kernel_optimize_test/include
Gustavo A. R. Silva 6daf141401 netfilter: 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]

Lastly, fix checkpatch.pl warning
WARNING: __aligned(size) is preferred over __attribute__((aligned(size)))
in net/bridge/netfilter/ebtables.c

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 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2020-03-15 15:20:16 +01:00
..
acpi ACPI fixes for 5.6-rc4 2020-02-28 09:02:18 -08:00
asm-generic
clocksource
crypto crypto: x86/curve25519 - support assemblers with no adx support 2020-03-05 18:28:09 +11:00
drm drm/dp_mst: Use full_pbn instead of available_pbn for bandwidth checks 2020-03-12 19:07:24 -04:00
dt-bindings ARM: SoC: late updates 2020-02-08 14:17:27 -08:00
keys
kunit
kvm
linux netfilter: Replace zero-length array with flexible-array member 2020-03-15 15:20:16 +01:00
math-emu
media
misc
net netfilter: Replace zero-length array with flexible-array member 2020-03-15 15:20:16 +01:00
pcmcia
ras
rdma
scsi scsi: Revert "target: iscsi: Wait for all commands to finish before freeing a session" 2020-02-14 17:13:54 -05:00
soc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-03-12 22:34:48 -07:00
sound ASoC: Fixes for v5.6 2020-03-07 07:24:36 +01:00
target
trace bpf: Reliably preserve btf_trace_xxx types 2020-03-02 16:49:55 -08:00
uapi netfilter: Replace zero-length array with flexible-array member 2020-03-15 15:20:16 +01:00
vdso
video
xen xen/xenbus: fix locking 2020-03-05 09:42:23 -06:00