[coroutines] Creation of promise object, lookup of operator co_await, building
of await_* calls, and AST representation for same.

llvm-svn: 251387
diff --git a/clang/lib/Sema/SemaExceptionSpec.cpp b/clang/lib/Sema/SemaExceptionSpec.cpp
index a18824f..f993a28 100644
--- a/clang/lib/Sema/SemaExceptionSpec.cpp
+++ b/clang/lib/Sema/SemaExceptionSpec.cpp
@@ -1063,8 +1063,10 @@
 
     // Many other things have subexpressions, so we have to test those.
     // Some are simple:
+  case Expr::CoawaitExprClass:
   case Expr::ConditionalOperatorClass:
   case Expr::CompoundLiteralExprClass:
+  case Expr::CoyieldExprClass:
   case Expr::CXXConstCastExprClass:
   case Expr::CXXReinterpretCastExprClass:
   case Expr::CXXStdInitializerListExprClass: