Got internal error: stg_ap_v_ret when call forkProcess

For recur this bug, you need install gtk2hs, dbus-core, dbus-client first.

Then use below command to compile:

ghc --make -threaded Main.hs

Then run ./Main in terminal, and press key "c" in program, then it will create new tab in program.

For recur this bug, you need press "c" sometimes (4 or 5 at least), then you will got below error:

***************
Debug-> in socket process (before `forkProcess`): 

Main: internal error: stg_ap_v_ret
    (GHC version 6.12.1 for x86_64_unknown_linux)
    Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

I have test, this bug just happen when i call function forkProcess.

You can get source code from attach.

-- Andy