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test/tools/javac/T8011181/EmptyUTF8ForInnerClassNameTest.java@7909abb85562 (annotated)

test/tools/javac/T8011181/EmptyUTF8ForInnerClassNameTest.java

Wed, 14 Nov 2018 10:18:25 -0800

author

diazhou

date

Wed, 14 Nov 2018 10:18:25 -0800

changeset 3762

7909abb85562

parent 0

959103a6100f

permissions

-rw-r--r--

Added tag jdk8u201-b04 for changeset a7f48b9dfb82

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation. Oracle designates this
aoqi@0	8	* particular file as subject to the "Classpath" exception as provided
aoqi@0	9	* by Oracle in the LICENSE file that accompanied this code.
aoqi@0	10	*
aoqi@0	11	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	14	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	15	* accompanied this code).
aoqi@0	16	*
aoqi@0	17	* You should have received a copy of the GNU General Public License version
aoqi@0	18	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	19	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	20	*
aoqi@0	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	22	* or visit www.oracle.com if you need additional information or have any
aoqi@0	23	* questions.
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	/*
aoqi@0	27	* @test
aoqi@0	28	* @bug 8011181
aoqi@0	29	* @summary javac, empty UTF8 entry generated for inner class
aoqi@0	30	*/
aoqi@0	31
aoqi@0	32	import java.io.BufferedInputStream;
aoqi@0	33	import java.nio.file.Files;
aoqi@0	34	import java.nio.file.Path;
aoqi@0	35	import java.nio.file.Paths;
aoqi@0	36
aoqi@0	37	import com.sun.tools.javac.util.Assert;
aoqi@0	38	import com.sun.tools.classfile.ClassFile;
aoqi@0	39
aoqi@0	40	import static com.sun.tools.classfile.ConstantPool.CONSTANT_Utf8;
aoqi@0	41	import static com.sun.tools.classfile.ConstantPool.CONSTANT_Utf8_info;
aoqi@0	42	import static com.sun.tools.classfile.ConstantPool.CPInfo;
aoqi@0	43
aoqi@0	44	public class EmptyUTF8ForInnerClassNameTest {
aoqi@0	45
aoqi@0	46	public static void main(String[] args) throws Exception {
aoqi@0	47	new EmptyUTF8ForInnerClassNameTest().run();
aoqi@0	48	}
aoqi@0	49
aoqi@0	50	void run() throws Exception {
aoqi@0	51	checkClassFile(Paths.get(System.getProperty("test.classes"),
aoqi@0	52	this.getClass().getName() + "$1.class"));
aoqi@0	53	checkClassFile(Paths.get(System.getProperty("test.classes"),
aoqi@0	54	this.getClass().getName() + "$EnumPlusSwitch.class"));
aoqi@0	55	}
aoqi@0	56
aoqi@0	57	void checkClassFile(final Path path) throws Exception {
aoqi@0	58	ClassFile classFile = ClassFile.read(
aoqi@0	59	new BufferedInputStream(Files.newInputStream(path)));
aoqi@0	60	for (CPInfo cpInfo : classFile.constant_pool.entries()) {
aoqi@0	61	if (cpInfo.getTag() == CONSTANT_Utf8) {
aoqi@0	62	CONSTANT_Utf8_info utf8Info = (CONSTANT_Utf8_info)cpInfo;
aoqi@0	63	Assert.check(utf8Info.value.length() > 0,
aoqi@0	64	"UTF8 with length 0 found at class " + classFile.getName());
aoqi@0	65	}
aoqi@0	66	}
aoqi@0	67	}
aoqi@0	68
aoqi@0	69	static class EnumPlusSwitch {
aoqi@0	70	enum E {E1}
aoqi@0	71
aoqi@0	72	public int m (E e) {
aoqi@0	73	switch (e) {
aoqi@0	74	case E1:
aoqi@0	75	return 0;
aoqi@0	76	}
aoqi@0	77	return -1;
aoqi@0	78	}
aoqi@0	79	}
aoqi@0	80
aoqi@0	81	}