jdk8-mips64-public/langtools: test/tools/javac/BadOptimization/DeadCode3.java@4868a36f6fd8

     1 /*

     2  * Copyright (c) 1999, 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  */

    24 /*

    25  * @test

    26  * @bug 4057345 4120016 4120014

    27  * @summary final void function:  Verify that overzealous dead-code elimination

    28  * no longer removes live code.

    29  * @author dps

    30  *

    31  * @run clean DeadCode3

    32  * @run compile -O DeadCode3.java

    33  * @run main DeadCode3

    34  */

    36 public class DeadCode3

    37 {

    38     private final void fun1() { }

    40     private void fun2() {

    41         DeadCode3 r1 = null;

    42         fun1();

    44         // we expect an NullPointerException because of this line

    45         r1.fun1();

    46     }

    48     public static void main( String[] args ) {

    49         try {

    50             new DeadCode3() . fun2();

    51             // if we got past the constructor, then there must be a problem

    52             throw new RuntimeException("accidental removal of live code");

    53         } catch (NullPointerException e) {

    54             System.out.println("NullPointerException correctly thrown");

    55             e.printStackTrace();

    56         }

    57     }

    58 }

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