StackOverflowError in JDTTreeBuilder.ReferenceBuilder.getTypeReference()

[Andy1605]

Hi there,

I was recently experiencing a strange behavior of the ReferenceBuilder in JDTTreeBuilder when i tried to convert this class:

public class EnumValue  {

    public EnumValue() 
    {
    }

    //...

    public <T extends Enum<T>> T asEnum() //StackOverflow when referenced
    {        
        return null;
    }

    public Object unwrap()
    {
      return asEnum();
    }
}

As soon as i have a reference to the method public <T extends Enum<T>> T asEnum() as seen in the unwrap() method, i get a StackOverflow error in getTypeReference() due to a infinite recursion.
I am using the stable Version 4.4.0 of spoon.

Here is the stack trace (which wont be very useful i suppose):
Exception in thread "main" java.lang.StackOverflowError
at spoon.reflect.factory.FactoryImpl.dedup(FactoryImpl.java:310)
at spoon.support.reflect.reference.CtReferenceImpl.setSimpleName(CtReferenceImpl.java:75)
at spoon.support.compiler.jdt.JDTTreeBuilder$ReferenceBuilder.getTypeReference(JDTTreeBuilder.java:486)
at spoon.support.compiler.jdt.JDTTreeBuilder$ReferenceBuilder.getTypeReference(JDTTreeBuilder.java:562)
at spoon.support.compiler.jdt.JDTTreeBuilder$ReferenceBuilder.getTypeReference(JDTTreeBuilder.java:501)
at spoon.support.compiler.jdt.JDTTreeBuilder$ReferenceBuilder.getTypeReference(JDTTreeBuilder.java:562)
at spoon.support.compiler.jdt.JDTTreeBuilder$ReferenceBuilder.getTypeReference(JDTTreeBuilder.java:501)
at spoon.support.compiler.jdt.JDTTreeBuilder$ReferenceBuilder.getTypeReference(JDTTreeBuilder.java:562)
at spoon.support.compiler.jdt.JDTTreeBuilder$ReferenceBuilder.getTypeReference(JDTTreeBuilder.java:501)
at spoon.support.compiler.jdt.JDTTreeBuilder$ReferenceBuilder.getTypeReference(JDTTreeBuilder.java:562)
at spoon.support.compiler.jdt.JDTTreeBuilder$ReferenceBuilder.getTypeReference(JDTTreeBuilder.java:501)
at spoon.support.compiler.jdt.JDTTreeBuilder$ReferenceBuilder.getTypeReference(JDTTreeBuilder.java:562)
at spoon.support.compiler.jdt.JDTTreeBuilder$ReferenceBuilder.getTypeReference(JDTTreeBuilder.java:501)
at spoon.support.compiler.jdt.JDTTreeBuilder$ReferenceBuilder.getTypeReference(JDTTreeBuilder.java:562)
at spoon.support.compiler.jdt.JDTTreeBuilder$ReferenceBuilder.getTypeReference(JDTTreeBuilder.java:501)
at spoon.support.compiler.jdt.JDTTreeBuilder$ReferenceBuilder.getTypeReference(JDTTreeBuilder.java:562)
....

Sincerely,
Andreas

[GerardPaligot]

Hi @Andy1605,

Thanks for your report. It is weird because we have already encountered this problem and we have a test case about it here.

I'll check your issue soon and I'll come back to you to give you a feedback!

[GerardPaligot]

The bug is confirmed and the PR is done here.

[GerardPaligot]

The version 4.4.1 is on the way for Maven Central and contains this bug fix.