Path: utzoo!attcan!uunet!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!rpi!uupsi!sunic!tut!santra!hemuli.tik.vtt.fi!tml
From: tml@hemuli.tik.vtt.fi (Tor Lillqvist)
Newsgroups: comp.unix.wizards
Subject: Re: Obscure code.
Message-ID: <4624@hemuli.tik.vtt.fi>
Date: 28 Mar 90 20:33:49 GMT
References: <423@venice.SEDD.TRW.COM> <1990Mar28.131215.14795@ncsuvx.ncsu.edu>
Organization: Technical Research Centre of Finland, Laboratory for Information Processing (VTT/TIK)
Lines: 17

In article <1990Mar28.131215.14795@ncsuvx.ncsu.edu> rcb@ccpv1.ncsu.edu (Randy Buckland) writes:
>waldorf@venice.SEDD.TRW.COM (jerry waldorf) writes:

>>	_strbuf._flag = _IOREAD | _IOSTRG;

>_doscan is an internal routine of {scanf, fscnaf, sscanf}. 

>for sscanf a fake FILE struct is built to
>allow it to call the same routine.

One more point if you are porting to HP-UX: There is no _IOSTRG flag,
instead you should put _NFILE in _strbuf._file (i.e. an illegal file
descriptor).  Or something like that, disassemble the sscanf code
(with adb) to be sure.
-- 
Tor Lillqvist,
working, but not speaking, for the Technical Research Centre of Finland