From 38768e5396972213aa44d2f163ae3c1562961958 Mon Sep 17 00:00:00 2001
From: Yicheng Qin <qycqycqycqycqyc@gmail.com>
Date: Tue, 2 Dec 2014 21:58:48 -0800
Subject: [PATCH] raft: panic if loaded commit is out of range

---
 raft/raft.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/raft/raft.go b/raft/raft.go
index bd3347384..384af0775 100644
--- a/raft/raft.go
+++ b/raft/raft.go
@@ -628,6 +628,9 @@ func (r *raft) promotable() bool {
 }
 
 func (r *raft) loadState(state pb.HardState) {
+	if state.Commit < r.raftLog.committed || state.Commit > r.raftLog.lastIndex() {
+		log.Panicf("raft: %x state.commit %d is out of range [%d, %d]", r.id, state.Commit, r.raftLog.committed, r.raftLog.lastIndex())
+	}
 	r.raftLog.committed = state.Commit
 	r.Term = state.Term
 	r.Vote = state.Vote