bug: Unknown source position when using lambda in inner class

[aveuiller]

Hello,

I have a quite weird behavior in my processor when analyzing this class: https://github.com/woffs/tazapp-android/blob/master/tazapp/src/main/java/de/thecode/android/tazreader/reader/usertoc/UserTocAdapter.java#L180-L191

I tracked down the bug to this minimal code sample:

public class Test {
    public static class Failing {
        Any listener;
    }

    private static class ExtendedClass extends Failing {
        public void test() { 
           // The difference in behaviour happens if I comment this line out
           Runnable r = v -> listener.someAction();
        }
    }
}

Here, the class Failing will have a position returning (uknown file) in my processor if the line with the lambda stays uncommented.
My processor will work fine if I comment it out though.

You will find as follow the configuration of my spoon launcher:

        Launcher launcher = new Launcher();

        launcher.addInputResource(appPath);
        launcher.getEnvironment().setNoClasspath(true);
        launcher.buildModel();

        AbstractProcessor<CtClass> classProcessor = new ClassProcessor();
        AbstractProcessor<CtInterface> interfaceProcessor = new InterfaceProcessor();
        launcher.addProcessor(classProcessor);
        launcher.addProcessor(interfaceProcessor);
        launcher.process();

And I will also attach the two states from my debugger.
Do you have an idea of the issue? Anything I can do about it?

Thanks in advance.

[monperrus]

Good to see you Antoine. AFAIU, your problem is that you have an empty position?

[aveuiller]

Hello Martin,

You are correct. In my processor, I am using the position attribute to store the path to the file holding the processed class, but in this case I am not able to retrieve it.

By the way, I forgot to mention but I'm using the version 7.4.0.

[monperrus]

So this is a bug. Would you create a pull-request with a failing test case? Thanks!

[aveuiller]

A reproduction of the bug is available in #3054