[tcpdump-workers] snprintf in libpcap

Guy Harris gharris at sonic.net
Mon Mar 2 17:09:00 EST 2020


On Mar 2, 2020, at 1:51 PM, Guy Harris via tcpdump-workers <tcpdump-workers at lists.tcpdump.org> wrote:

> On Mar 2, 2020, at 1:22 PM, Michael Richardson via tcpdump-workers <tcpdump-workers at lists.tcpdump.org> wrote:
> 
>> Back in 2016, we note in the CHANGES:
>>  Replace sprintf() with pcap_snprintf().
>> 
>> but, we have no prototype for this, and apparently no definition, and we use
>> snprintf() everywhere.  I'm trying to merge Ray's changes which are rebased
>> into pull request #914.
>> 
>> I think that we just use "snprintf()" now.
> 
> In the master branch, we require versions of Visual Studio that support a C99-compatible snprintf(), and we also require C99-compatible snprintf() support on UN*Xes.
> 
> Earlier versions 1) had pcap_snprintf() and 2) either declared it and provided it, or just #defined pcap_snprintf to be snprintf.

Or are you thinking of asprintf()?  I didn't *think* that was available on Windows, so we would supply our own implementation, but AppVeyor appears to be finding it in recent builds.


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