[Haskell-cafe] The weirdest error I've ever seen...

[Joe Fredette]

Okay, so -- I feel totally awesome -- I never found a GHC bug  
before... and a Haskell Celebrity responded to my post! *swoons* :)

Serious question now, There's a fair amount of definitely irrelevant  
code (like the definition of the `Email` type, etc), should I post  
that in the report too (assuming it doesn't work in 6.12 or I can't  
get 6.12 working to try it)?

Thanks,

/Joe

On Nov 12, 2009, at 4:07 AM, Simon Peyton-Jones wrote:

> | [1 of 3] Compiling Network.HackMail.Email.ParseEmail ( Network/
> | HackMail/Email/ParseEmail.hs, interpreted )
> | [2 of 3] Compiling Network.HackMail.Email.Email ( Network/HackMail/
> | Email/Email.hs, interpreted )
> | [3 of 3] Compiling Network.HackMail.Filter.Filter ( Network/ 
> HackMail/
> | Filter/Filter.hs, interpreted )
> | *** Exception: No match in record selector Var.tcTyVarDetails
>
> This is a bug in GHC without a doubt.
>
> It's possible that it's fixed in 6.12 -- can you try the release  
> candidate?  If it is not fixed, or if it's too hard for you to try,  
> can you submit a Trac bug report please? (Include your code, and  
> instructions for how to reproduce.
>
> Thanks
>
> Simon