[haddock @ 2005-01-16 14:14:39 by panne]

Data.Map.unions is left-biased.

2 files changed, 2 insertions, 2 deletions

diff --git a/src/Main.hs b/src/Main.hs
index a83376f3..fcac054b 100644
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -828,7 +828,7 @@ buildOrigEnv :: Module -> Bool -> ModuleMap -> [HsImportDecl]
    -> ErrMsgM (Map HsQName HsQName)
 buildOrigEnv this_mdl verbose mod_map imp_decls
   = do maps <- mapM build imp_decls
-       return (Map.unions maps)
+       return (Map.unions (reverse maps))
   where
   build imp_decl@(HsImportDecl _ mdl qual maybe_as _)
     = case Map.lookup mdl mod_map of
diff --git a/src/Map.hs b/src/Map.hs
index 64d28df0..16cebdee 100644
--- a/src/Map.hs
+++ b/src/Map.hs
@@ -47,7 +47,7 @@ unionWith :: Ord k => (a -> a -> a) -> Map k a -> Map k a -> Map k a
 unionWith c l r = plusFM_C c r l
 
 unions :: Ord k => [Map k a] -> Map k a
-unions = foldr plusFM emptyFM
+unions = foldl (flip plusFM) emptyFM
 
 elems :: Map k a -> [a]
 elems = eltsFM