T6258271.java

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/*
 * @test
 * @bug     6258271
 * @summary DiagnosticMessage exposes internal name __input
 * @author  Peter von der Ah\u00e9
 * @modules java.compiler
 *          jdk.compiler
 */

import java.io.*;
import java.util.Arrays;
import javax.tools.*;

public class T6258271 {
    public static void main(String... args) throws IOException {
        JavaCompiler javac = ToolProvider.getSystemJavaCompiler();
        DiagnosticListener<JavaFileObject> dl =  new DiagnosticListener<JavaFileObject>() {
                public void report(Diagnostic<? extends JavaFileObject> message) {
                    JavaFileObject fo = message.getSource();
                    if ("__input".equals(fo.toUri().getPath()))
                        throw new AssertionError(fo);
                    System.out.println(message);
                }
            };
        try (StandardJavaFileManager fm = javac.getStandardFileManager(dl, null, null)) {
            Iterable<? extends JavaFileObject> files =
                fm.getJavaFileObjectsFromStrings(Arrays.asList("nofile.java"));
            javac.getTask(null, fm, dl, null, null, files).call();
        }
    }
}