Unusual cast required after upgrading to version 4.0.0

[fabich]

Hi

After upgrading to version 4.0.0 (AutoMapper 10) we received the following error:

The binary operator Equal is not defined for the types 'System.DateTime' and 'System.Nullable`1DateTime

Example map:

Expression = x => (firstReleaseDate == null || x.StartDate >= firstReleaseDate) &&
                                      (lastReleaseDate == null || x.StartDate <= lastReleaseDate)

Where firstReleaseDate and lastReleaseDate are DateTime? and x.StartDate is DateTime

"Weird" cast map that solved the issue:

Expression = x => ((DateTime?)firstReleaseDate == null || (DateTime?)x.StartDate >= (DateTime?)firstReleaseDate) &&
                              ((DateTime?)lastReleaseDate == null || (DateTime?)x.StartDate <= (DateTime?)lastReleaseDate)

[BlaiseD]

You are correct - I broke it fixing Issue #79, another local variable issue. There's a preview version on nuget with a fix.

Thanks for posting.