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      1 /* Check that exiting from a parent thread does not kill the child.
      2 #progos: linux
      3 */
      4 
      5 #include <stddef.h>
      6 #include <stdlib.h>
      7 #include <stdio.h>
      8 #include <limits.h>
      9 #include <unistd.h>
     10 #include <sched.h>
     11 #include <signal.h>
     12 #include <errno.h>
     13 #include <sys/types.h>
     14 #include <sys/wait.h>
     15 
     16 int
     17 process (void *arg)
     18 {
     19   int i;
     20 
     21   for (i = 0; i < 50; i++)
     22     if (sched_yield ())
     23       abort ();
     24 
     25   printf ("pass\n");
     26   return 0;
     27 }
     28 
     29 int
     30 main (void)
     31 {
     32   int pid;
     33   long stack[16384];
     34 
     35   pid = clone (process, (char *) stack + sizeof (stack) - 64,
     36 	       (CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND)
     37 	       | SIGCHLD, "ab");
     38   if (pid <= 0)
     39     {
     40       fprintf (stderr, "Bad clone %d\n", pid);
     41       abort ();
     42     }
     43 
     44   exit (0);
     45 }
     46