On Fri, 6 Jul 2012 14:35:52 +1100 Alexander Klenin <[email protected]> wrote:
> Issue http://bugs.freepascal.org/view.php?id=22365 was about the > compilation error > when the TAChart code is compiled by FPC trunk. > > I did not notice the issue in time, because bug tracker is unusably slow, > so I use Google Alerts to track bugs. This usually works, but sometimes causes > a delay of a few days before Google notification. Sorry for that. > > The issue is resolved, so it is impossible to discuss -- this is why I > start discussion here. > I Cc'd original reporter -- hopefully he does not mind. > > I am grateful for Mattias for stepping up and resolving the issue, > but I'd appreciate some discussion for such controversial changes. > > Regarding the specifics of the problem -- FPC trunk (suddently?) > stopped compiling > TAChart source. Affected code did not change recently, so this is > either a FPC regression > or some general issue like out-of-date object files, wrong > installation paths leading to version conflicts etc. > > So I have a few questions/suggestions: > 1) Can anybody (Mattias?) reproduce this? yes > 2) Why did this suddently happened? Why do not all other trunk users complain? I guess tachart uses a seldom combination of generics, implementation uses and operators. > 3) Can this be isolated to a smaller testcase and reported as an FPC bug? Maybe these hints can help to create a smaller example: TGenericChartMarks is a generic, which uses in its implementation some identifiers defined by the uses section of the implementation section. operator +(const A: TPoint; B: TSize): TPoint of unit TAGeometry and TCustomChartSource of unit TACustomSource > 4) Alternatively, is this an intentional backwards-incompatible change > in FPC? Should it be documented as such? > 5) If the bug is too subtle/hard to fix, at least the workaround in TAChart > code > should be clearly marked as such -- there are a few examples in > TAChart, search for 'workaround' Mattias -- _______________________________________________ Lazarus mailing list [email protected] http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
