1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/T8019486/WrongLNTForLambdaTest.java Wed Oct 23 07:50:04 2013 +0200
1.3 @@ -0,0 +1,160 @@
1.4 +/*
1.5 + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +/*
1.30 + * @test
1.31 + * @bug 8019486 8026861
1.32 + * @summary javac, generates erroneous LVT for a test case with lambda code
1.33 + * @library /tools/javac/lib
1.34 + * @build ToolBox
1.35 + * @run main WrongLNTForLambdaTest
1.36 + */
1.37 +
1.38 +import java.io.File;
1.39 +import java.nio.file.Paths;
1.40 +
1.41 +import com.sun.tools.classfile.ClassFile;
1.42 +import com.sun.tools.classfile.Code_attribute;
1.43 +import com.sun.tools.classfile.LineNumberTable_attribute;
1.44 +import com.sun.tools.classfile.Method;
1.45 +import com.sun.tools.javac.util.Assert;
1.46 +
1.47 +public class WrongLNTForLambdaTest {
1.48 +
1.49 + static final String testSource =
1.50 + /* 01 */ "import java.util.List;\n" +
1.51 + /* 02 */ "import java.util.Arrays;\n" +
1.52 + /* 03 */ "import java.util.stream.Collectors;\n" +
1.53 + /* 04 */ "\n" +
1.54 + /* 05 */ "public class Foo {\n" +
1.55 + /* 06 */ " void bar(int value) {\n" +
1.56 + /* 07 */ " final List<Integer> numbers = Arrays.asList(1, 2, 3);\n" +
1.57 + /* 08 */ " final List<Integer> numbersPlusOne = \n" +
1.58 + /* 09 */ " numbers.stream().map(number -> number / 1).collect(Collectors.toList());\n" +
1.59 + /* 10 */ " }\n" +
1.60 + /* 11 */ " void variablesInLambdas(int value) {\n" +
1.61 + /* 12 */ " Runnable r1 = () -> {\n" +
1.62 + /* 13 */ " int i = value;\n" +
1.63 + /* 14 */ " class FooBar<T extends CharSequence> {\n" +
1.64 + /* 15 */ " public void run() {\n" +
1.65 + /* 16 */ " T t = null;\n" +
1.66 + /* 17 */ " }\n" +
1.67 + /* 18 */ " }\n" +
1.68 + /* 19 */ " };\n" +
1.69 + /* 20 */ " Runnable r2 = () -> System.err.println(1);\n" +
1.70 + /* 21 */ " Runnable r3 = (Runnable & java.io.Serializable) this::foo;\n" +
1.71 + /* 22 */ " Runnable r4 = super :: notify;\n" +
1.72 + /* 23 */ " }\n" +
1.73 + /* 24 */ " private void foo() {}\n" +
1.74 + /* 25 */ "}";
1.75 +
1.76 + static final int[][] simpleLambdaExpectedLNT = {
1.77 + // {line-number, start-pc},
1.78 + {9, 0}, //number -> number / 1
1.79 + };
1.80 +
1.81 + static final int[][] lambdaWithVarsExpectedLNT = {
1.82 + // {line-number, start-pc},
1.83 + {13, 0}, //number -> number / 1
1.84 + {19, 2}, //number -> number / 1
1.85 + };
1.86 +
1.87 + static final int[][] insideLambdaWithVarsExpectedLNT = {
1.88 + // {line-number, start-pc},
1.89 + {16, 0}, //number -> number / 1
1.90 + {17, 2}, //number -> number / 1
1.91 + };
1.92 +
1.93 + static final int[][] lambdaVoid2VoidExpectedLNT = {
1.94 + // {line-number, start-pc},
1.95 + {20, 0}, //number -> number / 1
1.96 + };
1.97 +
1.98 + static final int[][] deserializeExpectedLNT = {
1.99 + // {line-number, start-pc},
1.100 + {05, 0}, //number -> number / 1
1.101 + };
1.102 +
1.103 + static final int[][] lambdaBridgeExpectedLNT = {
1.104 + // {line-number, start-pc},
1.105 + {22, 0}, //number -> number / 1
1.106 + };
1.107 +
1.108 + public static void main(String[] args) throws Exception {
1.109 + new WrongLNTForLambdaTest().run();
1.110 + }
1.111 +
1.112 + void run() throws Exception {
1.113 + compileTestClass();
1.114 + checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
1.115 + "Foo.class").toUri()), "lambda$bar$0", simpleLambdaExpectedLNT);
1.116 + checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
1.117 + "Foo.class").toUri()), "lambda$variablesInLambdas$1", lambdaWithVarsExpectedLNT);
1.118 + checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
1.119 + "Foo$1FooBar.class").toUri()), "run", insideLambdaWithVarsExpectedLNT);
1.120 + checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
1.121 + "Foo.class").toUri()), "lambda$variablesInLambdas$2", lambdaVoid2VoidExpectedLNT);
1.122 + checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
1.123 + "Foo.class").toUri()), "$deserializeLambda$", deserializeExpectedLNT);
1.124 + checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
1.125 + "Foo.class").toUri()), "lambda$MR$variablesInLambdas$notify$8bc4f5bd$1", lambdaBridgeExpectedLNT);
1.126 + }
1.127 +
1.128 + void compileTestClass() throws Exception {
1.129 + ToolBox.JavaToolArgs javacSuccessArgs =
1.130 + new ToolBox.JavaToolArgs().setSources(testSource);
1.131 + ToolBox.javac(javacSuccessArgs);
1.132 + }
1.133 +
1.134 + void checkClassFile(final File cfile, String methodToFind, int[][] expectedLNT) throws Exception {
1.135 + ClassFile classFile = ClassFile.read(cfile);
1.136 + boolean methodFound = false;
1.137 + for (Method method : classFile.methods) {
1.138 + if (method.getName(classFile.constant_pool).equals(methodToFind)) {
1.139 + methodFound = true;
1.140 + Code_attribute code = (Code_attribute) method.attributes.get("Code");
1.141 + LineNumberTable_attribute lnt =
1.142 + (LineNumberTable_attribute) code.attributes.get("LineNumberTable");
1.143 + Assert.check(lnt.line_number_table_length == expectedLNT.length,
1.144 + "The LineNumberTable found has a length different to the expected one");
1.145 + int i = 0;
1.146 + for (LineNumberTable_attribute.Entry entry: lnt.line_number_table) {
1.147 + Assert.check(entry.line_number == expectedLNT[i][0] &&
1.148 + entry.start_pc == expectedLNT[i][1],
1.149 + "LNT entry at pos " + i + " differ from expected." +
1.150 + "Found " + entry.line_number + ":" + entry.start_pc +
1.151 + ". Expected " + expectedLNT[i][0] + ":" + expectedLNT[i][1]);
1.152 + i++;
1.153 + }
1.154 + }
1.155 + }
1.156 + Assert.check(methodFound, "The seek method was not found");
1.157 + }
1.158 +
1.159 + void error(String msg) {
1.160 + throw new AssertionError(msg);
1.161 + }
1.162 +
1.163 +}
