Mercurial > hg > truffle
view test/compiler/6778657/Test.java @ 968:5fdbe2cdf565
6879689: Fix warning about ignored return value when compiling with -O2
Summary: Store the return value of fwrite and check it matches the size of the array.
Reviewed-by: twisti, dholmes
author | andrew |
---|---|
date | Tue, 08 Sep 2009 09:01:16 +0100 |
parents | 0fbdb4381b99 |
children | c18cbe5936b8 |
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/* * Copyright 2008-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ /* * @test * @bug 6778657 * @summary Casts in SharedRuntime::f2i, f2l, d2i and d2l rely on undefined C++ behaviour */ public class Test { public static void check_f2i(int expect) { float check = expect; check *= 2; int actual = (int) check; if (actual != expect) throw new RuntimeException("expecting " + expect + ", got " + actual); } public static void check_f2l(long expect) { float check = expect; check *= 2; long actual = (long) check; if (actual != expect) throw new RuntimeException("expecting " + expect + ", got " + actual); } public static void check_d2i(int expect) { double check = expect; check *= 2; int actual = (int) check; if (actual != expect) throw new RuntimeException("expecting " + expect + ", got " + actual); } public static void check_d2l(long expect) { double check = expect; check *= 2; long actual = (long) check; if (actual != expect) throw new RuntimeException("expecting " + expect + ", got " + actual); } public static void main(String[] args) { check_f2i(Integer.MAX_VALUE); check_f2i(Integer.MIN_VALUE); check_f2l(Long.MAX_VALUE); check_f2l(Long.MIN_VALUE); check_d2i(Integer.MAX_VALUE); check_d2i(Integer.MIN_VALUE); check_d2l(Long.MAX_VALUE); check_d2l(Long.MIN_VALUE); } }