re PR c++/66061 (Internal Compiler Error when specializing a variable template…

re PR c++/66061 (Internal Compiler Error when specializing a variable template when the specialization is variadic)

	PR c++/66061
	* g++.dg/cpp1y/var-templ31.C: New.

From-SVN: r224675

gcc/testsuite/g++.dg/cpp1y/var-templ31.C

+// PR c++/66061
+// { dg-do compile { target c++14 } }
+
+template<int...>
+int x = 1;
+
+template<int n, int... m>
+int x<n, m...> = 1;