[gustavoars-linux:for-next/clang-fallthrough] BUILD SUCCESS WITH WARNING 58d0d2d2e7dc1b1a4997bb9c47d6cf428f2d3a00

[kernel test robot]

tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git for-next/clang-fallthrough
branch HEAD: 58d0d2d2e7dc1b1a4997bb9c47d6cf428f2d3a00  Revert "Revert "Makefile: Enable -Wimplicit-fallthrough for Clang""

Warning reports:

https://lore.kernel.org/lkml/202108051403.tBfqfI49-lkp@xxxxxxxxx

Warning in current branch:

warning: fallthrough annotation in unreachable code [-Wimplicit-fallthrough]

Warning ids grouped by kconfigs:

clang_recent_errors
`-- hexagon-randconfig-r023-20210804
    `-- warning:fallthrough-annotation-in-unreachable-code

elapsed time: 721m

configs tested: 96
configs skipped: 3

gcc tested configs:
arm                                 defconfig
arm64                            allyesconfig
arm64                               defconfig
arm                              allyesconfig
arm                              allmodconfig
i386                 randconfig-c001-20210804
powerpc                      cm5200_defconfig
arm                            xcep_defconfig
mips                             allmodconfig
powerpc                      acadia_defconfig
sh                   rts7751r2dplus_defconfig
mips                        workpad_defconfig
mips                      fuloong2e_defconfig
powerpc                 mpc8560_ads_defconfig
m68k                       m5249evb_defconfig
arm                           viper_defconfig
powerpc                     tqm5200_defconfig
arm                          imote2_defconfig
ia64                             allmodconfig
ia64                                defconfig
ia64                             allyesconfig
x86_64                            allnoconfig
m68k                             allmodconfig
m68k                                defconfig
m68k                             allyesconfig
nios2                               defconfig
arc                              allyesconfig
nds32                             allnoconfig
nds32                               defconfig
nios2                            allyesconfig
csky                                defconfig
alpha                               defconfig
alpha                            allyesconfig
xtensa                           allyesconfig
h8300                            allyesconfig
arc                                 defconfig
sh                               allmodconfig
parisc                              defconfig
s390                             allyesconfig
s390                             allmodconfig
parisc                           allyesconfig
s390                                defconfig
i386                             allyesconfig
sparc                            allyesconfig
sparc                               defconfig
i386                                defconfig
mips                             allyesconfig
powerpc                          allyesconfig
powerpc                          allmodconfig
powerpc                           allnoconfig
i386                 randconfig-a005-20210804
i386                 randconfig-a004-20210804
i386                 randconfig-a002-20210804
i386                 randconfig-a006-20210804
i386                 randconfig-a003-20210804
i386                 randconfig-a001-20210804
x86_64               randconfig-a012-20210804
x86_64               randconfig-a016-20210804
x86_64               randconfig-a011-20210804
x86_64               randconfig-a013-20210804
x86_64               randconfig-a014-20210804
x86_64               randconfig-a015-20210804
i386                 randconfig-a012-20210805
i386                 randconfig-a011-20210805
i386                 randconfig-a015-20210805
i386                 randconfig-a013-20210805
i386                 randconfig-a014-20210805
i386                 randconfig-a016-20210805
riscv                    nommu_k210_defconfig
riscv                            allyesconfig
riscv                    nommu_virt_defconfig
riscv                             allnoconfig
riscv                               defconfig
riscv                          rv32_defconfig
riscv                            allmodconfig
um                           x86_64_defconfig
um                             i386_defconfig
x86_64                           allyesconfig
x86_64                    rhel-8.3-kselftests
x86_64                              defconfig
x86_64                               rhel-8.3
x86_64                                  kexec

clang tested configs:
x86_64               randconfig-c001-20210805
x86_64               randconfig-c001-20210804
x86_64               randconfig-a012-20210805
x86_64               randconfig-a016-20210805
x86_64               randconfig-a011-20210805
x86_64               randconfig-a013-20210805
x86_64               randconfig-a014-20210805
x86_64               randconfig-a015-20210805
x86_64               randconfig-a002-20210804
x86_64               randconfig-a006-20210804
x86_64               randconfig-a004-20210804
x86_64               randconfig-a003-20210804
x86_64               randconfig-a001-20210804
x86_64               randconfig-a005-20210804

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