On Wednesday 29 of February 2012 13:54:40 ik wrote: > On Wed, Feb 29, 2012 at 14:44, LacaK <la...@zoznam.sk> wrote: > > Hi *, > > I found small incompatibility between Delphi and FPC. > > > > This code: > > var a,b: array of byte; > > begin > > 适适 setlength(a,2); > > 适适 b:=copy(a,2,1); //<--HERE "Range check error" in FPC, Delphi returns > > empty array > > end; > > > > Delphi documentation says: > > "If Index is larger than the length of S, Copy returns an empty string or > > array." > > http://docwiki.embarcadero.com/VCL/en/System.Copy > > > > Can it be fixed also in FPC? > > I think it's a Delphi bug to act like that. You must provide a length > that is not bigger in size. It's up to you the developer. > Otherwise you might have more then one type of buffer overflows in your > code ! > > The way Delphi solved it, is by taking the responsibility from the > developer, and made the code a bit slower. > And as I said, I don't think it's a good idea
+1 ... @lacak, better fix your code. I don't like to be delphi compatibile with such things. zeljko
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