Buildresult: gustavoars/x86_64-allmodconfig/x86_64-gcc8 built on Apr 20 2020, 19:57

kisskb

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Status:	OK
Date/Time:	Apr 20 2020, 19:57
Duration:	0:31:21.360033
Builder:	ka3
Revision:	firmware: google: vpd: Replace zero-length array with flexible-array member (`28bf8c4a2f2a6fc2db18574246cefe5373efbdf4)`
Target:	gustavoars/x86_64-allmodconfig/x86_64-gcc8
Branch:	gustavoars
Compiler:	x86_64-gcc8 (x86_64-linux-gcc (GCC) 8.1.0 / GNU ld (GNU Binutils) 2.30)
Config:	allmodconfig (download)
Log:	Download original Possible warnings (1) drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c:1133:27: warning: 'rule' may be used uninitialized in this function [-Wmaybe-uninitialized] Full Log # git rev-parse -q --verify 28bf8c4a2f2a6fc2db18574246cefe5373efbdf4^{commit} 28bf8c4a2f2a6fc2db18574246cefe5373efbdf4 already have revision, skipping fetch # git checkout -q -f -B kisskb 28bf8c4a2f2a6fc2db18574246cefe5373efbdf4 # git clean -qxdf # < git log -1 # commit 28bf8c4a2f2a6fc2db18574246cefe5373efbdf4 # Author: Gustavo A. R. Silva <gustavo@embeddedor.com> # Date: Fri Feb 21 09:32:33 2020 -0600 # # firmware: google: vpd: 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/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 28bf8c4a2f2a6fc2db18574246cefe5373efbdf4 # < make -s -j 20 ARCH=x86 O=/kisskb/build/gustavoars_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- allmodconfig # Added to kconfig CONFIG_BUILD_DOCSRC=n # Added to kconfig CONFIG_MODULE_SIG=n # Added to kconfig CONFIG_SAMPLES=n # < make -s -j 20 ARCH=x86 O=/kisskb/build/gustavoars_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- help # make -s -j 20 ARCH=x86 O=/kisskb/build/gustavoars_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- olddefconfig # make -s -j 20 ARCH=x86 O=/kisskb/build/gustavoars_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- /kisskb/src/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c: In function 'mlx5_tc_ct_flow_offload': /kisskb/src/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c:1133:27: warning: 'rule' may be used uninitialized in this function [-Wmaybe-uninitialized] struct mlx5_flow_handle *rule; ^~~~ Completed OK # rm -rf /kisskb/build/gustavoars_x86-allmodconfig_x86_64-gcc8 # Build took: 0:31:21.360033

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