The explain_wait_or_die function
is used to call the wait(2) system
call. On failure an explanation will be
printed to stderr,
obtained from explain_wait(3),
and then the process terminates
by calling exit(EXIT_FAILURE).
This function is intended to be used in a fashion
similar to the following example:
explain_wait_or_die(status);
status
The status, exactly as to be passed to the wait(2) system call.
Returns:
This function only returns on success.
On failure, prints an explanation and exits.