# git rev-parse -q --verify 308f765116e9176bf508c10b72ca80ad594e3119^{commit}
308f765116e9176bf508c10b72ca80ad594e3119
already have revision, skipping fetch
# git checkout -q -f -B kisskb 308f765116e9176bf508c10b72ca80ad594e3119
# git clean -qxdf
# < git log -1
# commit 308f765116e9176bf508c10b72ca80ad594e3119
# Author: Gustavo A. R. Silva <gustavoars@kernel.org>
# Date:   Mon Aug 24 15:20:04 2020 -0500
# 
#     lib: Revert use of fallthrough pseudo-keyword
#     
#     The following build error was reported by Nathan Chancellor:
#     
#     "$ scripts/config --file arch/powerpc/configs/powernv_defconfig -e KERNEL_XZ
#     
#     $ make -skj"$(nproc)" ARCH=powerpc CROSS_COMPILE=powerpc64le-linux- distclean powernv_defconfig zImage
#     ...
#     In file included from arch/powerpc/boot/../../../lib/decompress_unxz.c:234,
#                      from arch/powerpc/boot/decompress.c:38:
#     arch/powerpc/boot/../../../lib/xz/xz_dec_stream.c: In function 'dec_main':
#     arch/powerpc/boot/../../../lib/xz/xz_dec_stream.c:586:4: error: 'fallthrough' undeclared (first use in this function)
#       586 |    fallthrough;
#           |    ^~~~~~~~~~~
#     arch/powerpc/boot/../../../lib/xz/xz_dec_stream.c:586:4: note: each undeclared identifier is reported only once for each function it appears in
#     In file included from arch/powerpc/boot/../../../lib/decompress_unxz.c:235,
#                      from arch/powerpc/boot/decompress.c:38:
#     arch/powerpc/boot/../../../lib/xz/xz_dec_lzma2.c: In function 'xz_dec_lzma2_run':
#     arch/powerpc/boot/../../../lib/xz/xz_dec_lzma2.c:1046:4: error: 'fallthrough' undeclared (first use in this function)
#      1046 |    fallthrough;
#           |    ^~~~~~~~~~~
#     make[2]: *** [arch/powerpc/boot/Makefile:215: arch/powerpc/boot/decompress.o] Error 1
#     make[2]: Target 'arch/powerpc/boot/zImage' not remade because of errors.
#     make[1]: *** [arch/powerpc/Makefile:295: zImage] Error 2
#     make: *** [Makefile:335: __build_one_by_one] Error 2
#     make: Target 'distclean' not remade because of errors.
#     make: Target 'powernv_defconfig' not remade because of errors.
#     make: Target 'zImage' not remade because of errors.
#     
#     This will end up affecting distribution configurations such as Debian
#     and OpenSUSE according to my testing. I am not sure what the solution
#     is, the PowerPC wrapper does not set -D__KERNEL__ so I am not sure that
#     compiler_attributes.h can be safely included."
#     
#     In order to avoid these sort of problems, it seems that the best
#     solution is to use /* fall through */ comments instead of the
#     fallthrough pseudo-keyword macro in lib/, for now.
#     
#     Reported-by: Nathan Chancellor <natechancellor@gmail.com>
#     Fixes: df561f6688fe ("treewide: Use fallthrough pseudo-keyword")
#     Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
# < /opt/cross/kisskb/korg/gcc-10.1.0-nolibc/arc-linux/bin/arc-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-10.1.0-nolibc/arc-linux/bin/arc-linux-ld --version
# < git log --format=%s --max-count=1 308f765116e9176bf508c10b72ca80ad594e3119
# < make -s -j 24 ARCH=arc O=/kisskb/build/gustavoars_axs103_smp_defconfig_arc-gcc10 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-10.1.0-nolibc/arc-linux/bin/arc-linux-  axs103_smp_defconfig
# Added to kconfig CONFIG_INITRAMFS_SOURCE=""
# < make -s -j 24 ARCH=arc O=/kisskb/build/gustavoars_axs103_smp_defconfig_arc-gcc10 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-10.1.0-nolibc/arc-linux/bin/arc-linux-  help
# make -s -j 24 ARCH=arc O=/kisskb/build/gustavoars_axs103_smp_defconfig_arc-gcc10 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-10.1.0-nolibc/arc-linux/bin/arc-linux-  olddefconfig
# make -s -j 24 ARCH=arc O=/kisskb/build/gustavoars_axs103_smp_defconfig_arc-gcc10 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-10.1.0-nolibc/arc-linux/bin/arc-linux-  
Completed OK
# rm -rf /kisskb/build/gustavoars_axs103_smp_defconfig_arc-gcc10
# Build took: 0:01:26.685087