Initial implementation of parsing, semantic analysis, and template
instantiation for C++ typename-specifiers such as

  typename T::type

The parsing of typename-specifiers is relatively easy thanks to
annotation tokens. When we see the "typename", we parse the
typename-specifier and produce a typename annotation token. There are
only a few places where we need to handle this. We currently parse the
typename-specifier form that terminates in an identifier, but not the
simple-template-id form, e.g.,

  typename T::template apply<U, V>

Parsing of nested-name-specifiers has a similar problem, since at this
point we don't have any representation of a class template
specialization whose template-name is unknown.

Semantic analysis is only partially complete, with some support for
template instantiation that works for simple examples. 



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67875 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/ParseExpr.cpp b/lib/Parse/ParseExpr.cpp
index 913f9ba..f10cb38 100644
--- a/lib/Parse/ParseExpr.cpp
+++ b/lib/Parse/ParseExpr.cpp
@@ -712,6 +712,7 @@
   case tok::kw_float:
   case tok::kw_double:
   case tok::kw_void:
+  case tok::kw_typename:
   case tok::kw_typeof:
   case tok::annot_typename: {
     if (!getLang().CPlusPlus) {