Bump Iris, fix compatibility with Iris/Coq.

opam

@@ -10,6 +10,6 @@ build: [make "-j%{jobs}%"]
 install: [make "install"]
 remove: [ "sh" "-c" "rm -rf '%{lib}%/coq/user-contrib/iris_time" ]
 depends: [
-  "coq-iris" { (= "dev.2019-09-20.0.b958d569") | (= "dev") }
+  "coq-iris" { (= "dev.2019-11-07.0.c3e6385b") | (= "dev") }
   "coq-tlc" { (= "20181116") | (= "dev") }
 ]

theories/Reduction.v

@@ -677,7 +677,7 @@ Section Safety.
       specialize (Hsafe _ _ _ eq_refl Hsteps (elem_of_list_here _ _)). clear Hsteps.
       destruct Hsafe as [ Hval | Hred ].
       + left. by eapply fill_val.
-      + destruct (to_val e') eqn:Hnotval ; first by eauto. right.
+      + destruct (to_val e') eqn:Hnotval; [by left; eauto|]. right.
         destruct Hred as (κ & _ & σ'' & efs & [ K2 e'2 e''2 Efill _ Hstep ]) ; simpl in *.
         eapply step_by_val in Efill as Efill' ; try eassumption ; destruct Efill' as [K' ->].
         rewrite fill_app in Efill ; apply fill_inj in Efill as ->.

theories/heap_lang/lang.v

@@ -186,8 +186,6 @@ Proof. destruct e=>//=. by intros [= <-]. Qed.
 Global Instance of_val_inj : Inj (=) (=) of_val.
 Proof. intros ??. congruence. Qed.
 
-Global Instance mach_int_eq_dec : EqDecision base_lit.
-
 Global Instance base_lit_eq_dec : EqDecision base_lit.
 Proof. solve_decision. Defined.
 Global Instance un_op_eq_dec : EqDecision un_op.