Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeNewArray.java @ 271:818a18cd69a8
6730514: assertion failure in mangling code when expanding by 0 bytes
Summary: An expansion by 0 bytes was not anticipated when the assertion was composed.
Reviewed-by: jjh, jcoomes, apetrusenko
author | jmasa |
---|---|
date | Wed, 30 Jul 2008 11:54:00 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2002 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ package sun.jvm.hotspot.interpreter; import sun.jvm.hotspot.oops.*; import sun.jvm.hotspot.utilities.*; public class BytecodeNewArray extends Bytecode { BytecodeNewArray(Method method, int bci) { super(method, bci); } public int getType() { return (int) javaByteAt(1); } public void verify() { if (Assert.ASSERTS_ENABLED) { Assert.that(isValid(), "check newarray"); } } public boolean isValid() { boolean result = javaCode() == Bytecodes._newarray; if (result == false) return false; switch (getType()) { case TypeArrayKlass.T_BOOLEAN: case TypeArrayKlass.T_CHAR: case TypeArrayKlass.T_FLOAT: case TypeArrayKlass.T_DOUBLE: case TypeArrayKlass.T_BYTE: case TypeArrayKlass.T_SHORT: case TypeArrayKlass.T_INT: case TypeArrayKlass.T_LONG: break; default: return false; } return true; } public String getTypeName() { String result; switch (getType()) { case TypeArrayKlass.T_BOOLEAN: result = "boolean"; break; case TypeArrayKlass.T_CHAR: result = "char"; break; case TypeArrayKlass.T_FLOAT: result = "float"; break; case TypeArrayKlass.T_DOUBLE: result = "double"; break; case TypeArrayKlass.T_BYTE: result = "byte"; break; case TypeArrayKlass.T_SHORT: result = "short"; break; case TypeArrayKlass.T_INT: result = "int"; break; case TypeArrayKlass.T_LONG: result = "long"; break; default: // should not happen result = "<invalid>"; break; } return result; } public static BytecodeNewArray at(Method method, int bci) { BytecodeNewArray b = new BytecodeNewArray(method, bci); if (Assert.ASSERTS_ENABLED) { b.verify(); } return b; } /** Like at, but returns null if the BCI is not at newarray */ public static BytecodeNewArray atCheck(Method method, int bci) { BytecodeNewArray b = new BytecodeNewArray(method, bci); return (b.isValid() ? b : null); } public static BytecodeNewArray at(BytecodeStream bcs) { return new BytecodeNewArray(bcs.method(), bcs.bci()); } public String toString() { StringBuffer buf = new StringBuffer(); buf.append("newarray"); buf.append(spaces); buf.append(getTypeName()); return buf.toString(); } }