/*

 * Copyright (c) 2016 Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 * questions.

 */

/*

 * @test

 * @bug 8147039

 * @summary Test for -Xcomp crash that happened before 8147039 fix

 * @run testng/othervm -Xcomp LocalsCrash

 */

import org.testng.annotations.*;

import java.lang.reflect.*;

import java.util.List;

import java.util.stream.Collectors;

public class LocalsCrash {

    static Class<?> liveStackFrameClass;

    static Method getStackWalker;

    static {

        try {

            liveStackFrameClass = Class.forName("java.lang.LiveStackFrame");

            getStackWalker = liveStackFrameClass.getMethod("getStackWalker");

            getStackWalker.setAccessible(true);

        } catch (Throwable t) { throw new RuntimeException(t); }

    }

    private StackWalker walker;

    LocalsCrash() {

        try {

            walker = (StackWalker) getStackWalker.invoke(null);

        } catch (Exception e) { throw new RuntimeException(e); }

    }

    @Test

    public void test00() { doStackWalk(); }

    @Test

    public void test01() { doStackWalk(); }

    private synchronized List<StackWalker.StackFrame> doStackWalk() {

        try {

            // Unused local variables will become dead

            int x = 10;

            char c = 'z';

            String hi = "himom";

            long l = 1000000L;

            double d =  3.1415926;

            return walker.walk(s -> s.collect(Collectors.toList()));

        } catch (Exception e) { throw new RuntimeException(e); }

    }

}