X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2FsimplCore%2FSimplify.lhs;h=f477038f5d69b3574a262c09608838f70b5af7e6;hb=29e736b7089d535b53e3f02ef04d36331921e42a;hp=e2435c251d6f69d17db12cfa457e738eff30a67d;hpb=8c9cfd756219ed60ebcdf5cd370a3d083fd7e4b8;p=ghc-hetmet.git

diff --git a/compiler/simplCore/Simplify.lhs b/compiler/simplCore/Simplify.lhs
index e2435c2..f477038 100644
--- a/compiler/simplCore/Simplify.lhs
+++ b/compiler/simplCore/Simplify.lhs
@@ -45,7 +45,7 @@ import CoreUtils	( exprIsDupable, exprIsTrivial, needsCaseBinding,
 			  exprType, exprIsHNF, findDefault, mergeAlts,
 			  exprOkForSpeculation, exprArity, 
 			  mkCoerce, mkSCC, mkInlineMe, applyTypeToArg,
-                          dataConInstPat
+                          dataConRepInstPat
 			)
 import Rules		( lookupRule )
 import BasicTypes	( isMarkedStrict )
@@ -1553,7 +1553,10 @@ simplDefault env case_bndr' imposs_cons cont (Just rhs)
 
 	[con] -> 	-- It matches exactly one constructor, so fill it in
 		 do { tick (FillInCaseDefault case_bndr')
-		    ; con_alt <- mkDataConAlt con inst_tys rhs
+                    ; us <- getUniquesSmpl
+                    ; let (ex_tvs, co_tvs, arg_ids) =
+                              dataConRepInstPat us con inst_tys
+                    ; let con_alt = (DataAlt con, ex_tvs ++ co_tvs ++ arg_ids, rhs)
 		    ; Just (_, alt') <- simplAlt env [] case_bndr' cont con_alt
 			-- The simplAlt must succeed with Just because we have
 			-- already filtered out construtors that can't match