From: Johan 't Hart <johanthart@gmail.com>
Date: Fri, 21 Aug 2009 21:18:40 GMT
Subject: Re: [PATCH 03/14] Define SNPRINTF_SIZE_CORR=1 for Microsoft Visual C++
Message-ID: <4A8F0F30.3020002@gmail.com>
In-Reply-To: <7vr5v4dgz0.fsf@alter.siamese.dyndns.org>

Junio C Hamano schreef:
> Marius Storm-Olsen <mstormo@gmail.com> writes:
> 
>> From: Frank Li <lznuaa@gmail.com>
>>
>> The Microsoft C runtime's vsnprintf function does not add NUL at
>> the end of the buffer.

> So if my reading is correct, it is not about "does not add NUL at the end"
> at all; it is "adds NUL beyond the end of given output buffer."
> 

As far as I know, the windows implementation does not add a terminating 
NUL when the string to write is greater or equal to the given buffer 
size. Otherwise it does add the NUL.
Same as for strncpy() on windows.
In my experience the windows implementation does never write behind the 
given buffer, not even a terminating zero.