2009/6/25 Jonas Maebe <jonas.ma...@elis.ugent.be>: > > On 25 Jun 2009, at 20:33, Inoussa OUEDRAOGO wrote: > >> 2009/6/25 Jonas Maebe <jonas.ma...@elis.ugent.be>: >>> >>> On 25 Jun 2009, at 20:14, Inoussa OUEDRAOGO wrote: >>> >>>> as it makes one doubtfull about >>>> the correctness of the program( In my case I debugged the program to >>>> be sure that the "good" value was assigned). >>> >>> When it's changed, you will get the warning/error when assigning this >>> value >>> to an int64 and then those cases can be debugged. >> >> and that seems more accurate to me > > It's equally accurate. A hex number does not contain any sign information, > so both interpretations are valid.
so it could be parsed as QWord accurately and assigned to a QWord (typed) variable without warning, as it is an assignment between two QWORD values. >>> to an int64 and then those cases can be debugged. It's the same when we >>> changed from parsing $80000000-$FFFFFFFF as a longint to parsing it as a >>> cardinal. Suddenly a whole bunch of code no longer worked correctly >>> anymore >>> then either, and we got a bunch of questions why code no longer compiled >>> or >>> produced warnings. >> >> IMHO warnings/errors should be reported as one is actually in a "out >> of range" case. But if some code depends on this ( such as a bit mask >> ) changing the behavior of the compiler can effectively be harmfull. >> I think that should be up to the people (ab)using the parser this way >> to correct their code by doing a explicit typecast. > > There is no abuse of the parser. The parser has, since the very first moment > that int64 and qword were supported in FPC, always parsed such numbers as > int64. So people using it like that, are using it as designed. In fact, > before Delphi supported uint64, it also parsed such values as int64. Just to clear out things : * I am not for a blind compatibility with Delphi * I am not a compiler dev guy, so I could be dead wrong * I do want to understand the basics, the fondaments of such a decision ( to parsed as Int64 ) -- Inoussa O. _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
