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test/tools/javac/T7008643/InlinedFinallyConfuseDebuggersTest.java@08a21473de54 (annotated)

test/tools/javac/T7008643/InlinedFinallyConfuseDebuggersTest.java

Wed, 07 Jun 2017 00:04:12 -0700

author

shshahma

date

Wed, 07 Jun 2017 00:04:12 -0700

changeset 3497

08a21473de54

parent 3371

7220be8747f0

permissions

-rw-r--r--

8180660: missing LNT entry for finally block
Reviewed-by: mcimadamore, vromero
Contributed-by: maurizio.cimadamore@oracle.com, vicente.romero@oracle.com

aoqi@0	1	/*
shshahma@3371	2	* Copyright (c) 2013, 2017, 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.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/*
aoqi@0	25	* @test
aoqi@0	26	* @bug 7008643
aoqi@0	27	* @summary inlined finally clauses confuse debuggers
aoqi@0	28	* @library /tools/javac/lib
aoqi@0	29	* @build ToolBox
aoqi@0	30	* @run main InlinedFinallyConfuseDebuggersTest
aoqi@0	31	*/
aoqi@0	32
aoqi@0	33	import java.io.File;
aoqi@0	34	import java.nio.file.Paths;
aoqi@0	35
aoqi@0	36	import com.sun.tools.classfile.ClassFile;
aoqi@0	37	import com.sun.tools.classfile.Code_attribute;
aoqi@0	38	import com.sun.tools.classfile.LineNumberTable_attribute;
aoqi@0	39	import com.sun.tools.classfile.Method;
aoqi@0	40	import com.sun.tools.javac.util.Assert;
aoqi@0	41
aoqi@0	42	public class InlinedFinallyConfuseDebuggersTest {
aoqi@0	43
aoqi@0	44	static final String testSource =
aoqi@0	45	/* 01 */ "public class InlinedFinallyTest {\n" +
aoqi@0	46	/* 02 */ " void lookForThisMethod(int value) {\n" +
aoqi@0	47	/* 03 */ " try {\n" +
aoqi@0	48	/* 04 */ " if (value > 0) {\n" +
aoqi@0	49	/* 05 */ " System.out.println(\"if\");\n" +
aoqi@0	50	/* 06 */ " return;\n" +
aoqi@0	51	/* 07 */ " }\n" +
aoqi@0	52	/* 08 */ " } finally {\n" +
aoqi@0	53	/* 09 */ " System.out.println(\"finally\");\n" +
aoqi@0	54	/* 10 */ " }\n" +
aoqi@0	55	/* 11 */ " }\n" +
aoqi@0	56	/* 12 */ "}";
aoqi@0	57
aoqi@0	58	static final int[][] expectedLNT = {
aoqi@0	59	// {line-number, start-pc},
aoqi@0	60	{4, 0}, //if (value > 0) {
aoqi@0	61	{5, 4}, // System.out.println("if");
aoqi@0	62	{9, 12}, //System.out.println("finally");
aoqi@0	63	{6, 20}, // return;
aoqi@0	64	{9, 21}, //System.out.println("finally");
aoqi@0	65	{10, 29},
aoqi@0	66	{9, 32}, //System.out.println("finally");
shshahma@3371	67	{10, 41}, //}
aoqi@0	68	{11, 43},
aoqi@0	69	};
aoqi@0	70
aoqi@0	71	static final String methodToLookFor = "lookForThisMethod";
aoqi@0	72
aoqi@0	73	public static void main(String[] args) throws Exception {
aoqi@0	74	new InlinedFinallyConfuseDebuggersTest().run();
aoqi@0	75	}
aoqi@0	76
aoqi@0	77	void run() throws Exception {
aoqi@0	78	compileTestClass();
aoqi@0	79	checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
aoqi@0	80	"InlinedFinallyTest.class").toUri()), methodToLookFor);
aoqi@0	81	}
aoqi@0	82
aoqi@0	83	void compileTestClass() throws Exception {
aoqi@0	84	ToolBox.JavaToolArgs javacSuccessArgs =
aoqi@0	85	new ToolBox.JavaToolArgs().setSources(testSource);
aoqi@0	86	ToolBox.javac(javacSuccessArgs);
aoqi@0	87	}
aoqi@0	88
aoqi@0	89	void checkClassFile(final File cfile, String methodToFind) throws Exception {
aoqi@0	90	ClassFile classFile = ClassFile.read(cfile);
aoqi@0	91	boolean methodFound = false;
aoqi@0	92	for (Method method : classFile.methods) {
aoqi@0	93	if (method.getName(classFile.constant_pool).equals(methodToFind)) {
aoqi@0	94	methodFound = true;
aoqi@0	95	Code_attribute code = (Code_attribute) method.attributes.get("Code");
aoqi@0	96	LineNumberTable_attribute lnt =
aoqi@0	97	(LineNumberTable_attribute) code.attributes.get("LineNumberTable");
aoqi@0	98	Assert.check(lnt.line_number_table_length == expectedLNT.length,
aoqi@0	99	"The LineNumberTable found has a length different to the expected one");
aoqi@0	100	int i = 0;
aoqi@0	101	for (LineNumberTable_attribute.Entry entry: lnt.line_number_table) {
aoqi@0	102	Assert.check(entry.line_number == expectedLNT[i][0] &&
aoqi@0	103	entry.start_pc == expectedLNT[i][1],
aoqi@0	104	"LNT entry at pos " + i + " differ from expected." +
aoqi@0	105	"Found " + entry.line_number + ":" + entry.start_pc +
aoqi@0	106	". Expected " + expectedLNT[i][0] + ":" + expectedLNT[i][1]);
aoqi@0	107	i++;
aoqi@0	108	}
aoqi@0	109	}
aoqi@0	110	}
aoqi@0	111	Assert.check(methodFound, "The seek method was not found");
aoqi@0	112	}
aoqi@0	113
aoqi@0	114	void error(String msg) {
aoqi@0	115	throw new AssertionError(msg);
aoqi@0	116	}
aoqi@0	117
aoqi@0	118	}