite") != -1) { |
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text_ptr = text_ptr.substring(text_ptr.indexOf("makeSite") + 1); |
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count++; |
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} |
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return count; |
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} |
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public static void main(String[] args) throws Exception { |
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ClassLoader cl = new ClassLoader() { |
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public Class<?> loadClass(String name) throws ClassNotFoundException { |
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if (findLoadedClass(name) != null) { |
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return findLoadedClass(name); |
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} |
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if (classTestCName.equals(name)) { |
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byte[] classFile = null; |
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try { |
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classFile = dumpTestC(); |
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} catch (Exception e) { |
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} |
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return defineClass(classTestCName, classFile, 0, classFile.length); |
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} |
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return super.loadClass(name); |
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} |
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}; |
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cl.loadClass(classTestCName); |
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ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, "-cp", ".", classTestCName); |
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OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
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String test_output = output.getOutput(); |
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if (test_output == null) { |
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throw new RuntimeException("Test failed, null test output"); |
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} |
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// "makeSite" is currently listed twice in the exception stacks for each |
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// failing call to the BootstrapMethod. So more that two calls means |
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// that the BootstrapMethod was called more than once. |
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int count = count_makeSite(test_output); |
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if (count < 1 || count > 2) { |
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111 |
throw new RuntimeException("Test failed, bad number of calls to BootstrapMethod"); |
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112 |
} |
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113 |
output.shouldHaveExitValue(0); |
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114 |
} |
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|
115 |
|
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116 |
public static byte[] dumpTestC () throws Exception { |
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117 |
ClassWriter cw = new ClassWriter(0); |
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118 |
FieldVisitor fv; |
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119 |
MethodVisitor mv; |
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120 |
AnnotationVisitor av0; |
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121 |
|
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122 |
cw.visit(53, ACC_PUBLIC + ACC_SUPER, classTestCName, null, "java/lang/Object", null); |
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|
123 |
|
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124 |
cw.visitInnerClass("java/lang/invoke/MethodHandles$Lookup", |
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125 |
"java/lang/invoke/MethodHandles", "Lookup", |
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|
126 |
ACC_PUBLIC + ACC_FINAL + ACC_STATIC); |
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|
127 |
|
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128 |
{ |
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|
129 |
mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); |
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|
130 |
mv.visitCode(); |
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|
131 |
mv.visitVarInsn(ALOAD, 0); |
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|
132 |
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); |
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|
133 |
mv.visitInsn(RETURN); |
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|
134 |
mv.visitMaxs(1, 1); |
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|
135 |
mv.visitEnd(); |
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|
136 |
} |
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137 |
{ |
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|
138 |
mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null); |
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139 |
mv.visitCode(); |
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|
140 |
Label l0 = new Label(); |
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|
141 |
Label l1 = new Label(); |
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142 |
Label l2 = new Label(); |
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|
143 |
mv.visitTryCatchBlock(l0, l1, l2, "java/lang/Error"); |
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|
144 |
mv.visitInsn(ICONST_0); |
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|
145 |
mv.visitVarInsn(ISTORE, 1); |
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|
146 |
Label l3 = new Label(); |
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|
147 |
mv.visitLabel(l3); |
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|
148 |
mv.visitFrame(Opcodes.F_APPEND,1, new Object[] {Opcodes.INTEGER}, 0, null); |
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|
149 |
mv.visitVarInsn(ILOAD, 1); |
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|
150 |
mv.visitInsn(ICONST_2); |
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|
151 |
Label l4 = new Label(); |
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|
152 |
mv.visitJumpInsn(IF_ICMPGE, l4); |
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|
153 |
mv.visitLabel(l0); |
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|
154 |
mv.visitLdcInsn("friend"); |
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|
155 |
mv.visitVarInsn(ASTORE, 2); |
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|
156 |
mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); |
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|
157 |
mv.visitVarInsn(ALOAD, 2); |
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|
158 |
mv.visitInvokeDynamicInsn("makeConcatWithConstants", |
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|
159 |
"(Ljava/lang/String;)Ljava/lang/String;", |
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|
160 |
new Handle(Opcodes.H_INVOKESTATIC, |
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|
161 |
"java/lang/invoke/StringConcatFactory", |
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|
162 |
"makeConcatWithConstants", |
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|
163 |
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/invoke/CallSite;"), |
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|
164 |
new Object[]{"hello \u0001", "goodbye"}); |
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|
165 |
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false); |
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|
166 |
mv.visitLabel(l1); |
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|
167 |
Label l5 = new Label(); |
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|
168 |
mv.visitJumpInsn(GOTO, l5); |
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|
169 |
mv.visitLabel(l2); |
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|
170 |
mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] {"java/lang/Error"}); |
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|
171 |
mv.visitVarInsn(ASTORE, 2); |
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|
172 |
mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); |
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|
173 |
mv.visitLdcInsn("Caught Error:"); |
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|
174 |
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false); |
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|
175 |
mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); |
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|
176 |
mv.visitVarInsn(ALOAD, 2); |
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|
177 |
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Error", "getMessage", "()Ljava/lang/String;", false); |
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|
178 |
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false); |
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|
179 |
mv.visitVarInsn(ALOAD, 2); |
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|
180 |
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Error", "printStackTrace", "()V", false); |
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|
181 |
mv.visitLabel(l5); |
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|
182 |
mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); |
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|
183 |
mv.visitIincInsn(1, 1); |
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|
184 |
mv.visitJumpInsn(GOTO, l3); |
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|
185 |
mv.visitLabel(l4); |
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|
186 |
mv.visitFrame(Opcodes.F_CHOP,1, null, 0, null); |
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|
187 |
mv.visitInsn(RETURN); |
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|
188 |
mv.visitMaxs(2, 3); |
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|
189 |
mv.visitEnd(); |
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|
190 |
} |
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|
191 |
cw.visitEnd(); |
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changeset
|
192 |
|
c3c04b6e14f8
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|
193 |
try(FileOutputStream fos = new FileOutputStream(new File("TestC.class"))) { |
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|
194 |
fos.write(cw.toByteArray()); |
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|
195 |
} |
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|
196 |
return cw.toByteArray(); |
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|
197 |
} |
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|
198 |
} |