<<loop>> in GHC 5.01 "Zarjaz"

[Julian Seward (Intl Vendor)]

Is now fixed.  Thx for the report.  Was due to a bug in
the interpreter's code generator pertaining to spotting
nullary top-level constructors (was fooled by the tyvar
on S).  This fix will ship in 5.02.

J

| -----Original Message-----
| From: Mark Tehver [mailto:mark at eeter.fi.tartu.ee] 
| Sent: Thursday, July 19, 2001 11:03 PM
| To: glasgow-haskell-bugs at haskell.org
| Subject: <<loop>> in GHC 5.01 "Zarjaz"
| 
| 
| Hi,
| 
|   The following code gives *** Exception: <<loop>> when I 
| execute main under ghci (using GHC 5.01 "Zarjaz"):
| 
| ---- file Y.hs
| 
| module Y (test, T) where
| 
| data T k = T | S k deriving Show
| 
| test :: T k
| test = T
| 
| ---- file Main.hs
| 
| module Main (main) where
| 
| import Y
| 
| main :: IO ()
| main = putStrLn $ show (test :: T Int)
| 
| 
| But it works fine when I compile this program into 
| stand-alone executable using the same compiler. It also 
| worked under Linux when I used GHC 5.00 with interpreter.
| 
| Best regards,
| Mark
| 
| 
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