X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2FbasicTypes%2FUniqSupply.lhs;h=c228eeb5708740740059a5850a1d3383c8d5f2d2;hb=3ad311341e189e574139921bd98449d7aed9ba26;hp=8dcf595da004124b75fbee654b2b0da9c2aede9a;hpb=3a42f21026077b8b497852ff53288818a28883d2;p=ghc-hetmet.git

diff --git a/compiler/basicTypes/UniqSupply.lhs b/compiler/basicTypes/UniqSupply.lhs
index 8dcf595..c228eeb 100644
--- a/compiler/basicTypes/UniqSupply.lhs
+++ b/compiler/basicTypes/UniqSupply.lhs
@@ -4,6 +4,13 @@
 %
 
 \begin{code}
+{-# OPTIONS -w #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and fix
+-- any warnings in the module. See
+--     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
+-- for details
+
 module UniqSupply (
 
 	UniqSupply,		-- Abstractly
@@ -28,6 +35,13 @@ import Unique
 import GHC.Exts
 import System.IO.Unsafe	( unsafeInterleaveIO )
 
+#if __GLASGOW_HASKELL__ >= 607
+import GHC.IOBase (unsafeDupableInterleaveIO)
+#else
+unsafeDupableInterleaveIO :: IO a -> IO a
+unsafeDupableInterleaveIO = unsafeInterleaveIO
+#endif
+
 w2i x = word2Int# x
 i2w x = int2Word# x
 i2w_s x = (x :: Int#)
@@ -69,7 +83,7 @@ mkSplitUniqSupply (C# c#)
 
 	-- This is one of the most hammered bits in the whole compiler
 	mk_supply#
-	  = unsafeInterleaveIO (
+	  = unsafeDupableInterleaveIO (
 		genSymZh    >>= \ (I# u#) ->
 		mk_supply#  >>= \ s1 ->
 		mk_supply#  >>= \ s2 ->