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6daf141401
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
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|---|---|---|
| .. | ||
| ip6_tables.c | ||
| ip6t_ah.c | ||
| ip6t_eui64.c | ||
| ip6t_frag.c | ||
| ip6t_hbh.c | ||
| ip6t_ipv6header.c | ||
| ip6t_mh.c | ||
| ip6t_NPT.c | ||
| ip6t_REJECT.c | ||
| ip6t_rpfilter.c | ||
| ip6t_rt.c | ||
| ip6t_srh.c | ||
| ip6t_SYNPROXY.c | ||
| ip6table_filter.c | ||
| ip6table_mangle.c | ||
| ip6table_nat.c | ||
| ip6table_raw.c | ||
| ip6table_security.c | ||
| Kconfig | ||
| Makefile | ||
| nf_conntrack_reasm.c | ||
| nf_defrag_ipv6_hooks.c | ||
| nf_dup_ipv6.c | ||
| nf_flow_table_ipv6.c | ||
| nf_log_ipv6.c | ||
| nf_reject_ipv6.c | ||
| nf_socket_ipv6.c | ||
| nf_tproxy_ipv6.c | ||
| nft_dup_ipv6.c | ||
| nft_fib_ipv6.c | ||
| nft_reject_ipv6.c | ||