134 lines
4.9 KiB
Java
134 lines
4.9 KiB
Java
/*
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* Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8231599
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* @summary Verify javac does not crash on preview classfiles from the future
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Java versions.
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* @library /tools/lib
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* @modules
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* jdk.compiler/com.sun.tools.javac.api
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* jdk.compiler/com.sun.tools.javac.jvm
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* jdk.compiler/com.sun.tools.javac.main
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* @build toolbox.ToolBox toolbox.JavacTask
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* @run main TooNewMajorVersionTest
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*/
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import toolbox.JavacTask;
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import toolbox.Task;
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import toolbox.TestRunner;
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import toolbox.ToolBox;
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import com.sun.tools.javac.jvm.ClassFile.Version;
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import java.io.RandomAccessFile;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.List;
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public class TooNewMajorVersionTest extends TestRunner {
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protected ToolBox tb;
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TooNewMajorVersionTest() {
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super(System.err);
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tb = new ToolBox();
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}
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public static void main(String... args) throws Exception {
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TooNewMajorVersionTest t = new TooNewMajorVersionTest();
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t.runTests();
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}
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protected void runTests() throws Exception {
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runTests(m -> new Object[] { Paths.get(m.getName()) });
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}
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@Test
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public void brokenMajorVersionWithPreview(Path base) throws Exception {
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Path src = base.resolve("src");
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tb.writeJavaFiles(src, """
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class C {
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private Object o = null;
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private boolean b = o instanceof String s;
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}
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""");
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Path classes = base.resolve("classes");
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Files.createDirectories(classes);
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for (int upgrade = 1; upgrade < 3; upgrade++) {
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new JavacTask(tb)
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.outdir(classes)
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.options("-XDforcePreview",
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"--enable-preview",
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"--release", String.valueOf(Runtime.version().feature()))
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.files(tb.findJavaFiles(src))
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.run()
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.writeAll();
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Path classfile = classes.resolve("C.class");
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int wrongMajor;
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try (RandomAccessFile f = new RandomAccessFile(classfile.toFile(), "rw")) {
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f.readInt();
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short minor = f.readShort();
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if (minor != (-1)) {
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throw new AssertionError("Unexpected minor version: " + minor);
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}
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long point = f.getFilePointer();
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short major = f.readShort();
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f.seek(point);
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f.writeShort(wrongMajor = major + upgrade);
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}
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Path test = base.resolve("test");
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tb.writeJavaFiles(test, "class Test extends C {}");
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Path testClasses = base.resolve("classes");
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Files.createDirectories(testClasses);
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for (String extraOption : new String[] {"-XDignored", "--enable-preview"}) {
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List<String> log = new JavacTask(tb)
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.outdir(testClasses)
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.options("-XDrawDiagnostics",
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"-classpath", classes.toString(),
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"--release", String.valueOf(Runtime.version().feature()),
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extraOption)
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.files(tb.findJavaFiles(test))
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.run(Task.Expect.FAIL)
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.writeAll()
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.getOutputLines(Task.OutputKind.DIRECT);
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List<String> expected = List.of(
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"Test.java:1:20: compiler.err.cant.access: C, (compiler.misc.bad.class.file.header: C.class, (compiler.misc.wrong.version: " + wrongMajor + ", 65535, " + Version.MAX().major + ", 0))",
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"1 error"
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);
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if (!log.equals(expected))
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throw new Exception("expected output not found" + log);
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}
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}
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}
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}
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