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test/tools/javac/lambda/LambdaTestStrictFPFlag.java@93012e2a5d1d (annotated)

test/tools/javac/lambda/LambdaTestStrictFPFlag.java

Sat, 07 Nov 2020 10:30:02 +0800

author

aoqi

date

Sat, 07 Nov 2020 10:30:02 +0800

changeset 3938

93012e2a5d1d

parent 2528

eb284abd64fe

permissions

-rw-r--r--

Added tag mips-jdk8u275-b01 for changeset eb6ee6a5f2fe

rfield@2528	1	/*
rfield@2528	2	* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
rfield@2528	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
rfield@2528	4	*
rfield@2528	5	* This code is free software; you can redistribute it and/or modify it
rfield@2528	6	* under the terms of the GNU General Public License version 2 only, as
rfield@2528	7	* published by the Free Software Foundation.
rfield@2528	8	*
rfield@2528	9	* This code is distributed in the hope that it will be useful, but WITHOUT
rfield@2528	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
rfield@2528	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
rfield@2528	12	* version 2 for more details (a copy is included in the LICENSE file that
rfield@2528	13	* accompanied this code).
rfield@2528	14	*
rfield@2528	15	* You should have received a copy of the GNU General Public License version
rfield@2528	16	* 2 along with this work; if not, write to the Free Software Foundation,
rfield@2528	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
rfield@2528	18	*
rfield@2528	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
rfield@2528	20	* or visit www.oracle.com if you need additional information or have any
rfield@2528	21	* questions.
rfield@2528	22	*/
rfield@2528	23
rfield@2528	24	/*
rfield@2528	25	* @test
rfield@2528	26	* @bug 8046060
rfield@2528	27	* @summary Different results of floating point multiplication for lambda code block
rfield@2528	28	*/
rfield@2528	29
rfield@2528	30	import java.io.*;
rfield@2528	31	import java.net.URL;
rfield@2528	32	import com.sun.tools.classfile.*;
rfield@2528	33	import static com.sun.tools.classfile.AccessFlags.ACC_STRICT;
rfield@2528	34
rfield@2528	35	public class LambdaTestStrictFPFlag {
rfield@2528	36	public static void main(String[] args) throws Exception {
rfield@2528	37	new LambdaTestStrictFPFlag().run();
rfield@2528	38	}
rfield@2528	39
rfield@2528	40	void run() throws Exception {
rfield@2528	41	ClassFile cf = getClassFile("LambdaTestStrictFPFlag$Test.class");
rfield@2528	42	ConstantPool cp = cf.constant_pool;
rfield@2528	43	boolean found = false;
rfield@2528	44	for (Method meth: cf.methods) {
rfield@2528	45	if (meth.getName(cp).startsWith("lambda$")) {
rfield@2528	46	if ((meth.access_flags.flags & ACC_STRICT) == 0) {
rfield@2528	47	throw new Exception("strict flag missing from lambda");
rfield@2528	48	}
rfield@2528	49	found = true;
rfield@2528	50	}
rfield@2528	51	}
rfield@2528	52	if (!found) {
rfield@2528	53	throw new Exception("did not find lambda method");
rfield@2528	54	}
rfield@2528	55	}
rfield@2528	56
rfield@2528	57	ClassFile getClassFile(String name) throws IOException, ConstantPoolException {
rfield@2528	58	URL url = getClass().getResource(name);
rfield@2528	59	InputStream in = url.openStream();
rfield@2528	60	try {
rfield@2528	61	return ClassFile.read(in);
rfield@2528	62	} finally {
rfield@2528	63	in.close();
rfield@2528	64	}
rfield@2528	65	}
rfield@2528	66
rfield@2528	67	class Test {
rfield@2528	68	strictfp void test() {
rfield@2528	69	Face itf = () -> { };
rfield@2528	70	}
rfield@2528	71	}
rfield@2528	72
rfield@2528	73	interface Face {
rfield@2528	74	void m();
rfield@2528	75	}
rfield@2528	76	}