re PR c++/84698 (ICE when using noexcept(noexcept()) declaration on global…

re PR c++/84698 (ICE when using noexcept(noexcept()) declaration on global friend function of template class)

	PR c++/84698
	* g++.dg/cpp0x/noexcept42.C: New test.

From-SVN: r272443

gcc/testsuite/ChangeLog

 2019-06-18  Marek Polacek  <polacek@redhat.com>
 
+	PR c++/84698
+	* g++.dg/cpp0x/noexcept42.C: New test.
+
 	PR c++/71548
 	* g++.dg/cpp0x/variadic177.C: New test.
 

gcc/testsuite/g++.dg/cpp0x/noexcept42.C

+// PR c++/84698
+// { dg-do compile { target c++11 } }
+
+template<typename A, typename B>
+struct X {
+  void swap(X& o) noexcept { }
+
+  template<typename... Args>
+  friend void swap(X<Args...>& a, X<Args...>& b) noexcept(noexcept(a.swap(b)));
+};
+
+template<typename... Args>
+inline void swap(X<Args...>& a, X<Args...>& b) noexcept(noexcept(a.swap(b)))
+{
+}
+
+int
+main ()
+{
+  X<int, int> x;
+}