----- "michael vancanneyt" <michael.vancann...@wisa.be> schreef:
> On Mon, 22 Nov 2010, Andrew Brunner wrote: > > > I was looking at the code for Tag property in classes unit and > noticed I can't safely use Tag to keep runtime pointers (at least on a > 64 bit compile). What is the likelihood of getting tags changed to > support universal access under 64/32 bit compiles? > > > > What is the logic behind the shortfall? I suspect just legacy and it > could be easily fixed. > _______________________________________________ > > The logic is that it is bad programming to use an integer to store a > pointer. > And we don't want to encourage bad programming. > > Yes, I know it's easy, and yes I know it's common practice. > Neither make it right to do so. > +6499999999 Never EVER fall into the VB bullshit trap that is the Tag property. Related to that matter, Windows/delphi has a few of these "Data pointers", especially the stuff that is lower-level and is used to invoke the winapi with as a parameter (callbacks anyone?). Always try to stay clear of it as much as possible, because it does encourage and even invite bad programming. > We'll fix the issue as the upcoming Delphi 64-bit - unfortunately - > forces us > to follow suit. sad to read this part though... kind regards, Dimitri Smits _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
