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-rw-r--r--fstar/Primitives.fst8
1 files changed, 4 insertions, 4 deletions
diff --git a/fstar/Primitives.fst b/fstar/Primitives.fst
index fbf8140a..4642d080 100644
--- a/fstar/Primitives.fst
+++ b/fstar/Primitives.fst
@@ -7,7 +7,10 @@ open FStar.List.Tot
(*** Utilities *)
val list_update (#a : Type0) (ls : list a) (i : nat{i < length ls}) (x : a) :
- ls':list a{length ls' = length ls}
+ ls':list a{
+ length ls' = length ls /\
+ index ls' i == x
+ }
#push-options "--fuel 1"
let rec list_update #a ls i x =
match ls with
@@ -242,9 +245,6 @@ let vec_len (a : Type0) (v : vec a) : usize = length v
// The **forward** function shouldn't be used
let vec_push_fwd (a : Type0) (v : vec a) (x : a) : unit = ()
-
-// The **forward** function shouldn't be used
-let vec_push_fwd (a : Type0) (v : vec a) (x : a) : unit = ()
let vec_push_back (a : Type0) (v : vec a) (x : a) :
Pure (result (vec a))
(requires True)