1 /* 2 * Copyright (c) 2014, 2015, 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 */ 23 24 /* 25 * @test 26 * @bug 8046060 27 * @summary Different results of floating point multiplication for lambda code block 28 * @modules jdk.jdeps/com.sun.tools.classfile 29 */ 30 31 import java.io.*; 32 import java.net.URL; 33 import com.sun.tools.classfile.*; 34 import static com.sun.tools.classfile.AccessFlags.ACC_STRICT; 35 36 public class LambdaTestStrictFPFlag { 37 public static void main(String[] args) throws Exception { 38 new LambdaTestStrictFPFlag().run(); 39 } 40 41 void run() throws Exception { 42 ClassFile cf = getClassFile("LambdaTestStrictFPFlag$Test.class"); 43 ConstantPool cp = cf.constant_pool; 44 boolean found = false; 45 for (Method meth: cf.methods) { 46 if (meth.getName(cp).startsWith("lambda$")) { 47 if ((meth.access_flags.flags & ACC_STRICT) == 0) { 48 throw new Exception("strict flag missing from lambda"); 49 } 50 found = true; 51 } 52 } 53 if (!found) { 54 throw new Exception("did not find lambda method"); 55 } 56 } 57 58 ClassFile getClassFile(String name) throws IOException, ConstantPoolException { 59 URL url = getClass().getResource(name); 60 InputStream in = url.openStream(); 61 try { 62 return ClassFile.read(in); 63 } finally { 64 in.close(); 65 } 66 } 67 68 class Test { 69 strictfp void test() { 70 Face itf = () -> { }; 71 } 72 } 73 74 interface Face { 75 void m(); 76 } 77 }