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 * Copyright (c) 2026, 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.
 *
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 * questions.
 */

/*
 * @test
 * @bug 9999999
 * @summary XXX
 * @library /tools/lib
 * @modules
 *      jdk.compiler/com.sun.tools.javac.api
 *      jdk.compiler/com.sun.tools.javac.main
 * @build toolbox.ToolBox toolbox.JavacTask
 * @run main JDK_8378524
 */


import java.io.IOException;
import java.io.Writer;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Set;
import javax.annotation.processing.AbstractProcessor;
import javax.annotation.processing.RoundEnvironment;
import javax.annotation.processing.SupportedAnnotationTypes;
import javax.lang.model.element.TypeElement;
import toolbox.JavacTask;
import toolbox.ToolBox;

public class JDK_8378524 {

    public static void main(String... args) throws Exception {
        new JDK_8378524().run();
    }

    ToolBox tb = new ToolBox();

    void run() throws Exception {
        test(Paths.get("."));
    }

    void test(Path base) throws Exception {
        Path src = base.resolve("src");
        Path classes = base.resolve("classes");
        tb.writeJavaFiles(src,
                          """
                          package test;
                          
                          import java.lang.annotation.Repeatable;
                          
                          @Rep(Constants.C)
                          @Rep(Constants.C)
                          public class Test {}

                          @Repeatable(Reps.class)
                          @interface Rep {
                              int value();
                          }
                          @interface Reps {
                              Rep[] value();
                          }
                          """);
        Files.createDirectories(classes);

        new JavacTask(tb)
                .options("-d", classes.toString())
                .files(tb.findJavaFiles(src))
                .processors(new ProcessorImpl())
                .run()
                .writeAll();
    }

    @SupportedAnnotationTypes("*")
    private static class ProcessorImpl extends AbstractProcessor {

        int round = 0;

        @Override
        public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
            if (round++ == 0) {
                try (Writer w = processingEnv.getFiler().createSourceFile("test.Constants").openWriter()) {
                    w.append("""
                             package test;
                             public class Constants {
                                 public static final int C = 0;
                             }
                             """);
                } catch (IOException ex) {
                    throw new IllegalStateException(ex);
                }
            }

            return false;
        }
        
    }
}