1 files changed, 27 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae33.C b/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae33.C
new file mode 100644
index 0000000..f543c1f
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae33.C
@@ -0,0 +1,27 @@
+// PR c++/52422
+// { dg-do compile { target c++11 } }
+
+template<class T>
+struct add_rval_ref
+{
+  typedef T&& type;
+};
+
+template<>
+struct add_rval_ref<void>
+{
+  typedef void type;
+};
+
+template<class T>
+typename add_rval_ref<T>::type create();
+
+template<class T, 
+  class = decltype(create<T>()())
+>
+auto f(int) -> char(&)[1];
+
+template<class>
+auto f(...) -> char(&)[2];
+
+static_assert(sizeof(f<void>(0)) != 1, "");