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Message-ID: <3730d7e4-058f-421f-8ecf-a9475440ef58@gmail.com>
Date: Fri, 9 Feb 2024 15:14:28 -0700
From: David Ahern <dsahern@...il.com>
To: Stephen Hemminger <stephen@...workplumber.org>,
Andrea Claudi <aclaudi@...hat.com>
Cc: netdev@...r.kernel.org, sgallagh@...hat.com
Subject: Re: [PATCH] iproute2: fix build failure on ppc64le
On 2/9/24 9:35 AM, Stephen Hemminger wrote:
> On Fri, 9 Feb 2024 11:24:47 +0100
> Andrea Claudi <aclaudi@...hat.com> wrote:
>
>> ss.c:3244:34: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 2 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
>> 3244 | out(" rcv_nxt:%llu", s->mptcpi_rcv_nxt);
>> | ~~~^ ~~~~~~~~~~~~~~~~~
>> | | |
>> | | __u64 {aka long unsigned int}
>> | long long unsigned int
>> | %lu
>>
>> This happens because __u64 is defined as long unsigned on ppc64le. As
>> pointed out by Florian Weimar, we should use -D__SANE_USERSPACE_TYPES__
>> if we really want to use long long unsigned in iproute2.
>
> Ok, this looks good.
> Another way to fix would be to use the macros defined in inttypes.h
>
> out(" rcv_nxt:"PRIu64, s->mptcpi_rcv_nxt);
>
since the uapi is __u64, I think this is the better approach.
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