jdk8-mips64-public/langtools: comparison test/tools/javac/T8180660/MissingLNTEntryForFinalizerTest.java

-:08cf09e3f9a3
+:08a21473de54
+/*
+* 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
+* @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.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);
+}
+protected void checkReusable() {
+// do nothing
+}
+@Override
+public void close() {
+//do nothing
+}
+void clear() {
+//do nothing
+}
+}
+}

Mercurial > jdk8-mips64-public > langtools / file comparison

comparison: test/tools/javac/T8180660/MissingLNTEntryForFinalizerTest.java

test/tools/javac/T8180660/MissingLNTEntryForFinalizerTest.java