Hmm the sample is wrong... But you got the idea... Should be (unsigned long
long) for llu
Le 29 avr. 2015 1:26 AM, "Tanguy Pruvot" <tanguy.pru...@gmail.com> a écrit :
> For this case i generally cast the param to the biggest possible type.
>
> printf("llu", (uint64_t) val);
> Le 29 avr. 2015 12:13 AM, "Matt Whitlock" <busy...@mattwhitlock.name> a
> écrit :
>
>> On Tuesday, 28 April 2015, at 3:55 pm, Matt Whitlock wrote:
>> > I'll work on finishing the Large File Support in Bionic and adding
>> support for _FILE_OFFSET_BITS==64.
>>
>> The Bionic devs have already finished Large File Support, including
>> support for _FILE_OFFSET_BITS==64, in the latest Bionic, so there's nothing
>> further to contribute upstream.
>>
>> If you don't want BusyBox to support large files on older versions of
>> Bionic, I can live with that. My patch works just fine for my purposes.
>>
>>
>> Would you consider a patch to BusyBox that adds an explicit cast to off_t
>> wherever values of st_size are used with the OFF_FMT format specifier?
>> Without such a cast, when compiling without LFS on Bionic, we get warnings
>> like:
>>
>> archival/tar.c: In function 'writeTarHeader':
>> archival/tar.c:448:5: warning: format '%lu' expects argument of type
>> 'long unsigned int', but argument 3 has type 'long long int' [-Wformat=]
>> fileName, statbuf->st_size);
>> ^
>>
>> I don't know if GCC is smart enough to cast the actual argument to the
>> expected type. If it isn't, then passing a long long argument to a variadic
>> function, where a long is expected, results in Undefined Behavior.
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>>
>
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