hotspot/test/compiler/6778657/Test.java
author weijun
Tue, 30 Aug 2011 10:46:27 +0800
changeset 10416 61d6ccadbfa2
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permissions -rw-r--r--
7083576: add javax/xml/crypto into jdk_security2 Reviewed-by: mullan
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/*
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 * Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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/*
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 * @test
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 * @bug 6778657
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 * @summary Casts in SharedRuntime::f2i, f2l, d2i and d2l rely on undefined C++ behaviour
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 */
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public class Test {
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  public static void check_f2i(int expect) {
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    float check = expect;
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    check *= 2;
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    int actual = (int) check;
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    if (actual != expect)
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      throw new RuntimeException("expecting " + expect + ", got " + actual);
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  }
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  public static void check_f2l(long expect) {
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    float check = expect;
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    check *= 2;
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    long actual = (long) check;
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    if (actual != expect)
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      throw new RuntimeException("expecting " + expect + ", got " + actual);
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  }
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  public static void check_d2i(int expect) {
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    double check = expect;
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    check *= 2;
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    int actual = (int) check;
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    if (actual != expect)
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      throw new RuntimeException("expecting " + expect + ", got " + actual);
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  }
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  public static void check_d2l(long expect) {
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    double check = expect;
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    check *= 2;
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    long actual = (long) check;
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    if (actual != expect)
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      throw new RuntimeException("expecting " + expect + ", got " + actual);
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  }
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  public static void main(String[] args) {
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    check_f2i(Integer.MAX_VALUE);
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    check_f2i(Integer.MIN_VALUE);
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    check_f2l(Long.MAX_VALUE);
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    check_f2l(Long.MIN_VALUE);
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    check_d2i(Integer.MAX_VALUE);
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    check_d2i(Integer.MIN_VALUE);
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    check_d2l(Long.MAX_VALUE);
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    check_d2l(Long.MIN_VALUE);
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  }
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}
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