jdk-24/test/langtools/tools/javac/T8028504/DontGenerateLVTForGNoneOpTest.java
2024-05-24 15:58:34 +00:00

74 lines
2.5 KiB
Java

/*
* Copyright (c) 2013, 2015, 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 8028504
* @summary javac generates LocalVariableTable even with -g:none
* @enablePreview
* @compile -g:none DontGenerateLVTForGNoneOpTest.java
* @run main DontGenerateLVTForGNoneOpTest
*/
import java.io.File;
import java.lang.annotation.ElementType;
import java.lang.annotation.Target;
import java.nio.file.Paths;
import java.lang.classfile.*;
import java.lang.classfile.attribute.CodeAttribute;
public class DontGenerateLVTForGNoneOpTest {
public static void main(String[] args) throws Exception {
new DontGenerateLVTForGNoneOpTest().run();
}
void run() throws Exception {
checkClassFile(new File(Paths.get(System.getProperty("test.classes"),
this.getClass().getName() + ".class").toUri()));
}
void checkClassFile(final File cfile) throws Exception {
ClassModel classFile = ClassFile.of().parse(cfile.toPath());
for (MethodModel method : classFile.methods()) {
CodeAttribute code = method.findAttribute(Attributes.code()).orElse(null);
if (code != null) {
if (code.findAttribute(Attributes.localVariableTable()).orElse(null) != null) {
throw new AssertionError("LVT shouldn't be generated for g:none");
}
}
}
}
public void bar() {
try {
System.out.println();
} catch(@TA Exception e) {
} catch(Throwable t) {}
}
@Target(ElementType.TYPE_USE)
@interface TA {}
}