Commit 1f160c6b authored by Robbert Krebbers's avatar Robbert Krebbers
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Make gmap_empty Opaque to avoid simpl unfolding it.

This happened for example in <[i:=x]>∅, where simpl unfold insert (despite
it being declared simpl never) because ∅ reduces to a constructor.
parent 0af80759
......@@ -33,6 +33,7 @@ Defined.
Instance gmap_lookup `{Countable K} {A} : Lookup K A (gmap K A) := λ i m,
let (m,_) := m in m !! encode i.
Instance gmap_empty `{Countable K} {A} : Empty (gmap K A) := GMap I.
Global Opaque gmap_empty.
Lemma gmap_partial_alter_wf `{Countable K} {A} (f : option A option A) m i :
gmap_wf m gmap_wf (partial_alter f (encode i) m).
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