TH bug

[Simon Peyton-Jones]

Yes, pattern brackets are not supported yet.  They are very tricky. (The
manual doesn't mention them.)

I'll improve the error message though!

S

| -----Original Message-----
| From: glasgow-haskell-bugs-bounces at haskell.org
[mailto:glasgow-haskell-bugs-
| bounces at haskell.org] On Behalf Of Bulat Ziganshin
| Sent: 20 January 2006 11:00
| To: glasgow-haskell-bugs at haskell.org
| Cc: Simon Peyton-Jones
| Subject: TH bug
| 
| Hello ,
| 
| attempt to compile this module:
| 
| {-# OPTIONS_GHC -fglasgow-exts -fth #-}
| import Language.Haskell.TH
| f = match [p|0|] [|return ()|] []
| 
| 
| produce the following error:
| 
| ghc.EXE: panic! (the `impossible' happened, GHC version 6.4.1):
|         typecheck/TcSplice.lhs:(128,0)-(150,44): Non-exhaustive
patterns in function tc_bracket
| 
| 
| Please report it as a compiler bug to
glasgow-haskell-bugs at haskell.org,
| or http://sourceforge.net/projects/ghc/.
| 
| 
| 
| 
| --
| Best regards,
|  Bulat                          mailto:bulatz at HotPOP.com
| 
| 
| 
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