* Rich Felker <dalias@aerifal.cx> [2012-08-15 10:36:40 -0400]:
> On Wed, Aug 15, 2012 at 03:32:57PM +0200, Szabolcs Nagy wrote:
> > it seems warn(0) and err(1,0) segfault
> > (they should handle fmt==0 before passing
> > it to vfprintf)
> > and they do not print the ': ' nor the
> > __progname
> 
> Thanks for the report. This should be easy to fix. By the way, is it
> worth making these functions take a lock on the file for the whole
> operation (to make it atomic)? I'm leaning towards no, since they seem
> to only be used in legacy junk that's all single-threaded anyway.

i dont mind if the file is not locked although it would not
itroduce too much overhead..

the ": " is not fixed, i think that should be added