From: mcastle AT cs DOT umr DOT edu
Subject: setmode(fileno(stdin),O_BINARY) prob under dv 2.42
To: djgpp AT sun DOT soe DOT clarkson DOT edu (Djgpp Mailing List)
Date: Tue, 5 Jan 93 10:06:57 CST

These following programs will both work under dos.
The first will work under desqview 2.42
The second will not (locks up, ^c wont work) and have to close the window.

test.c:
#include <stdio.h>
#include <fcntl.h>

int main(void)
{
  char line[80];

  while ( gets(line) != NULL )
  {
    puts(line);
	fflush(stdout);
  }
  return 0;
}


test2.c:
#include <stdio.h>
#include <fcntl.h>

int main(void)
{
  char line[80];

  setmode(fileno(stdin), O_BINARY);

  while ( gets(line) != NULL )
  {
    puts(line);
    fflush(stdout);
  }
  return 0;
}


Well, actually the second will work if you do:

go32 a.out < inputfile

but without an inputfile, it dies when int 0x21 is called from read() (which
gets() calls).  

Since it works with stdin is being redirected, but not otherwise, I'm 
wondering if it's a problem with buffering?

I didn't *notice* any difference in the flow of the program under debug32
when redirecting stdin and not, but that doesn't mean much.  It could be
a problem on the turbo-c side.

I'm kinda at a loss as to what to do, and since I have neither the source
for the libs or go32 on line, I can't do much but report it for now. 

It's not that big of a problem, just a bit annoying when I have to close a
window because I forgot to supply a command line option, or redirect input
into a program (such as the fsf ports Eric did).  At least it's not locking
up the entire machine :->

mrc

 
-- 
Mike Castle .-=NEXUS=-.  Life is like a clock:  You can work constantly
  mcastle AT cs DOT umr DOT edu     and be right all the time, or not work at all
S087891 AT UMRVMA DOT UMR DOT EDU   and be right at least twice a day.  -- mrc
    We are all of us living in the shadow of Manhattan.  -- Watchmen