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

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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 8029558
 * @summary VerifyError lambda body is parenthesized generic value
 * @author  Robert Field
 * @run main LambdaParenGeneric
 */

public class LambdaParenGeneric {

    @FunctionalInterface
    public interface FI {
        Integer apply();
    }

    public static class Val<A> {
        A value;
        Val(A v) { value = v; }
    }

    public static void main(String[] args) {
        FI inc = () -> (new Val<Integer>(77).value);
        System.out.println(inc.apply());
    }
}