langtools/test/tools/javac/lambda/TargetType42.java

/*
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 8003280
 * @summary Add lambda tests
 *  effects of speculative attribution are undone on a per-argument basis rather than on a per-resolution basis
 * @compile TargetType42.java
 */
class TargetType42 {

    interface SAM<X, Y> {
        Y f(X x);
    }

    <Z> void m(SAM<String, SAM<Z, Object>> s, Z z) { }

    void test(Object obj) {
        m((x)->{
            class Foo { }
            return (x2)-> {
                new Foo();
                return null;
            };
        }, obj);
    }
}