diff options
Diffstat (limited to 'libraries/base/GHC/MVar.hs')
-rw-r--r-- | libraries/base/GHC/MVar.hs | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/libraries/base/GHC/MVar.hs b/libraries/base/GHC/MVar.hs index a5054cc8fe..911c024128 100644 --- a/libraries/base/GHC/MVar.hs +++ b/libraries/base/GHC/MVar.hs @@ -1,5 +1,5 @@ {-# LANGUAGE Unsafe #-} -{-# LANGUAGE NoImplicitPrelude, MagicHash, UnboxedTuples, AutoDeriveTypeable #-} +{-# LANGUAGE NoImplicitPrelude, MagicHash, UnboxedTuples #-} {-# OPTIONS_GHC -funbox-strict-fields #-} {-# OPTIONS_HADDOCK hide #-} @@ -33,9 +33,8 @@ module GHC.MVar ( ) where import GHC.Base -import Data.Typeable -data MVar a = MVar (MVar# RealWorld a) deriving( Typeable ) +data MVar a = MVar (MVar# RealWorld a) {- ^ An 'MVar' (pronounced \"em-var\") is a synchronising variable, used for communication between concurrent threads. It can be thought of |