FORK_FAILURE      264 src/subshell/common.c         my_exit (FORK_FAILURE);
FORK_FAILURE      351 src/subshell/common.c         my_exit (FORK_FAILURE);
FORK_FAILURE      402 src/subshell/common.c     my_exit (FORK_FAILURE);
FORK_FAILURE     1448 src/subshell/common.c             if (WIFEXITED (status) && WEXITSTATUS (status) != FORK_FAILURE)