GMaven generates incorrect stubs where groovyc generates correct stubs

Stub generation with groovyc:
-----------------------------

Compile with:

cd src/main/groovy
groovyc -j ../java/foo/*.java bar/*.groovy

AST representation of annotation attribute value:

org.codehaus.groovy.ast.expr.PropertyExpression@4cdf4bfc[object: org.codehaus.groovy.ast.expr.ClassExpression@57f5b4d1[type: foo.MyEnum] property: ConstantExpression[ONE]]

Stack trace at point of generation of annotation attribute value:

	  at org.codehaus.groovy.tools.javac.JavaStubGenerator.getAnnotationValue(JavaStubGenerator.java:641)
	  at org.codehaus.groovy.tools.javac.JavaStubGenerator.printAnnotations(JavaStubGenerator.java:634)
	  at org.codehaus.groovy.tools.javac.JavaStubGenerator.genClassInner(JavaStubGenerator.java:169)
	  at org.codehaus.groovy.tools.javac.JavaStubGenerator.generateClass(JavaStubGenerator.java:105)
	  at org.codehaus.groovy.tools.javac.JavaAwareCompilationUnit$2.call(JavaAwareCompilationUnit.java:75)
	  at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:932)
	  at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:509)
	  at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:487)
	  at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:464)
	  at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:448)
	  at org.codehaus.groovy.tools.FileSystemCompiler.compile(FileSystemCompiler.java:57)
	  at org.codehaus.groovy.tools.FileSystemCompiler.doCompilation(FileSystemCompiler.java:170)
	  at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompile(FileSystemCompiler.java:138)
	  at org.codehaus.groovy.tools.FileSystemCompiler.main(FileSystemCompiler.java:152)
	  at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-1)
	  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	  at java.lang.reflect.Method.invoke(Method.java:597)
	  at org.codehaus.groovy.tools.GroovyStarter.rootLoader(GroovyStarter.java:108)
	  at org.codehaus.groovy.tools.GroovyStarter.main(GroovyStarter.java:130)       
	  
 
Stub generation with GMaven:   
--------------------------------  

Compile with:

mvn clean install

AST representation of annotation attribute value:

org.codehaus.groovy.ast.expr.PropertyExpression@65f4ba51[object: org.codehaus.groovy.ast.expr.VariableExpression@25f45022[variable: MyEnum] property: ConstantExpression[ONE]]
	  
Stack trace at point of generation of annotation attribute value:

      	  at org.codehaus.groovy.tools.javac.JavaStubGenerator.getAnnotationValue(JavaStubGenerator.java:641)
      	  at org.codehaus.groovy.tools.javac.JavaStubGenerator.printAnnotations(JavaStubGenerator.java:634)
      	  at org.codehaus.groovy.tools.javac.JavaStubGenerator.genClassInner(JavaStubGenerator.java:169)
      	  at org.codehaus.groovy.tools.javac.JavaStubGenerator.generateClass(JavaStubGenerator.java:105)
      	  at org.codehaus.gmaven.runtime.v1_7.JavaStubCompilationUnit$2.call(JavaStubCompilationUnit.java:78)
      	  at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:932)
      	  at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:509)
      	  at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:487)
      	  at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:464)
      	  at org.codehaus.gmaven.runtime.v1_7.JavaStubCompilationUnit.compile(JavaStubCompilationUnit.java:112)
      	  at org.codehaus.gmaven.runtime.v1_7.StubCompilerFeature$StubCompilerImpl.compile(StubCompilerFeature.java:107)
      	  at org.codehaus.gmaven.plugin.stubgen.AbstractGenerateStubsMojo.compile(AbstractGenerateStubsMojo.java:160)
      	  at org.codehaus.gmaven.plugin.stubgen.AbstractGenerateStubsMojo.process(AbstractGenerateStubsMojo.java:131)
      	  at org.codehaus.gmaven.plugin.ComponentMojoSupport.doExecute(ComponentMojoSupport.java:60)
      	  at org.codehaus.gmaven.plugin.MojoSupport.execute(MojoSupport.java:69)
      	  at org.codehaus.gmaven.plugin.stubgen.AbstractGenerateStubsMojo.execute(AbstractGenerateStubsMojo.java:60)
      	  at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
      	  at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
      	  at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:556)
      	  at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:535)
      	  at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
      	  at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
      	  at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
      	  at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
      	  at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
      	  at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
      	  at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
      	  at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-1)
      	  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      	  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      	  at java.lang.reflect.Method.invoke(Method.java:597)
      	  at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
      	  at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
      	  at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
      	  at org.codehaus.classworlds.Launcher.main(Launcher.java:375)