re PR c++/82308 ([C++17] deduction of template arguments results in internal compiler error)

2017-10-19  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/82308
	* g++.dg/cpp1z/class-deduction45.C: New.

From-SVN: r253920

gcc/testsuite/ChangeLog

-2017-10-18  Uros Bizjak  <ubizjak@gmail.com>
+2017-10-19  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/82308
+	* g++.dg/cpp1z/class-deduction45.C: New.
+
+2017-10-19  Uros Bizjak  <ubizjak@gmail.com>
 	    Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/82618

gcc/testsuite/g++.dg/cpp1z/class-deduction45.C

+// PR c++/82308
+// { dg-options -std=c++17 }
+
+template<typename, unsigned>
+struct array {};
+
+template <unsigned R>
+class X {
+public:
+  using T = array<int, R>;
+
+  enum class C : char { A, B };
+  X(T bounds, C c = C::B) : t(bounds) {}
+
+private:
+  T t;
+};
+
+int main()
+{
+  array<int, 2> a;
+  X    d{a};
+  X<2> e{a};
+}