text: /* Copyright (C) 1991-2016 Free Software Foundation, Inc.
     This file is part of the GNU C Library.
  
     The GNU C Library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public
     License as published by the Free Software Foundation; either
     version 2.1 of the License, or (at your option) any later version.
  
     The GNU C Library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
     License along with the GNU C Library; if not, see
     <http://www.gnu.org/licenses/>.  */
  
  #include <errno.h>
  #include <sys/wait.h>
  #include <sys/types.h>
  
  /* Wait for a child to exit.  When one does, put its status in *STAT_LOC and
     return its process ID.  For errors return (pid_t) -1.  If USAGE is not nil,
     store information about the child's resource usage (as a `struct rusage')
     there.  If the WUNTRACED bit is set in OPTIONS, return status for stopped
     children; otherwise don't.  */
  pid_t
  __wait3 (__WAIT_STATUS_DEFN stat_loc, int options, struct rusage *usage)
  {
    if ((options & ~(WNOHANG|WUNTRACED)) != 0)
      {
        __set_errno (EINVAL);
        return (pid_t) -1;
      }
  
    __set_errno (ENOSYS);
    return (pid_t) -1;
  }
  stub_warning (wait3)
  
  weak_alias (__wait3, wait3)
  