[PATCH 1/2] btrfs-progs: utils: Replace __attribute__(fallthrough)

[Marcos Paulo de Souza]

From: Marcos Paulo de Souza <mpdeso...@suse.com>

When compiling with clang, this warning is shown:

common/utils.c:404:3: warning: declaration does not declare anything 
[-Wmissing-declarations]
                __attribute__ ((fallthrough));

This attribute seems to silence the same warning in GCC. Changing this
attribute with /* fallthrough */ fixes the warning for both gcc and
clang.

Signed-off-by: Marcos Paulo de Souza <mpdeso...@suse.com>
---
 common/utils.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/common/utils.c b/common/utils.c
index 2cf15c33..a88336b3 100644
--- a/common/utils.c
+++ b/common/utils.c
@@ -401,15 +401,15 @@ int pretty_size_snprintf(u64 size, char *str, size_t 
str_size, unsigned unit_mod
        case UNITS_TBYTES:
                base *= mult;
                num_divs++;
-               __attribute__ ((fallthrough));
+               /* fallthrough */
        case UNITS_GBYTES:
                base *= mult;
                num_divs++;
-               __attribute__ ((fallthrough));
+               /* fallthrough */
        case UNITS_MBYTES:
                base *= mult;
                num_divs++;
-               __attribute__ ((fallthrough));
+               /* fallthrough */
        case UNITS_KBYTES:
                num_divs++;
                break;
@@ -1135,14 +1135,14 @@ int test_num_disk_vs_raid(u64 metadata_profile, u64 
data_profile,
        default:
        case 4:
                allowed |= BTRFS_BLOCK_GROUP_RAID10;
-               __attribute__ ((fallthrough));
+               /* fallthrough */
        case 3:
                allowed |= BTRFS_BLOCK_GROUP_RAID6;
-               __attribute__ ((fallthrough));
+               /* fallthrough */
        case 2:
                allowed |= BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1 |
                        BTRFS_BLOCK_GROUP_RAID5;
-               __attribute__ ((fallthrough));
+               /* fallthrough */
        case 1:
                allowed |= BTRFS_BLOCK_GROUP_DUP;
        }
-- 
2.23.0