re PR c++/52440 ([C++11] Wrong template argument deduction/substitution failures)

2013-06-10  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/52440
	* g++.dg/cpp0x/pr52440.C: New.

From-SVN: r199899

gcc/testsuite/ChangeLog

+2013-06-10  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/52440
+	* g++.dg/cpp0x/pr52440.C: New.
+
 2013-06-10  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/56564

gcc/testsuite/g++.dg/cpp0x/pr52440.C

+// PR c++/52440
+// { dg-do compile { target c++11 } }
+
+template<bool>
+struct V
+{
+  typedef void type;
+};
+
+template<typename T>
+struct X
+{
+  template<typename>
+  static constexpr bool always_true()
+  {
+    return true;
+  }
+
+  template<typename U,
+           typename = typename V<always_true<U>()>::type>
+  X(U &&) {}
+};
+
+int main()
+{
+  X<int> x(42);
+}