From: Matt Kraai <kraai@ftbfs.org>
Date: Tue, 26 Feb 2013 20:13:05 GMT
Subject: Re: [PATCH] Improve QNX support in GIT
Message-ID: <20130226201305.GA3502@ftbfs.org>

Hi,

Please include me in the Cc field, since I'm not subscribed to the
list.

Mike Gorchak wrote:
> Do you have a testcase for this (without using git codebase)? I wrote
> numerous resource managers since QNX 6.0 using threads and fork()s for
> daemonization in different order and never experienced a problems.
> There can be issues with pipes in case of external command run.

I just created the following one:


#include <pthread.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <process.h>

static void *
start_routine (void *arg)
{
  return NULL;
}

int
main (int argc, char **argv)
{
  int err;

  if ((err = pthread_create (NULL, NULL, start_routine, NULL)))
    {
      fprintf (stderr, "foo: pthread_create failed: %s\n", strerror (errno));
      return 1;
    }

  if (fork () == -1)
    {
      fprintf (stderr, "foo: fork failed: %s\n", strerror (errno));
      return 1;
    }

  return 0;
}


When I compile and run it on either QNX 6.3.2 or QNX 6.5.0, it
produces the following output:

 foo: fork failed: Function not implemented

If I remove the call to pthread_create, it doesn't output anything and
exits successfully.