From 65c2796402077040a1943e93003ed6e5b9317d79 Mon Sep 17 00:00:00 2001
From: Robert Kausch <robert.kausch@freac.org>
Date: Mon, 30 Apr 2018 18:09:51 +0200
Subject: [PATCH] Fix CRC calculation for small blocks.

---
 src/libFLAC/bitreader.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libFLAC/bitreader.c b/src/libFLAC/bitreader.c
index 683e9f84..6a415099 100644
--- a/src/libFLAC/bitreader.c
+++ b/src/libFLAC/bitreader.c
@@ -128,7 +128,7 @@ static inline void crc16_update_word_(FLAC__BitReader *br, brword word)
 
 static inline void crc16_update_block_(FLAC__BitReader *br)
 {
-	if(br->crc16_align)
+	if(br->consumed_words > br->crc16_offset && br->crc16_align)
 		crc16_update_word_(br, br->buffer[br->crc16_offset++]);
 
 #if FLAC__BYTES_PER_WORD == 4
-- 
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