RE: bug (?) - unboxed tuples

On 14 January 2005 20:57, Daniel Fischer wrote:

> Hello,
> I recently read the following:
> dafis@linux:~/Documents/pi3/diverses/Mascheroni> ghci Exponent.hs
>    ___         ___ _
>   / _ \ /\  /\/ __(_)
>  / /_\// /_/ / /  | |      GHC Interactive, version 6.2, for Haskell
> 98. / /_\\/ __  / /___| |      http://www.haskell.org/ghc/
> \____/\/ /_/\____/|_|      Type :? for help.
> 
> Loading package base ... linking ... done.
> Skipping  TheLog           ( ./TheLog.hs, ./TheLog.o )
> Compiling Exponent         ( Exponent.hs, interpreted )
> ghc-6.2: panic! (the `impossible' happened, GHC version 6.2):
>         Bytecode generator can't handle unboxed tuples.  Possibly due
>         to foreign import/export decls in source.  Workaround:
>         compile this module to a .o file, then restart session.
> 
> The complete code of both modules is attached, as well as system
> information (I know not much about such things, so I can only hope
> that is helpful for you).
> 
> Compiling Exponent to a .o file did work, so there is no real problem.
> However, ghci said 'Please report it as a compiler bug', so I am
> doing it. Besides, there are no tuples at all in module Exponent,
> module TheLog, where there are a couple of tuples (are they unboxed
> though?) was compiled earlier, so I don't understand the message. If
> you could spare the time to explain (or give a source for an
> explanation), I would be even more grateful than I am anyway (such a
> wonderful thing as ghc FOR FREE!!). 

Could you send us the source?

Cheers,
        Simon