[SLOF] [PATCH] ipv6: Fix gcc9 warnings

Alexey Kardashevskiy aik at ozlabs.ru
Thu Oct 17 16:54:01 AEDT 2019

On 16/10/2019 22:54, Thomas Huth wrote:
> On 30/09/2019 09.43, Thomas Huth wrote:
>> GCC 9 introduced some new compiler warnings that occur when taking the
>> address of a packed struct, e.g.:
>>  lib/libnet/icmpv6.c:173:21: warning: taking address of packed member of
>>  ‘struct ip6hdr’ may result in an unaligned pointer value [-Waddress-of-packed-member]
>>   173 |  rtr = find_router (&(ip6h->src));
>>       |                     ^~~~~~~~~~~~
>> Since these warnings are mainly about the ip6_addr_t values that are
>> embedded in these packed structs, and ip6_addr_t is reasonable small
>> (just 128 bit), let's fix it by passing around the IPv6 addresses by
>> value instead of pointer, which looks a little bit nicer anyway.
>> Signed-off-by: Alexey Kardashevskiy <aik at ozlabs.ru>
>> [thuth: Fixed more spots, adjusted the coding style, added patch description]
>> Signed-off-by: Thomas Huth <thuth at redhat.com>
>> ---
>>  Alexey, can you additionally commit your "ipv6: Fix more gcc9 warnings"
>>  patch? ... with both patches applied, the libnet code is then finally
>>  free from compiler warnings for me.
> Ping?

I was off for 1.5 weeks, I'll test and push in the next couple of days. Cheers.


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