File: Issue887.java

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// Test case for Issue 887
// https://github.com/typetools/checker-framework/issues/887
// Additional test case in checker/tests/nullness/Issue887.java

import java.util.List;

public abstract class Issue887 {
    @SuppressWarnings("nullness") // See checker/tests/nullness/Issue887.java
    void test() {
        method(foo(null).get(0));
    }

    void method(Number o) {}

    abstract <T extends Number> List<? extends T> foo(T t);
}