Try running the program with the ghci debugger and -fbreak-on-errorhttp://www.haskell.org/ghc/docs/7.6.2/html/users_guide/ghci-debugger.html#gh... . On Wed, Sep 25, 2013 at 5:57 PM, Nathan Hüsken wrote:

Hey,

I have a program, that, when I run it fails with: Main: Prelude.tail: empty list

Can I somehow find out which exat instance of tail causes this error? I tried compiling with -prof and running with +RTX -xc, which gives me:

*** Exception (reporting due to +RTS -xc): (THUNK_2_0), stack trace: GHC.List.CAF --> evaluated by: SYSTEM.SYSTEM *** Exception (reporting due to +RTS -xc): (THUNK_2_0), stack trace: GHC.List.CAF *** Exception (reporting due to +RTS -xc): (THUNK_2_0), stack trace: GHC.List.CAF

Does not really help me ...

Thanks! Nathan ______________________________**_________________ Beginners mailing list Beginners@haskell.org http://www.haskell.org/**mailman/listinfo/beginnershttp://www.haskell.org/mailman/listinfo/beginners