re PR c++/65080 (constexpr-ness lost by using alias in definition)

2015-02-16  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/65080
	* g++.dg/cpp0x/constexpr-65080.C: New.

From-SVN: r220739

gcc/testsuite/ChangeLog

+2015-02-16  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/65080
+	* g++.dg/cpp0x/constexpr-65080.C: New.
+
 2015-02-16  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/63593

gcc/testsuite/g++.dg/cpp0x/constexpr-65080.C

+// PR c++/65080
+// { dg-do compile { target c++11 } }
+
+template <typename T>
+static constexpr T xxx(){ return T(); }
+
+template <typename T>
+struct foo {
+  using type = T(*)();
+  static constexpr type value[1] = {&xxx<T>};
+};
+
+template <typename T>
+constexpr typename foo<T>::type foo<T>::value[1];
+
+int main() {
+  constexpr int x = foo<int>::value[0]();
+}