[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/ScopeInfo.cpp b/clang/lib/Sema/ScopeInfo.cpp
index ba8c364..6a400a2 100644
--- a/clang/lib/Sema/ScopeInfo.cpp
+++ b/clang/lib/Sema/ScopeInfo.cpp
@@ -33,11 +33,13 @@
   ObjCWarnForNoDesignatedInitChain = false;
   ObjCIsSecondaryInit = false;
   ObjCWarnForNoInitDelegation = false;
+  FirstReturnLoc = SourceLocation();
   FirstCXXTryLoc = SourceLocation();
   FirstSEHTryLoc = SourceLocation();
 
   SwitchStack.clear();
   Returns.clear();
+  CoroutineStmts.clear();
   ErrorTrap.reset();
   PossiblyUnreachableDiags.clear();
   WeakObjectUses.clear();