This program doesn't compile when source is set to a value other than 8 (the example is a bit more verbose than necessary, to get better output):

interface Bar<X extends Bar<X>> { }

class Test {
    <A extends Bar<A>> void test() {
        A result = m();
    }

<B extends Bar<B>> B m() {
        return null;
    }
}

Error:

/opt/JDK/8/re/b40/bin/javac -source 7 Main.java
Main.java:7: error: incompatible types: inferred type does not conform to upper bound(s)
        A result = m();
                    ^
    inferred: B
    upper bound(s): Bar<B>,A
  where B,A are type-variables:
    B extends A
    A extends Bar<A> declared in method <A>test()
1 error

Compiling w/o the -source flag, or with a JDK 7 compiler works w/o issues.