Lazily deserialize the "first' friend declaration when deserializing a class
declaration. This PCH a little lazier, and breaks a deserialization cycle that
causes crashes with modules enabled.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@184904 91177308-0d34-0410-b5e6-96231b3b80d8
8 files changed