The ModuleInfo struct in the user visible object.di does not match the implementation in object_.d, which disables some functionality eg the ability to find the classes in a module from user code. The two files need synchronizing to make sure everything that needs to be accessible is. http://dsource.org/projects/druntime/browser/trunk/src/object_.d#L1267 http://dsource.org/projects/druntime/browser/trunk/import/object.di#L226 Note the absence of the localClasses property in object.di, among other missing properties.
Fixed DMD1.061 and DMD2.046.