import groovy.lang.GroovyClassLoader;

class LeakDynamic {

    public static interface TestClass {
        String getThingy();
    }

    static String getTheThingy() {
        return "the thingy";
    }

    @SuppressWarnings("unchecked")
    public static void main(String[] args) throws Exception {
        for (int i = 0; i < 1000; i++) {
            var cl = new GroovyClassLoader();
            var c = cl.parseClass("class TestClass" + i + " implements LeakDynamic.TestClass { public String getThingy() { return LeakDynamic.getTheThingy(); } }");
            var t = (TestClass) c.getConstructor().newInstance();
            assert t.getThingy() == getTheThingy();
        }
    }
}