Buildresult: gustavoars/alpha-defconfig/alpha-gcc4.9 built on Apr 22 2020, 17:35

kisskb

Revisions | Branches | Compilers | Configs | Build Results | Build Failures |

Status:	OK
Date/Time:	Apr 22 2020, 17:35
Duration:	0:01:31.787998
Builder:	ka3
Revision:	firmware: google: vpd: Replace zero-length array with flexible-array member (`7ccc9de5c708922203eee06901af49b3f47207aa)`
Target:	gustavoars/alpha-defconfig/alpha-gcc4.9
Branch:	gustavoars
Compiler:	alpha-gcc4.9 (alpha-linux-gcc (GCC) 4.9.4 / GNU ld (GNU Binutils) 2.29.1.20170915)
Config:	defconfig (download)
Log:	Download original Possible warnings (3) <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] kernel/futex.c:1676:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized] WARNING: modpost: "saved_config" [vmlinux] is COMMON symbol Full Log # git rev-parse -q --verify 7ccc9de5c708922203eee06901af49b3f47207aa^{commit} 7ccc9de5c708922203eee06901af49b3f47207aa already have revision, skipping fetch # git checkout -q -f -B kisskb 7ccc9de5c708922203eee06901af49b3f47207aa # git clean -qxdf # < git log -1 # commit 7ccc9de5c708922203eee06901af49b3f47207aa # 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-4.9.4-nolibc/alpha-linux/bin/alpha-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux-ld --version # < git log --format=%s --max-count=1 7ccc9de5c708922203eee06901af49b3f47207aa # < make -s -j 10 ARCH=alpha O=/kisskb/build/gustavoars_alpha-defconfig_alpha-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux- defconfig # < make -s -j 10 ARCH=alpha O=/kisskb/build/gustavoars_alpha-defconfig_alpha-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux- help # make -s -j 10 ARCH=alpha O=/kisskb/build/gustavoars_alpha-defconfig_alpha-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux- olddefconfig # make -s -j 10 ARCH=alpha O=/kisskb/build/gustavoars_alpha-defconfig_alpha-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/alpha-linux/bin/alpha-linux- <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] /kisskb/src/kernel/futex.c: In function 'do_futex': /kisskb/src/kernel/futex.c:1676:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized] return oldval == cmparg; ^ /kisskb/src/kernel/futex.c:1652:6: note: 'oldval' was declared here int oldval, ret; ^ WARNING: modpost: "saved_config" [vmlinux] is COMMON symbol Kernel arch/alpha/boot/vmlinux.gz is ready Completed OK # rm -rf /kisskb/build/gustavoars_alpha-defconfig_alpha-gcc4.9 # Build took: 0:01:31.787998

© Michael Ellerman 2006-2018.