FORK_FAILURE      297 src/subshell/common.c         my_exit (FORK_FAILURE);
FORK_FAILURE      432 src/subshell/common.c         my_exit (FORK_FAILURE);
FORK_FAILURE      491 src/subshell/common.c     my_exit (FORK_FAILURE);
FORK_FAILURE     1980 src/subshell/common.c             if (WIFEXITED (status) && WEXITSTATUS (status) != FORK_FAILURE)