1 files changed, 24 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae9.C b/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae9.C
new file mode 100644
index 0000000..68656c6
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae9.C
@@ -0,0 +1,24 @@
+// PR c++/48450
+// { dg-do compile { target c++11 } }
+
+namespace std {
+  template <class T> T&& declval();
+}
+
+template<class To, class From,
+  class = decltype(static_cast<To>(std::declval<From>()))
+>
+char f(int);
+
+template<class, class>
+char (&f(...))[2];
+
+struct A { virtual ~A() = 0; };
+struct B {};
+struct D : B {};
+
+static_assert(sizeof(f<A, int>(0)) != 1, "Error"); // a
+static_assert(sizeof(f<int*, const void*>(0)) != 1, "Error"); // b
+static_assert(sizeof(f<D*, const B*>(0)) != 1, "Error"); // c
+static_assert(sizeof(f<int B::*, const int D::*>(0)) != 1, "Error"); // d
+static_assert(sizeof(f<B, void>(0)) != 1, "Error"); // e