--- a/tools/pas2c/Pas2C.hs	Fri Oct 05 21:04:19 2018 +0200
+++ b/tools/pas2c/Pas2C.hs	Fri Oct 05 21:30:06 2018 +0200
@@ -698,12 +698,16 @@
          (Identifier "LongInt" _) -> int (-2^31)
          (Identifier "SmallInt" _) -> int (-2^15)
          _ -> error $ "BuiltInFunction 'low': " ++ show e
-initExpr2C' (BuiltInFunction "high" [e]) = do
+initExpr2C' hi@(BuiltInFunction "high" [e@(InitReference e')]) = do
     void $ initExpr2C e
     t <- gets lastType
     case t of
          (BTArray i _ _) -> initExpr2C' $ BuiltInFunction "pred" [InitRange i]
-         a -> error $ "BuiltInFunction 'high': " ++ show a
+         BTInt _ -> case e' of
+                  (Identifier "LongInt" _) -> return $ int (2147483647)
+                  (Identifier "LongWord" _) -> return $ text "4294967295"
+                  _ -> error $ "BuiltInFunction 'high' in initExpr: " ++ show e'
+         a -> error $ "BuiltInFunction 'high' in initExpr: " ++ show a ++ ": " ++ show hi
 initExpr2C' (BuiltInFunction "succ" [BuiltInFunction "pred" [e]]) = initExpr2C' e
 initExpr2C' (BuiltInFunction "pred" [BuiltInFunction "succ" [e]]) = initExpr2C' e
 initExpr2C' (BuiltInFunction "succ" [e]) = liftM (<> text " + 1") $ initExpr2C' e