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authorJasper Hugunin2020-11-27 09:26:20 -0800
committerJasper Hugunin2020-11-27 09:26:51 -0800
commita1daae8800194166662c87e11a974a6ae3d24a4d (patch)
tree2c8cacdd9f38e089bcd32c2995e4107b6583a34d /tactics
parent7f3c46acc937eb9257c29b5881e5a8b17b28cd48 (diff)
A small fix for freshness in the `change` tactic
Diffstat (limited to 'tactics')
-rw-r--r--tactics/eqdecide.ml4
1 files changed, 2 insertions, 2 deletions
diff --git a/tactics/eqdecide.ml b/tactics/eqdecide.ml
index d4cc193eb3..9b3f9053cd 100644
--- a/tactics/eqdecide.ml
+++ b/tactics/eqdecide.ml
@@ -123,8 +123,8 @@ let idy = Id.of_string "y"
let mkGenDecideEqGoal rectype ops g =
let hypnames = pf_ids_set_of_hyps g in
- let xname = next_ident_away idx hypnames
- and yname = next_ident_away idy hypnames in
+ let xname = next_ident_away idx hypnames in
+ let yname = next_ident_away idy (Id.Set.add xname hypnames) in
(mkNamedProd (make_annot xname Sorts.Relevant) rectype
(mkNamedProd (make_annot yname Sorts.Relevant) rectype
(mkDecideEqGoal true ops