Fix parsing of trailing-return-type. Types are syntactically prohibited from
being defined here: [] () -> struct S {} does not define struct S.

In passing, implement DR1318 (syntactic disambiguation of 'final').


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152551 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Parser/cxx0x-decl.cpp b/test/Parser/cxx0x-decl.cpp
index 73aa3fd..b9f5141 100644
--- a/test/Parser/cxx0x-decl.cpp
+++ b/test/Parser/cxx0x-decl.cpp
@@ -6,3 +6,13 @@
   b [[ ]],
   c alignas(double);
 }
+
+struct S {};
+enum E { e };
+
+auto f() -> struct S {
+  return S();
+}
+auto g() -> enum E {
+  return E();
+}