diff options
Diffstat (limited to 'pretyping/tacred.ml')
| -rw-r--r-- | pretyping/tacred.ml | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/pretyping/tacred.ml b/pretyping/tacred.ml index f225e79f..e8bde1f3 100644 --- a/pretyping/tacred.ml +++ b/pretyping/tacred.ml @@ -6,7 +6,7 @@ (* * GNU Lesser General Public License Version 2.1 *) (************************************************************************) -(* $Id: tacred.ml,v 1.75.2.6 2004/12/29 10:17:10 herbelin Exp $ *) +(* $Id: tacred.ml,v 1.75.2.7 2005/11/02 13:18:43 herbelin Exp $ *) open Pp open Util @@ -204,13 +204,14 @@ let invert_name labs l na0 env sigma ref = function match refi with | None -> None | Some ref -> - match reference_opt_value sigma env ref with + try match reference_opt_value sigma env ref with | None -> None | Some c -> let labs',ccl = decompose_lam c in let _, l' = whd_betalet_stack ccl in let labs' = List.map snd labs' in if labs' = labs & l = l' then Some ref else None + with Not_found (* Undefined ref *) -> None else Some ref | Anonymous -> None (* Actually, should not occur *) |