signals an error if the expression (cond) is 0. arg is the offending object, subr is the string naming the subr, and pos indicates the position or type of error. pos can be one of
ARGn(> 5 or unknown ARG number)
WNA(wrong number of args)
Error checking is not done by
ASRTER if the flag
is defined. An error condition can still be signaled in this case with
a call to
wta(arg, pos, subr).
goto label if the expression (cond) is 0. Like
ASRTGO does is not active if the flag
RECKLESS is defined.