Hi, I was wondering whether there is an easy way for a front end to detect whether an integer overflow had occurred? Currently the GNU Modula-2 front end will detect cardinal number and integer subrange out of bound (during assignment, INC and DEC). However it does not detect overflows for these data types during arithmetic expressions.
I guess it is not particularly difficult to wrap front end '-', '+', '*' with checks similar to those found here: http://www.fefe.de/intof.html albeit with the cost of a significant code explosion. Is it possible for subsequent TREEs to be able to detect whether the carry bit has been set (for non constant tree expressions) at runtime? regards, Gaius
