Hi Michael On 22 Feb 2012, at 13:31, Michael Bulford wrote:
> There is an error in the Turbo parser at line 14490. Here is this line: > > 14490 IF var%>0 > AND (struct%(var%)&&directive_mask%)=directive_mask% > > Both sides of the "AND" get to be evaluated. Although var% is tested for > being non > negative on the left hand side, the right hand side will be evaluated in any > event. Should var% happen to be > negative, then struct%(var%) would be outside of the array bounds and will > crash SuperBASIC. You are quite right. But how did you get var%=-3? Does this imply another mistake in Parser? > The above line needs > to be re written so that the right hand side will only be evaluated if the > left > hand side evaluates to true. Here is my > suggested work-around: > > 14444 LOCal both : > REMark (if needed) > 14488 both = 0 > 14489 IF var%>0:IF > (struct%(var%)&&directive_mask%)=directive_mask% : both = 1 > 14490 IF both > My solution is: 14490 IF var%>0 14494 IF (struct%(var%)&&directive_mask%)=directive_mask%:Parse_Directive:ELSE Skip_Stmt Cheers George _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
