println in fiber: java.lang.IllegalArgumentException: wrong number of arguments

[puniverse]

println in fiber: java.lang.IllegalArgumentException: wrong number of arguments

[dehubbed]

The above only happens in nrepl (via Eclipse). Seems nrepl is somehow getting in the way. Strange. Someone had a similar problem: https://groups.google.com/forum/#!topic/quasar-pulsar-user/TkgWpuIiI80

However can't just blame it on nrepl, it all works with "future-call" instead of spawn-fiber.

[circlespainter]

Yes, I just tried with a lein run (with a main method) and lein repl and they work ok. Not an expert of nrepl w/ Eclipse, is the Quasar agent running ok? If everything seems regular, could you please try 0.6.3-SNAPSHOT as well?

[dehubbed]

sure give me 1 hr

[dehubbed]

0.6.3-SNAPSHOT is not on clojars, is it? should I clone the repo and build it?

[dehubbed]

ok I cloned & compiled, same issue. I or anyone can make do without the Eclipse nrepl for sure, however it is a bit worrying that there should be subtle interactions like that.

[dehubbed]

using clojure.tools.logging (via slf4j and log4j) and doing (debug "test") instead of (println "test") works. even though debug uses println somewhere down in its guts. ah well.

[circlespainter]

I just installed Eclipse Luna for Java + CCW and I'm trying hard to reproduce it but I'm not able to, maybe I'm doing something wrong.

I'm on JDK 1.8.0_25, Mac OS X Yosemite, I tried creating a Leiningen project with Quasar/Pulsar setup, then I right-clicked it and "Leiningen/Launch Headless REPL for the project", finally in the REPL I pasted your snippet but I get "nil" as a return value and "test" in stdout without any exceptions.

Should I do something else?

[dehubbed]

I'm on Ubuntu JDK 1.7. I don't have a Mac here but I can try JDK 1.8 later today.

[dehubbed]

Just tried JDK 8, same thing. No idea how to reproduce this any other way. I think you can close this issue. I could reopen it should I come across further clues.

[circlespainter]

Are the steps I'm following to reproduce it right? Are you doing the same things?

[dehubbed]

Yes, the step are right and you are doing the same thing, other than my OS being Ubuntu which should hardly matter. Counterclockwise version is 0.31.1?

Can I send you a tgz file somehow with my bare bones Eclipse project in it that you can run unzip and run?

[dehubbed]

File here: https://mega.co.nz/#!us8gFLBB!1CQ7JOp8F1HEoyOVJI2dM4AsRMMSgRSjPtT9-zAfrU4

[dehubbed]

There is an Eclipse launch configuration in that package, that's what I use to launch it.

[circlespainter]

Thanks, I'll have a look ASAP.

[circlespainter]

Yes, CCW is 0.31.1.STABLE001.
Tried with your project and launch config (I adjusted just the path to Quasar's agent to use my home), connected to it with lein repl :connect, copied and pasted your borked.clj test content and still I get no exception.
Have you got a chance to try on some other machine / setup?

[dehubbed]

Will do.

[dehubbed]

Yes I tried a different machine and everything works completely fine. Up to me now to figure out what the crucial difference is! =8-O I'll keep you posted.

[dehubbed]

btw related to this? #29

[circlespainter]

I won't rule it out completely but I think it's unlikely as that issue was reproducible everywhere, every time and you're trying (or have tried already) with pulsar 0.6.3 which contains a fix for it.

[circlespainter]

I'll close it for now, if more info will be available about reproducing it we can always reopen it.