1 files changed, 18 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae10.C b/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae10.C
new file mode 100644
index 0000000..25ef77d
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae10.C
@@ -0,0 +1,18 @@
+// PR c++/48452
+// { dg-do compile { target c++11 } }
+namespace std {
+  template <class T> T&& declval();
+}
+
+template<class T, class... Args>
+decltype(T(std::declval<Args>()...), char()) f(int);
+
+template<class, class...>
+char (&f(...))[2];
+
+struct A { virtual ~A() = 0; };
+struct B {};
+
+static_assert(sizeof(f<A, int, int>(0)) != 1, "Error"); // a
+static_assert(sizeof(f<B, void, int>(0)) != 1, "Error"); // b
+static_assert(sizeof(f<void, int, int>(0)) != 1, "Error"); // c