[fpc-devel] negative TDateTime values and MinDateTime

LacaK lacak at zoznam.sk
Tue Aug 2 13:45:05 CEST 2011

Hi ,

I have problem with comparing negative datetime values in fcl-db test 
suite (accessed as variants).
It is related to VariantToDate function (in cvarutil.inc), where result 
is tested against MinDateTime.

For example:
  v1 :=strtodatetime('01.01.0001 12:00:00');
  v2 :=strtodatetime('01.01.0001 13:00:00');
  if v2>v1 then ... //<--exception here

Exception is raised because v2<MinDateTime { 01/01/0001 12:00:00.000 AM }.
But logicaly on timeline is "v2" after "v1".

What do you think, can we change MinDateTime from -693593.0 to -693594.0;
(to accept 01/01/0001 23:59:59.999)


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