diff options
| -rw-r--r-- | pretyping/unification.ml | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/pretyping/unification.ml b/pretyping/unification.ml index d26195efc8..32b51eac49 100644 --- a/pretyping/unification.ml +++ b/pretyping/unification.ml @@ -637,11 +637,16 @@ let w_merge env with_types flags (evd,metas,evars) = else begin let rhs' = subst_meta_instances metas rhs in match kind_of_term rhs with - | App (f,cl) when is_mimick_head f & occur_meta rhs' -> + | App (f,cl) when occur_meta rhs' -> if occur_evar evn rhs' then error_occur_check env evd evn rhs'; - let evd' = mimick_evar evd flags f (Array.length cl) evn in - w_merge_rec evd' metas evars eqns + if is_mimick_head f then + let evd' = mimick_evar evd flags f (Array.length cl) evn in + w_merge_rec evd' metas evars eqns + else + let evd', rhs'' = pose_all_metas_as_evars env evd rhs' in + w_merge_rec (solve_simple_evar_eqn env evd' ev rhs'') + metas evars' eqns | _ -> w_merge_rec (solve_simple_evar_eqn env evd ev rhs') metas evars' eqns |