test/langtools/tools/javac/lambda/8016177/T8016177e.java

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/*
 * @test
 * @bug 8016081 8016178
 * @summary structural most specific and stuckness
 * @compile T8016177e.java
 */
import java.util.*;

class T8016177e {

    interface TerminalOp<X, Y> { }

    interface Consumer<X> {
        void m(X x);
    }

    <T> TerminalOp<T, Void> makeRef(Consumer<? super T> action) { return null; }

    <T> void test() {
        Map<T, Boolean> map = null;
        TerminalOp<T, Void> forEachOp = makeRef(t -> { map.put(t, null); });
    }
}