Marco van de Voort wrote:
var
v : cardinal;
begin
v:=100;
inc(v,-1);
end.
The reason is that -1 is in fact an addition of $ffffffff resulting in the
carry flag being set and therefor an overflow.
For cardinal IMHO not-a-bug?
I think it's a bug for cardinals and other unsigned ints also (as long as the
result is in the range of the result variable)
-1 is not a valid cardinal -> out of range -> rangecheck error.
But on the other hand Dec(v,1) is fine, so Inc(v,-1) should also work.
Colin
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