[GROOVY-6818] StackOverflow Exception when calling super.method, which returns an instance of the corresponding class.

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 2.2.2
• Fix Version/s: 2.3.0
• Component/s: groovy-jdk
• Environment: Mac OSX Mavericks, IntelliJ IDEA
• Assignee: Jochen Theodorou
• Reporter: Romaric Philogene
• Created: 24/May/14 11:23
• Updated: 11/Jun/14 14:26
• Resolved: 04/Jun/14 03:24

Description

You get a StackOverflow Exception when running following code:

A.groovy

abstract class A {
    A attach(){
        System.out.println( "A does something else");
        return this;
    }
}

B.groovy

class B extends A {
    @Override
    B attach(){
        System.out.println("B does something else");
        return (B) super.attach();
    }
}

C.groovy

class C extends B {
    @Override
    C attach(){
        System.out.println("C does something else");
        return (C) super.attach();
    }
}

Test.groovy

C c = new C(); c.attach();

This bug only occurs when the depth of the class hierarchy exceeds two classes.
The whole ErrorOutput can be found attached.

Error.output

C does something else
C does something else
C does something else
C does something else
Exception in thread "main" java.lang.StackOverflowError
	at groovy.lang.MetaClassImpl.getMetaProperty(MetaClassImpl.java:2441)
	at groovy.lang.MetaClassImpl.getMetaProperty(MetaClassImpl.java:2415)
	at groovy.lang.MetaClassImpl.getProperty(MetaClassImpl.java:1510)
	at groovy.lang.MetaClassImpl.getProperty(MetaClassImpl.java:3308)
	at org.codehaus.groovy.runtime.callsite.ClassMetaClassGetPropertySite.getProperty(ClassMetaClassGetPropertySite.java:48)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:227)
	at C.attach(C.groovy:20)
	at C.attach(C.groovy)
	at B.attach(B.groovy)
	at C.super$3$attach(C.groovy)
	at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
	at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
	at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1047)
	at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuperN(ScriptBytecodeAdapter.java:128)
	at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuper0(ScriptBytecodeAdapter.java:148)