1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 8147039 27 * @summary Confirm locals[] always has expected length, even for "dead" locals 28 * @compile LocalsAndOperands.java 29 * @run testng/othervm -Xcomp CountLocalSlots 30 */ 31 32 import org.testng.annotations.Test; 33 import java.lang.StackWalker.StackFrame; 34 35 public class CountLocalSlots { 36 final static boolean debug = true; 37 38 @Test(dataProvider = "provider", dataProviderClass = LocalsAndOperands.class) 39 public void countLocalSlots(StackFrame... frames) { 40 for (StackFrame frame : frames) { 41 if (debug) { 42 System.out.println("Running countLocalSlots"); 43 LocalsAndOperands.dumpStackWithLocals(frames); 44 } 45 // Confirm expected number of locals 46 String methodName = frame.getMethodName(); 47 Integer expectedObj = (Integer) LocalsAndOperands.Tester.NUM_LOCALS.get(methodName); 48 if (expectedObj == null) { 49 if (!debug) { LocalsAndOperands.dumpStackWithLocals(frames); } 50 throw new RuntimeException("No NUM_LOCALS entry for " + 51 methodName + "(). Update test?"); 52 } 53 Object[] locals = (Object[]) LocalsAndOperands.invokeGetLocals(frame); 54 if (locals.length != expectedObj) { 55 if (!debug) { LocalsAndOperands.dumpStackWithLocals(frames); } 56 throw new RuntimeException(methodName + "(): number of locals (" + 57 locals.length + ") did not match expected (" + expectedObj + ")"); 58 } 59 } 60 } 61 }