diff options
| -rw-r--r-- | tactics/rewrite.ml4 | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tactics/rewrite.ml4 b/tactics/rewrite.ml4 index 1cc1b27fe0..ef3ec14702 100644 --- a/tactics/rewrite.ml4 +++ b/tactics/rewrite.ml4 @@ -1867,7 +1867,8 @@ let setoid_proof gl ty fn fallback = let env = pf_env gl in try let rel, args = decompose_app_rel env (project gl) (pf_concl gl) in - let evm, car = project gl, pf_type_of gl args.(0) in + let evm = project gl in + let car = pi3 (List.hd (fst (Reduction.dest_prod env (Typing.type_of env evm rel)))) in fn env evm car rel gl with e -> try fallback gl |