Parser: support Microsoft syntax for 'typename typedef'

Summary:
Transform the token sequence for:
typename typedef T U;

to:
typename T typedef U;

Raise a diagnostic when this happens but only if we succeeded handling
the typename.

Reviewers: rsmith, rnk

Reviewed By: rsmith

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1433

llvm-svn: 189867

1 files changed, 9 insertions, 1 deletions

diff --git a/clang/test/Parser/MicrosoftExtensions.cpp b/clang/test/Parser/MicrosoftExtensions.cpp
index 1102fcbcec8..c2d749a288f 100644
--- a/clang/test/Parser/MicrosoftExtensions.cpp
+++ b/clang/test/Parser/MicrosoftExtensions.cpp
@@ -152,7 +152,9 @@ void missing_template_keyword(){
 
 
 
-class AAAA { };
+class AAAA {
+   typedef int D;
+};
 
 template <typename T>
 class SimpleTemplate {};
@@ -174,6 +176,12 @@ void redundant_typename() {
    int k = typename var;// expected-error {{expected a qualified name after 'typename'}}
 }
 
+template <typename T>
+struct TypenameWrongPlace {
+  typename typedef T::D D;// expected-warning {{expected a qualified name after 'typename'}}
+};
+
+extern TypenameWrongPlace<AAAA> PR16925;
 
 __interface MicrosoftInterface;
 __interface MicrosoftInterface {