diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 7cc841120a1..9b6c8e578cc 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2012-01-01  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/51723
+	* g++.dg/cpp0x/constexpr-delegating2.C: New.
+
 2012-01-01  Jan Hubicka  <jh@suse.cz>
 
 	PR rtl-optimization/51069
diff --git a/gcc/testsuite/g++.dg/cpp0x/constexpr-delegating2.C b/gcc/testsuite/g++.dg/cpp0x/constexpr-delegating2.C
new file mode 100644
index 00000000000..51e2387136a
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/constexpr-delegating2.C
@@ -0,0 +1,25 @@
+// PR c++/51723
+// { dg-options -std=c++0x }
+
+template <int... V>
+struct A
+{
+  static constexpr int a[sizeof...(V)] = { V... };
+};
+
+template <int... V> constexpr int A<V...>::a[];
+
+struct B
+{
+  const int* const b;
+
+  template <unsigned int N>
+  constexpr B(const int(&b)[N])
+  : b(b)
+  { }
+
+  template <int... V>
+  constexpr B(A<V...>)
+  : B(A<V...>::a)
+  { }
+};