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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 *

 * 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).

 *

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 * 2 along with this work; if not, write to the Free Software Foundation,

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/*

 * @test

 * @bug 8147039

 * @summary Confirm locals[] always has expected length, even for "dead" locals

 * @compile LocalsAndOperands.java

 * @run testng/othervm -Xcomp CountLocalSlots

 */

import org.testng.annotations.Test;

import java.lang.StackWalker.StackFrame;

public class CountLocalSlots {

    final static boolean debug = true;

    @Test(dataProvider = "provider", dataProviderClass = LocalsAndOperands.class)

    public void countLocalSlots(StackFrame... frames) {

        for (StackFrame frame : frames) {

            if (debug) {

                System.out.println("Running countLocalSlots");

                LocalsAndOperands.dumpStackWithLocals(frames);

            }

            // Confirm expected number of locals

            String methodName = frame.getMethodName();

            Integer expectedObj = (Integer) LocalsAndOperands.Tester.NUM_LOCALS.get(methodName);

            if (expectedObj == null) {

                if (!debug) { LocalsAndOperands.dumpStackWithLocals(frames); }

                throw new RuntimeException("No NUM_LOCALS entry for " +

                        methodName + "().  Update test?");

            }

            Object[] locals = (Object[]) LocalsAndOperands.invokeGetLocals(frame);

            if (locals.length != expectedObj) {

                if (!debug) { LocalsAndOperands.dumpStackWithLocals(frames); }

                throw new RuntimeException(methodName + "(): number of locals (" +

                        locals.length + ") did not match expected (" + expectedObj + ")");

            }

        }

    }

}