> 	I see, should we put something like this then?  or is NetBSD always
> 	safe? (we may need some comment at least)
> 
> 	if (getuid() != geteuid() || getgid() != getegid())
> 		setbuf(fp, NULL)

i don't know if netbsd is ever safe, or always safe.

at least one mainstream unix vendor did the above.