select & pipe does not work!

Fri May 16 06:22:00 GMT 1997

Hi, 
I encountered a problem while porting some software. The select call
(waiting for a pipe) returns immediate even thougt there is no data
available from the pipe.
Then I tried a small test program (see below) and encountered the same
problem.
pipetest.c
------------------------------------------------------------------------
------------------------
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/select.h>
#include <sys/types.h>
main ()
{
 int result;
 int pipeFd [2];
 struct fd_set rset;
 if (pipe( pipeFd) < 0) {
 printf ("Error %d creating pipe\n", errno);
 exit (-1);
 }
 FD_ZERO (&rset);
 FD_SET (pipeFd[0], &rset);
 result = select (pipeFd[0]+1, &rset, (fd_set*)0,
 (fd_set*)0, (struct timeval*)0);
 switch (result) {
 case 0:
 printf ("Select: received 0 ?!?\n");
 break;
 case -1:
 printf ("Select: Error occured\n");
 break;
 default:
 printf ("normal event\n");
 break;
 }
return (0);
}
------------------------------------------------------------------------
------------------------
compiled whith:
gcc -g -o pipetest pipetest.c
I've installes b18 on NT4.0. The same code on a UN*X box works fine.
Has anyone any ideas?
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