LLDB's TypeSystems Part 2: PDB

In my previous post, I described implementing PDB parsing as a can of worms. That might have been a bit of an understatement. PDB has been one "oh, it's gonna be twice as much work as I thought" after another. Implementing it has revealed many of the same issues as the TypeSystem itself: lack of documentation, cryptic implementations, poor naming schemes, and unclear expectations. Despite all…