On Wed, Sep 19, 2007 at 10:24:24PM +0100, Neil Mitchell wrote:
Hi Peter,
So I grabbed ghc-6.7.20070824 (=the latest one for Windows I could find) and the "extra-libs", compiled and installed the GLUT package (which I needed), but when I compile my library, I get
Could not find module `Data.Map': it is a member of package containers-0.1, which is hidden
All dependencies etc. have changed when going to 6.7/6.8 - you are probably better off using 6.6.1 for now.
I also don't think that the debugger will help you track down infinite loop style errors. You might be better off posting the code and asking for help.
You said 0% CPU. That's *very* important. It means that you are using the threaded runtime (GHCi?), and that you triggered a blackhole. You should be able to handle this by compiling your program with -prof (do *not* use -threaded!), and running with +RTS -xc. With luck, that will give you a backtrace to the infinite loop. PS. blackholes are a serious dark corner of GHC's execution model, chances are better than even that if you try to use the debugger for this you will discover a new and (for you) crippling bug. I wouldn't recommend it. Stefan