From 63142f2d37ba014a23f66fb95abb8b323fb850c2 Mon Sep 17 00:00:00 2001
From: Joao Sousa <jcs@lasige.di.fc.ul.pt>
Date: Mon, 29 Feb 2016 19:37:08 +0000
Subject: [PATCH] Fixed a bug in the state transfer that would happen when the
 system had only a single replica.

---
 .../statemanagement/strategy/StandardStateManager.java   | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/bftsmart/statemanagement/strategy/StandardStateManager.java b/src/bftsmart/statemanagement/strategy/StandardStateManager.java
index e9ac0ed6..d2c8cf1e 100644
--- a/src/bftsmart/statemanagement/strategy/StandardStateManager.java
+++ b/src/bftsmart/statemanagement/strategy/StandardStateManager.java
@@ -87,8 +87,13 @@ public class StandardStateManager extends BaseStateManager {
             //pos = this.SVController.getCurrentViewPos(replica);
             //replica = this.SVController.getCurrentViewProcesses()[(pos + 1) % SVController.getCurrentViewN()];
             
-            pos = r.nextInt(processes.length);
-            replica = processes[pos];
+            if (processes != null && processes.length > 1) {
+                pos = r.nextInt(processes.length);
+                replica = processes[pos];
+            } else {
+                replica = 0;
+                break;
+            }
         } while (replica == SVController.getStaticConf().getProcessId());
     }
     
-- 
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