test/tools/javac/BadOptimization/Switch2.java

Tue, 28 Dec 2010 15:54:52 -0800

author
ohair
date
Tue, 28 Dec 2010 15:54:52 -0800
changeset 798
4868a36f6fd8
parent 554
9d9f26857129
child 2525
2eb010b6cb22
permissions
-rw-r--r--

6962318: Update copyright year
Reviewed-by: xdono

duke@1 1 /*
ohair@554 2 * Copyright (c) 1999, Oracle and/or its affiliates. All rights reserved.
duke@1 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1 4 *
duke@1 5 * This code is free software; you can redistribute it and/or modify it
duke@1 6 * under the terms of the GNU General Public License version 2 only, as
duke@1 7 * published by the Free Software Foundation.
duke@1 8 *
duke@1 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@1 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@1 13 * accompanied this code).
duke@1 14 *
duke@1 15 * You should have received a copy of the GNU General Public License version
duke@1 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@1 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1 18 *
ohair@554 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554 20 * or visit www.oracle.com if you need additional information or have any
ohair@554 21 * questions.
duke@1 22 */
duke@1 23
duke@1 24 /*
duke@1 25 * @test
duke@1 26 * @bug 4099995 4118025
duke@1 27 * @summary Bad optimization of "switch" statement
duke@1 28 * @author dps
duke@1 29 *
duke@1 30 * @run clean Switch2
duke@1 31 * @run compile -O Switch2.java
duke@1 32 * @run main Switch2
duke@1 33 */
duke@1 34
duke@1 35 public class Switch2
duke@1 36 {
duke@1 37 private boolean isZero( int d ) {
duke@1 38 switch (d) {
duke@1 39 case 0:
duke@1 40 return true;
duke@1 41 default:
duke@1 42 return false;
duke@1 43 }
duke@1 44 }
duke@1 45
duke@1 46 void useSecondArgument( String a, int b ) {
duke@1 47 if ( !isZero( b ) )
duke@1 48 throw new RuntimeException("isZero(0) returns false?!");
duke@1 49 }
duke@1 50
duke@1 51 public static void main( String[] args ) {
duke@1 52 Switch2 object = new Switch2();
duke@1 53 object.useSecondArgument( "42", 0 );
duke@1 54 }
duke@1 55 }

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