diff options
Diffstat (limited to 'stm')
| -rw-r--r-- | stm/stm.ml | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/stm/stm.ml b/stm/stm.ml index 9771564752..97903e721b 100644 --- a/stm/stm.ml +++ b/stm/stm.ml @@ -846,7 +846,8 @@ end = struct (* {{{ *) | None, _ -> anomaly(str"Backtrack: tip with no vcs_backup") | Some vcs, _ -> vcs in let cb, _ = - Vcs_aux.find_proof_at_depth vcs (Vcs_aux.proof_nesting vcs) in + try Vcs_aux.find_proof_at_depth vcs (Vcs_aux.proof_nesting vcs) + with Failure _ -> raise Proof_global.NoCurrentProof in let n = fold_until (fun n (_,vcs,_,_,_) -> if List.mem cb (Vcs_.branches vcs) then `Cont (n+1) else `Stop n) 0 id in |