X-Git-Url: https://git.stderr.nl/gitweb?a=blobdiff_plain;f=c%CE%BBash%2FCLasH%2FVHDL%2FVHDLTools.hs;h=cff65a68606a0a508ff05d8e882dab2ac49a981a;hb=743f2dcf9a7a37c71fc06ce552f605fac3120e56;hp=e273da8bd3a9f26512389ea468cda228d2adcac8;hpb=a533335368e252544db4f68ee03e0e7b7255eae5;p=matthijs%2Fmaster-project%2Fc%CE%BBash.git

diff --git "a/c\316\273ash/CLasH/VHDL/VHDLTools.hs" "b/c\316\273ash/CLasH/VHDL/VHDLTools.hs"
index e273da8..cff65a6 100644
--- "a/c\316\273ash/CLasH/VHDL/VHDLTools.hs"
+++ "b/c\316\273ash/CLasH/VHDL/VHDLTools.hs"
@@ -290,7 +290,8 @@ vhdl_ty_either tything =
     Just ty -> vhdl_ty_either' ty
 
 vhdl_ty_either' :: Type.Type -> TypeSession (Either String (Maybe AST.TypeMark))
-vhdl_ty_either' ty = do
+vhdl_ty_either' ty | ty_has_free_tyvars ty = return $ Left $ "VHDLTools.vhdl_ty_either': Cannot create type: type has free type variables: " ++ pprString ty
+                   | otherwise = do
   typemap <- getA tsTypes
   htype_either <- mkHType ty
   case htype_either of