1 files changed, 30 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/template/using24.C b/gcc/testsuite/g++.dg/template/using24.C
new file mode 100644
index 0000000000..c3cdf93ec9
--- /dev/null
+++ b/gcc/testsuite/g++.dg/template/using24.C
@@ -0,0 +1,30 @@
+// PR c++/21682
+
+template <class T>
+struct t
+{
+  typedef typename T::type type;
+};
+template<> class t<int>{};
+
+template <class T> struct t1{ };
+template<> struct t1<int>
+{
+  typedef int type;
+};
+
+namespace name1
+{
+  template <class S> typename t<S>::type begin(S const& s);
+  namespace name2
+  {
+    template <class S> typename t1<S>::type begin(S const& s);
+  }
+  using name2::begin;
+}
+
+/* Test calling the function. */
+int f(int a) { return name1::begin(a); }
+
+struct aa { typedef double type; };
+double g(aa t) { return name1::begin(t); }