X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Fvectorise%2FVectUtils.hs;h=533a8e769409987e37ee088e1d5642c0df1ffc43;hp=5c099c0fd306f0277d763f2380eb75050b82926a;hb=9fd454ab395b70946928ed92c3cb7b28a4d036bc;hpb=6029a9e18cfd5f510e2db3bb1fbfcc10f31146e0

diff --git a/compiler/vectorise/VectUtils.hs b/compiler/vectorise/VectUtils.hs
index 5c099c0..533a8e7 100644
--- a/compiler/vectorise/VectUtils.hs
+++ b/compiler/vectorise/VectUtils.hs
@@ -451,6 +451,11 @@ mkLiftEnv lc [ty] [v]
 mkLiftEnv lc tys vs
   = do
       (env_tc, env_tyargs) <- parrayReprTyCon vty
+
+      bndrs <- if null vs then do
+                                 v <- newDummyVar unitTy
+                                 return [v]
+                          else return vs
       let [env_con] = tyConDataCons env_tc
           
           env = Var (dataConWrapId env_con)
@@ -469,6 +474,3 @@ mkLiftEnv lc tys vs
     args  | null vs   = [Var unitDataConId]
           | otherwise = map Var vs
 
-    bndrs | null vs   = [mkWildId unitTy]
-          | otherwise = vs
-