[GROOVY-3712] @Delegate produces invalid class file

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.7-rc-2
• Fix Version/s: 1.6.8, 1.7.1, 1.8-beta-1
• Component/s: Compiler
• Environment: Mac OS 10.5.8; Java 1.5.0_19
• Assignee: Roshan Dawrani
• Reporter: Peter Niederwieser
• Created: 29/Aug/09 06:59
• Updated: 07/Apr/10 23:47
• Resolved: 18/Dec/09 11:02

Description

org/spockframework/Foob.groovy:

package org.spockframework

class Foob {
  def doit() { println "foob" }
}

org/spockframework/compiler/Barb.groovy:

package org.spockframework.compiler

import org.spockframework.Foob

class Barb {
  @Delegate Foob foob

  static void main(String[] args) {
    new Barb().barb()
  }

  def barb() {
    this.doit()
  }
}

When I run the main method, I get:

Exception in thread "main" java.lang.ClassFormatError: Repetitive method name/signature in class file org/spockframework/compiler/Barb
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:675)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:316)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:280)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:374)

When I change this.doit() to doit(), I get:

Exception in thread "main" java.lang.NullPointerException: Cannot invoke method doit() on null object
	at org.codehaus.groovy.runtime.NullObject.invokeMethod(NullObject.java:77)
	at org.codehaus.groovy.runtime.InvokerHelper.invokePogoMethod(InvokerHelper.java:751)
	at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:728)
	at org.codehaus.groovy.runtime.callsite.NullCallSite.call(NullCallSite.java:17)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:117)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:121)
	at org.spockframework.compiler.Barb.doit(Barb.groovy)
	at org.spockframework.compiler.Barb$doit.callCurrent(Unknown Source)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:44)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:143)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:147)
	at org.spockframework.compiler.Barb.barb(Barb.groovy:28)
	at org.spockframework.compiler.Barb$barb.call(Unknown Source)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:117)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:121)
	at org.spockframework.compiler.Barb.main(Barb.groovy:24)