Basic support for Microsoft property declarations and
references thereto.

Patch by Tong Shen!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179585 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaExceptionSpec.cpp b/lib/Sema/SemaExceptionSpec.cpp
index 26c3d35..4758718 100644
--- a/lib/Sema/SemaExceptionSpec.cpp
+++ b/lib/Sema/SemaExceptionSpec.cpp
@@ -1111,6 +1111,9 @@
     // These expressions can never throw.
     return CT_Cannot;
 
+  case Expr::MSPropertyRefExprClass:
+    llvm_unreachable("Invalid class for expression");
+
 #define STMT(CLASS, PARENT) case Expr::CLASS##Class:
 #define STMT_RANGE(Base, First, Last)
 #define LAST_STMT_RANGE(BASE, FIRST, LAST)