Groovy bug

bug.groovy

class A {
    A() {
        func()
    }
    void func() {

    }
}
void func() {
    def t = false
    def a = new A() {
        @Override
        void func() {
            assert t != null
            println "t is ${t}"
        }
    }
    //t = true
    a.func()
}

func()

bug.java

package com.github.RomanSaveljev.modemchat;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
    private static class A {
        A() {
            func();
        }
        void func() {

        }
    }
    static void func() {
        Boolean t = false;
        A a = new A() {
            @Override
            void func() {
                assert t != null;
                System.out.println(t.toString());
                //println "t is ${t}"
            }
        };
        //t = true
        a.func();
    }

    public static void main (String[] args) throws java.lang.Exception
    {
        System.out.println("MOOO");
        func();
    }
}