Check for casts to an incomplete type in C.  Improves diagnostics for cast to
incomplete union (PR5692) and incomplete enum, and fixes obscure
accepts-invalid on cast to incomplete struct.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108630 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed