1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp0x/decltype54.C b/gcc/testsuite/g++.dg/cpp0x/decltype54.C
new file mode 100644
index 00000000000..9d301c0a739
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/decltype54.C
@@ -0,0 +1,26 @@
+// PR c++/51908
+// { dg-do compile { target c++11 } }
+
+struct foo1
+{
+  template <typename Ret, typename... Args>
+  operator decltype(static_cast<Ret (*)(Args...)>(nullptr)) () const;
+};
+
+struct foo2
+{
+  template <typename Ret, typename... Args>
+  operator decltype(static_cast<Ret (*)(Args... args)>(nullptr)) () const;
+};
+
+struct foo3
+{
+  template <typename Ret, typename Arg>
+  operator decltype(static_cast<Ret (*)(Arg)>(nullptr)) () const;
+};
+
+struct foo4
+{
+  template <typename Ret, typename Arg>
+  operator decltype(static_cast<Ret (*)(Arg arg)>(nullptr)) () const;
+};