Consider the simple type
Innocuous, right? Well look at what Reflector has to say about the May 2009 CTP version...
Most of this is tagged as
[CompilerGenerated] -- with some surprising omissions, like
which makes filtering out what is written vs what is generated for coverage analysis purposes rather more tedious than it might be. Arguably, in a unit test using the type, the latter two should get exercised anyway, but having the
__DebugDisplay() method left over seems like a bit of an oversight.
By way of comparison, the Feb 2010 CTP yields
which is broadly similar, but differs in detail (such as the
Tags values and the
DebuggerDisplay attributes -- and the bug about
__DebugDisplay not having the
CompilerGenerated attribute is fixed.