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Re: [PATCH] http: fix some printf format warnings on 32-bit builds

From
Lars Schneider <larsxschneider@gmail.com>
Date
Nov 13, 2015, 08:46 UTC
Message-ID
<71B4BDE3-153C-4918-A23A-F45F0228A988@gmail.com>
In-Reply-To
<56437F96.2070209@ramsayjones.plus.com>
On 11 Nov 2015, at 18:49, Ramsay Jones <ramsay@ramsayjones.plus.com> wrote:
Show 33 quoted lines
> 
> 
> On 11/11/15 02:00, Stefan Beller wrote:
>> On Tue, Nov 10, 2015 at 5:22 PM, Eric Sunshine <sunshine@sunshineco.com> wrote:
>>> On Tue, Nov 10, 2015 at 7:23 PM, Ramsay Jones
>>> <ramsay@ramsayjones.plus.com> wrote:
>>>> Commit f8117f55 ("http: use off_t to store partial file size",
>>>> 02-11-2015) changed the type of some variables from long to off_t.
>>>> The 32-bit build, which enables the large filesystem interface
>>>> (_FILE_OFFSET_BITS == 64), defines the off_t type as a 64-bit
>>>> integer, whereas long is a 32-bit integer. This results in a couple
>>>> of printf format warnings.
>>>> 
>>>> In order to suppress the warnings, change the format specifier to use
>>>> the PRIuMAX macro and cast the off_t argument to uintmax_t. (See also
>>>> the http_opt_request_remainder() function, which uses the same
>>>> solution).
>>> 
>>> I just ran across the problem when building 'next' on my Mac and was
>>> about to investigate, so am happy to find that the work has already
>>> been done. Thanks.
>>> 
>>> My machine is 64-bit, though, so perhaps it's misleading to
>>> characterize this as a fix for 32-bit builds. In particular, off_t is
>>> 'long long' on this machine, so it complains about the "long" format
>>> specifier.
>> 
>> +Lars
>> 
>> I wonder if 32 bit compilation can be part of travis.
>> 
> 
> Did this warning show up on the OS X build?

Yes, I added CFLAGS="-Werror=format" to the my experimental TravisCI build and it breaks the build on OS X. See here (you need to scroll all the way down): https://travis-ci.org/larsxschneider/git/jobs/90899656

BTW: I tried to set "-Werror" but then I got a bunch of macro redefined errors like this:
./git-compat-util.h:614:9: error: 'strlcpy' macro redefined [-Werror]
Is this a known issue? Is this an issue at all?

Thanks, Lars

Previous: Ramsay JonesNext: Eric Sunshine
Message 7 of 19 in “http: fix some printf format warnings on 32-bit builds”
  1. http: fix some printf format warnings on 32-bit buildsRamsay Jones, Nov 11, 2015
  2. Eric SunshineNov 11, 2015
  3. Stefan BellerNov 11, 2015
  4. Lars SchneiderNov 11, 2015
  5. Stefan BellerNov 11, 2015
  6. Ramsay JonesNov 11, 2015
  7. Lars SchneiderNov 13, 2015
  8. Eric SunshineNov 13, 2015
  9. Torsten BögershausenNov 13, 2015
  10. Lars SchneiderNov 13, 2015
  11. Ramsay JonesNov 13, 2015
  12. Lars SchneiderNov 14, 2015
  13. Ramsay JonesNov 11, 2015
  14. Eric SunshineNov 11, 2015
  15. Jeff KingNov 11, 2015
  16. Ramsay JonesNov 11, 2015
  17. Torsten BögershausenNov 12, 2015
  18. Ramsay JonesNov 12, 2015
  19. Andreas SchwabNov 12, 2015

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