ParseError on annotated varargs

[Bananeweizen]

/var/tmp $ javac YOUR_FILE.java:

not using javac, but ecc

/var/tmp $ cat YOUR_FILE.java:

package reproduction

import org.eclipse.jdt.annotation.NonNull;

public class Failure {

    public Object parseError(@NonNull final Object @NonNull... problematicArgument) {
        return this;
    }

}

The problematic part is "@nonnull...". The import is https://mvnrepository.com/artifact/org.eclipse.jdt/org.eclipse.jdt.annotation/2.0.0 (or more recent), the Eclipse Java compiler type annotations for nullness. I'm sure this can be reproduced with other type annotations, too.

/var/tmp $ java -Duser.language=en -Duser.country=US -jar checkstyle-X.XX-all.jar -c config.xml YOUR_FILE.java:

 com.puppycrawl.tools.checkstyle.api.CheckstyleException: MismatchedTokenException occurred during the analysis of file D:\development\esdl\git\project33\plugins\com.etas.esdl\src\com\etas\esdl\validation\utils\Failure.java.
	at com.puppycrawl.tools.checkstyle.TreeWalker.processFiltered(TreeWalker.java:229)
	at com.puppycrawl.tools.checkstyle.api.AbstractFileSetCheck.process(AbstractFileSetCheck.java:83)
	at com.puppycrawl.tools.checkstyle.Checker.processFile(Checker.java:319)
	at com.puppycrawl.tools.checkstyle.Checker.processFiles(Checker.java:289)
	... 16 more
Caused by: D:\development\esdl\git\project33\plugins\com.etas.esdl\src\com\etas\esdl\validation\utils\Failure.java:9:5: expecting EOF, found '}'
	at antlr.Parser.match(Parser.java:211)
	at com.puppycrawl.tools.checkstyle.grammars.GeneratedJavaRecognizer.compilationUnit(GeneratedJavaRecognizer.java:211)
	at com.puppycrawl.tools.checkstyle.TreeWalker.parse(TreeWalker.java:498)
	at com.puppycrawl.tools.checkstyle.TreeWalker.processFiltered(TreeWalker.java:200)

This is checkstyle 8.7.0, being used from Eclipse-CS 8.7.0

[rnveach]

duplicate of #3238