--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/T8180660/MissingLNTEntryForFinalizerTest.java Mon May 22 12:49:05 2017 -0700
@@ -0,0 +1,180 @@
+/*
+ * Copyright (c) 2017, 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.
+ *
+ * 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 8180141
+ * @summary Missing entry in LineNumberTable for break statement that jumps out of try-finally
+ * @modules jdk.jdeps/com.sun.tools.classfile
+ * jdk.compiler/com.sun.tools.javac.code
+ * jdk.compiler/com.sun.tools.javac.comp
+ * jdk.compiler/com.sun.tools.javac.file
+ * jdk.compiler/com.sun.tools.javac.main
+ * jdk.compiler/com.sun.tools.javac.tree
+ * jdk.compiler/com.sun.tools.javac.util
+ * @compile -g MissingLNTEntryForFinalizerTest.java
+ * @run main MissingLNTEntryForFinalizerTest
+ */
+
+import java.io.File;
+import java.net.URI;
+
+import javax.tools.JavaFileObject;
+import javax.tools.SimpleJavaFileObject;
+
+import com.sun.tools.classfile.*;
+import com.sun.tools.javac.comp.Attr;
+import com.sun.tools.javac.comp.AttrContext;
+import com.sun.tools.javac.comp.Env;
+import com.sun.tools.javac.comp.Modules;
+import com.sun.tools.javac.file.JavacFileManager;
+import com.sun.tools.javac.main.JavaCompiler;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.tree.JCTree.*;
+import com.sun.tools.javac.util.Context;
+import com.sun.tools.javac.util.List;
+
+import static com.sun.tools.javac.util.List.of;
+import static com.sun.tools.javac.tree.JCTree.Tag.*;
+
+public class MissingLNTEntryForFinalizerTest {
+ protected ReusableJavaCompiler tool;
+ Context context;
+
+ MissingLNTEntryForFinalizerTest() {
+ context = new Context();
+ JavacFileManager.preRegister(context);
+ MyAttr.preRegister(context);
+ tool = new ReusableJavaCompiler(context);
+ }
+
+ public static void main(String... args) throws Throwable {
+ new MissingLNTEntryForFinalizerTest().test();
+ }
+
+ void test() throws Throwable {
+ JavaSource source = new JavaSource("1");
+ tool.clear();
+ List<JavaFileObject> inputs = of(source);
+ try {
+ tool.compile(inputs);
+ } catch (Throwable ex) {
+ throw new AssertionError(ex);
+ }
+ File testClasses = new File(".");
+ File file = new File(testClasses, "Test1.class");
+ ClassFile classFile = ClassFile.read(file);
+ for (Method m : classFile.methods) {
+ if (classFile.constant_pool.getUTF8Value(m.name_index).equals("foo")) {
+ Code_attribute code = (Code_attribute)m.attributes.get(Attribute.Code);
+ LineNumberTable_attribute lnt = (LineNumberTable_attribute)code.attributes.get(Attribute.LineNumberTable);
+ checkLNT(lnt, MyAttr.lineNumber);
+ }
+ }
+ }
+
+ void checkLNT(LineNumberTable_attribute lnt, int lineToCheckFor) {
+ for (LineNumberTable_attribute.Entry e: lnt.line_number_table) {
+ if (e.line_number == lineToCheckFor) {
+ return;
+ }
+ }
+ throw new AssertionError("seek line number not found in the LNT for method foo()");
+ }
+
+ class JavaSource extends SimpleJavaFileObject {
+ String id;
+ String template =
+ "import java.util.*;\n" +
+ "class Test#Id {\n" +
+ " void foo() {\n" +
+ " List<String> l = null;\n" +
+ " String first = null;\n" +
+ " try {\n" +
+ " first = l.get(0);\n" +
+ " } finally {\n" +
+ " if (first != null) {\n" +
+ " System.out.println(\"finalizer\");\n" +
+ " }\n" +
+ " }\n" +
+ " }\n" +
+ "}";
+
+ JavaSource(String id) {
+ super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
+ this.id = id;
+ }
+
+ @Override
+ public CharSequence getCharContent(boolean ignoreEncodingErrors) {
+ return template.replace("#Id", id);
+ }
+ }
+
+ /* this class has been set up to do not depend on a fixed line number, this Attr subclass will
+ * look for 'break' or 'continue' statements in order to find the actual line number they occupy.
+ * This way the test can find if that line number appears in the LNT generated for a given class.
+ */
+ static class MyAttr extends Attr {
+ static int lineNumber;
+
+ static void preRegister(Context context) {
+ context.put(attrKey, (com.sun.tools.javac.util.Context.Factory<Attr>) c -> new MyAttr(c));
+ }
+
+ MyAttr(Context context) {
+ super(context);
+ }
+
+ @Override
+ public com.sun.tools.javac.code.Type attribStat(JCTree tree, Env<AttrContext> env) {
+ com.sun.tools.javac.code.Type result = super.attribStat(tree, env);
+ if (tree.hasTag(TRY)) {
+ JCTry tryTree = (JCTry)tree;
+ lineNumber = env.toplevel.lineMap.getLineNumber(tryTree.finalizer.endpos);
+ }
+ return result;
+ }
+ }
+
+ static class ReusableJavaCompiler extends JavaCompiler {
+ ReusableJavaCompiler(Context context) {
+ super(context);
+ }
+
+ @Override
+ protected void checkReusable() {
+ // do nothing
+ }
+
+ @Override
+ public void close() {
+ //do nothing
+ }
+
+ void clear() {
+ newRound();
+ Modules.instance(context).newRound();
+ }
+ }
+}