From 09e3cdfebf0a8913c2742bcbde6d1beee3fc7e0d Mon Sep 17 00:00:00 2001
From: Gilbert Chen <gchen@acrosync.com>
Date: Mon, 8 Jun 2020 10:53:01 -0400
Subject: [PATCH] Ignore 0-byte chunks passed in by the chunk reader.

The fixed-size chunk reader may create 0-byte chunks from empty files.  This
may cause validation errors when preparing the snapshot file as the last step
of a backup.
---
 src/duplicacy_backupmanager.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/duplicacy_backupmanager.go b/src/duplicacy_backupmanager.go
index 2e5a908..1827d7f 100644
--- a/src/duplicacy_backupmanager.go
+++ b/src/duplicacy_backupmanager.go
@@ -520,6 +520,11 @@ func (manager *BackupManager) Backup(top string, quickMode bool, threads int, ta
 				chunkID := chunk.GetID()
 				chunkSize := chunk.GetLength()
 
+				if chunkSize == 0 {
+					LOG_DEBUG("CHUNK_EMPTY", "Ignored chunk %s of size 0", chunkID)
+					return
+				}
+
 				chunkIndex++
 
 				_, found := chunkCache[chunkID]