File: WildcardForEach.java

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import java.util.List;

public class WildcardForEach {
    static class Gen<T extends Gen<?>> {}

    void test(List<Gen<?>> x) {
        // This used to cause a crash in
        // org.checkerframework.framework.flow.CFTreeBuilder#buildAnnotatedType
        for (Gen<?> a : x) {}
    }
}