From: roland DOT nilsson AT communique DOT se (Roland Nilsson)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: C-style FILE IO problems..
Date: 21 Dec 1996 11:12:19 GMT
Organization: -+- Private -+-
Lines: 30
Message-ID: <59ggmj$3l@news.luth.se>
References: <59enik$foo AT news DOT luth DOT se> <32BB5A76 DOT 27EC1FC AT alcyone DOT com>
NNTP-Posting-Host: x40.communique.se
Mime-Version: 1.0
Content-Type: Text/Plain; charset=US-ASCII
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

In article <32BB5A76 DOT 27EC1FC AT alcyone DOT com>, max AT alcyone DOT com says...
>
>Roland Nilsson wrote:
>
>> I've been using djgpp for a few months, and has experienced some
>> problems during heavy usage of C-style FILE io. It seems fread()
>> and fwrite() cannot handle reads of any size, they fail in certain
>> situations. I have not been able to find any logical pattern, they
>> just bomb sometimes. Are there any restrictions on FILE usage which
>> could explain this behaviour (maximum transfer sizes, reads at odd
>> positions, etc) ???
>
>How large?
>
>The only thing that comes to mind offhand:  Are you trying to read binary
>data?  If so, are you sure you've opened the file in binary mode?  (If not,
>this would likely explain your problems, depending on your definition of
>"they just bomb sometimes.")

Yes, I'm parsing binary files. I believe C FILE i/o is always in raw
mode. The only fopen() flags available are those relating to i/o
direction and overwrite, according to my djgpp function list.
I usually fopen() with "r".

----------------------------------------------------------- - -  -
      Roland Nilsson, Pitea, SWEDEN
  --/         member of the       \--
 --(  Avante OS Development Group  )--  www.mediaport.org/~wierdo/
  --\     (project coordinator)   /--