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Diffstat (limited to 'contrib/recdef/recdef.ml4')
| -rw-r--r-- | contrib/recdef/recdef.ml4 | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/contrib/recdef/recdef.ml4 b/contrib/recdef/recdef.ml4 index a4acd9a9..40832677 100644 --- a/contrib/recdef/recdef.ml4 +++ b/contrib/recdef/recdef.ml4 @@ -499,11 +499,12 @@ let rec introduce_all_equalities func eqs values specs bound le_proofs (heq::cond_eqs)] g;; let string_match s = - try - for i = 0 to 3 do - if String.get s i <> String.get "Acc_" i then failwith "string_match" - done; - with Invalid_argument _ -> failwith "string_match" + if String.length s < 3 then failwith "string_match"; + try + for i = 0 to 3 do + if String.get s i <> String.get "Acc_" i then failwith "string_match" + done; + with Invalid_argument _ -> failwith "string_match" let retrieve_acc_var g = (* Julien: I don't like this version .... *) |