static class Test {
    Test() {}

    Test(int a) {
        class InnerLocal {} //compilation succeeds
        new InnerLocal() {}; //compilation fails here
        new Object() {}; //compilation succeeds
        new InnerLocal(); //compilation succeeds here
        this();
    }
}
 

With JDK24b5:
/Main.java:6: error: cannot reference this before supertype constructor has been called
        new InnerLocal() {}; //compilation fails here

The same code compiles if put in static context:

static void test(int a) {
    class InnerLocal {}
    new InnerLocal() {}; //no compilation error
}
 
The specification is murky in this area, however, as per email discussion, the code should compile.