Nit with 6.2.1

[Wolfgang Thaller]

Gregory Wright wrote:

>
> Hi,
>
> I built 6.2.1 on Mac OS X 10.3.3 from source with OpenGL support.
>
> I built the Cube.hs demo program and it compiles and runs fine, but if 
> I
> terminate it with crtl-C instead of hitting "q" in the OpenGL window, 
> I get
> the error message
>
> > ./Cube
> ^CCube: internal error: unblockThread
>     Please report this as a bug to glasgow-haskell-bugs at haskell.org,
>     or http://www.sourceforge.net/projects/ghc/
>
> (Hitting "q" in the OpenGL display window causes graceful termination.)

Confirmed, thanks for the report. I will look into this when I have 
some time.

Note that the problem goes away when you comile the program with 
-threaded.

Cheers,

Wolfgang