Fix failing C++17 test

	* testsuite/24_iterators/range_access_cpp17.cc: Fix order of dg-do
	and dg-options directives. Fix invalid test.

From-SVN: r253019

libstdc++-v3/ChangeLog

 2017-09-20  Jonathan Wakely  <jwakely@redhat.com>
 
+	* testsuite/24_iterators/range_access_cpp17.cc: Fix order of dg-do
+	and dg-options directives. Fix invalid test.
+
 	PR libstdc++/81469
 	* libsupc++/exception (uncaught_exception): Deprecate for C++17.
 	* testsuite/18_support/exception_ptr/62258.cc: Add -Wno-deprecated.

libstdc++-v3/testsuite/24_iterators/range_access_cpp17.cc

-// { dg-do compile { target c++17 } }
 // { dg-options "-std=gnu++17" }
+// { dg-do compile { target c++17 } }
 
 // Copyright (C) 2017 Free Software Foundation, Inc.
 //
@@ -47,7 +47,7 @@ void
 test03()
 {
   using std::reverse_iterator;
-  static std::initializer_list<int> il{1};
+  static constexpr std::initializer_list<int> il{1};
   static_assert(std::cbegin(il) == il.begin());
   static_assert(std::cend(il) == il.end());
   static_assert(std::rbegin(il) == reverse_iterator<const int*>(il.end()));