From c6512c1b86406497de71b5fe64d320ce88a8d77e Mon Sep 17 00:00:00 2001
From: Mokhtar Naamani <mokhtar.naamani@gmail.com>
Date: Fri, 29 Mar 2019 12:50:48 +0200
Subject: [PATCH] disable and clearn account indices, no account index created
 for new accounts

---
 src/lib.rs       |  4 ++--
 src/migration.rs | 12 ++++++++++--
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index bf8bba4662..4db5b8c809 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -182,9 +182,9 @@ impl balances::Trait for Runtime {
 	/// The type for recording an account's balance.
 	type Balance = u128;
 	/// What to do if an account's free balance gets zeroed.
-	type OnFreeBalanceZero = Staking;
+	type OnFreeBalanceZero = ();
 	/// What to do if a new account is created.
-	type OnNewAccount = Indices;
+	type OnNewAccount = ();
 	/// Restrict whether an account can transfer funds. We don't place any further restrictions.
 	type EnsureAccountLiquid = Staking;
 	/// The uniquitous event type.
diff --git a/src/migration.rs b/src/migration.rs
index d835e0a17d..6dcf68c601 100644
--- a/src/migration.rs
+++ b/src/migration.rs
@@ -1,13 +1,15 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
-use srml_support::{StorageValue, dispatch::Result, decl_module, decl_storage, decl_event, ensure};
+use srml_support::{StorageValue, StorageMap, dispatch::Result, decl_module, decl_storage, decl_event, ensure};
+use runtime_primitives::traits::{As};
 use system;
 use rstd::prelude::*;
 use runtime_io::print;
 use crate::{VERSION};
 use crate::membership::members;
+use {indices};
 
-pub trait Trait: system::Trait + members::Trait {
+pub trait Trait: system::Trait + members::Trait + indices::Trait {
     type Event: From<Event<Self>> + Into<<Self as system::Trait>::Event>;
 }
 
@@ -40,6 +42,12 @@ impl<T: Trait> Module<T> {
 
         <members::Module<T>>::initialize_storage();
 
+
+        // Clear account indices
+        for i in 0..65535 {
+            <indices::EnumSet<T>>::remove(&<T as indices::Trait>::AccountIndex::sa(i));
+        }
+
         // ...
         // add initialization of other modules introduced in this runtime
         // ...