Cherry pick commit 14857 from 4.02.

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@15065 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
2014-08-07 09:40:07 +00:00 · 2014-08-07 09:40:07 +00:00 · fc7d8cfecc
parent 2c4b259f60
commit fc7d8cfecc
1 changed files with 1 additions and 1 deletions
--- a/parsing/ast_mapper.ml
+++ b/parsing/ast_mapper.ml
@ -629,7 +629,7 @@ let apply ~source ~target mapper =
  in
  if magic <> Config.ast_impl_magic_number
  && magic <> Config.ast_intf_magic_number then
-    failwith "Ast_mapper: unknown magic number";
+    failwith "Ast_mapper: OCaml version mismatch or malformed input";
  Location.input_name := input_value ic;
  let ast = input_value ic in
  close_in ic;