From 93765638a5bb8a9ca744c12f7a38186d361e60f5 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Tue, 2 Feb 2016 14:05:57 +0100
Subject: [PATCH] remark a TODO for later

---
 barrier/lifting.v | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/barrier/lifting.v b/barrier/lifting.v
index 6251fafc4..e5e821312 100644
--- a/barrier/lifting.v
+++ b/barrier/lifting.v
@@ -21,6 +21,8 @@ Lemma wp_alloc_pst E σ e v Q :
   (ownP σ ★ ▷ (∀ l, ■(σ !! l = None) ∧ ownP (<[l:=v]>σ) -★ Q (LocV l)))
        ⊑ wp E (Alloc e) Q.
 Proof.
+  (* TODO RJ: Without the set, ssreflect rewrite doesn't work. Figure out why or
+     reprot a bug. *)
   intros. set (φ v' σ' := ∃ l, v' = LocV l ∧ σ' = <[l:=v]>σ ∧ σ !! l = None).
   rewrite -(wp_lift_atomic_step (Alloc e) φ σ) // /φ;
     last by intros; inv_step; eauto 8.
-- 
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