131 lines
4.9 KiB
Java
131 lines
4.9 KiB
Java
/*
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* Copyright (c) 2007, 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 6547378
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* @summary Verify that methods with max_stack==0 don't have exception handlers
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* @author Keith McGuigan
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*/
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public class VerifyStackForExceptionHandlers extends ClassLoader {
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public static void main(String argv[]) throws Exception {
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VerifyStackForExceptionHandlers t =
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new VerifyStackForExceptionHandlers();
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try {
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t.loadGoodClass();
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} catch(VerifyError e) {
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throw new Exception("FAIL: should be no VerifyError for class A");
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}
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try {
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t.loadBadClass();
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throw new Exception("FAIL: should be a VerifyError for class B");
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} catch(VerifyError e) {
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System.out.println("PASS");
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}
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}
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private void loadGoodClass() {
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/* -- code for class A --
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public class A {
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public static void f() {}
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}
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*/
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long[] cls_data = {
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0xcafebabe00000031L, 0x000e0a0003000b07L,
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0x000c07000d010006L, 0x3c696e69743e0100L,
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0x0328295601000443L, 0x6f646501000f4c69L,
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0x6e654e756d626572L, 0x5461626c65010001L,
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0x6601000a536f7572L, 0x636546696c650100L,
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0x06412e6a6176610cL, 0x0004000501000141L,
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0x0100106a6176612fL, 0x6c616e672f4f626aL,
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0x6563740021000200L, 0x0300000000000200L,
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0x0100040005000100L, 0x060000001d000100L,
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0x01000000052ab700L, 0x01b1000000010007L,
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0x0000000600010000L, 0x0001000900080005L,
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0x0001000600000019L, 0x0000000000000001L,
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0xb100000001000700L, 0x0000060001000000L,
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0x0200010009000000L, 0x02000a0000000000L
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};
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final int EXTRA = 5;
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byte cf_bytes[] = toByteArray(cls_data);
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Class c = defineClass("A", cf_bytes, 0, cf_bytes.length - EXTRA);
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try { c.newInstance(); } // to force linking, thus verification
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catch(InstantiationException e) {}
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catch(IllegalAccessException e) {}
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}
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private void loadBadClass() throws VerifyError {
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/* -- code for class B --
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public class B {
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public static void g() {}
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public static void f() {
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// bytecode modified to have a max_stack value of 0
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try { g(); }
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catch (NullPointerException e) {}
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}
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}
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*/
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long[] cls_data = {
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0xcafebabe00000031L, 0x00120a000400060aL,
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0x000d00030c000f00L, 0x0a0700050100106aL,
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0x6176612f6c616e67L, 0x2f4f626a6563740cL,
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0x0011000a01000a53L, 0x6f7572636546696cL,
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0x6507000901001e6aL, 0x6176612f6c616e67L,
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0x2f4e756c6c506f69L, 0x6e74657245786365L,
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0x7074696f6e010003L, 0x282956010006422eL,
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0x6a61736d01000443L, 0x6f646507000e0100L,
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0x0142010001670100L, 0x01660100063c696eL,
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0x69743e0021000d00L, 0x0400000000000300L,
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0x010011000a000100L, 0x0c00000011000100L,
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0x01000000052ab700L, 0x01b1000000000009L,
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0x000f000a0001000cL, 0x0000000d00000000L,
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0x00000001b1000000L, 0x0000090010000a00L,
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0x01000c0000001c00L, 0x00000100000008b8L,
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0x0002a700044bb100L, 0x0100000003000600L,
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0x0800000001000700L, 0x000002000b000000L // 3 bytes extra
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};
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final int EXTRA = 3;
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byte cf_bytes[] = toByteArray(cls_data);
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Class c = defineClass("B", cf_bytes, 0, cf_bytes.length - EXTRA);
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try { c.newInstance(); } // to force linking, thus verification
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catch(InstantiationException e) {}
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catch(IllegalAccessException e) {}
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}
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static private byte[] toByteArray(long arr[]) {
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// convert long array to byte array
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java.nio.ByteBuffer bbuf = java.nio.ByteBuffer.allocate(arr.length * 8);
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bbuf.asLongBuffer().put(java.nio.LongBuffer.wrap(arr));
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return bbuf.array();
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}
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}
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