linux-kernel - Re: [PATCH] Doc: networking: txtimestamp: fix printf format warning

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Message-ID: <A115163C-C207-4BCA-BE07-3D14BD5CC7D0@gmail.com>
Date:	Thu, 04 Jun 2015 20:05:58 +0200
From:	Frans Klaver <fransklaver@...il.com>
To:	Richard Cochran <richardcochran@...il.com>
CC:	Jonathan Corbet <corbet@....net>, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Doc: networking: txtimestamp: fix printf format warning

On 4 June 2015 19:36:12 CEST, Richard Cochran <richardcochran@...il.com> wrote:
>On Wed, Jun 03, 2015 at 09:38:39PM +0200, Frans Klaver wrote:
>> Documentation/networking/timestamping/txtimestamp.c: In function
>‘__print_timestamp’:
>> Documentation/networking/timestamping/txtimestamp.c:99:3: warning:
>format ‘%ld’ expects argument of type ‘long int’, but argument 3 has
>type ‘int64_t’ [-Wformat=]
>>    fprintf(stderr, "  (%+ld us)", cur_ms - prev_ms);
>> 
>> int64_t differs per platform, so a cast is required.
>
>No cast is needed.  Use PRId64 in the format string instead.

Wow, I can't believe I've never run into those... 

Will resend. 

Thanks,
Frans 


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