Commit 67bef9f9 authored by Glen Mével's avatar Glen Mével
Browse files

fix `head_stuck`

parent 1ab890fc
......@@ -101,7 +101,7 @@ Section ectx_language.
Definition head_irreducible (e : expr Λ) (σ : state Λ) :=
e' σ' efs, ¬head_step e σ e' σ' efs.
Definition head_stuck (e : expr Λ) (σ : state Λ) :=
to_val e = None K e', e = fill K e' head_irreducible e' σ.
to_val e = None head_irreducible e σ.
(* All non-value redexes are at the root. In other words, all sub-redexes are
values. *)
......@@ -168,9 +168,8 @@ Section ectx_language.
Lemma head_stuck_stuck e σ :
head_stuck e σ sub_redexes_are_values e stuck e σ.
move=>[] ? Hirr ?. split; first done.
apply prim_head_irreducible; last done.
apply (Hirr empty_ectx). by rewrite fill_empty.
intros [] ?. split; first done.
by apply prim_head_irreducible.
Lemma ectx_language_atomic a e :
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