add -fsimpleopt-before-flatten

[ghc-hetmet.git] / compiler / typecheck / TcArrows.lhs

diff --git a/compiler/typecheck/TcArrows.lhs b/compiler/typecheck/TcArrows.lhs
index 53b3c97..ae4a1e8 100644 (file)
--- a/compiler/typecheck/TcArrows.lhs
+++ b/compiler/typecheck/TcArrows.lhs
@@ -237,7 +237,7 @@ tc_cmd env cmd@(HsDo do_or_lc stmts body _ty) (cmd_stk, res_ty)
 tc_cmd env cmd@(HsArrForm expr fixity cmd_args) (cmd_stk, res_ty)      
   = addErrCtxt (cmdCtxt cmd)   $
     do { cmds_w_tys <- zipWithM new_cmd_ty cmd_args [1..]
-       ; [w_tv]     <- tcInstSkolTyVars ArrowSkol [alphaTyVar]
+        ; [w_tv]     <- tcInstSkolTyVars [alphaTyVar]
        ; let w_ty = mkTyVarTy w_tv     -- Just a convenient starting point
 
                --  a ((w,t1) .. tn) t