diff options
Diffstat (limited to 'tactics/inv.ml')
| -rw-r--r-- | tactics/inv.ml | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/tactics/inv.ml b/tactics/inv.ml index 94ec50e9d..4609c360e 100644 --- a/tactics/inv.ml +++ b/tactics/inv.ml @@ -190,12 +190,14 @@ let make_inv_predicate env sigma indf realargs id status concl = and introduces generalized hypotheis. Precondition: t=(mkVar id) *) -let rec dependent_hyps id idlist sign = +let rec dependent_hyps id idlist gl = let rec dep_rec =function | [] -> [] - | (id1,_,id1ty as d1)::l -> - if occur_var (Global.env()) id id1ty - then d1 :: dep_rec l + | (id1,_,_)::l -> + (* Update the type of id1: it may have been subject to rewriting *) + let d = pf_get_hyp gl id1 in + if occur_var_in_decl (Global.env()) id d + then d :: dep_rec l else dep_rec l in dep_rec idlist @@ -280,7 +282,7 @@ Nota: with Inversion_clear, only four useless hypotheses *) let generalizeRewriteIntros tac depids id gls = - let dids = dependent_hyps id depids (pf_env gls) in + let dids = dependent_hyps id depids gls in (tclTHENSEQ [bring_hyps dids; tac; (* may actually fail to replace if dependent in a previous eq *) |