1 files changed, 23 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae20.C b/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae20.C
new file mode 100644
index 0000000..882efe7
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae20.C
@@ -0,0 +1,23 @@
+// PR c++/48744
+// { 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 Arg>
+decltype(T{create<Arg>()}, char()) f(int);
+
+template<class, class>
+char (&f(...))[2];
+
+static_assert(sizeof(f<int, void>(0)) != 1, "Error");