Don't export CLDouble for GHC; fixes trac #2793

[ghc-base.git] / Foreign / C / Types.hs

diff --git a/Foreign/C/Types.hs b/Foreign/C/Types.hs
index c5c3745..798c899 100644 (file)
--- a/Foreign/C/Types.hs
+++ b/Foreign/C/Types.hs
@@ -1,4 +1,7 @@
 {-# OPTIONS_GHC -XNoImplicitPrelude #-}
+{-# OPTIONS_GHC -fno-warn-unused-binds #-}
+-- XXX -fno-warn-unused-binds stops us warning about unused constructors,
+-- but really we should just remove them if we don't want them
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  Foreign.C.Types
@@ -47,7 +50,11 @@ module Foreign.C.Types
           -- 'Prelude.Show', 'Prelude.Enum', 'Typeable', 'Storable',
           -- 'Prelude.Real', 'Prelude.Fractional', 'Prelude.Floating',
           -- 'Prelude.RealFrac' and 'Prelude.RealFloat'.
-        , CFloat,  CDouble, CLDouble
+        , CFloat,  CDouble
+-- GHC doesn't support CLDouble yet
+#ifndef __GLASGOW_HASKELL__
+        , CLDouble
+#endif
 #else
           -- Exported non-abstractly in nhc98 to fix an interface file problem.
           CChar(..),    CSChar(..),  CUChar(..)
@@ -66,11 +73,11 @@ module Foreign.C.Types
 
 #ifndef __NHC__
 
-import {-# SOURCE #-} Foreign.Storable
+import Foreign.Storable
 import Data.Bits        ( Bits(..) )
 import Data.Int         ( Int8,  Int16,  Int32,  Int64  )
 import Data.Word        ( Word8, Word16, Word32, Word64 )
-import {-# SOURCE #-} Data.Typeable
+import {-# SOURCE #-} Data.Typeable (Typeable(typeOf), TyCon, mkTyCon, mkTyConApp)
 
 #ifdef __GLASGOW_HASKELL__
 import GHC.Base
@@ -148,20 +155,25 @@ INTEGRAL_TYPE(CULLong,tyConCULLong,"CULLong",HTYPE_UNSIGNED_LONG_LONG)
 FLOATING_TYPE(CFloat,tyConCFloat,"CFloat",HTYPE_FLOAT)
 -- | Haskell type representing the C @double@ type.
 FLOATING_TYPE(CDouble,tyConCDouble,"CDouble",HTYPE_DOUBLE)
+-- GHC doesn't support CLDouble yet
+#ifndef __GLASGOW_HASKELL__
 -- HACK: Currently no long double in the FFI, so we simply re-use double
 -- | Haskell type representing the C @long double@ type.
 FLOATING_TYPE(CLDouble,tyConCLDouble,"CLDouble",HTYPE_DOUBLE)
+#endif
 
 {-# RULES
 "realToFrac/a->CFloat"    realToFrac = \x -> CFloat   (realToFrac x)
 "realToFrac/a->CDouble"   realToFrac = \x -> CDouble  (realToFrac x)
-"realToFrac/a->CLDouble"  realToFrac = \x -> CLDouble (realToFrac x)
 
 "realToFrac/CFloat->a"    realToFrac = \(CFloat   x) -> realToFrac x
 "realToFrac/CDouble->a"   realToFrac = \(CDouble  x) -> realToFrac x
-"realToFrac/CLDouble->a"  realToFrac = \(CLDouble x) -> realToFrac x
  #-}
 
+-- GHC doesn't support CLDouble yet
+-- "realToFrac/a->CLDouble"  realToFrac = \x -> CLDouble (realToFrac x)
+-- "realToFrac/CLDouble->a"  realToFrac = \(CLDouble x) -> realToFrac x
+
 -- | Haskell type representing the C @ptrdiff_t@ type.
 INTEGRAL_TYPE(CPtrdiff,tyConCPtrdiff,"CPtrdiff",HTYPE_PTRDIFF_T)
 -- | Haskell type representing the C @size_t@ type.