From a58fd3db5ccba3680d6e240f2e59a05b6c19a670 Mon Sep 17 00:00:00 2001
From: Andrey Bienkowski <hexagon-recursion@posteo.net>
Date: Thu, 10 Mar 2022 08:24:23 +0300
Subject: [PATCH] 1.2: Make switch fallthrough explicit

---
 src/borg/algorithms/crc32_clmul.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/borg/algorithms/crc32_clmul.c b/src/borg/algorithms/crc32_clmul.c
index 8a065390c..65b068675 100644
--- a/src/borg/algorithms/crc32_clmul.c
+++ b/src/borg/algorithms/crc32_clmul.c
@@ -363,8 +363,8 @@ crc32_clmul(const uint8_t *src, long len, uint32_t initial_crc)
              */
             uint32_t crc = ~initial_crc;
             switch (len) {
-                case 3: crc = (crc >> 8) ^ Crc32Lookup[0][(crc & 0xFF) ^ *src++];
-                case 2: crc = (crc >> 8) ^ Crc32Lookup[0][(crc & 0xFF) ^ *src++];
+                case 3: crc = (crc >> 8) ^ Crc32Lookup[0][(crc & 0xFF) ^ *src++]; // fallthrough
+                case 2: crc = (crc >> 8) ^ Crc32Lookup[0][(crc & 0xFF) ^ *src++]; // fallthrough
                 case 1: crc = (crc >> 8) ^ Crc32Lookup[0][(crc & 0xFF) ^ *src++];
             }
             return ~crc;