[Haskell] Weird field name mangling.

[Simon Peyton-Jones]

[Redirecting to ghc-bugs]

That's a bug in 6.4.1 thank you.  The reason has to do with z-encoding strings in case they are output to C-land.

Happily the bug is not present in 6.6; I doubt we'll fix 6.4.1 now.

I've added a test to make sure it does not creep back: drvrun022

Simon


| -----Original Message-----
| From: haskell-bounces at haskell.org [mailto:haskell-bounces at haskell.org] On Behalf Of Arthur van
| Leeuwen
| Sent: 22 November 2006 16:59
| To: haskell at haskell.org
| Subject: [Haskell] Weird field name mangling.
|
| L.S.,
|
| consider the following code:
|
|  > module TestZ where
|  >
|  > import Data.Generics
|  >
|  > data TestZ = TestZ { testz :: Int }
|  >              deriving (Show, Read, Eq, Typeable, Data)
|  >
|  > main = print $ constrFields . toConstr $ TestZ { testz = 2 }
|
| I would expect this to output ["testz"]. Instead it outputs ["testzz"],
| using GHCi 6.4.1. Why is that z doubled?
|
| Doei, Arthur.
|
| --
|
|    /\    / |       arthurvl at cs.uu.nl       | Work like you don't need
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