[Winpcap-bugs] "vsnprintf" - build error in winpcap ver. 4.0.2 built with MS Visual Studio C++

[Gianluca Varenni]

The samples for 4.0.2 do not support Visual Studio 2005/2008, albeit it 
should be rather easy to tweak the include/source files and have them 
compile.

4.1 beta5 samples should compile ok with Visual Studio 2005 (and I expect 
them to compile ok on 2008, although I haven't tried). What's the error 
message with 2008 (I suppose you are using this version of VS).

Have a nice day
GV

----- Original Message ----- 
From: "James Rhodes" <james_rhodes at ciqual.com>
To: <winpcap-bugs at winpcap.org>
Sent: Wednesday, February 04, 2009 5:54 AM
Subject: [Winpcap-bugs] "vsnprintf" - build error in winpcap ver. 4.0.2 
built with MS Visual Studio C++


> Hi there,
>
> Most likely you have encountered this, but I couldn't find a reference so 
> I'll submit a bug.
>
> 1) I downloaded the winpcap development kit for 4.0.2
>
> 2) Loaded the examples into the the latest version of MS Visual Studio C++ 
> Express
>
> 3) Build gives error:
> --------------------------------------------------
>    Compiling...
> basic_dump.c
> c:\program files\microsoft visual studio 9.0\vc\include\stdio.h(358) : 
> error C3163: '_vsnprintf': attributes inconsistent with previous 
> declaration
>         c:\program files\microsoft visual studio 
> 9.0\vc\include\stdio.h(350) : see declaration of '_vsnprintf'
> ---------------------------------------------------
>
> 4) A confilct exists in pcap-stdinc.h line 63 ("#define vsnprintf 
> _vsnprintf")
>
> 5) A (temporary) fix is to comment out that line.
>
> 6) A little dig around (with the aid of google) shows that MS has (in it s 
> latest release) decided to add it's own definition of vsnprintf...which 
> means that the supplied definition is not compatible with that ver. of the 
> MS tool.
>
> 7) Full fix conditional guard around define depending on whether the 
> symbol is already defined ???
>
> 8) Problem would seem to exist in ver. 4.1.beta5 as well
>
> Cheers,
>    James.
>
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