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test/tools/javac/T8024039/NoDeadCodeGenerationOnTrySmtTest.java@2eb010b6cb22 (annotated)

test/tools/javac/T8024039/NoDeadCodeGenerationOnTrySmtTest.java

Thu, 31 Aug 2017 15:17:03 +0800

author

aoqi

date

Thu, 31 Aug 2017 15:17:03 +0800

changeset 2525

2eb010b6cb22

parent 2034

ac6ec071c2b2

parent 0

959103a6100f

permissions

-rw-r--r--

merge

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 8024039
aoqi@0	29	* @summary javac, previous solution for JDK-8022186 was incorrect
aoqi@0	30	* @library /tools/javac/lib
aoqi@0	31	* @build ToolBox
aoqi@0	32	* @run main NoDeadCodeGenerationOnTrySmtTest
aoqi@0	33	*/
aoqi@0	34
aoqi@0	35	import java.io.File;
aoqi@0	36	import java.nio.file.Paths;
aoqi@0	37
aoqi@0	38	import com.sun.tools.classfile.ClassFile;
aoqi@0	39	import com.sun.tools.classfile.Code_attribute;
aoqi@0	40	import com.sun.tools.classfile.Code_attribute.Exception_data;
aoqi@0	41	import com.sun.tools.classfile.Method;
aoqi@0	42	import com.sun.tools.javac.util.Assert;
aoqi@0	43
aoqi@0	44	public class NoDeadCodeGenerationOnTrySmtTest {
aoqi@0	45
aoqi@0	46	static final String testSource =
aoqi@0	47	"public class Test {\n" +
aoqi@0	48	" void m1(int arg) {\n" +
aoqi@0	49	" synchronized (new Integer(arg)) {\n" +
aoqi@0	50	" {\n" +
aoqi@0	51	" label0:\n" +
aoqi@0	52	" do {\n" +
aoqi@0	53	" break label0;\n" +
aoqi@0	54	" } while (arg != 0);\n" +
aoqi@0	55	" }\n" +
aoqi@0	56	" }\n" +
aoqi@0	57	" }\n" +
aoqi@0	58
aoqi@0	59	" void m2(int arg) {\n" +
aoqi@0	60	" synchronized (new Integer(arg)) {\n" +
aoqi@0	61	" {\n" +
aoqi@0	62	" label0:\n" +
aoqi@0	63	" {\n" +
aoqi@0	64	" break label0;\n" +
aoqi@0	65	" }\n" +
aoqi@0	66	" }\n" +
aoqi@0	67	" }\n" +
aoqi@0	68	" }\n" +
aoqi@0	69	"}";
aoqi@0	70
aoqi@0	71	static final int[][] expectedExceptionTable = {
aoqi@0	72	// {from, to, target, type},
aoqi@0	73	{11, 13, 16, 0},
aoqi@0	74	{16, 19, 16, 0}
aoqi@0	75	};
aoqi@0	76
aoqi@0	77	static final String[] methodsToLookFor = {"m1", "m2"};
aoqi@0	78
aoqi@0	79	public static void main(String[] args) throws Exception {
aoqi@0	80	new NoDeadCodeGenerationOnTrySmtTest().run();
aoqi@0	81	}
aoqi@0	82
aoqi@0	83	void run() throws Exception {
aoqi@0	84	compileTestClass();
aoqi@0	85	checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
aoqi@0	86	"Test.class").toUri()), methodsToLookFor);
aoqi@0	87	}
aoqi@0	88
aoqi@0	89	void compileTestClass() throws Exception {
aoqi@0	90	ToolBox.JavaToolArgs javacSuccessArgs =
aoqi@0	91	new ToolBox.JavaToolArgs().setSources(testSource);
aoqi@0	92	ToolBox.javac(javacSuccessArgs);
aoqi@0	93	}
aoqi@0	94
aoqi@0	95	void checkClassFile(final File cfile, String[] methodsToFind) throws Exception {
aoqi@0	96	ClassFile classFile = ClassFile.read(cfile);
aoqi@0	97	int numberOfmethodsFound = 0;
aoqi@0	98	for (String methodToFind : methodsToFind) {
aoqi@0	99	for (Method method : classFile.methods) {
aoqi@0	100	if (method.getName(classFile.constant_pool).equals(methodToFind)) {
aoqi@0	101	numberOfmethodsFound++;
aoqi@0	102	Code_attribute code = (Code_attribute) method.attributes.get("Code");
aoqi@0	103	Assert.check(code.exception_table_length == expectedExceptionTable.length,
aoqi@0	104	"The ExceptionTable found has a length different to the expected one");
aoqi@0	105	int i = 0;
aoqi@0	106	for (Exception_data entry: code.exception_table) {
aoqi@0	107	Assert.check(entry.start_pc == expectedExceptionTable[i][0] &&
aoqi@0	108	entry.end_pc == expectedExceptionTable[i][1] &&
aoqi@0	109	entry.handler_pc == expectedExceptionTable[i][2] &&
aoqi@0	110	entry.catch_type == expectedExceptionTable[i][3],
aoqi@0	111	"Exception table entry at pos " + i + " differ from expected.");
aoqi@0	112	i++;
aoqi@0	113	}
aoqi@0	114	}
aoqi@0	115	}
aoqi@0	116	}
aoqi@0	117	Assert.check(numberOfmethodsFound == 2, "Some seek methods were not found");
aoqi@0	118	}
aoqi@0	119
aoqi@0	120	void error(String msg) {
aoqi@0	121	throw new AssertionError(msg);
aoqi@0	122	}
aoqi@0	123
aoqi@0	124	}