test/langtools/tools/javac/T6458749.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 6458749
 * @summary  TypeParameterElement.getEnclosedElements() throws NPE within javac
 * @modules java.compiler
 *          jdk.compiler
 * @build T6458749
 * @compile -processor T6458749 -proc:only T6458749.java
 */

import java.util.Set;
import javax.annotation.processing.*;
import javax.lang.model.element.*;
import javax.lang.model.util.ElementFilter;
import javax.lang.model.SourceVersion;

@SupportedAnnotationTypes("*")
public class T6458749<T> extends AbstractProcessor {
    public boolean process(Set<? extends TypeElement> tes, RoundEnvironment renv) {
        if (!renv.processingOver()) {
            for(TypeElement e : ElementFilter.typesIn(renv.getRootElements())) {
                System.out.printf("Element %s:%n", e.toString());
                try {
                    for (TypeParameterElement tp : e.getTypeParameters()) {
                        System.out.printf("Type param %s", tp.toString());
                        if (! tp.getEnclosedElements().isEmpty()) {
                            throw new AssertionError("TypeParameterElement.getEnclosedElements() should return empty list");
                        }
                    }
                } catch (NullPointerException npe) {
                    throw new AssertionError("NPE from TypeParameterElement.getEnclosedElements()", npe);
                }
            }
        }
        return true;
    }

    public SourceVersion getSupportedSourceVersion() {
        return SourceVersion.latest();
    }
}