xv6

port of xv6 to x86-64
git clone http://frotz.net/git/xv6.git
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zombie.c (215B)

      1 // Create a zombie process that 
      2 // must be reparented at exit.
      3 
      4 #include "types.h"
      5 #include "stat.h"
      6 #include "user.h"
      7 
      8 int
      9 main(void)
     10 {
     11   if(fork() > 0)
     12     sleep(5);  // Let child exit before parent.
     13   exit();
     14 }