Add some infrastructure for dealing with expressions of 'placeholder' type,
i.e. expressions with an internally-convenient type which should not be
appearing in generally valid, complete ASTs.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116281 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaCXX/alignof-sizeof-reference.cpp b/test/SemaCXX/alignof-sizeof-reference.cpp
index dd64d6a..945129c 100644
--- a/test/SemaCXX/alignof-sizeof-reference.cpp
+++ b/test/SemaCXX/alignof-sizeof-reference.cpp
@@ -11,5 +11,5 @@
 void f(); 
 void f(int); 
 void g() { 
-  sizeof(&f); // expected-error{{invalid application of 'sizeof' to an overloaded function}}
+  sizeof(&f); // expected-error{{cannot determine the type of an overloaded function}}
 }