From 8c4f07ef1b2a9cd2fcd0dcd01113115065469449 Mon Sep 17 00:00:00 2001
From: Jakob Borg <jakob@nym.se>
Date: Sat, 24 May 2014 12:08:28 +0200
Subject: [PATCH] Crash slightly more controlled under weird circumstances...

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

diff --git a/files/set.go b/files/set.go
index 4b4c285f..646e9ae4 100644
--- a/files/set.go
+++ b/files/set.go
@@ -210,6 +210,9 @@ func (m *Set) equals(id uint, fs []scanner.File) bool {
 
 func (m *Set) update(cid uint, fs []scanner.File) {
 	remFiles := m.remoteKey[cid]
+	if remFiles == nil {
+		l.Fatalln("update before replace for cid", cid)
+	}
 	for _, f := range fs {
 		n := f.Name
 		fk := keyFor(f)