X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2FdeSugar%2FCheck.lhs;h=d9aefbea222e304521fa85f5bbdd4447769f2387;hp=cc00536e85aebd21a7e7a97600ef7281053b2d18;hb=6ddfe9b18d4d280676aab2fa797ddbe6f8a09d6b;hpb=ca53c38335cdc671f0b1e0949aa1514fc3fd72a5

diff --git a/compiler/deSugar/Check.lhs b/compiler/deSugar/Check.lhs
index cc00536..d9aefbe 100644
--- a/compiler/deSugar/Check.lhs
+++ b/compiler/deSugar/Check.lhs
@@ -30,6 +30,7 @@ import Type
 import SrcLoc
 import UniqSet
 import Util
+import BasicTypes
 import Outputable
 import FastString
 \end{code}
@@ -436,14 +437,14 @@ get_lit :: Pat id -> Maybe HsLit
 -- It doesn't matter which one, because they will only be compared
 -- with other HsLits gotten in the same way
 get_lit (LitPat lit)				          = Just lit
-get_lit (NPat (OverLit { ol_val = HsIntegral i})    mb _) = Just (HsIntPrim   (mb_neg mb i))
-get_lit (NPat (OverLit { ol_val = HsFractional f }) mb _) = Just (HsFloatPrim (mb_neg mb f))
+get_lit (NPat (OverLit { ol_val = HsIntegral i})    mb _) = Just (HsIntPrim   (mb_neg negate              mb i))
+get_lit (NPat (OverLit { ol_val = HsFractional f }) mb _) = Just (HsFloatPrim (mb_neg negateFractionalLit mb f))
 get_lit (NPat (OverLit { ol_val = HsIsString s })   _  _) = Just (HsStringPrim s)
 get_lit _                                	          = Nothing
 
-mb_neg :: Num a => Maybe b -> a -> a
-mb_neg Nothing  v = v
-mb_neg (Just _) v = -v
+mb_neg :: (a -> a) -> Maybe b -> a -> a
+mb_neg _      Nothing  v = v
+mb_neg negate (Just _) v = negate v
 
 get_unused_cons :: [Pat Id] -> [DataCon]
 get_unused_cons used_cons = ASSERT( not (null used_cons) ) unused_cons