--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/T8019486/WrongLNTForLambdaTest.java Wed Oct 23 07:50:04 2013 +0200
@@ -0,0 +1,160 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8019486 8026861
+ * @summary javac, generates erroneous LVT for a test case with lambda code
+ * @library /tools/javac/lib
+ * @build ToolBox
+ * @run main WrongLNTForLambdaTest
+ */
+
+import java.io.File;
+import java.nio.file.Paths;
+
+import com.sun.tools.classfile.ClassFile;
+import com.sun.tools.classfile.Code_attribute;
+import com.sun.tools.classfile.LineNumberTable_attribute;
+import com.sun.tools.classfile.Method;
+import com.sun.tools.javac.util.Assert;
+
+public class WrongLNTForLambdaTest {
+
+ static final String testSource =
+ /* 01 */ "import java.util.List;\n" +
+ /* 02 */ "import java.util.Arrays;\n" +
+ /* 03 */ "import java.util.stream.Collectors;\n" +
+ /* 04 */ "\n" +
+ /* 05 */ "public class Foo {\n" +
+ /* 06 */ " void bar(int value) {\n" +
+ /* 07 */ " final List<Integer> numbers = Arrays.asList(1, 2, 3);\n" +
+ /* 08 */ " final List<Integer> numbersPlusOne = \n" +
+ /* 09 */ " numbers.stream().map(number -> number / 1).collect(Collectors.toList());\n" +
+ /* 10 */ " }\n" +
+ /* 11 */ " void variablesInLambdas(int value) {\n" +
+ /* 12 */ " Runnable r1 = () -> {\n" +
+ /* 13 */ " int i = value;\n" +
+ /* 14 */ " class FooBar<T extends CharSequence> {\n" +
+ /* 15 */ " public void run() {\n" +
+ /* 16 */ " T t = null;\n" +
+ /* 17 */ " }\n" +
+ /* 18 */ " }\n" +
+ /* 19 */ " };\n" +
+ /* 20 */ " Runnable r2 = () -> System.err.println(1);\n" +
+ /* 21 */ " Runnable r3 = (Runnable & java.io.Serializable) this::foo;\n" +
+ /* 22 */ " Runnable r4 = super :: notify;\n" +
+ /* 23 */ " }\n" +
+ /* 24 */ " private void foo() {}\n" +
+ /* 25 */ "}";
+
+ static final int[][] simpleLambdaExpectedLNT = {
+ // {line-number, start-pc},
+ {9, 0}, //number -> number / 1
+ };
+
+ static final int[][] lambdaWithVarsExpectedLNT = {
+ // {line-number, start-pc},
+ {13, 0}, //number -> number / 1
+ {19, 2}, //number -> number / 1
+ };
+
+ static final int[][] insideLambdaWithVarsExpectedLNT = {
+ // {line-number, start-pc},
+ {16, 0}, //number -> number / 1
+ {17, 2}, //number -> number / 1
+ };
+
+ static final int[][] lambdaVoid2VoidExpectedLNT = {
+ // {line-number, start-pc},
+ {20, 0}, //number -> number / 1
+ };
+
+ static final int[][] deserializeExpectedLNT = {
+ // {line-number, start-pc},
+ {05, 0}, //number -> number / 1
+ };
+
+ static final int[][] lambdaBridgeExpectedLNT = {
+ // {line-number, start-pc},
+ {22, 0}, //number -> number / 1
+ };
+
+ public static void main(String[] args) throws Exception {
+ new WrongLNTForLambdaTest().run();
+ }
+
+ void run() throws Exception {
+ compileTestClass();
+ checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
+ "Foo.class").toUri()), "lambda$bar$0", simpleLambdaExpectedLNT);
+ checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
+ "Foo.class").toUri()), "lambda$variablesInLambdas$1", lambdaWithVarsExpectedLNT);
+ checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
+ "Foo$1FooBar.class").toUri()), "run", insideLambdaWithVarsExpectedLNT);
+ checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
+ "Foo.class").toUri()), "lambda$variablesInLambdas$2", lambdaVoid2VoidExpectedLNT);
+ checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
+ "Foo.class").toUri()), "$deserializeLambda$", deserializeExpectedLNT);
+ checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
+ "Foo.class").toUri()), "lambda$MR$variablesInLambdas$notify$8bc4f5bd$1", lambdaBridgeExpectedLNT);
+ }
+
+ void compileTestClass() throws Exception {
+ ToolBox.JavaToolArgs javacSuccessArgs =
+ new ToolBox.JavaToolArgs().setSources(testSource);
+ ToolBox.javac(javacSuccessArgs);
+ }
+
+ void checkClassFile(final File cfile, String methodToFind, int[][] expectedLNT) throws Exception {
+ ClassFile classFile = ClassFile.read(cfile);
+ boolean methodFound = false;
+ for (Method method : classFile.methods) {
+ if (method.getName(classFile.constant_pool).equals(methodToFind)) {
+ methodFound = true;
+ Code_attribute code = (Code_attribute) method.attributes.get("Code");
+ LineNumberTable_attribute lnt =
+ (LineNumberTable_attribute) code.attributes.get("LineNumberTable");
+ Assert.check(lnt.line_number_table_length == expectedLNT.length,
+ "The LineNumberTable found has a length different to the expected one");
+ int i = 0;
+ for (LineNumberTable_attribute.Entry entry: lnt.line_number_table) {
+ Assert.check(entry.line_number == expectedLNT[i][0] &&
+ entry.start_pc == expectedLNT[i][1],
+ "LNT entry at pos " + i + " differ from expected." +
+ "Found " + entry.line_number + ":" + entry.start_pc +
+ ". Expected " + expectedLNT[i][0] + ":" + expectedLNT[i][1]);
+ i++;
+ }
+ }
+ }
+ Assert.check(methodFound, "The seek method was not found");
+ }
+
+ void error(String msg) {
+ throw new AssertionError(msg);
+ }
+
+}