kicad-developers team mailing list archive

[Mark Roszko <mark.roszko@xxxxxxxxx>]

wxWidgets has a interesting maze of macros to determine how to do
printf on Windows. I wonder what it ends up doing. There is a special
case just for MINGW32 but not MINGW64.

https://github.com/wxWidgets/wxWidgets/blob/cc931612eec2e3ea49200ebff45042135f3c3f9c/include/wx/wxcrtvararg.h#L84


On Fri, Jan 3, 2020 at 10:05 AM jp charras <jp.charras@xxxxxxxxxx> wrote:
>
> Le 03/01/2020 à 15:58, Jon Evans a écrit :
> > So maybe it's a 32-bits vs 64-bits thing.
> > If you add a line like
> > #define __USE_MINGW_ANSI_STDIO 1
> > at the top of that source file, does it work?
>
> No.
> I still have the compil message:
> warning: unknown conversion type character 'z' in format [-Wformat=]
>
> >
> > On Fri, Jan 3, 2020 at 9:32 AM jp charras <jp.charras@xxxxxxxxxx
> > <mailto:jp.charras@xxxxxxxxxx>> wrote:
> >
> >     Le 03/01/2020 à 15:10, Jon Evans a écrit :
> >     > I found it defined in
> >     >
> >     C:\msys64\mingw64\include\c++\8.3.0\x86_64-w64-mingw32\bits\os_defines.h
> >     > on my machine.
> >     > @JP -- what platform did you use (Windows version / MSYS version /
> >     etc)
> >     > where you saw the issue?
> >
> >     I confirm the %zu is not working on my install.
> >
> >     m_out->Print( aNestLevel+1, "(drawings %zu)\n",
> >     aBoard->Drawings().size() );
> >
> >     generates the warning:
> >     warning: unknown conversion type character 'z' in format [-Wformat=]
> >
> >     on my install:
> >
> >     Platform: Windows 7 (build 7601, Service Pack 1), 32 bit, Little endian,
> >     wxMSW
> >     Build Info:
> >         wxWidgets: 3.1.3 (wchar_t,wx containers)
> >         Boost: 1.71.0
> >         OpenCASCADE Community Edition: 6.8.0
> >         Curl: 7.66.0
> >         Compiler: GCC 9.2.0 with C++ ABI 1013
> >
> >     And I never saw %zu working on my W7 32 bits install.
> >
> >
> >     >
> >     > On Fri, Jan 3, 2020 at 9:02 AM Seth Hillbrand <seth@xxxxxxxxxxxxx
> >     <mailto:seth@xxxxxxxxxxxxx>
> >     > <mailto:seth@xxxxxxxxxxxxx <mailto:seth@xxxxxxxxxxxxx>>> wrote:
> >     >
> >     >     On 2020-01-02 17:19, Jon Evans wrote:
> >     >
> >     >     > Hi all,
> >     >     >
> >     >     > Context:
> >     >     >
> >     https://gitlab.com/kicad/code/kicad/merge_requests/28#note_264910682
> >     >     >
> >     >     > I have heard there are issues using "%zu" format specifier on
> >     >     > Windows/mingw, because mingw links against a very old
> >     Windows library
> >     >     > that does not support the C99 standard.
> >     >     >
> >     >     > I have also heard that this isn't an issue anymore because of
> >     >     > __USE_MINGW_ANSI_STDIO in wxWidgets.
> >     >     >
> >     >     > I tried to reproduce this problem on my Windows 10 machine but
> >     >     couldn't
> >     >     > -- using %zu works fine.
> >     >     >
> >     >     > Does anyone know if this is still a problem on any of our
> >     supported
> >     >     > platforms?
> >     >     >
> >     >     > Thanks,
> >     >     > -Jon
> >     >
> >     >     I learned that this was a problem from JP.  See commit
> >     >     https://gitlab.com/kicad/code/kicad/commit/17b18637f
> >     >
> >     >     Perhaps he can shed some light on the specifics.
> >     >
> >     >     -S
> >     >
> >     >
> >     >     Seth Hillbrand
> >     >     KiCad Services Corporation
> >     >     https://www.kipro-pcb.com
> >     >     +1 530 302 5483 | +1 212 603 9372
> >     >
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> >
> >     --
> >     Jean-Pierre CHARRAS
> >
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>
>
> --
> Jean-Pierre CHARRAS
>
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-- 
Mark