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-rw-r--r--lib/dyn.ml3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/dyn.ml b/lib/dyn.ml
index 92fa14f6d4..3d6d43f8c4 100644
--- a/lib/dyn.ml
+++ b/lib/dyn.ml
@@ -10,7 +10,8 @@ type t = string * Obj.t
let dyntab = ref ([] : string list)
let create s =
- if List.mem s !dyntab then anomaly "Dyn.create: already declared dynamic";
+ if List.mem s !dyntab then
+ anomaly ("Dyn.create: already declared dynamic " ^ s);
dyntab := s :: !dyntab;
((fun v -> (s,Obj.repr v)),
(fun (s',rv) ->