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

Simon Peyton-Jones simonpj at microsoft.com
Thu Nov 12 04:07:39 EST 2009

| [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.



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