re PR c++/66421 (G++ fails compilation when assigning tuple created with…

re PR c++/66421 (G++ fails compilation when assigning tuple created with variadic template to auto variable)

2015-07-08  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/66421
	* g++.dg/cpp0x/auto45.C: New.

From-SVN: r225563

gcc/testsuite/ChangeLog

+2015-07-08  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/66421
+	* g++.dg/cpp0x/auto45.C: New.
+
 2015-07-08  Vladimir Makarov  <vmakarov@redhat.com>
 
 	PR middle-end/66334

gcc/testsuite/g++.dg/cpp0x/auto45.C

+// PR c++/66421
+// { dg-do compile { target c++11 } }
+
+template<typename... T> struct tuple { };
+
+template<typename... T> tuple<T...> make_tuple(T&&...) { return {}; }
+
+template <typename... Params>
+void foo(Params... params) {
+    auto t = make_tuple((int)params...);
+}
+
+template <typename... Params>
+void bar(Params... params) {
+  tuple<decltype((int)params)...> t = make_tuple((int)params...);
+}
+
+int main() {
+    foo(1,2,3);
+    bar(1,2,3);
+}