[Pharo-dev] Compiling a method with a new iv raises DNU

[stepharo]

Here is the scenario

 I added the method
    comment

            ^ comment

and I get now a DNU

    doSemanticAnalysisIn:


at: aCompiledMethod
    ^ self
        at: aCompiledMethod
        ifAbsentPut: [
            aCompiledMethod parseTree doSemanticAnalysisIn: 
aCompiledMethod methodClass ]


where aCompiledMethod is StoreBlessing>>#comment

but the parseTree is nil :(

How this behavior can happen?

Stef