Re: Portable printing of 'size_t' (especially with mingw for windows)

[Pádraig Brady]

On 09/11/2014 07:20 PM, Assaf Gordon wrote:
> 
> On 09/11/2014 11:48 AM, Pádraig Brady wrote:
>>>
>>> I wonder if there's a definition in "inttypes.h" or similar that would be a 
>>> correct one to use,
>>> or if there's another portable way to compile it.
>>
>> I've some notes on printing int values at:
>> http://www.pixelbeat.org/programming/gcc/int_types/
> 
> That's a very informative example, thanks!
> For reference, below are the warnings that this example program gives with 
> mingw.
> 

> ## 64bit mingw with special CFLAG, no warnings:
> $ x86_64-w64-mingw32-gcc -Wall -Wextra -D__USE_MINGW_ANSI_STDIO=1 int_types.c
> 
> ## 64bit mingw
> $ x86_64-w64-mingw32-gcc -Wall -Wextra int_types.c
> int_types.c: In function 'main':
> int_types.c:38:12: warning: unknown conversion type character 'z' in format 
> [-Wformat]

Ah right. One needs _POSIX defined, not _ISOC99_SOURCE.
I've adjusted my example to explicitly define __USE_MINGW_ANSI_STDIO instead.

thanks,
Pádraig.