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Tue, 26 Jan 2010 19:47:43 +0100
On Mon, Jan 25, 2010 at 10:57:07AM +0100, Bruno Haible wrote:
> Robert Millan wrote:
> > > - In the average case, you can get away with 1 strftime call instead of
> > > 2,
> > > if you preallocate a buffer on the stack:
> > > char buf;
> > > len = strftime (buf, sizeof (buf), "%c", loctime) + 1;
> > > In the case where 256 bytes are not enough, the function will need
> > > 3 strftime calls instead of 1, but this case should be pretty rare
> > > (even in Chinese and GB18030 encoding, 64 characters should be enough
> > > for a date + time display).
> > What about http://www.gnu.org/prep/standards/standards.html#Semantics ?
> > Avoiding arbitrary limits is a good thing IMO.
> I'm not suggesting to introduce an arbitrary limit, but rather a threshold
> below which the implementation is more efficient that above the threshold.
Ok then. But if I preallocate a buffer on the stack, then xctime() can't
return it. I suppose you want it to preallocate on heap?
"Be the change you want to see in the world" -- Gandhi