99 lines
3.8 KiB
Java
99 lines
3.8 KiB
Java
/*
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* Copyright (c) 2025, 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 8358078
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* @summary javap should not crash due to class file versions
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* @library /tools/lib
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* @modules jdk.jdeps/com.sun.tools.javap
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* @run junit ClassFileVersionTest
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*/
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.Arguments;
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import org.junit.jupiter.params.provider.MethodSource;
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import toolbox.JavapTask;
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import toolbox.Task;
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import toolbox.ToolBox;
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import java.lang.classfile.ClassFile;
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import java.lang.constant.ClassDesc;
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import java.lang.reflect.AccessFlag;
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import java.lang.reflect.ClassFileFormatVersion;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.stream.Stream;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.params.provider.Arguments.of;
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public class ClassFileVersionTest {
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final ToolBox toolBox = new ToolBox();
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public static Stream<Arguments> classFiles() {
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int major17 = ClassFileFormatVersion.RELEASE_17.major();
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int preview = Character.MAX_VALUE;
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int majorLatest = ClassFileFormatVersion.latest().major();
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AccessFlag[] noFlags = {};
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return Stream.of(
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of(false, major17, 0, noFlags),
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of(false, major17, preview, noFlags),
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of(false, 0, 0, noFlags),
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of(false, major17, 0, new AccessFlag[]{AccessFlag.PUBLIC}),
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of(false, major17, preview, new AccessFlag[]{AccessFlag.PUBLIC}),
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of(false, majorLatest, preview, new AccessFlag[]{AccessFlag.PUBLIC}),
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of(true, majorLatest, 0, new AccessFlag[]{AccessFlag.BRIDGE}), // misplaced access flag
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of(true, majorLatest, preview, new AccessFlag[]{AccessFlag.BRIDGE}) // misplaced access flag
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);
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}
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private static byte[] createClassFile(int major, int minor, AccessFlag[] classFlags) {
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return ClassFile.of().build(ClassDesc.of("Test"), (builder) -> {
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// manually assemble flag bits to avoid exception in ClassFile api
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int flags = 0;
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for (AccessFlag classFlag : classFlags) {
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flags |= classFlag.mask();
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}
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builder.withVersion(major, minor).withFlags(flags);
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});
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}
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@ParameterizedTest
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@MethodSource("classFiles")
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void test(boolean shouldError, int major, int minor, AccessFlag[] classFlags) throws Throwable {
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Files.write(Path.of("cf.class"), createClassFile(major, minor, classFlags));
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var lines = new JavapTask(toolBox)
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.classes("cf.class")
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.options("-c", "-p", "-v")
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.run(shouldError ? Task.Expect.FAIL : Task.Expect.SUCCESS)
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.writeAll()
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.getOutputLines(Task.OutputKind.DIRECT);
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assertEquals(shouldError, lines.stream().anyMatch(l -> l.startsWith("Error: Access Flags:")), "printed error");
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}
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}
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