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Tom Spindler --> current-users (2006-06-29 18:24:19 -0700):
[...]
> However, I don't think it's the compiler - my -current system with
> gcc 3.3.6 produces a similarly broken screen. What's worrisome is this:
> 
> on older -current:
> - both sockets and fifos usable. let's take fifos.
> configure: checking select return value...
> - select is ok
> 
> on newer:
> - both sockets and fifos usable. let's take fifos.
> configure: checking select return value...
> - select can't count
> 
> This definitely seems like a regression.

The attached file is a stripped down version of the program which
causes screen's configure script to print this "select can't count"
message. It doesn't matter whether it's built using gcc 3 or 4: the
resulting executable returns 1 on a system from 2006-06-25, but returns
0 on that from 2006-06-19.


HTH somehow,

Jukka

-- 
bashian roulette:
$ ((RANDOM%6)) || rm -rf ~

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#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

char *nam = "/tmp/conftest20904";

main()
{
  fd_set f;

  (void)alarm(5);
  if (mkfifo(nam, 0777))
    exit(1);
  close(0);
  if (open(nam, O_RDWR | O_NONBLOCK))
    exit(1);
  if (write(0, "TEST", 4) == -1)
    exit(1);

  FD_SET(0, &f);
  if (select(1, &f, 0, 0, 0) == -1)
    exit(1);
  if (select(1, &f, &f, 0, 0) != 2)
    exit(1);
  exit(0);
}


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