The explain_strndup_or_die function is used to call the
strndup(3) system call. On failure an explanation will be printed
to stderr, obtained from the explain_strndup(3) function,
and then the process terminates by calling exit(EXIT_FAILURE).
The explain_strndup_on_error function is used to call the
strndup(3) system call. On failure an explanation will be printed
to stderr, obtained from the explain_strndup(3) function,
but still returns to the caller.
data
The data, exactly as to be passed to the strndup(3) system call.
data_size
The data_size, exactly as to be passed to the strndup(3) system
call.
RETURN VALUE
The explain_strndup_or_die function only returns on success, see
strndup(3) for more information. On failure, prints an explanation
and exits, it does not return.
The explain_strndup_on_error function always returns the value
return by the wrapped strndup(3) system call.
EXAMPLE
The explain_strndup_or_die function is intended to be used in a
fashion similar to the following example: