Add missing diagnostic for a nested-name-specifier on a free-standing type definition. Bump some related diagnostics from warning to extension in C++, since they're errors there. Add some missing checks for function specifiers on non-function declarations.

llvm-svn: 177335

1 files changed, 11 insertions, 0 deletions

diff --git a/clang/test/Parser/cxx-class.cpp b/clang/test/Parser/cxx-class.cpp
index 8ed5882a282..5fac7972857 100644
--- a/clang/test/Parser/cxx-class.cpp
+++ b/clang/test/Parser/cxx-class.cpp
@@ -88,6 +88,17 @@ namespace ctor_error {
     // expected-error{{unknown type name 'UnknownType'}}
 }
 
+namespace nns_decl {
+  struct A {
+    struct B;
+  };
+  namespace N {
+    union C;
+  }
+  struct A::B; // expected-error {{forward declaration of struct cannot have a nested name specifier}}
+  union N::C; // expected-error {{forward declaration of union cannot have a nested name specifier}}
+}
+
 // PR13775: Don't assert here.
 namespace PR13775 {
   class bar