Full qualified access is impossible for anonymous inner-classes

[Bernhard Haumacher (haui at haumacher dot de)]

In the following code, the access to the variable 'norm' in generated code is wrong. The compiler crashes.

interface I {
  public int eval(int x);
}
class A {
  public static int foo() {
    final I f = new I() {
         int norm = Math.min(2, 3);
         public int eval(int x) {
           return norm * x;
         }
    };
    return f.eval(13);
  }
}

Evaluation

The compiler tries to generate a fully qualified access to the variable 'norm' of the form 'jp.test.TestInnerVar.foo..this.norm'. Because the inner class is anonymous, there is no such fully qualified access to 'norm'. The access should be transformed to 'this.norm'.

Solution

Use no reference to variables of anonymous inner classes at all.

See also

ticket:63

Test

jp.test.TestInnerVar

fixed since 1.05c.