Add LANGUAGE BangPatterns to modules that use them

[ghc-hetmet.git] / compiler / utils / FastMutInt.lhs

diff --git a/compiler/utils/FastMutInt.lhs b/compiler/utils/FastMutInt.lhs
index e8ea58c..61e3e85 100644 (file)
--- a/compiler/utils/FastMutInt.lhs
+++ b/compiler/utils/FastMutInt.lhs
@@ -1,4 +1,5 @@
 \begin{code}
+{-# LANGUAGE BangPatterns #-}
 {-# OPTIONS -cpp #-}
 {-# OPTIONS_GHC -O #-}
 -- We always optimise this, otherwise performance of a non-optimised
@@ -19,15 +20,20 @@ module FastMutInt(
 
 #ifdef __GLASGOW_HASKELL__
 
-#include "MachDeps.h"
+#include "../includes/MachDeps.h"
 #ifndef SIZEOF_HSINT
 #define SIZEOF_HSINT  INT_SIZE_IN_BYTES
 #endif
 
 import GHC.Base
-import GHC.IOBase
 import GHC.Ptr
 
+#if __GLASGOW_HASKELL__ >= 611
+-- import GHC.IO ( IO(..) )
+#else
+import GHC.IOBase ( IO(..) )
+#endif
+
 #else /* ! __GLASGOW_HASKELL__ */
 
 import Data.IORef
@@ -50,7 +56,7 @@ data FastMutInt = FastMutInt (MutableByteArray# RealWorld)
 newFastMutInt = IO $ \s ->
   case newByteArray# size s of { (# s, arr #) ->
   (# s, FastMutInt arr #) }
-  where I# size = SIZEOF_HSINT
+  where !(I# size) = SIZEOF_HSINT
 
 readFastMutInt (FastMutInt arr) = IO $ \s ->
   case readIntArray# arr 0# s of { (# s, i #) ->
@@ -65,7 +71,7 @@ data FastMutPtr = FastMutPtr (MutableByteArray# RealWorld)
 newFastMutPtr = IO $ \s ->
   case newByteArray# size s of { (# s, arr #) ->
   (# s, FastMutPtr arr #) }
-  where I# size = SIZEOF_VOID_P
+  where !(I# size) = SIZEOF_VOID_P
 
 readFastMutPtr (FastMutPtr arr) = IO $ \s ->
   case readAddrArray# arr 0# s of { (# s, i #) ->