1 files changed, 38 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp0x/collapse.C b/gcc/testsuite/g++.dg/cpp0x/collapse.C
new file mode 100644
index 000000000..96c327324
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/collapse.C
@@ -0,0 +1,38 @@
+// { dg-options "--std=c++0x" }
+template<typename T, typename U> struct same_type;
+template<typename T> struct same_type<T, T> {};
+
+typedef int & lref;
+typedef int const & clref;
+typedef int && rref;
+typedef int const && crref;
+
+template<typename T>
+struct S
+{
+  typedef T & lref;
+  typedef T const & clref;
+  typedef T && rref;
+  typedef T const && crref;
+};
+
+void f()
+{
+  same_type<lref &, int &>();
+  same_type<lref &&, int &>();
+  same_type<rref &, int &>();
+  same_type<rref &&, int &&>();
+
+  same_type<rref const &, int &>();
+  same_type<crref volatile &&, int const &&>();
+  same_type<clref const &&, int const &>();
+
+  same_type<S<int &>::lref &, int &>();
+  same_type<S<int &&>::lref &&, int &>();
+  same_type<S<int &>::rref &, int &>();
+  same_type<S<int &&>::rref &&, int &&>();
+
+  same_type<S<int const &>::rref, int const &>();
+  same_type<S<int volatile &&>::crref, int volatile &&>();
+  same_type<S<int const &&>::clref, int const &>();
+}