Check whether lasti (an instruction offset) falls outside bounds
and whether it is a line number that should be traced. Returns
a line number if it should be traced or -1 if the line should not.
If lasti is not within bounds, updates bounds.
Availability: 2.5,2.6
Check whether lasti (an instruction offset) falls outside bounds and whether it is a line number that should be traced. Returns a line number if it should be traced or -1 if the line should not.
If lasti is not within bounds, updates bounds. Availability: 2.5,2.6