# git rev-parse -q --verify b86f936658ba1882f799d3b4328cd7e1c5839e43^{commit}
b86f936658ba1882f799d3b4328cd7e1c5839e43
already have revision, skipping fetch
# git checkout -q -f -B kisskb b86f936658ba1882f799d3b4328cd7e1c5839e43
# git clean -qxdf
# < git log -1
# commit b86f936658ba1882f799d3b4328cd7e1c5839e43
# Author: Gustavo A. R. Silva <gustavo@embeddedor.com>
# Date:   Fri Feb 21 09:15:44 2020 -0600
# 
#     firmware: dmi-sysfs: Replace zero-length array with flexible-array member
#     
#     The current codebase makes use of the zero-length array language
#     extension to the C90 standard, but the preferred mechanism to declare
#     variable-length types such as these ones is a flexible array member[1][2],
#     introduced in C99:
#     
#     struct foo {
#             int stuff;
#             struct boo array[];
#     };
#     
#     By making use of the mechanism above, we will get a compiler warning
#     in case the flexible array does not occur last in the structure, which
#     will help us prevent some kind of undefined behavior bugs from being
#     inadvertently introduced[3] to the codebase from now on.
#     
#     Also, notice that, dynamic memory allocations won't be affected by
#     this change:
#     
#     "Flexible array members have incomplete type, and so the sizeof operator
#     may not be applied. As a quirk of the original implementation of
#     zero-length arrays, sizeof evaluates to zero."[1]
#     
#     This issue was found with the help of Coccinelle.
#     
#     [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
#     [2] https://github.com/KSPP/linux/issues/21
#     [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour")
#     
#     Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/alpha-linux/bin/alpha-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/alpha-linux/bin/alpha-linux-ld --version
# < git log --format=%s --max-count=1 b86f936658ba1882f799d3b4328cd7e1c5839e43
# < make -s -j 48 ARCH=alpha O=/kisskb/build/gustavoars_alpha-defconfig_alpha CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/alpha-linux/bin/alpha-linux-  defconfig
# < make -s -j 48 ARCH=alpha O=/kisskb/build/gustavoars_alpha-defconfig_alpha CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/alpha-linux/bin/alpha-linux-  help
# make -s -j 48 ARCH=alpha O=/kisskb/build/gustavoars_alpha-defconfig_alpha CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/alpha-linux/bin/alpha-linux-  olddefconfig
# make -s -j 48 ARCH=alpha O=/kisskb/build/gustavoars_alpha-defconfig_alpha CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/alpha-linux/bin/alpha-linux-  
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:72:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:338:21: note: 'pdeo' was declared here
/kisskb/src/fs/io_uring.c: In function '__io_sqe_files_update':
/kisskb/src/fs/io_uring.c:5824:13: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
WARNING: "saved_config" [vmlinux] is COMMON symbol
  Kernel arch/alpha/boot/vmlinux.gz is ready
Completed OK
# rm -rf /kisskb/build/gustavoars_alpha-defconfig_alpha
# Build took: 0:00:43.691116