Allow variadic arguments without named ones for C++, e.g. "void(...);"

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57143 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Parser/cxx-variadic-func.cpp b/test/Parser/cxx-variadic-func.cpp
new file mode 100644
index 0000000..0ef8684
--- /dev/null
+++ b/test/Parser/cxx-variadic-func.cpp
@@ -0,0 +1,5 @@
+// RUN: clang -fsyntax-only  %s

+

+void f(...) {

+  int g(int(...));

+}